JP4499255B2 - Carry cart - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hand-carrying carry cart for carrying luggage such as a travel bag.
[0002]
[Prior art and its problems]
Since the travel bag is heavy, it is generally carried by a hand-carrying carry cart, and the conventional cart has a pair of left and right wheels 32, 32 at the lower end of a back frame 31 having a cargo bed 30 at the bottom as shown in FIG. Of structure.
[0003]
In the conventional cart, when the bag 33 is placed on the loading platform 30, the center of gravity G of the bag is located behind the vertical plane VP that rises vertically from the center of the cart wheel 32, so that the upper handle portion 34 of the back frame 31 faces downward. Rotational moment F is applied.
[0004]
Therefore, the user must pull the cart while constantly pulling up the handle portion 34, which is unstable and tires the hand.
[0005]
[Object of the present invention]
According to the present invention, it is possible to provide a cart that does not require the user to pull up the handle and therefore is less tired and can carry luggage such as bags stably.
[0006]
In order to achieve the above-mentioned object, the carry cart according to the present invention has the left and right upper hooks of the upper frame in which a handle is provided between the upper parts of the left and right upper hooks made of pipes on the left and right bases made of pipes. A back frame that is slidably fitted into the base, a pair of left and right wheels at the lower end of the back frame, a loading platform on the lower front side of the back frame, and along the longitudinal direction of the base The slide rod has a lock mechanism that can be fixed at an arbitrary position of the base rod , and the upper end of the auxiliary frame having a caster at the bottom is attached to be rotatable around a horizontal axis in the left-right direction. , between the lower portion of the lower and the back frame of the auxiliary frame, the ends of the upper and lower, each connected by a lateral direction of the link arm that can be rotated around a horizontal axis, b of the slide rod By releasing the click mechanism, wherein said casters and push down along the slide扞to Moto杆 is lowered, also the a pulling along the slide rod in Moto杆 casters and so that construction is raised, The load of the load placed on the carrier during use of the cart is supported by the wheels and casters by the mechanism of the auxiliary frame and the link arm, and the auxiliary frame moves the slide rod up and down to move the caster and the back frame. It is characterized in that the inclination angle of the spine frame can be arbitrarily set by adjusting the distance of .
[0007]
Further, the lock mechanism of the slide rod is provided with a grip body for unlocking, and is normally locked so that the slide rod does not move. However, when the grip body is grasped, the lock is released and the slide rod is moved up and down. It is configured to be movable and to be locked by releasing the grip body.
[0008]
【Example】
Embodiments of the carry cart according to the present invention will be described below in detail based on specific examples shown in the accompanying drawings.
1 and 2, reference numeral 1 is a loading platform constituted by a rectangular frame body, 2 is a leg constructed by a concave casing, and the bases of the left and right cages 2a and 2a are horizontally aligned with the left and right cages 1a and 1a of the loading platform. It is attached so that it can rotate around.
[0009]
Reference numeral 3 denotes a back frame, which includes a connecting rod 3b between left and right base rods 3a and 3a made of pipes, and a left and right upper frame 5 in which a handle portion 4 is provided between upper portions of left and right upper rods 5a and 5a. The upper hooks 5a and 5a are slidably fitted into the bases 3a and 3a.
[0010]
The left and right upper rods 5a and 5a are prevented from falling off the base rods 3a and 3a, and the upper rods 5a and 5a can be adjusted as required by a suitable adjusting mechanism. For example, when the horizontal frame 5b of the upper frame is gripped with the handle 4, the upper frame can be slid to adjust the protruding length, and when the horizontal frame 5b is released, the protruding length of the upper frame is fixed. Since there are various types of adjustment mechanisms in the prior art, the description thereof will be omitted.
[0011]
A base portion of the loading platform 1 is attached to the front side near the lower ends of the bases 3a and 3a so as to be rotatable around a horizontal axis. An axle 6a provided with these wheels 6 and 6 is rotatably provided.
[0012]
Thus, the cart according to the present invention includes an auxiliary frame 7 formed in a concave shape with a casing on the back side of the back frame 3, and a pair of left and right casters 8, 8 are provided at the lower end of the auxiliary frame 7.
[0013]
The auxiliary frame 7 can be rotated about a horizontal axis on the back side of a slide rod 9 provided so that the upper ends of the left and right rods 7a, 7a can slide along the base rods 3a, 3a of the back frame. The front end of the link arm 10 is attached to the center of the lower rod 7b of the auxiliary frame so that it can be rotated around the lower rod. The link arm 10 can be rotated around the axle 6a to the axle 6a. It is attached.
[0014]
The slide rod 9 has guide posts 11 and 11 through which the base rods 3a and 3a are inserted on the left and right, and can slide in the vertical direction along the base rod. The slide mechanism can be fixed at a required vertical position with respect to the bases 3a and 3a.
[0015]
Specifically, for example, as shown in FIGS. 3 and 4, engagement holes 12 and 12 (two in the upper and lower positions in this embodiment) are formed at required positions on the opposing surfaces of the bases 3a and 3a, respectively. The slide rod 9 is provided with engagement pins 13 and 13 that protrude into the guide post and are fitted into the engagement holes as appropriate.
[0016]
When the engagement pins 13 and 13 are engaged with the engagement holes 12 and 12 as shown in FIG. 4A, the engagement pins 13 and 13 are urged downward by the compression springs 14 and 14. The slide spring 9 is pushed outward by the left and right inclined surfaces 15a and 15a and is locked so as not to move. However, by holding the slide hook by hand, the compression spring as shown in FIG. When the grip body 15 is pushed upward against the elastic force of 14, the left and right inclined surfaces 15a, 15a of the grip body move upward, and the engaging pins 13, 13 are return springs 16, which are compression springs, 16 is pulled into the casing 9a of the slide rod 9 by the elastic restoring force, and is disengaged from the engagement holes 12, 12, so that the lock of the slide rod is released and the slide rod can move up and down.
[0017]
As shown in FIG. 5, the cart of the present invention configured as described above has a bag 17 placed between the loading platform 1 and the back frame 3, and the bag is fixed by an extendable holding band 18 made of, for example, a rubber string. use.
[0018]
In this state of use, the center of gravity G of the kite is located above the wheels 6 and 6 and the casters 8 and 8, so that no rotational moment acts on the handle 4 and therefore the user can pull the handle when pulling the cart. There is no need to lift 4 and the cart can be pulled stably, and even if the user releases the hand, the cart does not fall down.
[0019]
Further, the angle of the back frame 3 with respect to the floor surface 19 can be appropriately changed by moving the slide rod 9 up and down. Specifically, if the slide rod 9 is positioned upward, the casters 8 and 8 and the back frame The distance is shortened and the inclination of the back frame is large, that is, the height of the handle 4 can be set low. Conversely, if the slide rod 9 is moved downward, the distance between the casters 8 and 8 and the back frame 3 is reduced. The height of the back frame is small, that is, the height of the handle portion 4 can be set high. Therefore, the height of the handle portion is set to be easy to use according to the conditions such as the height of the user's back. It can be adjusted as appropriate.
[0020]
Further, the cart can be erected with the leg 2 and the wheels 6 and 6 with the back frame vertical, and in this case, the lower end of the back frame 3 is also in contact with the floor surface 19 as shown in FIG. It is configured so that the cart can stand upright stably.
[0021]
When the casters 8 and 8 are not used, the auxiliary frame 7 can be folded as shown in FIG. 7 by moving the slide rod 9 to the uppermost position. The auxiliary pin is locked by engaging the engaging pin with the upper engaging hole 12.
[0022]
Further, the cart of the present invention can be folded compactly when not in use. When the cart is folded, first, as shown in FIG. 8, the upper frame 5a, 5a of the upper frame 5 is attached to the base frame 3a of the back frame 3. 3a, the handle 4 is lowered, and the auxiliary frame 7 is folded as described above.
[0023]
Then, the loading platform 1 is rotated upward as shown in FIG. 9 and folded to the back frame side, and the leg body 2 is rotated downward and folded as shown in FIG.
[0024]
In the above-described embodiment, the engagement holes 12 and 12 of the base rods 3a and 3a for locking the slide rod 9 are opened at two places above and below the base rods. In some cases, a hole is made.
[0025]
In addition, the lock mechanism of the slide rod 9 has a structure in which the engagement pins 13 and 13 of the slide rod and the engagement holes 12 and 12 of the base rods 3a and 3a are engaged. If the configuration can be fixed, the engagement pin or the engagement hole may not be provided.
[0026]
Furthermore, although the cart 1 and the leg 2 are configured to be foldable in the cart of the above-described embodiment, they may be configured to be fixed so that they cannot be folded.
[0027]
[Effect of the present invention]
Since the cart according to the present invention includes a caster in the foldable auxiliary frame provided on the back side of the back frame, the load of the load placed on the loading platform is supported by the wheel and the caster when the cart is used. There is no load on the luggage.
[0028]
Therefore, the problem that the user always has to pull the cart while lifting the handle like a conventional carry cart is solved, the baggage can be carried stably, and the user's hand is less likely to get tired There is.
[0029]
In addition, the auxiliary frame equipped with the casters can adjust the distance between the casters and the back frame by moving the slide kite up and down, and the tilt angle of the back frame can be set arbitrarily. It can be adjusted to an easy-to-use position with respect to the height of the person.
[0030]
Furthermore, the auxiliary frame can be easily folded by moving the guide rod upward when using a cart without using a caster or when storing the cart.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a cart according to the present invention.
FIG. 2 is an enlarged side view showing a main part of the cart according to the present invention.
FIG. 3 is a bottom view of the slide rod.
FIGS. 4A and 4B are longitudinal sectional front views of a slide rod showing (a) a locked state and (b) an unlocked state, respectively.
FIG. 5 is a side view showing a use state of the cart according to the present invention.
FIG. 6 is a side view showing another use state of the cart according to the present invention.
FIG. 7 is a side view showing a state where the handle portion of the cart according to the present invention is lowered.
FIG. 8 is a perspective view showing a state where the auxiliary frame of the cart according to the present invention is folded.
FIG. 9 is a side view showing a state in which the cart loading platform according to the present invention is folded.
FIG. 10 is a side view showing a state where the legs of the cart according to the present invention are folded.
FIG. 11 is a side view showing an example of a conventional cart.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Loading platform 2 Leg body 3 Back frame 4 Handle part 5 Upper frame 6 Wheel 7 Auxiliary frame 8 Caster 9 Slide rod 10 Link arm 11 Guide post 12 Engagement hole 13 Engagement pin 14 Compression spring 15 Grip body 16 Return spring 17 １８ 18 Unloading band 19 Floor

Claims (2)

The left and right bases made of pipes are provided with a back frame in which the left and right upper side hooks of the upper frame provided with a handle portion between the upper parts of the left and right upper side walls made of pipes are slidably fitted into the bases. with the lower end of the back frame comprises a pair of left and right wheels, comprising a loading platform in the lower front side of the back frame, and includes a slide rod which can be moved along the longitudinal direction of the Moto杆, the slide扞any of the Moto杆 A lock mechanism that can be fixed to the position of the auxiliary frame, and the upper end of the auxiliary frame having a caster at the lower part thereof is attached so as to be rotatable about a horizontal axis in the horizontal direction, and between the lower part of the auxiliary frame and the lower part of the back frame. , the ends of the upper and lower, each connected by a link arm that can pivot about a horizontal axis in the lateral direction, to unlock the slide rod, is pushed down along the slide扞to Moto杆 Serial caster is lowered, also the slide rod pulled along Moto杆 and the casters and so that construction is raised, the load of luggage loaded on the loading platform during cart use and the auxiliary frame link It is supported by the wheels and casters by the mechanism of the arm, and the auxiliary frame can adjust the distance between the casters and the back frame by moving the slide rod up and down to arbitrarily set the inclination angle of the back frame. Carry cart characterized by what can be done. The lock mechanism of the slide rod is provided with a grip body for unlocking and is normally locked so that the slide rod does not move. However, when the grip body is grasped, the lock is released and the slide rod moves up and down. The carry cart according to claim 1, wherein the carry cart is configured to be able to be locked by releasing the grip body .

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