JP2001231647A - Elevating mechanism of storage body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize the whole of a device by employing a cylinder expanding and contracting elastically under hydraulic pressure as a spring for recovery and installing a mechanism of a rack and a pinion interlocked with a plunger of the cylinder between the cylinder and a link. SOLUTION: A storage body 2 is installed through the intermediary of the rotary links 4, 4 in a manner such as to be able to move forward and downward. The links 4, 4 are mounted in a manner such as to be able to rotate within the range of prescribed angles on the internal surfaces of right and left side plates 1a, 1a of a frame 1. The cylinder 5, which is provided with the plunger 5a protruding elastically under the hydraulic pressure, is mounted in an attitude such as to steer its extendable and contractible direction vertically on either of the side plates 1a, 1a. A rack 5b is mounted on the side surface of the plunger 5a, and the pinion 6 engaging with the rack 5b is mounted coaxially on a rotary shaft 4a on the side of the side plate 1a of any of the links 4, 4 and integrally on the link 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting mechanism for a storage body such as a storage box which is installed at a high place in a kitchen or the like and is pulled out obliquely downward and forward when necessary.

[0002]

2. Description of the Related Art Heretofore, there have been known an elevating mechanism of this type, which is of a type which can be moved up and down by electric power, and of a type which makes a large swing forward and downward by using a swing arm. However, these known devices have a complicated mechanism and are costly. In particular, the swing type device incorporates a return elastic machine in which a spring is wound around a rotating shaft portion of an arm.
Since a considerable amount of force is required for lifting, in order to obtain a satisfactory return force, the size of the armature mechanism is increased and the cost is increased, and the space for installation is bulky and the appearance and storage space are impaired. There was a problem.

[0003]

SUMMARY OF THE INVENTION Therefore, the present invention employs a cylinder which elastically expands and contracts by fluid pressure as a returning elastic machine, and further comprises a mechanism for moving a rack and a pinion interlocking with a plunger of the cylinder between a link. The purpose of the present invention is to reduce the size of the entire apparatus by incorporating it into the apparatus, and to solve the above-mentioned conventional disadvantages.

[0004]

In order to achieve the above object, the present invention takes the following technical measures. That is, in the lifting mechanism of the storage body according to the present invention, via the rotating links 4, 4 which are rotatably attached to the inner surfaces of the left and right side plates 1 a, 1 a of the frame 1 within a predetermined angle range. A cylinder 5 having a plunger 5a which is elastically protruded by fluid pressure is attached to one of the side plates 1a, 1a. A rack 5b is provided on a side surface of 5a, and a pinion 6 meshing with the rack 5b is provided.
Is a rotating shaft 4a on the side plate 1a side of any of the rotating links 4.
The plunger 5a is provided coaxially with the rotary link 4, and the plunger 5a is provided with the cylinder 5 so as to constantly and elastically lift the housing 2 through the rack 5b, the pinion 6, and the rotary link 4. The structure is urged by the fluid pressure of

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS When the storage body 2 moves to the lowest position with the rotation of the rotation links 4, the total weight of the storage body 2 (the weight of the storage body and the average load of the articles stored in the storage body 2). Is preferably set in advance so that the lifting force of the cylinder 5 is substantially balanced with the lifting force of the cylinder 5. Thus, the storage body 2 can be stopped at the lowered position, and the lifting operation can be performed lightly by the restoring force of the plunger 5a when returning to the raised position.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a lifting mechanism according to the present invention; FIG. In the figure, reference numeral 1 denotes a frame such as furniture having an open front surface, and a storage body 2 is stored between the left and right fixed side plates 1a, 1a. The fixed side plate 1a is attached to an upper portion of a kitchen wall A, for example, like a top bag.

The housing 2 is mounted via a four-point rotating link mechanism formed by a pair of rotating links 4, 4 parallel to the inner surfaces of the fixed side plates 1a, 1a. The rotating link 4 is attached at one end thereof to a mounting plate 3 fixed to the side plates 1a, 1a so as to be swingable about a rotating shaft 4a as a fulcrum, and at the other end via a pivot 4b.
Is pivotally supported by a mounting plate 7 fixed to the side surface. With such a configuration, the storage body 2 can be moved obliquely downward and forward from the raised storage position in FIG. 1 by the rotation of the rotation links 4 and 4.

Further, a fluid pressure cylinder 5 is mounted on the inner surface of the side plate 1a with its expansion and contraction direction directed up and down. The cylinder 5 is filled with a pressure fluid such as a hydraulic pressure, and constantly urges the plunger 5a elastically in the protruding direction. The plunger 5a extends downward.

A rack 5b is provided on a side surface of the plunger 5a of the cylinder 5, and a pinion 6 meshing with the rack 5b is coaxially and rotatable with a rotation shaft 4a on the side plate 1a of the lower rear rotation link 4. It is provided integrally with the moving link 4. When the storage body 2 is pulled down to the lower position, the pinion 6 rotates together with the rotation of the rotation link 4 to raise the plunger 5a against the fluid pressure. Reference numeral 8 denotes a handle used when the storage body 2 is pulled out, and reference numeral 9 denotes the cylinder 5 which is connected to the side plate 1a.
Is a receiving plate slidably in contact with a surface of the plunger 5a opposite to the surface on which the rack 5b is provided, and prevents the plunger 5a from swinging.

In the above configuration, when the storage body 2 is pulled down from the raised storage position in FIG. 1, the rotating links 4, 4 rotate to move the storage body 2 to the lowered position as shown in FIG. Can be done. During this movement, the rotation link 4
The pinion 6 rotates together with the rotation of the cylinder 5 to raise the plunger 5a against the fluid pressure in the cylinder 5. Therefore, when the container 2 is lifted, the compressed fluid pressure presses the plunger 5a downward to urge the pinion 6 in the container lifting direction, whereby the container 2 can be lifted with a light force.

When the storage body 2 is moved to the lowermost position with the rotation of the rotating links 4, the total weight of the storage body 2 (the total weight of the storage body and the average load of the articles stored therein) and the cylinder Preferably, the force of the cylinder 5 is set in advance so that the lifting force of the cylinder 5 is substantially balanced. Thus, the storage body 2 can be stopped at a lowered position in a well-balanced manner.

When the storage body 2 moves to the lowermost position with the rotation of the rotary links 4, the ribs 11 provided on the rotary links 4 contact the stoppers 12 provided on the fixed side plate 1a to rotate. It is preferable to restrict the rotation of the moving link 4. Thereby, the lowest position of the storage body 2 can be set accurately.

In the above embodiment, the pair of rotating links 4, 4 are provided in the upper and lower stages, respectively. However, as shown in FIG. The storage body 2 may be supported by a dynamic link. Further, as shown in FIG. 5, it is also possible to support the storage body 2 with a pair of upper and lower rotating links 4, 4.

Although the embodiments of the present invention have been described above, the present invention is not necessarily limited to the structures of these embodiments. For example, in the above embodiment, the box body is shown as the form of the storage body 2, but it may be a shelf plate or a hanger rod. Also, the direction of the cylinder 5 is not specified downward. When the plunger 5a returns, the rack 5a
The direction of the cylinder 5 may be any direction as long as the pinion 6 that engages rotates the housing 2 in the lifting direction. In addition, the present invention can be carried out by appropriately modifying it within the scope having the constituent features, achieving the object of the present invention, and achieving the following effects.

[0015]

As described above, the present invention utilizes a hydraulic cylinder as a lifting support force for the storage body, and transmits the force in the linear direction of the plunger to the rotation link via the rack and the pinion. As a result, the restoring force of the cylinder can be reliably and effectively transmitted to the oscillating rotating link, which allows the storage body to be lifted smoothly with a light force, and the mechanism is simplified and failures occur. There is an effect that the number is small and maintenance is easy.

[Brief description of the drawings]

FIG. 1 is a side view showing one embodiment of a lifting mechanism according to the present invention, showing a state in which a storage body is stored.

FIG. 2 is a side view similar to FIG. 1 showing a state in which a storage body is lowered.

FIG. 3 is a perspective view showing an embodiment to which a lifting mechanism according to the present invention is attached.

FIG. 4 is a side view similar to FIG. 2, showing another embodiment of the present invention.

FIG. 5 is a side view similar to FIG. 2 and showing still another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame 1a Fixed side plate 2 Storage body 4 Rotating link 4a Rotating shaft 5 Cylinder 5a Plunger 5b Rack 6 Pinion

Claims (1)

[Claims] 1. A rotary link (4), which is rotatably mounted within a predetermined angle range on inner surfaces of left and right side plates (1a) and (1a) of a frame (1). The storage body (2) is mounted so as to be movable forward and downward, and the side plate (1
A cylinder (5) having a plunger (5a) elastically protruded by fluid pressure is attached to one of (a) and (1a), and a rack (5b) is provided on a side surface of the plunger (5a). The pinion (6) meshing with the rack (5b) is coaxial with the rotation shaft (4a) on the side plate (1a) side of any of the rotation links (4) and integrated with the rotation link (4). The plunger (5a) is provided with a rack (5b), a pinion (6), and a rotating link (4).
The lifting mechanism of the storage body which is urged by the fluid pressure of the cylinder (5) so as to always elastically lift the storage body (2) in the ascending direction via the cylinder.