JP2021034547A - Mounting structure for control panel - Google Patents

Abstract

To prevent a liquid such as water which enters a casing from a gap between a front wall of the casing and a control panel, from splashing on an electrical component disposed at a rear face side of the control panel, without reducing a strength of the casing.SOLUTION: In a vacuum packaging machine 10, a casing 11 and a control panel 70 comprise a casing-side opposed part 14c and a control-panel-side opposed part 73a which are opposed to each other at an upper side of an opening 14b. A seal member 80 which extends in a width direction of the control panel 70, adheres the casing-side opposed part 14c and the control-panel-side opposed part 73a, and regulates a flow of a liquid from an upper side of the casing-side opposed part 14c and the control-panel-side opposed part 73a to the opening 14b is interposed between the casing-side opposed part 14c and the control-panel-side opposed part 73a. A length in a length direction of the seal member 80 is set longer than a length in a width direction of the opening 14b.SELECTED DRAWING: Figure 6

Description

The present invention relates to an operation panel mounting structure in which an operation panel is mounted on the front wall of a casing of equipment such as a vacuum packaging machine, an ice maker, a refrigerator, and a cooking cooker.

Patent Document 1 below discloses a vacuum packaging machine that vacuum-packs a packaging bag containing an object to be packaged such as foodstuffs and cooked foods. This vacuum packaging machine includes a chamber composed of a chamber base and a chamber cover on the upper part of the casing, a heat sealing device provided in the chamber and sealing the peripheral edge of the opening of the packaging bag by heat welding, and a lower part of the casing. It is equipped with an oil circulation type oil rotary vacuum pump that degass the inside of the chamber and creates a negative pressure. In this vacuum packaging machine, the inside of the chamber is degassed by an oil rotary vacuum pump to create a negative pressure, and the periphery of the opening of the packaging bag housed in the chamber is sealed by a heat sealing device. Is sealed in a degassed state. In addition, an operation panel is attached to the front wall of the casing, and the operation panel inputs the selection or setting operation of the packaging program of the vacuum packaging machine.

In the mounting structure of the operation panel, the front wall of the casing has an opening for arranging the control board mounted on the rear surface of the operation panel in the casing and a position facing the upper part of the operation panel above the opening in the width direction. It has a long hole that extends to. Further, a ridge portion protruding into the elongated hole is provided on the upper portion of the rear surface of the operation panel at a position below the upper end, and the ridge portion is made longer than the length in the width direction of the control board. According to the mounting structure of the operation panel, it is possible to prevent a gap from being formed between the casing and the operation panel, and to prevent water and dust from entering the casing through the elongated holes as much as possible. Further, even if water flows into the casing from the elongated hole through a slight gap between the upper edge of the operation panel and the front wall of the casing, the ridge portion prevents the control board from being exposed to water. There is.

Japanese Unexamined Patent Publication No. 2018-60915

In the above operation panel mounting structure, liquids such as water that have infiltrated between the front wall of the casing of the equipment and the operation panel and passed through the opening do not come into contact with electrical components such as the control board mounted on the rear surface of the operation panel. Although it can be prevented (not reaching), since the front wall of the casing is provided with an elongated hole extending in the lateral width direction, the front wall of the casing and thus the strength of the casing may be lowered. The present invention prevents liquids such as water that have entered between the front wall of the casing and the operation panel from being applied to the electrical components arranged on the rear surface side of the operation panel without causing a decrease in the strength of the casing. The purpose.

In order to solve the above problems, the present invention has an operation panel mounting structure in which an operation panel is mounted on the front wall of a casing of an apparatus, and an electrical box (electrical component) mounted on the rear surface of the operation panel on the front wall of the casing. The casing and the operation panel are provided with a casing-side facing portion and an operation panel-side facing portion facing each other on the upper side of the opening, respectively. It extends along the width direction of the operation panel between the operation panel side facing portion, and the casing side facing portion and the operation panel side facing portion are in close contact with each other, and the casing side facing portion and the operation panel side facing portion are in close contact with each other. An operation panel mounting structure characterized in that a sealing member that regulates the inflow of liquid from the upper side of the opening to the opening is interposed, and the length of the sealing member in the longitudinal direction is set longer than the length in the width direction of the opening. Is to provide.

In the operation panel mounting structure configured as described above, the seal member is in close contact with the casing side facing portion and the operation panel side facing portion facing each other on the upper side of the opening provided in the front wall of the casing, and is on the casing side. Control the flow of liquid from the upper side of the facing portion and the operating panel side facing portion to the opening. As a result, it is possible to prevent liquid such as water (liquid that has entered from the outside) that has entered from between the upper edge of the operation panel and the front wall of the casing of the device from flowing into the region directly below the sealing member. As a result, it is possible to prevent the liquid that has entered from the outside from reaching the opening located directly under the sealing member, and by extension, the liquid that has entered from the outside does not reach (do not reach) the electrical box attached to the rear surface of the operation panel. Can be. Further, since the length of the seal member in the longitudinal direction is set longer than the length of the opening in the width direction, the seal member can cover the opening from above over the entire length in the width direction. As a result, even if the liquid that has entered from the outside flows down from both ends of the seal member, it can be surely suppressed from flowing into the opening located directly under the seal member, and the liquid that has flowed down from both ends of the seal member is opened. It is possible to more reliably suppress the contact with the electrical box attached to the rear surface of the operation panel through the portion. As described above, the above-mentioned operation panel mounting structure is provided with an elongated hole in the front wall of the casing as in the prior art, only by interposing a seal member between the casing side facing portion and the operation panel side facing portion. It is possible to prevent the liquid infiltrated from the outside from being applied to the electrical components without having the structure, that is, without causing a decrease in the strength of the casing.

In the operation panel mounting structure configured as described above, it is preferable to provide a positioning structure for positioning the seal member at at least one of the casing side facing portion and the operation panel side facing portion. In this case, the seal member can be positioned at a desired position with a relatively simple configuration.

Further, the positioning structure extends along the extending direction of the seal member, and the operation panel side ridge portion and / or the seal member projecting from the operation panel side facing portion toward the casing side facing portion. It is preferably composed of a casing-side ridge portion that extends along the extension direction and projects from the casing-side facing portion toward the operation panel-side facing portion. In this case, not only the seal member can be positioned at a desired position, but also the crushing allowance of the seal member can be appropriately adjusted, and a desired seal effect can be obtained. Further, by providing the ridge portion, the strength of the operation panel and / or the casing can be increased. Further, when the operation panel and / or the casing is manufactured by molding a resin material, the warp of the operation panel and / or the casing can be suppressed by providing the ridge portion.

Further, the operation panel side ridges are a pair of ridges provided so as to face each other with the seal member interposed therebetween, and the casing side ridges are a pair of ridges provided facing each other with the seal member interposed therebetween. It is preferably a casing. In this case, the seal member can be more reliably positioned at a desired position with a relatively simple configuration.

In addition, a waterproof wall portion that protrudes downward in a U-shape that opens downward from a portion that is the rear surface of the operation panel and is below the portion facing the operation panel side is provided, and the waterproof wall portion is provided on the upper surface and the upper side surface of the electrical box. It is preferable to provide it so as to cover the above. In this case, even if the liquid that has entered from the outside flows down from both ends of the sealing member, the liquid that has flowed down reaches the waterproof wall portion, but flows down along the outer peripheral surface of the waterproof wall portion, so that it is waterproof. It is possible to reliably prevent the electrical box located below the wall from being reached.

It is a perspective view which shows one Embodiment of the vacuum packaging machine which adopted the mounting structure of the operation panel of this invention. It is a perspective view of the state which opened the chamber cover of FIG. It is a cross-sectional view of AA. It is a BB sectional view. It is a schematic diagram of a vacuum packaging machine. It is a cross-sectional part enlarged view of AA. It is a perspective view which looked at the operation panel of FIG. 1 from the back side. It is the AA cross-sectional part enlarged view which concerns on the modification of the vacuum packaging machine which adopted the mounting structure of the operation panel of this invention.

Hereinafter, an embodiment of a vacuum packaging machine adopting the operation panel mounting structure of the present invention will be described with reference to the accompanying drawings. As shown in FIGS. 1 to 4, the vacuum packaging machine 10 (equipment) adopting the operation panel mounting structure of the present invention has a central portion of the chamber cover 22 in the left-right direction (direction along the BB line). Protrudes so as to bulge upward, and a packaging bag containing a high object to be packaged such as block meat can be accommodated in the chamber 20. The vacuum packaging machine 10 includes a chamber 20 provided in the upper part of the casing 11, a sealing device 30 for sealing the opening peripheral edge of the packaging bag in the chamber 20, and a lower portion of the casing 11 below the chamber 20. It is provided with a vacuum pump 40 that degass the inside of the chamber 20 to create a negative pressure.

As shown in FIGS. 1 to 4, the casing 11 has a substantially rectangular parallelepiped shape, and a chamber 20 is provided above the casing 11. The casing 11 includes a base plate 12 that forms a bottom wall, and peripheral walls 13 that form front, rear, and left and right side walls. The lower part of the casing 11 is a machine room in which the vacuum pump 40 and the like are arranged on the upper side of the base plate 12, and the upper side of the base plate 12 of the casing 11 is closed by the chamber 20.

The peripheral wall 13 is divided into a front side portion 14 including a front wall 14a and a rear side portion 15. The front side portion 14 and the rear side portion 15 are each formed in a U shape, and the openings are arranged so as to face each other. An operation panel 70, which will be described later, is attached to the front wall 14a of the peripheral wall 13. The front wall 14a is formed with an opening 14b that opens at a position where the operation panel 70 is attached, and the opening 14b arranges an electrical box 60 attached to the rear surface of the operation panel 70 in the casing 11. As shown in FIG. 6, the operation panel 70 has a substantially rectangular shape larger than the opening 14b when viewed from the front, and the upper portion of the opening 14b of the front wall 14a faces the upper portion of the operation panel 70 on the casing side. The portion 14c is formed, and the portion of the operation panel 70 facing the casing side facing portion 14c and the front side is the operating panel side facing portion 73a. A seal member 80, which will be described later, is provided between the casing-side facing portion 14c and the operation panel-side facing portion 73a.

As shown in FIGS. 1 to 4, the chamber 20 includes a chamber base 21 and a chamber cover 22 provided on the upper part of the casing 11, and the upper side of the chamber base 21 is closed by the chamber cover 22 so as to be openable and closable. A closed space for accommodating the packaging bag is formed in the chamber.

As shown in FIG. 2, the chamber base 21 has a shallow box shape having a substantially rectangular parallelepiped shape with an open upper surface, and is formed by pressing a sheet metal member such as stainless steel. As shown in FIG. 3, a step portion 21a formed shallower than the other portions is formed in the front portion of the chamber base 21, and a lower block constituting the sealing device 30 is formed above the step portion 21a. 31 is provided so as to be movable up and down.

As shown in FIG. 4, the portion of the chamber base 21 other than the step portion 21a is curved so that the central portion in the left-right direction is the lowest, and the packaging bag accommodated in the chamber 20 is the lowest left and right. It is easy to place in the center of the direction. Since the packaging bag is placed in the center in the left-right direction in the chamber 20, the opening peripheral edge of the packaging bag is placed on the center portion in the left-right direction of the lower block 31. Further, when a high-height object to be packaged such as block meat is placed in the packaging bag, the packaged object in the packaging bag is placed in the chamber 20 in order to prevent wrinkles from being generated at the peripheral edge of the opening of the packaging bag. It is placed in the middle portion in the front-rear direction (direction along the AA line) as a position separated from the lower block 31 arranged in the front portion of the above to the rear side.

As shown in FIGS. 1 and 2, the chamber cover 22 uses a transparent material such as a pressure-resistant acrylic material, a polycarbonate material, or a polyethylene terephthalate material that opens and closes the upper surface opening of the chamber base 21 so as to be openable and closable. It is a lid and forms a closed space for accommodating a packaging bag with the chamber base 21. The rear end portion of the chamber cover 22 is rotatably supported on the rear end portion of the casing 11 around the horizontal axis, and the front portion of the chamber cover 22 is rotatable up and down. As shown in FIG. 1, the chamber cover 22 is in a closed position that closes the upper surface opening of the chamber base 21 when it is in the horizontal position. As shown in FIG. 2, when the front portion of the chamber cover 22 is rotated upward, the chamber cover 22 is in an inclined position and is in an open position in which the upper surface of the chamber base 21 is opened.

As shown in FIGS. 2 and 3, a gas spring 16 is provided at the rear portion of the casing 11, the gas spring 16 urges the front portion of the chamber cover 22 upward, and the chamber cover 22 is used as a chamber. It is urged to the open position to be released from the base 21. As shown in FIGS. 2 to 4, a rubber packing 23 is provided as a sealing member on the peripheral edge of the lower surface of the chamber cover 22, and the packing 23 is in the closed position when the chamber cover 22 is closed. The chamber base 21 and the chamber cover 22 are hermetically sealed.

As shown in FIGS. 1, 3 and 4, the chamber cover 22 has a flat portion 22a having a flat plate shape on both sides in the left-right direction and a flat portion 22a protruding upward in the central portion in the left-right direction. It is provided with a protruding portion 22b. Further, a rising portion 22c that rises from the flat portion 22a to the protruding portion 22b is formed between the flat portion 22a and the protruding portion 22b. The lower surface of the flat portion 22a has a height that abuts on the upper edge portion of the chamber base 21, and covers both the left and right side portions of the chamber base 21.

As shown in FIGS. 1 and 2, a stopper 17 is rotatably provided at the front end of the right side surface of the casing 11 around the horizontal axis, and the stopper 17 is locked to the upper surface of the front portion of the chamber cover 22. Therefore, it has a function of holding the chamber cover 22 at a position of closing the upper surface opening of the chamber base 21.

As shown in FIG. 5, a cover detector 18 for detecting the closed state of the chamber cover 22 is provided at the rear portion of the casing 11. The cover detector 18 uses a proximity switch such as a reed switch, and a magnet 19 for detecting the closed state of the chamber cover 22 by the cover detector 18 is provided at the rear portion of the chamber cover 22. When the chamber cover 22 is in the closed position to close the upper surface opening of the chamber base 21, the magnet 19 is close to the cover detector 18, and the cover detector 18 outputs an ON signal. When the chamber cover 22 is in the open position to open the upper surface opening of the chamber base 21, the magnet 19 is separated from the cover detector 18, and the cover detector 18 outputs an off signal.

As shown in FIGS. 2, 3 and 5, a sealing device 30 is provided at the front portion of the chamber 20. The sealing device 30 seals the packaging bag by heat-welding the peripheral edge of the opening of the packaging bag housed in the chamber 20. The sealing device 30 includes lower and upper blocks 31 and 32 that sandwich the peripheral edge of the opening of the packaging bag. The lower block 31 is made of a square pipe member made of aluminum, and is supported on the upper side of the step portion 21a of the chamber base 21 so as to be detachable and movable up and down. A strip-shaped heater 33 made of a nichrome material is provided on the upper surface of the lower block 31. The upper block 32 is made of an elastically deformable silicon block body, and is attached to the lower front portion of the chamber cover 22 at a position facing the upper side of the lower block 31.

As shown in FIGS. 3 and 5, a pair of left and right elevating mechanisms 34 for raising and lowering the lower block 31 up and down are provided on the lower surface of the step portion 21a of the chamber base 21. Each elevating mechanism 34 includes a support shaft 35 penetrating the bottom wall of the step portion 21a of the chamber base 21, and an elevating cylinder 36 for moving the support shaft 35 up and down. As shown in FIG. 5, a flange portion 37 is provided in the intermediate portion of the support shaft 35 in the axial direction, and the flange portion 37 airtightly divides the inside of the elevating cylinder 36 into an upper space 36a and a lower space 36b. There is. A spring member 38 is interposed around the outer periphery of the support shaft 35 in the upper space 36a of the elevating cylinder 36, and the spring member 38 urges the support shaft 35 downward via the flange portion 37.

As shown in FIG. 5, a vacuum pump 40 is provided in the lower part of the casing 11. The vacuum pump 40 mainly sucks the air in the chamber 20 and exhausts the air in the closed space in the chamber 20 to create a negative pressure in the chamber 20. A suction pipe (suction path) 41 for connecting the vacuum pump 40 and the chamber 20 is provided in the casing 11, and a vacuum valve 42 is interposed in the suction pipe 41. The air in the chamber 20 can be sucked into the vacuum pump 40 by opening the vacuum valve 42.

An outside air introduction pipe 43 for introducing outside air is connected to the suction pipe 41 between the chamber 20 and the vacuum valve 42, and the outside air introduction pipe 43 is branched from the first pipe portion 43a and the first pipe portion 43a. It is provided with two pipe portions 43b. The first and second pipe portions 43a and 43b are provided with first and second outside air introduction valves 44 and 45 for opening and closing them. The first outside air introduction valve 44 has a larger valve diameter than the second outside air introduction valve 45, and when the first outside air introduction valve 44 is opened, the outside air is introduced into the chamber 20 quickly, and the second outside air introduction valve 45 is introduced. When opened, outside air is slowly introduced into the chamber 20.

A pressure detection pipe 46 is connected to the suction pipe 41 via a first pipe portion 43a of the outside air introduction pipe 43, and the pressure detection pipe 46 is provided with a vacuum gauge 47 for detecting the pressure in the chamber 20. When the inside of the chamber 20 is not degassed by the vacuum pump 40, the pressure in the chamber 20 detected by the vacuum gauge 47 is 100 kPa (abs), which is the same as the atmospheric pressure, and the degree of vacuum at this time is 0%. When the inside of the chamber 20 is degassed by the vacuum pump 40 to create a negative pressure and the pressure inside the chamber detected by the vacuum gauge 47 is 0 kPa (abs), the degree of vacuum is 100%. The pressure in the chamber 20 is directly detected by the vacuum gauge 47, but in the following description, the pressure detected by the vacuum gauge 47 will be replaced with the degree of vacuum P in the chamber 20.

A cylinder pipe 48 branches from between the vacuum pump 40 and the vacuum valve 42 in the suction pipe 41, and the cylinder pipe 48 is connected to the upper space 36a of the elevating cylinder 36. A three-way valve 49 is interposed in the cylinder pipe 48, two ports of the three-way valve 49 are connected to the vacuum pump 40 side and the elevating cylinder 36 side of the cylinder pipe 48, and the remaining one port of the three-way valve 49 is outside air. It is open to the side. When the vacuum pump 40 is operated while the vacuum pump 40 side and the elevating cylinder 36 side of the three-way valve 49 are communicated with each other, the upper space 36a of the elevating cylinder 36 becomes negative pressure, and the support shaft 35 resists the urging force of the spring member 38. And rise. When the elevating cylinder 36 side and the outside air side of the three-way valve 49 are in a communicating state, the upper space 36a of the elevating cylinder 36 is not negatively pressured, and the support shaft 35 is lowered by the urging force of the spring member 38.

As shown in FIGS. 2, 3 and 5, a bulge detection unit 50 for detecting the bulge of the contained packaging bag is provided in the chamber 20. The bulge detection unit 50 detects the positions of the detection plate 51 rotatably supported around the horizontal axis on the front surface of the lower surface of the chamber cover 22, the magnet 52 fixed to the rear end of the detection plate 51, and the detection plate 51. It is provided with a bulge detector 53 including a proximity switch such as a reed switch.

The detection plate 51 has a strip shape extending in the left-right direction like the lower and upper blocks 31 and 32. The detection plate 51 is arranged immediately behind the upper block 32 on the lower surface of the chamber cover 22, and is rotatably supported around the horizontal axis so that the rear side moves up and down. A magnet 52 is fixed to the rear end of the left end of the detection plate 51, and the magnet 52 moves up and down by the rotation of the detection plate 51. When the packaging bag housed in the chamber 20 is not inflated, the detection plate 51 is tilted diagonally downward, and the magnet 52 at the rear end of the detection plate 51 is positioned (lower position) in the lower part of the chamber 20 (FIG. 3 and the solid line in FIG. 5). When the packaging bag housed in the chamber 20 is inflated, the detection plate 51 is lifted and rotated by the inflated packaging bag, and the magnet 52 at the rear end of the detection plate 51 is located at the upper part (upper position) in the chamber 20. (Indicated by the alternate long and short dash line in FIGS. 3 and 5).

The swelling detector 53 detects the swelling of the packaging bag by detecting the position of the magnet 52 at the rear end of the detection plate 51 that rotates upward when the packaging bag swells. The bulge detector 53 is arranged at a position facing the magnet 52 of the detection plate 51 which is in the upper position on the outside of the chamber base 21. When the packaging bag is not inflated and the magnet 52 of the detection plate 51 is in the lower position, the swelling detector 53 outputs an off signal because the magnet 52 in the lower position is separated. When the packaging bag is inflated and the magnet 52 of the detection plate 51 is in the upper position, the swelling detector 53 outputs an on signal when the magnet 52 in the upper position is in close proximity.

As shown in FIGS. 3 and 6, an electrical box 60 for accommodating electrical components such as a control board 76 and an electrical component 77 is provided in the front portion of the casing 11. The electrical box 60 is formed in a box shape that opens toward the front, and is arranged so as to cover the control board 76 (described later) on the rear surface of the operation panel 70 at the front portion in the casing 11. A large number of ventilation holes are formed in the electrical box 60, and these ventilation holes allow the inside of the electrical box 60 and the inside of the casing 11 to be ventilated. The electrical components such as the control board 76 and the electrical components 77 that generate heat in the electrical box 60 are cooled by the cooling air that passes from the casing 11 into the electrical box 60.

As shown in FIGS. 1, 2, 3 and 6, an operation panel 70 is provided on the front wall 14a of the front side portion 14 constituting the peripheral wall 13 of the casing 11. The operation panel 70 has a substantially rectangular shape when viewed from the front, and is attached at a position that covers the opening 14b of the front wall 14a and the casing-side facing portion 14c.

The operation panel 70 is recessed in the central portion of the operation panel 70 so as to open toward the front side, and a recess 72 provided with the operation portion 71 and an upper wall portion 73 formed on the upper side of the recess 72 are formed. It is provided.

As shown in FIGS. 1 and 2, the operation unit 71 is provided with a plurality of operation buttons 71a that are pushed and operated by the operator, and a display unit 71b that displays the operation status of these operation buttons 71a. There is. By pressing the operation button 71a, operations such as selection and setting of the packaging program of the vacuum packaging machine 10 are executed.

As shown in FIG. 6, the recess 72 is provided so as to cover the opening 14b. The recess 72 is provided with an operation unit mounting wall 72a to which the operation unit 71 is attached, and a connection wall 72b for connecting the operation unit mounting wall 72a and the upper wall portion 73. The operation unit mounting wall 72a is provided so as to be inclined so as to face diagonally upward in order to improve the operability of the operator. A control board 76 is attached to the recess 72, that is, the rear surface of the operation panel 70. Specifically, the control board 76 is attached to the rear surface of the operation unit mounting wall 72a and is housed in the electrical box 60.

As shown in FIGS. 6 and 7, a waterproof wall portion 74 is provided on the concave portion 72, that is, the rear surface of the operation panel 70 so as to cover the upper surface and the upper side surface of the electrical box 60. Specifically, the waterproof wall portion 74 is provided on the rear surface of the operation portion mounting wall 72a. Further, the waterproof wall portion 74 is composed of an upper wall 75a of a rising portion 75 rising from the rear surface of the operation portion mounting wall 72a toward the rear side and an upper portion of the left and right wall portions 75b and 75c. As described above, the waterproof wall portion 74 is formed in a U-shape that opens downward.

The waterproof wall portion 74 provided on the rear surface of the operation portion mounting wall 72a is located below the operation panel side facing portion 73a provided on the upper side of the recess 72. That is, the waterproof wall portion 74 is the rear surface of the operation panel 70 and protrudes from a portion below the operation panel side facing portion 73a. Therefore, the waterproof wall portion 74 regulates the water flowing into the casing 11 from between the upper end edge of the front wall 14a and the casing 11 to flow to the control board 76 in the lower electrical box 60. The waterproof wall portion 74 may be provided so as to cover the entire upper surface and side surfaces of the electrical box 60.

The rising portion 75 is formed in a square shape so as to surround the control board 76, and is composed of an upper wall portion 75a, left and right wall portions 75b, 75c, and a lower wall portion 75d. The upper wall 75a, the left and right wall portions 75b, 75c, and the lower wall portion 75d rise vertically from the rear surface (flat surface) of the operation portion mounting wall 72a. The upper wall 75a, the left and right wall portions 75b, 75c, and the lower wall portion 75d cover at least the front surface, the left and right side surfaces, and the lower surface of the electrical box 60, respectively.

As shown in FIGS. 6 and 7, an operation panel side facing portion 73a and an operation panel side ridge portion 73b are provided on the rear surface of the upper wall portion 73, that is, the rear surface of the operation panel 70. The operation panel side facing portion 73a is provided above the opening 14b on the rear surface of the upper wall portion 73 and facing the casing side facing portion 14c.

The operation panel side ridge portion 73b has a positioning structure for positioning the seal member 80, which will be described later. This positioning structure particularly positions the seal member 80 in the vertical direction. The operation panel side ridge portion 73b extends along the extension direction (horizontal direction) of the seal member 80, and protrudes from the operation panel side facing portion 73a toward the casing side facing portion 14c. The operation panel side ridges 73b are composed of a pair of ridges 73b1 and 73b2 provided so as to face each other with the seal member 80 sandwiched in the vertical direction. The upper ridge portion 73b1 (lower surface of the upper ridge portion 73b1) is provided so as to abut on the upper surface of the seal member 80, and the length of the upper ridge portion 73b1 in the longitudinal direction (horizontal direction) is the length of the seal member 80. It is set to be longer than the length in the longitudinal direction. The lower ridge portion 73b2 (upper surface of the lower ridge portion 73b2) is provided so as to abut on the lower surface of the seal member 80, and the length of the lower ridge portion 73b2 in the longitudinal direction is the length of the seal member 80. It is set to be longer than the length in the direction. According to such a pair of ridge portions 73b1 and 73b2, the seal member 80 can be reliably positioned in the vertical direction.

Further, as shown in FIG. 7, before the operation panel 70 to which the seal member 80 is attached is attached to the front wall 14a of the casing 11, the length (height) of the pair of ridge portions 73b1 and 73b2 in the protruding direction is , The value is set to be smaller than the thickness (height) of the seal member 80. That is, the seal member 80 has a portion protruding from the pair of ridge portions 73b1 and 73b2 as a protruding portion. The length (height) of the protrusion is the tip of the pair of ridges 73b1 and 73b2 and the front wall of the casing 11 when the operation panel 70 to which the seal member 80 is attached is attached to the front wall 14a of the casing 11. The value is set to be larger than the distance (gap) from 14a. That is, the difference between the length of the protruding portion and the distance between the tips of the pair of ridge portions 73b1 and 73b2 and the front wall 14a of the casing 11 is the crushing allowance. This crushing allowance can be adjusted (set) to an appropriate value based on the softness, elastic modulus, etc. of the material of the sealing member 80, and a desired sealing effect can be obtained.

When the operation panel 70 to which the seal member 80 is attached is attached to the front wall 14a of the casing 11, the seal member is pressed by the operation panel 70 and the front wall 14a of the casing 11 at a predetermined pressure, so that the seal member 80 protrudes. The part is crushed (elastically deformed) by an appropriate value of the crushing allowance. As a result, the pressing seal member 80 ensures that the operation panel 70 and the front wall 14a of the casing 11 are in close contact with each other, and a desired sealing effect can be exhibited. In the state where the operation panel 70 is attached to the front wall 14a of the casing 11, the gap between the tips of the pair of ridges 73b1 and 73b2 and the front wall 14a of the casing 11 may be zero (0). The seal member 80 needs to be pressed against the front wall 14a of the casing 11 with a predetermined pressure to be in close contact with the casing 11.

In the present embodiment, the operation panel side ridge portion 73b is composed of a pair of ridge portions 73b1, 73b2, that is, an upper ridge portion 73b1 and a lower ridge portion 73b2. It may be composed of only one of the strips 73b2. This also makes it possible to reliably position the seal member 80 in the vertical direction.

Further, in the vacuum packaging machine 10 configured as described above, the positioning structure for positioning the seal member 80 is provided on the operation panel side facing portion 73a, but may be provided on the casing side facing portion 14c. At this time, the positioning structure is composed of a casing-side ridge portion that extends along the extension direction of the seal member 80 and projects from the casing-side facing portion 14c toward the operation panel-side facing portion 73a. The casing-side ridges are preferably a pair of ridges that are provided so as to face each other with the seal member 80 sandwiched in the vertical direction, and may be any one of the ridges.

Further, in the vacuum packaging machine 10 configured as described above, the positioning structure is provided only on the operation panel side facing portion 73a, but is provided on both the operation panel side facing portion 73a and the casing side facing portion 14c. May be good. At this time, the positioning structure is composed of the operation panel side ridge portion 73b and the casing side ridge portion 73b.

As shown in FIGS. 3 and 6, the seal member 80 is interposed between the casing-side facing portion 14c and the operation panel-side facing portion 73a, that is, between the casing 11 and the operation panel 70. As shown in FIG. 7, the seal member 80 is formed in an elongated tape shape and extends along the width direction of the operation panel 70. The length of the seal member 80 in the longitudinal direction is set to be longer than the length of the opening 14b in the width direction. The sealing member 80 is made of a liquid-tight and elastically deformable material (for example, polyolefin, acrylic foam, polyvinyl chloride foam, rubber, etc.). The front surface of the seal member 80 is adhered to the rear surface of the operation panel side facing portion 73a by an adhesive member such as double-sided tape or an adhesive. The rear surface of the seal member 80 is in contact with the casing 11. The seal member 80 closely adheres the casing-side facing portion 14c and the operation panel-side facing portion 73a to regulate the inflow of liquid from above the casing-side facing portion 14c and the operation panel-side facing portion 73a into the opening 14b.

In the vacuum packaging machine 10 configured as described above, the packaging program is selected or set by pressing various operation buttons on the operation panel 70, and the packaging bag is placed above the lower block 31 in the chamber 20. When the peripheral edge of the opening is placed and the chamber cover 22 is rotated to close the upper opening of the chamber base 21, the inside of the chamber 20 is depressurized by the vacuum pump 40. When the inside of the chamber 20 is depressurized to a predetermined degree of vacuum, the vacuum valve 42 is closed, the support shaft 35 is raised by the elevating cylinder 36, and the lower block 31 is raised to a position where it is pressed against the upper block 32. The peripheral edge of the opening of the packaging bag placed on the upper side of the lower block 31 is held in a closed state by being sandwiched by the lower and upper blocks 31 and 32, and the peripheral edge of the opening of the packaging bag is heated by the heater 33. It is heat welded and sealed, and the packaging bag is sealed. By opening the first outside air introduction valve 44 and / or the second outside air introduction valve 45 after sealing the packaging bag, the inside of the chamber 20 is returned to atmospheric pressure by the outside air introduced from the suction pipe 41, and the chamber is returned to atmospheric pressure. The cover 22 is in a state in which the chamber base 21 is opened from the closed state.

The vacuum packaging machine 10 configured as described above seals a packaging bag containing foodstuffs, and is installed in an environment using water such as a kitchen or a kitchen. Water may splash on the surface of the casing 11. In such a vacuum packaging machine 10, the front wall 14a of the casing 11 is provided with an opening 14b for arranging an electrical box 60 (accommodating electrical components) attached to the rear surface of the operation panel 70 in the casing 11. The 11 and the operation panel 70 are provided with a casing-side facing portion 14c and an operation panel-side facing portion 73a facing each other on the upper side of the opening 14b, and between the casing-side facing portion 14c and the operation panel-side facing portion 73a. Is extended along the width direction of the operation panel 70, and the casing side facing portion 14c and the operation panel side facing portion 73a are brought into close contact with each other and opened from above the casing side facing portion 14c and the operation panel side facing portion 73a. A sealing member 80 that regulates the flow of liquid to the portion 14b is interposed, and the length of the sealing member 80 in the longitudinal direction is set longer than the length of the opening 14b in the width direction.

In the vacuum packaging machine 10, the sealing member 80 is in close contact with the casing side facing portion 14c facing each other on the upper side of the opening 14b provided in the front wall 14a of the casing 11 and the operating panel side facing portion 73a, and is on the casing side. The flow of liquid from the upper side of the facing portion 14c and the operating panel side facing portion 73a to the opening 14b is regulated. As a result, liquid such as water (liquid that has entered from the outside) that has entered from between the upper edge of the operation panel 70 and the front wall 14a of the casing 11 of the vacuum packaging machine 10 flows into the region directly below the sealing member 80. Can be suppressed. As a result, it is possible to prevent the liquid that has entered from the outside from reaching the opening 14b located directly below the seal member 80, and by extension, the liquid that has entered from the outside is attached to the rear surface of the operation panel 70. It is possible to prevent (not reach) the electrical components such as the control board 76 in the box 60. Further, since the length of the seal member 80 in the longitudinal direction is set longer than the length of the opening 14b in the width direction, the seal member 80 can cover the opening 14b from above over the entire length in the width direction. As a result, even if the liquid that has entered from the outside flows down from both ends of the seal member 80, it can be reliably suppressed from flowing into the opening 14b located directly below the seal member 80, and by extension, the left and right ends of the seal member 80. It is possible to more reliably prevent the liquid that has flowed down from the operation panel 70 from being applied to the electrical box 60 attached to the rear surface of the operation panel 70 through the opening 14b. As described above, in the mounting structure of the operation panel 70 described above, only the seal member 80 is interposed between the casing side facing portion 14c and the operation panel side facing portion 73a, and the front wall of the casing 11 is as in the prior art. It is possible to prevent the liquid infiltrated from the outside from being applied to the electrical components without having a structure in which the 14a is provided with elongated holes, that is, without causing a decrease in the strength of the casing 11.

A positioning structure for positioning the seal member 80 is provided on the operation panel side facing portion 73a. By doing so, the seal member 80 can be positioned at a desired position with a relatively simple configuration. In this embodiment, the positioning structure for positioning the seal member 80 is provided on the operation panel side facing portion 73a, but the present invention is not limited to this, and the positioning structure may be provided on the casing side facing portion 14c. Further, even if the positioning structure is provided on both the casing side facing portion 14c and the operation panel side facing portion 73a, the same operation and effect as described above can be obtained.

Further, this positioning structure is composed of an operation panel side ridge portion 73b that extends along the extension direction of the seal member 80 and projects from the operation panel side facing portion 73a toward the casing side facing portion 14c. ing. As a result, not only the seal member 80 can be positioned at a desired position, but also the crushing allowance of the seal member 80 can be appropriately adjusted, and a desired seal effect can be obtained. Further, by providing these ridges, the strength of the operation panel 70 can be increased. Further, when the operation panel 70 is manufactured by molding a resin material, the warpage of the operation panel 70 can be suppressed by providing these ridges. In this embodiment, the positioning structure is composed of an operation panel side ridge portion 73b protruding from the operation panel side facing portion 73a toward the casing side facing portion 14c, but the present invention is not limited to this, and the casing side facing portion is not limited to this. It may be composed of a casing-side ridge portion protruding from 14c toward the operating panel-side facing portion 73a, or an operation panel-side ridge portion 73b protruding from the operation panel-side facing portion 73a toward the casing-side facing portion 14c. It may be composed of a casing-side ridge portion that protrudes from the casing-side facing portion 14c toward the operation panel-side facing portion 73a. Even when this is done, the same effect as described above can be obtained.

Further, the operation panel side ridges 73b are a pair of ridges 73b1 and 73b2 provided so as to face each other with the seal member 80 interposed therebetween. In this case, the seal member 80 can be more reliably positioned at a desired position with a relatively simple configuration. As described above, even when the positioning structure is the casing-side ridges, if the casing-side ridges are a pair of ridges provided so as to face each other with the seal member 80 interposed therebetween, the same as described above. Similar effects can be obtained.

Further, in the vacuum packaging machine 10, a waterproof wall portion 74 that protrudes downward in a U-shape from a portion on the rear surface of the operation panel 70 and below the operation panel side facing portion 73a is provided. The waterproof wall portion 74 is provided so as to cover the upper surface and the upper side surface of the electrical box 60. By doing so, even if the liquid that has infiltrated from the outside flows down from the left and right ends of the sealing member 80, the liquid that has flowed down reaches the waterproof wall portion 74, but reaches the outer peripheral surface of the waterproof wall portion 74. Since it flows down along the waterproof wall portion 74, it is surely prevented from reaching the electrical component box 60 (particularly the electrical component such as the control board 76 in the electrical component box 60) located below the waterproof wall portion 74 and covered by the waterproof wall portion 74. can do.

In the vacuum packaging machine 10 configured as described above, as a positioning structure, the seal member 80 extends along the extending direction and protrudes from the operation panel side facing portion 73a toward the casing side facing portion 14c. The operation panel side ridges 73b, that is, a pair of ridges 73b1 and 73b2 are adopted, but instead, as shown in FIG. 8, the seal member 80 is extended along the extension direction. The groove portion 73c formed may be adopted. The groove portion 73c is recessed in the back surface of the operation panel 70, that is, the operation panel side facing portion 73a by opening toward the casing side facing portion 14c. The vertical width of the groove portion 73c is set to a value slightly larger (wider value) than the vertical width of the seal member 80. As a result, the sealing member 80 can be reliably positioned in the vertical direction.

Further, before the operation panel 70 to which the seal member 80 is attached is attached to the front wall 14a of the casing 11, the depth of the groove portion 73c is set to a value smaller than the thickness (height) of the seal member 80. That is, the seal member 80 projects from the back surface of the operation panel 70 (upper wall portion 73). The length (height) of the protruding portion is the distance between the back surface of the upper wall portion 73 and the front wall 14a of the casing 11 when the operation panel 70 to which the sealing member 80 is attached is attached to the front wall 14a of the casing 11. (Gap) is set to a larger value. That is, the difference between the length of the protruding portion and the distance between the back surface of the upper wall portion 73 and the front wall 14a of the casing 11 is the crushing allowance. This crushing allowance can be adjusted (set) to an appropriate value based on the softness, elastic modulus, etc. of the material of the sealing member 80, and a desired sealing effect can be obtained.

When the operation panel 70 to which the seal member 80 is attached is attached to the front wall 14a of the casing 11, the seal member is pressed by the operation panel 70 and the front wall 14a of the casing 11 at a predetermined pressure, so that the seal member 80 protrudes. The part is crushed (elastically deformed) by an appropriate value of the crushing allowance. As a result, the pressing seal member 80 ensures that the operation panel 70 and the front wall 14a of the casing 11 are in close contact with each other, and a desired sealing effect can be exhibited.

Further, in the above embodiment, the mounting structure of the operation panel of the present invention is adopted for the vacuum packaging machine 10 as an example of the device, but as other devices, a kitchen or a kitchen such as an ice maker, a refrigerator, or a heating cooker is used. The operation panel mounting structure of the present invention may be adopted for equipment such as kitchen equipment installed in a place where water is particularly used.

10 ... Vacuum packaging machine, 11 ... Casing, 14a ... Front wall, 14b ... Opening, 14c ... Casing side facing part, 20 ... Chamber, 21 ... Chamber base, 22 Chamber cover, 30 ... Sealing device, 31 ... Lower side Block, 32 ... Upper block, 40 ... Vacuum pump, 60 ... Electrical box, 70 ... Operation panel, 73a ... Operation panel side facing part, 73b ... Operation panel side ridge (positioning structure), 73b1, 73b2 ... Upper ridge Part, lower ridge part (pair of ridge parts), 73c ... groove part (positioning structure), 80 ... seal member.

Claims (5)

It is an operation panel mounting structure in which the operation panel is mounted on the front wall of the casing of the equipment.
The front wall of the casing is provided with an opening for arranging the electrical box attached to the rear surface of the operation panel in the casing.
The casing and the operation panel are provided with a casing-side facing portion and an operation panel-side facing portion facing each other on the upper side of the opening, respectively.
The casing-side facing portion and the operation panel-side facing portion extend along the width direction of the operation panel, and the casing-side facing portion and the operation panel-side facing portion are in close contact with each other. A seal member that regulates the inflow of liquid from the upper side of the casing side facing portion and the operation panel side facing portion into the opening is interposed.
An operation panel mounting structure, characterized in that the length of the seal member in the longitudinal direction is set longer than the length of the opening in the width direction. In the mounting structure of the operation panel according to claim 1,
An operation panel mounting structure characterized in that a positioning structure for positioning the seal member is provided on at least one of the casing-side facing portion and the operation panel-side facing portion. In the mounting structure of the operation panel according to claim 2,
The positioning structure extends along the extending direction of the seal member, and the operation panel side ridge portion that projects from the operation panel side facing portion toward the casing side facing portion.
And / or
An operation panel that extends along the extension direction of the seal member and is composed of a casing-side ridge portion that projects from the casing-side facing portion toward the operating panel-side facing portion. Mounting structure. In the mounting structure of the operation panel according to claim 3,
The operation panel side ridges are a pair of ridges provided so as to face each other with the seal member interposed therebetween.
The casing-side ridge portion is a mounting structure for an operation panel, which is a pair of ridge portions provided so as to face each other with the seal member interposed therebetween. In the operation panel mounting structure according to any one of claims 1 to 4,
A waterproof wall portion is provided on the rear surface of the operation panel, which protrudes downward in a U-shape from a portion below the operation panel side facing portion, and the waterproof wall portion is provided on the upper surface of the electrical box and the upper surface of the electrical box. An operation panel mounting structure characterized by being provided so as to cover the upper part of the side surface.

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