JP2001260886A - Shopping cart - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shopping cart having less vibration at a seat portion, reducing its noise, and giving a long life to supporting legs. SOLUTION: The shopping cart which has supporting legs 30 at the lower part of the seat portion and paired front and rear wheel casters 35 mounted on the supporting legs 30 comprises shock absorbing springs 34 mounted between each of the supporting legs and each of the casters 35 and a hydraulic shock absorber 37 inserted in, at least, the rear-wheel spring 34. The hydraulic shock absorber has the upper end fixed to the supporting leg 30 and the lower end opposed to the caster 35 at a space.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shopping cart having a child seat and moving in a superstore.

[0002]

2. Description of the Related Art A conventional shopping cart has a pair of casters for a front wheel and a rear wheel attached to a lower end of a support leg, and a synthetic resin seat for an infant to sit on is provided above the support leg.

[0003]

Conventionally, the floor in a superstore is formed flat. However, in recent years, when an exhibition block is held, unevenness occurs on the floor surface. Therefore, when the shopping cart is moved inside the exhibition block, the shopping cart vibrates due to the unevenness of the floor surface, and the vibration is transmitted to the infant sitting on the seat portion, not only feeling discomfort, but also responding to the vibration. There is a problem that noise is generated. Furthermore, since the stress due to the vibration is repeatedly applied to the lower end of the support leg, there is a problem that the support leg is broken by fatigue.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a shopping cart that can reduce vibration of a seat portion, reduce noise, and achieve a longer life of a support leg. To offer.

[0005]

The invention according to claim 1 is described with reference to the reference numerals used in the embodiments.
In a shopping cart 10 provided with a support leg 30 at a lower portion of the support leg 30 and a pair of front wheel and rear wheel casters 35 paired with the support leg 30, a cushioning spring is provided between the support leg 30 and each caster 35. A hydraulic shock absorber 37 is inserted at least inside the rear wheel spring 34, and the upper end thereof is fixed to the support leg 30, and the lower end thereof is opposed to the caster 35 at an interval. There is a characteristic in the place where it is made

The second aspect of the present invention is characterized in that the shock absorbing spring 34 and the hydraulic shock absorber 37 are housed inside the support leg 30.

According to a third aspect of the present invention, the seat portion 20 includes a backrest support column 21 and an armrest portion 23, and the seat portion 24 is suspended from the armrest portion 23 by cloth suspending members 25 and 26. It has features.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a shopping cart 10 according to the present invention will be described below with reference to the drawings.

First, the seat section 20 will be described. FIG.
In FIG. 2, the two backrest struts 21 are arranged obliquely at a predetermined interval, and their upper ends are connected by a hand pushing portion 22. An armrest 2 is provided at the lower end of the support 22 for the backrest.
3 are connected. This is U-shaped, and both ends are connected to the backrest support column 21 to close the front surface thereof.

The seat 24 is formed of a seat plate provided with a cushioning material, and the side and front surfaces thereof are suspended from the armrest 23 by hanging members 25 and 26 made of cloth. This seat 24
Are integrally formed with a cloth-made backrest 27 connected to the backrest support column 22. The hanging members 25,
The infant's leg is inserted into the two gaps 26. A shelf 29 on which luggage is placed is provided behind the seat section 20.

The support leg 30 is composed of a pair of leg pipes 31 having a mountain shape, and the upper end is fixed to the armrest 23 by welding. The lower end of the leg pipe 31 is vertically bent, and a connecting rod 32 for connecting the front and rear is attached.

[0013] Next, on the front wheel side of the support leg 30 shown in FIG. The buffer spring 34 is accommodated in the leg pipe 31, and the upper end thereof is fixed to the receiver 33. The lower end of the buffer spring 34 is connected to the receiving portion 36 at the upper end of the caster 35.
It is stuck to.

Also on the rear wheel side of the support leg 30 shown in FIG. 1, a spring 34 is interposed between the receiving metal 33 of the leg pipe 31 and the receiving portion 36 at the upper end of the caster 35, similarly to the front wheel side. Have been. Further, a hydraulic shock absorber 37 having a well-known sliding portion 37a is inserted into the spring 34. The upper end of the hydraulic shock absorber 37 is fixed to the receiving metal 33 of the leg pipe 31, and the lower end faces the upper end of the caster 35 at a predetermined interval H. This interval H is set so that the hydraulic shock absorber 37 comes into contact with the receiving portion 36 of the caster 35 when the spring 34 is contracted in the use state, that is, when the child is sitting on the seat portion 20 and the luggage is placed on the shelf 28, or It is sufficient that a slight gap is generated. The load ratio between the front wheel and the rear wheel in the use state is generally about 3: 7, so that the spring constant of the buffer spring 34 may be set appropriately.

Next, the operation of the above embodiment will be described.
In the non-use state, the spring 34 has a free length, which is the distance H between the hydraulic shock absorber 37 and the upper end of the caster 35 (see FIG. 1). When in use, the spring 34 contracts due to the weight of the child and the weight of the luggage, and the sliding portion 37a of the hydraulic shock absorber 37 contacts the receiving portion 36 of the caster 35 or opposes it at a slight interval (see FIG. 2). .

[0015] Therefore, the casters 35 due to the unevenness of the floor surface.
When the wheels vibrate, the casters 35 collide with the hydraulic shock absorber 37 and the hydraulic shock absorber 37 is operated. As is well known, since the hydraulic shock absorber 37 has a damping effect, the vibration of the casters 35 is absorbed and quickly damped, so that the child of the seat portion 20 does not feel uncomfortable. On the other hand, the vibration on the front wheel side is absorbed by the spring 34.

Accordingly, the vibration of the seat portion 20 can be reduced, the noise can be reduced, and the repetitive load of the support leg 30 can be reduced, so that the life can be extended.

Further, since the seat portion 20 is suspended by the hanging members 25 and 26 made of cloth, vibration is further reduced as compared with the conventional synthetic resin seat portion.

Incidentally, the shock absorbing spring 34 and the hydraulic shock absorber 37
Is housed in the leg pipe 31, the appearance is improved.

[0019]

According to the first aspect of the present invention, there is provided a shopping cart having a support leg provided at a lower portion of a seat portion and a pair of front wheel and rear wheel casters attached to the support leg. And a hydraulic shock absorber is inserted at least inside the rear wheel spring, the upper end of which is fixed to the support leg, and the lower end of which is spaced from the caster. Because they faced each other,
Since the vibration is reduced, the infant does not feel uncomfortable, the noise can be reduced, and the life can be extended.

According to the second aspect of the present invention, since the shock-absorbing spring and the hydraulic shock-absorber are housed inside the support legs, the effect of improving the appearance can be obtained.

According to the third aspect of the present invention, the seat portion includes the backrest support column and the armrest portion, and the seat portion is suspended from the armrest portion by the suspension member made of cloth. Therefore, the vibration of the seat portion can be further reduced. Is played.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a rear wheel supporting leg in a non-use state.

FIG. 2 is a longitudinal sectional view of a rear wheel supporting leg in a use state.

FIG. 3 is a longitudinal sectional view of a front wheel supporting leg in a non-use state.

FIG. 4 is an overall perspective view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Shopping cart 20 Seat part 21 Post for backrest 23 Armrest part 24 Seat part 25 Hanging member 26 Hanging member 30 Support leg 31 Leg pipe 35 Caster 34 Buffer spring 37 Hydraulic shock absorber

Claims (3)

[Claims] 1. A shopping cart comprising a support leg provided at a lower portion of a seat portion and a pair of front wheel and rear wheel casters paired with the support leg, wherein a cushioning spring is provided between the support leg and each caster. And a hydraulic shock absorber is inserted at least inside the rear wheel spring, the upper end of which is fixed to the support leg, and the lower end is opposed to the caster at an interval. And a shopping cart. 2. The shopping cart according to claim 1, wherein the shock-absorbing spring and the hydraulic shock-absorber are housed inside the support legs. 3. The shopping cart according to claim 1, wherein the seat portion includes a backrest support column and an armrest portion, and the seat portion is suspended from the armrest portion by a cloth suspension member.