JP5720063B1 - Shopping cart with width adjustment mechanism - Google Patents

Abstract

To provide a shopping cart that can be stably transported even when a load having a large bottom surface is placed, and that does not take up space even when the load to be loaded is not large. Plate members 4 and 5 are slidably attached to a base portion 1 of a shopping cart. The plate members 4 and 5 are slidable in directions opposite to each other, and the size of the mounting surface of the plate members 4 and 5 is substantially the same as that of the base portion 1 during normal use. In doing so, the plate members 4 and 5 are slid in opposite directions to be locked at a position where the size of the mounting surface of the plate members 4 and 5 becomes larger than the base portion 1. [Selection] Figure 2

Description

  The present invention relates to a cart of a type operated with one hand, called a shopping cart or a carrying cart.

  Conventionally, a type of cart called a shopping cart or a carrying cart that is operated with one hand is known. This type of cart is used for the purpose of easily carrying heavy luggage when shopping, and various types of carts are commercially available.

  There are two types of shopping carts that are operated with one hand, one with two wheels attached to the bottom and the other with four wheels attached to the bottom. Of these, the former has to be moved while tilting the cart when the cart is loaded, while the latter can be moved without tilting the cart.

  Patent Document 1 describes a shopping cart of a type in which four wheels are attached to the bottom surface. The shopping cart described in Patent Document 1 stores articles in an article storage bag (not shown), and uses the article storage bag placed on the placement surface 10 (paragraphs [0022], [ 0023]).

JP 2013-1204040 A

  Although the shopping cart as described in Patent Document 1 is convenient for transporting heavy loads, when an article storage bag having a large bottom surface area is used, transport becomes unstable. There are drawbacks. In order to improve such a defect, the placement surface 10 may be made larger. However, in such a case, there is a problem that a space is taken even when the article storage bag is not large.

  The present invention has been made to solve such a problem, and the object of the present invention is to stably transport an article having a large bottom surface or an article storage bag. Moreover, it is to provide a shopping cart that does not take up space even when the luggage to be loaded is not large.

  In order to achieve the above object, a shopping cart with a width adjusting mechanism according to the present invention includes a base part having a plurality of wheels attached to the bottom surface and a surface opposite to the base part, and the base part A first plate that has a handle portion attached to the first mounting plate and has a locked portion and is slidably attached to the mounting surface, and the first plate with respect to the mounting surface. A second plate slidably mounted in the opposite direction; a locking means having at least one locking portion for locking the locked portion; and releasing the locking means. And at least one of the first plate and the second plate is urged to slide toward each other by a spring, and when one is slid, the other is the same Can be moved in the opposite direction by the distance, and in normal use Is superimposed so that the size of the first plate and the second plate is substantially the same size as the base part, and when used in an expanded state, the first plate and the second plate are The locking portion locks the locked portion at a position where the first plate and the second plate are slid in opposite directions to be larger than the base portion, and the locking releasing means is When the locking of the locking portion with respect to the locked portion is released, the first plate and the second plate are approximately the same size as the base portion due to the biasing force of the spring. Move to the same size.

  In the shopping cart with a width adjusting mechanism of the present invention, the third plate has a hinge on the base portion so that the base plate can be folded in a direction perpendicular to the sliding direction of the first plate and the second plate. It may be attached via.

  The shopping cart with a width adjusting mechanism according to the present invention has a locked portion, is attached to the bottom surface of the base portion, and is urged from the base portion toward the ground by a spring. And a brake locking mechanism having a locking portion for locking the locked portion of the brake member and locking the brake member when the brake is not used, and the brake locking mechanism when the brake is used A brake lock release mechanism for releasing the lock.

  According to the present invention, the first plate and the second plate that are slidable in directions opposite to each other are attached to the base surface. Therefore, when placing an article having a large bottom surface or an article storage bag on the placement surface, the first plate is provided. The plate and the second plate can be slid to widen the mounting surface and stably transported. In normal use, the first plate and the second plate are approximately the same size as the base part. Thus, there is an advantage that it is not necessary to take an extra place.

1 is an overall perspective view of a shopping cart with a width adjusting mechanism according to the present invention. It is an enlarged view of the mounting surface vicinity of the shopping cart with a width adjusting mechanism according to the present invention. It is the figure which showed the width adjustment mechanism of the mounting surface of the shopping cart with a width adjustment mechanism which concerns on this invention, (a) is an exploded perspective view, (b) has shown the side view. It is the figure which showed the locking mechanism for performing width adjustment of the shopping cart with the width adjustment mechanism which concerns on this invention, (a) is a perspective view, (b) is a front view, (c), (d) Shows a side view. It is the figure which showed the non-brake state of the brake mechanism of the shopping cart with a width adjustment mechanism which concerns on this invention. It is the figure which showed the brake state of the brake mechanism of the shopping cart with a width adjustment mechanism which concerns on this invention. It is the figure which showed the modification of the width adjustment mechanism of the mounting surface of the shopping cart with a width adjustment mechanism which concerns on this invention.

  A mode for carrying out the present invention will be described in detail with reference to the drawings. FIG. 1 is an overall perspective view of a shopping cart with a width adjusting mechanism according to the present invention, and FIG. 2 is an enlarged view of the vicinity of the mounting surface. 3A and 3B are diagrams showing the back side of the mounting surface, where FIG. 3A is an exploded perspective view, and FIG. 3B is a view of the inside viewed from the side. 4A and 4B are diagrams showing a locking mechanism when performing width adjustment, where FIG. 4A is a perspective view seen from the same angle as FIG. 2, FIG. 4B is a front view, and FIGS. ) Shows a side view. 5 and 6 are diagrams showing the brake mechanism, where (a) shows a non-brake state and (b) shows a brake state. FIG. 7 is a view showing a modification of the slide mechanism for sliding the plate member constituting the placement surface in the width direction.

  First, the external appearance of the shopping cart with a width adjusting mechanism according to the present invention will be described with reference to FIG. The shopping cart with a width adjusting mechanism according to the present invention includes a base portion 1, a plurality of wheels 2 attached to the bottom surface of the base portion 1, and a surface opposite to the bottom surface of the base portion 1. And a retractable handle 3 attached to the side. And the recessed part 1a is formed in the surface side of the base part 1, and the axis | shaft 1b is provided in the center part of the recessed part 1a. An attachment portion 1c is formed in the vicinity of the position where the handle portion 3 of the base portion 1 is attached. This attachment portion 1c is shown only in FIG. Further, a hinge portion 1 d is formed at the edge on the surface side of the base portion 1.

  Next, the plate member attached to the base unit 1 will be described with reference to FIGS. On the surface side of the base portion 1, two plate members 4 and 5 are attached so as to be slidable in the width direction so as to cover the concave portion 1a. Among these, the plate member 4 has a placement portion 4a, a bent portion 4b, and a locked portion 4c, and a long hole 4d is formed in the approximate center of the placement portion 4a. A wire attachment shaft 4e is provided on the surface on the concave portion 1a side when it is disposed on 1a. Further, the plate member 5 has a placement portion 5a and a bent portion 5b, and a long hole 5c and a relief hole 5d are formed in the approximate center of the placement portion 5a. A wire attachment shaft 5e and a spring attachment shaft 5f are provided on the surface on the concave portion 1a side when arranged. The two plate members 4 and 5 are fixed by inserting the shaft 1b through the long holes 4d and 5c and screwing the shaft 1b. Therefore, when the two plate members 4 and 5 are slid, the movement amount is regulated by the shaft 1b coming into contact with both ends of the long holes 4d and 5c. Further, the wire attachment shaft 4 e of the plate member 4 is inserted into the escape hole 5 d of the plate member 5.

  A mechanism for sliding these plate members 4 and 5 will be described. FIG. 3 is a view showing a slide mechanism for sliding the placement surface of the shopping cart with a width adjusting mechanism according to the present invention in the width direction. FIG. 3 (a) shows the plate members 4 and 5 and the base portion. 1 is an exploded perspective view of the concave portion 1a of FIG. 1, and FIG. 3B is a view of the inside of the concave portions 1a of the plate members 4 and 5 and the base portion 1 as viewed from the side. Two pulleys 6, 7 and a spring 8 are attached inside the recess 1 a of the base part 1. The wire 9 is attached to the wire attachment shafts 4e and 5e of the two plate members 4 and 5 via the pulley 6, and the wire 10 is connected to the two plate members 4 and 5 via the pulley 7. 5 is attached to the wire attachment shafts 4e and 5e. Since the two plate members 4 and 5 are connected by the wires 9 and 10 in this way, when one plate member is slid, the other plate member is also slid in the opposite direction. Further, the plate member 5 is always urged to the right in FIG. Therefore, the plate member 4 connected by the plate member 5 and the wire 10 is always urged in the left direction in FIG. The spring 8 may be attached so as to urge the plate member 4 in the left direction in FIG. Further, a spring may be attached to each of the plate members 4 and 5 so as to bias the plate member 4 in the left direction in FIG. 3 and the plate member 5 in the right direction in FIG.

  4 (a) is a perspective view showing a locking mechanism when adjusting the width of the shopping cart with a width adjusting mechanism according to the present invention, FIG. 4 (b) is a front view thereof, and FIG. c) and (d) are side views thereof. In FIG. 4A, the case portion of the locking mechanism 11 illustrated in FIGS. 4B to 4D is omitted in order to facilitate understanding of the positional relationship between the members. . On the surface side of the base portion 1, a locking mechanism 11 is provided in the vicinity of the position where the handle portion 3 is attached. The locking mechanism 11 includes a locking member 12 and a locking release button 13. The locking member 12 has two locking portions 12a and 12b and a notch 12c, and is rotatably attached to the mounting portion 1c. And the latching | locking part 12a consists of the slope 12a-1 and the latching surface 12a-2, and the latching | locking part 12b consists of the slope 12b-1 and the latching surface 12b-2.

  The lock release button 13 is attached through the notch 12c of the lock member 12. The lock release button 13 includes a head portion 13a, a shaft 13b, and a spring 13c. A spring 13c is attached to the shaft 13b, and the head 13a is urged upward in FIG. 4 (c), and the locking member 12 is attached clockwise in FIG. 4 (c). It is fast. Then, when the head portion 13a of the lock release button 13 is pressed, the lock member 12 is rotated counterclockwise in FIG. 4C, and the state shown in FIG. When the pressing of the head portion 13a of the unlocking button 13 is released from the state shown in FIG. 4D, the locking member 12 is rotated clockwise in FIG. 4D by the biasing force of the spring 13c. It is rotated to return to the state shown in FIG.

  A plate member 14 is attached to the surface side of the base portion 1 via a hinge portion 1d. The plate member 14 has one surface as a placement portion 14a and the other surface as a placement portion 14b, and is attached to the hinge portion 1d by a pin member so as to be rotatable.

  A brake mechanism 15 is provided in the vicinity of the locking mechanism 11 on the surface side of the base portion 1. The brake mechanism 15 includes a brake member 16, a brake locking member 17, and a brake locking release button 18. The brake member 16 has a rubber friction portion 16b at one end portion of the shaft portion 16a and a locked portion 16c at the other end portion, and the friction portion 16b is the base portion 1. The locked portion 16c is attached through the base portion 1 so as to be disposed on the surface side of the base portion 1 on the bottom surface side of the base portion 1, respectively. The brake member 16 has a spring 16d attached to the shaft portion 16a, and the friction portion 16b is urged away from the base portion 1 by the spring 16d.

  The brake locking member 17 has a locking portion 17a and a pressed portion 17b, and is biased leftward in FIG. 5 by a spring 17c. The brake locking release button 18 has a head portion 18a, a pressing portion 18b, and a spring 18c, and is urged upward in FIG. 5 by the spring 18c.

  Next, the usage method of the shopping cart with a width adjusting mechanism according to the present invention will be described. The shopping cart with a width adjusting mechanism according to the present invention can carry an article storage bag (not shown) and store and transport the article in the article storage bag. It is also possible to carry the article by placing it directly on the base 1. In the following description, sliding the plate members 4 and 5 away from each other is referred to as “sliding in the opening direction”, and sliding in the direction approaching each other is referred to as “sliding in the closing direction”. The state in which the plate members 4 and 5 are slid most in the closing direction is referred to as an “initial state”. The plate members 4 and 5 slide in the opening direction from the initial state, and the locked portion 4c is the locking portion. The state locked to 12a is referred to as “first expanded state”, and the plate members 4 and 5 slide further in the opening direction from the first expanded state, and the locked portion 4c is engaged with the locking portion 12b. The stopped state is referred to as a “second expanded state”.

  When the amount of articles to be transported is not large, the plate members 4 and 5 of the base unit 1 are in an initial state. At this time, the locked portion 4c of the plate member 4 is located on the leftmost side among the three positions shown in FIG.

  When the amount of articles to be transported is large, one of the plate members 4 and 5 of the base unit 1 is slid in the opening direction. At this time, when one of the plate members 4 and 5 is slid in the opening direction, the other is also slid in the opening direction by the wire 9 or 10, and the area of the placement surfaces 4a and 5a is increased. When the plate members 4 and 5 are slid in the opening direction, the locked portion 4c of the plate member 4 comes into contact with the inclined surface 12a-1 of the locking portion 12a of the locking member 12, and the biasing force of the spring 13c is applied. The locking member 12 is pushed up against it. That is, the locking member 12 is rotated counterclockwise from the state of FIG. When the plate members 4 and 5 are further slid in the opening direction, the locked portion 4c of the plate member 4 is detached from the inclined surface 12a-1, and the locking member 12 is moved by the biasing force of the spring 13c as shown in FIG. Is rotated clockwise. In this way, the plate members 4 and 5 are slid in the opening direction in a state where the locked portion 4c of the plate member 4 is located between the locking portion 12a and the locking portion 12b of the locking member 12. When the plate member 5 is stopped, the plate member 5 is slid in the closing direction by the urging force of the spring 8, and the plate member 4 is also slid in the closing direction. Therefore, the locked portion 4c of the plate member 4 is brought into contact with and locked with the locking surface 12a-2 of the locking portion 12a. This state is the first extended state. At this time, the locked portion 4c of the plate member 4 is located at the center among the three positions shown in FIG.

  When the plate members 4 and 5 are further slid in the opening direction from the first expanded state, the locked portion 4c of the plate member 4 contacts the inclined surface 12b-1 of the locking portion 12b of the locking member 12. The locking member 12 is pushed up against the biasing force of the spring 13c. That is, the locking member 12 is rotated counterclockwise from the state of FIG. When the plate members 4 and 5 are further slid in the opening direction, the locked portion 4c of the plate member 4 is detached from the inclined surface 12b-1, and the locking member 12 is moved by the biasing force of the spring 13c as shown in FIG. Is rotated clockwise. In this manner, when the sliding of the plate members 4 and 5 in the opening direction is stopped at the position where the locked portion 4c of the plate member 4 slides in the opening direction relative to the locking portion 12b of the locking member 12, the plate The member 5 is slid in the closing direction by the urging force of the spring 8, and the plate member 4 is also slid in the closing direction. Therefore, the locked portion 4c of the plate member 4 is brought into contact with and locked with the locking surface 12b-2 of the locking portion 12a. This state is the second expanded state. At this time, the locked portion 4c of the plate member 4 is located on the rightmost side among the three positions shown in FIG.

  When returning the plate members 4 and 5 from the first or second expanded state to the initial state, the locking release button 13 is pushed. Then, the lock release button 13 moves downward from the state of FIG. 4C against the urging force of the spring 13c, and the lock member 12 rotates counterclockwise from the state of FIG. 4C. Be moved. When the locking member 12 is in the state shown in FIG. 4D, the locked portion 4c of the plate member 4 is released from being locked by the locking portion 12a or the locking portion 12b of the locking member 12, and the plate The members 4 and 5 are each slid in the closing direction by the biasing force of the spring 8. Then, when the shaft 1b comes into contact with the edges of the long holes 4a and 5a and the plate members 4 and 5 are slid most in the closing direction, the shaft 1b stops and enters an initial state.

  As described above, since the shopping cart with a width adjusting mechanism according to the present invention has the plate members 4 and 5 slidably attached to the base portion 1, an article or an article storage bag having a large bottom surface area can be used. Even when it is placed, it can be stably transported by adjusting the width of the placement surface. Furthermore, the shopping cart with a width adjusting mechanism according to the present invention can be expanded simply by sliding one plate member when adjusting the width, and when releasing the extended state, the lock release button is used. Since it can be released simply by pressing, the width adjustment operation can be performed very easily.

  The shopping cart with a width adjusting mechanism according to the present invention can enlarge the placement surface by using the plate member 14 in addition to sliding the plate members 4 and 5. The plate member 14 is attached to the hinge portion 1d of the base portion 1 and is usually arranged so as to overlap the plate members 4 and 5, and an article can be placed on the placement surface 14a. It has become. When it is necessary to widen the mounting surface of the base unit 1, the article can be mounted on the mounting surface 14b by rotating the plate member 14 by 180 degrees about the hinge 1d.

  Next, the brake mechanism will be described with reference to FIGS. The shopping cart with a width adjusting mechanism according to the present invention can be operated with one hand, but on a slope or the like, it must always be supported by hand so as not to move freely. In such a case, the cart body can be kept in place by using the brake mechanism.

  The brake mechanism attached to the base unit 1 includes a brake member 16, a brake locking member 17, and a brake locking release button 18. The brake member 16 has a friction portion 16b attached to one end portion of a shaft portion 16a and a locked portion 16c attached to the other end portion, and is biased toward the ground G by a spring 16d. Has been. The brake locking member 17 has a locking portion 17a and a pressed portion 17b, and is biased in a direction to press the locking portion 17a against the locked portion 16c of the brake member 16 by a spring 17c. . The brake locking release button 18 has a head portion 18a and a pressing portion 18b, and is urged in a direction away from the pressed portion 17b of the brake locking member 17 by a spring 18c.

  In the non-brake state shown in FIG. 5, the brake member 16 has its locked portion 16 c locked to the locking portion 17 a of the brake locking member 17 so that the friction portion 16 b does not come into contact with the ground G by the biasing force of the spring 16 d. It is locked to. When shifting from the non-brake state to the brake state, the brake locking release button 18 is pressed. Then, when the pressing portion 18b of the brake locking release button 18 presses the pressed portion 17b of the brake locking member 17, the brake locking member 17 is moved rightward in FIG. Therefore, the locking by the locking portion 17a of the brake locking member 17 is released, the brake member 16 is moved in the direction of the ground G by the urging force of the spring 16d, and stops when the friction portion 16b contacts the ground G. . This state is the brake state shown in FIG. In this brake state, since the friction part 16d is pressed against the ground G by the urging force of the spring 16d, even if the hand is released from the handle part 3 on an inclined surface or the like, the cart does not move freely.

  When releasing the brake state of FIG. 6, the brake member 16 is pulled up in FIG. When the locked portion 16c of the brake member 16 comes above the locking portion 17a of the brake locking member 17, the brake gaining member 17 is moved to the left in FIG. 6 by the biasing force of the spring 17c. The locking portion 17a of the brake locking member 17 locks the locked portion 16c of the brake member 16. In this way, the non-braking state shown in FIG. 5 is restored.

  In the shopping cart with a width adjusting mechanism according to the present invention, when one of the plate members 4 and 5 is slid, the other is slid in the opposite direction, and the plate members are connected to each other using the wires 9 and 10. However, the present invention can use various known mechanisms other than such a mechanism. For example, instead of disposing the pulleys 6 and 7 inside the concave portion 1a of the base portion 1 and applying the wires 9 and 10 as shown in FIG. 3, the gear 19 is provided inside the concave portion 1a of the base portion 1 as shown in FIG. The tooth members 4f and 5g are formed on the plate members 4 and 5 so as to mesh with the gear 19, and when one of the plate members 4 and 5 is slid, the other is slid in the opposite direction. Good.

  The shopping cart with a width adjusting mechanism according to the present invention can perform width adjustment in three stages: an initial state, a first expanded state, and a second expanded state. However, the width adjustment of the present invention is not limited to three stages. If necessary, it may be in two stages or in four or more stages. In that case, what is necessary is just to increase or reduce the number of the latching | locking parts of the latching member 12 as needed.

  The plurality of wheels 2 provided in the shopping cart with a width adjusting mechanism according to the present invention are all of the types that can rotate in the horizontal direction. However, the present invention is not limited to this, and a fixed ring that does not rotate in the horizontal direction may be used.

  The shopping cart with a width adjusting mechanism according to the present invention is disposed in the vicinity of a position where the locking mechanism 11 and the brake mechanism 15 are housed in a common case and the handle portion 3 of the base portion 1 is attached. However, the locking mechanism 11 and the brake mechanism 15 do not need to be housed in a common case, and may be provided at different locations. In addition, the locking mechanism 11 and the brake mechanism 15 may be arranged not in the vicinity of the position where the handle portion 3 of the base portion 1 is attached, but in other locations.

DESCRIPTION OF SYMBOLS 1 Base part 2 Wheel 3 Handle part 4, 5, 14 Plate member 4c, 16c Locked part 6, 7 Pulley 8 Spring 9, 10 Wire 11 Locking mechanism 12 Locking member 12a, 12b, 17a Locking part 13 Lock release button 15 Brake mechanism 16 Brake member 17 Brake lock member 18 Brake lock release button

Claims (3)

A base part having a plurality of wheels attached to the bottom surface and having the opposite surface as a mounting surface;
A handle attached to the base,
A first plate having a locked portion and slidably attached to the mounting surface;
A second plate slidably attached to the mounting surface in a direction opposite to the first plate;
Locking means having at least one locking portion for locking the locked portion;
Unlocking means for releasing the locking of the locking means, and
At least one of the first plate and the second plate is urged to slide in a direction approaching each other by a spring, and when one is slid, the other is also moved in the opposite direction by the same distance,
During normal use, the first plate and the second plate are superposed so that the size of the first plate and the second plate is substantially the same as the base part,
When used in an expanded state, the first plate and the second plate are slid in opposite directions, and the engagement of the first plate and the second plate is larger than that of the base portion. A stop portion locks the locked portion,
When the locking release means releases the locking of the locking portion with respect to the locked portion, the first plate and the second plate are sized by the urging force of the spring. A shopping cart with a width adjusting mechanism, wherein the shopping cart moves to a position that is substantially the same size as the base portion.   The third plate is attached to the base part via a hinge so as to be foldable in a direction perpendicular to the sliding direction of the first plate and the second plate. 1. A shopping cart with a width adjusting mechanism according to 1. A brake member that has a locked portion and is attached to the bottom surface of the base portion and is biased from the base portion toward the ground by a spring;
A brake locking mechanism that has a locking portion for locking the locked portion of the brake member and locks the brake member when the brake is not used;
The shopping cart with a width adjusting mechanism according to claim 1, further comprising: a brake locking release mechanism that releases locking of the brake locking mechanism when the brake is used.

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