A mounting structure of a communication cabinet heat dissipation module and a communication cabinet

Abstract

The application relates to the technical field of communication equipment heat dissipation, and discloses a mounting structure of a communication cabinet heat dissipation module and a communication cabinet, which comprises a plurality of mounting pieces arranged on a cabinet door shell body, four mounting and matching positions are formed around each air vent by the mounting pieces, wherein two mounting and matching positions located at two ends of a first diagonal line are respectively provided with plug-in positioning parts, two mounting and matching positions located at two ends of a second diagonal line are respectively provided with fixed connecting parts, the mounting pieces between two adjacent air vents are provided with a first matching part and a second matching part corresponding to the two adjacent heat dissipation modules respectively, so that the adjacent heat dissipation modules share the mounting pieces and form staggered positioning and fixing relationships. The heat dissipation module can be quickly positioned and mounted through cooperation of the plug-in positioning parts and the fixed connecting parts, the number of mounting components is reduced through the mode that the adjacent heat dissipation modules share the mounting pieces, the cabinet door space utilization rate is improved, and the installation and maintenance of the plurality of heat dissipation modules are facilitated.

Description

Technical Field

[0001] This invention relates to the field of heat dissipation technology for communication equipment, and in particular to an installation structure for a heat dissipation module of a communication cabinet and a communication cabinet. Background Technology

[0002] As communication equipment becomes increasingly integrated, communication cabinets typically require multiple heat dissipation modules to facilitate airflow within the cabinet and reduce heat generated during operation. In existing communication cabinets, these heat dissipation modules are usually installed at ventilation holes on the cabinet door or mounting plate and secured to the door or mounting plate using multiple fasteners.

[0003] In existing technologies, heat dissipation module installation typically requires placing the heat dissipation module in its designated mounting position and then securing it one by one with multiple fasteners. This process necessitates operators maintaining constant alignment between the heat dissipation module and its mounting position, resulting in a cumbersome installation process and low assembly efficiency. Furthermore, when multiple heat dissipation modules are installed side-by-side, each module usually requires an independent mounting structure, leading to redundant mounting components between adjacent modules and hindering the full utilization of cabinet space. Therefore, this paper proposes an installation structure for heat dissipation modules in a communication cabinet and a corresponding communication cabinet design to address these issues.

[0004] The existing Chinese invention patent application with patent publication number CN121711966A discloses a server rack with a dual heat dissipation structure of liquid cooling and air cooling. It includes a rack body, a door connected to one side of the rack body by a hinge, an adjustable column inside the rack body, a support plate on the adjustable column, and the support plate is divided into a liquid cooling space and an air cooling space. The liquid cooling space is equipped with a liquid cooling coil structure, and the air cooling space is equipped with a cooling fan. The server rack is cooled by a combination of liquid cooling and air cooling. The existing Chinese invention patent application CN106455440A discloses a server rack with air conditioning, which includes a server rack, a server, an evaporator, a fan, an air duct, a temperature measuring device, and a control system. The air duct guides the airflow and the heat exchange structure is used to cool down the equipment inside the server rack.

[0005] While the above solutions have many advantages, they do not solve the aforementioned technical problems. Summary of the Invention

[0006] To overcome the above deficiencies, the present invention provides an installation structure for a heat dissipation module in a communication cabinet and a communication cabinet, aiming to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: An installation structure for a communication cabinet heat dissipation module is provided, for mounting multiple heat dissipation modules onto a cabinet door housing with multiple ventilation holes. The installation structure includes multiple mounting parts disposed on the cabinet door housing. Each ventilation hole is surrounded by four mounting mating positions formed by the mounting parts. Two mounting mating positions located at both ends of a first diagonal have insertion positioning parts, and two mounting mating positions located at both ends of a second diagonal have fixing connection parts. Two mounting parts located between two adjacent ventilation holes and on both sides of the line connecting the centers of the two ventilation holes are shared mounting parts. Each shared mounting part has a first mating part and a second mating part corresponding to the two adjacent ventilation holes. In one shared mounting part, the first mating part is the insertion positioning part and the second mating part is the fixing connection part, and in the other shared mounting part, the first mating part is the fixing connection part and the second mating part is the insertion positioning part.

[0008] Preferably, the two insertion positioning portions corresponding to the same ventilation hole are arranged symmetrically about the center of the ventilation hole, and the two fixed connection portions are arranged symmetrically about the center of the ventilation hole.

[0009] Preferably, the insertion positioning part includes a support part, a limiting part, and a stop part, the support part, the limiting part, and the stop part forming an insertion space, the insertion space having an insertion port facing away from the cabinet door housing.

[0010] Preferably, the two insertion spaces corresponding to the same ventilation hole are set independently, the opening directions of the two insertion ports are the same and both are perpendicular to the panel of the cabinet door shell, and the two corresponding parts of the heat dissipation module can be inserted into the corresponding insertion space simultaneously or sequentially in a straight line along the direction perpendicular to the panel of the cabinet door shell.

[0011] Preferably, the support portion, the limiting portion, and the stop portion abut against the corresponding parts of the heat dissipation module, respectively, and restrict the movement of the heat dissipation module along three intersecting directions.

[0012] Preferably, the heat dissipation module is provided with a positioning part and a fixing part, and the positioning part or the fixing part abuts against the stop part.

[0013] Preferably, the fixed connection part is provided with a connection hole and a gasket mounting hole. The connection hole cooperates with the connector provided on the heat dissipation module, and the gasket mounting hole is provided with a vibration damping and anti-loosening gasket.

[0014] Preferably, the first mating part and the second mating part are spaced apart on the common mounting member along the arrangement direction of the two adjacent ventilation holes, and respectively mate with the heat dissipation module corresponding to the two adjacent ventilation holes.

[0015] Preferably, the common mounting component is integrally bent from a sheet metal and includes a base, a first functional part, and a second functional part connected to the cabinet door housing. The first functional part forms the first mating part, and the second functional part forms the second mating part.

[0016] The present invention also provides a communication cabinet, including a cabinet body, a heat dissipation component hinged to the back side of the cabinet body, a cabinet door shell hinged to the back side of the heat dissipation component, and the cabinet door shell covering the outside of the heat dissipation component when closed; the cabinet door shell has multiple ventilation holes, and a heat dissipation module is installed on the outside of each ventilation hole, the multiple heat dissipation modules are arranged in parallel, and the heat dissipation modules are fixed to the cabinet door shell by the above-described mounting structure; a grid plate is provided on the side of the heat dissipation component away from the cabinet door shell, and multiple sensors are spaced apart on the grid plate; cables connected to the sensors are arranged on the inner periphery of the cabinet door shell, and the cables are fixed to the cabinet door shell by multiple cable ties.

[0017] This invention provides an installation structure for a heat dissipation module in a communication cabinet and a communication cabinet itself. It offers the following advantages: 1. In this invention, by setting four mounting positions around the ventilation hole, and setting the mounting positions at both ends of the first diagonal as insertion positioning parts and the mounting positions at both ends of the second diagonal as fixed connection parts, the heat dissipation module can be positioned first by the insertion positioning parts and then fixed by the fixed connection parts, thereby simplifying the installation process of the heat dissipation module and improving the convenience and stability of the heat dissipation module installation.

[0018] 2. In this invention, by forming a shared structure between the mounting parts of two adjacent ventilation holes, and by setting a first mating part and a second mating part on the same mounting part corresponding to two adjacent heat dissipation modules respectively, one mounting part can participate in the installation and mating of two adjacent heat dissipation modules at the same time. This reduces the number of mounting parts, improves the space utilization of the cabinet door shell, and facilitates the compact arrangement and independent disassembly and assembly of multiple heat dissipation modules.

[0019] 3. The heat dissipation module can further dissipate heat from the heat dissipation components, ensuring the heat dissipation performance and service life of the heat dissipation components. Attached Figure Description

[0020] Figure 1 This invention provides an installation structure for a heat dissipation module in a communication cabinet and a perspective view of the communication cabinet. Figure 2 This is a schematic diagram of the installation structure of a heat dissipation module for a communication cabinet and the structure of the back of the communication cabinet, as proposed in this invention. Figure 3This invention provides an installation structure for a heat dissipation module in a communication cabinet and a side view of the communication cabinet. Figure 4 This is a schematic diagram of the installation structure of a heat dissipation module for a communication cabinet and a common mounting component for a communication cabinet, as proposed in this invention. Figure 5 This is a schematic diagram illustrating the installation structure of a heat dissipation module for a communication cabinet and the cooperation between the mounting components of the communication cabinet and the vibration damping and anti-loosening pads proposed in this invention.

[0021] The components include: 1. Cabinet door shell; 2. Ventilation hole; 3. Mounting component; 4. Heat dissipation module; 5. Mounting mating position; 6. Insertion positioning part; 7. Fixed connection part; 8. First mating part; 9. Second mating part; 10. Support part; 11. Limiting part; 12. Stop part; 13. Insertion space; 14. Insertion port; 15. Connection hole; 16. Gasket mounting hole; 17. Vibration damping and anti-loosening gasket; 18. Base; 19. First functional part; 20. Second functional part; 21. Cabinet body; 22. Heat dissipation component; 23. Mesh plate; 24. Sensor; 25. Cable; 26. Cable binding component. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1, referring to Figures 1 to 3 As shown, one embodiment of the present invention provides an installation structure for a heat dissipation module of a communication cabinet, used to install multiple heat dissipation modules 4 onto the cabinet door shell 1 of the communication cabinet. The heat dissipation module 4 is, for example, a cooling fan. Multiple evenly spaced ventilation holes 2 are provided on the cabinet door shell 1. The ventilation holes 2 are, for example, circular holes, allowing the interior of the cabinet door shell 1 to communicate with the outside. The multiple ventilation holes 2 are arranged at intervals along a preset direction, such as the height direction of the cabinet door shell 1. Specifically, the installation structure of this embodiment includes multiple mounting members 3 disposed on the cabinet door shell 1. Around each ventilation hole 2, multiple mounting members 3 form four mounting mating positions 5 for mating and connecting with different parts of the heat dissipation module 4. That is, the heat dissipation module 4 has four mating portions corresponding to the mounting mating positions 5, so that the heat dissipation module 4 is fixed to the four mounting members 3. Simultaneously, the heat dissipation module 4 has an annular fitting portion that conforms to the outer surface of the cabinet door shell 1 to form excellent heat dissipation performance, preventing the heat dissipation module 4 from drawing outside air into the ventilation holes 2 when opened.

[0024] Furthermore, the heat dissipation module 4 in this embodiment has a rectangular outer cover. Several bypass holes or mesh openings are provided on two of the vertical sidewalls of the rectangular outer cover. This reduces material usage while ensuring the structural strength of the mounting component 3, and simultaneously connects the internal space of the mounting component 3 with the external space, reducing the obstruction of airflow around the heat dissipation module 4 by the mounting component 3. The remaining two horizontal sidewalls of the rectangular outer cover prevent heat transfer between adjacent rectangular outer covers, ensuring at least the heat dissipation efficiency of a single ventilation hole 2.

[0025] The mounting component 3 has internal space, and it can also fix two adjacent heat dissipation modules 4, and form a space between the two adjacent heat dissipation modules 4 to facilitate heat dissipation and prevent heat crosstalk.

[0026] The two mounting positions 5 located at the two ends of the first diagonal of the same ventilation hole 2 each have an insertion positioning part 6, and the two mounting positions 5 located at the two ends of the second diagonal each have a fixing connection part 7. Through this arrangement, two of the four mounting positions corresponding to the same heat dissipation module 4 are used for insertion positioning of the heat dissipation module 4, and two mounting positions are used for fixing the heat dissipation module 4, thus ensuring that the positioning and fixing of the heat dissipation module 4 are handled by different positions. Furthermore, the two insertion positioning parts 6 corresponding to the same ventilation hole 2 are arranged symmetrically about the center of the ventilation hole 2, and the two fixing connection parts 7 are also arranged symmetrically about the center of the ventilation hole 2, so that the force on the heat dissipation module 4 is more evenly distributed after installation.

[0027] Reference Figure 4 and Figure 5 As shown, the insertion positioning part 6 includes a support part 10, a limiting part 11 and a stop part 12. The support part 10, the limiting part 11 and the stop part 12 together form an insertion space 13 for accommodating the corresponding part of the heat dissipation module 4. The insertion space 13 has an insertion port 14 facing away from the cabinet door housing 1. Two insertion spaces 13 corresponding to the same ventilation hole 2 are independently set, and the opening directions of the two insertion ports 14 are the same. In this embodiment, both insertion ports 14 are set towards the installation direction of the heat dissipation module 4, so that the heat dissipation module 4 can be inserted into the corresponding insertion space 13 in a direction perpendicular to the surface of the cabinet door shell 1. The two corresponding parts of the heat dissipation module 4 can enter the two insertion spaces 13 simultaneously, or they can enter the two insertion spaces 13 sequentially according to the installation operation requirements, without having to rotate the heat dissipation module 4 to complete the installation. The support portion 10 is used to support the heat dissipation module 4, the limiting portion 11 is used to restrict the movement of the heat dissipation module 4 in the lateral direction, and the stop portion 12 is used to restrict the continued movement of the heat dissipation module 4 in the insertion direction. Through the cooperation between the support portion 10, the limiting portion 11, and the stop portion 12, the insertion positioning portion 6 can restrict the movement of the heat dissipation module 4 in three intersecting directions and keep the heat dissipation module 4 in a pre-installed state before final fixation.

[0028] Reference Figure 1 and Figure 4 As shown, two mounting components 3 located between two adjacent ventilation holes 2 and on either side of the line connecting the centers of the two ventilation holes 2 are shared mounting components. Each shared mounting component has a first mating part 8 and a second mating part 9 corresponding to the two adjacent ventilation holes 2 respectively. In one shared mounting component, the first mating part 8 is an insertion positioning part 6 and the second mating part 9 is a fixing connection part 7, while in the other shared mounting component, the first mating part 8 is a fixing connection part 7 and the second mating part 9 is an insertion positioning part 6. Through the above staggered configuration, the mounting component 3 located between two adjacent ventilation holes 2 can simultaneously serve two heat dissipation modules 4. Furthermore, the first mating part 8 and the second mating part 9 are spaced apart on the mounting part 3 along the arrangement direction of two adjacent ventilation holes 2, and are respectively connected to the heat dissipation module 4 at the corresponding positions. This eliminates the need for separate mounting parts 3 between adjacent heat dissipation modules 4, thereby reducing the number of mounting parts 3 and improving the space utilization on the cabinet door shell 1. At the same time, since the first mating part 8 and the second mating part 9 correspond to different heat dissipation modules 4, it is not necessary to disconnect the other heat dissipation module 4 from the mounting part 3 when disassembling any heat dissipation module 4.

[0029] Reference Figure 3 and Figure 5 As shown, the heat dissipation module 4 is provided with a positioning part and a fixing part that correspond to and cooperate with the insertion positioning part 6 and the fixing connection part 7. The positioning part or fixing part can abut against the stop part 12 to limit the insertion position of the heat dissipation module 4. The fixing connection part 7 is provided with a connection hole 15 and a gasket mounting hole 16. The connection hole 15 is used to cooperate with a connector provided on the heat dissipation module 4 to achieve a detachable connection between the heat dissipation module 4 and the cabinet door housing 1. A vibration damping and anti-loosening gasket 17 is provided at the gasket mounting hole 16. The vibration damping and anti-loosening gasket 17 is located between the fixing connection part 7 and the connector to reduce the impact of vibration generated during the operation of the heat dissipation module 4 on the connection position and improve the stability of the connection structure. Furthermore, the mounting component 3 is formed by integrally bending a sheet metal, and includes a base 18 connected to the cabinet door housing 1, a first functional part 19, and a second functional part 20. The first functional part 19 forms a first mating part 8, and the second functional part 20 forms a second mating part 9. By forming the above structure through bending a sheet metal, the number of parts can be reduced, and the overall structural consistency of the mounting component 3 can be improved.

[0030] Example 2, based on Example 1 above, with reference to Figures 1 to 3 As shown, the present invention also provides a communication cabinet, including a cabinet body 21, with a heat dissipation component 22 hinged to the back side of the cabinet body 21. The heat dissipation component 22 is used to exchange heat generated inside the communication cabinet. It can be configured with different forms of heat exchange structure according to actual usage requirements, such as a pipe heat exchanger, a plate heat exchanger, or other heat dissipation structures with heat exchange function. In this embodiment, the heat dissipation component 22 adopts a pipe heat exchanger, which includes multiple heat exchange pipes arranged in a preset direction to increase the heat exchange area and realize heat exchange with the air inside the communication cabinet. A cabinet door shell 1 is hinged to the back side of the heat dissipation component 22, so that the cabinet door shell 1 covers the outside of the heat dissipation component 22 when closed. The double-layer hinge allows the cabinet door shell 1 to be opened independently or the heat dissipation component 22 to be opened together. The cabinet door shell 1 is provided with multiple ventilation holes 2, and a heat dissipation module 4 is installed on the outside of each ventilation hole 2. The multiple heat dissipation modules 4 are arranged in parallel along the arrangement direction of the cabinet door shell 1 and fixed to the cabinet door shell 1 by the above-mentioned communication cabinet heat dissipation module installation structure. A grid plate 23 is provided on the side of the heat dissipation component 22 away from the cabinet door housing 1. Multiple sensors 24 are spaced on the grid plate 23 to detect the temperature parameters inside or around the communication cabinet and to provide feedback data for high-heat areas to adjust the power of each heat dissipation module 4. Cables 25 connected to the sensors 24 are arranged on the inner periphery of the cabinet door housing 1. The cables 25 are fixed to the cabinet door housing 1 by multiple cable ties 26 to keep the cables 25 neatly arranged and facilitate subsequent maintenance.

[0031] The working principle is as follows: When installing the heat dissipation module 4, it is positioned corresponding to the ventilation holes 2 on the cabinet door shell 1, so that the two corresponding parts of the heat dissipation module 4 correspond to the insertion positioning parts 6 located at both ends of the first diagonal of the ventilation holes 2. During installation, the corresponding parts of the heat dissipation module 4 are inserted into the insertion space 13 formed by the insertion positioning parts 6 in the direction towards the cabinet door shell 1. The support part 10, the limiting part 11, and the stop part 12 support and limit the heat dissipation module 4, keeping it in the pre-installation position before fixing. Subsequently, the fixed connection parts 7 located at both ends of the second diagonal are connected to the connectors on the heat dissipation module 4 to achieve the fixed installation of the heat dissipation module 4 and the cabinet door shell 1. Among them, the common mounting parts between two adjacent ventilation holes 2 correspond to two adjacent heat dissipation modules 4. The insertion positioning part 6 and the fixed connection part 7 are formed by the first mating part 8 and the second mating part 9, respectively, thereby reducing the number of mounting parts and achieving a compact arrangement of multiple heat dissipation modules 4. During operation of the communication cabinet, multiple heat dissipation modules 4 installed on the cabinet door shell 1 correspond to multiple ventilation holes 2. The operation of the heat dissipation modules 4 facilitates the exchange of air between the inside and outside of the cabinet, thereby achieving heat dissipation inside the cabinet. Multiple sensors 24 are installed on the grid plate 23 on one side of the heat dissipation component 22 to detect relevant environmental parameters. The cables 25 connected to the sensors 24 are laid along the inner periphery of the cabinet door shell 1 and secured with cable ties 26 to ensure orderly installation and reliable connection of the cables 25. This structure allows for quick installation and removal of the heat dissipation modules 4, while ensuring the stability and ease of maintenance of the internal heat dissipation structure of the communication cabinet.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An installation structure for a communication cabinet heat dissipation module, used to install multiple heat dissipation modules (4) onto a cabinet door shell (1) having multiple ventilation holes (2), characterized in that, The mounting structure includes a plurality of mounting parts (3) disposed on the cabinet door housing (1), and four mounting mating positions (5) are formed around each ventilation hole (2) by the mounting parts (3); The two mounting positions (5) located at both ends of the first diagonal each have an insertion positioning part (6), and the two mounting positions (5) located at both ends of the second diagonal each have a fixing connection part (7). The two mounting parts (3) between two adjacent ventilation holes (2) and located on both sides of the line connecting the centers of the two ventilation holes (2) are common mounting parts. Each of the common mounting parts has a first mating part (8) and a second mating part (9) corresponding to the two adjacent ventilation holes (2). In one of the common mounting components, the first mating part (8) is the insertion positioning part (6) and the second mating part (9) is the fixed connection part (7). In the other common mounting component, the first mating part (8) is the fixed connection part (7) and the second mating part (9) is the insertion positioning part (6).

2. The installation structure of the communication cabinet heat dissipation module according to claim 1, characterized in that, The two insertion positioning parts (6) corresponding to the same ventilation hole (2) are arranged symmetrically about the center of the ventilation hole (2), and the two fixed connection parts (7) are arranged symmetrically about the center of the ventilation hole (2).

3. The installation structure of the communication cabinet heat dissipation module according to claim 1, characterized in that, The insertion positioning part (6) includes a support part (10), a limiting part (11) and a stop part (12). The support part (10), the limiting part (11) and the stop part (12) form an insertion space (13). The insertion space (13) has an insertion port (14) facing away from the cabinet door housing (1).

4. The installation structure of the communication cabinet heat dissipation module according to claim 3, characterized in that, The two insertion spaces (13) corresponding to the same ventilation hole (2) are set independently to each other. The opening directions of the two insertion ports (14) are the same and both are perpendicular to the plate surface of the cabinet door housing (1). The two corresponding parts of the heat dissipation module (4) can be inserted into the corresponding insertion space (13) simultaneously or sequentially in a straight line along the direction perpendicular to the plate surface of the cabinet door housing (1).

5. The installation structure of the communication cabinet heat dissipation module according to claim 3, characterized in that, The support part (10), the limiting part (11) and the stop part (12) respectively abut against the corresponding parts of the heat dissipation module (4) and respectively restrict the movement of the heat dissipation module (4) along three intersecting directions.

6. The installation structure of the communication cabinet heat dissipation module according to claim 3, characterized in that, The heat dissipation module (4) is provided with a positioning part and a fixing part, and the positioning part or the fixing part abuts against the stop part (12).

7. The installation structure of the communication cabinet heat dissipation module according to claim 1, characterized in that, The fixed connection part (7) is provided with a connection hole (15) and a gasket mounting hole (16). The connection hole (15) cooperates with the connector provided on the heat dissipation module (4), and the gasket mounting hole (16) is provided with a vibration damping and anti-loosening gasket (17).

8. The installation structure of the communication cabinet heat dissipation module according to claim 1, characterized in that, The first mating part (8) and the second mating part (9) are spaced apart on the common mounting part along the arrangement direction of the two adjacent ventilation holes (2), and respectively mate with the heat dissipation module (4) corresponding to the two adjacent ventilation holes (2).

9. The installation structure of the communication cabinet heat dissipation module according to claim 1, characterized in that, The common mounting component is formed by bending a sheet metal integrally, including a base (18), a first functional part (19), and a second functional part (20) connected to the cabinet door housing (1). The first functional part (19) forms the first mating part (8), and the second functional part (20) forms the second mating part (9).

10. A communication cabinet, comprising a cabinet body (21), wherein a heat dissipation component (22) is hinged to the rear side of the cabinet body (21), characterized in that, The heat dissipation component (22) is hinged to the back side of the cabinet door shell (1), and the cabinet door shell (1) covers the outside of the heat dissipation component (22) when closed. The cabinet door housing (1) is provided with a plurality of ventilation holes (2), and a heat dissipation module (4) is installed on the outside of each ventilation hole (2). The plurality of heat dissipation modules (4) are arranged in parallel, and the heat dissipation module (4) is fixed to the cabinet door housing (1) by the installation structure described in any one of claims 1-9. The heat dissipation component (22) has a grid plate (23) on the side away from the cabinet door housing (1), and multiple sensors (24) are spaced apart on the grid plate (23). The inner periphery of the cabinet door housing (1) is provided with a cable (25) connected to the sensor (24), and the cable (25) is fixed to the cabinet door housing (1) by a plurality of wire binding pieces (26).

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