Concealed sprinkler head cover adjusting device

Abstract

A concealed sprinkler head cover adjusting device includes a valve body formed with a flow channel therein. Both sides of the valve body are formed with an opposing bar along the axial direction of the flow channel. A shell is clamped on the opposing bars and is formed with a first accommodating space. A bottom cover is fixed to the bottom of the shell and is inwardly concaved formed a second accommodating space. A restriction site is formed on the outer wall of the opposing bars along the axial direction of the flow channel, both sides of the shell are symmetrically formed with a guiding part and a plurality of clamping parts, and the guiding parts guide the opposing bars to allow the clamping parts adjust the clamping position on the restriction site, thereby adjusting the position of the valve body in the first and second accommodating spaces.

Claims

1. A concealed sprinkler head cover adjusting device, comprising: a valve body formed with a flow channel therein, the flow channel being formed with a valve opening at a surface of the valve body, a water valve and a heat-activated glass bulb against the water valve being blocked at the valve opening, two opposite sides of the valve body symmetrically being formed with two opposing bars respectively along an axial direction of the flow channel, the two opposing bars being used for holding the heat-activated glass bulb, a bottom of each of the two opposing bars being inserted with a conduct pillar, and a spoiler being connected to the two conduct pillars; a shell formed as enclosed-circle shape and being clamped on the two opposing bars and being disposed around an outer periphery of the heat-activated glass bulb, a first accommodating space being formed inside the shell; a bottom cover formed as cup shape and being fixed to a bottom of the shell, the bottom cover being inwardly concaved to form a second accommodating space communicating the first accommodating space; wherein an outer wall of each of the two opposing bars is formed with a restriction site along the axial direction of the flow channel, each of two opposite sides of the shell is symmetrically concaved to form a concave part consisting of a guiding part and a plurality of clamping parts along the axial direction of the flow channel, each of the two opposing bars clamps the shell via the guiding part to allow adjusting positions of the shell along the axial direction of the flow channel, wherein cross sections of each of the two opposing bars and each of the two concave parts are substantially formed in rectangle shape and fitted with each other, and the guiding part is substantially perpendicular to the plurality of clamping parts, and wherein the plurality of clamping parts have a plurality of clamping positions, and the plurality of clamping positions of the plurality of clamping parts on the restriction site are adjustable, so that positions of the valve body, the two conduct pillars, and the spoiler positioned in the first accommodating space and the second accommodating space are adjusted accordingly.

2. The concealed sprinkler head cover adjusting device according to claim 1, wherein the first accommodating space and the second accommodating space are respectively formed along the axial direction of the flow channel.

3. The concealed sprinkler head cover adjusting device according to claim 1, wherein the restriction site is a plurality of V-shaped grooves arranged at interval, the clamping parts are elastic hooks being able to adjust high/low clamping positions on the plurality of V-shaped grooves.

4. The concealed sprinkler head cover adjusting device according to claim 1, wherein the restriction site is a plurality of bead grooves arranged at interval, the clamping parts are elastic beads being able to adjust high/low clamping positions on the bead grooves.

5. The concealed sprinkler head cover adjusting device according to claim 1, wherein the bottom cover is adhered to a bottom of the shell by a low melting point metal.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) These and other features and advantages of the various embodiments disclosed herein will be better understood with respect to the following description and drawings, in which like numbers refer to like parts throughout, and in which:

(2) FIG. 1 is an assembling longitudinal sectional view of a traditional sprinkler head and head cover of a preferred embodiment in the present invention;

(3) FIG. 2 is another assembling longitudinal sectional view of a traditional sprinkler head and head cover of a preferred embodiment in the present invention;

(4) FIG. 3 is a perspective schematic view of a preferred embodiment of a concealed sprinkler head cover adjusting device according to the present invention;

(5) FIG. 4 is a sectional view of FIG. 3;

(6) FIG. 5 is a partially magnified view of the clamping part and the restriction site in the first preferred embodiment of FIG. 4;

(7) FIG. 6 is a partially magnified view of the clamping part and the restriction site in the second preferred embodiment of FIG. 4; and

(8) FIG. 7 is a sectional view of the concealed sprinkler head cover adjusting device of another preferred embodiment of the present invention.

DETAILED DESCRIPTION

(9) Refer to FIGS. 3 and 4, the concealed sprinkler head cover adjusting device includes a valve body 10b, a shell 20b, and bottom cover 30b.

(10) The valve body 10b in formed with a screwing part 17 on the top thereof. The valve body 10b can be connected to a fire water supply 40b via the screwing part 17, and is exposed to the living area via a through hole 51 of the ceiling 50b. A flow channel 18 is formed inside the valve body 10b, and both ends of the flow channel 18 are respectively formed a water inlet 181 and a valve opening 182 at the surface of the valve body 10b. The flow channel 18 communicates with the fire water supply 40b via the water inlet 181 to allow the water in the fire water supply 40b flowing into the flow channel 18 from the water inlet 181 and flowing out of the flow channel 18 through the valve opening 182. The valve opening 182 is blocked by a water valve 11. The water valve 11 can control the timing of supplying water from the fire water supply 40b. A heat-activated glass bulb 12 is disposed at the bottom of the water valve 11. The heat-activated glass bulb 12 is against the water valve 11 to close the valve opening 182 in normal condition, which can prevent the water in the fire water supply 40b from coming out. Both sides of the valve body 10b are symmetrically formed with an opposing bar 13 along the axial direction of the flow channel 18. The opposing bars 13 are used to position the heat-activated glass bulb 12 into the valve body 10b. A bottom of the opposing bars 13 is inserted with a conduct pillar 15 which is able to slide along the axial direction of the flow channel 18. The conduct pillar 15 is connected to a plate-shaped spoiler 16 which can make the water coming out form the valve opening 182 a fan-shaped water curtain, thereby increasing the water spreading area.

(11) The shell 20b is formed as enclosed-circle shape, and a first accommodating space 26 is formed inside the shell 20b. A top of the shell 20b extends inwardly to form a ring-shaped neck 24 communicating the first accommodating space 26. The ring-shaped neck 24 is formed with assembly grooves 25 symmetrically correspond to each other. The inner diameter of the ring-shaped neck 24 is smaller than the outer diameter of the valve body 10b, and the inner diameter between the two assembly grooves 25 is larger than the outer diameter of the valve body 10b, thereby restricting the assembling method of the valve body 10b and the shell 20b. The shell 20b is guided to be clamped on the valve body 10b. The valve body 10b, the conduct pillar 15, and the spoiler 16 are thus accommodated into the first accommodating space 26. The bottom of the shell 20b expands outwardly to form a ring-shaped bonding portion 23.

(12) The shell 20b is clamped on the opposing bars 13 on both sides of the valve body 10b to position the valve body 10b into the first accommodating space 26. Specifically, both ends 20b1 of the shell 20b are respectively and symmetrically formed a guiding part 21 and a plurality of clamping parts 22. An outer wall of the opposing bars 13 is formed with a restriction site 14. The opposing bars 13 can restrict the moving direction of the shell 20b by the guiding part 21, and the position of the shell 20b can only be adjusted along the axial direction of the flow channel 18, thereby adjusting the position of the valve body 10b in the first accommodating space 26. The guiding part 21 can be a tongue integrally stamped from the shell 20b and being curved to the radical direction of the flow channel 18. The opposing bars 13 and the shell 20b can restrict the shell 20b to move along the axial direction of the flow channel 18 by the guiding part 21. The clamping part 22 can adjust the clamping position on the restriction site 14 to further adjust the position of the valve body 10b in the first accommodating space 26. The clamping part 22 can be a hook or an elastic tongue which are being able to adjust the clamping position on the restriction site 14. More specifically, the plurality of clamping parts 22 are formed on the outer wall of the shell 20b along an axial direction of the flow channel 18. The clamping area on the valve body 10b of the shell 20b can be expanded by using the plurality of clamping parts 22, and thus the shell 20b can be much closer to the surface of ceiling 50b, thereby decreasing the distance between the ceiling 50b and the shell 20b. Therefore, the noticeable distance between the ceiling 50b and the shell 20b can be minimized, and the beauty of the living area can be improved as well.

(13) The bottom cover 30b is fixed to the bottom of the shell 20b. More specifically, the bottom cover 30b is adhered to a bonding portion on the bottom of the shell 20b by a low melting point metal (such as Tin). When the high temperature caused by the fire melts the low melting point metal, the bottom cover 30b can fall down from the shell 20b, and the hot air can enter into the shell 20b to heat up and break the heat-activated glass bulb 12, thereby opening the water valve 11 to spread water.

(14) The bottom cover 30b is formed as cup shape, and the bottom cover 30b is inwardly concaved to form a second accommodating space 31. The second accommodating space 31 is fixed to the bottom of the shell 20b via the bottom cover 30b to communicate with the first accommodating space 26. The first accommodating space 26 and the second accommodating space 31 are formed along the axial direction of the flow channel 18. The valve body 10b is able to adjust the clamping position on the restriction site 14 by the clamping part 22. Thus, the valve body 10b, the conduct pillar 15, the spoiler 16 can be positioned in the first accommodating space 26, or the first accommodating space and the second accommodating space 31 along the axial direction of the flow channel 18.

(15) Refer to FIG. 5, the restriction site 14 can be formed by a plurality of V-shaped grooves 141 arranged at interval on the opposing bars 13. Specifically, the V-shaped grooves 141 are formed as tooth shape, and the clamping part 22 can be an elastic hook 22a formed by stamping the outer wall of the shell 20b. One end of the elastic hook 22a curves inwardly to be clamped inside the V-shaped groove 141. Thus, the clamping position of the shell 20b on the valve body 10b can be adjusted.

(16) Refer to FIG. 6, the restriction site 14 can be formed by a plurality of bead grooves 142 arranged at interval. The clamping part 22 can use an elastic bead 22b1 to be clamped inside the bead grooves 142 by being pressed by a resilient component 22b2. Thus, the clamping position of the shell 20b on the valve body 10b can be adjusted.

(17) Refer to FIG. 7, when the valve body 10b is protruded from the ceiling 50b, by adjusting the clamping position on the restriction site 14 of the clamping part 22 of the shell 20b, the shell 20b can be closer to the ceiling 50, which can minimize the height difference between the shell 20b and the ceiling 50b caused by over-protruding of the valve body 10b, thereby improving the beauty of the living area.

(18) Although the present invention has been described with reference to the foregoing preferred embodiments, it will be understood that the invention is not limited to the details thereof. Various equivalent variations and modifications can still occur to those skilled in this art in view of the teachings of the present invention. Thus, all such variations and equivalent modifications are also embraced within the scope of the invention as defined in the appended claims.