JP7628812B2 - Free-standing mounting base - Google Patents

Description

The present invention relates to a free-standing mounting base on which a fire detector or other detector can be mounted, and in particular, to a free-standing mounting base for mounting the detector in any direction from a ceiling or wall surface.

As an example of a free-standing mounting base for mounting a detector such as a fire detector in any direction from the installation surface, the free-standing mounting base described in Patent Document 1 is known. The free-standing mounting base described in Patent Document 1 has a base fixed to the ceiling, which is the installation surface, and the tip of a support part attached to the base is provided with a mounting part on which the fire detector can be installed.

Figure 12 shows such a free-standing mounting base in use with a detector attached, with Figure 12(A) being a view from the monitoring direction of the detector, and Figure 12(B) being a view from the left of Figure 12(A). Here, the free-standing mounting base 110 has a base 120 connected to a support section 130, which is fixed to an installation surface 100, and a mounting section 140 to which a fire detector 150 is attached is connected to the tip of the support section 130. Also, the angle of the mounting section 140 is variable around the axis A of the support section 130 and in the vertical direction B, allowing the fire detector 150 to be oriented in any direction.

JP 2019-016132 A

However, in such a swivel mount, as shown in FIG. 13(A), which is a partial cross-sectional view of the swivel mount shown in FIG. 12, the support 130 is inserted from above into the base opening 122 in the center of the base 120, and the flange 132 at the end (one end) of the support 130 is locked with a pair of locking members 124, so that the connection between the base 120 and the support 130 has some play at least within the tolerance range due to the fitting tolerance and engagement accuracy, and this play tends to increase with age.

Due to this structure, as shown in FIG. 14, if the angle θ between the monitoring direction of the fire detector 150 and the vertical direction is set large, or if the weight of the fire detector 150 attached to the tip (other end) of the support section 130 is large, the moment M acting on the end of the support section 130 becomes large, causing the connection angle of the support section 130 to the base section 120 to shift, and the orientation of the fire detector 150 to shift (tilt).

For example, if the fire detector 150 is a spot detector and the facility in which it is installed is a large space with a high ceiling, such as an atrium in a commercial facility or an entrance hall in a building, the spot detector may be installed at a height of H = 30 m from the floor surface that is the monitoring position. If the spot detector is installed as shown in Figure 14 (θ ≒ 45°) and the angle θ is tilted from the installation standard by, for example, Δθ = 1°, the monitoring position will shift by approximately T = 1 m.

As shown in FIG. 13B, a pair of locking members (claw members) 124 are provided on the outside of the base opening 122 to engage with the flange 132 at the end of the support 130 to maintain the connection of the support 130 (to prevent it from coming loose). However, due to moment M acting on the flange 132 of the support 130, the load in the direction of releasing the lock is concentrated on one side of the locking members 124 (the left side in the figure), so there is a risk that the locking members 124 may become deformed or damaged due to aging, etc. Furthermore, even if the locking members 124 are deformed or damaged, it is difficult to detect the deformation or damage from the appearance of the swivel mount 110.

The present invention proposes a solution to these problems with adjustable mounting bases, and aims to provide an adjustable mounting base that prevents the connection of the support part to the base from becoming dislocated even when a large moment acts on the end of the support part, and that can prevent the concentration of load on one of the locking members.

[ Free-standing mount 1 ]
The present invention provides a universal mount, comprising:
A base that is fixed to an installation surface;
a support portion connected to an opening of the base with one end side exposed on the installation surface side of the base;
a sensor mounting portion connected to the other end side of the support portion;
a spacer arranged such that, when the base is fixed to the installation surface, a portion of one end of the spacer contacts the installation surface, and another portion of the one end of the spacer is deformed by pressure from the installation surface and contacts the installation surface, and the other end of the spacer contacts one end surface of the support;
The present invention is characterized by comprising:

[ Free-standing mounting base 2 ]
The present invention also provides a universal mounting base, comprising:
A base that is fixed to an installation surface;
a support portion connected to an opening of the base with one end side exposed on the installation surface side of the base;
a sensor mounting portion connected to the other end side of the support portion;
a spacer disposed in contact with both sides of the installation surface and one end surface of the support column when the base is fixed to the installation surface;
Equipped with
the base portion includes a base engaging portion that defines a position where the spacer is disposed;
The spacer includes a spacer engagement portion that engages with the base engagement portion.

[First and third embodiments (structures with multiple spacers)]
The base includes a plurality of base engagement portions;
The spacers are provided in the same number as the plurality of base engaging portions,
The spacers engage with the base engagement portions, respectively.

[Second and fourth embodiments (structures having multiple spacer engagement portions)]
the base portion includes a plurality of base portion engaging portions at positions facing each other across the connected support portion;
The spacer includes a plurality of spacer engagement portions,
The spacer engagement portions are engaged with the corresponding base engagement portions, respectively.

[Installation surface side flat section, support side flat section or support side straight section and connection flat section]
The spacer is
an installation surface side flat surface portion that comes into contact with the installation surface when the spacer engagement portion engages with the corresponding base engagement portion and the base is fixed to the installation surface;
a support portion-side flat portion or a support portion-side straight portion that comes into contact with one end surface of the support portion when the spacer engagement portion is engaged with the corresponding base engagement portion;
A connecting flat portion that is connected to the installation surface side flat portion and is connected to the support portion side flat portion or the support portion side straight portion;
Equipped with.

[Flat or straight part in contact with the installation surface]
The spacer has an upper flat portion or an upper straight portion that comes into contact with the installation surface when the spacer engagement portion engages with the corresponding base engagement portion and the base is fixed to the installation surface.

[Flat or straight portion in contact with one end face]
The spacer has a lower flat portion or a lower straight portion that comes into contact with one end face of the support post when the spacer engaging portion is engaged with the corresponding base engaging portion.

[Spacer engagement portion]
The spacer engaging portion is elastically deformable, and when engaged with the base engaging portion, a force acts in a direction pressing the base engaging portion.

[Arrangement of base engagement portion]
At least one opposing pair of the base engaging portions are disposed at positions for fixing the base to the installation surface.

[Basic effects]
The present invention is a flexible mounting base that includes a base to be fixed to an installation surface, a support portion connected to an opening of the base with one end exposed on the installation surface side of the base, and a detector mounting portion connected to the other end side of the support portion, and with the base fixed to the installation surface, a spacer is arranged so as to contact both the installation surface and one end face of the support portion, so that the installation surface is directly subjected to a force acting to shift the connection angle of the support portion to the base due to a moment acting on the end of the support portion.As a result, even if the angle with the sensor mounting portion in the vertical direction becomes large or the weight of the fire sensor attached to the sensor mounting portion is heavy, the connection angle of the support portion to the base will not shift, and the target location can be monitored by the fire sensor, and further, load is not concentrated on the locking member, preventing the locking member from being deformed or damaged.

[Effects of the structure having the spacer engagement portion and the base engagement portion]
The spacer is positioned by engaging the spacer engagement portion with the base engagement portion of the base, so that after the support portion and the base are connected, the spacer can be fitted (engaged) into the base engagement portion, making it easier to position the spacer during installation.

[Effects of a structure having multiple spacers]
The base includes a plurality of base engaging portions, and the spacers are engaged with the plurality of base engaging portions, respectively, thereby allowing the spacer to have a simple structure.

[Effects of a structure having a plurality of spacer engagement portions]
The base has a plurality of base engaging portions at opposing positions across the connected support portion, and the spacer has a plurality of spacer engaging portions. By engaging the plurality of spacer engaging portions with corresponding plurality of base engaging portions, the number of spacers used can be reduced.

[Effects of the installation surface side flat section, the support column side flat section or the support column side straight section and the connection flat section]
The spacer is equipped with an installation surface side flat portion that contacts the installation surface when the spacer engaging portion engages with the corresponding base engaging portion and the base is fixed to the installation surface, a support portion side flat portion or a support portion side straight portion that contacts one end face of the support portion when the spacer engaging portion engages with the corresponding base engaging portion, and a connecting flat portion that is connected to the installation surface side flat portion and also connects to the support portion side flat portion or the support portion side straight portion.When a user attaches or removes the spacer from the base, the user's fingers will come into contact with the installation surface side flat portion and/or the connecting flat portion, which will not be sharp compared to when either is composed of a straight portion, making it possible to perform the work safely and easily.

[Effect of the structure in which the spacer contacts one end surface of the support part and the installation surface]
The spacer has an upper flat portion or lower straight portion that contacts the installation surface and a lower flat portion or lower straight portion that contacts one end face of the support portion when the spacer engaging portion engages with the base engaging portion and the base is fixed to the installation surface.This allows the support portion to be firmly fixed to the installation surface and prevents the monitoring direction of the fire detector from shifting.

[Effect of the structure in which the spacer engagement portion is elastically deformed]
The spacer engagement portion is elastically deformable, and when engaged with the base engagement portion, a force acts in a direction pressing the base engagement portion, making it possible to prevent the spacer from falling or coming loose during installation work.

[Effect of Arrangement of Base Engagement Part]
At least one opposing pair of the multiple base engagement portions are positioned at a position to fix the base to the installation surface, thereby preventing the base from tilting or floating relative to the installation surface when the base is fixed to the installation surface.

FIG. 1 is an explanatory diagram showing the appearance of a free-standing mounting base according to the present invention; An explanatory diagram of the support part connected to the base, viewed from diagonally above An explanatory diagram showing a cross section of the support part connected to the base part. FIG. 1 is an explanatory diagram showing a first embodiment of a swivel mount according to the present invention; FIG. 5 is an explanatory diagram showing the spacer shown in FIG. 4 as seen obliquely from above. FIG. 11 is an explanatory diagram showing a second embodiment of the swivel mount according to the present invention; FIG. 7 is an explanatory diagram of the spacer shown in FIG. 6 as seen obliquely from above. FIG. 11 is an explanatory diagram showing a third embodiment of the swivel mount according to the present invention; FIG. 9 is an explanatory diagram showing the spacer shown in FIG. 8 as viewed obliquely from above. FIG. 11 is an explanatory diagram showing a fourth embodiment of the swivel mount according to the present invention; FIG. 11 is an explanatory diagram showing the spacer shown in FIG. 10 as viewed obliquely from above. An explanatory diagram showing the free-standing mounting base in use FIG. 13 is an explanatory diagram showing a cross section of the swivel mount shown in FIG. FIG. 13 is an explanatory diagram showing the problem of the free-standing mount shown in FIG.

[Basic configuration]
The basic structure of the universal mounting base, which is the premise of the present invention, will be described below with reference to Figures 1 to 3. Figure 1 shows the appearance of the universal mounting base according to the present invention, and corresponds to the state in which a fire detector 150 is not attached to the universal mounting base shown in Figure 12. Figure 1(A) shows the state in which the detector mounting portion 40 (mounting surface 42) faces downward, and Figure 1(B) shows the state in which the detector mounting portion 40 (mounting surface 42) faces horizontally. Figure 2 shows the state in which the support portion is connected to the base shown in Figure 1, viewed from diagonally above, and shows the state in which the detector mounting portion 40 is not attached, and Figure 3 shows a cross section of the state shown in Figure 2.

As shown in Figures 1 to 3, the adjustable mounting base 10 is composed of a circular base 20 that is fixed to an installation surface (corresponding to the installation surface 100 in Figure 12), a support column 30 whose one end is connected to the base 20, and a detector mounting section 40 that is connected to the other end of the support column 30 and to which a fire detector 150 (see Figure 12) is attached.

The base 10 has a circular base opening 22 formed in the center of the annular shape, a pair of locking members 24 and a base mounting portion 26 at opposing positions across the base opening 22, and a number of rib members 28 that support the outer periphery 20A and bottom 20B of the base 10. A support portion 30 is inserted into the base opening 22 from above (the installation surface side), and the support portion 30 protrudes downward from the base 10 and is connected without falling off when the flange portion 32 abuts against the peripheral edge portion 22A of the base opening 22. The locking member 24 locks the flange portion 32 of the inserted support portion 30 to prevent it from coming loose, and the base mounting portion 26 forms a screw hole for fixing the base 10 to the installation surface 100.

The support post 30 is inserted into the base opening 22 from above the base 10 and is connected so as to protrude vertically downward from the installation surface, and can be fixed in any orientation around the vertical axis to the base 10. A pair of connecting parts 44 of the detector mounting part 40 are connected by bolts 50 to mounting holes 34 provided at the lower end (other end) of the support post 30, allowing it to be fixed at any angle. The fire detector 150 is attached to the mounting surface 42 of the detector mounting part 40.

In addition, when inserted, the support section 30 can rotate around a vertical axis and is fixed at a specified angle (fixing mechanism not shown). However, because the locking member 24 locks the flange section 32, the support section 30 is prevented from moving upwards when the angle is adjusted.

[First embodiment]
Next, a first embodiment of the swivel mount according to the present invention will be described with reference to Figures 4 and 5. Figure 4(A) shows the state in which the spacer is attached to the base (shown in phantom lines) from the installation surface side, and Figure 4(B) shows it from the side. Also, Figure 5 shows the state in which the spacer of the first embodiment is not attached to the base, as seen from diagonally above.

As shown in Figures 4 and 5, the spacer 60 of the first embodiment is formed of an elastic plate material such as stainless steel, and is assembled in pairs so as to surround each of the base mounting parts 26 of the base 20 into which the support parts 30 are inserted. When assembled to the base mounting parts 26, the spacer 60 is composed of a first surface 62 on the support part 30 side, a pair of second surfaces 64 bent at approximately a right angle to the first surface 62, a pair of third surfaces 66 bent further from both second surfaces 64, and a pair of spring pieces 68 provided on the installation surface side of both second surfaces 64.

When the spacer 60 is attached to the base mounting portion 26, the second surface 64 and the third surface 66 press against the base mounting portion 26 to hold it in place, preventing it from falling or coming off during installation. When the base 20 is fixed to the installation surface, the upper edge 62A of the first surface 62 of the spacer 60 contacts the installation surface, and the lower edge 62B of the first surface 62 contacts the upper surface 32A of the flange portion 32 of the support portion 30, so that the first surface 62 is sandwiched vertically between the installation surface and the upper surface 32A of the flange portion 32, thereby firmly fixing the support portion 30 to the installation surface.

When the base 20 is fixed to the installation surface by a screw inserted into the screw hole of the base mounting portion 26, the spring piece 68 of the spacer 60 is elastically pressed against the installation surface and deformed, thereby acting to maintain the spacer 60 in the desired position and posture, but is not essential and may be omitted. In addition, the upper edge 64A and lower edge 64B of the second surface 64 are formed to have dimensions that do not prevent the first surface 62 from being sandwiched between the installation surface and the upper surface 32A of the flange portion 32.

In this embodiment, the "upper surface 32A of the flange portion 32 of the support portion 30," the "base mounting portion 26 of the base portion 20," the "second surface 64 and the third surface 66 of the spacer 60," the "upper edge 62A of the spacer 60," and the "lower edge 62B of the spacer 60" correspond to the "one end surface of the support portion," the "base engaging portion," the "spacer engaging portion," the "upper straight portion," and the "lower straight portion" described in the claims, respectively.

[Second embodiment]
Next, a second embodiment of the swivel mount according to the present invention will be described with reference to Figures 6 and 7. Figure 6(A) shows the spacer assembled to the base (shown in phantom lines) from the installation surface side, and Figure 6(B) shows it from the side. Also, Figure 7 shows the spacer of the second embodiment not assembled to the base as viewed from diagonally above.

6 and 7, the spacer 70 of the second embodiment is formed of an elastic plate material such as stainless steel, and is assembled on the flange 32 of the support 30 so as to sandwich both base mounting parts 26 of the base 20 into which the support 30 is inserted from the sides. When assembled to the base mounting parts 26, the spacer 70 is composed of a first surface 72 on the installation surface side, a pair of second surfaces 74 bent at approximately right angles to the first surface 72, two pairs of third surfaces 76 bent further from both second surfaces 74, and guide pieces 78 provided on the underside of the third surfaces 76 at four locations.

When the spacer 70 is attached to the base mounting portion 26, each of the third surfaces 76 elastically deforms and presses the base mounting portion 26 from the side, thereby holding the spacer 70 in place and preventing it from falling or falling off during installation. When the base 20 is fixed to the installation surface, the upper surface 72A of the first surface 72 of the spacer 70 contacts the installation surface, and the lower edge 74B of the second surface 74 contacts the upper surface 32A of the flange portion 32 of the support portion 30, so that the first surface 72 and the second surface 74 are sandwiched vertically between the installation surface and the flange portion 32, thereby firmly fixing the support portion 30 to the installation surface.

The guide piece 78 of the spacer 70 functions as a guide for the insertion position of the third surface 76 when the spacer 70 is attached to the base mounting portion 26. In addition, the upper edge 76A of the third surface 76 and the lower edge 78B of the guide piece 78 are formed to have dimensions that do not prevent the first surface 72 and the second surface 74 from being sandwiched between the installation surface and the flange portion 32.

In this embodiment, the "upper surface 32A of the flange portion 32 of the support portion 30," the "base mounting portion 26 of the base portion 20," the "third surface 76 of the spacer 70," the "upper surface 72A of the spacer 70," and the "lower side 74B of the spacer 70" correspond to the "one end surface of the support portion," the "base engaging portion," the "spacer engaging portion," the "upper flat surface portion," and the "lower straight portion" described in the claims, respectively.

[Third embodiment]
Next, a third embodiment of the swivel mount according to the present invention will be described with reference to Figures 8 and 9. Figure 8(A) shows the state in which the spacer is attached to the base (shown in imaginary lines) from the installation surface side, and Figure 8(B) shows it from the side. Also, Figure 6 shows the state in which the spacer of the third embodiment is not attached to the base, as seen from diagonally above.

As shown in Figures 8 and 9, the spacers 80 of the third embodiment are made of a plastic material having elasticity, such as polyacetal, and are assembled in pairs onto the flanges 32 of the support parts 30 so as to surround each of the base mounting parts 26 of the base 20 into which the support parts 30 are inserted. Before being assembled to the base mounting parts 26, the spacers 80 are C-shaped (cylindrical with an open portion on the outer periphery of the base mounting parts 26), but when assembled to the base mounting parts 26, they become flattened C-shaped.

When the spacer 80 is assembled to the base mounting portion 26, the upper and lower sides of the C-shape are pressed so as to be sandwiched between the respective side surfaces of the rib members 28 located on both sides of the base mounting portion 26, thereby preventing the spacer 80 from dropping or falling off during installation. When the base 20 is fixed to the installation surface, the upper surface 80A of the spacer 80 comes into contact with the installation surface, and the lower surface 80B comes into contact with the upper surface 32A of the flange portion 32 of the support portion 30, so that the spacer 80 is sandwiched vertically between the installation surface and the flange portion 32, thereby firmly fixing the support portion 30 to the installation surface.

In this embodiment, the following elements are defined: "upper surface 32A of flange 32 of support 30", "base attachment portion 26 of base 20 and rib members 28 located on both sides of base attachment portion 26", "spacer 80", "upper surface 80A of spacer 80", and "lower surface 80B of spacer 80".
" correspond to "one end surface of the support portion,""base engaging portion,""spacer engaging portion,""upper flat portion," and "lower flat portion" respectively described in the claims.

[Fourth embodiment]
Next, a second embodiment of the swivel mount according to the present invention will be described with reference to Figures 10 and 11. Figure 10(A) shows the state in which the spacer is attached to the base (shown in imaginary lines) from the installation surface side, and Figure 10(B) shows it from the side. Also, Figure 11 shows the state in which the spacer of the fourth embodiment is not attached to the base, as seen from diagonally above.

As shown in Figures 10 and 11, the spacer 90 of the fourth embodiment is made of a plastic material having elasticity, such as polyacetal, and is assembled onto the flange 32 of the support 30 so as to be surrounded by the inner peripheral surfaces of the base mounting portion 26 and the rib member 28 of the base 20 into which the support 30 is inserted. The spacer 90 is C-shaped (cylindrical with an open portion overlapping with the locking member 24 and a recess 90C on the opposite side) when assembled to the base mounting portion 26, but has a more open C-shape before being assembled to the base mounting portion 26.

When the spacer 90 is assembled to the base mounting portion 26, the upper and lower sides of the C-shape are pressed so as to be sandwiched between the inner periphery of the rib members 28 that are positioned to surround the flange 32, thereby preventing the spacer from falling or falling off during installation. When the base 20 is fixed to the installation surface, the upper surface 90A of the spacer 90 comes into contact with the installation surface, and the lower surface 90B comes into contact with the upper surface 32A of the flange 32 of the support portion 30, so that the spacer 90 is sandwiched between the installation surface and the flange 32 in the vertical direction, thereby firmly fixing the support portion 30 to the installation surface.

The recess 90C of the spacer 90 is formed to avoid the locking member 24 when assembled, but is not required if the locking member 24 is omitted (in the first to fourth embodiments, a spacer is used, so the locking member 24 is not essential).

In this embodiment, the "upper surface 32A of the flange 32," the "rib member 28 of the base 20," the "spacer 90," the "upper surface 90A of the spacer 90," and the "lower surface 90B of the spacer 90" correspond to the "one end surface of the support," the "base engagement portion," the "spacer engagement portion," the "upper straight portion," and the "lower straight portion" described in the claims, respectively.

(others)
The present invention is not limited to the above-described embodiment, but includes appropriate modifications that do not impair the objects and advantages of the present invention, and is not limited by the numerical values shown in the above-described embodiment.

10: Freely adjustable mounting base 20, 120: Base 22: Base opening 24: Locking member 26: Base mounting portion 28: Rib member 30: Support portion 32: Flange portion 34: Mounting hole 40: Sensor mounting portion 42: Mounting surface 44: Connection portion 50: Bolts 60, 70, 80, 90: Spacers 62, 72: First surface 64, 74: Second surface 66, 76: Third surface 68: Spring piece 78: Guide piece 100: Installation surface

Claims (9)

A base that is fixed to an installation surface;
A support portion connected to an opening of the base with one end side exposed on the installation surface side of the base;
a sensor mounting portion connected to the other end side of the support portion;
a spacer arranged such that, when the base is fixed to the installation surface, a portion of one end side of the spacer contacts the installation surface, and another portion of the one end side of the spacer is deformed by pressure from the installation surface and contacts the installation surface, and the other end side of the spacer contacts one end surface of the support portion;
A freely movable mounting base comprising:
A base that is fixed to an installation surface;
A support portion connected to an opening of the base with one end side exposed on the installation surface side of the base;
a sensor mounting portion connected to the other end side of the support portion;
a spacer disposed in contact with both sides of the installation surface and one end surface of the support column when the base portion is fixed to the installation surface;
Equipped with
the base portion includes a base engaging portion that defines a position at which the spacer is disposed,
The spacer has a spacer engaging portion that engages with the base engaging portion.
In the swivel mount according to claim 2,
The base includes a plurality of the base engagement portions,
The spacers are provided in the same number as the plurality of base engaging portions,
The plurality of spacers are adapted to engage with the plurality of base engaging portions, respectively.
In the swivel mount according to claim 2,
the base portion includes a plurality of base portion engaging portions at positions facing each other across the connected support portion,
The spacer includes a plurality of the spacer engagement portions,
A swivel mount, characterized in that the plurality of spacer engagement portions are engaged with corresponding ones of the plurality of base engagement portions.
In the swivel mount according to claim 4,
The spacer is
an installation surface side flat surface portion that comes into contact with the installation surface when the spacer engagement portion engages with the corresponding base engagement portion and the base is fixed to the installation surface;
a support portion-side flat portion or a support portion-side straight portion that comes into contact with one end surface of the support portion when the spacer engagement portion is engaged with the corresponding base engagement portion;
A connecting flat portion that is connected to the installation surface side flat portion and is connected to the support portion side flat portion or the support portion side straight portion;
A freely movable mounting base comprising:
In the swivel mount according to claim 3 or 4,
The spacer is characterized in that the spacer engaging portion engages with the corresponding base engaging portion and has an upper flat portion or an upper straight portion that contacts the installation surface when the base is fixed to the installation surface.
In the swivel mount according to claim 3 or 4,
The spacer is characterized in that it has a lower flat portion or a lower straight portion that contacts one end face of the support portion when the spacer engagement portion is engaged with the corresponding base engagement portion.
In the swivel mount according to any one of claims 5 to 7,
The movable mounting base is characterized in that the spacer engagement portion is elastically deformable, and when engaged with the base engagement portion, a force acts in a direction pressing the base engagement portion.
In the swivel mount according to claim 3 or 4,
The swivel mount is characterized in that at least one opposing pair of the plurality of base engagement portions is arranged at a position for fixing the base to the installation surface.

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