JP4148684B2 - Piping clamp bracket - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is, for example, a wall surface of a building among air conditioning pipes such as refrigerant pipes arranged over a plurality of air conditioning indoor units installed on each floor from an air conditioning outdoor unit installed on the roof of a building. In addition, the present invention relates to a piping clamp fitting used in the case where a predetermined portion of a vertical pipe disposed in the vertical direction along a vertical axis is fixedly supported on a bracket or the like on the housing side.
[0002]
[Prior art]
Conventionally, a support cylinder body in which annular engagement protrusions projecting outward in the radial direction of the pipe are formed on both ends of the vertical pipe for air conditioning arranged in the vertical direction is externally fitted. The clamp fitting is fixed by welding means such as brazing, and the mounting plate portion is connected to both ends of the clamp plate portion having a substantially C-shaped cross section on the outer peripheral surface of the support cylinder. The outer peripheral surface of the support cylinder is attached with a substantially C-shaped clamp plate by mounting it in an externally fitted state and fastening and fixing the mounting plate of this clamp fitting to the fixing part of the piping construction site with bolts and nuts. In addition to holding and fixing, the vertical movement of the vertical pipe and the clamp fitting is made possible by the contact in the axial direction between the upper and lower end faces of the clamp part and the engaging projections provided at the upper and lower end parts of the support cylinder. (For example, JP-A-9-329273) See Japanese).
[0003]
[Problems to be solved by the invention]
In the conventional pipe fixing method, for example, when the vertical pipe fixing support portion is clamped and fixed by the clamp plate portion of the clamp metal via a heat insulating material surrounding the vertical pipe, the heat contraction or heat of the vertical pipe is fixed. There is no drop in the vertical pipe weight due to a decrease in tightening force between the vertical pipe and the heat insulating material due to expansion, etc. Although it can prevent buckling deformation and breakage, it prevents the relative movement in the vertical direction of the clamp part of the clamp fitting at the upper and lower parts of the support cylinder that is externally fixed to the vertical pipe. Since it is necessary to bulge and form the ring-shaped engaging protrusion, the pipe fixing cost has been increased.
[0004]
In addition, in order to strengthen the function of preventing the vertical pipe from descending due to the contact between the annular projection of the support cylinder and the clamp plate portion of the clamp fitting, the clamp having a substantially C-shaped cross section is formed. It is necessary to increase the rigidity of the plate part and the mounting plate part integrally formed at both ends of the plate part by increasing the thickness of the plate, and the higher the rigidity of the clamp bracket itself, the larger the diameter of the clamp plate part. Since a large amount of labor is required for the operation, it is easy to take time for the mounting work of the clamp fitting to the support cylinder fixed to the vertical pipe.
[0005]
The present invention has been made in view of the above circumstances, and its main problem is to reduce the manufacturing cost while preventing buckling deformation and breakage due to the weight drop of the vertical pipe. In addition, it is possible to quickly and easily perform the installation work on the pipe side while strengthening the function of preventing the vertical pipe from falling due to its own weight, and it is possible to facilitate the handling by using the configuration for that purpose. This is to provide a clamp fitting for piping that can be used.
[0006]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided a substantially semicircular arc-shaped clamp plate portion that can be applied to a pipe and a pair of left and right clamp members that are provided at one end of the clamp plate portion. At the other end portion of the clamp plate portion, an engagement connecting portion is provided for detachably engaging and connecting the both in the state of being able to open and close the diameter expansion side and the diameter reduction side. It is a clamp metal fitting for piping that is configured to clamp and hold the pipe with both clamp plates in accordance with the tightening and fixing operation,
Engagement holes that prevent relative movement in the tube axis direction by engaging both the clamp members from the outside in the tube radial direction with respect to the engagement protrusions that are formed to protrude at the locations corresponding to the fixed support of the pipe, At least one is formed in a state of opening at the other end side of the clamp plate portion, and the engagement connecting portion is formed with a lock portion formed on the one clamp plate portion where the opening engagement hole exists, and the lock Only when the portion is elastically deformed to the narrow side within the width of the opening engagement hole, and is configured with a locking hole formed in the other clamp plate portion in a state that allows the engagement thereof. In the point.
[0007]
According to the above characteristic configuration, for example, when a predetermined location of an air conditioning vertical pipe, which is an example of piping, is attached to a fixing portion of a piping construction location, the clamp plate portions of both clamp members that are opened around the engagement connecting portion Is attached to a portion corresponding to the fixed support of the vertical pipe, and the engagement holes formed in both clamp members are engaged with the engagement protrusions formed in the pipe from the radial direction, When the mounting plate part of both clamp members is fastened and fixed to the fixing part of the piping construction site with a fastener, both clamp plate parts that reduce in diameter as the tightening and fixing operation clamps and fixes the pipe, and at the same time, engages both clamp members. Due to the contact between the peripheral edge of the hole and the engaging protrusion, it is possible to reliably prevent the weight of the vertical pipe from falling.
[0008]
In addition, by increasing the rigidity of the pair of clamp members by increasing the plate thickness, etc., while strengthening the function of preventing the vertical pipe from falling due to the engagement between the engagement protrusions of the pipes and the periphery of the engagement holes of both clamp members. Since the other ends of the clamp plate parts of both clamp members can be freely opened and closed to the enlarged diameter side and the reduced diameter side with the engagement connecting part as the center, it is easy to mount the clamp fitting on the vertical pipe. Can be done.
[0009]
Further, at least one engagement hole is formed in an open state on the other end side of the clamp plate portion, and one clamp plate portion on the side where this is present is connected to one of the components of the engagement connecting portion. By forming the joint portion, the engaging portion can be freely elastically deformed to the narrow side within the width of the engaging portion using the opening engaging hole.
[0010]
Therefore, the other clamp plate portion is formed with a locking hole that allows engagement only when the locking portion is elastically deformed to the narrow side within the width of the opening engagement hole. Thus, it is possible to reliably engage and connect the locking portion and the locking hole using the elastic restoring force of one of the clamp members without falling off.
[0011]
Therefore, while preventing buckling deformation and breakage due to the weight drop of the vertical pipe, it is only necessary to form a single locking projection at a location corresponding to the fixed support of the pipe, thereby reducing the cost of fixing the pipe. In addition, it is possible to perform the mounting work on the pipe side quickly and easily while enhancing the function of preventing the vertical pipe from falling by its own weight, and it is also possible to facilitate the handling of the clamp fitting.
[0012]
According to a second aspect of the present invention, there is provided the piping clamp fitting according to the second aspect of the present invention, wherein the engagement protrusions of the pipe are formed in an annular shape, and the engagement holes of the both clamp members are applied to a part of the mounting plate portion. It is in the point formed in the slit shape which each opens to the other end side of a clamp board part in the state.
[0013]
According to the above characteristic configuration, the contact area in the tube axis direction between the engagement protrusion of the pipe and the periphery of the engagement hole of both clamp members is increased, so that the relative movement in the tube axis direction of the pipe is strengthened. Since the engagement hole is formed in a long slit shape in the circumferential direction that opens to the other end side of the clamp plate portion in a state of being hooked on a part of the mounting plate portion, the engagement portion The elastic deformation operation to the narrow side of can be easily performed with a small operating force.
[0014]
According to a third aspect of the present invention, there is provided a feature of the clamp fitting for piping according to the present invention, wherein the engaging projection is integrally formed with a support cylinder fixed in an external fitting state at a location corresponding to the fixed support of the piping.
[0015]
According to the above characteristic configuration, the engagement protrusion is integrally formed on the support cylinder that is separate from the pipe. Therefore, the engagement protrusion is more robust than when the engagement protrusion is formed directly on the pipe. However, it can be easily manufactured.
[0016]
According to claim 4 of the present invention, the piping clamp fitting is characterized in that a portion of the both clamp plate portions that contacts the outer peripheral surface of the other end portion of the mating clamp plate portion engaged and connected is clamped. It is in a point that it is bent in a state where it bulges outward in the tube radial direction by the thickness of the plate portion.
[0017]
According to the above-described characteristic configuration, when both clamp members are engaged and connected, the inner surfaces of the bulging portions that are bent outward by the thickness of each clamp plate portion are connected to each other at the other clamp plate portions on the other side. By contacting the outer peripheral surfaces of the end portions, the outer peripheral surfaces of the pipes can be held even on the inner peripheral surfaces of the respective other end portions, and the mechanical strength at the engagement connecting portions of both clamp members is increased. Can be increased.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
[First Embodiment]
1 to 10 show air conditioning pipes such as metal (copper) refrigerant pipes arranged from an air conditioning outdoor unit installed on the roof of a building to a plurality of air conditioning indoor units installed on each floor. A case in which a predetermined portion of a vertical pipe P arranged vertically along a wall surface of a building is fixedly supported on a mounting frame F (an example of a fixed portion) using grooved steel provided on the housing side. The pipe fixing support device used in the above is shown, and can be externally fitted from the X axis direction of the vertical pipe P to the fixed support equivalent part of the vertical pipe P, and fixed to the fixed support equivalent part of the vertical pipe P by welding means such as brazing. A metal (copper) support cylinder 1, a bracket 3 having a substantially U-shape in plan view, which is fastened and fixed to a mounting frame F with a bolt 2 which is an example of a fixing connection means, and a bracket (of a fixing portion) Example) Fixed to each vertical pipe P on both flanges 3A of 3 And a a support cylinder 1 and the metal clamp bracket A to detachably fixedly supported through a bolt 4A · nuts 4B is an example of a fastener 4.
[0019]
The support cylinder 1 is composed of a plurality of types having inner diameters corresponding to the types of outer diameters of the vertical pipes P, and the central portion of each support cylinder 1 in the tube axis X direction is in the pipe diameter direction. After the outer bulge is formed, it is crushed from the tube axis X direction to integrally form an annular engagement protrusion 1a that protrudes outwardly in the tube radial direction.
[0020]
Each of the clamp fittings A is integrated with the semicircular or substantially semicircular arc clamp plate portions 5A and 6A that can be applied along the outer peripheral surface of the support cylinder 1, along the tube diameter direction from one end thereof. And a pair of left and right clamp members 5 and 6 comprising mounting plate portions 5B and 6B connected to each other, and the other end portions of both clamp plate portions 5A and 6A are expanded with both of these 5A and 6A. Engagement connection portions 7 are provided on the diameter side and the diameter reduction side so as to be detachably engageable in a state that can be opened and closed, and both the mounting plate portions 5B and 6B and both flange portions 3A of the bracket 3 are fastened. When clamped and fixed at 4, the support cylinder 1 fixed to the vertical pipe P is clamped and fixed by the clamp plate portions 5 </ b> A and 6 </ b> A whose diameter is reduced in accordance with the clamping and fixing operation.
[0021]
Further, both mounting plate portions 5B and 6B of the clamp fitting A are formed with insertion holes 5a and 6a for the bolt 4A of the fastener 4 and both mounting plate portions 5B are formed in both flange portions 3A of the bracket 3. , 6B are formed in a predetermined range so as to be fixedly connected so that the mounting position can be changed in the vertical direction. A long hole-like bolt insertion hole 3a is formed, and the connecting portion 3B of the bracket 3 is in contact with the mounting frame F from above. A corresponding flange-shaped load receiving portion 3C and an insertion hole 3b for the bolt 2 are formed.
[0022]
Then, at the center position in the width direction of both the clamp members 5 and 6, by engaging the annular engaging projection 1a of the support cylinder 1 fixed to the vertical pipe P from the outside in the pipe radial direction. Engagement holes 8 for preventing relative movement in the tube axis X direction are formed, and each engagement hole 8 is formed on one of the mounting plate portions 5B and 6B as shown in FIGS. It is formed in the shape of a long and narrow slit along the circumferential direction opening to the other end side of the clamp plate portions 5A and 6A in a state of being hooked on the portion.
[0023]
The engagement connecting portion 7 is a locking portion 7A composed of a pair of locking protrusions 7a formed at the other end portion of one clamp plate portion 5A in a state of being divided into two in the width direction by the opening engaging hole 8. And only when the both locking projections 7a of the locking portion 7A are elastically deformed to the small width side within the width W of the opening engagement hole 8, the other clamp is allowed to be engaged. It is comprised from the locking hole 7B formed in the board part 5A.
[0024]
In addition, a locking groove 7b that cuts into the opening engagement hole 8 side with a width larger than the plate thickness of the other clamping plate portion 6A is formed in the connecting portion 7f that is continuous with the both locking projection pieces 7a. A pair of locking projections 7a are engaged with the locking holes 7B between a pair of locking projections 7c and a locking hole 7B formed at the other end of the clamp plate 6A. When the clamp plate portions 5A and 6A are moved relatively apart in the engaged and connected state, guide grooves 7g that slide and guide to both side edges of the connecting portion 7f are continuously formed in a state communicating with the locking holes 7B. ing.
[0025]
Furthermore, as shown in FIG. 6, a receiving part 7d where the outer peripheral surface of the engaging part 7A in one of the clamp plate parts 5A contacts between the clamp plate parts 5A and 6A engaged and connected, and an opening member. The receiving part 7e where the outer peripheral surfaces of the pair of locking projections 7c formed on the other end of the other clamp plate 6A in a state of being divided into two in the width direction by the joint hole 8 is a clamp plate It is bent and formed in a convex shape so as to bulge outward in the tube radial direction by the thickness of 5A and 6A.
[0026]
For example, when attaching a predetermined portion of an air conditioning vertical pipe P, which is an example of piping, to both flange portions 3A of the bracket 3 at a piping construction location, both clamp members 5 that are operated to open around the engagement connecting portion 7 are provided. The clamp plate portions 5A, 6A of 6 are externally attached to the support cylinder 1 fixed to the portion corresponding to the fixed support of the vertical pipe P, and the slit-like engagement holes 8 formed in both the clamp members 5, 6 are installed. Are engaged with the engaging protrusions 1a of the support cylinder 1 from the tube diameter direction, and the attachment plate portions 5B and 6B of the clamp members 5 and 6 are fastened to the flange portions 3A of the bracket 3 with the fasteners 4. When tightened and fixed, both clamp plate portions 5A and 6A whose diameter is reduced in accordance with the tightening and fixing operation clamps and fixes the vertical pipe P, and at the same time, the engagement hole 8 periphery of both the clamp members 5 and 6 and the support cylinder 1 are engaged. Vertical piping P by contact with the mating protrusion 1a The self-weight drop can be reliably prevented.
[0027]
In addition, by increasing the rigidity of the pair of clamp members 5 and 6 by increasing the plate thickness or the like, the vertical pipe is formed by the engagement between the engagement protrusion 1a of the vertical pipe P and the periphery of the engagement hole 8 of both the clamp members 5 and 6. While strengthening the function of preventing the lowering of the weight of P, the other end portions of the clamp plate portions 5A and 6A of the clamp members 5 and 6 can be freely expanded on the diameter expansion side and the diameter reduction side with the engagement connecting portion 7 as the center. Since the opening / closing operation can be performed, the mounting work of the clamp fitting A to the vertical pipe P can be easily performed.
[0028]
Further, both the engagement holes 8 are formed so as to open on the other end side of the clamp plate portions 5A and 6A, and one of the engagement connecting portions 7 is connected to one clamp plate portion 5A on the side where the engagement hole 8 exists. By forming the engaging portion 7A, which is a component, the engaging portion 7A can be freely elastically deformed to the small width side within the width W of the engaging portion 7A using the slit-like opening engaging hole 8. it can.
[0029]
Therefore, the other clamping plate portion 6A has a locking hole that allows engagement only when the locking portion 7A is elastically deformed to the narrow side within the width W of the opening engagement hole 8. By forming 7B, the engaging portion 7A and the engaging hole 7B can be reliably engaged and connected without using the elastic restoring force of the one clamp member 5 without falling off.
[0030]
[Other Embodiments]
(1) In each of the above-described embodiments, the central portion of the support cylinder 1 in the tube axis X direction is bulged outward in the tube radial direction, and then crushed from the tube axis X direction. An annular engagement protrusion 1a protruding in a hook shape outwardly in the tube diameter direction is integrally formed. An annular member constituting the engagement protrusion 1a is fixed to the outer peripheral surface of the support cylinder 1 by welding or the like. May be.
Further, the engagement protrusion 1 a may be formed intermittently in the circumferential direction at a plurality of circumferential positions on the outer peripheral surface of the support cylinder 1.
[0031]
(2) In the above-described first embodiment, the clamp members 5 and 6 are engaged with the engagement protrusions 1a formed at the locations corresponding to the fixed support of the pipe P from the outside in the pipe radial direction. The engagement hole 8 that prevents relative movement in the tube axis direction is configured to be opened on the other end side of both the clamp plate portions 5A and 6A. However, only one engagement hole 8 is the clamp plate portion 5A. , 6A may be formed so as to open on the other end side.
[Brief description of the drawings]
FIG. 1 is a perspective view of the first embodiment of the present invention when mounted. FIG. 2 is a longitudinal sectional front view of a portion passing through the center of both clamp fittings. FIG. 3 is an exploded view of both clamp fittings and a bracket. FIG. 4 is a plan view when both clamp fittings are fixedly connected to a bracket. FIG. 5 is an exploded perspective view of the clamp fittings. FIG. 6 is a horizontal sectional view of both clamp members. [Fig. 8] Front view of both clamp members when separated. [Fig. 9] Front view when the locking portion is elastically deformed to the small width side. [Fig. 10] Elastic deformation operation of the locking portion to the small width side. Side view of when [Explanation of symbols]
A Clamp bracket F Fixed part (mounting frame)
P piping (vertical piping for air conditioning)
X Tube axis direction 1 Support cylinder 1a Protrusion (annular protrusion)
3 fixed part (bracket)
5 Clamp member 5A Clamp plate portion 5B Mounting plate portion 6 Clamp member 6A Clamp plate portion 6B Mounting plate portion 7 Engagement connection portion 8 Engagement hole

Claims (4)

Of the pair of left and right clamp members consisting of a substantially semicircular arc clamp plate that can be applied to the pipe and a mounting plate connected to one end of the clamp plate, both of these are attached to the other end of both clamp plates. An engagement connecting part that detachably engages and connects in a state that can be opened and closed on the diameter-expanded side and the diameter-reduced side is provided. A clamp fitting for piping configured to hold and hold a pipe,
Engagement holes that prevent relative movement in the tube axis direction by engaging both the clamp members from the outside in the tube radial direction with respect to the engagement protrusions that are formed to protrude at the locations corresponding to the fixed support of the pipe, At least one is formed in a state of opening at the other end side of the clamp plate portion, and the engagement connecting portion is formed with a lock portion formed on the one clamp plate portion where the opening engagement hole exists, and the lock Only when the portion is elastically deformed to the narrow side within the width of the opening engagement hole, and is configured with a locking hole formed in the other clamp plate portion in a state that allows the engagement thereof. Clamp fitting for piping. The pipe is formed in an annular shape with an engagement projection, and the engagement holes of the clamp members are in a slit shape that opens to the other end side of the clamp plate portion in a state of being hooked on a part of the mounting plate portion. The clamp metal fitting for piping according to claim 1 formed. The pipe clamp fitting according to claim 1 or 2, wherein the engagement protrusion is integrally formed on a support cylinder fixedly attached to a place corresponding to a fixed support of the pipe in an external fitting state. Of the two clamp plate portions, a portion that contacts the outer peripheral surface of the other end portion of the mating clamp plate portion engaged and connected bulges outward in the tube radial direction by the plate thickness of the clamp plate portion. The clamp metal fitting for piping according to claim 1, 2 or 3, which is bent in a state.

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