JP2012066769A - Cart for aged people having function as carry bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a silver car having a bag for storing luggage and having a function as a carry bag.
SOLUTION: A bag 1 is a monobock type made of metal or resin, has a mounting structure in which front wheels 2a and 2b are attached to the lower front side of the bag 1 and its direction can be freely changed, and the back of the bag Two legs 6a and 6b are attached to the side so as to be inclined obliquely downward, rear wheels 3a and 3b are attached to the tips of the legs, and the legs 6a and 6b are folded and accommodated in a groove provided on the back surface. A bundle 4 that slides in the vertical direction is attached to the back side of the bag, and handles 5a and 5b are provided at the upper end of the handle.
[Selection] Figure 1

Description

  The present invention relates to a silver car having a function as a carry bag for travel.

  A silver car is a wheelbarrow for assisting walking when an elderly person walks on the road or takes a walk. There are various types of silver cars, but basically there are four wheels on the front and rear of a frame made of metal pipes, so that you can drive stably by pushing the handle. The frame cannot accommodate small parcels and is attached with a cloth bag.

  On the other hand, a carry bag is a bag for storing and carrying luggage when traveling. Therefore, the carry bag has a handle that expands and contracts, and a wheel is attached to the lower end on the back side of the bag. Therefore, it is usually possible to carry the product by rolling it with the handle. However, when going up and down the stairs, it is possible to hold the handle and lift it up with the hand. The carry bag is made of metal, resin, or cloth, and has a substantially rectangular parallelepiped shape.

The “silver car” according to Japanese Patent Application Laid-Open No. 11-43046 is easy to fold and expand and is excellent in stability in an upright state.
That is, the push rod and the upper end of the rear leg are connected to each other by an armrest lever so as to be pivotable. A pivot lever and one end of the pivot connection lever are pivotally attached to the push rod, and a seat portion is attached to the other end of the pivot lever. One end of a rear leg folding lever is pivotally attached to the end of the pivot coupling lever, and one end of a front leg folding lever is pivotally attached to the other end of the rear leg folding lever. The other end of the front leg folding lever is pivotally attached to the front leg, the upper end of the front leg is pivotally attached to the seat pipe, and the pivot position of the front leg and the pivot position of the pivot lever are further attached to the seat pipe. In between, one end of the retracting lever is pivotally attached, and the other end of the retracting lever is pivotally attached to the rear leg folding lever.

The "handcart" according to Japanese Patent Application Laid-Open No. 11-115763 is configured to be foldable in both the front-rear direction and the width direction.
A front leg, a rear leg, a push rod, a saddle that is pivotally attached to one end by a pivoting means, and a front leg that is pivotally attached to the left and right front legs. A connecting member, a rear leg connecting member having one end pivotably attached to the left and right rear legs, and a lower end portion closer to the pivoting means side than the center position of each rigid member of the front leg connecting member A traction rod having an upper end pivoted between the pivoting means and the pivoting means, and a lower end pivoted to one rear leg and an upper end to the other rear leg. An opening / closing rod that is pivotally mounted and arranged in an approximately X shape is arranged such that the upper end portion of the rear leg slides with respect to the front leg via a slider member.

“Carrying bag with hanger function” according to JP 2004-73534 A
By adding a hanger function, it can be carried together with a jacket or handbag.
From the upper part of the transport handle part, which is provided at the upper part of the main body and is fixedly or slidably connected to the main frame, and has a central part sandwiched between the parallel vertical parts of the downward U-shape. It is set as the structure containing the hanger protrusion part which can be made to protrude toward the outer side of the said parallel perpendicular | vertical part. The hanger protrusions may be housed in a gripping hand or in a cylindrical part parallel to the gripping hand with a pair of swing bars. Further, it may be a pair of rods or plates that rotate approximately 90 degrees from a posture along the parallel vertical portion of the transport handle and protrude outward.

In addition to these, various silver cars and carry bags are known. However, the basic form and structure of silver cars and carry bags are different because they have different purposes.
"Silver Car" according to Japanese Patent Application Laid-Open No. 11-43046 "Wheelbarrow" according to Japanese Patent Application Laid-Open No. 11-115763 "Carry bag with hanger function" according to Japanese Patent Application Laid-Open No. 2004-73534

  Thus, the conventional silver car is an auxiliary vehicle when an elderly person walks on the road, and the purpose of use is different from that of a travel carry bag, and its form and configuration are greatly different. The problem to be solved by the present invention is this problem, and provides a silver car with a carry bag function that has both functions so that it can be used as a carry bag or a silver car.

The silver car according to the present invention has a function as a carry bag and has the following characteristics.
(1) Although the material is not limited, generally, an aluminum or resin bag is provided. Since the bag is a monocoque type, the bag is the basic frame of the silver car. The bag has a lid that can be opened and closed, and an accommodation space is formed inside the bag so that luggage can be put into the accommodation space.
(2) Casters (wheels) are provided at the front and rear. One or two wheels are attached to the front side at the lower end on the front side of the bag, and the direction can be freely changed. The rear side has wheels on both sides, and the wheels are pivotally supported at the leg tips attached to the bag, and the legs are inclined obliquely rearward. And a groove | channel is formed in the bag back side, A leg can be folded and accommodated in this groove | channel. In the state where the leg is housed in the groove, the front wheel is positioned at the lower end of the bag, and can stand up with the bag supported by the rear wheel and the front wheel.
(3) A handle is arranged on the back side of the bag. The handle is attached to the upper end of the handle, and the handle is slid to move up and down. The handle can swing in the front-rear direction. That is, the handle is attached so as to swing in the front-rear direction, and the spring force is urged so as to always incline backward. So, if you hold the handle and push the silver car, the handle can be tilted forward by this pressing force, and when the silver car moves forward on a slope or when you take your hand off the handle, the handle It is pushed back by the spring force.
(4) A braking mechanism is incorporated in the wheel, and this braking mechanism is interlocked with the movement of the handle. That is, the brake works when the handle is located on the rear side, and conversely, the brake is released when the handle is located on the front side. However, the specific structure of the braking mechanism is not limited.
(5) A protective plate is attached to the back lower end of the bag. When used as a carry bag, the protective plate can be rubbed and dragged to the step without being lifted when going up the stairs. Therefore, the bag body is not directly rubbed even if it contacts the step edge of the stairs. Therefore, the protective plate is generally made of resin with excellent wear resistance, and a material that is easily slippery is suitable, and it has a mounting structure that can be replaced when scratches caused by rubbing on the step become noticeable. .

  As described above, the silver car of the present invention generally has a monocoque bag made of aluminum or resin as a basic frame, the front wheel is attached to the lower front side of the bag, and the rear wheel is attached to the leg tip extending obliquely from the back side of the bag. In addition, by having a handle that slides in the vertical direction, stable traveling as an auxiliary vehicle is possible. Also, the handle swings back and forth, and at the same time when the hand is released, the handle is pushed back to operate the brake and the silver car can be stopped immediately, so the safety is very high. Therefore, the silver car does not start running alone when it reaches the hill, and the old man does not fall over by being pulled by the silver car.

  The rear wheel is attached to the tip of a leg extending obliquely from the back side of the bag. Since the leg fits into a groove formed on the back side of the bag, it can be used as a carry bag. Therefore, the rear wheel can be rolled and carried by extending the handle. On the other hand, since a protective plate is attached to the lower back portion of the bag, when going up the stairs, it is possible to drag the step edge without rubbing it by hand.

External view of the silver car. Silver car when the chair is pulled out. Chair installation structure. A silver car with the bag lid open and the chair pulled out. The front side external view when a handle falls by sliding a handle. The rear side external view when a handle falls by sliding a handle. The back side perspective view which pulled out the chair and reduced the handle. The whole figure which shows the sliding mechanism of a handle. Handle vertical slide mechanism. Unlocking operation unit attached to the handle at the upper end of the handle. A braking mechanism attached to the rear wheel. Relationship between the wire that operates the braking mechanism and the outer case. A leg with a rear wheel attached to the lower end.

  FIG. 1 is an embodiment showing one embodiment of a silver car having the function of a carry bag according to the present invention. In the figure, 1 is a bag, 2a and 2b are front wheels, 3a and 3b are rear wheels, and 4 is a handle. The silver car shown in the figure shows a state in which the steering wheel 4 can be lifted and the vehicle can run, and the steering wheel 4 can be slid up and down. Is extended to both sides. The handles 5a and 5b can be expanded and contracted so that their lengths can be adjusted.

  The front wheels 2a and 2b are attached to lower ends on both sides of the front face of the bag 1, and are supported so that the direction thereof can be changed. The rear wheels 3a and 3b are attached not to the bag 1 but to the front ends (lower ends) of the legs 6a and 6b that are attached to the back side of the bag 1 and extend obliquely rearward. Therefore, the distance between the front wheels 2a and 2b and the rear wheels 3a and 3b is increased, and a stable running as a silver car can be performed.

  A conventional general silver car has a frame made of metal pipe, a front wheel and a rear wheel are attached to the frame, and a bag or a box for putting small luggage is attached to the frame. On the other hand, in the present invention, without using a frame in which metal pipes are assembled, a metal or resin monocoque bag itself functions as a frame, and the front wheels 2a, 2b and rear wheels 3a, 3b are attached to the bag. It is installed. However, if the front wheels 2a and 2b and the rear wheels 3a and 3b are attached to the front and rear lower ends of the bag 1, the distance between the front and rear wheels 2 and 3 is small and unstable, so the rear wheels 3a and 3b It is attached to the front ends of legs 6a and 6b extending obliquely.

  FIG. 2 shows a case where the chair 7 attached to the back of the bag is pulled out. A chair 7 is attached to the silver car of the present invention, and the chair 7 is stored on the back of the bag 1. Then, it can be pulled out as shown in FIG. 2 when necessary, and can sit down and rest temporarily using this chair 7. The silver car of the present invention has legs 6a and 6b extending obliquely rearward and the rear wheels 3a and 3b are attached to the front ends of the legs, and at the same time, the chair 7 is supported by the legs 6a and 6b. I can do it.

  FIG. 3 shows the mounting structure of the chair 7 attached to the leg 6a. Of course, it is attached to the other leg 6b with the same structure, but the shaft 10 protrudes horizontally inside the leg 6a, and a link 11 is connected to the shaft 10. Two ribs 12 a and 12 b are provided on the lower surface on one side of the chair 7, and the other end of the link 11 is connected to the rib 12 a via a shaft 13.

  Further, a guide groove 14 is provided in the longitudinal direction inside the leg 6a, and a shaft 15 attached to the rib 12b is loosely fitted in the guide groove 14. Accordingly, when a load is applied to the chair 7 from above, the shaft 15 provided on the rib 12b is positioned at the lower end of the guide groove 14, so that the link 11 does not rotate. Therefore, it is possible to sit on the chair 7 and take a rest. When the chair 7 is not required, if the shaft 15 of the rib 12b is slid upward along the guide groove 14, the chair 7 is parallel to the leg 6a, and if the leg 6a is folded, the chair 7 is also It is housed on the back side of the bag 1 together with the legs 6a. The shaft 16 in the figure is an attachment shaft for the legs 6a.

  FIG. 4 shows a state in which the lid 38 of the bag 1 is opened. A lid 38 that can be opened and closed is attached to the bag 1 and can be opened by being inclined toward the surface side as shown in FIG. If the lid 38 is opened, the bag 1 can be opened to store luggage in the internal space 9 and can function as a carry bag. Of course, when used as a carry bag, the chair 7 can be folded, the legs 6a and 6b can be folded and stored, the front wheels 2a and 2b can be lifted, and the rear wheels 3a and 3b can be pulled with the road surface rolling.

  In FIG. 5, the handle 4 is reduced and the handles 5a and 5b are positioned at the upper end of the bag 1, and both legs 6a and 6b are folded and stored in a groove formed on the back surface of the bag. Therefore, the figure shows the case where it is used as a carry bag. The carry bag can be lifted by holding the handle. 6 shows the back side of FIG. 5, both legs 6 a and 6 b are accommodated in the grooves, and the rear wheels 3 a and 3 b are located at the lower end on the back side of the bag 1.

  Further, the grips 5a and 5b are provided with an auxiliary grip portion 8. When the bag 1 is lifted in the state shown in FIGS. 5 and 6, the auxiliary grip portion 8 can be used. The auxiliary grip 8 is located between the two handles 5a and 5b and on the front side of the bag 1. Both the handles 5a and 5b are provided on the back side of the bag 1 and in substantially the same plane as the handle 4 that slides up and down. If the bag 1 is lifted at the positions of the handles 5a and 5b, the bag 1 Since the center of gravity of the bag is on the front side, the lifted bag 1 is tilted and the lower end of the back is in contact with the body. Therefore, it becomes difficult to walk with the bag 1.

  The auxiliary grip 8 positioned on the front side is positioned in a plane passing through the center of gravity of the bag 1, and the bag 1 lifted by gripping the auxiliary grip 8 does not tilt and hits the body. Absent. Therefore, it is easy to hold the bag 1 and to walk easily. When used as a carry bag, generally, the rear wheels 3a and 3b can roll on the road surface. However, when going up and down the stairs, the bag 1 must be lifted, and the bag 1 is stabilized without tilting by having the auxiliary grip portion 8.

  FIG. 7 shows the back side of the bag 1, but a handle 4 is attached to the back side of the bag 1. FIG. 8 shows a specific example of the vertical slide mechanism of the handle 4, and the handle 4 shown in FIG. 8 can slide up and down steplessly. The handle 4 is made of a pipe having a rectangular cross section. The handle 4 is fitted and attached to the outer case 17 and can slide up and down along the outer case 17.

  The lower end of the outer case 17 is pivotally supported and can swing back and forth. A mandrel 18 is fixed to the lower end of the outer case 17, and the mandrel 18 extends upward. A chain bent in a zigzag manner is disposed inside the handle 4 to lock the mandrel 18. The zigzag chain is attached to the vertical position at a predetermined interval and is locked to a mandrel 18 fixed to the outer case 17 so that the handle 4 is prevented from sliding in the vertical direction. That is, the mandrel 18 is inserted through the through hole formed in the zigzag chain.

  FIG. 9 is a specific example showing a locking mechanism using a zigzag chain. In FIG. 9, 19 denotes an upper zigzag chain, 20 denotes a lower zigzag chain, and the upper end of the upper zigzag chain 19 is connected to a fixed end 21. The lower zigzag chain 20 is similarly fixed to the handle side by forming a fixed end 22 at the lower end. The zigzag chains 19 and 20 are formed by connecting a plurality of links with pins and bending them into a sawtooth shape to form a zigzag shape. A bent hole is formed by bending the zigzag shape into this hole. A mandrel 18 is inserted.

  Therefore, when the handle 4 is slid upward and extended, each pin of the upper zigzag chain 19 having the fixed end 21 at the upper end engages with the mandrel 18 and locks. Further, when the handle 4 is slid downward to be contracted, each pin of the lower zigzag chain 20 having the fixed end 22 at the lower end engages with the mandrel 18 and locks. Thus, the vertical slide of the handle 4 is locked by the upper zigzag chain 19 and the lower zigzag chain 20.

Therefore, in order to slide the handle 4 up and down, the upper zigzag chain 19 and the lower zigzag chain 20 must be unlocked. 23 of the same figure has shown the lock release plate. The upper end of the lock release plate 23 is fixed to the block 24, and the block 24 is attached to the lower end of the connecting pipe 25. The upper end of the connection pipe 25 extends to the upper end of the handle 4 and is connected to the lock release operation unit 26.
By the way, the upper zigzag chain 19 and the lower zigzag chain 20 act so that the spring force is urged and stretched. That is, each pin is in a state where it can always contact the mandrel 18. In particular, the free end 28 of the lower zigzag chain 20 is lowered by its own weight so that the pin is not separated from the mandrel 18 except for the unlocking operation.

  FIG. 10 shows a handle 5 attached to the upper end of the handle 4, and a lock release operation part 26 is attached to the handle 5. The unlocking operation part 26 in the figure is in a lifted state, and if the unlocking operation part 26 is lifted, the connecting pipe 25 rises and the unlocking plate 23 also rises. As a result, the unlocking plate 23 lifts the free end 27 of the upper zigzag chain 19, the pins of the upper zigzag chain 19 are disengaged from the mandrel 18, and the handle 4 can be slid upward. . That is, the handle 4 can be extended.

  On the contrary, if the unlocking operation part 26 is pushed down, the connecting pipe 25 is lowered, and the free end 28 of the lower zigzag chain 20 is pushed down by the lowering of the unlocking plate 23 connected to the lower end of the connecting pipe 25. It is done. As a result, each pin of the lower zigzag chain 20 is disengaged from the mandrel 18 and the handle 4 can be slid downward. That is, the handle 4 can be shortened. Therefore, if the unlocking operation unit 26 is disposed at an intermediate position, the handle 4 cannot be raised or lowered.

  As described above, the handle 4 is configured to slide up and down to expand and contract. However, the stepless expansion and contraction mechanism using the upper zigzag chain 19 and the lower zigzag chain 20 described in the embodiment is as follows. It is just one specific example. A stepped expansion and contraction mechanism using a ratchet can also be adopted. The height of the handle 5 provided at the upper end of the handle can be adjusted by the vertical slide of the handle 4 so as to match the body shape of the elderly.

  The handle 4 of the silver car can swing in the front-rear direction in addition to the vertical slide, and the brake is operated in conjunction with the front-rear swing. That is, when pushing as a silver car, the two handles 5a and 5b are grasped and pressed, but the handle 4 is inclined forward by the pressing force. The braking mechanism attached to the rear wheels 3a and 3b is operated in conjunction with the inclination of the handle 4 to release the brake. That is, the rear wheels 3a and 3b can freely rotate without resistance.

  However, if the hands are released from the handles 5a and 5b, or if the silver car approaches the slope, the handle 4 tilts backward (rear side). Since the spring force is always urged to the handle 4, the handle 4 is inclined so as to be pushed back when the pressing force to the handles 5 a and 5 b disappears. Accordingly, the braking mechanism is actuated in conjunction with the rearward tilt of the handle 4 to apply the brake, the rotation of the rear wheels 3a and 3b is prevented, and the silver car stops.

  FIG. 11 shows a specific example of a braking mechanism for the rear wheels 3a and 3b. A concentric rib 30 is provided around the axle 29, and a zigzag chain 31 is attached to the rib 30. In this zigzag chain 31, a plurality of links are connected through pins, and rollers 32a, 32a,..., 32b, 32b. . The rib 30 is sandwiched between the plurality of rollers 32a, 32a,..., 32b, 32b... And is connected and fixed to a connecting link 33 fixed to the shaft side on one pin.

  Here, the diameter of the roller 32b located on the inner diameter side of the rib 30 is small, and the diameter of the roller 32a located on the outer diameter side is large. When the silver car is pushed, the rear wheel 3 rotates counterclockwise. However, the rollers 32a, 32a..., 32b, 32b... Of the zigzag chain 31 are engaged with the ribs 30, so that the rotation of the ribs 30, that is, the rotation of the rear wheels 3 is prevented. By the way, if the release block 34 attached to the axle 29 rotates clockwise and the tip rises and hits the tip of the zigzag chain 31, the zigzag chain 31 is compressed and the rollers 32a, 32a,. 32b are disengaged from the rib 30.

  A torsion spring (not shown) is attached to the axle 29 of the release block 34, and a spring force is urged so that the tip of the release block 34 does not hit the tip (free end) of the zigzag chain 31. The release block 34 to which the spring force is urged is connected to the outer case 17 to which the handle 4 is attached via a wire 35. By the way, the rollers 32a, 32a... 32b, 32b... Of the zigzag chain 31 are always engaged with the ribs 30, that is, except when the release block 34 hits the tip and compresses. Are energized by a spring force in the direction in which the zigzag chain 31 is extended. However, the specific means is not limited. For example, the tip may be pulled with a weak coil spring.

  FIG. 12 shows the upper end of the outer case 17 to which the handle 4 is fitted and attached, and a wire 35 is connected to the metal fitting 36 attached to the upper end of the outer case. The wire 35 is connected to the release block 34. Therefore, if the handle 4 is tilted forward, that is, if the handle 5a, 5b of the silver car is pushed and pushed, the handle 4 tilts forward, and at the same time, the outer case 17 tilts to pull the wire 35. Become.

  The wire 35 passes through the inside of the leg 6, is led to the rear wheel 3 attached to the lower end, and is connected to the release block 34 attached to the rear wheel 3. The release block 34 rotates in the clockwise direction, the tip of the release block 34 hits the free end of the zigzag chain 31, and the lock is released. As a result, the rear wheel 3 rotates counterclockwise and the silver car can move forward. FIG. 13 shows a case where the rear wheel 3 provided with a braking mechanism is attached to the tip of the leg.

  Then, if the hands are released from the handle handles 5 a and 5 b of the silver car, the release block 34 is rotated counterclockwise by the torsion spring attached to the axle 29, and the tip is separated from the free end of the zigzag chain 31. As a result, the rollers 32a, 32a..., 32b, 32b... Of the zigzag chain 31 are engaged with the rib 30 and the rotation of the rear wheel 3 can be locked. That is, the wire 35 is pulled back by the torsion spring that rotates the release block 34 counterclockwise, and the handle 4 tilts backward.

  The rear wheel 3 shown in the figure is in a state in which the front cap is removed. The front cap is also provided with a concentric rib 30 having the same diameter. By attaching the front cap, the rib 30 also has each zigzag chain 31. The rollers 32a, 32a,..., 32b, 32b. The front cap is concentrically fitted on the axle 29, and pins 37, 37... Are fitted in pin holes provided on the outer periphery so as not to rotate. However, as long as the front cap does not come off concentrically, it may rotate somewhat independently.

  By the way, the braking mechanism of the rear wheel 3 is not limited to the above embodiment. A drum-type brake or a disc brake often used as a vehicle brake device can also be used. In this case as well, the brake can be configured to operate in conjunction with the swinging of the handle 4. In the case of a drum type brake, it can be configured such that a spring force is urged so that the brake is always operated, and the drum brake is released by tilting the handle 4 forward. Of course, the disc brake can function in the same manner.

1 Bag 2 Front Wheel 3 Rear Wheel 4 Handle 5 Handle 6 Leg 7 Chair 8 Auxiliary Grip 9 Internal Space
10 axes
11 links
12 ribs
13 axes
14 Guide groove
15 axes
16 axes
17 Outer case
18 mandrel
19 Upper zigzag chain
20 Lower zigzag chain
21 Fixed end
22 Fixed end
23 Unlock plate
24 blocks
25 Connecting pipe
26 Unlock operation section
27 Free end
28 Free end
29 axles
30 ribs
31 Zigzag chain
32 Laura
33 Link
34 Release block
35 wire
36 brackets
37 pin
38 lid

Claims (4)

In a silver car having a bag for storing luggage and having a function as a carry bag, the bag is a monocoque type made of metal or resin, and a front wheel is attached to the lower end on the front side of the bag and its direction is set. The mounting structure can be changed freely, and two legs are attached to the back side of the bag, tilted downward, and the rear wheel is attached to the tip of the leg. A silver car having a function as a carry bag, characterized in that a bundle that slides in the vertical direction is attached to the back side of the bag and a handle is provided at the upper end of the handle. The handle is swingable in the front-rear direction and energizes a spring force that tilts toward the back side. When the handle is pushed forward, the brake of the rear wheel is released, and when pushed backward, the brake works. The silver car provided with the function as the carry bag of Claim 1 made. The silver car provided with the function as a carry bag of Claim 1 or Claim 2 which attached the chair which can be folded on the back side of the said bag. The silver car provided with the function as a carry bag of Claim 1, Claim 2, or Claim 3 which attached the protection board to the bag back lower side.

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