JP2513383Y2 - Lifting shelf - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an elevating shelf for raising and lowering a storage box for storing dishes and the like.

[Conventional technology]

A storage box for storing tableware and the like is usually installed above the sink for convenience of taking in and out and effective use of space. On the other hand, since the space above the sink must be widely used, this storage box is installed at a fairly high position near the ceiling. Therefore, it is very inconvenient that the step must be used to put in and take out tableware and the like.

In consideration of this, recently, so-called elevating shelves, in which the storage box moves up and down, have come to be seen. However, most of the conventional elevating shelves move vertically. On the other hand, there is a step above the back of the sink, and it is common for kitchen utensils such as detergent to stand up there, so this is the case when the elevating shelf is lowered. If you try to stop before hitting this, that is, if you want to secure a space for leaning things here, there is a problem that the storage box cannot be lowered sufficiently.

[Problems to be solved by the device]

In order to solve this problem, Japanese Utility Model Laid-Open No. 60-091041 proposes a parallel link that lowers the storage box diagonally forward. However, since this proposal operates the parallel links manually, it is not easy to raise and lower a storage box that is quite heavy (30 to 40 kg is enough) if it is stored in a fixed amount just by inputting.

For this reason, some gas springs and the like are used to balance the weight, but it is not possible to cope with this if the stored weight changes. On the other hand, if you just want to save labor
It seems that a drive source such as a motor as disclosed in Japanese Patent No. 92729 should be used, but as mentioned before, this part has a ceiling above and a sink below, which is very important. Since it is a narrow space, the space of the drive unit is large in the above-mentioned prior art example, and the storage box of the carton is extremely small. Furthermore, if the drive structure as in the above-mentioned prior art is adopted, the weight of the storage box is directly raised by the drive structure, and a large motor or the like capable of producing a large driving force is required.

The present invention addresses such a problem, and the purpose thereof is to have a compact drive unit,
It is to provide a lifting shelf that can embody a large storage box.

[Means for solving the problem]

Under the above-mentioned problems, the present invention provides a moving frame having a storage box on the front side along a moving path formed between an ascending position immediately before a fixed frame mounted on a wall surface and a descending position at the front lower side. In an elevating rack which is moved up and down by a driving mechanism, a pair of left and right parallel link mechanisms are provided so that the moving path can be erected upright when two L-shaped links are provided up and down between a moving frame and a fixed frame. And the drive mechanism is locked to the fixed frame by unwinding the belt from the rotating portion of the coaxial motor housed in the fixed frame and winding the belt around the roller attached to the moving frame. An elevating shelf characterized by a movable pulley structure, and a movable frame having a storage box in the front, just above the fixed frame that can be attached to a wall surface, etc. In an elevating shelf in which a drive mechanism elevates and lowers along a movement path formed between an ascending position and a lower front lower position, a pair of left and right guide rails are extended obliquely downward from the fixed frame. , At least two rollers, which are guided by the guide rails and roll, are constructed by a guide roller mechanism attached to both side surfaces of a moving frame, and the drive mechanism is composed of a rotating portion of a coaxial motor housed in a fixed frame. The present invention provides an elevator rack characterized by comprising a pulley structure in which a belt is unwound and locked to a roller bearing.

[Action]

By taking the above first and second means, in any case, since the motor as the drive source uses the cylindrical coaxial motor, the space is not required even when it is housed in the fixed frame. It can be small, and the volume of the storage box can be increased accordingly. In particular, in the first means, the parallel link mechanism is an L-shaped link that can stand upright, and the drive mechanism by the coaxial motor has a moving pulley structure, so that the coaxial motor can be further downsized, and the space for the fixed frame is further increased. It can be small.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

Fig. 4 is a cross-sectional view of the interior of this elevator when it is installed above the sink. In short, above sink 1, ceiling 2
This elevating shelf A is installed on the wall surface 3 or the like between them.

The lifting shelf A has a fixed frame 4 fixed to a wall surface 3 or the like,
The movable frame 5 is arranged so as to partially enter the front surface of the fixed frame 4, and a storage boss 6 and the like attached to the front surface of the movable frame 5. Moving frame 5 and storage box 6 attached to it
Is capable of descending diagonally forward and downward with respect to the fixed frame 4 in a fixed trajectory, and this descending position is the withdrawal position and the ascending position is the storage position.

FIG. 1 is a partial sectional side view of the elevator shelf A, FIG. 2 is a front view, and FIG. 3 is a plan view.
Has a thin rectangular parallelepiped framed with shaped steel, etc., and is fixed to the wall surface 3 or the like. Moving frame 5 is fixed frame 4
It is a thinner rectangular parallelepiped with the same horizontal width as
When the storage box 6 is in the storage position, this is arranged so as to enter a part of the front surface of the fixed frame 4. By the way, the left and right widths of the storage box 6 are set to be the same as the fixed frame 4 and the like, and when the storage box 6 is in the storage position, the storage box 6 is attached to the moving frame 5 so as to be at the same height as the fixed frame 4. Preferred (Fig. 1). Two links 7 are provided between the fixed frame 4 and the movable frame 5.
A pair of left and right parallel link mechanisms 7 in which a and 7b are arranged vertically are constructed, and the moving frame 5 can be moved up and down along a moving path 8 regulated by the arm diameter of the parallel link mechanism 7. In addition, this parallel link mechanism 7 is fixed frame 4
Although they are provided on both side surfaces of the moving frame 5, they are both housed in the rear projection plane of the housing box 6 and do not protrude laterally (Fig. 3). Also, this link 7a, 7b
Have a sufficient strength to support the storage box 6 and are each formed in an L-shape, so that they can fit within the depth of the fixed frame 4 without interfering with the upper and lower link axes. Therefore, the links 7a and 7b do not have to be attached to the side surface of the storage box 6, and the width of the storage box 6 can be made larger than the width of the fixed frame 4 and the like. Further, when the storage box 6 is in the storage position, the movable frame 5 partially enters the fixed frame 4, but this is allowed by the structure in which the links 7a and 7b are both stored upright ( (Fig. 1).

An elongated cylindrical coaxial motor 9 is horizontally installed in a space above the fixed frame 4 (a portion where the moving frame 5 does not enter). Here, the coaxial motor 9 is a motor used for elevating and lowering a shutter, etc. The stator part rotates when the rotor part is fixed. It has a small diameter. In addition, the deceleration mechanism and limit switches for stopping rotation and forward / reverse rotation are built in, so there is no need to provide such an external device. One end of a thin flat belt 10 made of steel or resin is fixedly attached to the rotating portion 9a of the coaxial motor 9, and the other end unwound from the flat belt 10 is attached to the roller 11 which is also horizontally installed on the upper end of the moving frame 5 or the like. It is wound and locked to a locking member 12 provided slightly below the coaxial motor 9 of the fixed frame 4. As a result, the belt 10 and the rollers 11 form a moving pulley structure, and the pulling up of the storage box 6 is sufficient with a small force. The belt 10 has a rotating portion 9a (stator).
However, it is preferable from the viewpoint of performance and cost to provide two widths of about 50 mm symmetrically with respect to the center (Fig. 2). Further, when the above-mentioned material is used as the material of the belt 10, it is resistant to elongation and change with time, and the left-right balance based on one load is not lost, so that the stop position and the like do not change. further,
Since it is thin and has sufficient strength, the winding diameter does not increase,
There is an advantage that almost constant torque can always be obtained.

As described above, when it is desired to lower the storage box 6 in the storage position to the storage / removal position, the switch is operated to give the coaxial motor 9 a downward rotation. Then, the belt 10 is unwound, and the storage box 6 is borne by its own weight.
It descends on the moving path 8 formed by. When the coaxial motor 9 is lowered to a predetermined position for taking in and out, the coaxial motor 9 is stopped by the action of a built-in limit switch or the like, and the storage box 6 is stopped. Next, if it is desired to raise the storage position, the switch is operated to give the coaxial motor 9 an upward rotation. Then, the belt 10 is wound up, and the storage box 6 rises on the movement path 8. When the storage box 6 is moved up to the predetermined storage position, the coaxial motor 9 is stopped by the action of the limit switch, and the movement of the storage box 6 is stopped accordingly. In this case, the storage box 6 is moved up and down by the parallel link mechanism 7 while always maintaining a vertical normal state.

By the way, when the storage box 6 is near the storage position,
The center of gravity of the storage box 6 and the base axes of the links 7a, 7b approach each other to reduce the downward moment, and the eccentric load of the storage box 6 (a backward force is generated in the lower link 7b) causes parallel links. Since the function of the mechanism 7 for maintaining the posture of the storage box 6 is deteriorated and the initial movement of the downward movement of the storage box 6 may lack smoothness, the following initial motion assist mechanism may be provided. FIG. 8 is a partial side view showing an example thereof. Pinions 7aa and 7ba are formed in the vicinity of the link shafts of the links 7a and 7b, and a rack 13 that meshes with the pinions 7a and 7ba is attached to the links 7a. The links 7a and 7b are forcibly moved forward by the weight of the storage box 6 while restricting the movement amounts of 7 and 7b to be the same. FIG. 9 is a partial side view showing another example,
The fixed frame 4 is provided with a piston 15 that is elastically urged forward by a spring 14, and the eccentric load of the storage box 6 is canceled by the elastic force of the spring 14.

FIG. 5 is a partial cross-sectional side view of another lift shelf B, FIG. 6 is a front view, and FIG. 7 is a plan view.
The guide rails 16a on both sides of the fixed frame 4
The guide roller mechanism 16 is provided with at least two upper and lower rollers 16b rolling on the guide rails 16a on both side surfaces of the moving frame 5, respectively. Therefore, the moving path 8 is the moving locus of the roller 16b. Here, the guide rail 16a and the moving frame 5
Since it should not interfere with the storage box 6, only the guide rail 16a is extended to the side of the moving frame 5 or the like. Further, in this example, although the belt 10 unwound from the coaxial motor 9 has a pulley structure in which it is directly engaged with the roller 11 provided on the moving frame 5, it is wound around the roller 11 and fixed frame 4 Of course, it is possible to adopt a moving pulley structure that is fixed to the etc.

[Effect of device]

As described above, since the present invention has been described above, the following effects can be expected.

i) Since the elevating and lowering of the storage box is performed by the cylindrical coaxial motor, when the storage box is housed in the fixed frame, the space can be reduced and the volume of the storage box can be increased accordingly.

ii) When forming the moving path of the moving frame by the parallel link mechanism, two L's on the upper and lower sides can stand upright when they are set up.
If the parallel link mechanism is composed of letter-shaped links, the space can be reduced when it is housed in the fixed frame. Further, if the drive mechanism for moving the moving frame is configured by a moving pulley structure, the load on the coaxial motor is reduced, and the coaxial motor can be further downsized.

iii) If the movement path is configured by the guide rail mechanism, the amount of forward protrusion and the vertical height of the storage box can be changed by changing the inclination angle of the guide rail.

[Brief description of drawings]

Fig. 1 is a partial sectional side view of an elevator rack, Fig. 2 is a front view, Fig. 3 is a plan view, and Fig. 4 is an indoor sectional view when the elevator rack is installed above a sink. Is a partial sectional side view of another lifting rack, FIG. 6 is a front view, FIG. 7 is a plan view, FIG.
FIG. 9 is a partial sectional view of the initial motion assisting mechanism of the parallel link mechanism. (Code) 3 ... Wall surface 4 ... Fixed frame 5 ... Moving frame 6 ... Storage box 7a ... Link 7b ... Link 7 ... Parallel link mechanism 8 ... Moving path 9 ... Coaxial motor 9a ... Coaxial motor rotating part 10 ... Belt 11 ... Roller 16 ... Guide rail mechanism 16a ... Guide rail 16b ... Roller

Claims (2)

(57) [Scope of utility model registration request] 1. A movable frame (5) having a storage box (6) on its front surface is formed between a raised position immediately before a fixed frame (4) mounted on a wall surface (3) and a lowered position at the front lower side. In an elevator rack that raises and lowers the moving path (8) in a normal posture by a drive mechanism, the moving path (8) is provided between the moving frame (5) and the fixed frame (4) in two vertical directions. L-shaped links (7a), (7
When the b) is made upright, a pair of left and right parallel link mechanisms (7) are provided so that both can stand upright, and the drive mechanism is housed in a fixed frame (4). 9) Rotating part (9a) to belt (10)
An elevating shelf comprising a moving pulley structure in which a roller (11) attached to a moving frame (5) is unwound and wound around a roller (11) and locked to a fixed frame (4). 2. A movable frame (5) having a storage box (6) on its front surface is formed between a raised position immediately before a fixed frame (4) mounted on a wall surface (3) and a lowered position at the front lower side. In the elevating shelf for moving up and down on the above-mentioned moving path (8) in a normal posture by a drive mechanism, the moving path (8) is provided with a pair of left and right guide rails (16a) extending obliquely downward from the fixed frame (5). Guide rail (1
At least two rollers (16b) guided by 6a) are mounted on both side surfaces of the upper and lower moving frames (5) by a guide roller mechanism (16), and the drive mechanism is fixed frame (6). An elevating shelf characterized by comprising a pulley structure in which a belt (10) is unwound from a rotating part (9a) of a coaxial motor (9) housed in 4) and is locked to a shaft of a roller (11).