JPH0642486Y2 - Trunk with casters - Google Patents

Description

[Detailed Description of the Invention] (a) Industrial field of application The present invention relates to a trunk with casters in a large suitcase, trunk or the like (hereinafter referred to as a trunk) used for travel and the like.

(B) Conventional technology There are various types of conventional trunks with casters, but as a typical one, as shown in Fig. 3 (a), the handlebar is provided on the end plate 25 surface facing the handlebar 21. There was a trunk 20 in which rotary casters 23, 23 were arranged in parallel on the corner side closer to 22, and fixed casters 24, 24 in which the turning direction was limited to the front-back direction were arranged side by side on the far corner side. Then, as shown in FIG. 3B, the mounting seat plate 23a of the caster 23 is directly applied to the end plate 25, and the back plate 11 is applied to the inside of the end plate 25 so that both casters are attached. It was fixed with screws 12 from the seat plate 8 side.

As another structure, in Japanese Utility Model Laid-Open No. 51-54010, a vertical axis rod for axially supporting a wheel portion is inserted through a through hole of an inverted truncated cone-shaped abutment integrally formed with a bottom plate and connected with a nut. There is also a disclosure of a technique for attaching casters to the bag bottom by binding.

(C) Problems to be solved by the invention The conventional trunk 20 with casters described above has a handle 21,
With the casters 23, 23, it is possible to operate in a very natural posture without bending the body in an unnatural posture. Also, the rotary casters 23, 23 on the front surface and the fixed casters 24, 24 on the rear surface. With, it was possible to operate in an appropriate state with respect to the traveling direction. However, since the seat plate of the caster is screwed directly to the thin end plate or lower plate, the caster is not firmly attached, and the set screw 12 loosens during use and the caster rattles, or Often, the set screw 12 came off and the caster came off the end plate 25 or the like. In particular, when a large impact or the like is applied to the bracket portion 23b of the caster, there is a fear that the end plate 25 itself may be cracked or the mounting portion may be broken. If the end plate 25 or the caster mounting portion of the lower plate is once damaged, a large-scale and troublesome repair is required, which is troublesome.

Also, the caster mounting structure described in Japanese Utility Model Laid-Open No. 51-54010 has a structure in which the bracket portion is peeled off, similar to the conventional method described above, so that the impact on the bracket portion is directly transmitted to the bottom plate, Cracks often occur at the boundary between the base and the bottom plate, and it is difficult to repair.

D. Means for Solving the Problems The present invention has been made in view of the above circumstances, and the caster mounting portion at the corner portion of the case body is hard to be damaged even though it has a simple structure. It provides a trunk with casters that can be easily repaired even if it is damaged.
The structure consists of a pair of base and lid that are hinged to each other on one side edge, and each corner is curved at the four corners of the bottom surface of a rectangular parallelepiped case body. In a trunk consisting of a curved plate) and fixed or rotating casters attached, the caster mounting structure for the case body is a smooth surface with screw insertion holes at the corners of the bottom surface of the case body. The mounting curved plate is provided with a fitting step portion having the same thickness as that of the mounting curved plate, and the mounting curved plate is provided with a recessed portion having a screw insertion hole formed therein, and the periphery of the recessed portion is expanded from the curved surface of the corner portion of the case body. With the mounting curved plate covered at the corners and the back surface of the recess abutting against the smooth surface, stack the packing on one side and insert it into the screw insertion hole so that the smooth surface and the recess are sandwiched. It consists of steel plate with protruding screw holes Plate and is obtained by screwing the seat plate of the caster in contact fitted in the recess person.

E action The caster mounting part at the corner of the bottom of the case body should have the smooth surface with the concave part of the mounting curved plate
Since casters are attached, it has high strength and can be prevented from damage due to impact or the like.

Also, since the packing is laminated on the back plate, the impact received by the casters can be relaxed, and in addition,
Since the screw stopper projectingly provided on the back plate is adapted to be fitted into the screw insertion hole of the smooth surface, the back plate is prevented from being displaced or rattling when screwed to the seat plate of the caster.

Furthermore, the mounting curved plate is excellent in rigidity because the periphery of the concave portion bulges from the curved shape of the corner of the case body to form a convex ring, and it is mounted with the seat plate fitted. Since the bracket portion of the caster is covered with the mounting curved plate, it is protected from external force and is extremely unlikely to be damaged.

If the mounting curved plate is damaged due to a shock or the like, it is possible to replace only the mounting curved plate, and a large-scale and troublesome repair is not required.

In addition, the corner portion of the case body has a stepped fitting part that is recessed and molded, so there is no step even if the mounting curved plate is covered, and since it is integrated with it, it is excellent in aesthetics. ,
In addition, since it is covered with the mounting curved plate, the distance between the smooth surfaces can be widened in the width direction to stabilize the traveling by the casters.

F. Embodiment An embodiment of the trunk with casters according to the present invention will be described with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 is a case body as a base body made of synthetic resin, one surface of which is open, and 2 is a lid body made of synthetic resin, which covers the opening. The case body 1 includes an upper plate 1a, a lower plate 1b, and side plates.
1c and both end plates 1d and 1e, and the lid 2 is an upper plate 2a and a lower plate
2b, side plate (not shown) and both end plates (not shown), 2e
Both are formed so that the lower plates 1b and 2b are hinged to each other and can be opened and closed. Further, a body band 3 is provided around the opening of the case body 1, a handle 4 is provided at the center of the body band 3 on the side of the upper plate 1a, and a handle is provided at the center of the body band 3 on the side of the end plate 1d. No lock) is provided, and tilting locks 5 and 5 as locking tools are provided outside the proximal end of the handle 4.

Each corner portion of the upper plate 1a, the side plate 1c, and the end plate 1e in the case main body 1 has a curved surface shape, and these parts adjoin each other to form a protrusion-shaped three-corner angle adjoining portion (hereinafter referred to as a corner portion). The mounting curved plate 6 as a caster mounting member,
Further, each corner portion of the lower plate 1b, the side plate 1c, and the end plate 1e in the case body 1 also has a curved shape similar to the above corner portion, and they are adjacent to each other to form a projecting corner portion. Each is provided with a mounting curved plate 7 as a caster mounting member. Further, a mounting curved plate 7'having the same shape as that of the mounting curved plate 7 is mounted upside down at a position facing the mounting curved plate 6 on the lid 2, and the mounting curved plate 7 on the lid 2 is mounted on the mounting curved plate 7 '. A mounting curved plate 6'having the same shape as the mounting curved plate 6 is mounted upside down at the opposite position. Rotating casters 8 and 8 are attached to the mounting curved plates 6 and 7'near the upper plates 1a and 2a, respectively, and the mounting curved plates 6 and 7 near the lower plates 1b and 2b are mounted. Fixed casters 9, 9 whose rotation direction is limited to the front-rear direction are respectively attached to ′.

Details will be described below with reference to FIG. In FIG. 2, each corner portion of the upper plate 1a, side plate 1c, and end plate 1e of the case body 1 has a curved shape, and the protruding corner portion 10 formed adjacent to each other has a mounting curved plate. So that the back surface of 6 can be closely attached to the surface of each corner portion of the upper plate 1a, the side plate 1c, and the end plate 1e,
Fitting step 10a corresponding to the thickness t of the mounting curved plate 6
Is formed by dropping. A square smooth surface 10b is provided on the end plate 1e side of the corner portion 10, and the smooth surface 10b
Four screw insertion holes 10c are formed in the.

Further, the mounting curved plate 6 has a back surface formed in a shape capable of being brought into close contact with the front surface of the corner portion 10, a rectangular recess 6a is provided at a position corresponding to the smooth surface 10b, and the bottom of the recess 6a is provided. Four screw insertion holes 6b are formed to face the screw insertion hole 10c. The peripheral frame portion 6c of the concave portion 6a bulges with respect to the smooth surface 10b portion of the corner portion 10, and the bulging portion 6d.
The ribs (convex ring shape) around the recess 6a of the mounting curved plate 6
It becomes a structure and increases the strength of itself.

8 is a commercially available rotary caster, 8a is a seat plate, and the seat plate 8a
Four screw insertion holes 8b are formed in this. Further, 11 is a back plate, and the steel plate 11a and packing 11b are overlapped with each other, and the back plate 11 is provided with four screw holes 11c projecting to the packing 11b side.

The mounting curved plate 6 and the rotary caster 8 configured as described above are mounted as follows. That is, the mounting curved plate 6 is closely adhered to the corner portion 10, the mounting seat plate 8a of the rotary caster 8 is brought into contact with the recess 6a of the mounting curved plate 6, and the screwing hole 11c of the back plate 11 is projected. Part from the back of the corner 10 into the screw insertion hole 10c, and set screw 12 into the screw insertion hole 8
Insert it from b into the screw insertion hole 10c, and
screw on c. As described above, the rotary caster 8 is firmly attached to the screw fixing hole 11c of the back plate 11 through the double structure of the corner portion 10 and the mounting curved plate 6, and the screw insertion of the corner portion 10 is made possible. Since the set screw 12 is not directly inserted into the hole 10c and the set screw 12 is screwed into the screw hole 11c, the rotary caster 8 loosens and rattles, or the rotary caster 8 receives an external impact. Therefore, the corner portion 10 is prevented from being damaged due to this. Should the mounting curved plate 6 be damaged, the set screw 12 can be easily replaced by loosening the set screw 12 and removing it.

In the above, among the four corner portions corresponding to the bottom of the standing posture of the trunk, the mounting curved plate 6 is attached to the portion where the corner portions of the upper plate 1a, the side plate 1c, and the end plate 1e are adjacent to each other to form a protruding corner portion. The case where the rotary caster 8 is attached to the mounting curved plate 6 is described, but the configuration of the mounting curved plates 6 ′, 7 and 7 ′ which are superposed on the other corners and closely adhered thereto, and The method of attaching the rotary casters 8 and the fixed casters 9 to be attached to each of them is the same as that of the above-described example, and therefore the description thereof is omitted.

As described above, in the trunk with casters according to the present invention, the caster mounting portion covers the mounting curved plate at the corner portion of the bottom surface of the case body, and firmly fixes the casters so as to sandwich them. Since it is attached, it can be manufactured easily and inexpensively, it has excellent strength and is not easily damaged, and even if it is damaged it can be easily repaired, and in addition, the distance between the casters can be widened to stabilize the running. It also has the effect.

It also has a beautiful appearance and is extremely practical.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a trunk with casters according to the present invention, FIG. 2 is an enlarged exploded perspective view of an essential part thereof, and FIG. 3 (a) is a front view of a conventional trunk with casters.
FIG. 6B is an enlarged perspective view of the main part. 1 ... Case body, 1a ... Upper plate, 1b ... Lower plate, 1c ... Side plate, 1d, 1e ... Both end plates, 2 ... Lid, 2a ... Upper plate, 2b ...
... Lower plate, 3 ... Body band, 4 ... Handle, 5 ... Retractable lock, 6, 6 ', 7, 7' ... Mounting curved plate, 6a ... Recessed part,
6b …… Screw insertion hole, 6c …… Surrounding frame part, 6d …… Swelling part,
8 …… Rotary caster, 8a …… Seat plate, 8b …… Screw insertion hole, 9 …… Fixed caster, 10 …… Corner corner, 10a ……
Step, 10b ... Smooth surface, 10c ... Screw insertion hole, 11 ... Back plate, 11a ... Steel plate, 11b ... Packing, 11c ... Screw hole, 12 ... Set screw.

Claims (1)

[Scope of utility model registration request] 1. A caster mounting curved plate is provided at four corners of a bottom surface of a rectangular parallelepiped case body having a pair of bases and lids each having one side edge hinged to each other and each corner being curved. However, in a trunk with fixed or rotating casters attached, the caster mounting structure for the case body has a smooth surface with a screw insertion hole at the corner of the bottom surface of the case body, and a caster mounting curve. A stepped portion with the same thickness as the plate is provided, and a recess with a screw insertion hole is provided in the caster mounting curved plate, and the periphery of the recess is bulged from the curved surface of the corner of the case body, and the corner angle is increased. With a caster mounting curved plate covering the part and the back surface of the recess abutting against the smooth surface, a packing is laminated on one side so that the smooth surface and the recess are sandwiched, and a screwing hole to be fitted into the screw insertion hole From the steel plate And the back plate, casters trunks, characterized in that screwed to the seat plate of the caster in contact fitted in the recess person.