CN209629231U - Waist vehicle with retractable support wheel bar - Google Patents

Abstract

A kind of waist vehicle with retractable support wheel bar, it includes vehicle stool main body and the waistband for the vehicle stool main body to be strapped in user's waist and abdomen, the vehicle stool main body includes the stool surface for support baby, recline the inner concave arc surface and the outer arc arch face opposite with inner concave arc surface corresponding direction of user's waist abdomen, a telescopic supporting rod is connected on the outer arc arch face, the other end corresponding with outer arc arch face stretches to ground on the telescopic supporting rod, angle between the telescopic supporting rod and the outer arc arch face is relatively fixed, and a universal wheel is also equipped on the other end corresponding with outer arc arch face on the telescopic supporting rod.

Description

Waist vehicle with retractable support wheel bar

Technical field

The utility model relates to articles for babies technical fields, particularly relate to a kind of waist vehicle with retractable support wheel bar.

Background technique

Lumbar stool is a kind of for assisting the equipment that uses of bosom baby comprising a lumbar stool main body and is connected to lumbar stool The waistband of main body two sides, lumbar stool main body are used for the buttocks of support baby, and waistband is used to the lumbar stool main body being strapped in user Waist and abdomen reach so that the body of baby can be held from below when holding in the arms baby using this and reduce user The burden of both hands and waist hip, both hands only need slightly to help the body for embracing baby, prevent it from sliding from lumbar stool.Lumbar stool Because structure is simple, easy to use, used selected by users.

On the basis of above-mentioned most traditional lumbar stool, people design what number of patent application 201720574043.X was announced A kind of baby's lumbar stool protects the structures such as pocket, hip pad portion and shoulder belt to the base in lumbar stool bracketing baby buttocks by increasing baby Catch the body of baby on plinth, and then both hands can be liberated completely in use, by the body wt of baby by shoulder with And waist undertakes, to improve usage comfort.

But lumbar stool as described above still remains a series of defect in use, for example, because lumbar stool is general Mainly embracing baby's outdoor activities or going out uses for a long time, therefore after armful baby for a long time, though infant weight by Shoulder, which is shared, also still extremely to consume one's strength, and lumbar stool does not have additional support structures, can not impute to the weight of baby additionally Support construction.How this technological deficiency is solved, the Main way as of the invention to be studied.

Utility model content

The utility model provides a kind of waist vehicle with retractable support wheel bar, and technical problem underlying to be solved exists It mainly include that lumbar stool main body and waistband form in: existing lumbar stool, when use mainly utilizes lumbar stool theme support baby, more into one The scheme of step is then to increase shield pocket and shoulder belt etc. accessory structure on the basis of common lumbar stool, and realization can catch baby's body Body liberates user's both hands, and the body wt of baby is carried out support by the shoulder and waist and abdomen of user, still Above lumbar stool does not have additional support construction, and all weight requires the body of user to undertake.

In order to solve the above technical problems, the utility model provides a kind of waist vehicle with retractable support wheel bar comprising vehicle Stool main body and waistband for the vehicle stool main body to be strapped in user's waist and abdomen, the vehicle stool main body includes for holding Hold in the palm the stool surface of baby, the inner concave arc surface and the outer arc arch face opposite with inner concave arc surface corresponding direction of the user's waist abdomen that reclines, institute It states and is connected with a telescopic supporting rod on outer arc arch face, the other end corresponding with outer arc arch face stretches to ground on the telescopic supporting rod Face, the angle between the telescopic supporting rod and the outer arc arch face is relatively fixed, and on the telescopic supporting rod with outer arch A universal wheel is also equipped on the corresponding other end in face.

Be preferable over: the telescopic supporting rod includes upper pole, middle pole and the lower pole in bobbin shape, the upper pole Upper end be connected on the outer arc arch face, the upper end of the middle pole coaxially matches and what can be axially slid relative is plugged on institute It states in the lower end of pole, the upper end of the lower pole coaxially matches and what can be axially slid relative is plugged on the middle pole In lower end, the lower end of the lower pole is equipped with the universal wheel.

It is preferable over: offering a keyhole on the side tube wall of the upper end of the lower pole, being provided with one in the keyhole can Card bead in the tube wall of lower pole described in radial elastic protrusion or retraction, on the middle pole with the card bead pair on the lower pole Axially equally distributed on the side tube wall answered to offer several card holes, the lower pole slid axially in the middle pole Cheng Zhong, the card bead on the lower pole can successively radial convex be stuck in several card holes on the middle pole.

It is preferable over: also offering a keyhole on the side tube wall of the upper end of the middle pole, be arranged in the keyhole Have one can the card bead in the tube wall of middle pole described in radial elastic protrusion or retraction, on the upper pole with the middle pole On the corresponding side tube wall of card bead on it is axial it is equally distributed offer several card holes, the middle pole is in the upper section In bar in axial sliding process, the card bead on the middle pole successively can be stuck in several card holes on the upper pole by radial convex In.

Be preferable over: the upper end of the middle pole is fixedly installed a bulb identical with the outer diameter of the middle pole, described There is card neck, the lower end fixing sleeve of the upper pole is equipped with a connecting tube, the company between bulb and the upper end of the middle pole The internal diameter of adapter tube is identical as the internal diameter of the upper pole, and what diameter concaved on the inner tubal wall of the connecting tube is provided with a spheric seat Chamber is gradually increased in the connecting tube by the overall diameter of corresponding with the upper pole one end to the other end, the connecting tube Offered on tube wall it is at least three axially extending perforative through notch to the corresponding one end of the middle pole, described at least three Through notch the spheric seat chamber will be corresponded in the connecting tube where one section of tube wall it is corresponding be cut into it is uniform at least Three valves are provided with external screw thread on the outer tube wall of the connecting tube, and a locking casing, the locking set are arranged in the connecting tube The internal diameter of pipe matches with the minimum outer diameter in the connecting tube, is provided with and the connection on the inner tubal wall of the locking casing The internal screw thread that external screw thread on pipe is meshed.

Be preferable over: the vehicle stool main body includes the outer enclosure and stool core, and the corresponding side of inner concave arc surface of the stool core is set Be equipped with a support backup plate, be provided with compressed spring between support backup plate and the inner concave arc surface of the stool core, the stool core with And support backup plate is encapsulated in the outer enclosure.

Be preferable over: the upper end of the upper pole is fixedly installed a hinged pipe, and the hinged pipe is vertical with the upper pole, The mounting plate that a shape fits with the outer arc arch face is fixedly installed in the vehicle stool main body, the side of the mounting plate is solid Surely it is mounted on the outer arc arch face, the hinged seat board that there are two the other side fixed settings of the mounting plate is parallel to each other, two An articulated shaft is fixedly installed between a hinged seat board, the hinged pipe is coaxial to be socketed on the articulated shaft, described Both ends on articulated shaft corresponding to the hinged pipe are socketed with a torsional spring, and the both ends of each torsional spring are respectively fixedly connected with described With on corresponding hinged seat board, the torsional direction of two torsional springs is opposite for hinged pipe.

It is preferable over: being fixedly installed with the mounting plate that a shape fits with the outer arc arch face, institute in the vehicle stool main body The side fixation for stating mounting plate is mounted on the outer arc arch face, and it is T-shaped that a cross section is fixedly installed on the mounting plate Slot, and the slot is closed at one end, the two sides of the slot offer the bayonet through side channel wall, the upper pole it is upper End is fixedly installed a plugboard, and the plugboard is connected to the at T-shaped plug construction of the upper pole upper end shape, the plugboard Match with the size of the slot, the corresponding two bayonet positions in the two sides of the plugboard are provided with two elasticity Buckle, the plugboard are plugged in the slot, and two Elastic buckles, which respectively correspond, to be buckled in two bayonets.

Be preferable over: the upper pole, middle pole and lower pole are aluminum alloy material.

Compared with prior art, the utility model has the beneficial effects that described flexible provided with one in vehicle stool main body Support rod can provide additional support construction to lumbar stool, during activity is even gone on a journey outdoors, can use described flexible Support rod is supported lumbar stool, and the lumbar stool and retractable support rod structure can also be made to form one by the universal wheel Easy cart structure reaches walking, is capable of providing additional support in standing process, and then saves physical strength.

Detailed description of the invention

Fig. 1 is the utility model based on five schematic perspective view of embodiment on the basis of embodiment two.

Fig. 2 is the partial enlargement structural representation of A in Fig. 1.

Fig. 3 is schematic cross-sectional view of the utility model based on the embodiment five on the basis of embodiment two.

Fig. 4 is the partial enlargement structural representation of B in Fig. 3.

Fig. 5 is the utility model based on five structural schematic diagram of embodiment on the basis of embodiment two.

Fig. 6 is the utility model based on six structural schematic diagram of embodiment on the basis of embodiment three.

Fig. 7 is the sectional perspective decomposition texture enlarged diagram of C in Fig. 6.

Fig. 8 is schematic cross-sectional view of the utility model based on the embodiment six on the basis of embodiment three.

Fig. 9 is the partial enlargement structural representation of D in Fig. 8.

Specific embodiment

Below with reference to attached drawing 1-9 and preferred embodiment to the utility model proposes one kind there is retractable support wheel bar Waist vehicle be described in greater detail, in the description of the present invention, unless otherwise specified and limited, it should be noted that art Language " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, are also possible to two members Connection inside part, can be directly connected, can also indirectly connected through an intermediary, for the ordinary skill people of this field For member, the concrete meaning of above-mentioned term can be understood as the case may be.

The utility model provides a kind of waist vehicle with retractable support wheel bar, and specific embodiment is as follows.

A kind of embodiment one: as shown in figs 1-9 comprising waist vehicle with retractable support wheel bar comprising vehicle stool main body 1 And the waistband 2 for the vehicle stool main body 1 to be strapped in user's waist and abdomen, the vehicle stool main body 1 include being used for support The inner concave arc surface 12 and the outer arc arch face opposite with 12 corresponding direction of inner concave arc surface of the stool surface 11 of baby, the user's waist abdomen that reclines 13, it is connected with a telescopic supporting rod 3 on the outer arc arch face 13, it is corresponding with outer arc arch face 13 another on the telescopic supporting rod 3 Ground is stretched in one end, and the angle between the telescopic supporting rod 3 and the outer arc arch face 13 is relatively fixed, and the retractable support A universal wheel 4 is also equipped on bar 3 on the other end corresponding with outer arc arch face 13.

In the specific implementation process, the telescopic supporting rod 3 can provide additional the present embodiment for the vehicle stool main body 1 Support construction, so as to which the weight bearing of the baby of support in the vehicle stool main body 1 is married again on the telescopic supporting rod 3, and And the lower end of the telescopic supporting rod 3 is additionally provided with universal wheel 4, therefore the vehicle stool main body 1, telescopic supporting rod 3 and universal Wheel 4 constitutes the stroller of an easy structure, and then during embracing baby's trip, can greatly save the body of user Power.

Further, as shown in Fig. 1,3,5,6,8, the telescopic supporting rod 3 includes upper pole 31, the middle pole in bobbin shape 32 and lower pole 33, the upper end of the upper pole 31 be connected on the outer arc arch face 13, the upper end of the middle pole 32 is same Axis matches and what can be axially slid relative is plugged in the lower end of the upper pole 31, and the upper end of the lower pole 33 coaxially matches And what can be axially slid relative is plugged in the lower end of the middle pole 32, the lower end of the lower pole 33 is equipped with described universal Wheel 4, the universal wheel 4 are the universal wheel with wheel brake structure.

Embodiment two: as shown in Fig. 1,3,4,5, on the basis of the above embodiment 1, the upper end of the lower pole 33 A keyhole is offered on the tube wall of side, be provided in the keyhole one can lower pole 33 described in radial elastic protrusion or retraction pipe In card bead 34(Figure of description 3,4 in wall, above-mentioned card key position is blocked by the card bead 34, therefore is not marked individually Note), it is axial on side tube wall corresponding with the card bead 34 on the lower pole 33 on the middle pole 32 equally distributed to open up There are several card holes 35, the lower pole 33 is in the middle pole 32 in axial sliding process, the card bead on the lower pole 33 34 can successively radial convex be stuck in several card holes 35 on the middle pole 32, stretch out institute to realize and adjust the lower pole 33 The length for stating middle pole 32 reaches and meets people of different heights's use；It is also opened on the side tube wall of the upper end of the middle pole 32 Equipped with a keyhole (reason is as above), one is provided in the keyhole can middle pole 32 described in radial elastic protrusion or retraction The card bead 34(structure in tube wall is identical as above structure, therefore is labeled using same numbers), the upper pole 31 It is axially equally distributed on upper side tube wall corresponding with the card bead 34 on the middle pole 32 to offer several card holes 35, For the middle pole 32 in the upper pole 31 in axial sliding process, card bead 34 on the middle pole 32 can successively radial convex It is stuck in several card holes 35 on the upper pole 31, acts on also for the length for adjusting the telescopic supporting rod 3.

Embodiment three: as shown in Fig. 6,8,9, on the basis of above-described embodiment one, the upper end of the lower pole 33 A keyhole is offered on the tube wall of side, be provided in the keyhole one can lower pole 33 described in radial elastic protrusion or retraction pipe In card bead 34(Figure of description 3,4 in wall, above-mentioned card key position is blocked by the card bead 34, therefore is not marked individually Note), it is axial on side tube wall corresponding with the card bead 34 on the lower pole 33 on the middle pole 32 equally distributed to open up There are several card holes 35, the lower pole 33 is in the middle pole 32 in axial sliding process, the card bead on the lower pole 33 34 can successively radial convex be stuck in several card holes 35 on the middle pole 32, stretch out institute to realize and adjust the lower pole 33 The length for stating middle pole 32 reaches and meets people of different heights's use；Unlike above-described embodiment two, the middle pole 32 Upper end be fixedly installed a bulb 36 identical with the outer diameter of the middle pole 32, the bulb 36 and the middle pole 32 There is card neck between upper end, the lower end fixing sleeve of the upper pole 32 is equipped with a connecting tube 37, the internal diameter of the connecting tube 37 with The internal diameter of the upper pole 31 is identical, and what diameter concaved on the inner tubal wall of the connecting tube 37 is provided with a spheric seat chamber 38, institute It states and is gradually increased in connecting tube 37 by the overall diameter of corresponding with the upper pole 31 one end to the other end, the connecting tube 37 It is axially extending perforative (in figure described through notch to the corresponding one end of the middle pole 31 that at least three are offered on tube wall Bulb 36 blocks, therefore does not mark), described at least three will correspond to the spheric seat chamber 38 through notch in the connecting tube 37 One section of the tube wall at place corresponds to uniform at least three valves being cut into, and is provided with outer spiral shell on the outer tube wall of the connecting tube 37 Line, is arranged with a locking casing 39 in the connecting tube 37, on the internal diameter of the locking casing 39 and the connecting tube 37 most Small outer diameter matches, and is provided in being meshed with the external screw thread in the connecting tube 37 on the inner tubal wall of the locking casing 39 Screw thread, the bulb 36, connecting tube 37 and locking casing 39 are engineering plastics material, therefore when the bulb 36 slides to institute When stating in spheric seat chamber 38, the locking casing 39 can be made to middle 32 place of pole to lock casing 39 described in turn One end sliding, and then at least three valve tube walls in the connecting tube 37 are radially-inwardly collected, reduce the spheric seat chamber 38 Diameter holding card is realized using the spherical joint structure between the bulb 36 and the spheric seat chamber 38 and is adjusted on the bulb 36 Angle between the whole middle pole 32 and upper pole 31 avoids the middle pole 32 and 33 straight line of lower pole from stretching out too long shadow The passerby in front is rung, and the middle pole 32 can also pass through in upper pole 31 described in 37 retraction of connecting tube, the company Adapter tube 37, which can also be embraced, to be clipped on the tube wall of the middle pole 32.

Example IV: as shown in Fig. 1,3,5, on the basis of above-described embodiment two or three, the vehicle stool main body 1 includes outer The enclosure (the outer enclosure belongs to flexible sheet material and sews, and therefore, it is difficult to be drawn by mechanical drawing, but it is conventional structure, because This is not shown in the figure) and stool core (the vehicle stool main body of institute's distance pole can regard as stool core in figure), the inner concave arc surface of the stool core 12 side is provided with a support backup plate 14, is provided with compression between support backup plate 14 and the inner concave arc surface 12 of the stool core Spring 15, the stool core and support backup plate 14 are encapsulated in the outer enclosure, and then can make the stool core and user Waist covers the elastic buffer structure being made of with one the support backup plate 14 and compressed spring 15 between portion, can mention for user For resilient support, long-time bondage is avoided tightly to cause very much waist and belly discomfort.

Embodiment five: as shown in Fig. 1,2,3,5, on the basis of above-described embodiment four, the upper end of the upper pole 31 is solid Surely it is provided with a hinged pipe 311, the hinged pipe 311 is vertical with the upper pole 31, is fixedly installed in the vehicle stool main body 1 The side fixation of the mounting plate 5 that one shape and the outer arc arch face 13 fit, the mounting plate 5 is mounted on the outer arc arch face On 13, in the actual operation process, the mounting plate 5 can by rivet rivet clasp the outer cover set on, the mounting plate 5 it is another It is hinged that side fixed setting there are two the hinged seat board 51 that is parallel to each other, between two hinged seat boards 51 is fixedly installed one Axis 52, the hinged pipe 311 is coaxial to be socketed on the articulated shaft 52, and the hinged pipe is corresponded on the articulated shaft 52 311 both ends are socketed with a torsional spring 53, the both ends of each torsional spring 53 be respectively fixedly connected with the hinged pipe 311 with it is corresponding On hinged seat board 51, the torsional directions of two torsional springs 53 is on the contrary, therefore can be by the hinged pipe 311 by the upper section 31 upper end of bar is hinged on the mounting plate 5, and the torsional spring that two torsional directions at 311 both ends of the hinged pipe are opposite 53, and then can be using the opposite torsional spring 53 of two torsion by the relative angle between the upper pole 31 and the mounting plate 5 The location structure that is fixed, and can be constituted using two torsional springs 53 enables the upper pole 31 certain The torsional spring 53 is overcome to rotate under the action of external force relative to the articulated shaft 52, to form a kind of buffer structure, user makes With in lumbar stool provided in this embodiment outdoors walking process, vehicle stool main body 1 can be carried out using the telescopic supporting rod 3 Support is formed easy cart by the universal wheel 4, while being contacted the fluctuating on ground to universal wheel 4 using the knob spring 53 It is buffered.

Embodiment six: it as shown in Fig. 6,7,8, on the basis of above-described embodiment four, is fixedly mounted in the vehicle stool main body 1 The side fixation of the mounting plate 5 for having a shape and the outer arc arch face to fit, the mounting plate 5 is mounted on the outer arc arch face On 13, in the actual operation process, the mounting plate 5 can be by rivet rivet clasp on outer cover set, with above-described embodiment five Unlike, the T-shaped slot 6 in a cross section is fixedly installed on the mounting plate 5, and the slot 6 is closed at one end, institute The two sides for stating slot 6 offer bayonet 61 through side channel wall, and the upper end of the upper pole 31 is fixedly installed a plugboard 7, The plugboard 7 is connected to the 31 at T-shaped plug construction of upper end shape of upper pole, the size of the plugboard 7 and the slot 6 Match, corresponding two 61 positions of bayonet in the two sides of the plugboard 7 are respectively provided with that there are two Elastic buckles 71, described to insert Fishplate bar 7 is plugged in the slot 6, and two Elastic buckles 71, which respectively correspond, to be buckled in two bayonets 61, therefore can be with In the case where riding public transportation means or activity etc. indoors does not need telescopic supporting rod 3, by by the grafting Plate 7 is on the contrary then carry out group from splitting out the fractionation that can be realized between the vehicle stool main body 1 and telescopic supporting rod 3 in the slot 6 Dress, so that usage mode is more flexible convenient.

Or unlike embodiment five, six, the upper end of the upper pole 31 is through the fixed grafting of the outer enclosure In the stool core inner, to make the bonding strength between the telescopic supporting rod 3 and the vehicle stool main body 1, stability more preferably.

Further, in embodiment as described above, the upper pole 31, middle pole 32 and lower pole 33 are aluminium alloy Material, thus it is light-weight, intensity is also relatively reliable, can satisfy support baby's body effect.

In summary, the technical solution of the utility model sufficiently effective can complete above-mentioned purpose of utility model, and The structural principle and the principle of work and power of the utility model have all adequately been verified in embodiment, and can reach expected function Effect and purpose, and the embodiments of the present invention can also be converted according to these principles, therefore, the utility model includes one Cut all replacement contents being previously mentioned in range in claim.Any institute in present utility model application the scope of the patents The equivalence changes of work, all within the scope of the patents of category this case application.

Claims (9)

1. a kind of waist vehicle with retractable support wheel bar comprising vehicle stool main body and make for the vehicle stool main body to be strapped in The waistband of user's waist and abdomen, the vehicle stool main body include stool surface, the imploded arcs for the user's waist abdomen that reclines for support baby Face and the outer arc arch face opposite with inner concave arc surface corresponding direction, it is characterised in that: it is flexible that one is connected on the outer arc arch face Support rod, the other end corresponding with outer arc arch face stretches to ground on the telescopic supporting rod, the telescopic supporting rod and described outer Angle between arch face is relatively fixed, and is also equipped on the other end corresponding with outer arc arch face on the telescopic supporting rod One universal wheel.

2. as described in claim 1 with the waist vehicle of retractable support wheel bar, it is characterised in that: the telescopic supporting rod includes being in Upper pole, middle pole and the lower pole of bobbin shape, the upper end of the upper pole are connected on the outer arc arch face, the middle section The upper end of bar coaxially matches and what can be axially slid relative is plugged in the lower end of the upper pole, and the upper end of the lower pole is same Axis matches and what can be axially slid relative is plugged in the lower end of the middle pole, and the lower end of the lower pole is equipped with described ten thousand To wheel.

3. as claimed in claim 2 with the waist vehicle of retractable support wheel bar, it is characterised in that: the one of the upper end of the lower pole A keyhole is offered on side pipe wall, one is provided in the keyhole can be in the tube wall of lower pole described in radial elastic protrusion or retraction Card bead, if axial on side tube wall corresponding with the card bead on the lower pole on the middle pole equally distributed offer Dry card hole, for the lower pole in the middle pole in axial sliding process, card bead on the lower pole can successively radial convex It is stuck in several card holes on the middle pole.

4. as claimed in claim 3 with the waist vehicle of retractable support wheel bar, it is characterised in that: the one of the upper end of the middle pole Also a keyhole is offered on side pipe wall, one is provided in the keyhole can middle pole described in radial elastic protrusion or retraction The card bead in tube wall is axially uniformly distributed on the upper pole on side tube wall corresponding with the card bead on the middle pole Offer several card holes, the middle pole is in the upper pole in axial sliding process, the card on the middle pole Pearl can successively radial convex be stuck in several card holes on the upper pole.

5. as claimed in claim 3 with the waist vehicle of retractable support wheel bar, it is characterised in that: the upper end of the middle pole is fixed It is provided with a bulb identical with the outer diameter of the middle pole, there is card neck between the bulb and the upper end of the middle pole, The lower end fixing sleeve of the upper pole is equipped with a connecting tube, and the internal diameter of the connecting tube is identical as the internal diameter of the upper pole, institute The spheric seat chamber that is provided with that diameter on the inner tubal wall of connecting tube concaves is stated, by corresponding with the upper pole in the connecting tube The overall diameter of one end to the other end is gradually increased, and it is corresponding to the middle pole that at least three are offered on the tube wall of the connecting tube One end it is axially extending it is perforative run through notch, described at least three will correspond to the spheric seat through notch in the connecting tube One section of tube wall where chamber corresponds to uniform at least three valves being cut into, and is provided with outer spiral shell on the outer tube wall of the connecting tube Line is arranged with a locking casing, the internal diameter of the locking casing and the minimum outer diameter phase in the connecting tube in the connecting tube It matches, is provided with the internal screw thread being meshed with the external screw thread in the connecting tube on the inner tubal wall of the locking casing.

6. as described in claim 4 or 5 with the waist vehicle of retractable support wheel bar, it is characterised in that: the vehicle stool main body includes The outer enclosure and stool core, the corresponding side of inner concave arc surface of the stool core are provided with a support backup plate, the support backup plate and institute It states and is provided with compressed spring between the inner concave arc surface of stool core, the stool core and support backup plate are encapsulated in the outer enclosure.

7. as claimed in claim 6 with the waist vehicle of retractable support wheel bar, it is characterised in that: the upper end of the upper pole is fixed It is provided with a hinged pipe, the hinged pipe is vertical with the upper pole, is fixedly installed with a shape and institute in the vehicle stool main body The mounting plate that outer arc arch face fits is stated, the side fixation of the mounting plate is mounted on the outer arc arch face, the mounting plate Other side fixed setting there are two the hinged seat board that is parallel to each other, between two hinged seat boards to be fixedly installed one hinged Axis, the hinged pipe is coaxial to be socketed on the articulated shaft, and the both ends on the articulated shaft corresponding to the hinged pipe cover Be connected to a torsional spring, the both ends of each torsional spring be respectively fixedly connected with the hinged pipe on corresponding hinged seat board, described in two The torsional direction of torsional spring is opposite.

8. as claimed in claim 6 with the waist vehicle of retractable support wheel bar, it is characterised in that: fixed peace in the vehicle stool main body Equipped with the mounting plate that a shape and the outer arc arch face fit, the side fixation of the mounting plate is mounted on the outer arc arch face On, the T-shaped slot in a cross section is fixedly installed on the mounting plate, and the slot is closed at one end, the slot Two sides offer the bayonet through side channel wall, and the upper end of the upper pole is fixedly installed a plugboard, the plugboard connection In the at T-shaped plug construction of the upper pole upper end shape, the size of the plugboard and the slot matches, the plugboard The corresponding two bayonet positions in two sides are provided with two Elastic buckles, and the plugboard is plugged in the slot, and two A Elastic buckle, which respectively corresponds, to be buckled in two bayonets.

9. as claimed in claim 7 or 8 with the waist vehicle of retractable support wheel bar, it is characterised in that: the upper pole, middle pole And lower pole is aluminum alloy material.