JP3303512B2 - Showcase control box lid support structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variety of electronic and electrical devices including a refrigerator for refrigerated or frozen storage of products displayed and cooling the inside of a case having an open outer peripheral surface. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control box lid support structure for a showcase that includes a control device to be controlled and that can open and close an opening of a box-shaped control box that is supported by a case and has an open surface.

[0002]

2. Description of the Related Art In a showcase having a case in which goods displayed and displayed inside are refrigerated or frozen and provided with an open outer peripheral surface, a blower, an evaporator, etc., which are components of a refrigerator for cooling the inside of the case, are provided. Are generally arranged in the case. The components of the refrigerator, such as a condenser, a blower, and a compressor, are separately provided below or at a location away from the case. A control box for operating and controlling various electronic and electric devices including the devices constituting the refrigerator and incorporating control devices including the operating devices is supported by the case below the case. In such a showcase, the case is often transported while being supported from below by a forklift or the like. In this transport, it is necessary to consider that the control box supported on the lower surface of the case is not damaged.

[0003] Therefore, in order not to protrude from the outer peripheral surface,
In addition, the longitudinal direction of the rectangular box-shaped control box with a rectangular cross section and a built-in control device is oriented toward the front and back of the case so that the operating device can be operated through the top opening. At one of the left and right ends, it is supported in a pull-out manner so as to be movable back and forth. After the showcase has been installed on the installation surface, when performing maintenance work such as test operation and adjustment, the operation of the operation device is performed through the upper opening of the control box drawn forward. FIG. 4 shows a control box cover support structure of a conventional showcase. FIG. 4 shows a configuration of a control box cover support structure of a conventional showcase,
(A) is a left longitudinal sectional view, (B) is a perspective view of a main part viewed from the upper left front of (A), and (C) is an enlarged perspective view of the control box of (A) viewed from the upper right rear. (D) is a front vertical cross-sectional enlarged view of a main part at the lower left rear end of (C), and in (A) and (D), the right side of the figure is the front side.

[0004] In FIG. 4, reference numeral 1 denotes a case having an opening 2 which is largely open and opens to the upper surface. This case 1
The case body 3, which is formed of a heat insulating wall with both left and right side surfaces and an upper surface open, has a substantially U-shaped cross section, is supported along the inner peripheral surface of the case body 3 and spaced apart from each other. It comprises a substantially U-shaped partition wall 4 and side plates 5 that cover the left and right sides of the case body 3 and the partition wall 4.

A space in the case 1 surrounded by the side plates 5, the partition 4 and the case main body 3 forms a ventilation passage 6, and extends along both front and rear edges of the opening 2 at both ends of the ventilation passage 6. The openings which are open and whose opening surfaces face each other form a suction port 7 and an outlet 8 respectively. The front opening face of the outlet 8 is a honeycomb-shaped rectifying body 9 having both front and rear faces open, and the rear opening face of the suction port 7 is provided with a plurality of suction holes (not shown) formed in parallel on the left and right. Each is covered with a mouth cover 10. Further, a refrigerator 1 for cooling the inside of the case 1 is provided at a lower portion on the depth side in the ventilation path 6.
1, an evaporator 12, an air blower 13 for blowing air in the case 1 to the evaporator 12, and an electric heater 14 disposed between the air blower 13 and the evaporator 12. Is provided.

On the other hand, below the left end of the case 1 installed on the installation surface via the frame-shaped legs 15, a blower 13 and a heater 1 are provided.
A control box 18 having a built-in control device 17 including an operating device 16 for controlling various electronic / electric devices including the electronic / electric device constituting the refrigerator 11 and constituting a control circuit (not shown) Are arranged. This control box 18
The upper surface opening of the control box 18 is attached to the lower end of the front and rear ends of the control box 18 at the lower ends of the front and rear ends with screws 19 from the left and right sides, respectively, and is detachably supported on the control box 18. Cover 20.

The control box 18 is in the form of a rectangular box having a rectangular cross section with a long front and rear cross section. The upper end of the control box 18 is fixed to the lower surface of the left end of the case 1. It is inserted into a box-shaped support body 21 having an open top and front face, and is supported under the left end of the case 1 in a pull-out manner so as to be movable back and forth. In the control box 18, the control box 18
The control device 17 including the operation device 16 is disposed so as not to protrude from the outer peripheral surface of the control box 18, and is disposed so as to be operable through the upper opening of the control box 18. An electric wire 22 connecting various electronic and electric devices in the case 1 is drawn out from the control box 18.

The front surface of the case 1 has an inverted vertical longitudinal section.
It is covered with a front cap 23, a color band 24, a bumper rail 25, a front panel 26, a kick plate 27, and the like in a letter shape, a flat plate shape, or a U shape in order from the top. At the left end of the kick plate 27, the kick plate 27 is covered with a shield plate 29 whose lower end is rotatably supported via a rotating shaft 28 whose axis length direction is horizontal to the left and right. A horizontally long rectangular window 30 is formed therethrough.

In the control box cover support structure of the conventional showcase configured as described above, after the showcase is installed on the installation surface, maintenance work such as trial operation and adjustment is performed on the operating device 1.
When the control box 6 is operated, the control box 18 is pulled forward through the window 30 opened by opening the shielding plate 29. At this time, the electric wire 22 drawn out of the control box 18 must be pulled out within a range where it is not pulled and disconnected.
Although it cannot be pulled out from the case 1 and completely pulled out of the case 1, the control box 18 is removed through the upper opening of the control box 18 which is opened by unscrewing the screw 19 and removing the lid 20.

[0010] Further, an air blower 13 connects the air inlet 6 to the ventilation path 6.
The air in the case 1 sucked into the inside is cooled by the evaporator 12 to become cool air, a part of which is rectified by the rectifier 9 to form a laminar flow and blows out from the outlet 8, and the air curtain 3 covering the opening 2
1 is formed and the inside of the case 1 is kept cool. Then, another portion flows into the case 1 through a ventilation hole (not shown) formed in the partition wall 4 to cool the inside of the case 1, and is sucked again from the suction port 7 and circulated through the case 1. The circulation flow 32 cools and keeps the products displayed in the case 1.

[0011]

By the way, such a conventional control box cover support structure for a showcase is provided with a cover 20 for covering the upper opening of the control box 18 which is supported under the left end of the case 1 in a pull-out manner. The four corners of the lid 20 are screwed into the control box 18 with screws 19.
It is a structure that is screwed to and supported. And control box 1
Inside the control box 18, control devices 17 including operation devices 16 are arranged and incorporated so as not to protrude from the outer peripheral surface from the outer peripheral surface of the control box 18 and to be operable through the upper opening. Control device 17 in the case and electric wire 2 connecting various electronic and electric devices in the case 1
2 is drawn out of the control box 18.

As a result, the case 1 to which the front panel 26, the kick plate 27 and the like have not been mounted yet.
When transporting is carried from below with a forklift or the like (not shown), even in the case 1 having a narrow left and right width, the control box 18 is damaged due to the nails or the like of the forklift coming into contact with or being caught by the control box 18. The case 1 can be transported without the need.

However, after the showcase is installed on the installation surface, when maintenance work such as trial operation and adjustment is performed by operating the operation device 16 through the upper opening of the control box 18, the shielding plate 29 must be opened. To open the window 30
And pull out the control box 18 forward. At this time, case 1
The control box 18 cannot be completely pulled out of the case 1 and the four corners must be controlled since the electric wires 22 connecting the various electronic / electrical devices in the inside must be pulled out within a range where they are not pulled and disconnected. All screws 19 to be screwed to the four corners of the box 18 must be loosened and the lid 20 must be removed.

Therefore, it takes time and effort to operate the operating device 16 through the upper opening of the control box 18.
When the lid 20 is removed, a tool such as a screwdriver for loosening the screw 19 is required, and the work of loosening the screw 19 with this tool is very difficult because the control box 18 cannot be completely removed from the case 1. There is. The present invention
An object of the present invention is to provide a control box cover support structure for a showcase, in which a lid can be quickly opened to open a control box opening and test operation and adjustment can be performed quickly and maintenance work is easy.

[0015]

In order to solve the above-mentioned problems, according to the present invention, there is provided a refrigerator for refrigerated or frozen storage of products displayed and displayed therein to cool the inside of a case having an open outer peripheral surface. A control box having a built-in control device for operating and controlling various electronic and electrical devices including a device, a control box having a top surface opened and supported so as to be able to be drawn back and forth so as to be movable back and forth at the front lower portion of the case. In a control box cover support structure for a showcase that supports a cover to be openable and closable on the control box, the cover is rotatably supported at one end thereof via a rotation shaft formed at a rear end of the control box. The other end is a lid fastened to the front end of the control box with a screw.

Further, a control device for operating and controlling various electronic / electric devices including a device constituting a refrigerator for refrigerated or frozen storage of products displayed and displayed therein and cooling the inside of a case having an open outer peripheral surface. A control box having a control box having an upper surface opened so as to be movable back and forth in the front lower part of the case, and a cover for covering the opening of the control box is supported by the control box so as to be openable and closable. In the control box lid support structure, the lid is rotatably supported at one end via a rotation shaft formed at the rear end of the control box, and the other end of the lid and the front end of the control box are On one side, a projection protruding from one side toward the other is formed, and on the other side, a fitting portion to which the projection fits is formed.

[0017]

[0018]

According to the present invention, the end of the same side of the lid is rotatably supported at the end of the control box on the side opposite to the outer surface side of the case via the stepped screw forming the rotation shaft. By doing so, even if the control box cannot be completely removed from the inside of the case through the window, use a tool such as a screwdriver to loosen the screw and easily remove it, or remove the protrusion from the fitting part, and turn the lid. The opening of the control box can be quickly opened and closed by moving the lid, and when the lid needs to be removed, the lid can be removed by loosening and removing the stepped screw.

[0019]

[0020]

[0021]

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a configuration of a control box cover support structure of a showcase according to one embodiment of the present invention, and FIG.
Is a perspective view of the control box whose upper surface opening is covered with a lid, as viewed from the upper right rear, and FIG. 3A and 3B are enlarged front vertical cross-sectional views of a main part of a right front end portion, and in FIGS. FIG. 2 shows a configuration of a control box cover support structure of a showcase according to a different embodiment of the present invention. FIG.
(B) is an enlarged front vertical cross-sectional view of a main part of a right rear end portion of (A),
(C) is an enlarged front vertical sectional view of a main part of the right front end of (A),
In (B) and (C), the right side of the figure is the front side. 3A and 3B show the configuration of a showcase to which the present invention is applied. FIG. 3A is a left vertical cross-sectional view, and FIG. 3B is a perspective view of the main part of FIG. The right side of the figure is the front side. 4 are denoted by the same reference numerals, and description thereof may be omitted.

1 and 3, reference numeral 1 denotes a case which has an opening 2 which is largely open and opens to the upper surface. The case 1 is made up of a case body 3, a partition 4, and both right and left sides of the case body 3 and the partition 4. It consists of a side plate 5 that covers the surface. A space in the case 1 surrounded by the side plates 5, the partition walls 4 and the case body 3 forms a ventilation path 6, and openings at both ends of the ventilation path 6 form a suction port 7 and an air outlet 8, respectively. . The forward opening surface of the outlet 8 is rectified 9
In addition, the rear opening surface of the suction port 7 is
In the lower part on the depth side in the ventilation path 6, a refrigerator 11 and a blower 13 and evaporator 12 which are constituent devices are provided.
In addition, the heaters 14 are arranged in front and rear in parallel with the heater 14 as a center, and the above is not different from the above-described conventional example.

On the other hand, below the left end of the case 1 installed on the installation surface via the legs 15, various electronic and electric devices including the electronic and electric devices constituting the refrigerator 11 such as the blower 13 and the heater 14 are controlled. A control circuit (not shown),
A control box 17a is provided in FIG. 1 and a control box 18a is provided in FIG.
b. These control boxes 18a, 18b
Each upper opening is screwed to the lower end of the rear end with a stepped screw 33 forming a rotation axis from the left and right sides, and the rear end is rotatable with respect to each of the control boxes 18a and 18b. And lids 20a, 20b detachably supported
Each is covered.

The lower end of the front surface of the lid 20a is screwed to the control box 18a from both left and right sides with screws 19, and the lid 20b
At the lower end of the front surface of the control box 18b, a projection 34 protruding from the inner surface of the lid 20b in a direction approaching to each other, and a hole through which the control box 18b penetrates the control box 18b in the left-right direction is fitted. The portions 35 are formed on the left and right sides, respectively.

An upper end of a support 21 is fixed to the lower surface of the left end portion of the case 1, and the control box 18a, 18b is inserted into the support 21 so that the control boxes 18a and 18b can be moved back and forth in a drawer type. Each is supported below the left end. In the control boxes 18a and 18b, the control boxes 18a and 18b do not protrude from the outer peripheral surface.
The control device 17 including the operation device 16 is incorporated therein so that the operation device 16 can be operated through the upper opening of the device. In addition, the control device 17 in the control boxes 18a and 18b and the electric wire 22 connecting various electronic and electric devices in the case 1 are drawn out from the control boxes 18a and 18b, respectively.

The front surface of the case 1 is covered with a front cap 23, a color band 24, a bumper rail 25, a front panel 26, a kick plate 27 and the like in order from the top. At the left end of the kick plate 27, a window 30 is formed on the kick plate 27, which is openably and closably covered with a shielding plate 29 whose lower end is rotatably supported via a rotating shaft 28 and penetrates back and forth. The other configuration is the same as that of the above-described conventional example.

In the above-described configuration, in the showcase of the present invention having the control box cover support structure of the above-described configuration of the showcase, air in the case 1 sucked into the ventilation path 6 from the suction port 7 by the blower 13. Is the same as that of the conventional example described above, and the description thereof will be omitted. For each of the embodiments shown in FIGS.
An operation procedure including an opening and closing operation of the lids 20a and 20b and a function of each part at the time of maintenance work such as adjustment will be described below.

In the embodiment of the present invention shown in FIG. 1, the operation procedure for performing maintenance work such as trial run and adjustment of the showcase by operating the operating device 16 is as follows. First, the shielding plate 29 is opened. Next, the control box 18a is pulled forward through the window 30 opened as far as the wires 22 drawn from the control box 18a are not pulled and disconnected, and the lower end of the front end of the lid 20a is screwed to the control box 18a. Loosen screw 19 to remove. Then, the lid 20a is rotatable around the stepped screw 33 constituting the rotation axis.
By operating the operating device 16 through the upper opening of the control box 18a opened by rotating and holding the a, the maintenance work such as trial run and adjustment of the showcase can be performed. After the maintenance work is completed, the lid 20a, the control box 18a, and the shielding plate 29 can be returned to the original positions by operating in the reverse order.

In the different embodiment of the present invention shown in FIG. 2, when the operation device 16 is operated to perform a trial run, adjustment, and the like of the showcase, first, the shielding plate 29 is opened. next,
The control box 18b is opened through the window 30 opened by this.
The width of the lower end of the front end of the lid 20b is increased to the left and right within the elastic limit of the material of the lid 20b, in a range where the electric wires 22 drawn from the control box 18b are not pulled and disconnected. Then, the projection 34 that fits into the fitting portion 35, which is a hole, and locks the lower end of the front end of the lid 20b to the control box 18b comes off from the fitting portion 35, and the lid 20b is turned around the stepped screw 33 as an axis. Since it becomes movable, the operating device 16 can be operated through the upper opening of the control box 18b which is opened by rotating and holding the lid 20b to perform a test run, adjustment, and the like of the showcase. After the maintenance work is completed, the lid 20b, the control box 18
b and the shielding plate 29 can be returned to the original position.

That is, in each of the embodiments of the present invention shown in FIGS. 1 and 2, the control box 18a, 18b pulled out through the window 30 is provided with a lid 20 at the lower end of the front end.
screws 1 for screwing the lower ends of the front ends of the a and 20b
By loosening the lock 9 or removing the locking projection 34, the lids 20a and 20b can be rotated around the stepped screw 33.

Therefore, when the control boxes 18a and 18b are pulled out, the screws 19 and the projections 34, which can be easily loosened and removed, are used in the embodiment of FIG. In the embodiment of FIG.
The width of the lower end of the front end portion of the lid 20b can be widened right and left by hand, and each can be easily removed. Therefore, in the embodiment of FIG. 1, a tool such as a tri-bar is required, but in any of the embodiments, during maintenance work, the upper openings of the control boxes 18a and 18b are quickly opened without any trouble and the operation equipment 16 is opened. Can be operated, and maintenance work can be performed quickly.

[0033]

According to the present invention, various kinds of electronic / electrical equipment including equipment constituting a refrigerator for refrigerated or frozen storage of goods displayed and displayed therein and cooling the inside of a case having an open outer peripheral surface are provided. Built-in control equipment to operate and control,
A control box lid support structure for a showcase that includes a control box that is supported at the lower front part of the case so as to be able to be pulled out forward and has an open top surface, and a cover that covers an opening of the control box is openably and closably supported by the control box. A lid whose one end is rotatably supported by the rear end of the control box is fastened to the front end of the control box by a screw at the other end, or one of the other end of the lid and the front end of the control box. Has a projection that projects from one side to the other, and has a fitting portion on which the projection fits, or a lid that is rotatably supported via a rotation shaft. Even if the control box cannot be completely removed from the inside of the case through the window, use a tool such as a screwdriver to loosen the screws and remove the projections from the fittings. To easily open the control box opening Can, As a result, it is possible to quickly perform maintenance work without the hassle.

[0034]

As a result, when maintenance work such as trial operation and adjustment is performed by operating the operating device in the control box, the lid is opened to open the opening of the control box, and when the lid is opened by rotating the lid, the rotation of the lid is performed. Remove half of the screws or projections supporting the end opposite to the dynamic support side using a tool such as a screwdriver or by hand without a tool, and rotate the lid to open the opening of the control box. The effect of being able to provide a control box cover support structure for a showcase that can be quickly opened and that can be easily maintained is obtained.

[Brief description of the drawings]

FIG. 1 shows a configuration of a control box cover support structure of a showcase according to one embodiment of the present invention, and FIG. Perspective view,
(B) is an enlarged front vertical cross-sectional view of the main part of the right rear end of (A),
(C) is an enlarged front longitudinal sectional view of a main part of the right front end of (A).

FIGS. 2A and 2B show a configuration of a control box cover support structure of a showcase according to a different embodiment of the present invention, wherein FIG. (A) is an enlarged view of a main part front vertical section of a right rear end part of (A), and (C) is an enlarged view of a main part front vertical section of a right front end part of (A).

3A and 3B show the configuration of a showcase to which the present invention is applied, wherein FIG. 3A is a left vertical sectional view, and FIG. 3B is a perspective view of a main part of FIG.

4A and 4B show a configuration of a control box cover support structure of a conventional showcase, in which FIG. 4A is a left vertical cross-sectional view, FIG. 4B is a perspective view of a main part of FIG. () Is an enlarged perspective view of the control box of (A) as viewed from the upper right rear, and (D) is an enlarged front vertical cross-sectional view of the lower part of the left rear end of (C).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 2 Opening 3 Case main body 4 Partition wall 5 Side plate 6 Ventilation path 7 Inlet 8 Outlet 9 Rectifier 10 Suction port cover 11 Refrigerator 12 Evaporator 13 Blower 14 Heater 15 Leg 16 Operating equipment 17 Control equipment 18, 18a, 18b Control box 19 Screw 20, 20a, 20b Lid 21 Support 22 Electric wire 23 Front cap 24 Color band 25 Bumper rail 26 Front panel 27 Kick plate 28 Rotating shaft 29 Shielding plate 30 Window 31 Air curtain 32 Circulating flow 33 Step screw (Rotating axis) 34 Projection 35 Fitting part

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F25D 29/00 A47F 3/04

Claims (2)

(57) [Claims] 1. A control device for operating and controlling various electronic / electric devices including a device constituting a refrigerator for refrigerated or frozen storage of products displayed and displayed therein and cooling a case having an open outer peripheral surface. A control box having a control box having an upper surface opened so as to be movable back and forth in the front lower part of the case, and a cover for covering the opening of the control box is supported by the control box so as to be openable and closable. In the control box lid support structure, a lid is rotatably supported at one end via a rotation shaft formed at a rear end of the control box, and the other end is fastened to a front end of the control box with a screw. A control box cover support structure for a showcase, characterized by a closed cover. 2. A control device for operating and controlling various electronic and electric devices, including a device constituting a refrigerator for refrigerated or frozen storage of products displayed and displayed therein and cooling the inside of a case having an open outer peripheral surface. A control box having a control box having an upper surface opened so as to be movable back and forth in the front lower part of the case, and a cover for covering the opening of the control box is supported by the control box so as to be openable and closable. In the control box lid support structure, the lid is rotatably supported at one end via a rotation shaft formed at the rear end of the control box, and the other end of the lid and the front end of the control box are A control box cover support structure for a showcase, wherein a projection is formed on one of the projections from the one toward the other, and a fitting portion for fitting the projection is formed on the other.