JP2015047241A - Shopping cart - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shopping cart for allowing the height adjustment of a handle part to be easily performed by a single hand.SOLUTION: Over the inside of a handle part and the inside of a slide part, there is disposed an operation link member, and an end member is fitted on the lower end of the slide part. A pressure spring is interposed between the upper parts of the end member. A holder having at least one side face opened in the slide part and having holes inclined downward to the front face side and the back face side is placed on the pressure spring. A lock pin having a protrusion inserted into said hole and a projection on the open side face of the holder is fitted in the holder. The slide part is formed with a hole, into which the projection of the lock pin can be inserted. The main frame is formed with a plurality of holes, into which the projection of the lock pin can be loosely inserted.

Description

  The present invention relates to a one-hand operated shopping cart that can be operated with one hand by a user standing on either the left or right side of a pedestal having a substantially rectangular shape in plan view with respect to the traveling direction. The present invention relates to a shopping cart in which the height of a frame can be easily adjusted with one hand.

  Conventionally, a wheelbarrow called a silver car is known as an instrument for assisting walking. Silver cars have a structure that allows them to advance and retreat by taking the weight of the user, and to sit down, and are used by elderly people whose legs and legs have fallen.

  However, the silver car has a tendency to increase its overall length and width in order to ensure stability, and has a structure that prioritizes function over decoration. Therefore, the silver car has a strong impression that it is an article for elderly people for many users, and many people feel resistance when using it.

  Therefore, in order to reduce such resistance, the bag is richly decorated, and the downsizing of the shape reduces the impression that it is a product for the elderly. It is used by all ages.

  Further, among the shopping carts, the lateral push type can be operated with one hand while leaving the weight on the handle portion, and is therefore used as a walking stick substitute to assist walking.

  Patent Literature 1 discloses a handcart that can adjust the height of the handle portion by providing screw holes in the handle frame and the main frame.

  Patent Document 2 discloses a carry cart that can adjust the height of the handle frame in a stepless manner.

JP 2012-56537 A Registered Utility Model Publication No. 3182700

  Since the main user is an elderly person, the side push type shopping cart used as a walking aid as a substitute for the above-mentioned cane requires simple operability.

  Therefore, an object of the present invention is to provide a shopping cart that can be easily adjusted with one hand in the height of the handle.

  The configuration of the present invention that achieves the above object is as follows.

(1) The invention according to claim 1 is provided with a pair of left and right main frames extending substantially in the vertical direction, and a handle portion that is connected to the upper end of the main frame and extends substantially upward, and is manually pushed by the user at the upper end. In a shopping cart comprising a handle frame, a pedestal portion that supports the main frame at a base end portion of the main frame, and a wheel portion provided on a lower surface of the pedestal portion, the handle frame is inserted into the main frame. A slide part that slides up and down is provided, an operation link member is provided across the handle part and the slide part, a button part that presses the operation link member downward is provided on the handle part, and an end member is fitted to the lower end of the slide part, A box-shaped holder that is provided in the slide portion in contact with the lower end of the operating link member with a pressing spring interposed at the top of the end member, On the other hand, the side surface is opened, and on the front side and the back side, a holder having a hole that is inclined downward toward the opened side surface side is placed on the pressing spring,
On the front side and the back side, a lock pin that has a convex portion that is loosely inserted into the hole portion and that has a protruding portion on the open side surface of the holder is inserted into the holder, and the lock portion has the lock A hole in which the protruding portion of the pin can be loosely inserted is provided at a position where the protruding portion protrudes when the operating link member does not press the holder, and the protruding portion of the lock pin can be loosely inserted into the main frame. A plurality of holes were provided.

  (2) The invention according to claim 2 is the shopping cart according to claim 1, wherein the holder is provided with a wall portion inclined in the same direction as the hole portion, and the wall portion is loosely inserted into the lock pin. A possible groove was provided.

  It will be outlined with reference to the drawings how the present invention configured as described above works to solve the problems.

  FIG. 2 is a partially broken front view of the shopping cart 10 according to the present invention, showing a state in which the vertical movement of the handle frame in the height direction is fixed by a lock pin 60 or the like. Moreover, FIG. 3A is a principal part fracture | rupture expansion front view of the site | part which mainly performs the effect | action for maintaining this fixed state, FIG. 3B is a principal part fracture | rupture expansion front view which shows the scene where the fixation state was cancelled | released. FIG.

  As shown in FIG. 3A, the holder 50 is pressed upward by the pressing spring 41 in the fixed state. At this time, since the hole portion 52 provided in the holder 50 is inclined downward toward the open side surface 51 side, the lock pin 60 in which the convex portion 62 is loosely inserted into the hole portion 52 is illustrated in the drawing. It will be pushed down in the lower right direction.

  Accordingly, the protruding portion 61 of the lock pin 60 protrudes to the outside from the opening portion 51 of the holder 50 and the hole portion 26 provided in the slide portion 25, and further from the hole portion 11 a provided in the main frame 11. . Thereby, the movement of the slide part 25 in the vertical direction is prevented. In other words, the height of the handle portion 21 is fixed.

  On the other hand, FIG. 3B shows a state when the height of the handle portion 21 is changed. When the button 22 provided on the handle 21 shown in FIG. 2 is pressed by the operating link member 30, the operating link member 30 is pressed downward, and the holder 50 is pressed downward as shown in FIG. 3B. At this time, since the hole portion 52 provided in the holder 50 is inclined downward toward the open side surface 51 side, the lock pin 60 in which the convex portion 62 is loosely inserted into the hole portion 52 is illustrated in the drawing. It will be pushed up in the upper left direction.

  Accordingly, in a state where the height of the handle portion 21 is fixed, the opening side 51 of the holder 50 and the hole portion 26 provided in the slide portion 25, and further, the hole portion 11 a provided in the main frame 11 are exposed to the outside. The protruding portion 61 of the protruding lock pin 60 moves into the slide portion 25. Thereby, the movement of the slide part 25 in the vertical direction becomes free, that is, the height of the handle part 21 becomes variable.

  In addition, when the user brings the handle portion 21 to a desired height and releases the pressed state of the button portion 22, the pressing spring 41 is interposed under the holder 50, so that the holder 50 is pushed upward. Accordingly, the lock pin 60 is pushed down in the lower right direction in FIG. 3, and the protruding portion 61 is urged in the direction protruding outward. In this state, when the positions of the protrusion 61 and the hole 11a provided in the main frame 11 coincide, the protrusion 61 protrudes to the outside of the main frame 11, that is, the position of the handle frame 20 in the height direction is fixed. is there.

  As described above, in the shopping cart according to the present invention, the height of the handle portion 21 can be adjusted by an operation that can be easily performed with one hand by pressing the button portion 22 and moving the handle frame 20 up and down. .

  According to a second aspect of the present invention, a wall portion is provided in the holder so that the front surface of the holder is inclined in the same direction as the hole portion provided on the rear surface side, and the wall portion can be loosely inserted into the lock pin. A simple groove is provided. By loosely inserting the wall portion into the groove portion, the wall portion serves as a guide, and the movement of the lock pin is performed more reliably.

Perspective view of the present invention Partially broken front view of the present invention Enlarged view of the main part A Front view of main frame B AA cross section A Front view of slide part B AA cross-sectional view Explanatory sectional view showing the relationship between the main frame and slide part Perspective view of actuating link member Six views of the holder A A-A line sectional view in FIG. 8 B BB line sectional view C Holder perspective view Five side view of lock pin Cross section and perspective view of lock pin Explanatory drawing showing the end member

  Hereinafter, an embodiment of a preferred invention will be outlined with reference to the drawings. The embodiment of the present invention is not limited to the following embodiment, and can take various forms as long as they belong to the technical scope of the present invention.

  The shopping cart which concerns on this invention is demonstrated below based on drawing which shows this Embodiment. As shown in FIG. 1, the shopping cart 10 includes a pedestal portion 12, a wheel portion 13 including a pair of front wheels and a pair of rear wheels, a pair of main frames 11 erected on the pedestal portion 12, and a slide The handle frame 20 including the portion 25 and the handle portion 21 is a main component.

  As shown in FIG. 1, the pedestal portion 12 is a plate member having a substantially rectangular shape in plan view formed of a synthetic resin, and a placement surface 12 a on which an article storage bag (not shown) is placed on the upper surface side. A hole 12b for weight reduction and a main frame holding part 12c for holding the main frame are provided.

 The placement surface 12a is formed flat so that the article storage bag can be placed stably. A plurality of holes 12b are formed on the mounting surface 12a for weight reduction. The main frame holding portion 12c rises in a cylindrical shape from the placement surface 12a, and is formed at a substantially central portion of the four sides of the placement surface 12a on the side where the user stands and on the opposite side.

  A mounting structure for the front wheel unit 13 a is formed on the front side with respect to the traveling direction of the shopping cart 10, and a mounting structure for the rear wheel unit 13 b is formed on the rear side on the lower surface of the pedestal portion 12.

  The main frame 11 fitted into the main frame holding part 12c is a pipe body having a hollow cross section as shown in FIG. 4B. On the side surface of the main frame 11, a plurality of holes 11 a having a shape that allows the protrusion 61 of the lock pin 60 to protrude are provided.

  The handle frame 20 includes a handle portion 21 and a slide portion 25.

  The handle portion 21 is a resin member that is bent in a substantially U-shape, and a hole into which the slide portion 25 is fitted is formed at both ends of the U-shape. In addition, an elliptical hole 21a is provided at the center of the handle part 21, and a button part 22 for operating the handle frame 20 in the height direction is loosely inserted into the hole 21a. The button portion 22 has an elliptical shape in plan view, has a concave portion 22a on the bottom surface side, and a convex portion 31a described later is fitted into the concave portion 22a.

  The slide part 25 is a pipe body having a hollow cross section as shown in FIG. On the side surface of the slide portion 25, a hole portion 26 having a shape capable of projecting the projecting portion 61 of the lock pin 60 is provided.

  As shown in FIG. 7, the main frame 11 and the slide part 25 are formed in a shape in which the slide part 25 can be loosely inserted into the main frame 11. Since it is formed in this way, the slide part 25 is movable in the height direction.

  The handle frame 20 incorporates an operation link member 30 for fixing / releasing the slide of the slide portion 25 in conjunction with the button portion 22.

  As shown in FIG. 2 and FIG. 7, the operation link member 30 has a plate-like button part interlocking member 31 having a convex part 31 a fitted into the concave part 22 a of the button part 22, and a plate shape fixed to the button part interlocking member 31. And a plate-shaped holder pressing member 33 having a bent portion 33a which is fixed to both ends and is bent in the horizontal direction at both ends.

  As shown in FIG. 7, the button portion interlocking member 31 is composed of a centrally bent convex portion 31a and flat plate portions 31b on both sides thereof. The flat plate portion 31b is provided with holes 31c. Is fitted and fixed to the connecting member 32.

  The connecting member 32 is a flat plate material, and a hole 32a is provided at a position corresponding to the hole 31c and is attached. Also, a hole 32b is provided at one end, and a hook is fitted into the hole 32b to be fixed to the holder pressing member 33. Further, the connection member 32 is provided with two holes 32c, and is fitted into a columnar portion 23 provided in the handle portion 21, as shown in FIG. A pressing spring 24 is interposed in the lower part of the connecting member 32 so as to wind the columnar part 23. The pressing spring 23 has a function of restoring the original position when releasing the pressed state of the button portion 22.

  The holder pressing member 33 is a plate-like body having bent portions 33a bent in the horizontal direction at both ends, and the bent portion 33a provided in the upper portion is provided with a hole 33b at a position corresponding to the above 32b. That ’s what I ’m wearing.

  8A is a front view of the holder 50, FIG. 8B is a rear view of the holder 50, FIG. 8C is a left side view of the holder 50, FIG. 8D is a right side view of the holder 50, and FIG. 8F is a bottom view of the holder 50, FIG. 9A is a sectional view taken along line AA in FIG. 8, FIG. 9B is a sectional view taken along line BB, and FIG. 9C is a holder. FIG.

  The holder 50 is a box-like body having holes 52 inclined obliquely downward on the front side and the back side, and both side surfaces are open. Inside, a wall portion 53 that is inclined in parallel with the hole portion 52 is provided from the left side surface toward the right side surface. The wall 53 is for guiding the movement of the lock pin 60. In addition, an opening groove portion 54 for allowing the convex piece 65 provided on the top portion of the lock pin 60 to protrude and retract from the holder 50 is provided on the plane.

  10A is a front view of the lock pin 60, FIG. 10B is a left side view of the lock pin 60, FIG. 10C is a right side view of the lock pin 60, and FIG. 10D is a plan view of the lock pin 60. 10E is a bottom view of the lock pin 60, FIG. 11A is a cross-sectional view taken along line AA in FIG. 10, FIG. 11B is a cross-sectional view taken along line BB, and FIG. 11C is a perspective view of the lock pin 60. is there. The rear view appears symmetrically with the front view.

  The lock pin 60 is provided with a columnar protrusion 62 on each of the front side and the back side of a substantially rectangular parallelepiped body 63 and a columnar protrusion 61 on the right side. In addition, a groove portion 64 that is inclined downward from the left side surface of the main body 63 toward the right side surface is provided. The wall portion 53 of the holder 50 is loosely inserted into the groove portion 64 to guide the movement of the lock pin 60.

  Furthermore, a convex piece 65 is provided on the top of the lock pin 60. The convex piece 65 is provided to prevent the lock pin 60 from completely entering the inside of the slide member 25. That is, when the lock pin 60 is completely moved upward in the holder 50, that is, when the convex portion 62 is moved to the upper left end portion of the hole 52 in FIG. 3B, the protruding portion 61 is completely moved into the slide portion 25. It will get in. However, in such a state, there may occur a case where the movement of the protruding portion 61 from the hole 26 and the hole portion 11a to the outside is not performed smoothly. In order to avoid such a situation, it is necessary that the protrusion 61 is located at the position shown in FIG.

  Therefore, a convex piece 65 is provided on the top of the lock pin 60, and the convex piece 65 is restrained from coming out of the opening groove portion 54 of the holder 50 by the bent portion 33a of the holder pressing member 33, as shown in FIG. 3B. Intrusion into the slide member 25 beyond the position is suppressed.

  In this respect, if the length of the hole 52 is shortened in the upper left direction in FIG. 3, the movement of the lock pin 60 into the holder 50 can be suppressed, but such means cannot be adopted. That is, in order to insert the holder 50 equipped with the lock pin 60 into the slide member 25, it is necessary to once completely insert the lock pin 60 into the holder 50. This is because the protrusion 61 cannot be inserted into the slide member 25 if it is in a position where it abuts against the wall surface of the hole 26. Therefore, in order to avoid such a situation, means for providing the convex piece 65 as described above is employed.

  12A is a front view of the end member 40, FIG. 12B is a left side view of the end member 40, FIG. 12C is a plan view of the end member 40, and FIG. 12D is a perspective view of the end member 40. The end member 40 is fitted into the lower end opening of the slide portion 25.

  The end member 40 is provided with a columnar body 42 having a recess 43 on the lid portion 44, and the recess 43 is provided with a columnar protrusion 45. The protrusion 45 is loosely inserted into the pressing spring 41.

  The positional relationship among the end member 40, the holder 50, and the operation link member 30 is such that the end member 40 is fitted into the lower end edge of the slide portion 25, and the holder 50 is placed on the pressing spring 41 provided on the end member 40. A lock pin 60 is provided in the holder 50, and there is a holder pressing member 33 constituting the operation link member 30 in a positional relationship in contact with the upper surface of the holder 50.

10. Shopping cart 11. Main frame 11a ... Hole 12 ... Base 13 ... Wheel part 20 ... Handle frame 21 ... Handle part 22 ... Button part 23 ... Columnar part 24 ... Pressing spring 25..Slide part 26..Hole part 30..Operating link member 31..Button part interlocking member 32..Connecting member 33..Holder pressing member 40..End member 41..Pressing spring 42..Columnar 43 ..Recess 44.
45 ·· Projection 50 ·· Holder 51 · · Open side 52 · · Hole 53 · · Wall 60 · · Lock pin 61 · · Projection 62 · · Projection 63 · · Body
64 ・ ・ Groove 65 ・ ・ Projection

Claims (2)

A pair of left and right main frames extending substantially vertically;
A handle frame that is connected to the upper end of the main frame and extends substantially upward, and is provided with a handle portion that is manually pushed by the user at the upper end;
A pedestal for supporting the main frame at the base end of the main frame;
A shopping cart provided with a wheel portion provided on a lower surface of the pedestal portion,
In the handle frame,
A slide portion (25) that slides up and down through the main frame (11) is provided;
An operating link member (30) is provided across the handle portion (21) and the slide portion (25),
A button part (22) for pressing the operating link member (30) downward is provided on the handle part (21),
The end member (40) is fitted to the lower end of the slide part (25), and a pressing spring (41) is interposed on the upper end member (40),
A box-shaped holder (50) mounted in the slide portion (25) in contact with the lower end of the operating link member (30), at least one side surface being opened and opened to the front side and the rear side. A holder (50) having a hole (52) that inclines and descends toward the side surface is placed on the pressing spring (41),
On the front side and the back side, a lock pin (60) having a convex part (62) loosely inserted into the hole (52) and provided with a protruding part (61) on the open side face of the holder (50) is provided. In the holder (50)
In the state where the slide link (25) does not press the hole (26) into which the protrusion (61) of the lock pin (60) can be loosely inserted, and the operating link member (30) does not press the holder (50). , Provided at a position where the protruding portion (61) protrudes,
A shopping cart in which a plurality of holes (11a) into which the protrusions (61) of the lock pins (60) can be loosely inserted are provided in the main frame (11).   A wall portion (53) inclined in the same direction as the hole portion (52) is provided in the holder (50), and a groove portion (64) into which the wall portion (53) can be loosely inserted is provided in the lock pin (60). The shopping cart according to claim 1 provided.

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