JP7171308B2 - Water discharge device and washbasin - Google Patents

Description

TECHNICAL FIELD The present invention relates to a water discharging device and a washbasin equipped with the same.

2. Description of the Related Art Conventionally, kitchen counters, toilets, washstands in washrooms, etc. are equipped with a faucet device having a handle (operating lever) and a water discharge device that discharges hot or cold water supplied from the faucet device. A faucet system is widely used. Further, in general, a faucet device and a water discharge device are fixedly installed on a kitchen counter, a top plate of a washbasin, or the like.

On the other hand, in Patent Document 1, a base attached to a wall surface, a movable part (spraying part) provided on the tip side and having a spout for spouting hot water, a joint part for moving the movable part, A water faucet device/water discharge device is disclosed that is connected to a movable part and includes a water passage member for supplying hot water from a water supply source to a water discharge port. Further, the joint portion is formed so as to rotate around a rotation axis orthogonal to the water-permeable member, and the water-permeable member is arranged inside the joint portion as a separate body from the joint portion.

In the faucet device/water discharge device of Patent Document 1, a water-conducting member protrudes forward from a wall surface of a bathroom vanity or the like, and a movable portion is connected to the tip of the water-conducting member via a separate joint. there is Therefore, the orientation of the movable portion (spout) can be freely changed by the joint portion.

JP 2017-20194 A

However, in the above-mentioned faucet device/water discharge device, the base is attached to the wall rising from the washbasin, the water-conducting member extends from the base to the front side in a substantially horizontal horizontal direction, and the tip is movable via a joint. department is provided. Therefore, there is a problem that the water discharge space is narrowed by the horizontally extending and forwardly projecting water discharge member (water discharge pipe), resulting in poor usability.

SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a water discharger and a washbasin that are capable of appropriately securing a water discharge space and improving usability.

The inventors have found means for suitably securing the water discharge space, and have completed the present invention.

(1) The water discharger of the present invention has a pedestal portion fixed to a laterally facing mounting surface, a tubular water discharge pipe portion extending by connecting the rear end to the pedestal portion, and a water discharge port. and a water discharger provided integrally or detachably on the tip side of the water discharge pipe, wherein the water discharge pipe connects the lower end of the rear end to the pedestal and extends upward. and a curved portion that is formed in an upwardly convex arc shape connecting the rear end to the upper end of the rising portion, and is formed integrally with the pedestal so as to be rotatable around an axis extending in the vertical direction. It is characterized by being provided connected to the part.

(2) In the water discharging device of the present invention, in the water discharging device of (1) above, the base portion has a fixing portion for fixing to the mounting surface and a connection for connecting the rising portion of the water discharge pipe portion. and the fixing portion and the connecting portion are integrally formed so that the axis of the inner water passage hole of the fixing portion and the axis of the inner water passage hole of the connecting portion intersect at an obtuse angle. may be

(3) The water discharging device of the present invention is the water discharging device according to (1) or (2) above, which is provided by inserting the pedestal portion and the water discharge pipe portion into the water flow holes in the water discharge pipe portion and connecting to the water discharge portion. The water supply hose may be a resin hose.

(4) The water discharging device of the present invention is the water discharging device according to any one of (1) to (3) above, in which the lower end portion of the tubular joint member is fitted into the water passage hole of the pedestal. and fixing it to the pedestal, inserting the part of the joint member protruding upward from the upper end of the pedestal into the water passage hole of the water discharge pipe and fitting the water discharge pipe to the pedestal It is rotatably connected via the joint member, and the joint member extends forward on the water discharge port side of the lower end and downward from the rear side on the mounting surface side to fit into the pedestal. It may be formed with mating extension fittings.

(5) The washbasin of the present invention includes a bowl portion capable of receiving water, and a wall portion provided behind the bowl portion and protruding upward, the wall portion being the mounting surface, and the ( It is characterized by fixing the water discharging device according to any one of 1) to (4).

According to the present invention, the gooseneck-shaped water discharging device including the rising portion and the upwardly convex arc-shaped curved portion is attached to the mounting surface facing the lateral direction by fixing the pedestal portion to the mounting surface. Compared to the case where a conventional water discharge device extending forward (horizontally and laterally) is provided, a large water discharge space can be secured, and usability can be greatly improved.

1 is a perspective view showing a washbasin according to one embodiment of the present invention; FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the mixed faucet system which consists of a faucet apparatus and a water discharging apparatus which concern on one Embodiment of this invention, and a washstand. It is the figure which looked at the mixed faucet system which consists of the faucet apparatus and discharge apparatus which concern on one Embodiment of this invention from the back side of the washbowl. BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which shows the discharging apparatus which concerns on one Embodiment of this invention. It is a figure which shows the state which pulled out the water discharging part (water discharging head) of the water discharging apparatus which concerns on one Embodiment of this invention, and a water supply hose. It is a figure which shows that the water discharge pipe part (and water discharge part) of the water discharging apparatus which concerns on one Embodiment of this invention is comprised so that rotation is possible.

1 to 6, a water discharging device and a washbasin according to an embodiment of the present invention will be described below.

For example, as shown in FIGS. 1 and 2, the washbasin A of this embodiment includes a lower storage cabinet 1, a washbasin 2 provided above the lower storage cabinet 1, and water or hot water in the washbasin 2. It is configured with a mixed faucet system B that discharges. The washstand A of this embodiment may of course be configured as a washstand by providing a mirror cabinet (upper storage cabinet) above the washbasin 2 .

The washbasin 2 is provided behind a bowl part 3 of a washbowl capable of receiving water, and behind the bowl part 3, extending from one side end to the other side end in the width direction of the left and right and protruding upward. It is formed with a rear wall portion (wall portion) 4 .

The rear wall portion 4 of this embodiment has a front wall surface on the side of the bowl portion 3 (mounting surface facing the lateral direction) that is gradually thickened from the bottom end to the top end so that the thickness of the rear wall portion 4 gradually decreases from the bottom end to the top end. It is formed as an inclined surface (substantially vertical mounting surface) that inclines backward.

As shown in FIGS. 1, 2, and 3, the mixed faucet system B includes a faucet device B1 including a faucet body 5 and a handle 6, and discharges water or hot water in response to the operation of the handle of the faucet device B1. It is composed of a water discharging device B2.

The water faucet main body 5 is equipped with an inflow port for cold water and hot water and an outflow port for water or hot water. A water inlet pipe 7 and a hot water inlet pipe 8 are inserted and connected to inlets of water and hot water of the faucet main body 5, respectively. A connection hose 9 having elasticity is inserted and connected to the outflow port. The water inlet pipe 7 and hot water inlet pipe 8 are connected to a water supply source and a hot water supply source, respectively.

Inside the faucet main body 5, a valve unit is provided for mixing water and hot water and opening/closing the water or hot water. By appropriately operating the handle 6 attached to the faucet main body 5, the valve unit can be operated, that is, the hot water temperature adjustment, water discharge, and water stop operations can be performed.

As shown in FIG. 4 (FIGS. 1, 2, and 3), the water discharging device B2 of the present embodiment includes a pedestal portion 10 for attaching to the washstand A and fixing the water discharging device B2, and a rear portion of the pedestal portion 10. It is composed of a water discharge pipe portion 11 provided by connecting ends thereof, and a water discharge portion 12 provided at the tip of the water discharge pipe portion 11 for discharging water or hot water. In this embodiment, as shown in FIG. 5 , the water discharger 12 is a water discharger head, which is detachably attached to the water discharge pipe 11 .

As shown in FIG. 4 (FIGS. 1, 2, and 3), the pedestal portion 10 is for connecting and fixing the water discharging device B2 to the washbasin A, and has an insertion hole through which the water supply hose 15 is inserted. (Inner water passage hole) 16 is formed through and is formed in a substantially tubular shape (substantially cylindrical shape). The pedestal portion 10 of the present embodiment also includes a fixing portion 10a for fixing to the washbasin A, and a connection portion 10b to which the rear end/lower end of the water discharge pipe portion 11 is connected. Further, the fixing portion 10a is formed so that the axis O1 of the insertion hole 16 faces the lateral direction (substantially lateral direction), and the connection portion 10b is formed so that the axis O2 of the insertion hole 16 faces the vertical direction (substantially the vertical direction). is formed in Thus, the base portion 10 of the present embodiment is formed into a substantially L shape by bending the fixing portion 10a and the connecting portion 10b.

Further, the base portion 10 of the present embodiment is arranged such that the axis O1 of the insertion hole 16 of the fixing portion 10a and the axis O2 of the insertion hole 16 of the connection portion 10b intersect at an obtuse angle, that is, an angle θ greater than 90 degrees. formed.

The pedestal portion 10 is mounted on the back side of the front wall 4a of the rear wall portion 4 via a through hole 17 formed through a predetermined position of the front wall (front wall surface, mounting surface) 4a of the rear wall portion 4 of the washbasin 2. That is, they are connected to the hose guide 18 provided inside the rear wall portion 4 using screws 29 . The front wall 4a of the rear wall portion 4 is sandwiched between the fixing portion 10a and the hose guide 18, and fixed at a predetermined position of the rear wall portion 4. As shown in FIG. At this time, a water stop packing is interposed between the fixed portion 10a of the base portion 10 and the front wall 4a of the rear wall portion 4 to ensure the water stop performance of this portion.

The pedestal 10 has a drain hole 19 formed through the lower end/lower surface of the fixed portion 10a for discharging water that has entered the insertion holes 16 of the pedestal 10 and the water discharge pipe portion 11 to the outside.

Here, the water supply hose 15 of this embodiment is a resin hose, and is formed, for example, by integrally covering the outside of a crosslinked polyethylene pipe with a fiber fabric/fiber sheet made of polyethylene terephthalate resin. As a result, the water supply hose 15 of the present embodiment is extremely lightweight and highly flexible as compared with a conventional water supply hose formed by covering the outside of a vinyl chloride pipe with a metal material. It's becoming

Next, the water discharge pipe portion 11 of the present embodiment is an integrally formed tubular member, and includes a rising portion 11a extending upward by connecting the lower end/rear end to the connecting portion 10b of the pedestal portion 10, and the rising portion 11a. The rear end is connected to the upper end, and the curved portion 11b is formed in an upwardly convex arc shape, and the straight portion 11c extends linearly from the tip of the curved portion 11b so as to gradually incline downward as the axis O4 goes forward. and That is, the water discharge pipe portion 11 (water discharger B2) of the present embodiment is configured as a so-called gooseneck-shaped spout (water discharger B2).

In addition, a tubular holding member 11d having a rear end side fitted and fixed inside the straight portion 11c of the water discharge pipe portion 11 and having a front end side projecting outward in the direction of the axis O4 from the straight portion 11c and thus from the front end of the water discharge pipe portion 11. is installed.

The rising portion 11a of the discharge pipe portion 11 of the present embodiment is arranged vertically (substantially vertically) so that the direction of the axis O3 is 90°±5° with respect to the horizontal direction.

As shown in FIGS. 4 and 6, the water discharge pipe portion 11 is connected to the connection portion 10b of the base portion 10 via a joint member 20 so as to be rotatable about axes O2 and O3 extending in the vertical direction.

More specifically, the joint member 20 is formed in a substantially circular tubular shape, and the lower end side (substantially lower half portion) of the joint member 20 is inserted into the insertion hole (inner hollow water passage hole) 16 of the connection portion 10b of the base portion 10 so as to be aligned with the axis line of the joint member 20 . are coaxially arranged, and the upper end side (substantially the upper half) is arranged so as to protrude upward from the upper end of the connecting portion 10b. Further, the joint member 20 is fixed to the connection portion 10b of the base portion 10 at its lower end side using a stop ring 21, which is a stopper.

When the upper end side of the joint member 20 attached to the pedestal portion 10 in this way is fitted into the insertion hole 16 from the lower end of the rising portion 11a of the water discharge pipe portion 11, the water discharge pipe portion 11 is connected to the rising portion 11a and the joint member. The axes 02 and 03 of the connection portion 10b of the pedestal portion 10 are arranged coaxially with each other, and the discharge pipe portion 11 and the pedestal portion 10 are connected in this state. The joint member 20 and the rising portion 11a of the water discharge pipe portion 11 are connected using a stop ring 21, which is a stopper, and the stop ring 21 rotates around the axes O2 and O3 on the upper end side of the joint member 20. connected for movement.

Thus, in the water discharger B2 of the present embodiment, the water discharge pipe portion 11 is provided so as to be rotatable about the axes O2 and O3 extending in the vertical direction with respect to the base portion 10 .

The outer surface of the joint member 20 is formed with one ring-shaped water stop material holding groove that is recessed radially inward and connected in the circumferential direction, one on the lower end side and two on the upper end side. A water stop member 22 such as a ring is fitted and attached. As a result, the water stopping performance of the connecting portion between the water discharge pipe portion 11 and the base portion 10 is preferably ensured, and the desired sliding frictional force (rotational operation force) is generated without rattling, so that the water discharge pipe can be suitably operated. A portion 11 is rotatably provided.

Here, the joint member 20 is required to have the ability to withstand an external force that acts on the joint member 20 when the water discharge pipe portion 11 is rotated, and that this external force is received and transmitted to the base portion 10 .

On the other hand, as shown in FIG. 4, the joint member 20 of the present embodiment is formed so that the water discharge portion 12 side on the front side of the lower end extends downward from the rear wall portion 4 side of the washbasin 2 on the rear side. ing. The extension fitting portion 20a, which is the extension portion of the joint member 20, is largely inserted into the connection portion 10b of the pedestal portion 10 for fitting. As a result, even when the water discharge pipe portion 11 is configured to be rotatable, the joint member 20 as well as the connection portion between the water discharge pipe portion 11 and the pedestal portion 10 can sufficiently secure the proof stress.

In this embodiment, a stepped portion 23 is provided on the front inner surface of the connection portion 10b of the pedestal portion 10, and the joint member 20 is also provided with a stepped portion 23 so as to engage with the stepped portion 23. . Then, when the lower end side of the joint member 20 is inserted into the connection portion 10b of the base portion 10 so that the stepped portions 23 are engaged with each other, the joint member 20 is positioned, and the extended fitting portion 20a is suitably connected to the base portion. 10 is fitted in a state of deeply entering the inside of the connecting portion 10b. As a result, even when the water discharge pipe portion 11 is configured to be rotatable, the joint member 20 and thus the joint portion between the water discharge pipe portion 11 and the pedestal portion 10 can more reliably secure the proof stress.

The joint member 20 of the present embodiment is formed on the lower end side of the rear side below an inwardly convex bent corner portion 24 formed on the upper portion connecting the fixing portion 10a and the connecting portion 10b on the inner surface of the pedestal portion 10. A corner downward extension 20b is provided.

Since the joint member 20 is provided with the corner downwardly extending portion 20b, the water supply hose 15 can be pulled out and pulled in smoothly. In addition, by providing the corner downward extending portion 20 b , it is possible to prevent the water supply hose 15 made of resin inserted through the insertion hole 16 of the base portion 10 from coming into direct contact with the bent corner portion 24 .

On the other hand, the water discharge portion 12 of the present embodiment is a water discharge head that can be attached to and detached from the water discharge pipe portion 11, and includes a substantially tubular (substantially cylindrical) water discharge portion main body 12a and a water discharge portion main body 12a provided on the tip end side of the water discharge portion main body 12a. and a water discharge port 12b.

The water discharger main body 12a has one end connected to a switching mechanism (switching unit) 26 and a water supply hose 15 inserted therein.

1 and 3, the other end of the water supply hose 15 is connected to the connection hose 9 via a connection member 27. As shown in FIGS. A stopper/weight member 28 is detachably attached at a predetermined position to the water supply hose 15. The stopper/weight member 28 has a function of regulating the amount of withdrawal and a function of a weight for smooth withdrawal.

The water discharging portion 12 has a fitting recess inside the rear end side of the water discharging portion main body 12a, and the tip end side of the holding member 11d attached to the straight portion 11c of the water discharging pipe portion 11 is fitted into the fitting recess. , are detachably held with respect to the discharge pipe portion 11 . The water discharge portion main body 12a is formed so that its axis is coaxial with the axis O4 of the straight portion 11c of the water discharge pipe portion 11 when it is attached to and held by the water discharge pipe portion 11 .

The water discharge port 12b is formed by attaching a switching mechanism 26 having an operation knob (lever) 25 for switching the water discharge state, such as straight and shower, to the tip side of the water discharge portion main body 12a.

Further, in the switching mechanism 26, in a state in which the water discharge portion 12 is attached to the tip of the water discharge pipe portion 11, the water discharge axis (discharge direction) O5 discharged from the water discharge port 12b is aligned with the axis O4 of the water discharge portion main body 12a. It is provided so as to gradually incline downward toward the front. Thus, hot water is discharged to a suitable position of the bowl portion 3 of the washbasin 2 when water is discharged with the water discharge portion 12 attached to the tip of the water discharge pipe portion 11 .

In this embodiment, the water discharge port 12b and the switching mechanism 26 are provided so that the water discharge axis O5 faces downward, so that the lower end of the switching mechanism 26 is arranged below the lower end of the water discharging portion main body 12a and the switching mechanism 26 The upper end and the operation knob 25 are arranged below the upper end of the water discharger main body 12a.

In the water discharging device B2 and the washbasin A of the present embodiment having the above configurations, the gooseneck-shaped water discharging device B2 including the rising portion 11a and the upwardly convex arc-shaped curved portion 11b is mounted on the rear wall of the washbasin 2. By fixing and attaching the pedestal part 10 to the front wall (wall surface, mounting surface facing the lateral direction) 4a of the part 4, a large water discharge space is secured as compared with the conventional water discharge device extending forward from the wall surface. and can greatly improve usability.

In addition, by providing the water discharge pipe portion 11 rotatably about the axes O2 and O3 extending in the vertical direction with respect to the base portion 10, the water discharge direction can be freely adjusted, and usability can be further improved. .

Furthermore, by using the gooseneck-shaped water discharge pipe portion 11, the rising portion 11a can be shortened, and the water discharger B2 can be made compact. As a result, for example, even when a mirror cabinet (upper storage cabinet) is provided above the washbasin 2, the water discharge device B2 can be installed so that the rotating water discharge pipe portion 11 does not interfere with the mirror cabinet. become.

In the water discharge device B2 and the washbasin A of the present embodiment, by using a resin hose that is lightweight and excellent in flexibility as the water supply hose 15, the operation when attaching and detaching the water discharge part 12 and pulling it in and out is performed. It is possible to improve performance and further improve usability.

In the water discharge device B2 and the washbasin A of the present embodiment, the pedestal portion 10 includes the axis line O1 of the insertion hole 16 of the fixing portion 10a for fixing and attaching to the wall surface, and the vertically extending gooseneck-shaped water discharge pipe portion. 11 is formed so as to intersect the axis O2 of the insertion hole 16 at an obtuse angle, the water supply hose 15 inserted into the insertion hole 16 can be pulled out and pulled in smoothly. becomes possible. In particular, even when the water supply hose 15, which is made of resin and is lightweight and excellent in flexibility, is used, it is possible to pull out and pull in the water supply hose 15 (attachment and detachment operation of the water discharger 12) smoothly and appropriately.

In the water discharging device B2 and the washbasin A of the present embodiment, by connecting the water discharging pipe portion 11 to the base portion 10 via the joint member 20, the water discharging pipe portion 11 preferably extends vertically and the axes O2 and O3 are aligned. It can be provided to be rotatable around.

At this time, the outer surface of the joint member 20 is provided with a plurality of annular water-stopping material holding grooves that are recessed radially inward and are connected in the circumferential direction. By attaching the water discharge pipe portion 11 and the pedestal portion 10, it is possible to suitably secure the water stopping performance of the connection portion, and furthermore, there is no rattling, and the desired sliding friction force (rotational operation force) is generated. The water discharge pipe portion 11 can be preferably provided so as to be rotatable.

Further, since the front side of the lower end of the joint member 20 extends downward from the rear side and is formed with the extended fitting portion 20a, the extended fitting portion 20a is connected to the connecting portion 10b of the base portion 10. The joint member 20 can be fitted into the pedestal portion 10 by making the joint member 20 enter the base portion 10 greatly. As a result, even when the water discharge pipe portion 11 is configured to be rotatable, the joint member 20 as well as the connection portion between the water discharge pipe portion 11 and the pedestal portion 10 can sufficiently secure the proof stress.

Furthermore, the joint member 20 extends downward from the inwardly convex bent corner portion 24 formed at the upper portion connecting the fixing portion 10a and the connecting portion 10b on the inner surface of the base portion 10 at the lower end side of the rear side of the joint member 20. By providing the corner downward extending portion 20b, the water supply hose 15 can be pulled out and pulled in smoothly. In addition, by providing the corner downward extending portion 20 b , it is possible to prevent the water supply hose 15 made of resin inserted through the insertion hole 16 of the base portion 10 from coming into direct contact with the bent corner portion 24 .

Therefore, according to the water discharging device B2 and the washstand A of the present embodiment, the water discharging device B2 and the washstand A can secure a larger water discharge space than the conventional one, and can greatly improve usability. can be realized.

Although one embodiment of the water discharging device and the washbasin according to the present invention has been described above, the present invention is not limited to the above one embodiment, and can be changed as appropriate without departing from the gist thereof.

For example, in the present embodiment, the water discharging portion 12 is detachably provided at the tip of the water discharging pipe portion 11. It may be configured integrally with the tip.

In addition, the water discharger according to the present invention does not use the water supply hose 15, and hot water is caused to flow through the insertion holes (water passage holes) 16 of the pedestal portion 10, the water discharge pipe portion 11, and the water discharge portion 12, and is discharged from the water discharge port 12b. may be configured to Furthermore, the water supply hose 15 does not necessarily have to be a resin hose.

Further, in the present embodiment, the mounting surface 4a for mounting the water discharging device B2 is an inclined surface. degree range), and may be a vertical surface or an inclined surface.

Furthermore, the application of the water discharging device according to the present invention need not be limited to washbasins.

1 lower storage cabinet 2 washbasin 3 bowl 4 rear wall (wall)
4a front wall (front wall surface, laterally facing mounting surface)
5 faucet body 6 handle 7 water inlet pipe 8 hot water pipe 10 pedestal (base)
10a Fixed portion 10b Connecting portion 11 Water discharge pipe portion 11a Rising portion 11b Curved portion 11c Straight portion 11d Holding member 12 Water discharge portion 12a Water discharge portion main body 12b Water discharge port 15 Water supply hose (resin hose)
16 insertion hole (internal water passage hole)
17 Through hole 18 Hose guide 19 Drain hole 20 Joint member 20a Extension fitting portion 20b Corner downward extension portion 21 Stop ring 22 Water stop member 24 Bent corner portion 25 Operation knob 26 Switching mechanism (switching unit)
27 Connecting member 28 Stopper/weight member 29 Screw A Washbasin B Mixing faucet system B1 Faucet device B2 Discharge device O1 Axis 02 Axis 03 Axis 04 Axis 05 Discharge axis (discharge direction)

Claims (4)

a pedestal fixed to a laterally facing mounting surface;
a tubular water discharge pipe portion extending with its rear end connected to the pedestal;
A water discharging device having a water discharging port and including a water discharging portion provided integrally or detachably on the distal end side of the water discharging pipe portion,
The water discharge pipe portion has a rising portion that connects the lower end of the rear end to the pedestal portion and extends upward, and a curved portion that connects the rear end to the upper end of the rising portion and is formed in an upwardly convex arc shape. is integrally formed and connected to the pedestal so as to be rotatable around an axis extending in the vertical direction,
The lower end portion of a tubular joint member is fitted into the water passage hole of the pedestal portion and fixed to the pedestal portion, and the portion projecting upward from the upper end of the pedestal portion of the joint member is the discharge port. The water discharge pipe portion is rotatably connected to the pedestal portion via the joint member by inserting and fitting it into the water passage hole of the water pipe portion,
The joint member is formed on the front side of the water discharge port side of the lower end with an extension fitting portion that extends downward from the rear side of the mounting surface side and is fitted to the pedestal portion. Water discharge device. The pedestal includes a fixing portion for fixing to the mounting surface and a connection portion for connecting the rising portion of the discharge pipe portion,
2. The fixing part and the connecting part are integrally formed so that the axis of the inner water passage hole of the fixing part and the axis of the inner water passage hole of the connecting part intersect at an obtuse angle. Water discharge device as described. 3. A water supply hose is provided which is inserted into the inner water passage holes of the base portion and the water discharge pipe portion and connected to the water discharge portion, and the water supply hose is a resin hose. Discharging device as described in 1. a bowl portion capable of receiving water;
a wall portion provided behind the bowl portion and protruding upward;
A washbasin to which the water discharging device according to any one of claims 1 to 3 is fixed, wherein the wall portion is used as the mounting surface.

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