JPS5851657Y2 - Structure of wheel mounting plate in simple article carrier - Google Patents

Description

[Detailed description of the invention] The present invention includes a single rear frame, which is arranged in a position facing each other, and at least one of which is pivoted into a folded position overlaid on the front side of the rear frame. a pair of side frames connected to both left and right ends of the rear side frame in a state possible, and a bottom frame for carrying goods arranged at the lower end of a space surrounded by these three side frames; In a simple article conveyance device, wheels are attached to the left and right ends of the rear side frame and near the front ends of the left and right side frames at the lower ends of these side frames, and the rectangular shape is used to attach the wheels. plate of,
Specifically, in order to fold and swing the side frames, the horizontal frame members of the same shape are fixed to the lower ends of each of the side frames, and the mounting seat plates on the wheel side are respectively fixed to the lower surfaces of the horizontal frame members. The present invention relates to an improvement in the structure of a wheel mounting plate for fixing the wheel mounting plate by tightening and fixing the same at multiple locations around the circumference using bolts and nuts.

Various types of wheels are selected depending on the type of movement of the simple article carrier and the total weight of the rack.

For example, in the case of movement by pushing forward or pushing sideways,
A pair of fixed wheels (one that does not rotate around the vertical axis) and a pair of free wheels (one that rotates around the vertical axis) are used; in the case of non-directional movement, all four wheels are free wheels. .

Also, wheels with a large diameter are used to increase the total weight of the rack.

However, these various types of wheels (especially commercially available wheels) have different arrangement patterns of bolt holes formed on their mounting seats, and conventionally, multiple types of bolt holes are provided for each type of wheel. As the wheel mounting plates were manufactured, the high-mix, low-volume production increased costs, and the selection and assembly during assembly resulted in a decrease in work efficiency due to differences in specifications, etc. The present invention was developed in light of these circumstances. The purpose of this invention is to make mounting plates for various types of wheels general-purpose, thereby reducing costs through mass production of various types and improving workability in assembling.

First, embodiments of the present invention will be described below based on the drawings.

The simple article carrier includes a single rear frame 1, a pair of left and right side frames 2 and 3 that are arranged facing each other at right angles to the rear frame 1 at both left and right ends of the rear frame 1, and these side frames 2 and 3. It extends from the storage bottom frame 4 located at the lower end of the space surrounded by the three side frames 1.2.3, and near both left and right ends of the rear side frame 1, and from the left and right side frames 2.3. A total of two moving wheels 5 are attached near the front end.

The left and right side frames 2゜3 are connected to the rear side frame 1 by a plurality of upper and lower connectors 6, 6, etc., and one or both of the side frames 2, 3 are connected to the rear side frame 1. It is configured to be able to swing and switch to a folded position superimposed on the front side.

The storage bottom frame 4 is pivotally connected around the horizontal axis to a horizontal frame member 7 made of angle material fixed to the lower end of the rear side frame 1.
It is configured to be swingable and switchable to a folded position superimposed on the front side of the rear frame 1.

Folding of the bottom frame 4 is carried out prior to folding of the swing side frames.

When the storage bottom frame 4 is folded down, its left and right sides are supported by horizontal frame members 7, 7 made of angle members having the same shape as described above and fixed to the lower ends of the left and right frames 2, 3, respectively.

8 tows the left and right side frames 2 and 3 at their front ends,
It is a stay that provides tension support, and is swingably held by one side frame 2 and can be freely engaged with and disengaged from the other side frame 3.

Reference numeral 9 denotes an elastic band for preventing cargo from falling, which is permanently installed on one side frame 2 and can be attached to and detached from the other side frame 3.

The wheels 5... are attached to the lower end horizontal frame members 7... of the respective side frames 1, 2, 3 in the following manner.

That is, as shown in FIG. 2, a rectangular grate P is fixed to the lower surface near the longitudinal end of the horizontal frame member 7, and a rectangular grate P is fixed to the lower surface of the plate P as shown in FIG. As shown, attach the mounting seat plate 5A of the wheel 5... to the plate P... and tighten the bolt 10.
. . 11 . . . The tightening is fixed.

The play) P is constructed as shown in FIGS. 4 and 5.

That is, the upwardly rising wall portion 12 is integrally formed by press working from the entire periphery of the rectangular plate bottom plate portion 13, with the portion 12a that is fixed to the lower surface of the horizontal frame member 7 being slightly higher than the other portions 12b. and the bottom plate part 13
The bolts 10..., nuts 11 are placed at multiple locations around the
Tightening by... has bolt holes V... that can be adjusted to change the fixed pitch to multiple pitches, and nuts placed on the top surface of the bottom plate part 13 on the sides of these bolt holes V... This is based on the detent part m... of 11....

More specifically, the bolt holes V... are formed symmetrically with respect to the width center line of the short side of the plate P, and are connected to the free end side hole V'1, the intermediate hole v2, and the base hole V'1 on the free end side with respect to the horizontal frame member 7. The hole v3 on the end side has a different shape and size from each other.

In other words, as shown in FIG.
The pitch of 0... is al = 56nm, bx-100m
m, in the case of a small diameter free wheel, the pitch of the bolt holes u3 of the mounting seat plate 5A2 is a2 = t) 2 = 8
'Omm, or in the case of a large diameter free wheel, the pitch of the bolt hole u3 of the mounting seat plate 5A3 is a3 = b3 =
Targeting 90 mm, in order to be able to share one plate P for these three types of patterns, v□, ■
□ is a round hole, v2. V2 is a short elongated hole that inclines inward toward the proximal end, V33 is a long elongated hole that inclines inward toward the distal end, and the pitch between vl and 71 and the pitch between v3 and v3 inner ends are Each A1=al
, the pitch between the inner ends of vl and v3 is set to Bt=b1, and v2.
v2 inner end pitch and V3. The appropriate pitch between the middle parts of V3 is set to A 2 = a 2, the pitch between the inner end of v2 and the middle part of v3 is set to Bz=bz, and V2. The pitch between V2 outer ends and the pitch between V35 outer ends are respectively A3
= a 3, and the pitch between the v2 outer end and the v3 outer end is set to 83=l)3.

However, this is just one representative example, and if the form of the target mounting seat plate 5A... is different,
In response to this, the size and arrangement pattern of the bolt holes V... are changed.

The anti-rotation portion m... has the inner peripheral surface portion of the rising wall portion 12 also serve as a protrusion 14 which is precipitated upward from the bottom plate portion 13 in the vicinity of the bolt holes V 3 and V 3 .
, 14.

Especially bolt hole v3. v3 is covered by the horizontal frame member 7 and it is difficult to insert a wrench therein, so it is necessary to use the protrusions 14, 14 to prevent rotation.

On the other hand, since the bolt holes V 1 , V 2 , . . . are located in outwardly exposed portions, they do not necessarily require rotation prevention.

The reason why there is a head difference between the two parts 12a s 12b of the rising wall part 12 is that when the side frame is folded, the drop L/-
) This is to allow P to smoothly wrap around below the rear horizontal frame member 7 at the low portion 12b on the free end side.

Note that the structure of the play P may be such that the cross-sectional shape protrudes upward at the intermediate portion.

Further, the four wheels 5 may be mounted near both front and rear ends of the left and right frames 2 and 3, respectively, as shown in FIG.

In summary, the present invention provides a simple article carrier as shown in the embodiment, in which the structure of the wheel mounting plate is such that the portion 12a that is fixed to the lower surface of the horizontal frame member 7 is slightly higher than the other portions. In addition, the bolts 10 and nuts 1 are installed at multiple locations around the plate bottom plate portion 13.
The tightening according to No. 1 is characterized by having bolt holes V... which can change the fixed pitch to multiple types of pitches, and the mounting seat plate has different bolt hole arrangement patterns. For multiple types of wheels 5... with 5A..., we have made it possible to share the -specification plate, so - it is possible to reduce costs through mass production of different types and to achieve uniform specifications for assembly. It's arrived.

[Brief explanation of drawings]

The drawings show an embodiment of the structure of the wheel mounting plate in the simple article carrier according to the present invention, and FIG. 1 is an overall perspective view;
FIG. 2 is a plan view showing the folded state, FIG. 3 is a front view of the vicinity of the lower end, FIG. 4 is a perspective view of the plate, FIG. 5 is a plan view of the plate, and FIG. 7 is a plan view of the mounting seat plate, and FIG. 7 is a plan view of another type. 1... Rear frame, 2, 3... Left and right side frames, 4... Bottom frame for carrying things, 5... Wheels, 5A... Mounting seat plate, 7...
・Horizontal frame member, 10... bolt, 11... nut,
12... Rising wall portion, 12a... Fixed equivalent portion, 1
3...Bottom plate part, P...plate, ■...bolt hole, m...rotation prevention part.

Claims (1)

[Scope of utility model registration request] arranged in a mutually opposing posture with one rear side frame 1, and
The rear frame 1 is in a state where it can be pivoted to a folded position in which at least one of the objects is superimposed on the front side of the rear frame 1.
It consists of a pair of side frames 2, 3 connected to both the left and right ends of the frame, and a bottom frame 4 for carrying goods arranged at the lower end of the space surrounded by these three side frames L2, 3, and the rear side At both left and right ends of the frame 1 and near the front ends of the left and right side frames 2 and 3, horizontal frame members 7 of the same shape are fixed to the lower ends of these side frames L2 and 3...A rectangular plate P is attached to the lower surface. ..., and abut the mounting seat plate 5A on the wheel 5 side on the bottom surface of this plate P..., and tighten the bolts 10,
In a simple article conveyance device, the wheels 5 are attached by tightening and fixing them through nuts 11, and the wheels 5 are attached to the lower surface of the horizontal frame member 7, which constitutes the rectangular plate P. The fixed portion 12a is configured to be slightly higher than other portions, and the bolts 10 and nuts 11 are tightened at multiple locations around the plate bottom plate portion 13 with bolts that can be adjusted from a fixed pitch to multiple types of pitches. A structure of a wheel mounting plate in a simple article conveyance device characterized by a hole V...