JP2002200901A - Stroller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stroller capable of playing roles of a plurality of strollers of different types by one type. SOLUTION: In this stroller having a riding part 110 on which an infant rides, a frame part 120 for supporting the riding part 110 and a wheel part 140 installed in the frame part 120, a plurality of first wheels 141 are arranged in the wheel part 140 and second wheels 142 having different diameters are attachably/detachably mounted on each of the plurality of first wheels 141.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a baby stroller which can be moved by pushing a baby or the like and pushing a guardian or the like.

[0002]

2. Description of the Related Art Strollers which are moved by pushing a baby or the like and being pushed by a guardian or the like can be roughly divided into two types, one for a low-month age and one for a high-monthly example. The low age type is a stroller mainly for infants who cannot yet sit alone. In other words, the stroller for a young child has a configuration in which an infant can be boarded while sleeping. On the other hand, the high-age baby stroller is intended for infants who can already sit alone. In other words, the stroller for a high age is configured to be able to ride with a baby sitting. However, baby strollers in recent years, for both low and high age babies,
It is possible to sit down, the only difference between the two is the size of the diameter of the wheel.

[0003] Specifically, the diameter of the wheel of a baby stroller for a high age is about 120 mm, and the diameter of the wheel of a baby stroller for a low age is about 180 mm. Since the stroller for a low age has a large wheel diameter of φ180 mm, the stroller runs stably. In other words, it is easy to get over the unevenness on the road surface and has good vibration absorption, so that it is easy for infants to lie down and move. However, the stroller for a younger age has a drawback that the wheel is large and the weight is heavy and it is difficult to handle. On the other hand, a baby stroller for a high age compensates for the disadvantages of a baby stroller for a low age. That is, since the stroller for a high age has a small wheel diameter of φ120 mm, it is light in weight and easy to handle. However, baby strollers for high ages, on the other hand, have the disadvantages of poor running stability and poor vibration absorption due to their light weight.

[0004] In consideration of the advantages and disadvantages of such a stroller for a low age or a high age, a guardian usually uses a stroller for a low age as long as the baby still cannot sit alone. In other words, baby strollers for low ages are difficult to handle, but have good vibration absorption from the road surface,
In addition, since the running stability is good, it is suitable for moving an infant while lying down. However, after that, when the infant can sit alone and the infant can be seated, the guardian uses the stroller for the older age because the baby no longer needs to be laid down and moved. In other words, although the high-age type has poor vibration absorption from the road surface, etc., if the baby can be seated without being laid in the stroller, the guardian selects the ease of handling rather than the vibration absorption, and Will use.

[0005]

As described above, a parent such as an infant or the like must first purchase a baby stroller for a younger age and then purchase a baby stroller for a higher age according to the growth process of the infant. There is a problem that the financial burden on the elderly increases. In addition, there is a problem that a parent having two or more babies needs to use a baby stroller for a low age or a high age for a baby depending on the baby to ride, which is complicated.

[0006] In view of the above points, an object of the present invention is to provide a stroller that can serve as a plurality of strollers of different types.

[0007]

According to the first aspect of the present invention, there is provided a riding section on which an infant rides, a frame section supporting the riding section, and a wheel section installed on the frame section. And a plurality of first wheels are disposed on the wheel portion, and the plurality of first wheels are provided.
The stroller is characterized in that second wheels having different diameters are detachably attached to each of the wheels. According to the configuration of claim 1,
A plurality of first wheels are arranged on the wheel portion, and a second wheel having a different diameter is detachably attached to each of the plurality of first wheels. Therefore, the diameter of the wheel can be easily changed by removing the second wheel from the first wheel.

Preferably, according to the invention of claim 2, in the configuration of claim 1, the diameter of the first wheel is φ11.
A stroller having a diameter of 5 mm or more and less than 180 mm, and wherein the diameter of the second wheel is 180 mm or more.

According to the second aspect of the present invention, the wheel of the second stroller having a diameter of 180 mm or more is attached to the wheel of the first stroller having a diameter of 115 mm or more and less than 180 mm. Thus, the second stroller can be easily obtained. Also, by removing the wheels of the second stroller from the wheels of the first stroller, the first stroller can be easily obtained.

Preferably, according to a third aspect of the present invention, in the configuration of the second or third aspect, the second wheel is mounted on the first wheel by a fixing tool. Claim 2 or Claim 3
The stroller described in. According to the configuration of claim 3, the user operates the fixing device, so that the wheels of the second stroller can be easily attached to and detached from the wheels of the first stroller.

Preferably, according to a fourth aspect of the present invention, there is provided the stroller according to the third aspect, wherein the fixing tool is fixed by a screwing or engaging mechanism. According to the configuration of claim 4, since the fixing tool is configured to be fixed by a screwing or engagement mechanism, a user can more easily operate the fixing tool. Therefore, the wheels of the second stroller can be more easily attached to and detached from the wheels of the first stroller.

Preferably, according to a fifth aspect of the present invention, in the configuration of any of the second to fourth aspects, the first wheel has a plurality of wheels, and each of the plurality of wheels has the first wheel. A stroller characterized in that it is configured to attach a second wheel. According to the configuration of claim 5, the first wheel has a plurality of wheels, and the second wheel is attached to each of the plurality of wheels. Therefore, the user can more easily attach and detach the wheels of the second stroller to and from the plurality of wheels of the first stroller.

[0013]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. still,
Although the embodiments described below are preferred specific examples of the present invention, various technically preferable limitations are added thereto. However, the scope of the present invention is particularly limited in the following description. Are not limited to these embodiments unless otherwise described.

(First Embodiment) FIG. 1 is a schematic perspective view showing a stroller to which the present invention is applied. In FIG. 1, a stroller 100 is provided with a seat 110 which is a riding section on which infants to be placed are arranged. The seat 110 has a seating surface 111 and a backrest 112, and the baby can be put to sleep by tilting the backrest 112. When a baby is to be seated, the backrest 112 is made to stand by the user. And such a sheet 1
The frame 120 is arranged as shown in FIG. A handle 130 is disposed at the top of the frame 120 in the drawing, and the handle 13
For example, 0 can be pressed by a guardian.

In the lower portion of the frame 120, for example, four wheel portions 140 are formed. That is, two wheel portions 140 are formed on the front wheel side and two portions on the rear wheel side. The front wheel part 140 is 2
It is a twin wheel formed by the two wheels 141, 141. The rear wheel portion 140 is formed by one wheel 141. In the present embodiment, the wheel portion 140 on the rear wheel side is formed by a single wheel 141, but the rear wheel side may be a double wheel like the front wheel side. The diameter of the wheel 141 of the stroller 100 shown in FIG. 1 is a first wheel, that is, a wheel for so-called high age, and the diameter of the wheel is, for example, about φ117 mm. Therefore, the stroller 100 shown in FIG.
It is in a state where it can be used as a stroller for aged people having wheels of No.

By the way, the stroller 10 according to the present embodiment is
In the case of 0, the so-called low moon age wheel, which is the second wheel, is mounted on the high moon age wheel 141 shown in FIG. Hereinafter, the specific configuration will be described. FIG. 2 is a schematic cross-sectional view showing a state where the wheel 142 for low age is attached to the wheel 141 for high age of FIG. This schematic cross-sectional view illustrates a cross-section of a wheel 141 for a high age and a wheel 142 for a low age at a position similar to the line AA 'in FIG. As shown in FIG. 2, the wheel for high age 141 has a wheel for high age 141 c. A rubber tire 141 is provided on the outer periphery of the wheel for high age 141c.
b is formed with a constant width so as to draw a circumference. Such a wheel for high age 141c has a through hole 141a at the center thereof.

The frame 120 is inserted into the through hole 141a.
The axle 121 disposed on the side is penetrated. When the axle 121 is inserted into the through-hole 141a, its tip projects from the through-hole 141a. This protruding tip portion has a through hole 14.
The high-age wheel 141 is fixed to the axle 121 by a cap nut 143 having a diameter larger than 1a. Also, this wheel for high age 1
41c, as shown in FIG.
A mounting hole 141d for mounting is formed. The mounting holes 141d are formed, for example, at three positions as shown in FIG.

FIG. 3 is a view of the wheel 141 for high age of FIG. 2 as viewed from the left side in the figure. On the other hand, the low-age wheel 142 has a low-age wheel 142c for a low age, and a rubber tire 142b is formed on the outer periphery thereof, like the high-age wheel 141. The diameter of the low-age wheel 142 is, for example, about 180 mm. By the way, this low-age wheel 142
As shown in FIG. 2, the low-age wheel has a projection 142a for positioning, and the outer diameter of the projection 142a is equal to that of the mounting hole 1 provided in the high-age wheel 141c.
It is formed substantially in the same manner as the inner diameter of 41d.

The protruding portion 142a for positioning the low-month-old wheel 142 is, as shown in FIG.
After being inserted into the mounting holes 141d, screws, tapping or thumb screws are screwed into the positioning projections 142a as shown in FIG. 5, and the low-age wheel 142 and the high-age wheel 141 are Fixed. By the way, FIG.
FIG. The positioning protrusion 142a of the low-age wheel 142, the mounting hole 141d of the high-age wheel 141, and screws, tapping or thumb screws form a fixture. FIG. 4 is a view of the low-age wheel 142 shown in FIG. 2 as viewed from the right side in FIG. FIG.
As shown in FIG. 6, the low-age wheel 142 has, for example, three positioning 142a formed at three locations.

The stroller according to the present embodiment is configured as described above. The operation and the like will be described below. First, for example, a parent having a child such as an infant, as described above, until it becomes possible to sit alone,
Start using low strollers. At this time, in the present embodiment, a wheel 142 for low age is attached to a wheel 141 for high age of the stroller 100 in FIG. At this time, the guardian prepares, for example, six wheels 142 for a low age shown in FIG. That is, four low-age wheels 142 to be attached to the two twin wheels of the front wheel portion 140 and the rear wheel portion 1 respectively.
There are two low age wheels 142 to be attached to the 40 high age wheels 141.

The low-age wheels 142 are mounted outside the high-age wheels 141, respectively. Specifically, three high-age wheels 14 shown in FIGS.
The three positioning protrusions 142a of the low-age wheel 142 are inserted into the one mounting hole 141d. As a result, the low-age wheel 142 is accurately positioned with respect to the high-age wheel. Then, a screw, a tapping screw or a thumbscrew shown in FIG. 5 is screwed into the inside of the positioning projection 142a of the wheel 142 for the low age from the right side of the wheel 141 for the high age shown in FIG. The age wheel 142 is fixed to the high age wheel 141. By performing such fixing work on each wheel, the stroller 100 becomes a stroller for a young age.

As described above, it is possible to easily change a stroller for a high age into a stroller for a low age by a simple operation. In addition, when the infant grows up and can sit alone, the guardian tries to use a stroller for a long age, for ease of handling and the like. At this time, in the present embodiment, the guardian removes the low-month-old wheels 142 attached to the stroller 100. That is, a guardian loosens and removes the above-mentioned screws and the like attached to each wheel 141 in FIG. 2, and thereby removes the free low-age wheel 142 from the high-age wheel 141. By performing this work for each wheel 141, the wheels 142 for low moon age can be used.
Are all removed from the stroller 100, and the stroller 100 becomes a stroller for a high age.

As described above, the stroller 1 of the present embodiment is
According to 00, even one can be used as a baby stroller for low age.
Since it can be used also as a stroller for a high age, the guardian does not need to purchase both a stroller for a low age and a stroller for a high age, so that the economic burden is reduced. In addition, the stroller 100 of the present embodiment
Can be a baby stroller for a low age by a simple operation of being screwed by a guardian, and can be a baby stroller for a high age only by removing the screws and the like.
Therefore, even a guardian having two or more babies can easily change to a stroller for a lower age or a higher age depending on the babies to be boarded.

Further, the stroller 100 of the present embodiment
The switch between low and high ages only involves changing the wheels, and does not change the basic mechanism of the stroller, such as the bearing mechanism, so that parents can install parts of the basic mechanism in a defective state or use it incorrectly. Can be prevented beforehand.
Therefore, the stroller can be switched safely. The low-age wheel 142 has a configuration in which the positioning protrusion 142a is inserted into the mounting hole 141d of the high-age wheel 141, so that the low-age wheel 142 can be prevented from spinning. it can. Further, the positioning protrusion 142a and the mounting hole 141d are respectively provided with the low-age wheel 142c and the high-age wheel 14c.
1c and not formed on the tires 142b and 141b, so that even when the low age tire 142b is used, a load is not directly applied to the high age tire 141b.

(Second Embodiment) FIG. 6 is a schematic sectional view showing a wheel portion 240 of a stroller according to a second embodiment of the present invention. This schematic sectional view is taken along the line AA ′ in FIG.
FIG. 3 illustrates a cross section of the wheel portion 240 at a position similar to the line. FIG. 7 is an exploded cross-sectional view of the wheel section 240 of FIG. Since the wheel section 240 of the present embodiment has many parts in common with the wheel section 140 of the above-described first embodiment, common parts have the same reference numerals as those of the first embodiment. Therefore, the description thereof will be omitted, and the following description will focus on the differences. In the present embodiment, the wheel 1 for a high age
As in the first embodiment, a mounting hole 241d is formed in the high-age wheel 241c of No. 41, but this mounting hole 241d is a through hole unlike the first embodiment. Not.

As shown in FIG. 7, a push nut 244 is arranged on the axle 221 of this embodiment, and the wheel 241 for the high age is replaced with the wheel 2 for the low age.
42 is fixed by a cap nut 243.
The cap nut 243 may be a wheel cap. According to wheel portion 240 of the stroller of the present embodiment, attachment and detachment of wheel 242 for a low age can be performed by attaching or detaching wheel 242 to the outside of FIG.
In this case, the stroller is operated from the left side of the stroller, so that the stroller has the wheel portion 240 that is easily detachable by the parent. Furthermore,
Instead of fixing three places, by fixing one place,
Since each wheel part 240 is fixed, work becomes easy.

(Third Embodiment) FIG. 8 is a schematic sectional view showing a wheel section 340 of a stroller according to a third embodiment of the present invention. This schematic sectional view is taken along the line AA ′ in FIG.
A cross section of the wheel portion 340 is drawn at the same position as the line. FIG. 9 is an exploded sectional view of the wheel portion 340 of FIG. Since the wheel section 340 of the present embodiment has many parts in common with the wheel section 140 of the above-described first embodiment, the common parts are denoted by the same reference numerals as those of the first embodiment. Therefore, the description thereof will be omitted, and the following description will focus on the differences. Wheel section 3 of the stroller of the present embodiment
40 is different from the wheel portion 140 of the first embodiment described above, and as shown in FIG.
45 are arranged. An engagement claw 345a is formed at the tip of the engagement piece 345 as shown in FIG.

On the other hand, an engagement piece receiving hole 346 for inserting the engagement piece 345 is formed in the wheel 341 for a high age. In addition, an engagement convex portion 347 for engaging the engagement claw 345a of the engagement piece 345 is formed on the wheel 341 for high age. Therefore, when the parent attaches the low-month-old wheel 342 to the high-month-old wheel 341, the parent inserts the engaging piece 345 of the low-month-old wheel 342 into the engaging-piece receiving hole 346 of the high-month wheel 341. by doing,
The positioning of the low-age wheel 342 with respect to the high-age wheel 341 is possible. When the engagement piece 345 is further inserted into the engagement piece receiving hole 346, the engagement claw 345 a of the engagement piece 345 engages with the engagement projection 347. Then, as shown in FIG. 8, the wheel 342 for the low age is replaced with the wheel 3 for the high age.
41 will be securely attached. Therefore, the engagement piece 345, the engagement claw 345a, and the engagement receiving hole 346
The engaging mechanism is constituted by the engaging protrusion 347 and the like.

(Fourth Embodiment) FIG. 10 is a schematic sectional view showing a wheel section 440 of a stroller according to a fourth embodiment of the present invention. This schematic sectional view is shown in FIG.
The cross section of the wheel portion 440 is illustrated at the same position as the line A ′. FIG. 11 shows the wheel portion 44 of FIG.
0 is an exploded sectional view. Wheel section 440 of the present embodiment
Since the configuration is common to many parts of the wheel unit 340 of the third embodiment described above, the common parts are denoted by the same reference numerals as those of the third embodiment, and the description thereof will be omitted. Less than,
The differences will be mainly described. Wheel part 44 of the present embodiment
The wheel 341 for the high age of 0 has the same configuration as the wheel 341 of the third embodiment.

However, the wheels 442 for the low age may have a third
The engaging piece 345 provided in this embodiment is not formed, and instead, as shown in FIG.
46 are formed. In the present embodiment, unlike the third embodiment, a wheel cap 447 is provided as shown in FIG. As shown in FIG. 11, an engagement piece 445 and an engagement claw 445a are formed on the wheel cap 447. Therefore, the guardian inserts the engaging piece 445 of the wheel cap 447 into the engaging piece receiving hole 346 of the low-age wheel 442 and then into the engaging piece receiving hole 346 of the high-age wheel 341. Thus, the low-age wheel 442 is positioned with respect to the high-age wheel 341.

When the wheel cap 447 is further inserted deeper, the engaging claw 445a of the engaging piece 445 is engaged with the engaging convex portion 347 of the wheel 341 for a high age as shown in FIG. As described above, the wheel unit 440 according to the present embodiment is used.
Then, the wheel cap 447 is used for the wheel 442 for low age.
Can be firmly attached to the wheel 341 for high age. Also, since the wheel cap 447 is provided with a holding portion 448 as shown in FIG. 11, the holding portion 448 is provided with a wheel 4 for a low age as shown in FIG.
Hold down 42. Therefore, the low-age wheel 442 can be more stably attached to the high-age wheel 341.

(Fifth Embodiment) FIG. 12 is a schematic sectional view showing a wheel section 540 of a stroller according to a fifth embodiment of the present invention. This schematic sectional view is shown in FIG.
The cross section of the wheel portion 540 is illustrated at the same position as the line A ′. FIG. 13 shows the wheel section 54 of FIG.
0 is an exploded sectional view. Wheel section 540 of the present embodiment
Since the configuration is common to many parts of the wheel unit 140 of the first embodiment, the common parts are denoted by the same reference numerals as those of the first embodiment, and the description thereof is omitted. Less than,
The differences will be mainly described. Wheel part 54 of the present embodiment
The wheel 141 for a high age of 0 is the same as in the first embodiment described above. However, the low age wheel 542 of the wheel portion 540 has a screw forming portion 542a in which a screw is formed on the outer periphery instead of the positioning protrusion 142a of the first embodiment.
Is arranged.

Then, the screw forming portion 542a of the low-age wheel 542 is attached to the mounting hole 14 of the high-age wheel 141.
1d, the tip end is attached to the mounting hole 141d.
The length protrudes from Therefore, by screwing a nut or a wing nut or the like shown in FIG.
41 is firmly attached.

(Sixth Embodiment) FIG. 14 is a schematic sectional view showing a wheel section 640 of a stroller according to a sixth embodiment of the present invention. This schematic sectional view is shown in FIG.
The cross section of the wheel portion 640 is illustrated at the same position as the line A ′. FIG. 15 shows the wheel portion 64 of FIG.
0 is an exploded sectional view. Wheel section 640 of the present embodiment
Since the configuration is common to many parts of the wheel unit 540 of the above-described fifth embodiment, the common parts are denoted by the same reference numerals as those of the fifth embodiment, and the description thereof is omitted. Less than,
The differences will be mainly described. The low-age wheel 542 of the fifth embodiment is the low-age wheel 54 of the fifth embodiment.
2 has the same configuration as that of FIG. However, the wheel 541 for a high age
Is significantly different in that the tire 541a is not formed of rubber but is formed by hollow molding. By configuring the tire 541a as described above, the shock absorbing power during traveling can be increased, and the riding comfort can be improved even when the wheel 541 for a high age is used.

Further, the wheel 541 for a high age is a tire 5
As shown in FIG. 14, a hollow molded portion 541 is also provided inside 41a.
c is provided and has a width that functions as a mounting hole. As described above, the present invention can be applied to the wheel portion 640 including the high-age-age wheel 541 that does not use rubber for the tire 541b.

(Seventh Embodiment) FIG. 16 is a schematic sectional view showing a wheel section 740 of a stroller according to a seventh embodiment of the present invention. This schematic sectional view is shown in FIG.
The cross section of the wheel portion 740 is illustrated at the same position as the line A ′. FIG. 17 shows the wheel section 74 of FIG.
0 is an exploded sectional view. Wheel part 740 of the present embodiment
Since the configuration is common to many parts of the wheel unit 240 of the above-described second embodiment, the common parts are denoted by the same reference numerals as those of the second embodiment, and the description thereof is omitted. Less than,
The differences will be mainly described. In the present embodiment, a push nut 244 is provided at the tip of the axle 421 of the wheel 741 for the high age, as shown in FIG. The high age wheel 741c has a cylindrical projection 741d around which an external thread is formed.

At the center of the low-age wheel 742, an opening having a diameter larger than that of the projection 741d is formed in the cylindrical shape. Therefore, the wheel 74 for this low age
With the opening 2, the wheel for low age 742 can be attached to the wheel for high age 741 without abutting on the cylindrical protrusion 741d. In this embodiment, a screw wheel cap 745 as shown in FIG. 17 is provided. That is, the screw wheel cap 745 having a female screw formed inside is
By screwing the cylindrical projection 741d as shown in FIG.
5a will press the wheel 742 for low months. Thus, the flange 745 of the screw wheel cap 745
By a screwing on the protrusion 741d of the wheel for high age 741 while pressing the wheel 742 for low age, the wheel for low age 742 can be attached to the wheel for high age 741. At this time, each screw is attached to the wheel 741
It is possible to prevent the screws from being loosened due to the rotation by cutting in the opposite direction.

The present invention is not limited to the above embodiments. Further, the above-described embodiments may be configured in combination with each other.

[0039]

As described above, according to the present invention, 1
It is thus possible to provide a stroller that can serve as a plurality of strollers of different types.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a stroller to which the present invention is applied.

FIG. 2 is a schematic sectional view showing a wheel portion of the stroller according to the first embodiment.

FIG. 3 is a schematic view showing the wheel for high age of FIG. 2;

FIG. 4 is a schematic view showing the wheel for a low age of FIG. 2;

FIG. 5 is an exploded sectional view of FIG. 2;

FIG. 6 is a schematic sectional view showing a wheel portion of a stroller according to a second embodiment.

FIG. 7 is an exploded sectional view of FIG.

FIG. 8 is a schematic sectional view showing a wheel portion of a stroller according to a third embodiment.

9 is an exploded sectional view of FIG.

FIG. 10 is a schematic sectional view showing a wheel portion of a stroller according to a fourth embodiment.

FIG. 11 is an exploded sectional view of FIG.

FIG. 12 is a schematic sectional view showing a wheel portion of a stroller according to a fifth embodiment.

FIG. 13 is an exploded sectional view of FIG.

FIG. 14 is a schematic sectional view showing a wheel portion of a stroller according to a sixth embodiment.

FIG. 15 is an exploded sectional view of FIG.

FIG. 16 is a schematic sectional view showing a wheel portion of a stroller according to a seventh embodiment.

17 is an exploded sectional view of FIG.

[Explanation of symbols]

100 ... stroller, 110 ... seat, 111
... Seat surface, 112 ... Backrest, 120 ... Frame, 121, 221 ... Axle cup, 130 ...
Handle, 140, 240, 340... Wheel part, 14
1,241,341 ・ ・ ・ Wheel for high age, 141a ・
..Through holes, 141b ... tires, 141c, 241
d: Wheel for high age, 141d, 241d ...
Mounting holes, 142, 242, 342: wheels for low age, 142a: positioning projections, 142b
... Tires, 142c ... Low age wheels, 24
3 ... cap nut, 244 ... push nut, 34
5, 445 ... engaging piece, 345a, 445a ... engaging claw, 346 ... engaging piece receiving hole, 347 ... engaging projection, 447 ... wheel cap, 448 ... Holding part, 542a: screw forming part, 541c: hollow molding part

Claims (5)

[Claims] 1. A stroller having a riding section on which an infant rides, a frame section supporting the riding section, and a wheel section installed on the frame section, wherein the wheel section has a plurality of A stroller, wherein one wheel is disposed, and a second wheel having a different diameter is detachably attached to each of the plurality of first wheels. 2. The diameter of the first wheel is not less than φ115 mm and less than φ180 mm, and the diameter of the second wheel is φ1
The stroller according to claim 1, wherein the stroller is 80 mm or more. 3. The stroller according to claim 1, wherein the second wheel is configured to be attached to the first wheel by a fixing tool. 4. The stroller according to claim 3, wherein the fixing tool is fixed by a screwing or engaging mechanism. 5. The vehicle according to claim 2, wherein the first wheel has a plurality of wheels, and the second wheel is attached to each of the plurality of wheels.
The stroller according to any of the above.