JP2018096546A - Fixing metal fitting of water heating system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixing metal fitting of water heating system that is applied for fixing equipment stored in an outer sheath case of a water heating system in which a bar-ring is formed to have a position setting function by the bar-ring.SOLUTION: This invention relates to a fixing metal fitting (30) that is fixed to an inner surface of an upper part of a box-like outer sheath case (2) of a water heater (1). The fixing metal fitting (30) comprises several fastening parts (36) that are fixed to the outer sheath case (2) with machine screws; and a convex upper bar-ring (39), the box-like outer sheath case (2) has an opening (40) at an upper surface wall (20). A position setting part (41) for use in setting position of the fixing metal fitting when the fixing metal fitting (30) is assembled to the outer sheath case (2) by the opening (40) and the bar-ring (39) internally fitted to the opening (40).SELECTED DRAWING: Figure 4

Description

  The present invention relates to a mounting bracket for mounting a device housed in an outer case of a hot water apparatus.

  Various devices are accommodated in the outer case of the hot water apparatus, but these devices are usually fixed to the outer case via a mounting bracket welded to the outer case or a mounting bracket fastened with screws.

  In the heat exchanger fixing structure described in Patent Document 1, a slit hole and a pair of small holes located on both sides of the slit hole are formed in the outer case. And a pair of protrusions formed on the base.

  After the mounting piece is inserted into the slit hole from the back side, the fixing bracket is moved by a small distance through the notch groove to engage the wall portion of the outer case with the notch groove, and the pair of protrusions are paired with the pair of small holes. The fixing bracket is fixed to the outer case by engaging with the outer case.

  In the component fixing structure described in Patent Document 2, a crank-shaped opening is formed in the main body, and an L-shaped engaging claw that can be inserted into the opening is formed in a shielding plate coupled to the main body case. An end of the shielding plate is coupled to the main body case by inserting a shaped engaging claw into the crank-shaped opening and sliding it along the shape of the opening.

  In the hot air heater described in Patent Document 3, an insertion claw hole and a hook claw hole are formed in the operation portion mounting bracket, and a insertion claw and a hook claw are formed in the receiving unit. Insert the hooking claw into the hole for the insertion claw and the hole for the hooking claw, attach the operation part to the operation part mounting bracket from above, and place the fixed part of the operation part close to the insertion claw so that the insertion claw of the insertion claw It is configured so as not to be detached from the service hole.

Japanese Utility Model Publication No. 61-84458 JP2015-59638A Japanese Patent Laying-Open No. 2015-81737

  If the exterior case is made of colored steel plate, the mounting bracket cannot be welded to the exterior case, so the mounting bracket will be fixed with screws, but the number of screw fastening points will be reduced as much as possible so that the appearance design will not deteriorate. There is a need to. If the structure for positioning the mounting bracket is insufficient when mounting the mounting bracket to the exterior case, it will be difficult to align the plurality of screw holes.

  Further, when the burring is formed on the outer case, the compatibility between the outer case with burring and the outer case without burring is lost. Therefore, it is desirable that the mounting bracket with burring is attached to the outer case.

  An object of the present invention is to provide a mounting bracket for mounting a device housed in an outer case of a hot water apparatus, and has a burring formed and has a positioning function by burring.

  The mounting bracket of the hot water device according to claim 1 is attached to the upper inner surface of the outer case, and the mounting bracket of the hot water device for mounting a device accommodated in the outer case, the mounting bracket is attached to the outer case with a screw. A plurality of fastening portions for fixing and a burring protruding upward, and the exterior case includes an opening in an upper wall, and the opening and a burring fitted in the opening include A positioning part for positioning the mounting bracket when the mounting bracket is assembled to the exterior case is characterized.

  According to a second aspect of the present invention, there is provided the fitting for the hot water device according to the first aspect, wherein the device accommodated in the outer case is an expansion tank, and the burring is attached with a water supply port member that forms a water supply port of the expansion tank. It is a mounting part.

  According to a third aspect of the present invention, there is provided the mounting bracket for the hot water device according to the first or second aspect, wherein a cover fastening portion for fixing a front cover of the outer case is formed on the mounting bracket.

  According to a fourth aspect of the present invention, there is provided a mounting fixture for a hot water device according to any one of the first to third aspects, wherein a heat exchanger mounting portion for mounting a heat exchanger is formed on the mounting bracket.

  The mounting bracket of the hot water device according to claim 5 is characterized in that, in the invention according to any one of claims 1 to 3, an attachment device mounting portion for mounting an accessory device other than a heat exchanger is formed on the mounting bracket. It is said.

  According to the invention of claim 1, the mounting bracket includes a plurality of fastening portions for fixing to the exterior case with screws, an upward convex burring, an opening formed in the exterior case, and the opening. Since the positioning part for positioning the mounting bracket when assembling the mounting bracket to the exterior case with the burring fitted inside the part, the mounting bracket can be positioned by effectively utilizing the burring. The operation | work which fixes a some fastening part with a bis | screw can be performed easily and efficiently.

  According to the invention of claim 2, since the burring is an attachment portion for attaching a water supply port member that forms the water supply port of the expansion tank, the water supply port member that forms the water supply port of the expansion tank in the burring formed on the mounting bracket Can be installed. If the burring is formed on the exterior case, the compatibility of the exterior case is impaired. However, the compatibility of the exterior case can be prevented from being impaired by forming the burring on the mounting bracket.

  According to the invention of claim 3, since the cover fastening portion for fixing the front cover of the exterior case is formed on the mounting bracket, the front cover can be fixed using the mounting bracket effectively.

  According to invention of Claim 4, since the heat exchanger attachment part for attaching a heat exchanger to the said attachment metal fitting was formed, the heat exchanger can be attached effectively using an attachment metal fitting.

  According to the fifth aspect of the present invention, since the attachment device attaching portion for attaching the attachment device other than the heat exchanger is formed on the attachment metal fitting, the attachment device can be attached using the attachment fitting effectively.

It is a front view of a water heater (state which removed the front cover). It is a perspective view of a water heater. It is a perspective view of a water heater (a state in which some devices are removed). It is a perspective view of a mounting bracket. It is an expanded sectional view of the water supply opening part of an expansion tank.

  EMBODIMENT OF THE INVENTION The form for implementing this invention is demonstrated based on an Example.

  As shown in FIGS. 1 to 3, the water heater 1 is a gas combustion type hot water device, and a blower fan 3, a gas combustion burner 4, and a primary heat exchanger are provided in a box-shaped outer case 2 made of a color steel plate. 5 (sensible heat recovery heat exchanger), secondary heat exchanger 6 (latent heat recovery heat exchanger), neutralizer 7 for neutralizing drain generated from the secondary heat exchanger 6, heating heating medium ( Equipment such as an expansion tank 8 that contains water), a control unit 9 and an alarm terminal box 10, a part of an exhaust cylinder 11 that discharges combustion exhaust gas, and piping. Hereinafter, as shown in FIG. 2, the front and rear, left and right, and up and down directions will be defined and described.

The exterior case 2 is configured in a box shape with a top plate 20, a left plate 21, a right plate 22, a bottom plate 23, a back plate (not shown), and a front cover (not shown). A flange 2 a is formed at the front end of the right side plate 22. A hot water device mounting plate 24 protruding upward and downward is fixed to the upper end portion and the lower end portion of the back plate, and the hot water heater 1 is mounted on the wall surface by fixing the hot water device mounting plate 24 to the wall surface with a plurality of screws. .
The mounting bracket 30 of the water heater 1 is a mounting bracket made of a color steel plate that is mounted on the inner surface of the front end portion of the upper surface plate 20 of the outer case 2 and for mounting the equipment accommodated in the outer case 2.

As shown in FIGS. 2 to 5, the mounting bracket 30 includes a rectangular strip-shaped main body 31 that is elongated in the left-right direction and a rectangular shape that is formed integrally with the left end portion of the main body 31 and protrudes backward. A burring forming portion 32, a heat exchanger mounting portion 33 bent from the rear end of the main body portion 31 and projecting downward, and left and right 1 extending forward from the left and right end portions of the main body portion 31 and fixing the front cover A pair of cover fastening portions 34 and an accessory fastening portion 35 that is bent from the rear end of the right end portion of the main body portion 31 and protrudes downward are provided.

  The main body portion 31 and the burring forming portion 32 are formed with six fastening portions 36 having screw holes for fastening the mounting bracket 30 to the inner surface of the upper surface plate 20 of the outer case 2 with screws. Are formed with six screw holes for screwing the six screws 43 fastened to the six fastening portions 36. In addition, an engagement hole 38 for positioning the mounting bracket 30 by engaging a pair of left and right convex portions 37 formed on the upper surface plate 20 is formed in the left and right portions of the main body 31. .

  The burring forming portion 32 is formed with an annular burring 39 convex upward, and a shallow annular groove 32 a is formed on the outer peripheral side of the burring 39. The mounting bracket 30 is mounted such that the main body 31 is in contact with the inner surface of the front end portion of the upper surface plate 20 of the outer case 2. At this time, the burring 39 is fitted into a circular opening 40 formed on the upper surface plate 20 (upper surface wall) of the outer case 2 from below with no backlash.

  The opening 40 and the burring 39 fitted in the opening 40 constitute a positioning portion 41 for positioning the mounting bracket 30 when the mounting bracket 30 is assembled to the exterior case 2. The positioning portion 41 positions the mounting bracket 30 in the left-right direction, and the mounting bracket 30 is positioned in the left-right direction and the front-rear direction by the pair of left and right projections 37 and the pair of left and right engagement holes 38.

  The heat exchanger mounting portion 33 is formed in a band plate shape narrower than the main body portion 31, and two screw holes 42 are formed in the heat exchanger mounting portion 33, and the case of the secondary heat exchanger 6 for recovering latent heat. The upper end portion of the front plate 6a is fastened to the two screw holes 42 with screws 44.

  As shown in FIGS. 1 and 5, the expansion tank 8 is disposed at the upper part of the left side portion inside the exterior case 2, and a water supply introduction pipe 8 a of the expansion tank 8 extends upward, and the water supply introduction pipe 8 a A rubber water supply port member 45 forming a water supply port at the upper end is inserted and attached to the burring 39 from above, and the water supply port member 45 is attached to the burring 39 by fitting the burring 39 into the annular groove 45a of the water supply port member 45. It is done. That is, the burring 39 constitutes an attachment portion for attaching the water supply port member 45 of the expansion tank 8. Note that a cap 46 made of synthetic resin or metal is attached to the water supply port member 45.

  The cover fastening portion 34 includes a projecting piece 34a that protrudes forward from the main body 31 by a predetermined length, and a fastening piece 34b that is bent downward from the front end of the projecting piece 34a. The overhanging piece 34a is formed so as to be gently inclined forward and downward. A screw hole 34c for fastening a screw 47 for fixing the front cover is formed in the fastening piece 34b.

  Two screw holes 35a for fastening the alarm device terminal box 10 which is an accessory device other than the heat exchanger are formed in the accessory device fastening portion 35, and the alarm device terminal box 10 is fastened through the two screw holes 35a. Is done.

The operation and effect of the mounting bracket 30 of the water heater 1 described above will be described.
When attaching the mounting bracket 30 to the exterior case 2 before assembling various devices in the exterior case 2, the main body 31 is positioned on the inner surface of the front end portion of the top plate 20 of the exterior case 2, and the burring 39 is It is inserted into the opening 40 (see FIG. 5) of the upper surface plate 20, the main body portion 31 is brought into contact with the upper surface plate 20, and the pair of convex portions 37 of the upper surface plate 20 are engaged with the pair of engagement holes 38. Thus, the position of the mounting bracket 30 in the front-rear direction and the left-right direction is determined, and the screws 43 are fastened from the screw holes formed in the top plate 20 to the screw holes 36 of the mounting bracket 30 to fix the mounting bracket 30 to the top plate 20. .

Thereafter, the water supply port member 45 is inserted into the burring 39 from above and attached to the burring 39, and the water supply port member 45 is connected to the upper end of the water supply introduction pipe 8a.
Further, when attaching the secondary heat exchanger 6, the upper end portion of the case front plate of the secondary heat exchanger 6 is fastened and attached to the pair of screw holes 42 of the heat exchanger attachment portion 33 with screws 44.

  Further, the fastening piece 10a at the upper end of the alarm terminal box 10 is fastened to the two screw holes 35a of the accessory fastening portion 35 with two screws 35b. When attaching the front cover after mounting the devices in the outer case 2, the upper end of the front cover is fastened by fastening screws 47 into the two screw holes 34 c of the two cover fastening portions 34. Are fastened to the flange 23a of the front end portion of the bottom plate 23 of the exterior case 2 with two screws 48.

  The mounting bracket 30 includes a plurality of fastening portions 36 for fixing to the exterior case 2 with screws, an upward convex burring 39, an opening 40 formed in the exterior case 2, and the opening 40 Since the positioning part 41 for positioning the mounting bracket 30 when the mounting bracket 30 is assembled to the exterior case 2 is configured with the internally fitted burring 39, the mounting bracket 30 can be positioned by effectively utilizing the burring 39. Therefore, the operation of fixing the plurality of fastening portions 36 with the screws 43 can be easily and efficiently performed.

  Moreover, since the burring 39 is an attachment portion to which the water supply port member 45 of the expansion tank 8 is attached, the water supply port member 45 of the expansion tank 8 can be attached to the burring 39 formed on the mounting bracket 30. If the burring 39 is directly formed on the upper surface plate 20 of the outer case 2, the compatibility of the outer case 2 is impaired, but the compatibility of the outer case 2 is impaired by forming the burring 39 on the mounting bracket 30. Can be prevented.

  Further, since the cover fastening portion 34 for fixing the front cover of the outer case 2 is formed on the mounting bracket 30, the front cover can be fixed using the mounting bracket 30 effectively.

  The mounting bracket 30 of the above-described embodiment shows an example, and those skilled in the art can implement the present invention in various forms with various modifications without departing from the spirit of the present invention. Such modifications are also included.

1 Water heater (hot water device)
2 Exterior case 8 Expansion tank 20 Top wall (top plate)
30 Mounting Bracket 33 Heat Exchanger Mounting Portion 34 Cover Fastening Portion 35 Attachment Device Mounting Portion 36 Fastening Portion 39 Burling 40 Opening Portion 41 Positioning Portion 45 Water Supply Port Member

Claims (5)

In the mounting bracket of the hot water device to be attached to the upper inner surface of the outer case and to attach the equipment accommodated in the outer case,
The mounting bracket includes a plurality of fastening portions for fixing to the outer case with screws, and an upward convex burring,
The exterior case has an opening on the top wall,
An attachment fitting for a hot water apparatus, wherein the opening and a burring fitted inside the opening constitute a positioning portion for positioning the attachment fitting when the attachment fitting is assembled to an exterior case. The device accommodated in the outer case is an expansion tank,
The said burring is a mounting part to which the water supply port member which forms the water supply port of the said expansion tank is attached, The mounting bracket of the hot water apparatus of Claim 1 characterized by the above-mentioned.   The mounting bracket for a hot water apparatus according to claim 1 or 2, wherein a cover fastening portion for fixing a front cover of the outer case is formed on the mounting bracket.   The mounting bracket for a hot water apparatus according to any one of claims 1 to 3, wherein a heat exchanger mounting portion for mounting a heat exchanger is formed on the mounting bracket.   The mounting bracket for a hot water apparatus according to any one of 1 to 3, wherein an accessory mounting portion for mounting an accessory other than a heat exchanger is formed on the mounting bracket.