Connecting piece for metal roof bearing and construction method thereof

Abstract

The invention provides a metal roof bearing connecting piece and a construction method thereof.The metal roof bearing connecting piece comprises a connecting plate, connecting assemblies are installed on the two sides of an inner cavity of the connecting plate, a first connecting piece is detachably installed on the right side of the connecting plate, and a second connecting piece is detachably installed on the left side of the connecting plate; two limiting plates are fixedly mounted on the opposite sides of the first connecting piece and the second connecting piece, grooves are formed in the opposite sides of the two limiting plates, limiting assemblies are fixedly mounted on the front side and the rear side of the right side of an inner cavity of the second connecting piece, and limiting blocks are fixedly mounted on the front side and the rear side of the left side of the first connecting piece. Through cooperative use of the connecting assembly, the limiting plate and the groove, the first connecting piece and the second connecting piece can be quickly connected and mounted, so that the construction time can be greatly shortened, large-area roof covering or emergency maintenance is particularly facilitated, the construction period is shortened, the labor cost and the management cost are reduced, and use is more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of metal roofing, and in particular to a metal roof bearing connector and a construction method thereof. Background Art

[0002] Metal roofing refers to a roofing form that uses metal sheets as roofing materials and combines the structural layer and the waterproof layer into one. The roof panels are widely used in airport terminals, aircraft maintenance hangars, stations and large transportation hubs; conference and exhibition centers, stadiums, showrooms, and large public entertainment facilities. Metal roofs require connectors during the load-bearing process.

[0003] Existing connectors are generally connected by bolts. Installing and tightening the bolts requires more construction time and cost. A common problem with bolt connections is that under the action of vibration, the bolts may gradually loosen, which may cause noise problems on the roof and may also affect the stability of the connector and the overall performance of the roof, which is very inconvenient during use.

[0004] Therefore, we make improvements on this and propose a metal roof load-bearing connector and a construction method thereof. Summary of the invention

[0005] The purpose of the present invention is to: the existing connecting parts are generally connected by bolts, and the installation and tightening of the bolts require more construction time and cost. A common problem with bolt connections is that under the action of vibration, the bolts may gradually loosen, which may cause noise problems on the roof and may also affect the stability of the connecting parts and the overall performance of the roof, which is very inconvenient during use.

[0006] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0007] The invention discloses a metal roof load-bearing connector and a construction method thereof to improve the above problems.

[0008] The specific application is as follows:

[0009] A metal roof load-bearing connecting piece comprises a connecting plate.

[0010] Connecting components are installed on both sides of the inner cavity of the connecting plate;

[0011] A first connecting member is detachably installed on the right side of the connecting plate, and a second connecting member is detachably installed on the left side of the connecting plate. Two limit plates are fixedly installed on opposite sides of the first connecting member and the second connecting member, and grooves are provided on opposite sides of the two limit plates. Limiting components are fixedly installed on the front and rear sides of the right side of the inner cavity of the second connecting member, and limiting blocks are fixedly installed on the front and rear sides of the left side of the first connecting member.

[0012] Preferably, the connecting assembly includes a shell, which is fixedly installed in the inner cavity of the connecting plate, a rotating rod is movably installed at the bottom of the inner cavity of the shell, the bottom of the rotating rod penetrates to the bottom of the shell and is fixedly installed with a rotating disk, a gear is fixedly installed on the top of the rotating rod, tooth plates are meshed on both sides of the gear, fixed plates are fixedly installed on opposite sides of the two tooth plates, blocks are fixedly installed on opposite sides of the two fixed plates, the blocks and grooves are plug-fitted into each other, first springs are fixedly installed on both sides of the opposite sides of the two fixed plates, and the first spring is fixedly connected to the shell on the side close to the shell.

[0013] Preferably, a connecting block is fixedly mounted on the bottom of the tooth plate, a limiting shell is slidably provided on the surface of the connecting block, and a side of the limiting shell close to the outer shell is fixedly connected to the outer shell.

[0014] Preferably, sliding blocks are fixedly mounted on both sides of the fixed plate, a sliding rod is slidably mounted in the inner cavity of the sliding block, and the front side and the rear side of the sliding rod are fixedly mounted in the inner cavity of the shell.

[0015] Preferably, a locking structure is provided on the outer shell, and the locking structure includes a fixing seat fixedly mounted on the outer shell, an elastomer and a locking block connected to the elastomer are installed in the fixing seat, and the end of the locking block extends to the outside of the fixing seat for locking the rotating disk, and an operating structure is provided on the locking block.

[0016] Preferably, the limiting assembly includes two second springs, both of which are arranged in the inner cavity of the second connecting member, baffles are fixedly installed on opposite sides of the two second springs, inclined blocks are fixedly installed on opposite sides of the two baffles, and a pull plate is fixedly installed on one side of the baffle.

[0017] Preferably, positioning blocks are fixedly installed on both sides of the baffle, a positioning rod is slidably installed inside the positioning block, and the side of the positioning rod close to the second connecting member is fixedly connected to the second connecting member.

[0018] Preferably, two plug rods are fixedly installed on the front and rear sides of the left side of the first connecting member, and two slots are provided on the front and rear sides of the right side of the second connecting member, and the slots and the plug rods are plug-fitted to each other.

[0019] Preferably, the tops of the first connecting member and the second connecting member are provided with notched grooves, and the sides of the notched grooves are inclined structures arranged obliquely downward;

[0020] A separator is provided at the bottom of the connecting plate, and two sets of slide rails are provided on the left and right sides of the separator respectively, the housing is slidably matched on the slide rails, and a slope structure arranged obliquely downward is provided on the side of the housing close to the limit plate, and a spring body is provided between the housing and the separator;

[0021] A side of the end of the clamping block away from the corresponding connecting piece is provided with an inclined surface structure inclined toward the inner side of the shell.

[0022] A construction method of a metal roof load-bearing connector, comprising the metal roof load-bearing connector, specifically operates as follows:

[0023] Step 1: Assemble the first connector and the second connector

[0024] The first connecting member and the second connecting member are brought close to each other. When the first connecting member and the second connecting member are brought close to each other, the insertion rod first enters the slot, and at the same time, the limiting block enters the interior of the second connecting member through the cooperation of the second spring, the baffle plate and the inclined block. Under the elastic force of the second spring, the inclined block is installed on one side of the second spring through the baffle plate, and will move due to the elastic force of the second spring, so that the inclined block enters the inner cavity of the limiting block, and the limiting block entering the interior of the second connecting member is fixed;

[0025] Step 2: Install the connecting plate

[0026] Step 21, releasing the locking state of the rotating disk by the locking structure, by rotating the rotating disk, the rotating disk drives the gear to rotate through the rotating rod when rotating, the gear drives the two toothed plates to move in opposite directions when rotating, the fixed plate moves with the toothed plates, the fixed plate drives the card block to move when moving, and at the same time, the first spring is stretched, and the locking state of the rotating disk by the locking structure is released;

[0027] Step 22, placing the mounting plate in the notch groove, releasing the locking state of the rotating disk by the locking structure, the rotating disk is released, the first spring moves the block to the groove on the limit plate, the limit plate is fixedly installed, and at the same time the housing moves outward relative to the connecting plate and fits on the inclined structure;

[0028] Open the locking structure to lock the rotating disk, and complete the assembly of the connecting plate and the first connecting member and the second connecting member;

[0029] Step 3: Disassemble the connecting plate, the first connecting piece, and the second connecting piece

[0030] Release the locking state of the rotating disk by the locking structure, rotate the rotating disk, move the block out of the groove and into the shell, open the locking state of the rotating disk by the locking structure, maintain this state, the shell is separated from the corresponding connecting piece and reset under the action of the spring body, and the connecting plate is removed;

[0031] Pull the pull plate to allow the inclined block to separate from the inner cavity of the limit block, the limit block is released, the first connecting piece and the second connecting piece are separated, and the disassembly operation is completed.

[0032] Compared with the prior art, the present invention has the following beneficial effects: through the coordinated use of the connecting assembly, the limit plate and the groove, the first connecting member and the second connecting member can be quickly connected and installed, thereby greatly shortening the construction time, which is especially beneficial for large-area roof covering or emergency repairs, shortening the construction period, thereby reducing labor costs and management costs, and being more convenient in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the structure provided for this application;

[0034] Figure 2 A schematic diagram of the structure provided in this application when viewed from above;

[0035] Figure 3 A schematic diagram of the main view of the limit block provided in this application;

[0036] Figure 4 A schematic bottom-up cross-sectional view of the connection plate provided in this application;

[0037] Figure 5 A bottom-up cross-sectional schematic diagram of a connection assembly provided in the present application;

[0038] Figure 6 A schematic diagram of the front and cross-sectional view of the limit assembly provided in this application;

[0039] Figure 7 A schematic diagram of the structure of the locking structure provided in this application;

[0040] Figure 8 This is a diagram of the connection relationship between the connecting plate and the housing provided for this application.

[0041] Indicated in the figure:

[0042] 1. Connecting plate; 101. separator; 102. slide rail; 103. spring body; 2. connecting assembly; 201. housing; 202. rotating rod; 203. rotating disk; 204. gear; 205. tooth plate; 206. fixing plate; 207. clamping block; 208. first spring; 209. connecting block; 210. limiting shell; 211. sliding block; 212. sliding rod; 213. fixing seat; 214. elastic body; 215. locking block; 3. first connecting member; 4. second connecting member; 5. limiting plate; 6. groove; 7. limiting assembly; 701. second spring; 702. baffle; 703. inclined block; 704. pull plate; 705. positioning block; 706. positioning rod; 8. limiting block; 9. plug rod; 10. slot. DETAILED DESCRIPTION

[0043] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0044] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention claimed for protection, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0045] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0046] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0047] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0048] As described in the background technology, existing connectors are generally connected by bolts. Installing and tightening the bolts requires more construction time and cost. A common problem with bolt connections is that under the action of vibration, the bolts may gradually loosen, which may cause noise problems on the roof and may also affect the stability of the connectors and the overall performance of the roof, which is very inconvenient during use.

[0049] In order to solve this technical problem, the present invention provides a metal roof load-bearing connector and a construction method thereof.

[0050] Please refer to Figure 1-6 A metal roof load-bearing connector includes a connecting plate 1, which is used to connect the metal roof. Since the metal roof needs to have wind-resistant performance, the connecting plate 1 is required to have good mechanical properties.

[0051] A first connecting member 3 is detachably installed on the right side of the connecting plate 1, and a second connecting member 4 is detachably installed on the left side of the connecting plate 1. Two limit plates 5 are fixedly installed on the opposite sides of the first connecting member 3 and the second connecting member 4. Grooves 6 are provided on the opposite sides of the two limit plates 5. A limit assembly 7 is fixedly installed on the front and rear sides of the right side of the inner cavity of the second connecting member 4, and a limit block 8 is fixedly installed on the front and rear sides of the left side of the first connecting member 3.

[0052] The first connecting member 3 and the second connecting member 4 are connected by two sets of connecting components 2. After the connection, the two sides of the connecting plate 1 are respectively connected to the corresponding connecting members, which can ensure the mechanical strength and mechanical properties of the connecting plate 1 and ensure that the metal roof has excellent wind-resistant performance. Secondly, the connecting members can also be directly connected, and the mechanical strength (shear resistance) can also be effectively guaranteed.

[0053] Connecting components 2 are installed on both sides of the inner cavity of the connecting plate 1.

[0054] The connecting component 2 includes a shell 201, which is fixedly installed in the inner cavity of the connecting plate 1. A rotating rod 202 is movably installed at the bottom of the inner cavity of the shell 201. The bottom of the rotating rod 202 penetrates to the bottom of the shell 201 and is fixedly installed with a rotating disk 203. A gear 204 is fixedly installed on the top of the rotating rod 202. Tooth plates 205 are meshed on both sides of the gear 204. Fixed plates 206 are fixedly installed on opposite sides of the two tooth plates 205. Blocks 207 are fixedly installed on opposite sides of the two fixed plates 206. The block 207 and the groove 206 are socket-fitted. First springs 208 are fixedly installed on both sides of the opposite sides of the two fixed plates 206. The first spring 208 is fixedly connected to the shell 201 on the side close to the shell 201.

[0055] A connecting block 209 is fixedly installed at the bottom of the tooth plate 205 , and a limiting shell 210 is slidably provided on the surface of the connecting block 209 . The limiting shell 210 is fixedly connected to the outer shell 201 at one side close to the outer shell 201 .

[0056] Sliding blocks 211 are fixedly mounted on both sides of the fixing plate 206 . A sliding rod 212 is slidably mounted in the inner cavity of the sliding block 211 . The front side and the rear side of the sliding rod 212 are fixedly mounted in the inner cavity of the housing 201 .

[0057] The outer shell 201 is provided with a locking structure, which includes a fixing seat 213 fixedly mounted on the outer shell 201, an elastomer 214 and a locking block 215 connected to the elastomer are installed in the fixing seat 213, and an end of the locking block 215 extends to the outside of the fixing seat 213 for locking the rotating disk 203, and an operating structure is provided on the locking block 215.

[0058] The limiting assembly 7 includes two second springs 701, and the two second springs 701 are both arranged in the inner cavity of the second connecting member 4. A baffle 702 is fixedly installed on the opposite side of the two second springs 701, and an inclined block 703 is fixedly installed on the opposite side of the two baffles 702. A pull plate 704 is fixedly installed on one side of the baffle 702.

[0059] Positioning blocks 705 are fixedly installed on both sides of the baffle 702 , and a positioning rod 706 is slidably installed inside the positioning block 705 . The side of the positioning rod 706 close to the second connecting member 4 is fixedly connected to the second connecting member 4 .

[0060] Among them, two plug rods 9 are fixedly installed on the front and rear sides of the left side of the first connecting member 3, and two slots 10 are provided on the front and rear sides of the right side of the second connecting member 4, and the slots 10 and the plug rods 9 are plug-fitted.

[0061] like Figure 8 As shown, the tops of the first connecting member 3 and the second connecting member 4 are provided with notched grooves, and the sides of the notched grooves are inclined structures arranged obliquely downward;

[0062] A separator 101 is provided at the bottom of the connecting plate 1, and two sets of slide rails 102 are provided on the left and right sides of the separator 101, respectively. The housing 201 is slidably matched on the slide rails 102, and a side of the housing 201 close to the limit plate 6 is provided with an inclined surface structure arranged obliquely downward, and a spring body 103 is provided between the housing 201 and the separator 101;

[0063] The end of the block 5 is provided with an inclined surface structure inclined toward the inner side of the housing 201 on one side away from the corresponding connecting piece. During the connection and adaptation process between the block 5 and the stopper 6, the housing 201 will move toward the inclined surface structure until it fits on the side, and in windy weather, the bearing force of the metal roof can be transferred to the connecting piece, thereby protecting the metal roof and improving the wind-resistant ability of the connecting plate 1 and the metal roof.

[0064] A construction method of a metal roof load-bearing connector, comprising the metal roof load-bearing connector, specifically operates as follows:

[0065] Step 1: Assemble the first connecting member 3 and the second connecting member 4

[0066] The first connecting member 3 and the second connecting member 4 are brought close to each other. When they are close to each other, the insertion rod 9 first enters the slot 10. At the same time, the limiting block 8 enters the interior of the second connecting member 4 through the cooperation of the second spring 701, the baffle 702 and the inclined block 703. Under the elastic force of the second spring 701, the inclined block 703 is installed on one side of the second spring 701 through the baffle 702. It will move due to the elastic force of the second spring 703, and the inclined block 703 enters the inner cavity of the limiting block 8 to fix the limiting block 8 that has entered the interior of the second connecting member 4.

[0067] Step 2: Install the connecting plate 1

[0068] Step 21, releasing the locking state of the rotating disk 203 by the locking structure, by rotating the rotating disk 203, the rotating disk 203 drives the gear 204 to rotate through the rotating rod 202 when rotating, the gear 204 drives the two tooth plates 205 to move in opposite directions when rotating, the fixed plate 206 moves along with the tooth plates 205, and the fixed plate 206 drives the block 207 to move when moving, and at the same time, the first spring 208 is stretched, and the locking state of the rotating disk 203 by the locking structure is released;

[0069] Step 22, the connecting plate 1 is placed in the notch groove, the locking state of the locking structure on the rotating disk 203 is released, the rotating disk 203 is released, the first spring 208 moves the block 207 to the groove 6 on the limit plate 5, the limit plate 5 is fixedly installed, and at the same time, the housing 201 moves outward relative to the connecting plate 1 and fits on the inclined structure;

[0070] The locking structure is unlocked to lock the rotating disk 203, and the assembly of the connecting plate 1 and the first connecting member 3 and the second connecting member 4 is completed;

[0071] Step 3: Disassemble the connecting plate 1, the first connecting member 3, and the second connecting member 4

[0072] Release the locking state of the rotating disk 203 by the locking structure, rotate the rotating disk 203, move the block 207 out of the groove 6 and into the shell, open the locking state of the rotating disk 203 by the locking structure, maintain this state, the shell 201 is separated from the corresponding connecting piece and reset under the action of the spring body 103, and the connecting plate 1 is removed;

[0073] Pull the pull plate 704 to allow the inclined block 703 to separate from the inner cavity of the limiting block 8, the limiting block 8 is released, and the first connecting member 3 and the second connecting member 4 are separated, completing the disassembly operation.

[0074] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A metal roof load-bearing connector, characterized in that: Including connecting plate; Connecting components are installed on both sides of the inner cavity of the connecting plate; A first connecting member is detachably installed on the right side of the connecting plate, and a second connecting member is detachably installed on the left side of the connecting plate. Two limit plates are fixedly installed on opposite sides of the first connecting member and the second connecting member, and grooves are provided on opposite sides of the two limit plates. Limiting components are fixedly installed on the front and rear sides of the right side of the inner cavity of the second connecting member, and limiting blocks are fixedly installed on the front and rear sides of the left side of the first connecting member.

2. A metal roof load-bearing connector according to claim 1, characterized in that: The connecting assembly includes a shell, which is fixedly installed in the inner cavity of a connecting plate, a rotating rod is movably installed at the bottom of the inner cavity of the shell, the bottom of the rotating rod penetrates to the bottom of the shell and is fixedly installed with a rotating disk, a gear is fixedly installed on the top of the rotating rod, tooth plates are meshed on both sides of the gear, fixed plates are fixedly installed on opposite sides of the two tooth plates, clamping blocks are fixedly installed on opposite sides of the two fixed plates, the clamping blocks and grooves are plug-fitted with each other, first springs are fixedly installed on both sides of the opposite sides of the two fixed plates, and the first spring is fixedly connected to the shell on a side close to the shell.

3. A metal roof load-bearing connector according to claim 2, characterized in that: A connecting block is fixedly installed at the bottom of the tooth plate, a limiting shell is slidably arranged on the surface of the connecting block, and a side of the limiting shell close to the shell is fixedly connected to the shell.

4. A metal roof load-bearing connector according to claim 2, characterized in that: Sliding blocks are fixedly installed on both sides of the fixed plate, a sliding rod is slidably installed in the inner cavity of the sliding block, and the front side and the rear side of the sliding rod are fixedly installed in the inner cavity of the shell.

5. A metal roof load-bearing connector according to claim 2, characterized in that: The outer shell is provided with a locking structure, which includes a fixing seat fixedly mounted on the outer shell, an elastomer and a locking block connected to the elastomer installed in the fixing seat, an end of the locking block extends to the outside of the fixing seat for locking the rotating disk, and an operating structure is provided on the locking block.

6. A metal roof load-bearing connector according to claim 1, characterized in that: The limiting assembly includes two second springs, both of which are arranged in the inner cavity of the second connecting member, baffles are fixedly installed on opposite sides of the two second springs, inclined blocks are fixedly installed on opposite sides of the two baffles, and a pull plate is fixedly installed on one side of the baffle.

7. A metal roof load-bearing connector according to claim 6, characterized in that: Positioning blocks are fixedly installed on both sides of the baffle, and a positioning rod is slidably installed inside the positioning block. The side of the positioning rod close to the second connecting member is fixedly connected to the second connecting member.

8. A metal roof load-bearing connector according to claim 1, characterized in that: Two plug rods are fixedly installed on the front side and the rear side of the left side of the first connecting member, and two slots are provided on the front side and the rear side of the right side of the second connecting member, and the slots and the plug rods are plugged and adapted to each other.

9. A metal roof load-bearing connector according to claim 2, characterized in that: The tops of the first connecting member and the second connecting member are provided with notched grooves, and the sides of the notched grooves are inclined structures arranged obliquely downward; A separator is provided at the bottom of the connecting plate, and two sets of slide rails are provided on the left and right sides of the separator respectively, the housing is slidably matched on the slide rails, and a slope structure arranged obliquely downward is provided on the side of the housing close to the limit plate, and a spring body is provided between the housing and the separator; A side of the end of the clamping block away from the corresponding connecting piece is provided with an inclined surface structure inclined toward the inner side of the shell.

10. A construction method of a metal roof load-bearing connector, comprising the metal roof load-bearing connector as claimed in any one of claims 1 to 9, and the specific operations are as follows: Step 1: Assemble the first connector and the second connector The first connecting member and the second connecting member are brought close to each other. When the first connecting member and the second connecting member are brought close to each other, the insertion rod first enters the slot, and at the same time, the limiting block enters the interior of the second connecting member through the cooperation of the second spring, the baffle plate and the inclined block. Under the elastic force of the second spring, the inclined block is installed on one side of the second spring through the baffle plate, and will move due to the elastic force of the second spring, so that the inclined block enters the inner cavity of the limiting block, and the limiting block entering the interior of the second connecting member is fixed; Step 2: Install the connecting plate Step 21, releasing the locking state of the rotating disk by the locking structure, by rotating the rotating disk, the rotating disk drives the gear to rotate through the rotating rod when rotating, the gear drives the two toothed plates to move in opposite directions when rotating, the fixed plate moves with the toothed plates, the fixed plate drives the card block to move when moving, and at the same time, the first spring is stretched, and the locking state of the rotating disk by the locking structure is released; Step 22, placing the mounting plate in the notch groove, releasing the locking state of the rotating disk by the locking structure, the rotating disk is released, the first spring moves the block to the groove on the limit plate, the limit plate is fixedly installed, and at the same time the housing moves outward relative to the connecting plate and fits on the inclined structure; Open the locking structure to lock the rotating disk, and complete the assembly of the connecting plate and the first connecting member and the second connecting member; Step 3: Disassemble the connecting plate, the first connecting piece, and the second connecting piece Release the locking state of the rotating disk by the locking structure, rotate the rotating disk, move the block out of the groove and into the shell, open the locking state of the rotating disk by the locking structure, maintain this state, the shell is separated from the corresponding connecting piece and reset under the action of the spring body, and the connecting plate is removed; Pull the pull plate to allow the inclined block to separate from the inner cavity of the limit block, the limit block is released, the first connecting piece and the second connecting piece are separated, and the disassembly operation is completed.

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