JP6315801B2 - Housing door structure - Google Patents

Description

  The present invention relates to a door structure of a housing, and more particularly to a structure in which an opening / closing door that closes an opening provided in a housing always stops in a state before opening the opening to the maximum. is there.

  The automatic ice making machine case 10 shown in FIGS. 16 and 17 includes a refrigeration system such as a compressor and a condenser in a lower machine chamber 14, and an ice making unit (not shown) disposed above the case 10. A large number of ice pieces made in step 1) are discharged and stored in an ice storage chamber 16 provided in the middle stage of the casing 10. An opening 10a that communicates with the ice storage chamber 16 is formed vertically in the front middle stage of the casing 10, and the opening 10a is closed by an opening / closing door 18 that can tilt obliquely downward.

  As shown in FIG. 18, the open / close door 18 is pivotally supported below the opening 10a by a hinge 34 provided at the lower edge of the open / close door 18, and the open / close door 18 is tilted downward (toward the operator). The opening 10a is opened by tilting to the right. On the left and right sides of the open / close door 18, arc-shaped arms 22 extending to the back side of the door are attached. As shown in FIG. 17, the arc-shaped arm 22 is formed on the left and right side portions inside the housing 10 through the through holes 44 opened on the left and right sides of the opening 10 a in the housing 10, and is It faces an arm storage space 46 communicating with the machine room 14. The arc-shaped arm 22 has a hook-like portion 24 formed at an end portion extending toward the arm storage space 46, and a hook member 42 attached to the hook-like portion 24 and a bracket 66 provided in the machine chamber 14. In between, the tension spring 40 is elastically interposed. The opening and closing door 18 is urged by the tension spring 40 in a direction to close the opening 10a, and is restricted from being opened at a stroke with a slight force.

  Then, as shown in FIGS. 17 and 18 (b), when the user pulls the opening / closing door 18 against the elasticity of the tension spring 40, the opening / closing door 18 tilts obliquely downward and opens the opening 10a. Is released. When the opening / closing door 18 tilts to a predetermined angle with respect to the opening 10a, the weight of the opening / closing door 18 surpasses the tensile elasticity of the tension spring 40 and opens the opening 10a at the maximum angle. At this time, the arc-shaped arm 22 also moves with the tilting of the opening / closing door 18, and when the opening / closing door 18 opens to the required maximum angle, the tip of the hook-shaped portion 24 comes into contact with the inner surface of the housing 10. The dimensions for position regulation are set. That is, as shown in FIG. 18B, when the open / close door 18 opens at an angle of about 60 degrees (maximum angle) with respect to the opening 10a, the hook-like portion 24 hits the inner surface of the housing 10. Thus, further opening of the door 18 is restricted. Thus, the door structure which makes the arc-shaped arm 22 function as a stopper is disclosed by patent document 1, for example.

Japanese Patent Laid-Open No. 2000-241054

  As shown in FIG. 16, a cover member 48 surrounding the arm storage space 46 is attached to the housing 10. An insertion port (not shown) communicating with the through hole 44 is formed in the front wall 56 of the cover member 48, and when the open / close door 18 is opened at the maximum angle, the hook-like portion 24 of the arc-shaped arm 22 is formed. The cover member 48 comes into contact with the inner surface. For this reason, when the opening / closing door 18 is opened, a large impact is applied to the arc-shaped arm 22 and the cover member 48, and these members are made of a rigid metal such as stainless steel that can withstand the impact. That is, each time the opening / closing door 18 is opened to the maximum angle, the bowl-shaped portion 24 comes into contact with the cover member 48 and a large impact is generated due to a collision between metals.

  The present invention has been proposed in view of the above-described problems related to the prior art and preferably solves these problems. When the open / close door is opened, the tip of the arm comes into contact with the inside of the housing to control the position. The purpose is to reduce the frequency of impacts that occur during the process.

In order to overcome the above-mentioned problems and achieve the intended purpose, the door structure of the housing of the invention according to claim 1 of the present application is pivotally supported horizontally below the opening portion opened vertically to the housing. An opening / closing door that opens the opening by tilting downward, and is attached to a side portion of the opening / closing door, and faces the internal space of the housing through a through-hole opened on the side of the opening, In the door structure of the housing provided with an arm that stops the opening and closing door at a first position where the opening is opened at a maximum angle by the hook-shaped portion formed on the side hitting the contact portion inside the housing,
It is interposed between the lower bottom surface of the opening / closing door and the lower peripheral edge of the opening, and the opening / closing door is always held at a second position smaller than the maximum angle of the first position when the opening / closing door is opened. And a compressible portion that is compressed when an excessive load is applied to the door and allows the door to move beyond the second position,
The hook-shaped portion of the arm is positioned with a gap with respect to the abutting portion inside the housing in a state where the open / close door is stopped at the second position,
When an excessive load is applied to further open the opening / closing door beyond the second position, the compressible portion is compressed to move the opening / closing door further in the opening direction, and the hooked portion of the arm is moved to the housing. The gist is that the door is configured to stop at the first position by hitting a contact portion inside the body.

  According to the first aspect of the present invention, when the opening / closing door is opened with respect to the opening, the opening / closing door is provided by the compressible portion interposed between the lower bottom surface of the opening / closing door and the lower peripheral edge of the opening. Is normally held in the second position. At this time, since the hook-shaped portion of the arm is set to have a dimension that keeps a predetermined gap with respect to the contact portion inside the housing, the hook-shaped portion is moved to the housing when the door is opened to the second position. There is no hit. For this reason, when the door is opened, the number of occurrences of impact noise and rattling that occurs every time the hook-shaped portion abuts the housing and restricts the position can be suppressed.

The gist of the invention according to claim 2 is that the compressible portion is provided on a lower bottom surface of the door.
According to the invention which concerns on Claim 2, the opening / closing door can be hold | maintained in a normal 2nd position at the time of opening of this opening / closing door by the compressible part provided in the lower bottom face of the opening / closing door. In addition, there is an advantage that the compressible portion is hardly visible from the outside.

The gist of the invention according to claim 3 is that the compressible portion is provided at a lower peripheral portion of the opening.
According to the invention which concerns on Claim 3, the opening / closing door can be hold | maintained in a normal 2nd position at the time of opening of this opening / closing door by the compressible part provided in the peripheral lower part of the opening part.

  According to the door structure of the housing according to the present invention, it is possible to reduce the frequency of impacts that occur when the position of the arm is abutted against the inside of the housing when the opening / closing door is opened.

It is a perspective view which removes the left outer panel and shows the door structure of the housing concerning the 1st example, and is in the state where the door was opened. It is a perspective view of the door used for the housing | casing of FIG. 1, Comprising: The arc-shaped arm is extended behind the back panel. It is the principal part enlarged view of the left side surface which removes the left outer panel and shows the housing | casing which closed the door. (a) is an enlarged view of the main part of the left side surface of the casing with the open / close door open, with its left outer panel removed, (b) is an enlarged view of circle A, (c) These are enlarged views of circle B. FIG. (a) is a left side view showing the casing with the open / close door in the maximum open position, with the left outer panel removed, (a) is an enlarged view of circle C, and (b) is a circle D FIG. The open / close door in the open position is indicated by a two-dot chain line. It is a perspective view of the arc-shaped arm which functions as a stopper of an opening / closing door. It is a perspective view showing the skeleton of the housing | casing shown in FIG. It is a disassembled perspective view which shows the state which attaches a cover member to the chassis shown in FIG. It is a disassembled perspective view which shows the state which attaches a bracket to the chassis shown in FIG. (a) is a perspective view of the bracket shown in FIG. 9, and (b) is a front view. The door structure of the housing | casing which concerns on 2nd Example is a principal part enlarged view of the left side surface which removes and shows a left outer panel, Comprising: The cushioning material is provided in the lower periphery of the opening part. It is a perspective view of the bracket which concerns on the example 1 of a change. It is a perspective view of the bracket which concerns on the example 2 of a change. (a) is a perspective view of the bracket which concerns on the modification 3, (b) is a front view of (a). (a) is a perspective view of the bracket which concerns on the modification 4, (b) is a front view of (a). In the door structure of the housing | casing which concerns on a prior art, it is a perspective view which removes and shows a right outer panel, Comprising: The opening part of a housing | casing is closed by the door. It is a perspective view which removes and shows the right outer panel of the housing | casing which concerns on a prior art, Comprising: The opening part of a housing | casing is open | released by inclining an opening-and-closing door. (a) is the principal part enlarged view of the right side surface of FIG. 16, (b) is the principal part enlarged view of the right side surface of FIG.

  Next, the door structure of the housing according to the present invention will be described below with reference to the accompanying drawings by giving a preferred embodiment. In addition, the housing | casing in this invention is a casing of an automatic ice maker in the Example. 1 to 10 show the door structure of the first embodiment, FIG. 11 shows a second embodiment in which the mounting position of the cushion material (compressible portion) is changed, and FIGS. An example of change is shown. In the following description, the members described in the related art section are denoted by the same reference numerals.

(First embodiment)
As shown in FIGS. 1 and 7, the housing 10 of the automatic ice maker according to the first embodiment is a box-like body in which an outer panel is assembled to a skeleton composed of a metal frame and a synthetic resin chassis 12. . The housing 10 is provided with a refrigeration system such as a compressor and a condenser in a lower machine chamber 14, and a large number of ice produced by an ice making unit (not shown) disposed in the upper interior of the housing 10, The ice storage chamber 16 provided in the middle stage of the casing 10 is discharged and stored. In addition, an opening 10a that communicates with the ice storage chamber 16 is formed vertically on the front surface of the housing 10, and an opening / closing door 18 is provided in the opening 10a so as to be tiltable downward. As will be described later, the opening / closing door 18 has a cushion material (compressible portion) interposed between the lower bottom surface 18a of the opening / closing door 18 and the lower peripheral edge of the opening 10a from the closed position of the opening 10a shown in FIG. ) 20 is firstly functioned as a stopper and is opened to the normal open position (second position) shown in FIG. 4, and an overload exceeding the normal load is applied to the open / close door 18 in the normal open position. Then, the cushion material 20 is compressed, and is configured to be opened from the normal opening position to the maximum opening position (first position) shown in FIG. In this maximum open position, the hook-shaped portion 24 of the arc-shaped arm 22 functions secondary as a stopper. In this way, the open / close door 18 is stopped at the maximum opening position that opens the opening 10a at the maximum angle, and is held at the normal opening position with an opening angle smaller than the maximum opening position. The opening / closing door 18 in the normally open position is set to have an angle of about 60 degrees with respect to the opening 10a, for example.

  As shown in FIG. 2, the open / close door 18 is configured by attaching a metal front panel 30 to the front side of a synthetic resin back panel 28, and a foaming agent is filled between the panels 28, 30. Thus, the open / close door 18 is imparted with excellent heat insulation and required strength by being foamed and solidified. Further, as shown in FIG. 1, a packing 32 that seals the opening 10 a when the door 18 is closed is provided along the inner periphery of the back side (ice storage chamber 16 side) of the back panel 28. As shown in FIGS. 3 to 5, the open / close door 18 is horizontally supported by a hinge 34 below the opening 10 a. The open / close door 18 is tilted obliquely downward with the hinge 34 as a fulcrum to open the opening 10a when the operator grasps the grip portion 36 formed on the upper portion and pulls it toward the front side.

  As shown in FIGS. 1 and 2, arc arms 22 that extend to the back side of the door 18 are attached to the left and right sides of the door 18. As shown in FIG. 6, the arc-shaped arm 22 includes a base portion 26 fixed to the open / close door 18, and a hook-shaped portion 24 formed at the end of the main body extending in an arc shape from the base portion 26. Yes. Two countersunk holes 26a are formed in the base 26 of the arc-shaped arm 22, the base 26 is directed to the left and right sides of the front panel 30 (FIG. 2), and countersunk screws 38 are screwed into the countersink 26a. Is attached to the door 18. The hook-like portion 24 is formed in a hook-like shape with the end of the arm body protruding upward, and a hook for connecting a tension spring (elastic body) 40 to a hook hole 22a provided in the hook-like portion 24. The member 42 is hooked (FIG. 1). The opening / closing door 18 is urged in the closing direction of the opening 10a by the elasticity of the tension spring 40. When the opening / closing door 18 is tilted to a predetermined angle, the weight of the opening / closing door 18 exceeds the urging force of the tension spring 40, and the opening / closing door 18 tilts in the opening direction to open the opening 10a.

  As shown in FIG. 1 and FIG. 7, at the left and right edges of the opening 10 a in the housing 10, vertically long through holes 44 are opened corresponding to the arc-shaped arms 22 extending to the back side of the opening / closing door 18. ing. The through hole 44 communicates with an arm storage space 46 (internal space) defined on the left and right side portions inside the housing 10. As shown in FIGS. 7 and 8, the arm storage space 46 is surrounded by a cover member 48 made of a metal such as stainless steel provided in the housing 10. That is, a rectangular internal space is defined by the cover member 48 and the outer panel of the housing 10. The bottom wall 50 of the cover member 48 is formed with a bottom hole 52 penetrating in the vertical direction, and the bottom wall 50 has two holes penetrating in the vertical direction at a position sandwiching the bottom hole 52 in the front-rear direction. The fitting hole 54 is opened. Further, an insertion port 58 is formed in the front wall 56 of the cover member 48 at a position corresponding to the through hole 44.

  As shown in FIG. 1, the main body portion of the arc-shaped arm 22 is introduced into the arm storage space 46 through a through hole 44 provided in the housing 10. As shown in FIGS. 3 to 5, the arc-shaped arm 22 facing the arm storage space 46 moves in the arm storage space 46 as the opening / closing door 18 opens and closes. Then, as shown by the solid line in FIG. 5, when the open / close door 18 reaches the maximum open position, the tip of the hook-like portion 24 of the arc-shaped arm 22 hits the inner surface of the housing 10 (the contact portion inside the housing). The position is set as follows. That is, the bowl-shaped portion 24 of the arc-shaped arm 22 functions as a stopper that stops the open / close door 18 at the maximum open position. At this time, the bowl-shaped portion 24 comes into contact with the opening edge of the insertion port 58 of the cover member 48 that becomes the inner surface of the housing 10. As shown in FIG. 4, in the state where the open / close door 18 is in the normal open position, the presence of a cushion material 20 to be described later exists between the flange portion 24 of the arc-shaped arm 22 and the inner surface of the housing 10. As a result, a slight gap is maintained. At this time, the flange-shaped portion 24 of the arc-shaped arm 22 does not contact the inner surface of the housing 10, and therefore the arc-shaped arm 22 does not act as a stopper.

  As shown in FIGS. 2 to 5, the lower bottom surface 18 a of the opening / closing door 18 is an inclined surface that is inclined downward from the back side to the front side of the opening / closing door 18. As shown in FIG. 3, the lower bottom surface 18a of the opening / closing door 18 has the cushioning material 20 made of a sheet-like material that has low resilience and is not greatly compressed by a load applied when the opening / closing door 18 is opened. Is provided. The cushion material 20 is attached to the lower bottom surface 18a of the open / close door 18 with a double-sided tape at a position where it does not interfere with the hinge 34. That is, even if the cushion material 20 contacts the cushion material 20 when the opening / closing door 18 is opened, the cushion material 20 is hardly compressed and deformed depending on the load of the degree, and the opening / closing door 18 is further overloaded. A material that is compressed when applied is selected. For example, an open-cell foam sheet made of silicon or polypropylene as a raw material and a polyurethane resin as a composition is preferably used. As shown in FIG. 4, the cushion material 20 provided on the lower bottom surface 18a of the open / close door 18 is formed on the lower peripheral edge of the opening 10a when the open / close door 18 is opened to the normal open position (second position). It contacts and is interposed between the lower bottom surface 18a of the door 18 and the lower peripheral edge of the opening 10a. In a state where no further load is applied to the opening / closing door 18 in the second open position, the cushioning material 20 sandwiched between the lower bottom surface 18a of the opening / closing door 18 and the lower peripheral edge of the opening 10a is: The door 18 is held in the normal second open position with almost no compression deformation.

  Thus, in the first embodiment, the cushion material 20 that contacts the lower peripheral edge of the opening 10a functions as a stopper that holds the open / close door 18 in the second open position. Further, as shown in FIG. 5, when a further overload is applied to the door 18 in the second open position, the cushion material 20 includes a lower bottom surface 18 a of the door 18 and a lower peripheral edge of the opening 10 a. It is sandwiched between and compressed. The opening / closing door 18 further moves in the opening direction by the compression of the cushion material 20. When the compression of the cushion material 20 proceeds and the door 18 moves to the maximum open position (first position), the hook-like portion 24 of the arc-shaped arm 22 comes into contact with the inner surface of the housing 10, and the door 18 is opened. Is stopped at the maximum first open position. That is, when the opening / closing door 18 is in the second open position, the gap existing between the bowl-shaped portion 24 and the cover member 48 causes the cushion material 20 to be further compressed by an excessive load applied to the opening / closing door 18. Thus, the flange-like portion 24 and the cover member 48 are set to contact each other.

  As shown in FIG. 1, a spring storage space 64 is formed below the arm storage space 46 on the left and right side portions inside the housing 10 so as to communicate vertically with the arm storage space 46 through a connection port 62. ing. The spring accommodating space 64 is provided with a tension spring 40 attached to a bracket 66 provided in the space 64 and connected to the arc-shaped arm 22 via the hook member 42. In other words, the tension spring 40 is elastically interposed between the bracket 66 and the flange portion 24 of the arc-shaped arm 22. As shown in FIGS. 7 and 8, the spring storage space 64 is formed of two vertical ribs 74 that are formed in the chassis 12 so as to be separated from each other in the front-rear direction by leg portions 12 a extending in the front-rear direction to the side of the machine chamber 14. It is formed between them and has a substantially U-shape that opens upward through the connection port 62. An upper plate 78 (FIG. 8) having a notch 76 between the vertical ribs 74 is provided on the upper portions of the vertical ribs 74. The upper plate 78 is formed on the bottom wall 50 of the cover member 48. A boss 80 that fits into the fitting hole 54 projects from the fitting hole 54. As described above, the upper surface of the upper plate 78 is an installation portion on which the cover member 48 is installed. A lateral rib 82 that reinforces the notch 76 is provided around the notch 76.

  As shown in FIGS. 7 and 8, the cover member 48 is positioned with respect to the chassis 12 by fitting the boss 80 of the installation portion into the fitting hole, and is fixed using fastening means such as bolts and nuts. The At this time, since the bottom wall 50 of the cover member 48 is installed with an installation portion that is separated forward and backward by the notch 76, the strength around the notch 76 in the chassis 12 is reinforced. Further, the notch 76 of the installation portion corresponds to the bottom hole 52 of the cover member 48, and the connection port 62 that vertically communicates the arm storage space 46 and the spring storage space 64 by the notch 76 and the bottom hole 52. Is formed. As shown in FIG. 1, as the door 18 is opened and closed, the hook member 42 that connects the arcuate arm 22 and the tension spring 40 moves up and down via the connection port 62.

  As shown in FIG. 8, a bracket 66 for attaching the tension spring 40 to the storage space is provided at the bottom of the spring storage space 64. As shown in FIGS. 9 and 10, the bracket 66 includes a fixing portion 68 fixed to the chassis 12 and an engaging portion 70 to which the tension spring 40 is attached. The fixing portion 68 is formed in a U-shape that opens in the front-rear direction and the outer side (outer panel side), and the upper and lower surfaces of the leg portion 12 a that extends in the front-rear direction of the chassis 12 that forms the bottom of the spring storage space 64. Further, it abuts against the inner surface (the surface on the machine room 14 side) and is fixed to the leg portion 12a with screws or the like. The leg 12a of the chassis 12 is formed with an insertion groove 12b (FIG. 9) whose bottom surface is recessed upward corresponding to the mounting position of the bracket 66. And the lower end part of the fixing | fixed part 68 becomes the insertion piece 68a inserted in the insertion groove 12b formed in the leg part 12a, and the upper surface of this insertion piece 68a contacts the top | upper surface of the insertion groove 12b. It has become. As described above, since the bracket 66 has a large contact area with the chassis 12, stress applied to the bracket 66 as the opening / closing door 18 is opened and closed can be received by the entire fixing portion 68. For this reason, the bracket 66 is damaged even if a stress is applied that causes the force direction to change in a short time by opening and closing the door 18 quickly, or even if a large force is applied by opening and closing the door 18 strongly. hard. Further, since the bracket 66 is fixed in close contact with the chassis 12, the stress accompanying opening and closing of the door 18 is not easily transmitted to the screw for fixing the bracket 66, so that the screw can be fixed at one place.

  A substantially T-shaped engaging portion 70 is formed to project upward at the upper extending end portion of the fixing portion 68. The engaging portion 70 is positioned by a U-shaped fixing portion 68 so as to be accommodated in the spring accommodating space 64. The engaging portion 70 is formed with two engaging grooves 70a that are opened downward in which the hooks of the tension springs 40 are hooked, spaced apart in the front-rear direction. The two engaging grooves 70a are set so that the extension of the tension spring 40 to be hooked is different. Since the urging force of the tension spring 40 is proportional to the length of the spring, the bracket 66 can adjust the opening / closing force of the door 18 by changing the engagement groove 70a for hooking the hook of the tension spring 40. ing.

(Operation of the first embodiment)
Next, the operation of the door structure of the housing 10 according to the first embodiment will be described. When the operator grasps the grip portion 36 of the open / close door 18 in the closed position and pulls it forward, the open / close door 18 tilts in the opening direction against the biasing force of the tension spring 40 with the hinge 34 as a fulcrum. As shown in FIG. 4, when the opening / closing door 18 is opened to an angle of about 60 degrees with respect to the opening 10 a, the cushion material 20 provided on the lower bottom surface 18 a of the opening / closing door 18 is the lower peripheral edge of the opening 10 a in the housing 10. , The further opening of the open / close door 18 is restricted, and the open / close door 18 is normally held in the open position. At this time, the hook-like portion 24 of the arc-shaped arm 22 is set so as to be separated from the inner surface of the housing 10, and therefore, when the open / close door 18 is in the normal open position, the hook-like portion 24 and the housing 10. A slight gap is maintained between the two. Thus, in the normal opening operation in which the open / close door 18 opens to the normal open position by its own weight, the hook-like portion 24 does not hit the cover member 48, so that the arc-shaped arm 22 comes into contact with the cover member 48. No big impact sound or rattling occurs.

  As shown in FIG. 5, in the door structure of the housing 10, an overload exceeding the normal load such as the weight of the operator and the weight of the container for putting ice is applied to the open / close door 18 in the normally open position. Then, the cushion material 20 is compressed by the load, and the open / close door 18 moves in the opening direction beyond the normal opening position. As the opening / closing door 18 moves, the bowl-shaped portion 24 opens from the state separated from the cover member 48 indicated by a two-dot chain line in FIG. 5 to the opening of the insertion port 58 of the cover member 48 indicated by a solid line in FIG. It will be in the state which contacts the edge. When the hook-like portion 24 abuts on the cover member 48, further opening of the open / close door 18 is restricted, and the open / close door 18 is stopped at the maximum open position. As described above, in the normal opening operation, the opening / closing door 18 is held in the normal opening position, and is stopped at the maximum opening position when further force is applied. Therefore, when the opening / closing door 18 is opened, the hook-like portion 24 is opened. It is possible to reduce the number of impacts generated by contacting the cover member 48. Further, since the load applied to the open / close door 18 at the maximum open position is received by the metal arcuate arm 22 and the metal cover member 48, damage to the open / close door 18 can be prevented. Further, since it is not necessary to increase the strength of the door 18 in order to prevent damage due to a load applied to the door 18 that is normally in the open position, an increase in manufacturing cost can be suppressed. Furthermore, since the opening / closing door 18 is configured to open from the normal open position to the maximum open position by compressing the cushion material 20, the momentum of the open / close door 18 reaching the maximum open position by the compression of the cushion material 20 is reduced. For this reason, the impact at the time of the collar-shaped part 24 contact | abutting with respect to a cover member can be suppressed. Moreover, in the door structure of the housing | casing 10, since the cushion material 20 is attached to the lower bottom face 18a which inclines below toward the front side from the back side of the opening-and-closing door 18, the cushion material 20 is hard to be visually recognized from the outside. Furthermore, the normal opening position of the door 18 can be changed by changing the inclination angle of the lower bottom surface 18a of the door 18 or changing the thickness of the cushion material 20 or the ease of being compressed.

(Second embodiment)
In the second embodiment, only the mounting position of the cushion material 20 is changed, and the other configuration is the same as that of the first embodiment. That is, as shown in FIG. 11, in the door structure of the housing 10 according to the second embodiment, the cushion material 20 is provided at the lower peripheral edge of the opening 10a, so that the lower bottom surface 18a of the open / close door 18 and the peripheral edge of the opening 10a. A cushion material 20 is interposed between the lower portion and the lower portion.

(Operation of the second embodiment)
In the door structure of the housing 10 according to the second embodiment, the opening / closing door 18 can be held in the normal opening position when the opening / closing door 18 is opened by the cushion material 20 provided with the opening / closing door 18 at the lower peripheral edge of the opening 10a.

(Example of change)
The door structure of the housing according to the present invention is not limited to the configuration described above, and can be changed as follows, for example.
(1) In the embodiments, the door structure of the casing of the automatic ice making machine has been described. However, the present invention is not limited thereto, and the door structure according to the present invention may be employed in a casing such as a dishwasher or a storage.
(2) In the embodiment, the configuration in which the collar portion of the arm is brought into contact with the metal cover member is employed, but a dedicated member for bringing the collar portion into contact with the inside of the housing may be provided. Moreover, although the arc-shaped arm is employed in the embodiment, a linear arm may be used.
(3) In the embodiment, the opening / closing door is urged in the closing direction by the tension spring, but a configuration in which no elastic body is interposed in the opening / closing door may be employed.
(4) In the embodiment, the low-rebound cushioning material is used as the compressible portion, but an elastic body such as flexible synthetic resin or rubber may be used. Moreover, you may provide a compressible part by comprising a part of opening / closing door or a housing | casing with a compressible member.
(5) In the embodiment, the bracket having the U-shaped fixing portion has been described as an example. However, the brackets 86, 88, and 90 having the L-shaped fixing portion 68 as shown in FIGS. 92.
(6) In the embodiment, the bracket 66 having two engagement grooves 70a is described as an example. However, as shown in FIGS. 13 to 15, the bracket 88 having three or more engagement grooves 70a. , 90, 92.
(7) As shown in FIG. 14, a plurality of engaging grooves 70a are provided continuously via thresholds 72a and 72b, and the threshold 72b between the engaging grooves 70a is set shorter than the outermost threshold 72a. The bracket 90 may be used. In this case, the hook of the tension spring 40 can be moved between the engaging grooves 70a with a small force.
(8) As shown in FIG. 15, a bracket 92 having the same edge shape in the plurality of engaging grooves 70a may be used. In this case, the distance between the engaging groove 70a and the upper end of the engaging portion 70 in which the engaging groove 70a is formed is equal between the engaging grooves 70a. The hook can be moved to the engaging groove 70a.

10 housing, 10a opening, 18 door, 18a bottom bottom of door,
20 cushioning material (compressible part), 22 arc-shaped arm (arm), 24 hook-shaped part, 44 through-hole,
46 Arm storage space (internal space)

Claims (3)

An opening / closing door (18) pivoted horizontally below an opening (10a) opened vertically to the housing (10) and tilted downward to open the opening (10a), and the opening / closing door Attached to the side of (18), facing the internal space (46) of the housing (10) through a through hole (44) opened on the side of the opening (10a), formed on the tip side The arm (22) that stops the open / close door (18) at the first position where the opening (10a) is opened at the maximum angle by the hooked portion (24) hitting the contact portion inside the housing (10). )
It is interposed between the lower bottom surface (18a) of the open / close door (18) and the lower peripheral edge of the opening (10a) so that the open / close door (18) is always attached to the first door when the open / close door (18) is opened. It is held at a second position smaller than the maximum angle of one position, and is compressed when an excessive load is applied to the open / close door (18) so that the open / close door (18) exceeds the second position. It is equipped with a compressible part (20) that allows movement,
The hook-like portion (24) of the arm (22) holds a gap with respect to the abutting portion inside the housing (10) when the open / close door (18) is stopped at the second position. Position to,
When an excessive load is applied to further open the opening / closing door (18) beyond the second position, the compressible portion (20) is compressed and the opening / closing door (18) is further moved in the opening direction. The casing is configured to stop the open / close door (18) at the first position when the hook-like portion (24) of the arm (22) hits a contact portion inside the casing (10). Body door structure.   The casing door structure according to claim 1, wherein the compressible portion (20) is provided on a lower bottom surface (18a) of the open / close door (18).   The door structure for a housing according to claim 1, wherein the compressible portion (20) is provided at a lower peripheral portion of the opening (10a).

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