JP4156937B2 - Elevating device for shelf member - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lifting / lowering device for a shelf member, and more particularly to a lifting / lowering device for a vertically movable shelf member used in a tableware disinfection storage or a cold / hot storage for storing articles such as tableware.
[0002]
[Prior art]
For example, in a tableware disinfection storage, when tableware is taken in and out of each shelf member fixedly arranged in multiple stages in the box body, the tableware is taken in and out of the shelf member at a high position or the shelf member at a low position. This is a cumbersome and cumbersome task, with the use of a lip or with the waist bent. Therefore, the shelf members configured to be movable up and down are connected to each other with a flexible wire, and the wire connected to the uppermost shelf member is rolled up or fed out by an elevating mechanism, so that the shelf member can be used as a tableware. Some have been proposed to move to a height that is easy to put in and out. However, in the configuration in which all the shelf members are connected to each other with wires, the shelf member positioned lower than the middle stage in the state where the highest shelf member is lifted up to the uppermost position is a position where the workability is good. However, the operator was forced to take a bad working posture such as bending his / her waist when taking in and out the tableware with respect to the shelf member positioned below.
[0003]
In order to cope with the above-mentioned problems, a plurality of shelf members arranged in the shelf frame so as to be movable up and down are divided into an upper shelf group and a lower shelf group, and the upper and lower shelf groups are moved up and down separately. There is (for example, Patent Document 1). In the lifting device disclosed in Patent Document 1, the upper shelf group is connected to each other with a dedicated shelf wire rope, and the upper shelf wire connected to the uppermost shelf member in the upper shelf group is a box body. It connects with the predetermined position of the endless chain arrange | positioned at the upper part, and an upper shelf group is moved up and down by the forward / reverse rotation of this endless chain. On the other hand, the lower shelf group is connected to each other by shelf columns, and the lower shelf wire connected to the uppermost shelf member in the lower shelf group is engaged with and disengaged from the hook provided in the endless chain. Connect to possible wiring shaft. Then, by engaging the hook that moves integrally with the endless chain with the wiring shaft, the lower shelf group can be raised to a height position with good workability in a state where the stacked upper shelf group is placed. It is configured as follows.
[0004]
In addition, the hoisting devices connected to all the shelf members are connected to the corresponding hoisting devices disposed in the upper part of the shelf frame, and the auxiliary hoisting devices connected to the shelf members at the middle position are connected to the auxiliary hoisting device, and the motor By switching between a state where the hoisting device is rotated and a state where the auxiliary hoisting device is rotated by the electromagnetic clutch disposed in the rack, the shelf member below the middle stage can be raised to a height position with good workability. Some (for example, Patent Document 2).
[0005]
[Patent Document 1]
Japanese Examined Patent Publication No. 7-84242
[Patent Document 2]
Japanese Patent No. 2662837
[0006]
[Problems to be solved by the invention]
However, the lifting device disclosed in Patent Document 1 has a problem that special parts are required and the number of parts is increased, the structure becomes complicated, the assembly and maintenance become complicated, and the manufacturing cost increases. Also in the lifting device disclosed in Patent Document 2, an electromagnetic clutch for switching power transmission from the motor, a winding device that moves all the shelf members up and down, and an auxiliary winding device that moves the lower shelf member up and down Is required separately, increasing the number of parts and increasing manufacturing costs. Further, like the lifting device disclosed in Patent Document 1, there is a problem that the structure becomes complicated and the assembly and maintenance become complicated.
[0007]
OBJECT OF THE INVENTION
The present invention has been proposed in view of the above-mentioned problems inherent in the prior art described above, and has been proposed to suitably solve this problem. The shelf member is moved to a height position with good workability with a simple configuration. An object of the present invention is to provide a possible lifting device for a shelf member.
[0008]
[Means for Solving the Problems]
In order to overcome the above-mentioned problems and achieve the intended purpose suitably, the lifting and lowering device for a shelf member according to the present invention comprises:
An upper shelf member and a lower shelf member that are arranged inside the shelf frame and are movable up and down;
A plurality of endless cords arranged in the shelf frame and circulating in the vertical direction;
An upper through hole that is established in the upper engagement portion provided in the upper shelf member, and through which one linear traveling portion that travels in the vertical direction in each endless cord,
A lower through hole that is established in a lower engagement portion provided in the lower shelf member and through which the other straight traveling portion that travels in the vertical direction in each endless cord body passes,
Arranged in each endless cord, When running the endless cord so that one straight running part moves upward Engage with the upper engagement portion of the upper shelf member from below, In this engaged state An upper suspension that moves the upper shelf member up and down by traveling in the forward and reverse directions of the endless cord;
Arranged in each endless cord, When running the endless cord so that the other straight running part moves upward Engage with the lower engaging portion of the lower shelf member from below, In this engaged state A lower suspension tool that moves the lower shelf member up and down by traveling in the forward and reverse directions of the endless cord,
The upper hanger and the lower hanger correspond to the upper hanger and the lower hanger in a state where the upper hanger and the lower hanger are not engaged with the upper engaging portion and the lower engaging portion, respectively. It is arrange | positioned at the said endless cord so that it may be located under an engaging part and a lower engaging part It is characterized by that.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, a preferred embodiment of the lifting / lowering device for a shelf member according to the present invention will be described below with reference to the accompanying drawings.
[0010]
As shown in FIG. 1, a tableware disinfection storage (storage) 10 in which the shelf member lifting apparatus according to the embodiment is adopted includes a plurality of upper shelf members 12 inside a heat insulation box 11 having a heat insulation structure forming a shelf frame. The plurality of lower shelf members 13 are arranged to be movable up and down in an up-and-down relationship, and each of the shelf members 12 and 13 is configured to be moved up and down by an elevating device 14 described later. A heat insulating door (not shown) that closes an opening formed in the heat insulating box 11 so as to be openable and closable is disposed on the front surface of the heat insulating box 11, and the shelf members are arranged through the openings. Articles M such as tableware for 12, 13 and a rack in which the tableware is stored are taken in and out. In addition, hot air is circulated and supplied into the inside of the heat insulating box 11 by a heating device (not shown), and the tableware and the like placed on the shelf members 12 and 13 are heated to be disinfected and dried.
[0011]
A machine room 15 is defined above the heat insulating box 11, and a main part of the lifting device 14 is disposed in the machine room 15. That is, as shown in FIG. 2, a pair of drive shafts 16 and 17 extending in the left-right direction (width direction) are rotatably disposed in a parallel state at positions separated from the front and rear of the machine room 15. The front drive sprockets 18 and 18 are disposed so as to rotate integrally with the left and right shaft ends of the front drive shaft 16 located on the front side, and on the left and right shaft ends of the rear drive shaft 17 located on the rear side. The rear drive sprockets 19, 19 are arranged to rotate integrally. Further, front and rear driven sprockets 20, 20, 21, and 21 are rotatably disposed at lower positions inside the heat insulating box 11 corresponding to the front and rear drive sprockets 18, 18, 19, and 19, respectively. A front endless chain (endless cord) 22 for raising and lowering is wound around each front drive sprocket 18 and front driven sprocket 20 corresponding to the top and bottom on the front side, and each rear drive sprocket corresponding to the top and bottom on the rear side. 19 and a rear driven sprocket 21 are wound around a rear endless chain (endless cord) 23 for raising and lowering.
[0012]
In the machine room 15, a gear motor 24 is disposed between the front and rear drive shafts 16 and 17 as a drive motor that can rotate forward and backward, and is disposed so as to rotate integrally with an output shaft 24 a of the motor 24. A first drive chain 27 is wound between the first sprocket 25 and a second sprocket 26 arranged to rotate integrally with the front drive shaft 16. A third sprocket 28 is disposed on the front drive shaft 16 so as to rotate integrally. The third sprocket 28 and a fourth sprocket 29 disposed so as to rotate integrally with the rear drive shaft 17 Between these, the second drive chain 30 is wound. That is, when the gear motor 24 is rotated forward and backward, the front and rear drive shafts 16 and 17 are rotated forward and backward in the same direction, and thereby the four extending in the vertical direction at the inner four corners of the heat insulating box 11 are obtained. The endless chains 22, 22, 23, 23 for raising and lowering are configured to circulate in the same direction. In the embodiment, the case where the first linear traveling unit (one linear traveling unit) that is positioned on the front side and travels in the vertical direction in each endless chain 22 and 23 moves upward is defined as forward rotation and is positioned on the rear side. A case where the second linear traveling unit (the other linear traveling unit) traveling in the vertical direction moves upward is referred to as reverse rotation.
[0013]
Each of the endless chains 22 and 23 for raising and lowering is provided with a number of upper suspension members 31 (four in the embodiment) corresponding to the number of the upper shelf members 12 spaced apart by a predetermined distance in the traveling direction. And are configured to move together. In addition, in an Example, regarding the upper hanger 31, it distinguishes with the 1st upper hanger 31A, the 2nd upper hanger 31B, the 3rd upper hanger 31C, and the 4th upper hanger 31D in order from the upper side in FIG. To do. And these four hanging tools 31A, 31B, 31C, 31D are set so that each has a different shape or size. For example, as shown in FIG. 3, the first upper suspender 31 </ b> A positioned at the top in FIG. 1 is positioned at a lower position of the pair of linear plate members spaced apart in the width direction, whereas the longitudinal dimension is short. As shown in FIG. 4, the second upper hanger 31 </ b> B has a long longitudinal dimension of a pair of linear plate members that are separated in the width direction. Further, as shown in FIG. 5, the third upper hanger 31C located in the lower part has a pair of U-shaped plate members spaced apart in the width direction and the front and rear dimensions thereof are short. As shown in FIG. 6, the fourth upper hanger 31 </ b> D that is positioned has a long longitudinal dimension of a pair of U-shaped plate members that are spaced apart in the width direction. The first upper suspension tool 31A, the second upper suspension tool 31B, the third upper suspension tool 31C, and the fourth upper suspension tool 31D disposed in the four endless chains 22, 22, 23, and 23 correspond to each other. It is set so that the four (same type) upper suspenders 31 face the same horizontal level, and as described later, the four upper suspenders 31 support the four corners of the corresponding upper shelf members 12 so as to move up and down. Composed.
[0014]
The gear motor 24 is controlled by a control means (not shown) based on signals from a sensor for detecting the positions of the upper and lower shelf members 12 and 13 and a rotation detector for detecting the rotation speed of the motor 24. When the article M is put in and out, the upper and lower shelf members 12 and 13 arranged in the heat insulation box 11 are set to stop at a preset put-in and put-out position where the preset work can be easily performed. .
[0015]
In the embodiment, the upper shelf member 12 disposed inside the heat insulating box 11 is provided in four stages in the vertical direction, and in order from the upper side, the first upper shelf member 12A, the second upper shelf member 12B, and the third upper shelf member 12C. The lower shelf member 13 is provided in three upper and lower stages, and in order from the upper side, the first lower shelf member 13A, the second lower shelf member 13B, and the third lower shelf member 13D. A distinction is made with 13C. The shapes of the upper shelf members 12 are the same. For example, if the first upper shelf member 12A is taken as an example, as shown in FIG. 7, a plurality of vertical members and cross members are combined to form a substantially planar shape. . At both ends in the width direction of the first upper shelf member 12A, both first straight travels in the front and rear endless chains 22 and 23 arranged in a side-by-side relationship on each side of the first upper shelf member 12A are provided. Upper engaging portions 32 and 32 projecting outward are provided so as to be separated from each other in the front-rear direction by the separation dimension of the portions. Each upper engagement portion 32 is provided with an upper through-hole 33 through which the first straight traveling portion of the front and rear endless chains 22 and 23 passes. When the endless chains 22 and 23 circulate, the first straight traveling is performed. The portion passes through the upper through-hole 33 up and down. As for the upper through hole 33, the first upper through hole 33A, the second upper through hole 33B, and the third upper through hole are sequentially arranged from the upper side corresponding to the upper shelf members 12A, 12B, 12C, and 12D. The holes 33C and the fourth upper through holes 33D are distinguished and referred to.
[0016]
The upper through-hole 33 is set to have a different shape or size for each upper shelf member 12A, 12B, 12C, 12D. That is, the first upper through-hole 33A in the first upper shelf member 12A located at the uppermost position allows passage of the first upper suspension tool 31A disposed in the endless chains 22 and 23 for raising and lowering, as shown in FIG. In a state where the shape or size is not allowed and the first upper suspension 31A is engaged with the upper engagement portion 32 from below, the first straight traveling portion of the endless chains 22, 23 is moved to the first upper suspension. When 31A moves up and down, the first upper shelf member 12A is moved up and down. Further, as shown in FIG. 4, the second upper through hole 33B in the second upper shelf member 12B located below the first upper shelf member 12A is a second upper suspension member disposed in the endless chains 22 and 23 for raising and lowering. The first linear travel portion in the endless chains 22 and 23 is set in a shape or dimension that does not allow the passage of the tool 31B, and the second upper suspension tool 31B is engaged with the upper engagement portion 32 from below. When the second upper suspending tool 31B moves in the vertical direction, the second upper shelf member 12B is moved up and down. However, the second upper through hole 33B is set so as to allow passage of the first upper suspension tool 31A, and the first upper suspension tool 31A is separated from the upper engagement portion 32 of the first upper shelf member 12A and is endlessly changed. When moving the first straight traveling portion 22 and 23 downward, the first upper suspension tool 31A does not engage the upper engagement portion 32 of the second upper shelf member 12B, and the second upper through hole 33B is not engaged. It can be passed.
[0017]
As shown in FIG. 5, the third upper through hole 33C in the third upper shelf member 12C positioned below the second upper shelf member 12B is a third upper suspension tool disposed in the endless chains 22 and 23 for raising and lowering. The first linear travel portion in the endless chains 22 and 23 is set to a shape or size that does not allow the passage of 31C, and the third upper suspension 31C is engaged with the upper engagement portion 32 from below. When the 3 upper hanger 31C moves in the vertical direction, the third upper shelf member 12C is moved up and down. However, the third upper through hole 33C is set to allow passage of the first upper suspension tool 31A and the second upper suspension tool 31B, and the first upper suspension tool 31A and the second upper suspension tool 31B correspond to each other. When the first upper traveling member 12A and the second upper shelf member 12B are moved away from the upper engaging portion 32 of the first upper shelf member 12B and moved downward in the first linear traveling portion of the endless chains 22, 23, the first upper suspension member 31A and the second upper suspension member 31A The upper suspension tool 31B can pass through the third upper through hole 33C without engaging with the upper engagement portion 32 of the third upper shelf member 12C.
[0018]
Further, the fourth upper through hole 33D in the lowermost fourth upper shelf member 12D positioned below the third upper shelf member 12C is provided in the endless chains 22 and 23 for raising and lowering as shown in FIG. The fourth upper shelf member 12D is set in a shape or size that does not allow the passage of the fourth upper suspension tool 31D, and the fourth upper suspension tool 31D moves up and down the first straight traveling portion in the endless chains 22 and 23. Is moved up and down. However, the fourth upper through hole 33D is set so as to allow passage of the first upper suspension tool 31A, the second upper suspension tool 31B, and the third upper suspension tool 31C. The first straight traveling in the endless chains 22, 23 is spaced apart from the upper engaging portions 32 of the first upper shelf member 12A, the second upper shelf member 12B, and the third upper shelf member 12C to which the suspension 31B and the third upper suspension member 31C correspond. When the portion is moved downward, the first upper suspension 31A, the second upper suspension 31B, and the third upper suspension 31C are engaged with the upper engagement portion 32 without engaging with the upper engagement portion 32 of the fourth upper shelf member 12D. 4 can pass through the upper through-hole 33D.
[0019]
That is, the corresponding upper through-holes 33A, 33B, 33C, 33D opened in each upper shelf member 12A, 12B, 12C, 12D are the upper through-hole 33 positioned at the upper level and the upper through-hole 33 positioned at the lower level. To set different shapes or dimensions. Further, the upper suspension tools 31A, 31B, 31C, and 31D corresponding to the upper shelf members 12A, 12B, 12C, and 12D engage with the upper engagement portions 32 of the corresponding upper shelf members 12 and are positioned below them. The upper through hole 33 of the upper shelf member 12 is set so as to be able to pass through, and the upper and lower upper suspension members 33, 33 from the state where the four upper shelf members 12A, 12B, 12C, 12D are stacked on each other (see FIG. 11). Are separated from each other by the separation length of the upper shelf members 12A, 12B, 12C, 12D of the respective stages (see FIGS. 14 and 15).
[0020]
The three lower shelf members 13 have the same basic shape, and as shown in FIGS. 8 and 9, a plurality of vertical members and cross members are combined to form a substantially rectangular plane, The lower shelf members 13, 13 opposed to each other in the vertical direction are connected to each other at the four corners by shelf columns 34 as connection members. That is, the three lower shelf members 13 are configured to move up and down while maintaining a state where they face each other in parallel with being separated by the height of the shelf column 34. At both ends in the width direction of the first lower shelf member 13A positioned at the uppermost position in the lower shelf group, both second linear travel portions of the front and rear endless chains 22 and 23 disposed in a parallel relationship are provided. Lower engaging portions 35 and 35 are provided so as to protrude outward in the front-rear direction by a distance dimension. Each lower engagement portion 35 is provided with a lower through hole 36 through which the second straight traveling portions in the front and rear endless chains 22 and 23 pass. When the endless chains 22 and 23 circulate, the second straight traveling is performed. The portion is configured to pass vertically through the lower through hole 36. In the embodiment, the two lower shelf members 13B and 13C that are connected to the lower portion of the first lower shelf member 13A via the shelf column 34 are different types of different lower shelf members that do not include the lower engaging portion. ing.
[0021]
As shown in FIG. 10, the lower through hole 36 in the first lower shelf member 13A is set to a shape or size that does not allow passage of the fourth upper suspension 31D disposed in the endless chains 22 and 23 for raising and lowering. Is done. Further, as shown in FIG. 1, the lower shelf group is regulated at the lowermost position by a stopper 37 disposed at an appropriate position inside the heat insulating box 11, and the lower shelf group 13A at this time has a lower engagement. The height position of the joint portion 35 is set so as to be positioned above the lower curved traveling portion in the endless chains 22 and 23. That is, the fourth upper suspension 31 </ b> D that moves the second linear traveling unit upward through the curved traveling unit after moving the first linear traveling unit of the endless chains 22, 23 downward with respect to the lower engaging unit 35. The first lower shelf member 13A, that is, the lower shelf group can be moved upward by engaging from below. As described above, in the embodiment, the fourth upper suspending tool 31D that moves the fourth upper shelf member 12D up and down also serves as the lower suspending tool that moves the first lower shelf member 13A (upper shelf group) up and down.
[0022]
In addition, each lower engaging part 35 provided in 13 A of 1st lower shelf members is provided in the position where each upper suspension tool 31 which moves below the 1st linear running part of the said endless chains 22 and 23 does not interfere. . Further, as shown in FIG. 11, in the state where the four upper shelf members 12 are stacked on the first lower shelf member 13A in the lower shelf group positioned at the lowermost position regulated by the stopper 37, The suspension 31A is positioned below the fourth upper shelf member 12D, and the fourth upper suspension 31D is set to face the first lower shelf member 13A. From this state, the endless chains 22 and 23 are rotated forward or By reversing, the vertical movement of either the upper shelf group or the lower shelf group is performed. That is, when the upper suspending members 31A to 31D are engaged with the upper engaging portions 32 of the corresponding upper shelf members 12A to 12D to move the upper shelf members 12A to 12D up and down, they function as the lower suspenders. The fourth upper suspension tool 31D does not engage with the lower engagement portion 35 of the first lower shelf member 13A, and the fourth upper suspension tool 31D engages with the lower engagement portion 35 of the first lower shelf member 13A. When the first lower shelf member 13A is moved up and down, the upper suspension members 31A to 31D and the corresponding upper shelf members 12A to 12D are not engaged with the upper engagement portions 32, so that the upper suspension members 31A to 31D are not engaged. Tools 31 </ b> A to 31 </ b> D are disposed in the endless chains 22 and 23.
[0023]
[Effect of the embodiment]
Next, the operation of the lifting device for the shelf member according to the embodiment will be described below. It should be noted that the articles M such as tableware are not placed on all the shelf members 12 and 13, and the lower shelf group is positioned at the lowermost portion regulated by the stopper 37 as shown in FIG. It is assumed that four upper shelf members 12 are stacked on the shelf member 13A. Further, the position of the shelf member that can satisfactorily put in and out the article M with respect to the heat insulating box 11 is the position of the first lower shelf member 13A in the lower shelf group that is regulated by the stopper 37 and is located at the lowermost position (in and out). (Position).
[0024]
In the state described above, by rotating the gear motor 24 in the reverse rotation direction, each of the fourth upper suspenders 31D disposed in the four endless chains 22 and 23 for raising and lowering the second linear traveling unit Move upward. As a result, the fourth upper suspension members 31D engage with the lower engagement portions 35 of the uppermost first lower shelf member 13A in the lower shelf group, respectively, from below, and the first lower shelf member 13A, that is, the lower portion When the shelf group moves upward and the second lower shelf member 13B reaches the loading / unloading position as shown in FIG. 12, the gear motor 24 stops. Thus, the operator can easily place (accommodate) the article M on the second lower shelf member 13B in an easy posture without bending the waist.
[0025]
When the gear motor 24 is further rotated in the reverse rotation direction and the fourth upper suspension 31D is moved upward in the second linear moving portion, the lower shelf group is also moved upward, and the third lower shelf is moved as shown in FIG. The member 13C arrives at the loading / unloading position, and at this time, the gear motor 24 stops. Therefore, the operator can easily place the article M on the third lower shelf member 13C in an easy posture.
[0026]
Next, by rotating the gear motor 24 in the forward rotation direction, each of the fourth upper suspension members 31D of the four endless chains 22 and 23 for raising and lowering the lower engaging portion of the first lower shelf member 13A. In the state engaged with 35, the second linear traveling portion is moved downward, and accordingly, the lower shelf group is also moved downward. Then, after the lower shelf group has arrived at the lowermost portion where the downward movement is restricted by the stopper 37, the fourth upper suspension tool 31D is separated downward from the lower engagement portion 35 of the first lower shelf member 13A. However, the lower shelf group is not moved up and down.
[0027]
The gear motor 24 stops when the fourth upper suspending tool 31D is separated downward from the lower engaging portion 35 of the first lower shelf member 13A, and the upper and lower shelf groups return to the initial positions shown in FIG. At this time, since the first upper shelf member 12A in the upper shelf group stacked on the first lower shelf member 13A faces the aforementioned loading / unloading position, the article M can be easily put on the first upper shelf member 12A. Can be placed in a proper posture.
[0028]
By the rotation of the gear motor 24 in the forward rotation direction described above, the first upper suspension tools 31A of the four endless chains 22 and 23 for raising and lowering move the first linear traveling unit upward. That is, the first upper suspending tool 31A facing the lower side of the upper shelf group stacked on the first lower shelf member 13A is passed through each of the upper and lower upper shelf members 12D, 12C, and 12B. After passing through the holes 33D, 33C, and 33B from below, the first upper shelf member 12A is engaged with the upper engagement portion 32 from below, and the first upper shelf member 12A is moved upward. Thereby, as shown in FIG. 14, the first upper shelf member 12A is spaced upward from the lower second upper shelf member 12B, and between the upper shelf members 12A and 12B, the first upper suspension member 31A and the second upper shelf member 12A are separated. A space corresponding to the separation distance from the hanger 31B is defined. In this state, since the second upper shelf member 12B faces the loading / unloading position, the article M can be placed on the second upper shelf member 12B in an easy posture.
[0029]
Thereafter, the second upper shelf member 12B and the third upper shelf member 31C sequentially move the corresponding second upper shelf member 12B and the third upper shelf member 12C upward, and the gear motor 24 is stopped, and the second upper shelf member 12B and the third upper shelf member 12C are located below the second upper shelf member 12B and the third upper shelf member 12C. Each time the three upper shelf members 12C and the fourth upper shelf member 12D face the loading / unloading position, the article M is placed on the corresponding upper shelf members 12C and 12D. Also in this case, as described above, the placement work of the article M on the upper shelf members 12C and 12D can be performed in an easy posture without bending the waist. Then, when the first upper shelf member 12A comes to the top and the gear motor 24 stops, as shown in FIG. 15, the fourth upper shelf member 12D corresponding to the fourth upper suspension member 31D becomes the first lower shelf member. The article M can be placed in an easy posture with respect to the first lower shelf member 12A which is supported at a position spaced upward from 13A and faces the loading / unloading position.
[0030]
In addition, when taking out the article M from the respective shelf members 12 and 13, contrary to the above, the respective shelf members 12 and 13 are sequentially stopped and held at the loading and unloading positions. The work of taking out the article M from 13 can be performed in an easy posture.
[0031]
That is, in the elevating device 14 according to the embodiment, the upper shelf group and the lower shelf group are moved up and down separately only by traveling the four endless chains 22 and 23 in the forward and reverse directions, and all the shelf members 12, 13 can be moved to a height position where the operator can satisfactorily perform the work of taking in and out the article M such as tableware. Moreover, since the vertical movement between the upper shelf group and the lower shelf group only needs to be reversed, the configuration of the lifting device 14 can be simplified, the manufacturing cost can be reduced, and the assembly cost can be reduced. Maintenance and the like are also simplified.
[0032]
[Another example]
FIGS. 16-22 shows the raising / lowering apparatus based on another Example, Comprising: Since the fundamental structure is the same as the Example mentioned above, only a different part is demonstrated and the same code | symbol is used about the same member Is shown. That is, the lifting device 38 according to the first alternative embodiment shown in FIGS. 16 and 17 is rotated before being driven by the gear motor 24 via the first sprocket 25, the first drive chain 27, and the second sprocket 26. A drive gear 39 is disposed on the drive shaft 16 so as to rotate integrally. Further, a fifth sprocket 42 is disposed so as to rotate integrally with a rotation shaft 41 on which a driven gear 40 meshing with the drive gear 39 is disposed, and is integrated with the fifth sprocket 42 and the rear drive shaft 17. A third drive chain 44 is wound around the sixth sprocket 43 arranged so as to rotate. Accordingly, when the gear motor 24 is rotated, the front and rear drive shafts 16 and 17 are rotated in opposite directions, and are rotated by the front endless chains 22 and 22 rotated by the front drive shaft 16 and the rear drive shaft 17. Then, the endless chains 23 and 23 are configured to circulate in the opposite direction. In the first alternative embodiment, in the front endless chain 22, the linear traveling portion that is located on the front side and travels in the vertical direction is the first linear traveling portion (one linear traveling portion) as in the above-described embodiment. In contrast, the straight traveling part that is located on the rear side and travels in the vertical direction is the second straight traveling part (the other linear traveling part), whereas the rear endless chain 23 is located on the front side and travels in the vertical direction. The straight traveling portion that performs this operation is the second straight traveling portion (the other linear traveling portion), and the linear traveling portion that is located on the rear side and travels in the vertical direction is the first straight traveling portion (one linear traveling portion).
[0033]
The front and rear endless chains 22 and 23 are respectively provided with first to fourth upper suspension tools 31A to 31D similar to those described above at predetermined intervals in the traveling direction. The lifting tools 31A to 31D are set to move up and down while maintaining the same horizontal level in the first linear traveling part or the second linear traveling part of the front and rear endless chains 22, 23. The upper engaging portions 32 provided on the upper shelf member 12 are positioned so as to correspond to the first linear traveling portions located outside the front and rear endless chains 22 and 23, and move up and down the first linear traveling portions. The corresponding upper shelf members 12A to 12D are configured to be moved up and down by the upper suspension tools 31A to 31D.
[0034]
On the other hand, each lower engagement part 35 provided in the first lower shelf member 13A is positioned so as to correspond to the second straight traveling part located inside the front and rear endless chains 22, 23, and the second straight line The first lower shelf member 13 </ b> A is configured to be moved up and down by the fourth upper suspension tools 31 </ b> D that move up and down the traveling unit.
[0035]
That is, in the first alternative embodiment, similarly to the above-described embodiment, the upper shelf group and the lower shelf group are moved up and down separately only by running the four endless chains 22 and 23 in the forward and reverse directions. Thus, it is possible to move all the shelf members 12 and 13 to a height position at which the operator can satisfactorily perform the work of taking in and out the article M such as tableware. Moreover, since the vertical movement between the upper shelf group and the lower shelf group can be switched only by reversing the endless chains 22 and 23, the configuration of the lifting and lowering device 38 can be simplified, the manufacturing cost can be reduced, and the assembly cost can be reduced. Maintenance and the like are also simplified. Furthermore, in 1st another Example, upper shelf members 12A-12D are moved by the 1st-4th upper suspension tools 31A-31D which move up and down the 1st linear running part located outside the endless chains 22 and 23 located in the front and back. Since the first lower shelf member 13A (lower shelf group) is moved up and down by the fourth upper suspension tool 31D that moves up and down and moves up and down the second linear traveling portion located inside, the upper suspension tools 31A to 31A The moving position of 31D is symmetric with respect to the center of the heat insulating box 11 in the front-rear direction. Thereby, the shape of the upper and lower shelf members 12, 13 can be made symmetrical in the front-rear direction (the direction in which the front and rear endless chains 22, 23 are separated), and the shelf members 12, 13 can be stably moved up and down. It becomes possible.
[0036]
In the lifting device 49 of the second alternative embodiment shown in FIG. 18, the seventh sprocket 51 is integrated with the operating shaft 50 that extends in the front-rear direction orthogonal to the front and rear drive shafts 16 and 17 and is rotatably arranged. A fourth drive chain 52 is wound around the seventh sprocket 51 and the first sprocket 25 of the gear motor 24. Front and rear drive bevel gears 55 and 56 that mesh with front and rear driven bevel gears 53 and 54 that are integrally disposed with the corresponding front and rear drive shafts 16 and 17 are integrally rotated at both shaft ends of the operating shaft 50. The front and rear drive shafts 16 and 17 are configured to rotate forward and reverse in the same direction by forward and reverse rotation of the operating shaft 50. In the machine room 15, a fan motor 57, an electrical box 58, and an exhaust duct 59 are disposed at positions that do not interfere with the drive unit in the lifting device 49.
[0037]
The lifting device 60 of the third alternative embodiment shown in FIG. 19 differs from the second alternative embodiment only in the power transmission means from the gear motor 24 to the operating shaft 50. That is, the worm wheel 61 is disposed so as to rotate integrally with the operating shaft 50 in which the front and rear drive bevel gears 55 and 56 are disposed at both shaft ends, and the output shaft of the gear motor 24 is disposed on the worm wheel 61. The worm 62 disposed in 24a is configured to mesh. Therefore, by rotating the gear motor 24 forward and backward, the front and rear drive shafts 16 and 17 are rotated forward and backward in the same direction under the meshing action of the worm 62 and the worm wheel 61.
[0038]
The lifting device 63 of the fourth alternative embodiment shown in FIG. 20 is configured to directly rotate and drive the front drive shaft 16 by the gear motor 24, unlike the second and third alternative embodiments. That is, the worm wheel 64 is arranged to rotate integrally with the front drive shaft 16, and the worm 65 arranged on the output shaft 24 a of the gear motor 24 is engaged with the worm wheel 64. Therefore, by rotating the gear motor 24 forward and backward, the front drive shaft 16 is rotated forward and backward under the meshing action of the worm 65 and the worm wheel 64. The front and rear drive shafts 16 and 17 are connected by the third sprocket 28, the fourth sprocket 29, and the second drive chain 30 as in the above-described embodiment, and both the drive shafts 16 and 17 rotate in the same direction. It is like that.
[0039]
In the second to fourth other embodiments described above, the same operational effects as those of the above-described embodiments can be obtained. In the third and fourth alternative embodiments, the endless chains 22 and 23 are formed by using worms 62 and 65 and worm wheels 61 and 64 having self-locking properties as power transmission means from the gear motor 24. Even when the gear is cut or the brake of the gear motor 24 breaks down, it is possible to suppress the fall of the upper and lower shelf members 12 and 13 and improve safety. That is, it is not necessary to provide a separate safety device, and the number of parts can be reduced. Furthermore, since the drive part in the raising / lowering devices 60 and 63 can be reduced in size, it can be employed in a small mechanical device. In the configuration in which the gear motor 24 is directly connected to the front drive shaft 16 as in the fourth alternative embodiment, the power transmission parts can be reduced to reduce the cost, and the maintainability is also improved.
[0040]
FIG. 21 shows a fifth alternative embodiment in which a guide structure is added to the upper and lower shelf members in the lifting device, and each of the upper engagement members 32 of the upper shelf members 12 has a through hole 45 penetrating vertically. The guide rod 46 that is disposed in the heat insulating box 11 and extends in the vertical direction is inserted through the four through holes 45 that are aligned in the vertical direction. That is, each upper shelf member 12 is configured to move up and down while being supported by the four guide rods 46 at its four corners. In addition, although not shown regarding the lower shelf member 13, while providing a through-hole in the lower engaging part 35 of the 1st lower shelf member 13A, 4th upper suspension tool 31D of 2nd and 3rd lower shelf member 13B, 13C is provided. An extension portion is provided at a position where the guide rod is not interfered with, and the guide rod is inserted through the through hole formed in the extension portion and the through hole provided in the lower engagement portion 35 in common.
[0041]
And by configuring in this way, it is possible to stably move the upper and lower shelf members 12 and 13 up and down and to prevent the shelf members 12 and 13 from shaking and scratching the inside of the heat insulating box 11. it can. Further, by preventing the shelves 12 and 13 from shaking, the outer dimensions of the shelves 12 and 13 can be increased, and the amount of the article M can be increased. Further, according to the configuration in which the four corners of the shelf members 12 and 13 are supported by the guide rod 46, the endless chains 22 and 23 are also used in the configuration of each embodiment in which the power transmission means having the self-locking property described above is not used. Even when the brakes of the gear motor 24 are broken or the brake of the gear motor 24 is broken, it is possible to suppress the fall of the upper and lower shelf members 12 and 13 by the sliding contact between the through hole 45 and the guide rod 46, thereby improving safety. To do.
[0042]
The structure for guiding the upper and lower shelf members 12 and 13 is not limited to the configuration shown in FIG. 21, and the upper and lower engaging portions 32 and 35, for example, as in the sixth embodiment shown in FIG. A guide member 47 having a C channel shape may be provided at the side end portion of the guide member 48, and a guide member 48 formed in a T shape for guiding the guide member 47 may be disposed in the heat insulating box 11.
[0043]
[Example of change]
The present application is not limited to the configuration of the above-described embodiment, and other configurations can be appropriately employed.
1. In the embodiment, each shelf member is moved up and down by four endless chains. However, each shelf member is supported by a guide member and the like so as to be stably moved up and down, and is arranged facing the width direction. It is possible to adopt a configuration in which the vertical movement is performed by a pair of endless chains provided.
2. The endless cord body that moves the shelf member up and down is not limited to the endless chain, and may be an endless wire, belt, or the like.
3. The numbers of the upper shelf group and the lower shelf group are not limited to those shown in the embodiment, and at least one each is sufficient, and the number of the upper shelf members and the number of the upper suspension members disposed in the endless chain are the same. It only needs to match.
4). Regarding the lower suspender for moving the lower shelf member up and down, in the embodiment, the upper suspender for moving the lowermost upper shelf member in the upper shelf group up and down is used, but for moving the lower shelf member up and down A dedicated underhanger may be disposed in the endless chain.
5. With respect to the lower shelf group, a configuration in which the upper and lower lower shelf members are connected by a cord such as a flexible wire can be employed. In this case, the plurality of lower shelf members have the same configuration as the upper shelf member, and each lower shelf member is moved up and down by a corresponding lower suspender arranged in the endless cable body at predetermined intervals in the traveling direction. Can do.
6). In the second and third alternative embodiments, the front and rear drive shafts are changed by changing the meshing positions of the front and rear drive bevel gears disposed on the operating shaft and the front and rear driven bevel gears disposed on the front and rear drive shafts. Can be configured to rotate in the opposite direction. Further, the power transmission means having the self-locking property in the two different embodiments is not limited to the worm and the worm wheel, and other self-locking devices such as a hypoid gear can be appropriately employed.
7). In the embodiment, the first alternative embodiment, and the fourth alternative embodiment, the gear motor is connected to the front drive shaft for rotational driving. However, the gear motor may be connected to the rear drive shaft for rotational driving. .
8). Each end of the shelf member is extended to the outside of the chamber in which the articles are stored, and the endless chain provided with the upper and lower suspensions that engage the engagement portion to move the shelf member up and down is also outdoor. The structure arrange | positioned in can be employ | adopted. According to this configuration, since an endless chain or the like is not exposed in a room that stores articles, the appearance can be improved.
9. In the embodiment, the dish disinfection storage is described as an example of the storage for arranging the lifting device, but the present application is not limited to this, and a plurality of shelf members can be moved up and down in the shelf frame. As long as it is arranged, it can be employed in other storages such as a refrigerator and a warm storage.
[0044]
【The invention's effect】
As described above, according to the lifting and lowering device for a shelf member according to the present invention, the upper shelf member is moved up and down by the upper suspension tool that moves one linear traveling portion that travels in the vertical direction in the endless cord body, and the endless cord body. Since the lower shelf member is moved up and down by the lower lifting tool that moves the other straight traveling portion that travels in the vertical direction, each shelf is placed at a height position that allows the article to be taken in and out with a simple configuration. The member can be moved. In addition, since the configuration of the lifting device can be simplified, the number of parts can be reduced, manufacturing costs can be kept low, and assembly, maintenance, and the like are facilitated.
[0045]
By configuring the pair of endless cords arranged in parallel on each side of the shelf member to circulate in opposite directions, the shape of the upper and lower shelf members is symmetrical in the separation direction of the endless chain. And stable vertical movement of the shelf member can be achieved. In addition, even when a plurality of upper and lower shelf members are provided, all the shelf members can be moved to a height position where the article can be put in and out satisfactorily. You can do it easily. Furthermore, the number of parts can be further reduced by using the upper suspension tool that moves the lower shelf member up and down as the lower suspension device that moves the lower shelf member up and down.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram showing a tableware disinfection storage that employs a lifting device for shelf members according to a preferred embodiment of the present invention.
FIG. 2 is a schematic perspective view of the lifting device according to the embodiment.
FIG. 3 is a schematic plan view of a main part showing a relationship between a first upper through hole established in a first upper shelf member according to an embodiment and a corresponding first upper suspension tool.
FIG. 4 is a schematic plan view of a main part showing a relationship between a second upper through hole formed in a second upper shelf member according to an embodiment and a corresponding second upper suspension tool.
FIG. 5 is a schematic plan view of a main part showing a relationship between a third upper through hole formed in a third upper shelf member according to an embodiment and a corresponding third upper suspension tool.
FIG. 6 is a schematic plan view of a main part showing a relationship between a fourth upper through hole formed in a fourth upper shelf member according to an embodiment and a corresponding fourth upper suspension tool.
FIG. 7 is a schematic plan view showing a first upper shelf member according to the embodiment.
FIG. 8 is a schematic plan view showing a first lower shelf member according to the embodiment.
FIG. 9 is a schematic plan view showing a second or third lower shelf member according to the embodiment.
FIG. 10 is a schematic plan view of a main part showing a relationship between a lower through hole formed in the first lower shelf member according to the embodiment and a corresponding fourth upper suspension tool.
FIG. 11 is an operation explanatory view of the lifting device according to the embodiment and shows a state where four upper shelf members are stacked on the first lower shelf member in the lower shelf group located at the lowermost portion.
FIG. 12 is an operation explanatory view of the lifting device according to the embodiment, and shows a state in which the second lower shelf member in the lower shelf group is raised to the article loading / unloading position.
FIG. 13 is an operation explanatory view of the lifting device according to the embodiment and shows a state in which the third lower shelf member in the lower shelf group is raised to the article loading / unloading position.
FIG. 14 is an operation explanatory diagram of the lifting device according to the embodiment, and shows a state in which the first upper shelf member is raised to allow articles to be taken in and out of the second upper shelf member.
FIG. 15 is an operation explanatory view of the lifting device according to the embodiment, showing a state in which the fourth upper shelf member is raised to allow articles to be taken in and out of the first lower shelf member.
FIG. 16 is a schematic configuration diagram showing a tableware disinfection storage that employs a lifting device according to a first alternative embodiment.
FIG. 17 is a schematic plan view showing a drive unit of the lifting device according to the first alternative embodiment.
FIG. 18 is a schematic plan view showing a drive unit of a lifting device according to a second alternative embodiment.
FIG. 19 is a schematic plan view showing a drive unit of a lifting device according to a third alternative embodiment.
FIG. 20 is a schematic plan view showing a drive unit of a lifting device according to a fourth alternative embodiment.
FIG. 21 is a schematic plan view showing an upper shelf member of a lifting device according to another fifth embodiment to which a shelf member guide structure is added.
FIG. 22 is a schematic plan view of a main part of a shelf member of an elevating device according to another sixth embodiment that adopts another guide structure for the shelf member.
[Explanation of symbols]
11 Insulation box (shelf frame), 12 upper shelf member, 12D 4th upper shelf member
13 Lower shelf member, 13B Second lower shelf member (separate lower shelf member)
13C Third lower shelf member (separate lower shelf member), 22 Front endless chain (endless cord)
23 Endless chain (endless cord), 31 Upper suspension
31D 4th upper suspension tool (lower suspension tool), 32 Upper engaging part, 33 Upper through-hole
34 shelf columns (connecting members), 36 lower through-hole, 35 lower engaging part

Claims (4)

An upper shelf member (12) and a lower shelf member (13) which are arranged inside the shelf frame (11) and are movable up and down;
A plurality of endless cords (22, 23) arranged in the shelf frame (11) and circulating in the vertical direction;
Upper through-holes that are opened in the upper engaging portion (32) provided in the upper shelf member (12) and through which one straight traveling portion that travels in the vertical direction in each endless cord (22, 23) passes ( 33) and
A lower through hole that is opened in the lower engaging portion (35) provided in the lower shelf member (13) and through which the other straight traveling portion that travels in the vertical direction in each endless cord (22, 23) passes. (36)
Wherein disposed in each non Tansakutai (22,23), the upper engagement of the upper tray member in endless rope body (22, 23) is one of the straight running portion was run to move upwards (12) An upper suspension (31) that engages with the joint portion (32) from below and moves the upper shelf member (12) up and down by traveling in the forward and reverse directions of the endless cords (22, 23) in this engaged state ; ,
The bottom of each non Tansakutai disposed (22, 23), endless rigging the lower shelf member (22, 23) when the other of the straight running portion was run to move upwards (13) engages from below with the engaging portion (35), the engagement with the endless cable body (22, 23) in the forward or reverse direction traveling by Shitatana member (13) vertically moved to under hanger of (31D )
Wherein the hanging member (31) and the lower hangers (31D) is engaged with the upper hangers (31) and the lower hangers (31D) is respectively upper engaging portion (32) and the lower engaging portion (35) In the state where the upper end suspension (31) and the lower end suspension (31D) are positioned below the corresponding upper engagement portion (32) and lower engagement portion (35) , the endless cord ( lifting device of the shelf member, characterized in <br/> that are arranged in 22, 23).   A pair of endless cords (22, 23) are arranged in parallel on each side of each shelf member (12, 13), and one endless cord (22) and the other endless cord on each side ( 23. The lifting device for a shelf member according to claim 1, wherein the lifting device is configured to circulate in a direction opposite to 23). Inside the shelf frame (11), a plurality of the upper shelf members (12) are disposed so as to be vertically movable, and the lower shelf member (13) is disposed below these upper shelf groups so as to be vertically movable. In this lower shelf member (13), different types of lower shelf members (13B, 13C) are connected to each other by a connecting member (34) in a state where they can be separated with a predetermined height dimension,
Each of the endless cords (22, 23) has a number of the upper suspenders (31) corresponding to the number of the upper shelf members (12) arranged in the traveling direction of the endless cords (22, 23). Spaced apart,
The upper through-holes (33) opened in each upper shelf member (12) are set to have different shapes or sizes for the upper and lower ones, and the upper suspension (31) has a corresponding upper shelf. The upper through hole (33) engaging with the upper engagement portion (32) of the member (12) and positioned below the upper engagement portion (32) is set to be able to pass therethrough. Elevating device for shelf member.   The lifting / lowering of the shelf member according to claim 3, wherein the upper suspension tool (31D) corresponding to the lowermost upper shelf member (12D) in the upper shelf group also serves as a lower suspension tool for moving the lower shelf member (13) up and down. apparatus.

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