JPS63315007A - Freezing showcase - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Object of the Invention] Industrial Field of Application The present invention relates to a refrigerating showcase in which a part of the upper surface of the main body is opened and closed by a transparent door. This invention relates to improvements in the structure of gaskets to improve the degree of sealing.

Conventional technology: Freezer showcases are used to freeze and display containers containing frozen desserts such as ice cream and sherbet.
Products are taken in and taken out by opening and closing a transparent door configured to be openable and closable. However, when the openable/closable door is closed, some form of security-keeping means is usually provided to prevent the leakage of cold air inside the refrigerator and the intrusion of warm air outside the vehicle. In most cases, flexible gaskets are attached to the door or main body as a means of maintaining airtightness, and it depends on whether the emphasis is on maintaining airtightness or on how well the door opens and closes. , there are differences in the type, shape, etc. of the packing. For example, in Japanese Utility Model Publication No. 46-15465, a gasket is attached to the main body side, and a guide rail for guiding sliding members such as rollers installed on the door body is sloped upward in the opening direction. is disclosed.

Problems to be Solved by the Invention In the above-mentioned publication, the door body is formed to have a front face part extending in the vertical direction and an upper face part extending in the horizontal direction, rollers are installed on both sides of the lower end of the front face, The rollers are made to slide along the guide rails, and the rollers attached to the rear end of the top part are made to slide on the bottom of the sliding chamber, making it easy to open and close the door. Vertical and horizontal seals are attached to the main body to keep the door airtight. And by adding an upward slope to the guide rail,
Although we try to eliminate the rubbing between the side edge of the door body and the horizontal gasket that occurs when opening and closing the door, making it easier to open and close, the rubbing between the front side edge of the door body and the vertical gasket cannot be ignored, and it is difficult to open and close the door. Due to the wear of the vertical packing, the powder produced by the abrasion of the packing may fall into the inside of the refrigerator, which is a hygiene problem.

SUMMARY OF THE INVENTION Therefore, the present invention provides a refrigerating showcase equipped with an airtight retaining means (sealing member) that eliminates the friction associated with opening and closing the door without impairing the airtightness when the door is closed.

[Structure of the invention]

Means for Solving the Problems The present invention provides a refrigeration showcase having a transparent window and a rotatably held transparent door and a see-through section on the top thereof, which includes: A plurality of pillars each having an inclined rod that reinforces the see-through part and forms the same slope when the transparent door is closed, a body-side sealing member provided on each pillar, and a door-side sealing member provided on both left and right sides of the transparent door. The end portion of the door side sealing member overlaps the end portion of the main body side sealing member only when the transparent door is closed.

Function A door-side seal member (4) is provided from the top to the center of both left and right sides of the transparent door (6) to maintain the airtightness of the showcase (1) when the transparent door (6) is closed.
4) and the main body side seal member (48) provided from the center to the bottom of the inclined rod (22) of the side support (21), the material used as the seal member is reduced. The portion where both seal members (44) (4g> overlap) is only at the end near the center of the door side, and in addition, the end of the door side seal member (44) (second seal portion (45)) By placing it on the end of the main body side sealing member (48) (fourth sealing part (49>)), unnecessary use as a sealing member is avoided, and the transparent door (6) can be opened and closed. Friction on the sealing member due to operation is eliminated.Furthermore, even if dew on the lower surface of the door side sealing member (44) drips due to the inclination of the door, it is transmitted to the upper surface of the main body side sealing member (48). Therefore, it functions to suppress water droplets from falling from the door side seal member (44).

EXAMPLES Hereinafter, examples of the present invention will be described with reference to FIGS. 1 to 28.

(1) has a box-shaped outer box (2) with five sides closed except for the top at the bottom, and a heat insulating material (4) inside the outer box (2).
An inner box (3) made of highly water-resistant material such as stainless steel is arranged inside, and a transparent window (5)
The main body of the freezing showcase is represented by a dipping showcase, which has a see-through part (7) on its upper part with a transparent door (6) that can be opened and closed. Cooling pipes (8) are closely provided on the outer surface of the inner box (3), and a refrigerant is circulated within the cooling pipes (8) to cool the inside of the refrigerator (9). Note that the upper part of the refrigerator interior (9) experiences a rapid temperature rise due to the influence of heat intrusion due to the opening and closing work of the transparent door (6), so the support should be placed at the appropriate place in the upper part of the refrigerator, that is, at the upper rear of the case where the transparent door (6) is located. An evaporator (10) is installed (0) In this example, we will explain a dipping showcase as a frozen showcase. A lower door that can be opened and closed for putting in and taking out the case, and is provided at the lower rear of the case.

Next, the transparent part (7) will be explained. In this embodiment, the transparent part (7) has a rectangular shape in front and rear views and in plan view, and has a rectangular shape that widens toward the end in side view.・Fixed transparent windows (5) on both sides and top,
The rear side is a rotating transparent door (6), and the transparent windows include a front transparent plate (5A), side transparent plates (5B) (5B), and an upper transparent plate (5C). ) (hereinafter referred to as the top plate), a heat ray reflective film is pasted on its inner surface, and a heat ray reflective film is also pasted on the inner surface of transparent OJ]1 (6).

Then, the front end of the top plate (5c) and the upper end of the front transparent plate (5A) are connected by the front satush (15), and the lower end of the front transparent plate (5A) is connected by the front packing (16). It is held on the front breaker (17). In addition, the side transparent plate (5
The lower end of B) is held in the groove of the side breaker (18) with a side gasket interposed therebetween.

In addition, since the front transparent plate (5A) is configured to be inclined upward toward the rear, its lower end is inclined downward toward the rear, and the front gasket (16) is arranged so as to match this inclination.
), the dew adhering to the outer surface of the front transparent plate (5A) drips down the transparent plate (5A) and accumulates inside the packing, making it difficult for air to dry out. For this reason, there is a convex part (19) in the center of the inner bottom surface of the front packing (16).
), and several drainage holes (20) are formed at appropriate locations on the front side.The upper surface of the convex portion (19) is sloped to match the slope angle of the lower end of the front transparent plate (5A). Therefore, the external air flows into the front transparent plate (5A) on the upper surface of the convex portion (19).
This prevents water from entering the inside from the lower end, prevents water dripping into the packing from the front of the convex part (19) from moving to the inside of the refrigerator, and makes it easier to release water to the outside of the packing through the drain hole (20). Thus, the lower end of the front transparent plate (5A) is made easy to dry.

(21) is a side support for reinforcing the side surface of the transparent part (7), and in this example, it matches the slope of the rear part of the side transparent plate (5B) and extends upward from the upper end of the inner box (3). Slanted rod (22)
and a horizontal rod (23) extending parallel to the upper part of the side transparent plate (5B) from the inclined rod (22) in a horizontal direction.

And a side transparent plate (5B) on the outer surface of the side support (21)
assists in contacting the inner surface of the Also, the inclined rod of the side support (21〉)
22) is provided with a side plate holding member (24) that draws and holds the side transparent plate (5B) toward the side column. This side plate holding member (24) comes into contact with the inclined side located at the rear of the side transparent plate (5B), and also contacts the side transparent plate (5B).
It has a locking part (25) that locks on the outer surface of the base (26
) is fixed to the top surface of the inclined rod. Then, a flexible stopper (27) is attached to the inner surface of the side support (21) as a buffer member to relieve the rotational force caused by opening the upper left or right end of the door handle (43) of the transparent door (6), which will be described later. A stopper holding member (28), which is fixed so as to protrude to the side, is fixed to the upper surface of the base (26) of the side plate holding member (24). Furthermore, a side plate holding member (24) and a stopper holding member (2
8) Attach the corner decorative frame (29) from above both holding members (24) (2g).

In addition, the side plate holding member (24) and the stopper holding member (28)
) and corner decorative frame (29) are each fixed to the side support (21) by fixing means such as screws. That is, the side support (21)
is fixed to the upper end of the inner box (3), and the side transparent plate (5B) is held in place by being pulled toward the outer surface of this side support (21), so a hole is provided in the side transparent plate (5B). There is no need to fix it to the side support (21), and the hole and fixing means are not exposed to the outside, so the appearance is improved. In addition, since the stopper (27) is held in such a way that it protrudes from the inner surface of the side support (21), only a small amount of material is required as a buffer member, and replacement due to wear and tear is very easy. . Furthermore, since the side plate holding member (24) and the stopper holding member (28) are constructed as separate members, the stopper (27) can be replaced while the side transparent plate (5B) is firmly fixed. Therefore, the workability is good.

(30) is a top decorative frame constructed on the horizontal rods (23) (23) of the side support (21), and includes a front frame (31) that holds the rear end of the top plate (5C), and a front frame (31) that will be described later. Fluorescent light cover (3
4) and a rear frame (32) that holds the front end of the frame.
(33) is a mounting member that has a mounting surface having the same inclination as the sloped rod (22) and is provided on the upper part of the sloped rod (22).

(34) has a horizontal surface whose front end is removably held on the rear frame (32), and an inclined rod (2) which is bent on the rear end side of the horizontal surface.
2) becomes parallel to IIl,! This is a fluorescent light cover that is made of a heat-resistant material and is used as an illumination light cover for holding an illumination lamp, which will be described later, and has an inclined surface that is removably placed and fixed on the surface. A jacket member (37) for inserting a clip (36) for removably holding and fixing a fluorescent lamp (35) as an identification lamp is provided on the inner surface of the fluorescent lamp cover (34). (3B) is a blinding plate disposed in front of the fluorescent lamp (35) in order to make the arrangement of the fluorescent lamp (35) invisible from the front transparent plate (5A). A receiver for receiving a translucent shade (39) for transmitting light from a fluorescent lamp (35) downward is provided with a piece at its lower part. The shade (39) is located below the fluorescent lamp <35>, and is made of a translucent material in order to improve the display effect of the products for sale in the dipping showcase (1). , use one with poor transparency that makes it difficult to see the fluorescent light (35), wiring, etc.

The fluorescent lamp cover (34), the blind plate (38), and the shade (39) form a storage section (40) for storing the fluorescent lamp. In this way, the fluorescent lamp (35) is held and fixed on the inner surface of the fluorescent lamp cover (34), and the fluorescent lamp (35)
When removing the lamp, all you have to do is turn the fluorescent lamp cover (34) upwards and remove it, so the shade (39) can prevent dust from falling on the fluorescent lamp (35), and prevent dust from entering the chamber. can be prevented from falling. In addition, fluorescent lamps (35
) without removing the shade (39) etc. located below the fluorescent lamp cover (34) located above the fluorescent lamp (35).
), it is very easy to attach and detach the fluorescent lamp (35), making maintenance and inspection easy. Furthermore, because the shade (39) was made of a material that is transparent but not very transparent, the fluorescent light (35) and wiring may be reflected on the transparent door (6) when it is opened. There isn't.

The transparent door (6) includes a door glass (41) and a door glass (41).
) and a door handle (43) that is attached to the door sash (42) that clamps and reinforces the four sides of the door glass (41). It has the same slope as the sloped rod (22). Further, the door sash (42) that holds the sides of the door glass (41) is provided with a door side seal member (44) made of synthetic resin such as soft vinyl chloride to improve the degree of sealing when the door is closed. This door-side sealing member (44) has a wide groove extending from the top of the door (6) to the top of the part to which the door support (21) is connected so as to come into contact with the bottom of the side support (21) when the door is closed. a first seal part (45), a second seal part (46) formed so that the width gradually becomes narrower toward the bottom from the lower end of the first seal part (45), and a second seal part (45). (46) and a third seal part (47) whose width is narrowed over the entire lower part.

However, the third seal part (47) can also be omitted. (48) is a main body side sealing member provided on the side strut side, which is formed around the area where the door strut (60), which will be described later, is located when the door is closed;
A fourth seal part (49) is formed to wrap around the lower side and gradually become wider downward, and is located at the lower part of the side layer sash (42);
49) The third seal part (
47)! Alternatively, a fifth seal portion (50) that comes into contact with the lower surface of the side layer sash (42) is provided. Furthermore, the door sash (42) where the door handle (43) is installed is provided with a flexible shock absorbing member (51) in order to prevent the transparent door (6) from being damaged or destroyed by the impact when the door is closed. It is.

Figures 15 to 17 schematically show the positional relationship of the seal members when the transparent door (6) is in different open states. , only when the transparent door (6) is fully closed, and the second seal part (46
) and the fourth seal part (49), and the second seal part (49).
The seal part (46) of the fourth seal part (49) hardly slides relative to the fourth seal part (49).
) from above, and both seal parts (
46) There is no friction due to (49).

Moreover, since the first seal part (45) moves away from the lower part of the side support (21) downward from the state in which it is in contact with the lower part of the side support (21) at the same time as the transparent door (6) is opened, the first seal part (45) 4
Furthermore, the third seal part (47) is positioned on top of the fifth seal part (50) when the door is closed, and the fifth seal part (50) is removed at the same time as the door (6) is opened. (50)
The third seal part (4) moves upward and away from the
7) and the fifth seal portion (50). In this way, the door side seal member (44) and the main body side seal member (48)
), there is no friction associated with opening and closing the door (6).
There is no generation of dust due to friction of the sealing member, and no dust is spread onto the products being sold, allowing sales to be carried out in sanitary conditions.

Next, we will explain the holding structure that allows the transparent door (6) to rotate relative to the freezer showcase body (1). (
60) is the side door sash (42) in the transparent door 6)
A door support formed in a hollow shape with one end vertically attached to the lower surface and the other end rotatably fixed to the refrigeration showcase main body (1), with a rotating shaft (64 described later) at the bottom of the negative side.
A notch (61) is formed in advance for the insertion thereof. (
Reference numeral 62) is an auxiliary arm that is inserted and fixed into the cavity of the door support (60) and operates together with the door support (60), and has a built-in play angle ensuring means (63). Means for securing play angle (
63) is a cam (63) in which a rotating shaft (64) having a substantially square cross section is fixed to its base and tapers away from the base.
65) and a rotation shaft (64) having a substantially square cross section, the rotation shaft (64) is inserted through the rotation shaft (64), and the auxiliary arm (
When the two sleeves (67>(67) and the transparent door (6) are rotated, the auxiliary arm (62) rotates, but the cam (65) does not rotate. In order to define a free range, that is, a play angle of a rotation auxiliary member (69) to be described later, the play angle defining portion (68) allows the auxiliary arm (62) to freely rotate.
9) is a rotation auxiliary member that has a bearing that pivots the rotation shaft (64) and restricts the rotatable range of the rotation shaft (64), and is in a normal position (the diagonal of the cross section of the rotation shaft (64) is vertical). 3 in one direction from the state of facing the direction
A rubber spring is configured to form a rotatable region by 0° and 30° in the other direction, and the restoring force in the direction opposite to the direction of rotation gradually increases as the rotation angle from the normal position increases. The product name is "Rostar" (Miki pulley). (70) is located below the side breaker (18) and is a rotation assisting member (69) (hereinafter referred to as Rosta).
It is a fixing member for fixing the Roster (69), and includes a storage chamber (71) for storing the roster (69), and a reinforcing plate (72) embedded in the heat insulating material (4) to improve strength. A screw (73) for rotatably fixing the rotating shaft (64) is provided on the back wall of the storage chamber (71). (74) is a roster (
69) in the storage room (71), the roster (69) is stored in the storage room (71).
) is not visible from the outside and is a roster cover that presses and fixes the roster (69). The aforementioned auxiliary arm (6
2) The play angle securing means (63) and the roster (69) constitute a rotating device.

Here, the opening/closing operation of the transparent door (6) will be explained with reference to FIGS. 23 to 28. The explanation will be made assuming that the tip of the cam (65) faces vertically when the bearing of the rotor (69) is in a steady position. FIG. 23 is a schematic diagram of the rotating device with the transparent door <6) closed, and the tip of the cam (65) in this state is at an angle A (<30 °), the restoring force in the opposite direction to the direction of rotation of Roster (69) from its normal position when rotated by angle A is applied to the auxiliary arm (62).
working against

Then, from this state, gradually open the transparent door (6),
The auxiliary arm (
62) is rotated as shown in Fig. 24, and the rotation angle of the arm (62) from the fully closed state of the door (6) is C (-A). At this time, the restoration of the roster (69) Since the force is zero and the auxiliary arm (62) can freely rotate from this point, the position of the center line of the auxiliary arm (62) at this time is referred to as the starting point of the free arm section.

Subsequently, when the opening degree of the transparent door (6) is gradually increased, the play angle defining portion (68) gradually leaves the state where it is in contact with the left side surface of the cam (65) in FIG. 24, and the auxiliary arm (62) The only rotational movement is When this rotation angle becomes angle B from the starting point of the free arm section, assuming that the center line of the arm (62) overlaps the center line of the cams (65) and (7) in the normal position, then from the starting point to the auxiliary arm ( The rotation angle up to the end point of the rotation operation of only 62) (the position of the center line of the arm (62) at this time is referred to as the end point of the free arm section) is 2B. At this time, the play angle regulating portion (68) is connected to the cam (6
2) comes into contact with the right side surface.

From this state, when the opening degree of the transparent door (6) is further increased, the cam (65) also rotates along with the rotation of the auxiliary arm (62). By increasing the rotation angle, the restoring force acting in the opposite direction to the rotation direction from the normal position by the roaster (69) increases. In other words, from the end of the free arm section to the fully open state, as the opening angle of the door (6) increases, the restoring force acting in the direction of closing the door (6) increases, and the door When (6) hits stopper (27)! 7a The force is made smaller.

Here, the rotation angle of the auxiliary arm (62) from the end point of the free arm section to the fully open state is E, the rotation angle from the fully open state to the fully open state is F, and the rotation angle from the fully closed state to the steady state. If the rotation angle from the 01 steady state to the fully closed state is H, then G>H is selected. This means that when opening and closing the transparent door (6), the opening action that applies a force in a direction that opposes gravity and the closing action that applies a force in the same direction as the direction of gravity have the same amount of force. Even if the opening action is added, the opening action feels heavier to the human sense than the closing action, so the opening action and the closing action are made to be approximately the same, or the opening action feels easier. For this purpose, the roster (69
) The rotation angles G and H are selected so that the restoring force of the rotor (69) in the fully open state is greater than the restoring force of the rotor (69), and the influence of gravity can be ignored. For reference, the selected angles in this example are A-C-26°, B-1
8°, D-C+2B-62@, E-sleeve 76@, F key E-D
-14@, G-C+B-44°H-E-G-32°. The relationship between torque and rotation angle under this condition is shown in the 28th section.
Shown in the figure. It is assumed that the positive direction of the torque is the same as the direction of the force applied when closing the door. In this example, when comparing the torque required for the opening operation and the torque required for the room closing operation, it is clear that the torque required for the opening operation is smaller than the separation. Also the 28th
The shaded area in the figure is the torque that is reduced based on the restoring force of the rotor (69).

〔Effect of the invention〕

As described in detail above, according to the present invention, attention is paid to the rotational movement of a transparent door that is rotatably held, and a door-side sealing member is used as a sealing member for maintaining airtightness when the transparent door is closed. The transparent door is divided into two parts, the main body side sealing member and the main body side sealing member, and overlapped so that only the end of the door side sealing member is placed on the end of the main body side sealing member only when the transparent door is closed. Friction of the seal member due to rotation can be eliminated, suppressing deterioration of the seal member. In addition, by making the door side seal member overlap the main body side seal member,
Even if dew adhering to the bottom side of the transparent door drips down due to the slope of the door when it is closed, it will be transmitted from the bottom surface of the door-side seal member to the top surface of the main body-side seal member, reducing the amount of water from the door-side seal member into the refrigerator. It is possible to suppress water droplets from falling.

[Brief explanation of the drawing]

Each figure shows one embodiment of the present invention, and FIG. 1 is an external perspective view of a refrigeration showcase, and FIG.
A sectional view, FIG. 3 is an external perspective view of the front packing, FIG. 4 is a PP sectional view of FIG. 3, and FIG. 5 is an enlarged view of the part in FIG.
Figure 6 is a cross-sectional view taken along the line Q-Q in Figure 5, Figure 7 is a diagram showing the fluorescent lamp storage section attached to the 5150, and Figure 8 is a diagram showing the fluorescent lamp cover of Figure 7 removed. 9 is an enlarged view of the M section in FIG. 2, FIG. 10 is an exploded view of FIG. 9, FIG. 11 is an enlarged view of the M section in FIG. An abbreviated plan view of the transparent door, Fig. 13 is a plan view of the seal member on the main body side, Fig. 14 is a plan view showing how the seal members overlap, and Figs. 15 to 17 are views of the transparent door when the degree of opening is different. The schematic diagrams, Figures 18 to 20 are R-R in Figure 14, respectively.
21 is an exploded perspective view of the rotating device, FIG. 22 is a LL sectional view of FIG. 1, and FIGS. 23 to 27 are views of the rotating device. FIG. 28 is a schematic diagram showing the rotating state of the device, and is an explanatory diagram showing the rotating angle and torque. (1)...refrigeration showcase body, (5)...transparent window, (6)...transparent door, (7)...transparent part,
(16)...Front gasket, (18)...Side breaker, (19)...Protrusion, (20)...Drain hole, (21)...Side support, (22) ...slanted rod,
(23)... Horizontal rod, (24)... Side plate holding member, (25)... Locking part, (27)... Stopper, (33)... Placing member, (34)... ...Fluorescent light cover, (35)...Fluorescent light, (39)...Shade, (44)...Door side sealing member, (45)...
・First seal part, (46)...Second seal part, (
48) Main body side seal member, (49) Fourth seal part, (50) Fifth seal part, (60
)...Door support, (62)...Auxiliary arm, (63
)... Play angle ensuring means, (64)... Rotating shaft,
(65)...Cam, (67)...Sleeve, (68
)...Play angle regulation part, (69)...Rotation auxiliary member, (70)...Fixing member, (71)...Storage chamber, (72)...Reinforcement plate, (74) ...Roster cover.

Claims (1)

[Claims] 1. In a refrigeration showcase equipped with a transparent window and a rotatably held transparent door and a see-through part on the top thereof, an inclined rod that reinforces the see-through part and makes the same inclination when the transparent door is closed. a plurality of pillars having a main body side sealing member provided on each of the pillars, and door side sealing members provided on both left and right sides of the transparent door, and the door side sealing member is provided only when the transparent door is closed. A refrigeration showcase characterized in that an end of the member overlaps an end of a main body side sealing member.