JP6389691B2 - Wheelbarrow - Google Patents

Description

  The present invention relates to a handcart for assisting a user's walking.

  2. Description of the Related Art A wheelbarrow that assists users in walking, such as elderly people and people who have difficulty walking normally, and that can carry luggage when shopping is known. Among such wheelbarrows, one having a seat portion on which a user can sit has been developed (for example, Patent Document 1).

  By providing the seat portion in this way, a user who is using the wheelbarrow can sit on the seat portion and take a break when feeling tired or the like, and an easy-to-use wheelbarrow can be provided to the user. it can.

  In addition, a wheelbarrow provided with a seat is often provided with an “elbow rest” on both sides of the seat so that the user's elbow can be placed while sitting on the seat. By providing such an elbow rest, when a user sitting on the seat rises, it is easy to get up by putting a part of the weight on the elbow rest. Further, even when the user is sitting on the seat, his / her body can be supported by using the elbow rest, and the sitting state can be easily maintained.

JP 2009-269495 A

  Incidentally, there are various needs for such a wheelbarrow, and for example, there is a need for a compact wheelbarrow in which the dimension in the width direction is set short.

  However, if the size in the width direction of the handcart is set to be short, the size in the width direction of the seat is inevitably reduced. For this reason, it has been difficult to provide a conventional elbow rest on a handcart whose dimensions in the width direction are set short. The distance between the elbow rests provided on both sides of the seat is shortened according to the width of the seat, and when a user with a general physique tries to sit on the seat, the elbow rest becomes an obstacle and the seat is smooth. This is because there is a possibility that it becomes impossible to use.

  Of course, if the distance between the elbow rests is set wider than the width of the seat, the possibility of getting in the way of the elbow rest will be reduced. Is no longer.

  The present invention has been made to solve such a problem. The purpose of the present invention is to allow the seat portion to be used without any problem even when the size in the width direction is set short to achieve compactness. In addition, similarly to the case where an elbow rest is provided, it is an object to provide a handcart that can easily hold a user sitting on a seat and can easily stand up from the seat.

According to an aspect of the present invention, a seat portion, a side member that is disposed on a side of the seat portion and on which a part of the weight of a user sitting on the seat portion can be hung, and the seat portion are raised. A wheelbarrow having a backrest member attached in a freely tiltable manner, wherein the height of the upper end position of the side member is higher than the height of the top surface of the seat portion, and the height of the upper end position and the ceiling the difference between the height of the surface thickness and hand truck is almost the same of the backrest member.
Further, according to another aspect of the present invention, a seat portion, a side member that is disposed on a side of the seat portion, on which a part of the weight of a user sitting on the seat portion is placed, and the seat portion a wheelbarrow manufacturing method and a raised or lowered freely mounted backrest member against the height of the upper end position of the side member, higher than the top surface of the height of the seat portion, and the upper end The difference between the height of the position and the height of the top surface is substantially the same as the thickness of the backrest member, and is set to be lower than the height of the widest position in the user's waist seated on the seat. There is provided a method for manufacturing a wheelbarrow having a step of:

  Throughout the present specification, the “height of the placed object placing member” refers to the part of the placed object placing member that comes into contact with the bottom of the placed object when the placed object is placed on the placed object placed member. It means the highest position among them (that is, the surface of the placing object placing member that contacts the placed object does not need to be flat). The “upper end position of the side member” refers to the position of the side member that is farthest from the ground when the handcart is placed on the horizontal ground in a usable direction. Further, unless otherwise specified, “height” means a height from the ground.

  According to the present invention, the height of the upper end position of the side member is set at a position lower than the height of the widest position of the user's waist seated on the seat, so the dimension in the width direction of the seat Even when the user is set to be narrow, the possibility that the side member hits the user's waist when the user sits on the seat or stands up is reduced, and the user sits on the seat. Thus, the user can easily place his / her hand on the side member, and a handcart can be provided in which the user can easily maintain the seated state.

It is a perspective view showing the handcart 100 concerning a 1st embodiment. It is a perspective view which shows the state which fell the backrest member 180 in the handcart 100 concerning 1st Embodiment. It is a front view which shows the handcart 100 concerning 1st Embodiment. It is a front view which shows the state which fell the backrest member 180 in the handcart 100 concerning 1st Embodiment. It is a front view which shows the state in which the user U of the average body shape seated to the seat part 160 of the handcart 100 concerning 1st Embodiment. It is a front view which shows the handcart 100 concerning a modification. It is a front view which shows the handcart 100 concerning a modification. It is a front view which shows the handcart 100 concerning a modification. It is a front view which shows the handcart 100 concerning a modification.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

<Overall Configuration of First Embodiment>
First, with reference to FIG. 1 and FIG. 2, the whole structure of the handcart 100 concerning this Embodiment is demonstrated. FIG. 1 is a perspective view showing a handcart 100 according to the first embodiment. FIG. 2 is a perspective view showing a state in which the backrest member 180 is tilted in the handcart 100 according to the first embodiment.

  The handcart 100 according to the present embodiment mainly includes a pair of front frames 111L and 111R, a pair of front wheels 112L and 112R, a pair of rear frames 113L and 113R, and a pair of rear wheels 114L and 114R. A pair of central coupling members 116L, 116R, a pair of link members 117L, 117R, a seat mounting frame 118, vertical frames 131L, 131R, a seat 160, a pair of backrest coupling brackets 165L, 165R, A backrest member 180, a handle 120, and a backrest raising / lowering mechanism 101 are provided.

  The upper ends of the front frames 111L and 111R are pivotally attached to the central connecting members 116L and 116R, respectively. The central coupling members 116L and 116R are respectively attached to the left and right portions of the seat mounting frame 118. The rear end portion of the seat portion mounting frame 118 is pivotally attached to the center of the vertical frames 131L and 131R so as to be able to turn slightly downward.

  Each of the rear frames 113L and 113R is inserted into and fixed to the central connecting members 116L and 116R. Side members 141L and 141R are integrally formed at the upper ends of the central coupling members 116L and 116R, respectively. Of course, the central connecting members 116L and 116R and the side members 141L and 141R may be formed separately and then joined together. The lower portions of the rear frames 113L and 113R are pivotally attached to the lower ends of the vertical frames 131L and 131R, respectively.

  Front wheels 112L and 112R are rotatably attached to lower ends of the front frames 111L and 111R, respectively. The front wheels 112L and 112R are attached to the front frames 111L and 111R so as to be rotatable (swinged) in the left-right direction. Thereby, the user can advance the wheelbarrow 100 in the direction which wants to go. The front wheels 112L and 112R used in the handcart 100 of the present embodiment have rotation restricting slides 115L and 115R, respectively. The user can permit or restrict the rotation of the front wheels 112L and 112R in the left-right direction with respect to the front frames 111L and 111R by changing the vertical positions of the rotation restriction slides 115L and 115R. . Of course, it is also possible to employ the front wheels 112L and 112R that do not have a horizontal turning mechanism.

  Rear wheels 114L and 114R are attached to lower ends of the rear frames 113L and 113R, respectively.

  Each of the pair of vertical frames 131L and 131R is pivotally attached to the lower part of the rear frames 113L and 113R. The lower part of the handle frame 121 is inserted into the vertical frames 131L and 131R so that the amount of insertion can be adjusted. A vertical frame reinforcing member 132 is installed between the pair of vertical frames 131L and 131R.

  The handle frame 121 is formed in a substantially inverted U shape in plan view. A brake bar 123 is attached to the front of the handle frame 121 so as to be rotatable in the vertical direction. When the user operates the brake bar 123, the braking force can be applied to the rear wheels 114L and 114R via a wire (not shown).

  Each of the link members 117L and 117R is a strip-shaped member that is substantially L-shaped in a side view. One end of each of the link members 117L and 117R is pivotally attached to the upper and lower central portions of the front frames 111L and 111R, and the other end is pivotally attached to the lower portion of the vertical frames 131L and 131R. In the present embodiment, when the front frames 111L and 111R are separated from the vertical frames 131L and 131R, that is, when the handcart 100 is in use, the link members 117L and 117R are maintained substantially horizontal. . When the front frames 111L and 111R are brought close to the vertical frames 131L and 131R, that is, when the handcart 100 is folded, in the present embodiment, the link members 117L and 117R are rearwardly upward with the lower end portion as an axis. To turn.

  The seat portion 160 includes a seat portion cover 260 in which a cushioning material such as urethane provided as necessary is covered with a decorative fabric, and a seat portion that is housed in the seat portion cover 260 and serves as a framework of the seat portion 160. Frame 262. The seat frame 262 has a rear end pivotally attached to the seat mounting frame 118. The seat 160 also serves as a lid for the bag 159 suspended from the seat mounting frame 118, and the user opens the upper opening of the bag 159 by raising the seat frame 262 rearward and upward. can do. Conversely, when the user sits down, the user sits on the seat 160 with the seat frame 262 down.

  The rear end of the seat mounting frame 118 is pivotally attached to the vertical frames 131L and 131R. Backrest connection brackets 165L and 165R are attached to the rear part of the seat mounting frame 118. Center connecting members 116L and 116R are pivotally attached to substantially the center in the front-rear direction on the left side surface and the right side surface of the seat mounting frame 118. When the user lifts the front portion of the seat mounting frame 118 and pivots it rearward and upward, the seat mounting frame 118, the front frames 111L and 111R, and the rear frames 113L and 113R become vertical frames 131L and 131R. Approaching, the wheelbarrow 100 is folded compactly in the front-rear direction.

  In addition to the above, a reinforcing frame 119A may be attached between the pair of front frames 111L and 111R, or a reinforcing frame 119B may be attached between the pair of rear frames 113L and 113R. Good.

  Next, the backrest raising / lowering mechanism 101 will be described. The backrest raising / lowering mechanism 101 generally includes a seat portion 160, a seat portion mounting frame 118, a backrest member 180, backrest connection brackets 165L and 165R, and a mounting object locking portion 188 provided as necessary. .

  The backrest member 180 includes a backrest frame 181 and a backrest cover 182. The back frame 181 is a member formed in a substantially U shape using a round pipe or the like, and each one end is attached to the back connection brackets 165L and 165R so as to be rotatable. That is, the backrest frame 181 is attached to the seat mounting frame 118 so that it can be tilted up and down.

  The backrest cover 182 may be formed in a bag shape so that the front end portion of the backrest frame 181 can be inserted, or may be formed so as to cover only one surface of the backrest frame 181.

  One surface of the backrest member 180 is used as the backrest surface 200. Specifically, the backrest surface 200 refers to a surface that faces the seat portion 160 when the backrest member 180 is raised with respect to the seat portion mounting frame 118. That is, when the user sits on the seat portion 160 with the backrest member 180 raised, the user's back comes into contact with the backrest surface 200 of the backrest member 180.

  On the contrary, the surface opposite to the backrest surface 200 in the backrest member 180 is used as the placement object placement surface 201. More specifically, the placing object placing surface 201 is configured such that when the backrest member 180 is tilted with respect to the seat mounting frame 118 (in other words, the backrest member 180 is placed so that the backrest surface 200 is close to the seat 160). When it is defeated), it is a surface that faces substantially upward. In this manner, the placing object G such as a shopping cart can be placed on the placing object placing surface 201 in a state where the backrest member 180 is tilted down.

  In the first embodiment, the backrest connection brackets 165L and 165R are attached to the seat mounting frame 118, and the backrest member 180 is raised and lowered with respect to the seat mounting frame 118 as described above. Although it is attached freely, the attachment position of the backrest member 180 is not limited to this, and in the first embodiment, for example, the vertical frames 131L and 131R, the front frames 111L and 111R, May be attached to the rear frames 113L and 113R. A frame on which the backrest member 180 is attached so as to be freely tilted is referred to as a “main frame” (that is, the seat mounting frame 118 is the main frame in the first embodiment). Further, the backrest connecting brackets 165L and 165R are respectively formed with recesses 166L and 166R into which the end portions of the backrest frame 181 are fitted. The recesses 166L and 166R are formed to be slightly smaller than the outer diameter of the backrest frame 181. For this reason, even if some vibration is applied with the back frame 181 fitted in the recesses 166L and 166R, the back frame 181 is undesirably difficult to come off from the recesses 166L and 166R. The shape of the backrest connection brackets 165L and 165R is not limited to the above embodiment, and other modes can be adopted as long as the backrest member 180 can be attached to the main frame so that it can be tilted.

  The placement object locking portion 188 is placed at the front end portion of the placement object placement surface 201 (the end portion that is the farthest away from the end portion of the backrest member 180 attached to the seat attachment frame 118 in the direction in which the backrest member 180 extends). It protrudes from the figurine placement surface 201. When the placement object G is placed on the placement object placement surface 201 of the backrest member 180, the placement object locking portion 188 contacts a part of the placement object G (for example, a side surface close to the bottom surface of the placement object G). Thus, the object G is difficult to undesirably move in the direction in which the backrest member 180 extends. Therefore, as long as such an object can be achieved, the angle at which the mounted object locking portion 188 protrudes from the mounted object mounting surface 201 is not particularly limited. Further, in the first embodiment, the placement object locking portion 188 is attached to the distal end side of the backrest frame 181, but the placement object G extends in the direction in which the backrest member 180 extends (in this embodiment, the handcart 100. As long as it is difficult to move undesirably in the advancing direction), the place where the placement object locking portion 188 is attached is not limited to this embodiment.

<About the side members 141L and 141R>
Next, the side members 141L and 141R in the handcart 100 according to the first embodiment will be described in detail. As described above, in the first embodiment, the side members 141L and 141R are integrally formed with the central coupling members 116L and 116R, respectively. Further, the side members 141L and 141R are formed in a substantially half-moon shape in plan view, and the upper end is flat.

  Further, as shown in FIGS. 3 and 4, the side members 141L and 141R are located outside the seat portion 160 as compared to the central coupling members 116L and 116R (outside the front frames 111L and 111R). positioned.). In order to realize such a positional relationship, curved portions 930 </ b> L and 930 </ b> R are formed on the inner side (side facing the seat portion 160) of the side members 141 </ b> L and 141 </ b> R so as to be largely outwardly bent in a front view.

  Furthermore, the upper end positions of the side members 141L and 141R will be described. As shown in FIG. 3, the heights H1 of the upper end positions 900L and 900R of the side members 141L and 141R are set to the same height, and are higher than the height H2 of the top surface 920 of the seat 160. Set to position.

  In the first embodiment, the difference ΔH between the height H1 of the upper end positions 900L and 900R of the side members 141L and 141R and the height H2 of the top surface 920 of the seat 160 is the thickness of the back member 180. It is set to have almost the same size as T (see FIG. 4). That is, as shown in FIG. 4, when the backrest member 180 is tilted, the height H3 of the placement object mounting surface 201 of the backrest member 180 and the heights H1 of the upper end positions 900L and 900R of the side members 141L and 141R are obtained. It is set to be approximately the same height.

  Furthermore, as shown in FIG. 5, the height H1 of the upper end positions 900L and 900R of the side members 141L and 141R is lower than the height H4 of the widest position W of the waist of the user U seated on the seat 160. Set to position.

<Characteristics of the side members 141L and 141R according to the first embodiment>
According to the side members 141L and 141R according to the first embodiment, when the backrest member 180 is tilted down, the height H3 of the placement object placement surface 201 of the backrest member 180 and the upper ends of the side members 141L and 141R. The heights H1 of the positions 900L and 900R are set to be substantially the same. Thereby, when the placing object G such as a shopping cart is placed on the placing object placing surface 201, the side members 141L and 141R can support the bottom of the placed object G together with the placed object placing surface 201, so that it is more stable. Thus, the object G can be supported. That is, the backrest member 180 in the first embodiment also has a role as a placement object placement member. Further, the height H3 of the placement object placement surface 201 when the backrest member 180 is tilted becomes the “height of the placement part placement member”.

  In addition, the heights H1 of the upper end positions 900L and 900R of the side members 141L and 141R are set to be lower than the height H4 of the widest position W of the waist of the user U sitting on the seat 160. For this reason, even when the width of the top surface 920 of the seat portion 160 is set to be narrow, the side members 141L and 141R are used by the user when the user U sits on the seat portion 160 or stands up. It is possible to reduce the possibility of hitting the waist of U and getting in the way. Furthermore, by setting the heights H1 of the upper end positions 900L and 900R of the side members 141L and 141R to be low as described above, the user U sitting on the seat portion 160 can easily place his hands on the side members 141L and 141R. When the user U grips the side members 141L and 141R as necessary, the user U can easily hold the seat while supporting his / her body (that is, the side members 141L and 141R are “held” in this case). It also has a role as a member.)

  Further, since the curved portions 930L and 930R that are largely outwardly curved in a front view are formed inside the side members 141L and 141R, the side members 141L and 141R are compared with the central coupling members 116L and 116R. Can be positioned outside the seat 160. Thereby, when the user U sits on the said seat part 160 or stands up, the possibility that the side members 141L and 141R may hit the user's U waist and become obstructive can further be reduced.

<Modification>
(1)
The aspect of the side members 141L and 141R is not limited to that of the above-described embodiment. For example, as shown in FIG. 6, the heights H1 of the upper end positions 900L, 900R of the side members 141L, 141R may be set to coincide with the height H2 of the top surface 920 of the seat 160. The modification shown in FIG. 6 is suitable when the backrest member 180 of the handcart 100 is fixed and the backrest member 180 cannot be tilted with respect to the seat portion 160.

  In this case, the seat portion 160 serves as a placement object placement member, and the height H2 of the top surface 920 of the seat portion 160 becomes the “height of the placement object placement member”. When the placing object G such as a shopping cart is placed on the top surface 920, the bottom of the placing object G can be supported by the side members 141L and 141R together with the top surface 920, so that the placing object G can be supported more stably. .

(2)
Further, the shapes of the side members 141L and 141R are not limited to those of the first embodiment. For example, as illustrated in FIG. 7, the side members 141L and 141R may have a shape having corners 940L and 940R in a cross-sectional shape in a front view. In the modification shown in FIG. 7, one of the corner portions 940L and 940R is formed above the side members 141L and 141R, and the top portions of the corner portions 940L and 940R are the upper end positions 900L and 900R of the side members 141L and 141R. It has become.

  In FIG. 7, the heights H1 of the upper end positions 900L and 900R of the side members 141L and 141R are set to coincide with the height H2 of the top surface 920 of the seat 160, but the first embodiment As in the embodiment, the heights of the upper end positions 900L and 900R may be set to be higher than the height H2 of the top surface 920 of the seat portion 160.

(3)
Moreover, as shown in FIG. 8, you may use the side members 141L and 141R whose cross-sectional shape in a front view is substantially circular shape. Also in this case, the heights H1 of the upper end positions 900L and 900R (contact points between the virtual horizontal line L and the side members 141L and 141R) of the side members 141L and 141R are made to coincide with the height H2 of the top surface 920 of the seat 160. Alternatively, the height of the upper end positions 900L and 900R may be set to a position higher than the height H2 of the top surface 920 of the seat portion 160.

(4)
Further, as shown in FIG. 9, side members 141L and 141R having a rectangular cross-sectional shape in front view may be used. Also in this case, the height H1 of the upper end positions 900L and 900R of the side members 141L and 141R (the top surfaces 950L and 950R of the side members 141L and 141R) and the height H2 of the top surface 920 of the seat 160 are matched. The heights of the upper end positions 900L and 900R may be set higher than the height H2 of the top surface 920 of the seat 160.

(5)
In the embodiment described above, the side members 141L and 141R are connected to the central connecting members 116L and 116R, respectively, and are disposed at predetermined positions. However, the arrangement of the side members 141L and 141R is not limited to this as long as it is disposed on the side of the seat 160. For example, the side members 141L, 141R and the central coupling members 116L, 116R are configured separately, and the rear ends of the side members 141L, 141R are connected to the vertical frames 131L, 131R, whereby the side members 141L, 141R are connected to the vertical frame 131L. , 131R. Further, the side members 141L and 141R may be arranged from the seat mounting frame 118 toward the outer upper direction in a front view.

(6)
In the case where the backrest member 180 is not a retractable type but a fixed type, when placing the placing object G, for example, a plate-like placing object placing member (not shown) is previously placed on the top surface 920 of the seat 160. (That is, the placement object placement member is disposed above the top surface 920 of the seat portion 160). Thereby, it is possible to avoid the top surface 920 of the seat 160 from being damaged or soiled at the bottom of the mounted object G. In this case, the height of the top surface of the placed object placing member placed on the seat 160 (= the height of the placed object placing member) and the heights H1 of the upper end positions 900L and 900R of the side members 141L and 141R, Are preferably set at substantially the same height.

(7)
In the embodiment described above, an example in which the pair of side members 141L and 141R is provided has been described. However, by providing only one of the pair of side members 141L and 141R, the effect of the present invention can be achieved. Of course, it is more preferable to provide both side members 141L and 141R.

(8)
Further, as shown in FIG. 5, when the pair of side members 141L and 141R are provided on both sides of the seat portion 160, the space Ut between the pair of side members 141L and 141R is set by the user U sitting on the seat portion 160. It is preferable that the width is set to be narrower than the width (sitting width) Wh at the widest position in the waist. Here, the “interval Wt between the pair of side members 141L and 141R” is the same height as the upper end positions 900L and 900R, and the side members 141L and 141R that are closest to the opposing side members 141L and 141R. The distance between the top points.

  This width (the width of the sitting position) Wh has been published by the Research Center for Human Life Engineering from 2000 to 2001 (URL: http://www.hql.jp/project/funcdb2000) /). According to this result, the average value of the width (sitting width) Wh of 206 elderly people (60 to 79 years old) was 347 mm. Therefore, by setting the interval Wt to be smaller than the average value, the interval Wt becomes narrower than the width (sitting position width) Wh of many users U.

(9)
The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 100: Wheelbarrow 101: Back raising / lowering mechanism 111L: Front side frame 111R: Front side frame 112L: Front side wheel 112R: Front side wheel 113L: Rear side frame 113R: Rear side frame 114L: Rear side wheel 114R: Rear side wheel 115L: Rotation Regulation slide 115R: Rotation regulation slide 116L: Central coupling member 116R: Central coupling member 117L: Link member 117R: Link member 118: Seat mounting frame 119A: Reinforcement frame 119B: Reinforcement frame 120: Handle 121: Handle frame 123 : Brake bar 131L: Vertical frame 131R: Vertical frame 132: Vertical frame reinforcing member 141L: Side member 141R: Side member 159: Bag 160: Seat 165L: Backrest connection bracket 165R: Backrest connection Bracket 166L: Recess 166R: Recess 180: Backrest member 181: Backrest frame 182: Backrest cover 188: Mounted object locking part 200: Backrest surface 201: Mounted object mounting surface 260: Seat part cover 262: Seat part frame 900L : Upper end position 900R (of the side member): Upper end position 920 (of the side member): Top surface 930L (of the seat): Curved portion 930R: Curved portion 940L: Corner portion 940R: Corner portion 950L: Top of (side member) Surface 950R: Top surface (of side member)

Claims (2)

A seat,
A side member that is disposed on the side of the seat and on which a part of the weight of the user sitting on the seat is put;
A wheelbarrow having a backrest member attached to the seat part so as to be freely tilted,
The height of the upper end position of the side member is higher than the top surface of the height of the seat, and is substantially the same difference in height and the top surface of the upper end position and thickness of said back member Wheelbarrow. A seat,
A side member that is disposed on the side of the seat and on which a part of the weight of the user sitting on the seat is put;
A wheelbarrow manufacturing method having a backrest member attached to the seat portion so as to be tiltable,
The height of the upper end position of the side member, higher than the top surface of the height of the seat, and the difference between the height of the height and the top surface of the upper end position is substantially the same as the thickness of said back member A method for manufacturing a wheelbarrow, comprising a step of setting the position so as to be lower than the height of the widest position in the waist of the user sitting on the seat.

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