JP6236234B2 - Storage door opening / closing structure - Google Patents

Description

  The present invention relates to a door opening / closing structure of a storage, and more particularly, to an improvement in a door opening / closing structure in which the opening of the storage is always closed at the raised position and then the opening is opened by turning to the lowered position. .

  For example, a commercial ice maker includes an ice making chamber in the upper part of a housing, and an ice storage for storing ice blocks released from the ice making chamber is provided below the ice making chamber. The ice storage chamber is provided with an opening for taking out ice blocks, and the opening is closed by a door so as to be opened and closed. As the arrangement pattern of the door, there are a type in which the door is tilted and opened before the operator, a type in which the door is repelled upward and opened. In the present invention, a door of an opening of an ice storage or the like is moved up and down to open and close the opening. That is, the door always closes the opening at the upper (or lower) position, and when taking out the stored articles in the warehouse, the door is moved to the lower (or upper) position, The present invention relates to a door opening / closing structure that opens an opening.

  A conventional opening / closing structure that opens and closes the opening by raising and lowering the door will be described below. 12-14 has shown the door opening / closing structure of the ice storage based on the prior art described in the patent 3913448 (patent document 1). 12 and 13 show the ice storage 10 in the unit type ice making machine, and ice blocks released from ice making units (not shown) stacked above the ice storage 10 are stored. A rectangular opening 14 for taking out ice blocks stored in the storage is opened at the front upper side of the housing in the ice storage 10 (FIG. 12). A door 16 made of, for example, transparent glass is disposed in the opening 14 so as to be vertically movable, and the door 16 is always positioned upward to close the opening 14. When the ice block is taken out, if the hand 16 is put on the handle 18 of the door 16 and pressed downward, the door 16 descends and stops at a predetermined lower position, and the opening 14 is largely opened.

  12 and 13 show a state in which the door 16 is in the lowered position and the opening 14 is opened, and slide rails 20 and 20 are vertically arranged on the left and right of the opening 14 in the housing 12, respectively. The both sides of the door 16 are supported by the slide rails 20 and 20 so as to be movable up and down. Further, on the front side of the housing 12, on the left and right sides below the opening 14, guides 22 and 22 aligned with the slide rails 20 and 20 are vertically arranged, and the door 16 when descending is provided. These guides 22 and 22 are used to guide both sides.

  FIG. 14 is an enlarged view of a main part of the side surface showing a state where the door 16 is in the raised position and the opening 14 is completely closed. Two elastic bent pieces 24 and 24 (FIG. 14 shows only the front right side of the housing 12) are fixed to the left and right side surfaces of the front surface of the housing 12 while maintaining a predetermined distance in the vertical direction. . Further, a wiper 26 made of a long piece is fixed to the lower end portion of the door 16 in the lateral direction, and the left and right end portions of the wiper 26 extend slightly from the left and right sides of the door 16. The upper and lower ends of the extended end of the wiper 26 are cut obliquely to form an inclined engagement surface 26a. Then, as shown in FIG. 14, the elastic bent piece 24 positioned above is elastically engaged with an inclined engaging surface 26a of the wiper 26 provided on the door 16 at the upper position, and the door 16 Is preventing the descent due to gravity. Further, by pressing the door 16 downward, the engagement between the upper elastic bent piece 24 and the inclined engagement surface 26a is released, and thereafter the vehicle 16 is lowered by its own weight. Then, when it is lowered by a predetermined distance, the inclined engagement surface 26a elastically engages with the lower elastic bent piece 24 and stops the door 16 in a state where the falling speed is relaxed to a specified position.

[Another conventional example]
15 to 17 show a door opening / closing structure according to another prior art described in Japanese Patent No. 3911383 (Patent Document 2). In FIG. 15, an ice making chamber (not shown) is provided above the housing 12, an ice storage 10 is provided in the middle, and a machine chamber (not shown) for storing a compressor or the like is provided below. An ice machine is shown. The front surface of the ice storage 10 in the housing 12 is covered with a front panel 28, and a rectangular opening 14 is formed in the lower half of the front panel 28. FIG. 15 shows a state in which the opening 14 is closed by the door 16. FIG. 16 is a front view showing a state in which the front panel 28 is removed, and the door 16 is positioned above to open the opening 14. FIG. 17 shows the back surface of FIG. The door opening / closing structure according to this other conventional example is also provided with the slide rail and guide described with reference to FIG.

  A pulley 32 is rotatably supported on the right side and the left side of the horizontal frame 30 in FIG. The upper portion of the door 16 is connected to one end of a wire 34. The wire 34 is wound around the corresponding pulley 32, and the weight 36 provided on the back side of the door 16 shown in FIG. The other end of the wire 34 is connected. In addition, elastic pressing pieces 38 are correspondingly provided at the left and right lower ends of the opening portion 14 of the front panel 28, and elastically contact with the left and right edges of the door 16 when the door is opened and closed. It is designed to absorb the error of weight balance.

Japanese Patent No. 3913448 Japanese Patent No. 3911383

  In the conventional door opening / closing structure shown in FIGS. 12 to 14, the operator lifts the door 16 by hand from below and closes the opening portion 14, which has a force more than the weight of the door 16 (about 2 kg). is necessary. Further, in the structure in which the elastic bending piece 24 elastically holds the door 16 from both sides, a load is further applied when the door 16 is lifted up. That is, since the elastic bent piece 24 has a force for holding the weight of the door 16, a force twice the weight of the door 16 (about 4 kg) is required to completely close the door 16. Further, when the door 16 is opened, the elastic bent piece 24 maintains this state, and therefore the ice must be manually closed after the ice is taken out.

  In another conventional door opening / closing structure shown in FIGS. 15 to 17, when a plurality of ice making machines are placed on the ice storage, it is necessary to be integrated with the front panel of the ice making machine. For this reason, a front panel for each ice machine is required. And if it is set as the structure matched with the ice storage shown in FIG. 16, since it becomes a mechanism which has arrange | positioned the pulley to the upper part or side surface of a door, it will be forced to block the opening part of an ice storage greatly. That is, there is a problem that a space for disposing the pulley is necessary, and the opening becomes narrow.

In order to solve the above-mentioned problem and achieve the intended purpose, the invention according to claim 1 is provided with an opening formed in a front frame of the housing, a door accommodating portion adjacent to the opening in the vertical direction, In a storehouse having a door that can freely move up and down in the vertical direction and always closes the opening and opens the opening by moving to the door accommodating portion.
A pulley pivotally supported on the opening side of the front frame in the door accommodating portion;
It is provided on the front frame in the door accommodating portion, and consists of the pulley and a wire winding device located on the opposite side in the vertical direction ,
It said pulled out from the wire take-up device, always wire driving force in the winding direction is applied, the open end of the wire is fixed to the door after being wound around the pulleys,
The gist is that the pulley pivotally supported by the front frame of the door accommodating portion is positioned on the front side of the lift area of the door .
According to the first aspect of the present invention, since the driving force in the winding direction is acting on the wire drawn out from the wire winding device, when the door is raised, power assist by the wire is obtained and light. Can be operated with force. When the door is lowered to open the door, the operator opens the door by pushing down the door against the wire winding force of the wire winding device. Further, since there is a door opening / closing structure including a pulley on the front side of the lift area of the door, the pulley and the like are exposed by simply removing the front panel when performing maintenance. This facilitates maintenance work.

The gist of the invention described in claim 2 is that the wire winding device can adjust the driving force for winding the wire in accordance with the weight of the door.
According to the second aspect of the invention, an appropriate power assist and braking force are given according to the weight of the door. If the wire winding force of the wire winding device is set to such a value that when the operator releases the hand from the opened door, the door automatically rises and closes the opening. This is convenient when your hand is blocked by a shopping bag.

According to a third aspect of the present invention, there is provided a door stop piece for restricting movement of the door at a position where the door is accommodated in the door accommodating portion and the opening is completely opened on the front frame of the door accommodating portion. The gist is that it is provided.
According to the invention which concerns on Claim 3 , in the predetermined position where the door moved and accommodated in the door accommodating part, the said door contact | abuts on a door stop piece and position control is made | formed.

The gist of the invention of claim 4 is that the open end of the wire is fixed to a bracket attached to the door.
According to the invention which concerns on Claim 4 , since a wire is not directly attached to a door but fixed with the bracket attached to the door, repair and a maintenance become easy.

According to a fifth aspect of the present invention, an elastic position restricting piece is provided on the bracket, the position restricting piece is a member to which the pulley is attached at a position where the door is completely closed. The gist is that they come into contact.
According to the fifth aspect of the present invention, the impact of the closing operation is mitigated by the position restricting piece resiliently contacting the pulley mounting member at the position where the door completely closes the opening of the storage. Can do.

  According to the present invention, since the driving force in the winding direction is acting on the wire drawn out from the wire winding device, when the door is lifted, the power assist by the wire is obtained and the force is light. Can be operated. When the door is lowered to open the door, the operator opens the door by pushing it down against the wire winding force of the wire winding device by hand. Therefore, even if the operator's hand is blocked by a shopping bag or the like, the door can be opened with a light force.

FIG. 3 is a front view showing the front frame of the door opening / closing structure according to the embodiment covered with a front panel, showing a state where the lower right half of the front panel is removed and the door is lowered to open the opening. ing. FIG. 2 is a perspective view of the front frame shown in FIG. 1 and is covered with a front panel. It is a perspective view which shows the state which removed the front panel from the front frame shown in FIG. FIG. 1 shows the front frame shown in FIG. 1 with the lower right half of the front panel removed and the door raised to close the opening. FIG. 5 is a perspective view of the front frame shown in FIG. 4 and is covered with a front panel. It is a perspective view which shows the state which removed the front panel from the front frame shown in FIG. FIG. 5 is a central longitudinal side view of the front frame shown in FIG. 4. It is a front side perspective view of the door used for the door opening and closing structure shown in FIG. It is a back surface side perspective view of the door shown in FIG. FIG. 1 is an enlarged view of a main part of a circular portion indicated by a symbol A in FIG. 1, and shows a state in which the position of a door that is lowered by engaging an elastic bent piece with an end edge of a wiper is regulated. It is a center longitudinal cross-sectional side view which shows the example of a change of the Example shown in FIG. In the ice storage which concerns on a prior art, it is a front view shown in the state which lowered the door, The right side of a front panel can be removed and the inside can be visually recognized now. It is a vertical side view of the ice storage shown in FIG. In the ice storage shown in FIG. 12, it is an enlarged view of the circular part shown with the code | symbol C, Comprising: A door exists in an upper position and has closed the opening part. It is the whole perspective view of the ice making machine based on another prior art, Comprising: While removing the front panel which covers the opening part of an ice storage, the state which closed the opening part provided in this front panel with the door is shown. It is a front view which shows the front frame of the ice storage shown in FIG. 15, Comprising: The state which raised the door and opened the opening part is shown. It is a partial back view which shows the back side of the front frame shown in FIG.

  Next, the door opening and closing structure of the storage according to the present invention will be described with reference to examples. In addition, the same code | symbol is attached | subjected about the same member as the member demonstrated by the prior art of FIGS. In the embodiment, the ice storage of the ice making machine has been described. However, the housing for storing and storing and storing the article has an opening for taking out the article, and the opening is opened and closed by a door that moves up and down. If it is a thing, various storage, storage, and other storage are included.

  1 to 3 show a state where the opening is completely opened at the position where the door is lowered in the door opening and closing structure according to the embodiment. 4 to 6 show a state in which the opening is completely closed at the position where the door is raised in the door opening and closing structure. The illustrated door opening / closing structure is shown as a front frame 40 in the housing 12 of the ice storage 10 shown in FIGS. 13 and 15. 3 and 6 show a front frame 40 attached to the front surface of the housing 12, and the front surface of the front frame 40 is covered with a front panel 28 shown in FIGS. The front frame 40 includes left and right vertical frames 42, 44, an upper frame 46 and a lower frame 48 that are connected to the vertical frames 42, 44 in the horizontal direction, and a horizontal frame positioned between the upper and lower frames 46, 48. The frame 50 (FIG. 7). Further, a rectangular opening 14 is defined between the upper frame 46 and the horizontal frame 50, particularly as shown in FIG. Accordingly, an opening 52 corresponding to the opening 14 is also provided above the front panel 28.

  As shown in FIGS. 3 and 6, slide rails 54, 56 are vertically arranged on the front surfaces of the left and right vertical frames 42, 44 in the front frame 40 with the opening 14 interposed therebetween. The slide rails 54 and 56 guide the door 16 slidably closing the opening 14 from both sides, and are vertically aligned below the slide rails 54 and 56. Guides 58 and 60 are provided. 4 to 6 is a rectangular plate made of, for example, transparent glass or resin, and when the opening 14 is closed, the door 16 is the slide rail. 54 and 56 are located on the upper and lower sides. When the opening 14 is opened, as shown in FIGS. 1 to 3, the door 16 is guided to the left and right by guides 58 and 60 and is positioned below. FIG. 8 shows the front side of the door 16 in a perspective view, and a handle 18 is provided on the top.

  The door 16 opens the opening 14 completely or closes it only when the operator touches the handle 18 and applies a light force in either the upper or lower direction. The door opening / closing structure will be described next. In this embodiment, as clearly shown in FIGS. 3 and 6, the wire 66 drawn from the wire winding device 64 is connected to the door 16 via a pulley 62 pivotally supported on the front frame 40. Thus, the labor of the operator has been reduced. 7, the front surface of the front frame 40 is covered with a front panel 28, and below the opening 14 and on the back side of the front panel 28 when the door 16 is lowered. A door accommodating portion 68 that completely accommodates the above is defined. That is, when the door 16 is in the raised position, the opening 14 is closed as shown in FIGS. When the door 16 is in the lowered position, it is accommodated in the door accommodating portion 68 to open the opening portion 14 as shown in FIGS.

  As shown in FIG. 7, a pulley mounting plate 70 is provided along the front frame 40 on the front side of the horizontal frame 50, and each pulley 62 is rotatably supported near the left and right ends of the pulley mounting plate 70. . Further, as shown in FIGS. 3 and 7, wire take-up devices 64 are disposed below the door accommodating portion 68 in the front frame 40 so as to correspond to the left and right pulleys 62, respectively. The wire 66 taken up by the wire take-up device 64 is drawn upward, wound around a corresponding pulley 62 and reversed, and the tip of the wire 66 is connected to the door 16. That is, as shown in FIG. 8, a reinforcing plate 72 is provided along the front side lower end portion of the door 16, and L-shaped brackets 74 are fixed to the left and right sides of the reinforcing plate 72, respectively. One end of the wire 66 drawn out from the wire winding device 64 is connected to the L-shaped bracket 74 as shown in FIG.

  As an arrangement relationship between the pulley 62 and the wire winding device 64, the pulley 62 having a small thickness is positioned on the inner front side of the door accommodating portion 68 as shown in FIG. The wire take-up device 64 is relatively bulky because it contains a wire take-up drum, a take-up spring, etc., but the wire take-up device 64 is as shown in FIGS. These are disposed in an empty space below the door accommodating portion 68. For this reason, the opening part 14 opened in the housing | casing 12 can be enlarged, and although the said pulley 62 and the wire winding device 64 are incorporated in the front side of the housing | casing 12, the protrusion dimension to the front As a result, the overall configuration can be made compact.

The wire take-up device 64 includes a wire take-up drum serving as a take-up portion of the wire 66 therein, and an overwind spring that constantly applies a rotational force in the take-up direction to the wire take-up drum (both not shown). Z)). For this reason, a force in the winding direction is always applied to the wire 66 drawn from the wire winding device 64. That is, even if the wire 66 is pulled out from the wire winding device 64, the wire 66 is automatically wound around the wire winding device 64 if the pulling force is weakened or released. The wire winding device 64 is provided with a mechanism (not shown) for adjusting the winding force of the wire 66. Therefore, when the door 16 is moved up from the lowered position shown in FIG. 3 to the door raised position shown in FIG. 6, the door 16 is slowly raised, so that there is no sudden raising operation. Conversely, when the door 16 shown in FIG. 6 is lowered from the raised position where the opening 14 is closed to the lowered position shown in FIG. 3 to open the opening 14, the wire winding device 64 is also used. Since the winding force is applied to the wire 66, the operator can perform the door opening operation with a light force. That is, the wire winding device 64 can adjust the driving force for winding the wire 66 according to the weight of the door 16.
In addition, as a structure which is incorporated in the wire winding device 64 and applies the winding force to the wire 66, the wire winding drum is rotated by the motor regardless of the above-described overwinding spring, and the driving force of the motor is rotated. May be set automatically or manually according to the weight of the door 16. For example, the wire winding force of the wire winding device 64 is set so that when the operator releases his / her hand from the opened door 16, the door 16 automatically rises to close the opening 14. The

  As shown in FIGS. 1 and 4, the door accommodating portion 68 below the front frame 40 is provided with a door stop piece 76 that stops at a predetermined position when the door 16 is lowered. That is, when the door 16 is lowered from the raised position of the door 16 shown in FIG. 4 to the position shown in FIG. 1, the reinforcing plate 72 provided on the lower edge of the door described in FIG. 8 strikes the door stop piece 76. The regulation stops at a fixed position. Also in this case, as described above, the strength of the wire winding force of the wire winding device 64 is adjusted according to the dead weight of the door 16, so that the door 16 descends slowly, so that the reinforcing plate 72 is The door stop piece 76 does not collide with force.

  In FIG. 8, on the upper surface of the L-shaped bracket 74 provided at the left and right lower ends of the door 16, a position restricting piece 78 having elasticity, such as elastic rubber or a spring, is provided. As shown in FIGS. 4 and 6, the position restricting piece 78 is a pulley mounting plate on which the pulley 62 is pivotally supported when the door 16 is moved to the raised position and the opening 14 is closed. 70 hits from below and plays a role as a stopper that elastically absorbs the impact and restricts its position. Also in this case, since the wire winding force of the wire winding device 64 is adjusted according to the dead weight of the door 16, it goes without saying that it moves slowly even if the door 16 is raised.

  A wiper 80 made of rubber, soft polypropylene, or the like is sandwiched and fixed on the back surface of the door 16 shown in FIG. 9 by a horizontally long fixing piece 82 and the reinforcing plate 72. The wiper 80 is for wiping off water droplets condensed on the front surface of the front frame 40 when the door 16 is lowered, and collecting the water droplets on the flange member 84 shown in FIG. The left and right edges of the wiper 80 are slightly extended from the left and right edges of the door 16, as shown in FIGS. And as shown in FIG. 10, it contacts the key-shaped stop piece 86 provided in the said guide 60. As shown in FIG. In other words, in FIG. 9, the door 16 is set in such a positional relationship that the opening 16 is completely opened with the stop piece 86 in contact with the right end surface of the wiper 80. The distance while the stop piece 86 is in contact with the right end surface of the wiper is in a state where the door 16 is braked.

  FIG. 11 is a central longitudinal side surface of the front frame 40 showing a modified example of the embodiment, in which the pulley 62 and the wire winding device 64 are positioned on the rear side of the raising / lowering region of the door 16. By comprising in this way, the protrusion amount to the front of the front panel 28 can be suppressed, thickness can be decreased, and the whole ice storage can be comprised compactly.

10 ice storage (storage), 12 housing, 14 openings, 16 doors, 40 front frame,
62 pulley, 64 wire take-up device, 66 wire, 68 door housing,
74 L-shaped bracket, 76 Door stop piece, 78 Position restricting piece

Claims (5)

The opening (14) established in the front frame (40) of the housing (12), the door accommodating portion (68) adjacent to the opening (14) in the vertical direction, and vertically movable up and down. In the storage (10) having a door (16) that opens the opening (14) by closing the opening (14) and moving to the door housing (68),
A pulley (62) pivotally supported on the opening side of the front frame (40) in the door accommodating portion (68);
Provided on the front frame (40) in the door accommodating portion (68), comprising the pulley (62) and a wire winding device (64) located on the opposite side in the vertical direction ,
Said pulled out from the wire winding device (64), always wire driving force in the winding direction is applied (66), opening of the wire (66) after being wound around said pulley (62) The end is fixed to the door (16) ,
The pulley (62) pivotally supported by the front frame (40) of the door accommodating portion (68) is located on the front side of the raising / lowering region of the door (16) . Door opening / closing structure.   The door opening / closing structure of the storage according to claim 1, wherein the wire winding device (64) is capable of adjusting a driving force for winding the wire (66) according to the weight of the door (16). The front frame (40) of the door accommodating portion (68) has the door (16) at a position where the door (16) is accommodated in the door accommodating portion (68) and the opening (14) is completely opened. The door opening / closing structure of the storage according to claim 1 or 2 , wherein a door stop piece (76) for restricting movement of the storage is provided. The door opening / closing structure of the storage according to any one of claims 1 to 3 , wherein an open end of the wire (66) is fixed to a bracket (74) attached to the door (16). The bracket (74) is provided with a resilient position restricting piece (78), and the opening (14) is in a position where the door (16) is completely closed, and the position restricting piece (78) is The storage door opening and closing structure according to claim 4 , wherein the door is in contact with a member to which the pulley (62) is attached.

Images