JP2016008795A - Door structure of housing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate some disadvantages found in a conventional fixing structure that although an arc-shaped arm for restricting a releasing angle is fixed to an opening or closing door for closing an opening part of a housing, foaming agent filled at the opening or closing door is not sufficiently applied to a fixing part and a certain damage is generated at a fixing position due to shock that occurs when the opening or closing door is opened or closed.SOLUTION: Foaming agent filled in an opening or closing door 18 is applied to an entire area by fixing an arc-shaped arm 20 to a boss protruded at a back-panel 24 of the opening or closing door 18 and the foaming agent after solidification dampens shock transmitted to a fixing location of the arm 20.

Description

  The present invention relates to a door structure of a housing, and more specifically, relates to an opening / closing door that is pivotally tilted horizontally by an opening provided on a front surface of the housing and tilts obliquely so that the opening can be freely opened. The present invention relates to an arc arm mounting structure for stopping the tilting of the open / close door at a predetermined angle.

  For example, the case 10 of the automatic ice maker shown in FIGS. 17 and 18 includes a refrigeration system such as a compressor and a condenser in the lower machine chamber 12 and an ice making unit ( A large number of ice pieces made in (not shown) are discharged and stored in an ice storage chamber 14 (FIG. 18) provided in the middle stage of the casing 10. As shown in FIG. 18, an opening 16 communicating with the ice storage chamber 14 is opened vertically in the middle front of the housing 10, and the opening 16 is closed by an open / close door 18 that can tilt obliquely downward. (FIG. 17).

  The opening / closing door 18 is pivotally supported horizontally below the opening 16 by a hinge (not shown) provided at the lower edge of the opening / closing door 18 and, as shown in FIG. The opening 16 is opened by tilting it toward the front side of the operator. The opening / closing door 18 is stopped after being opened at an angle of about 60 degrees with respect to the opening portion 16, and an elastic body ( An arc-shaped arm 20 that is tensioned and biased in a later-described manner is provided.

  A conventional structure for attaching the arc-shaped arm 20 to the open / close door 18 will be described with reference to FIGS. FIG. 19 is a perspective view of the open / close door 18 from the back side, and FIG. 20 is a perspective view of the front panel 22 with a back panel (described later) removed from the open / close door 18 from the back side. Further, FIG. 21 is a perspective view of the front side of the back panel 24 with the front panel 22 removed from the door 18. In FIG. 19, the open / close door 18 includes a front panel 22, a back panel 24 aligned on the back side thereof, a sealing packing 26 provided along the four peripheral edges of the back surface of the back panel 24, and an upper surface of the front panel 22. It is basically composed of a handle 28 provided horizontally.

  As shown in FIG. 20, brackets 32 and 32 are fixed to both lower sides of the back side of the front panel 22, and the base portion 20 a of the arcuate arm 20 is fixed to each bracket 32. The hook-shaped portion 20 b of the arc-shaped arm 20 is extended to the back side of the front panel 22. FIG. 21 shows the arc-shaped arm 20 attached to the bracket 32 by a one-dot chain line. That is, although the front panel 22 is not shown in FIG. 21, in the state where the door 18 is assembled, the hook-shaped portion 20b of the arc-shaped arm 20 is placed close to the lower end edges of the back panel 24. It extends to the back side of 24. The pair of brackets 32 also function as a support member for a hinge pin 38 that horizontally supports the open / close door 18 below the opening 16.

  When the open / close door 18 having the arc-shaped arm 20 is attached to the opening 16 of the housing 10, the hook-shaped portion 20 b of the arc-shaped arm 20 extends to the side surface of the housing 10 as shown in FIG. 17. Become. Therefore, for example, an elastic member typified by a tension coil spring 36 shown in FIG. 17 is elastically interposed between the flange-shaped portion 20b of the arc-shaped arm 20 and the engaging portion 34 provided in the machine chamber 14. Thus, the opening / closing door 18 closes the opening 16 by the elasticity of the tension coil spring 36. As shown in FIG. 18, when the user pulls the opening / closing door 18 toward the front against the elasticity of the tension coil spring 36, the opening / closing door 18 tilts obliquely downward to open the opening 16. At this time, the tip end of the hook-shaped portion 20b of the arc-shaped arm 20 is set so as to contact the back member of the casing 10 in which the opening 16 is opened. That is, the arc-shaped arm 20 functions as a stopper that restricts further opening of the door 18.

Japanese Utility Model Publication No. 63-71382 Japanese Patent No. 4225441

  The following difficulties exist in attaching the arcuate arm 20 to the open / close door 18 shown in FIGS. That is, the conventional arc-shaped arm 20 is fixed to the bracket 32 attached to the back side of the front panel 22 by means such as welding or rivet caulking, as shown in FIG. By the way, the opening / closing door 18 combines the back panel 24 and the front panel 22 and fills the foaming agent between both the panels 24, 22 and foams and solidifies the foaming agent. Ensuring strength. However, in the gap between the bracket 32 (fixed to the front panel 22 (not shown)) and the back panel 24 indicated by the one-dot chain line in FIG. 21, the filled foaming agent does not spread sufficiently, resulting in solidification. There is a possibility that the foaming agent afterward is locally insufficient and the strength is lowered.

  This is because there is a gap of about 10 mm between the side edge of the back panel 24 and the mounting surface of the arc-shaped arm 20 with respect to the bracket 32. This is because it produces In this way, if there is a portion where the strength is locally reduced without foam filling between the bracket 32 and the back panel 24, strong stress generated each time the opening / closing door 18 is opened is a foaming agent. Therefore, there is a drawback that a large stress concentration is generated at the attachment portion between the arc-shaped arm 20 and the bracket 32, and the attachment portion is broken or loosened as a result.

  In addition, the front panel 22 and the bracket 32 shown in FIG. 21 are coupled and fixed by caulking by welding or rivets, but the welding marks and caulking portions are exposed even if there is a difference in the degree of the surface of the front panel 22. Therefore, it is pointed out that the design from the outside deteriorates. Further, as shown in FIG. 19, the arc-shaped arm 20 is positioned directly beside the packing 26 on the back side of the front panel 22. In other words, the packing 26 is obstructed by the presence of the arc-shaped arm 20, and must be positioned inside the arc-shaped arm 20, and the opening 16 cannot be sealed at a wide position by the packing 26. Exists.

In order to solve the above-mentioned problems and achieve the intended object, the invention according to claim 1 is pivotally supported horizontally below the opening portion opened vertically to the casing and tilted downward by tilting downward. An opening / closing door that opens the opening, and an arm that is attached to a side of the opening / closing door and faces a side space of the casing through a portion adjacent to the opening of the casing, The back panel, the front panel disposed on the front side of the back panel, the recessed groove provided along the back side of the peripheral edge of the back panel, and can be fitted into the recessed groove to be in close contact with the peripheral edge of the opening. In the door structure of the housing consisting of
The inside of the front panel and the back panel is filled with a foam obtained by foaming and solidifying a foaming agent,
The gist of the invention is that the base of the arm is attached to the side of the foam in the recessed groove through at least one of the front panel and the back panel of the first door.
According to the first aspect of the present invention, the indentation groove for mounting the packing, which is provided along the back panel of the open / close door and protrudes toward the foam which is foamed and solidified on the back panel, has mechanical strength. It is an extremely high part. For this reason, the impact transmitted through the arm as the door is opened and closed can be received by the recessed groove, and the possibility of loosening or damage to the attachment site of the arm can be effectively reduced. Moreover, since the contact area of the foam with respect to the back panel is ensured widely, the impact received in the recessed groove through the arm can be dispersed over a wide range through the foam.

The invention according to claim 2 comprises a plurality of bosses projecting back to back with the recessed grooves in the back panel, and at least a main body part and side pieces bent to intersect the main body part, A plurality of through holes that are opened in the main body and correspondingly fitted to the plurality of bosses, and a female screw that corresponds to a through hole that is threaded into the side piece and opened in the base of the arm. A support plate having a hole, the side piece of the support plate is addressed to a side edge of the back panel, and the through hole formed in the main body is corresponding to the boss of the back panel. The arm is attached to the side edge of the back panel by screwing the male screw into the female screw hole of the supporting plate side piece through the through-hole opened in the base of the arm by fitting and positioning and fixing. The gist is that it is configured.
According to the second aspect of the invention, since the base of the arm is fixed to the boss protruding back-to-back with the recessed groove in the back panel via the support plate, the arm is transmitted through the arm when the door is opened and closed. Since the impact transmitted directly from the support plate to the foam is absorbed and relaxed.

According to a third aspect of the present invention, the through hole is formed in the main body of the support plate by opening a stop hole in at least one of the plurality of bosses protruding back-to-back with the recessed groove in the back panel. Is fitted to the boss in a corresponding manner, and then a male screw is screwed into the boss provided with the stop hole through the through hole of the main body portion, so that the support plate is attached to the back panel. The gist is to fix.
According to the invention of claim 3, since the support plate is screwed to the boss when the support plate is attached to the boss, the support plate is securely attached to the back panel.

According to a fourth aspect of the present invention, a plurality of bosses protruding back-to-back with the recessed groove in the back panel and an end portion side of the base portion of the arm intersect with an extending direction of the arm body. The plurality of passages formed in the bent piece of the arm are formed of a bent piece and a plurality of through holes that are formed in the bent piece and correspondingly match the plurality of bosses. The gist is that the hole is positioned and fixed in a corresponding manner to the boss of the back panel.
According to the invention which concerns on Claim 4, the base part of an arm can be directly attached to the boss which protruded back to back with the recessed groove which is the strongest part in a back panel.

According to a fifth aspect of the present invention, a stop hole is formed in at least one of the plurality of bosses projecting back-to-back in the recessed groove in the back panel, and the communication hole provided in the bent piece of the arm is provided. After positioning the hole correspondingly to the boss, the male screw is screwed into the stop hole provided in the boss through the corresponding through hole of the bent piece, thereby The gist is that it is fixed to the back panel.
According to the fifth aspect of the present invention, when the base portion of the arm is attached to the boss, the arm base portion is screwed to the boss, so that the arm can be securely attached to the back panel.

The invention according to claim 6 is the arm in which a vertically long through hole is opened at a side surface of the back panel and adjacent to the formation position of the boss, and the bent piece is fixed to the back panel. The gist is that a hook-like portion provided at the tip of the arm extends to the back side of the back panel through the vertically long through hole.
According to the invention of claim 6, when the arm is directly attached to the boss of the back panel, the arm extends to the back side through the vertically long hole formed in the back panel. The attachment part of the arm is not exposed to the part, and the appearance is neat and the design can be improved.

  According to a seventh aspect of the present invention, when the arm is attached to the open / close door, the hook-like portion is provided between the base portion and the hook-like portion to which the arm is attached to a side portion of the open / close door. The gist of the invention is that a step portion is formed that is displaced inward from the side portion of the door.

According to an eighth aspect of the present invention, the base portion of the arm is attached to the open / close door in a state where the step portion formed on the arm is directed to the side surface of the back panel. The gist of the invention is that the shape portion is displaced inward from the side portion of the open / close door and extends so that the packing can be positioned as close as possible to the edge of the back panel.
According to the seventh and eighth aspects of the present invention, due to the presence of the step portion formed between the base portion and the bowl-shaped portion in the arm, the packing provided along the back side of the back panel and the arm are very close to each other. Therefore, the opening size of the housing can be set as wide as possible.

  According to the present invention, the back-to-back portion of the recessed groove for attaching the packing provided along the periphery of the back panel forming a part of the open / close door is a foam provided in close contact with the back panel. Because it is backed up, the mechanical strength is extremely high. For this reason, by attaching the base of the arm to the part that is back to back of the recessed part, the shock transmitted to the arm in accordance with the opening / closing operation of the opening / closing door is received by the recessed groove, which is a strong part, and then the foam Can be absorbed.

In Example 1, it is a perspective view of the front side of the door which assembled | attached the front panel to the back panel, Comprising: The arc-shaped arm attached to the side edge of the front panel is extended in the back of this back panel. It is a perspective view which shows the front side of the back panel which removed the front panel from the opening-and-closing door of FIG. 1, Comprising: The support plate fitted to the boss | hub is attached to the side surface side of this back panel. It is a perspective view which shows the back side of the door of FIG. 1, Comprising: The arc-shaped arm extended to the back of a back panel and the packing installed along the outer periphery of this back panel are observed. FIG. 3 is a partial perspective view showing a state in which a boss for fitting and fixing the support plate shown in FIG. 2 is protruded and formed on the side surface of the back panel, and the boss is fitted with a packing recessed in the back side of the back panel. It is formed back to back with a recessed groove for use. It is a perspective view of the arcuate arm used in Example 1 and Example 3. FIG. 5 is a partial perspective view showing a state in which the support plate of FIG. 2 is fitted and fixed to the boss shown in FIG. 4 and the base portion of the arc-shaped arm is attached to the side plate of the support plate. In Example 2, it is a perspective view of the front side of the door which assembled | attached the front panel to the back panel, Comprising: The arc-shaped arm attached to the side edge of the back panel has shown the state extended behind this back panel. . FIG. 11 is a perspective view showing the front side of the back panel with the front panel removed from the open / close door of FIG. 7, and the base of the arc-shaped arm of Example 2 shown in FIG. 11 is fitted and fixed to the boss on the side front side of the back panel. ing. It is a perspective view which shows the back side of the opening-and-closing door of FIG. 7, Comprising: The arc-shaped arm extended to the back of a back panel and the packing installed along the outer periphery of this back panel are observed. It is a fragmentary perspective view which shows the state which protruded and formed the boss | hub which fits the base part of the arc-shaped arm shown in FIG. 8 in the front side of the packing fitting groove recessedly provided in the side back side of the back panel. It is a perspective view of the arc-shaped arm used for Example 2. FIG. 10 shows a state in which the arc-shaped arm of FIG. 8 is fitted and fixed to the boss, and the hook-shaped portion of the arc-shaped arm extends to the back side of the back panel through a vertically long hole formed in the back panel. Exist. FIG. 13 is a cross-sectional view taken along the line F-F of FIG. The state which can be set is shown. It is a partial cross-sectional perspective view of the opening-and-closing door which concerns on Example 3, Comprising: The arc-shaped arm shown with a dashed-dotted line is being fixed to the side edge of a front panel. It is the perspective view which crossed the opening-and-closing door of FIG. 14 by the TT line | wire, Comprising: The base part of an arc-shaped arm has shown the state attached to the plate-shaped piece on both sides of the side edge of a front panel. FIG. 16 is a perspective view in which the open / close door shown in FIG. 15 is attached to a housing of an automatic ice maker, showing a state in which a coil spring is attached that opens the left side surface of the housing and elastically biases the arc-shaped arm. It is a perspective view which removes and shows the right side surface of an automatic ice making machine, Comprising: The opening part opened in the housing | casing is closed by the opening / closing door. It is a perspective view which removes the right side surface of an automatic ice making machine, and shows the opening part opened in the housing | casing by inclining an opening-and-closing door diagonally. It is the perspective view which observed the door shown in FIG. 18 from the back side, Comprising: The attachment state of the conventional arcuate arm is shown. It is the perspective view which observed the front panel of the state which removed the back panel from the door shown in FIG. 19 from the back side, Comprising: The state which attached the base of the arc-shaped arm to the bracket is shown. It is the perspective view which observed the back panel in the state where the front panel was removed from the opening-and-closing door shown in FIG. 19 from the front side, Comprising: The arc-shaped arm and bracket which are shown with a dashed-dotted line are attached to the back side of the front panel which is not shown in figure.

  Next, the door structure of the housing according to the present invention will be described with reference to the accompanying drawings by giving a preferred embodiment. The casing 10 in the present invention is a casing of an automatic ice making machine in the embodiment, and the configurations of the door 18 and the arc-shaped arm 20 are basically the same as those shown in FIGS. 17 to 21. Therefore, the description of the common members already described is omitted. 1 to 6 show the door structure of the first embodiment, FIGS. 7 to 13 show the door structure of the second embodiment, and FIGS. 14 to 16 show the door structure of the third embodiment. Furthermore, since the arm 20 shown in the embodiment is, for example, an arc-shaped piece shown in FIG. 5, the term “arc-shaped arm” is used. However, since there is a straight straight piece arm that is not arcuate, the term “arm” is simply used in the claims.

[About Example 1]
The open / close door 18 according to the first embodiment is obtained by covering the front side of the back panel 24 shown in FIG. 2 with the front panel 22 shown in FIG. As a result, the opening / closing door 18 is provided with excellent heat insulation and specific strength. FIG. 3 is a view of the opening / closing door 18 shown in FIG. 1 observed from the back side, and a packing 26 for sealing the opening 16 when the opening / closing door 18 is closed is provided on the inner periphery of the back side of the back panel 24. It is installed alongside. The packing 26 is fitted and locked in a recessed groove 40 (FIG. 4) recessed in the inner periphery on the back side of the back panel 24. That is, as shown in FIG. 4 which is an enlarged perspective view of a part surrounded by a circle C in FIG. A U-shaped recessed groove 40 that allows insertion is recessed along the inner circumference of the back panel 24. As will be described later, the arc-shaped arm 20 is attached to a portion of the open / close door 18 adjacent to the recessed groove 40 provided along the back side of the back panel 24.

  The above configuration will be described in detail with reference to FIGS. 4, 5 and 6. FIG. In FIG. 4, the above-described recessed groove 40 is formed in the back side of the back panel 24, and the packing 26 is fitted into the recessed groove 40. Then, on the front side of the back panel 24, three cylindrical bosses 44 project integrally with the back panel 24 at a portion that is back-to-back with the recessed groove 40, for example, while maintaining a required interval in a vertical row. It is installed. Of the three bosses 44, the upper and lower bosses 44a and 44c have a small-diameter cylindrical projection 46 at the head, and a female screw hole 48 is threaded into the intermediate boss 44b. Has been. The small-diameter protrusions 46 of the two upper and lower bosses 44a and 44c are respectively fitted into two through holes 52a and 52c opened corresponding to the support plate 42 described later, and are inserted into the female screw holes 48 of the central boss 44b. The male screw 50 is screwed through the through hole 52b opened correspondingly to the support plate 42.

  The support plate 42 shown in FIG. 4 is fitted to the boss 44 and mechanically attaches the arc-shaped arm 20 to the back panel 24 by fixing the base 20a of the arc-shaped arm 20 shown in FIG. It is. That is, the support plate 42 is made of, for example, a rigid metal and is bent into at least an L shape or a U shape. The support plate 42 shown in FIG. 4 has a U-shape composed of a main body portion 42a and a left side piece 42b and a right side piece 42c that are bent in the same direction so that the left and right sides intersect the main body portion 42a. The support plate 42 shown in FIGS. 4 and 6 has a tongue piece 42d obtained by bending the right piece 42c further outward. As shown in FIG. 6, when the support plate 42 is fitted to the boss 44 (described later), the tongue piece 42d comes into contact with the front side of the back panel 24 and stably supports the support plate 42. Although supporting the role, the tongue piece 42d may be omitted.

  Three through holes 52a, 52b, and 52c are formed in the main body portion 42a of the support plate 42 while maintaining a predetermined interval in a vertical line. Of the three through holes, the upper through hole 52a is fitted into the small diameter projection 46 of the upper boss 44a, as shown in FIG. 6, and the lower through hole 52c is the small diameter of the lower boss 44c. The dimensions are set so as to fit the protrusion 46. Further, the central through hole 52b is aligned with the female screw hole 48 of the central boss 44b when the support plate 42 is directed to the boss 44 as shown in FIG. Is screwed into the female screw hole 48 through the through hole 52b, so that the support plate 42 is securely attached to the boss 44. Further, in the left piece 42b (FIG. 4) of the support plate 42, two female screw holes 54 are threaded while maintaining a required interval in a vertical line, and the base 20a of the arc-shaped arm 20 shown in FIG. Used for fastening (see below). In the three bosses 44 shown in FIG. 4, the small-diameter projections 46 are respectively provided on the upper boss 44a and the lower boss 44c, and the female screw hole 48 is threaded on the middle boss 44b. On the contrary, the female screw holes 48 may be provided in the upper and lower bosses 44 and the small-diameter protrusions 46 may be provided in the middle bosses 44.

  FIG. 5 shows the outline shape of the arc-shaped arm 20 used in Example 1 and Example 3 described later in a perspective state. Although the basic shape of the arc-shaped arm 20 having the hook-shaped portion 20b and the base portion 20a is not changed, the arc-shaped arm 20 is placed between the hook-shaped portion 20b and the base portion 20a as shown in FIG. When attached to the 18 front panels 22, a step portion 20 c is formed for extending the flanged portion 20 b so as to be displaced inward from the side edges of the front panel 22 and the back panel 24. . Further, in the base portion 20a of the arc-shaped arm 20, two through holes 56 corresponding to the two female screw holes 54 screwed into the left piece 42b of the support plate 42 are opened. As shown in FIG. 6, these two through holes 56, 56 are formed by screwing the left side piece 42b when the base 20a of the arc-shaped arm 20 is directed to the left side piece 42b of the support plate 42. The arc-shaped arm 20 is securely attached to the support plate 42 by aligning with the two female screw holes 54, 54 and screwing the countersunk screw 58 through the through hole 56. Although not shown in FIG. 5, each through hole 56 formed in the base portion 20 a is counterbored with a countersunk portion that receives the conical surface of the head of the countersunk screw 58.

  A process of attaching the arcuate arm 20 of FIG. 5 to the boss 44 shown in FIG. 4 via the support plate 42 in the open / close door 18 shown in FIGS. 2 and 3 will be described. First, the support plate 42 shown in FIG. 4 is attached to the back panel 24 forming the back surface of the open / close door 18 via the boss 44. That is, the upper through hole 52a and the lower through hole 52c that are vertically formed in the main body 42a of the support plate 42 are formed into the small diameter protrusion 46 of the upper boss 44a and the small diameter protrusion 46 of the lower boss 44c shown in FIG. The support plate 42 is positioned with respect to the back panel 24 by being inserted. Since the female screw hole 48 threaded into the intermediate boss 44b at this time is axially aligned with the intermediate through hole 52b in the support plate 42, the male screw 50 is connected to the female screw through the through hole 52b. By screwing into the hole 48, the support plate 42 is securely fixed to the back panel 24 via the plurality of bosses 44. Since the boss 44b is made of a synthetic resin, a stop hole (blind hole) may be provided in the boss 44b instead of the threading of the female screw hole 48. In this case, as the male screw 50, a tapping screw for self-threading the retaining hole 48 is employed.

  After fixing the support plate 42 to the boss 44 of the back panel 24, the arc-shaped arm 20 shown in FIG. 5 is attached to the support plate 42. As shown in FIG. 1, the arc-shaped arm 20 is attached to the support plate 42 via a side edge of the front panel 22. That is, as shown in FIG. 6, the base 20a of the arc-shaped arm 20 is placed over the side edge of the front panel 22 (not shown) and the support plate 42 positioned at the vertical edge of the back panel 24. The two through-holes 56 and 56 that are addressed to the left-side piece 42b and are opened in the base portion 20a correspond to the two female screw holes 54 and 54 that are threaded into the left-side piece 42b. Next, the arc-shaped arm 20 extends the hook-shaped portion 20b to the back side of the back panel 24 by screwing the countersunk screw 58 into the female screw hole 54 through the corresponding through hole 56. And attached to the front panel 22 of the door 18.

As described above, the arc-shaped arm 20 includes the recessed groove 40 for mounting the packing along the periphery of the back panel 24 that forms a part of the opening / closing door 18. This part protrudes to the side of the back panel 24 where the foam is solidified, and an extremely high mechanical strength is obtained. Since the base portion of the arm is attached to the back-to-back portion of the recessed groove 40 with improved mechanical strength, it is generated when the opening / closing door 18 is opened and closed and transmitted to the arm. The impact is primarily received by the recessed groove 40 having improved strength, and then the impact is secondarily absorbed and relaxed by the foam. Therefore, the possibility of loosening or damage to the mounting portion of the arm can be significantly reduced.
More specifically, after the arc-shaped arm 20 is attached to the door 18, the foaming agent filled in the door 18 is foamed and solidified inside, and the periphery of the support plate 42 and the back panel 24 is solidified. Filled with foam afterwards. Therefore, a large load generated each time the opening / closing door 18 is opened and closed is received by the support plate 42 via the arc-shaped arm 20, and the load is a foam that exists between the support plate 42 and the back panel 24. Is transmitted to. Since the adhesion area (surface area) between the foam and the back panel 24 is larger than the adhesion area between the support plate 42 and the foam, the back panel 24 can receive the load in a wide area, Excessive stress concentration does not occur at the attachment site of the arcuate arm 20.

[About Example 2]
7 to 13 show a door structure according to the second embodiment. Since the basic structure of the second embodiment is common to the structure described in the first embodiment, the configuration different from the first embodiment will be mainly described. That is, in the first embodiment, the support plate 42 is used as a means for fixing the arc-shaped arm 20 to the boss 44. However, in the second embodiment, the support plate 42 is not used, and the base 20a of the arc-shaped arm 20 is attached to the base 20a. It is designed to be attached directly to the boss 44.

  FIG. 10 shows the structure of the boss 44 shown in FIG. 4 of the first embodiment, in the vicinity of the side edge of the back panel 24, in which the boss 44 is formed on the front side facing the recessed groove 40. Exactly the same. As shown in FIG. 10, in the vicinity of the side edge of the back panel 24 and adjacent to the boss 44, as shown in FIG. 12, a vertically long square hole that allows the arc-shaped arm 20 to be inserted. 60 has been established.

  The shape of the arc-shaped arm 20 used in the second embodiment is shown in FIGS. That is, the arc-shaped arm 20 shown in FIG. 11 is common to the arc-shaped arm 20 of the first embodiment in that it has the hook-shaped portion 20b and the stepped portion 20c. The difference between the two is the portion of the base 20a. The arc-shaped arm 20 shown in FIG. 11 has a bent piece 20d that is bent so that the open end side of the base 20a intersects the hook-shaped portion 20b. Is formed. In the bent piece 20d, three through holes 62 similar to those provided in the main body portion 42a of the support plate 42 in the first embodiment are formed in a vertical line at a required interval. The through holes 52 of the support plate 42 correspond to the bosses 44, respectively. However, the through holes 62 of the arc-shaped arm 20 in the second embodiment also correspond to the bosses 44, respectively. The dimensions are set so that

  Next, a procedure for attaching the arcuate arm 20 shown in FIG. 11 to the back panel 24 will be described. As shown in FIG. 12, when the flange-shaped portion 20b of the arc-shaped arm 20 is inserted into the square hole 60 of the back panel 24, the bent piece 20d of the arc-shaped arm 20 contacts the boss 44 shown in FIG. Touched. The small-diameter projection 46 of the upper boss 44a and the small-diameter projection 46 of the lower boss 44c correspond to the upper through hole 62 and the lower through hole 62 formed in the bent piece 20d of the arc-shaped arm 20. The arc-shaped arm 20 is positioned with respect to the back panel 24. Next, as shown in FIG. 12, the male arm 64 is screwed into the stop hole 48 formed in the middle through-hole 62 formed in the bent piece 20 d of the arc-shaped arm 20, so that the arc-shaped arm 20 is connected to the back panel 24. It is securely fixed to. The stop hole 48 may be a female screw hole as described above. In the boss 44 shown in FIG. 10 as well, the female screw holes 48 may be threaded into the front boss 44a and the lower boss 44c, respectively, and the small-diameter protrusion 46 may be projected from the middle boss 44b.

  A state in which the arc-shaped arm 20 is fixed to the back panel 24 is shown in FIG. The state in which the bent piece 20d of the arc-shaped arm 20 is fitted and fixed to the boss 44 formed so as to be back-to-back with the recessed groove 40 is well understood from FIG. Further, the stepped portion 20c formed on the arc-shaped arm 20 causes the flange-shaped portion 20b of the arc-shaped arm 20 to be displaced inward from the side portion of the open / close door 18 and thereby extend the packing 26. It can be positioned as close as possible to the edge of the back panel 24.

  As described above, in the second embodiment, since the arc-shaped arm 20 can be attached to the back panel 24 without using the support plate 42, there is an advantage that contributes to a reduction in the number of parts and assembly steps. In the case where a foaming agent is filled between the front panel 22 and the back panel 24 in the open / close door 18, the foaming agent is used for the boss 44 and the bent piece 20d of the arc-shaped arm 20 as in the first embodiment. Since it spreads to the surroundings sufficiently, the solidified foaming agent reinforces the attachment site of the arc-shaped arm 20 and exhibits a buffering effect.

[About Example 3]
14 to 16 show a door structure according to the third embodiment. The structure of the third embodiment is basically the same as the structure of the first embodiment. That is, as the arc-shaped arm 20 used in the first embodiment, as shown in FIG. 5 of the first embodiment, one having a step portion 20c is used. However, the formation of the step portion 20c is essential in the first embodiment. It is not a configuration. However, in the third embodiment, it is essential to form the stepped portion 20c on the arc-shaped arm 20. In this case, as shown in FIG. 14, a dam portion 66 that is bent toward the left edge of the front panel 22 is formed at the left edge of the back panel 24. The dam portion 66 conceals the end face of the front panel 22 and the cushion portion 26a of the packing 26 (the portion removed from the fitting portion into the recessed groove 40), making it difficult to visually recognize from the outside and improving the design. It is something to be made.

  As shown in FIG. 14, the dam portion 66 is formed with a notch portion 68 that receives the base portion 20a of the arc-shaped arm 20 in the thickness direction when the arc-shaped arm 20 is attached to the door 18. . In other words, the cutout portion 68 prevents the arc-shaped arm 20 from jumping out of the dam portion 66. Further, since the stepped portion 20c is formed in the arc-shaped arm 20, as can be understood from FIGS. 14 and 3, the cushion portion 26a of the packing 26 is easily overlapped. The cushioning is not impaired.

10 housings, 16 openings, 18 doors, 20 arms (arc-shaped arms),
20a base, 20b bowl, 20c step, 20d bent piece,
22 front panel, 24 back panel, 26 packing,
34 engaging portion, 36 elastic body (coil spring), 40 recessed groove, 42 support plate,
42a body part, 42b side piece (left side piece), 44 boss, 48 stop hole (female screw hole),
50 male screw, 52 through hole, 54 female screw hole, 56 through hole,
58 male screw (head screw), 60 through hole (square hole), 62 through hole

Claims (8)

An opening / closing door (18) pivoted horizontally below the opening (16) opened vertically to the housing (10) and tilted downward to open the opening (16), and the opening / closing door An arm (20) attached to the side of (18) and facing the side space of the casing (10) through a portion adjacent to the opening (16) of the casing (10), The open / close door (18) includes a back panel (24), a front panel (22) disposed on the front side of the back panel (24), and a recessed groove ( 40) and a packing structure (26) that fits into the recessed groove (40) and can be in close contact with the periphery of the opening (16).
The inside of the front panel (22) and the back panel (24) is filled with a foam obtained by foaming and solidifying a foaming agent,
The base (20a) of the arm (20) is connected to the foam in the recessed groove (40) via at least one of the front panel (22) and the back panel (24) of the opening / closing door (18). The door structure of the housing | casing characterized by being attached to the side.   A plurality of bosses (44) protruding back-to-back with the recessed groove (40) in the back panel (24), and at least the main body (42a) and the main body (42a) are bent so as to intersect. The side piece (42b) is formed in the body portion (42a), and is fitted into the plurality of through holes (52) correspondingly fitted to the plurality of bosses (44), and the side piece (42b). A support plate (42) having a female screw hole (54) correspondingly corresponding to a through hole (56) opened in the base (20a) of the arm (20) by being threaded, the support plate ( 42) the side piece (42b) of the back panel (24) is routed to the side edge of the back panel (24), and the through hole (52) opened in the main body (42a) (44) correspondingly fitted and positioned and fixed, and the male screw (58) is inserted into the support plate side piece (42b) through the through hole (56) opened in the base (20a) of the arm (20). The arm (20) is screwed into the female screw hole (54). Door structure according to claim 1, wherein the housing is configured to attach to the side edges of the panel (24).   A stop hole (48) is formed in at least one of the plurality of bosses (44) projecting back-to-back with the recessed groove (40) in the back panel (24), and the main body of the support plate (42) The through hole (52) opened in (42a) is fitted and positioned correspondingly to the boss (44), and then the main body portion (42a) is inserted into the boss (44) provided with the stop hole (48). The housing door structure according to claim 2, wherein the support plate (42) is fixed to the back panel (24) by screwing a male screw (50) through the through hole (52).   A plurality of bosses (44) projecting back-to-back with the recessed groove (40) in the back panel (24), and an end side of the base (20a) of the arm (20) are extended to the arm body. A bent piece (20d) formed so as to intersect with the direction, and a plurality of through holes (62) which are established in the bent piece (20d) and correspondingly match the plurality of bosses (44). The plurality of through holes (62) opened in the bent piece (20d) of the arm (20) are fitted to the boss (44) of the back panel (24) correspondingly. The door structure of the housing according to claim 1, wherein the housing is positioned and fixed.   A stop hole (48) is formed in at least one of the plurality of bosses (44) projecting back to back in the recessed groove (40) of the back panel (24), and the bending of the arm (20) is performed. After positioning the through hole (62) opened in the piece (20d) correspondingly to the boss (44), the bent piece is inserted into the stop hole (48) provided in the boss (44). The housing according to claim 4, wherein the arm (20) is fixed to the back panel (24) by screwing a male screw (64) through the corresponding through hole (62) of (20d). Body door structure.   A vertically long through hole (60) is formed on a side surface of the back panel (24) and at a position adjacent to the formation position of the boss (44), and the bent piece (20d) is connected to the back panel (24). The arm (20) fixed to the upper end of the arm extends from the back panel (24) to the back side of the back panel (24) through the vertically long through hole (60). 5. The door structure of the housing according to 5.   Between the base part (20a) and the hook-shaped part (20b) to which the arm (20) is attached to the side part of the open / close door (18), the arm (20) is connected to the open / close door (18). The step part (20c) which displaces this bowl-shaped part (20b) inside the side part of the said opening-and-closing door (18) when attached is formed in any one of Claims 1-6. Door structure of the housing.   With the step portion (20c) formed on the arm (20) being directed to the side surface of the back panel (24), the base portion (20a) of the arm (20) is connected to the open / close door (18). By attaching, the hook-like portion (20b) of the arm (20) is displaced inwardly than the side portion of the open / close door (18) and extends, whereby the packing (26) is extended to the back panel (24). The housing door structure according to claim 7, wherein the door structure can be positioned as close as possible to an edge of the housing.

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