JP2003102574A - Wheel for preventing drawer storing body from inclining and falling down - Google Patents

Abstract

PROBLEM TO BE SOLVED: To integrally form a roller and a base which can be brought into contact with a floor face accompanied with pulling-out operation for the lowermost step drawer by using a plastic material. SOLUTION: The base 2 is provided with a fitting part 20 fitted into a fitting recessed part 104 formed on the underside of the front side of a drawer from the lower side and a bearing part 21 provided with a bearing hole 21a with a larger hole diameter than the outer diameter of a rotating shaft 10 of a roller 1 under a through-hole condition. The base 2 and the roller 1 are integrally molded by means of injection molding under a condition where the rotating shaft 10 of the roller 1 is inserted through the bearing hole 21a of the bearing part 21 by a slider being separated in the shaft line direction of the rotating shaft 10 by utilizing the difference between the outer diameter of the rotating shaft 10 and the hole diameter of the bearing hole 21a. In the fitting part 20 of the base 2, a hooking part 20f elastically hooked on a part 105 to be hooked formed in the fitting recessed part 104 accompanied with fitting into the fitting recessed part 104 is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mounted on the lower part of the drawer at the bottom of the drawer in the drawer housing and prevents the drawer housing from tilting forward when the drawer at the bottom is pulled out. Regarding the improvement of the prevention wheel.

[0002]

2. Description of the Related Art It is attached to the lower part of the front plate of the lowermost drawer in a drawer storage such as a sleeve desk to prevent the drawer storage from tilting forward when the lower drawer is pulled out. There is a fall prevention device of Utility Model Registration No. 2543413 published in Utility Model Registration Gazette, and a fall prevention device of Utility Model No. 55-483 published in Utility Model Publication.

[0003]

However, from the viewpoint of facilitating the assembly of the drawer storage body equipped with this type of fall prevention device, the structure of this type of fall prevention device is made as simple as possible and one-touch operation is possible. It is desirable to be able to properly attach to the lower front side of the bottom drawer.

Further, in these conventional tipping prevention devices, a roller that comes into contact with the floor surface when the lowermost drawer is pulled out and a main body portion for attaching this roller to the lowermost drawer. It is constructed as a separate entity that is assembled by the final assembly.

If a member corresponding to the roller in contact with the floor surface, the main body and the plastic material can be integrally molded, not only the number of parts can be reduced but also such an assembly can be eliminated. Since at least the member corresponding to is required to rotate so as not to interfere with this operation when pushing the drawer from the grounded state to the floor surface, it is required.
Simply, the member corresponding to the roller and the main body cannot be integrally formed.

In view of the above, the present invention enables a fall prevention device of this type to be properly attached to the lower part of the drawer at the bottom of the drawer in the front side by one-touch operation, and the drawer of the drawer at the bottom. The main purpose of the present invention is to make it possible to integrally form a roller, which can come into contact with a floor surface or the like with the operation and is rotatable, and a base for attaching the roller to a drawer, using a plastic material.

[0007]

In order to achieve the above object, in the invention according to claim 1, the tilting prevention wheel of the drawer container is provided with the following constitutions (1) to (6). I made it. (1) A plastic anti-tilt wheel that is attached to the lower part of the front side of the bottommost drawer to prevent the drawer storage body from tilting forward when the drawer is pulled out. (2) It is equipped with a roller and a base. (3) The rotation shafts of the rollers protrude from both sides thereof, and (4) the base has a mounting portion that is fitted from below into a fitting recess formed in the front lower portion of the drawer, and the rotation of the roller. And a pair of bearing portions having a bearing hole for making the diameter larger than the outer diameter of the rotary shaft in a penetrating state. (5) The outer diameter of the rotary shaft and the bearing By utilizing the difference between the hole diameter and the diameter of the hole, one of the rotary shafts of the roller is inserted into the bearing hole of the one bearing portion by a slider that is separated in the axial direction of the rotary shaft, and the rotary shaft of the roller. The other side of the other bearing The base and the roller are integrally molded by injection molding in a state of being inserted into the receiving hole, and (6) the fitting recess of the base is fitted to the fitting recess along with the fitting into the fitting recess. A hooking portion elastically hooked to a hooked portion formed therein is provided.

According to this structure, when the bottom drawer is pulled out and the drawer storage body tries to lean forward due to the weight of the stored items in the drawn drawer, the floor surface of the roller. It is possible to prevent this forward leaning by touching the ground.

Further, when pushing the drawer back to the original storage state from the drawer state in which the roller is grounded to the floor surface or the like to prevent the forward tilting, the lower end is grounded to the floor surface or the like. This pushing back can be smoothly carried out by the rotation of the roller.

Further, since the engaging portion which is elastically engaged with the engaged portion in accordance with the fitting of the mounting portion into the fitting recess is provided in the mounting portion, the engaging portion causes the mounting portion to have the above-mentioned structure. It is possible to stably maintain the fitting state in the fitting recess.

Further, by utilizing the difference between the outer diameter of the rotary shaft of the roller and the hole diameter of the bearing hole, one of the rotary shafts of the roller is moved by one of the sliders which separates in the axial direction of the rotary shaft. The base and the roller are integrally formed by injection molding in a state where the base and the roller are inserted into the bearing hole of the bearing portion and the other of the rotary shafts of the rollers is inserted into the bearing holes of the other bearing portions. Therefore, the tilt prevention wheel can be molded with a single mold, and
Since it is not necessary to separately assemble the base side and the roller side, it is possible to easily and inexpensively provide the tilt prevention wheel.

Further, in the invention according to claim 2, the engaging portion of the tilt prevention wheel of the drawer container according to claim 1 is on the front side of the drawer of the drawer with the vertical line passing through the rotation axis of the roller being sandwiched therebetween. It is characterized by being formed.

According to this structure, particularly, when the drawer is pushed back to the original storage state from the pulled-out state of the drawer in which the roller is grounded on the floor surface or the like to prevent the forward inclination, the mounting portion is acted upon. The force in the direction in which the mounting portion can be pulled out from the fitting recessed portion can be appropriately resisted by the engagement of the engagement portion provided at the position with the engagement portion. That is, by providing the mounting portion with the minimum necessary engaging portion, the mounting state of the mounting portion in the fitting recess can be increased without excessively increasing the resistance when the mounting portion is fitted into the fitting recess. Can be stably maintained.

Further, in the invention according to claim 3, in the fitting direction into the fitting recess formed in the drawer in the base attachment portion of the tilt prevention wheel of the drawer storage body according to claim 1 or 2. It is characterized in that a rib, which is elastically adhered to the inner surface of the fitting recess along with the fitting of the mounting portion into the fitting recess, is formed on a side portion along the fitting direction.

According to this structure, by this rib,
The fitting portion can be fitted into the fitting concave portion without rattling, and the drawer can be appropriately equipped with the tilt prevention wheel.

Further, in the invention according to claim 4, the drawer is formed on the upper portion of the base mounting portion of the tilting prevention wheel of the drawer storage body according to claim 1, claim 2 or claim 3. Along with the fitting of the mounting portion into the fitting recessed portion, a fitting portion that fits with a fitted portion formed inside the fitting recessed portion is formed.

According to this structure, by fitting the fitting portion into the fitted portion, the fitting portion is fitted into the fitting concave portion without any displacement in the front, rear, left and right, and the tilting prevention wheel is appropriately attached to the drawer. Can be made.

In the invention according to claim 5, the bearing portion of the base of the tilt prevention wheel of the drawer container according to claim 1, claim 2, claim 3 or claim 4,
A sub-bearing hole along the inner peripheral surface of the hole is formed in a circular arc of a virtual circle having a diameter approximately equal to the outer diameter of the roller rotation shaft, and this sub-bearing hole is located above the bearing hole. In, in order to allow the rotary shaft located in the bearing hole to enter the sub-bearing hole,
It is characterized by communicating with this bearing hole.

According to this structure, when the lower end of the roller does not come into contact with the floor surface or the like, the rotating shaft of the roller is located in the bearing hole, while
At least when a force in a forward tilting direction is applied to the drawer storage body when the drawer is pulled out, the lower end of the roller is grounded to the floor surface or the like, so that the rotation shaft of the roller is supported by the auxiliary bearing. Can be inserted into the hole.

As a result, according to this structure, particularly when the drawer is pushed back to the original storage state from the drawer state in which the roller is grounded on the floor surface or the like to prevent the forward tilt, the drawer is returned to the original storage state. Can be rotated without backlash by using the inner peripheral surface of the sub-bearing hole, which has an inner peripheral surface along an arc of a virtual circle having a diameter substantially equal to the outer diameter of the rotating shaft of the roller, as a guide, and pushes this back. Can be done smoothly.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Typical embodiments of the present invention will be described below with reference to FIGS.

1 to 6 show the tilting prevention wheels of the drawer container according to this embodiment, and FIGS. 7 and 10 show the main part in section. ing. Further, FIG. 8 and FIG. 9 show an enlarged main part thereof. 11 to 13 show the drawer H.
It shows the state where the tilt prevention wheel is attached to each,
In particular, FIG. 10 shows a state where the lower end of the roller 1 is in contact with the floor surface F. Further, FIG. 14 shows the main part of the lower end portion 101 of the front plate 100 of the drawer H to which the tilt prevention wheel is attached and the tilt prevention wheel when viewed from below in a separated state.

The anti-tilt wheel of the drawer storage unit G according to this embodiment is attached to the front lower portion Ha of the lowest drawer H in the drawer storage unit G such as a sleeve desk, a wagon (drawer with casters), and a filing cabinet. This is used to prevent the drawer container G from tilting forward in association with the pulling-out operation of the drawer H at the lowermost stage.

That is, when the contents are stored to some extent in the lowermost drawer H of the drawer storage body G of this type,
When the drawer H at the lowest stage is pulled out, the center of gravity of the drawer storage body G often moves to the drawer front side of the drawer H. When the center of gravity of the drawer container G moves in this way, the drawer container G as a whole tilts forward as the bottom drawer H is pulled out. The tilt prevention wheel according to the present embodiment is provided with a floor surface F when the drawer storage unit G is about to tilt forward.
It is grounded on the ground and functions to prevent this forward leaning.

The tilt prevention wheel according to this embodiment includes a plastic roller 1 and a plastic base 2.

Further, the roller 1 has a rotating shaft 10 protruding from both surfaces thereof (that is, both surfaces in the vertical direction of the roller 1).

The base 2 includes a mounting portion 20 which is fitted from below into a fitting recess 104 formed in the front lower portion Ha of the drawer H, and a bearing hole 21a of the rotary shaft 10 of the roller 1 for rotating the base 2. It is provided with a pair of bearing portions 21 and 21 having through holes a bearing hole 21a having a hole diameter larger than the outer diameter of the shaft 10.

In this embodiment, the lower end 101 of the front plate 100 of the drawer H at the bottom is the front plate 10.
The mounting portion 20 of the base 2 is fitted from below into a fitting recess 104 formed at a position approximately midway in the left-right direction of 0.

Then, in the state where the mounting portion 20 is fitted in the fitting concave portion 104 as described above, the roller 1 is
However, between the lower end of the roller 1 and the floor surface F on which the drawer storage body G is installed, etc. are arranged with a slight gap. (Figure 13)

As a result, in this embodiment, when the drawer H at the lowermost stage is pulled out, the drawer storage body G tends to lean forward due to the weight of the contents stored in the drawn drawer H. In this case, the forward inclination can be prevented by grounding the roller 1 on the floor surface F or the like.

Further, when pushing the drawer H back to the original storage state from the pulled-out state of the drawer H in which the roller 1 is grounded to the floor surface F or the like to prevent the forward inclination, as described above. This pushing back can be smoothly performed by rotating the roller 1 whose lower end is grounded.

In this embodiment, the fitting recessed portion 104 is configured to be recessed upward from the lower end portion 101 of the front plate 100 within the thickness of the front plate 100. It is open below.

Further, the fitting recess 104 has (1)
A front inner surface 104a along the left-right direction of the front plate 100 on the front surface 102 side of the front plate 100, (2) a rear inner surface 104b facing the front inner surface 104a, and (3) a front inner surface 104a and a rear inner surface. Inner surface 1 on the side extending from 104b
04c and (4) inner back surface 104d,
(5) The rear inner surface 104b is formed so that the portions other than the left and right sides of the rear inner surface 104b are close to the front inner surface 104a.
The right and left side portions of the fitting recessed portion 104 are respectively viewed in the state where the fitting recessed portion 104 is viewed from below.
It is configured to be bent at a substantially right angle toward the back surface 103 side of 0. (Figure 14)

On the other hand, in this embodiment, the mounting portion 20 of the base 2 is a substrate portion 20a extending in the horizontal direction.
Is formed so as to project from this upper surface.

The mounting portion 20 is formed so as to have an outer shape that follows the inner shape of the fitting recess 104. That is, the mounting portion 20 has (1)
A front outer surface 20b which is in close contact with a front inner surface 104a of the fitting recess 104 upon fitting into the fitting recess 104; and (2) a side inner surface 104c of the fitting recess 104 upon fitting into the fitting recess 104. The outer surface 20c of the side portion that is in close contact with (3) the recessed portion 1
Of the rear inner surface 104b of the fitting recess 104 associated with the fitting into the back 04, the rear outer surface closely contacting a part 104b 'of the rear inner surface 104b formed so as to be separated from the front inner surface 104a of the fitting recess 104 by the bending. 20d, and (4) with the fitting into the fitting recess 104, the inner back surface 104d of the fitting recess 104.
And an upper outer surface 20e that is pressed against.

Further, the mounting portion 20 of the base 2 is provided with an engaging portion 20f which is elastically engaged with an engaged portion 105 formed in the fitting recess 104 when the base 2 is fitted into the fitting recess 104. Has been.

In this embodiment, the engaging portion 2
0f is once elastically deformed as the mounting portion 20 is fitted into the fitting recess 104, and then the mounting portion 20 is completely fitted into the fitting recess 104 (that is, the upper outer surface 20e of the mounting portion 20). Fitting recess 10
4 at a position where it abuts against the inner back surface 104d of 4) and is elastically returned to form an engaging projection 20g which is engaged with the engaged portion 105 on the fitting concave 104 side formed as the engaging recess 105a.

Contrary to this embodiment, the engaging portion 20f is once elastically deformed as the mounting portion 20 is fitted into the fitting recess 104, and then the mounting portion 20 is fitted. The engaged portion 105 on the side of the fitting recess 104, which is formed as a fitting protrusion that elastically returns to the recess 104 at a position where the fitting is completely cut off, may be configured as a fitting recess that is engaged by this elastic return.

In this embodiment, the mounting portion 2
The hooking projection 20g of 0 is the front outer surface 20 of the mounting portion 20.
It is formed so as to protrude from b. Further, the engaging recess 105 a of the fitting recess 104 is the fitting recess 104.
It is formed so as to be recessed from the front inner surface 104a toward the front surface 102 side of the front plate 100. The engaging projections 20g are formed on the left and right sides of the mounting portion 20, respectively. Correspondingly, the engaging recesses 105a are also formed on the left and right sides of the fitting recess 104, respectively.

Specifically, in this embodiment,
The engaging projection 20g of the mounting portion 20 is an outer surface side of the elastic piece 20k that is divided by a substantially U-shaped split groove 20j that communicates the inside and the outside of the protruding plate portion that forms the front outer surface 20b of the mounting portion 20. Is formed in.

Further, the engaging projection 20g of the mounting portion 20
Has an apex on the lower end side of the elastic piece 20k, an engaging surface 20h on the lower side of the apex, and an inclined surface 20i that gradually decreases from the apex toward the upper side.

Further, in this embodiment, the mounting portion 20 is formed from the top of the engaging projection 20g formed in this way.
The distance to the rear outer surface 20d is smaller than the distance from the front inner surface 104a of the fitting recess 104 to a part 104b 'of the rear inner surface 104b formed to be separated from the front inner surface 104a of the fitting recess 104 by the bending. , Configured to be slightly larger.

As a result, in this embodiment, as the mounting portion 20 is fitted into the fitting recess 104, the engaging projection 20g is pressed against the front inner surface 104a of the fitting recess 104. The elastic piece 20k can be bent inward by this pressing. Since the elastic piece 20k is flexed by the inclined surface 20i, the fitting can be smoothly performed.
Then, after this, the mounting portion 20 is inserted into the fitting recess 104.
The elastic piece 20k can be elastically returned at the position where the fitting is fully fitted so that the engaging surface 20h of the engaging projection 20g is engaged with the lower inner surface of the engaging recess 105a formed in the engaging recess 104. It is possible to stably maintain the fitting state of the mounting portion 20 in the fitting recess 104.

Further, in this embodiment, the engaging portion 20f has a vertical line x passing through the rotation axis of the roller 1.
It is formed on the front side of the drawer of the drawer H sandwiching the box.

As a result, in this embodiment, in particular, as described above, from the pulled-out state of the drawer H in which the roller 1 is grounded on the floor surface F or the like to prevent the forward tilt, the drawer H is pulled out. When pushing back to the original stored state, the force exerted on the mounting portion 20 in the direction that allows the mounting portion 20 to be pulled out from the fitting recess 104 is applied to the engaged portion 105 of the engaging portion 20f provided at the position. It can be properly resisted by hooking. That is, by providing the mounting portion 20 with the minimum required engaging portion 20f, the fitting recess of the mounting portion 20 is not increased without excessively increasing the resistance when the mounting portion 20 is fitted into the fitting recess 104. The fitting state to 104 can be maintained stably.

Further, in this embodiment, the attachment portion 20 to the fitting recess 104 is provided on the side portion of the attachment portion 20 of the base 2 in the fitting direction to the fitting recess 104 formed in the drawer H. A rib 20m is formed along the fitting direction so as to elastically adhere to the inner surface of the fitting recess 104 with the fitting.

In this embodiment, the mounting portion 2
The ribs 20m are formed on the side outer surface 20c and the rear outer surface 20d at 0 so as to follow the protruding direction of the mounting portion 20 from the upper surface of the substrate portion 20a. The side outer surface 20c has a position close to a corner between the side outer surface 20c and the front outer surface 20b and a position close to a corner between the side outer surface 20c and the rear outer surface 20d. Each of the ribs 20m is formed. Each rib 2
0 m is attached to each of the fitting recesses 104 in the mounting portion 20.
It is configured such that when it is fitted, it is slightly elastically deformed and its protruding surface is pressed against the inner surface of the fitting recess 104.

As a result, in this embodiment, the fitting portion 20 can be fitted into the fitting concave portion 104 without rattling, and the drawer H can be appropriately equipped with the tilt prevention wheel.

In this embodiment, each rib 20m is inclined at the upper end thereof in such a direction that the protruding size of the rib 20m is gradually reduced toward the upper outer surface 20e side of the mounting portion 20. The inclined surface 20n is provided so that the rib 20m thus formed does not have a strong resistance when the mounting portion 20 is fitted into the fitting recess 104.

Further, in this embodiment, as the fitting portion 20 is fitted into the fitting concave portion 104 formed in the drawer H at the upper portion of the fitting portion 20 of the base 2, the fitting concave portion 104 is formed. A fitting portion 20p that fits with the fitted portion 106 formed in the inner back portion is formed.

In this embodiment, the fitting portion 2
0p is configured as a square prismatic fitting protrusion 20q formed so as to protrude from the upper outer surface 20e of the mounting portion 20 on both the left and right sides of the mounting portion 20. Further, the fitted portion 106 is the fitting recess 1
The fitting protrusions 20 are formed so as to be recessed upward from the inner back surface 104d on both left and right sides of 04.
It is configured as a fitting concave portion 106a in which the inner contour shape of the hole is imitated to the outer contour shape of the fitting projection 20q into which q is fitted.

As a result, in this embodiment, by fitting the fitting portion 20p into the fitted portion 106, the mounting portion 20 is fitted into the fitting concave portion 104 without displacement in the front, rear, left and right directions, The drawer H can be appropriately equipped with a tilt prevention wheel.

On the contrary, the fitting portion 20p
Is configured as a hole-shaped fitting recess formed so as to be recessed downward from the upper outer surface 20e of the mounting portion 20, and the fitted portion 106 is projected downward from the inner back surface 104d. It may be configured as a fitting protrusion that is inserted into the fitting portion 20p formed as described above and configured as the fitting recess.

Further, in this embodiment, the roller 1 is provided on the lower surface side of the substrate portion 20a of the base 2.
Bearing portion 21 is formed.

Specifically, in this embodiment,
The bearing portion 21 is configured as a pair of plate-like members that protrude downward from the lower surface side of the base plate portion 20a with a space therebetween to accommodate the roller 1.

Each of the pair of bearings 21 and 21 is provided with a bearing hole 21a, which has a hole diameter larger than the outer diameter of the rotary shaft 10 of the roller 1, in a penetrating state.

The pair of bearings 21, 21 are the drawer H.
The bearing hole 21a is formed along a direction substantially orthogonal to the drawing direction of the drawer H. Therefore, the bearing hole 2 of the bearing portion 21 formed in this way
The roller 1 having the rotary shaft 10 inserted through the la 1 is arranged so that the axis line of the rotary shaft 10 is along a direction substantially orthogonal to the drawing direction of the drawer H.

In this embodiment, the difference between the outer diameter of the rotating shaft 10 of the roller 1 and the hole diameter of the bearing hole 21a is utilized to separate the roller 1 in the axial direction. One of the rotating shafts 10 of the roller 1 is inserted into the bearing hole 21a of the one bearing portion 21 by the slider,
In addition, the base 2 and the roller 1 are integrally formed by injection molding in a state where the other of the rotary shafts 10 of the roller 1 is inserted into the bearing hole 21a of the other bearing portion 21.

As a result, according to this embodiment, the tilt-prevention wheel can be molded with a single mold, and it is not necessary to separately assemble the base 2 side and the roller 1 side. Therefore, the anti-tilt wheel can be provided easily and inexpensively.

Further, in this embodiment, the rotating shaft 10 of the roller 1 is attached to the bearing portion 21 of the base 2.
A sub-bearing hole 21b is formed in a penetrating state so that the inner peripheral surface of the hole extends along an arc of a virtual circle having a diameter substantially equal to the outer diameter of the sub-bearing hole 21a.
In the upper part of the above, the rotary shaft 10 located in the bearing hole 21a is communicated with the bearing hole 21a so as to allow the rotary shaft 10 to enter the auxiliary bearing hole 21b.

Specifically, in the embodiment, in the state where the bearing portion 21 is seen from the direction along the drawing direction of the drawer H, the bearing hole 21a and the bearing hole 21a are formed as described above. The sub-bearing hole 21b communicating with
The rotary shaft 10 is inserted.

When the lower end of the roller 1 is not in contact with the floor surface F or the like, the roller 1
The rotary shaft 10 is located in the bearing hole 21a (FIGS. 11 and 13), and on the other hand, at least when pulling out the drawer H, a force in the forward tilting direction is applied to the drawer storage G. The lower end of the roller 1 is grounded to the floor surface F or the like so that the rotary shaft 10 of the roller 1 enters the sub bearing hole 21b. (Figure 12)

As a result, in this embodiment, in particular, the drawer H is returned to the original storage state from the pulled-out state of the drawer H in which the roller 1 is grounded on the floor surface F or the like to prevent the forward tilt. In pushing back to the state, the inner peripheral surface of the sub-bearing hole 21b in which the inner peripheral surface of the roller 1 is placed along the arc of a virtual circle having a diameter substantially equal to the outer diameter of the rotary shaft 10 of the roller 1 The guide can be rotated without rattling, and this pushing back can be smoothly performed.

In this embodiment, one side is integrally joined to the outer surface of the bearing portion 21 of the roller 1 and the other side is integrally joined to the lower surface of the base plate portion 20a of the base 2. Reinforcing plates 22 each having a substantially triangular shape are provided outside the pair of bearings 21, 21 so that the plate surfaces are along a vertical line passing through the rotation axis 10 line of the roller 1, respectively. The bearing portion 21 side has an appropriate rigidity.

[0065]

EFFECT OF THE INVENTION According to the tilting prevention wheel of the drawer container according to the present invention, the drawer is formed by simply fitting the base mounting portion from below into the fitting recess formed in the lower front portion of the lowest drawer of the drawer container. It can be installed properly with one touch.

Further, a roller which can come into contact with the floor surface or the like and can be rotated when the drawer at the lowest stage is pulled out,
The base for attaching the roller to the drawer can be integrally formed using a plastic material.

[Brief description of drawings]

[Figure 1] Side view of anti-tilt wheel

FIG. 2 is a plan view of the same.

[Figure 3] Bottom view of the same

FIG. 4 is a side view showing the tilt prevention wheel from the left side of FIG.

5 is a side view showing the tilt prevention wheel as viewed from the right side of FIG. 1. FIG.

6 is a sectional view taken along the line AA in FIG.

7 is a sectional view taken along line BB in FIG.

FIG. 8 is an enlarged view of a main part of the tilt prevention wheel.

FIG. 9 is an enlarged view of a main part of the tilt prevention wheel.

10 is a sectional view taken along the line CC in FIG.

FIG. 11 is a side view showing a usage state of the tilt prevention wheel.

FIG. 12 is a side view showing the usage state of the tilt prevention wheel.

FIG. 13 is a side view showing a usage state of the tilt prevention wheel.

FIG. 14 is a bottom view showing the front plate 100 of the drawer H and the anti-tilt wheel separated.

[Explanation of symbols]

H drawer Ha front lower part 1 roller 10 rotation axis 2 base 20 Mounting part 20f engagement part 21 Bearing part 21a Bearing hole 21b Secondary bearing hole 104 Inset recess 105 Engagement part

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kenji Iida             6-1, 1-1, Oimazatominami, Higashinari-ku, Osaka-shi, Osaka             No. KOKUYO Corporation (72) Inventor Hiroyuki Kaneko             6-1, 1-1, Oimazatominami, Higashinari-ku, Osaka-shi, Osaka             No. KOKUYO Corporation (72) Inventor Hiromasa Tanaka             1 184 Maioka-cho, Totsuka-ku, Yokohama-shi, Kanagawa             Nifco Co., Ltd. (72) Inventor Yosuke Ishii             1 184 Maioka-cho, Totsuka-ku, Yokohama-shi, Kanagawa             Nifco Co., Ltd. F term (reference) 3B060 MA15

Claims (5)

[Claims] 1. A tilt-prevention wheel made of plastic, which is attached to a lower part of the front side of the lowermost drawer to prevent the drawer storage body from tilting forward when the drawer is pulled out, and comprises a roller and a base, Each of the rollers has a rotation shaft protruding from both sides thereof, and the base is a mounting portion that is fitted from below into a fitting recess formed in the front lower portion of the drawer, and a bearing hole for the rotation shaft of the roller. , A pair of bearings having through holes a bearing hole that makes the hole diameter larger than the outer diameter of the rotary shaft, and the difference between the outer diameter of the rotary shaft and the hole diameter of the bearing hole is used. hand,
One of the rotary shafts of the rollers is inserted into the bearing hole of one bearing portion and the other of the rotary shafts of the rollers is inserted into the bearing hole of the other bearing portion by the slider separated in the axial direction of the rotary shaft. In this state, the base and the roller are integrally formed by injection molding, and the fitting portion formed in the fitting recess is attached to the mounting portion of the base when the base is fitted into the fitting recess. An anti-tilt wheel for a drawer storage body, characterized in that it is provided with an engaging portion that is elastically engaged with the portion. 2. The anti-tilt wheel for a drawer container according to claim 1, wherein the engaging portion is formed on the drawer front side of the drawer sandwiching a vertical line passing through the rotation axis of the roller. 3. A rib which is elastically adhered to the inner surface of the fitting recess on the side portion of the mounting portion of the base in the direction of fitting into the fitting recess formed in the drawer, as the mounting portion fits into the fitting recess. The anti-tilt wheel of the drawer storage body according to claim 1 or 2, wherein is formed along the fitting direction. 4. A fitting for fitting with a fitted portion formed in an inner back portion of the fitting recess at the upper portion of the fitting portion of the base as the fitting portion is fitted into the fitting recess formed in the drawer. The anti-tilt wheel of the drawer storage body according to claim 1, 2 or 3, wherein a portion is formed. 5. A sub-bearing hole is formed in a penetrating state in the base in which the inner peripheral surface of the hole extends along an arc of a virtual circle having a diameter substantially equal to the outer diameter of the rotary shaft of the roller. The sub-bearing hole is communicated with the bearing hole so that the rotary shaft located in the bearing hole can be inserted into the sub-bearing hole at the upper part of the bearing hole. Claim 1, Claim 2, Claim 3
Alternatively, the anti-tilt wheel of the drawer storage body according to claim 4.