Dust-proof protection structure, router, and heat dissipation protection method of router

Abstract

The invention relates to the field of routers, and discloses a dustproof protection structure, a router and a heat dissipation protection method for the router. The dustproof protection structure is applied to the router, and the router has a bottom shell and a heat dissipation hole structure formed on the bottom shell. The dustproof protection structure comprises a knocking assembly and a first driving assembly. The knocking assembly comprises a knocking seat and an elastic knocking piece. The knocking seat is arranged on the bottom shell and is formed with a guide portion located above the heat dissipation hole structure. The elastic knocking piece is movably connected to the guide portion along the up-down direction. The first driving assembly is connected to the elastic knocking piece and can drive the elastic knocking piece to reciprocate along the up-down direction, so that the elastic knocking piece knocks the heat dissipation hole structure, thereby reducing the difficulty of cleaning the heat dissipation hole structure and providing convenience for users.

Description

Technical Field

[0001] The present invention relates to the technical field of routers, and in particular to a dustproof protection structure, a router and a heat dissipation protection method for the router. Background Art

[0002] At present, routers have been widely used in all walks of life. Routers are devices that connect local area networks and wide area networks in the Internet. They will automatically select and set routes according to the channel conditions, and send signals in a forward and backward order via the best path.

[0003] Due to the heat dissipation requirements of the router, most of them will be equipped with heat dissipation holes at the bottom of the router to enhance the heat dissipation function of the router. However, the location of the heat dissipation holes at the bottom determines that the dust accumulated on the heat dissipation holes and the dustproof net is invisible, and it is difficult to find and clean manually. When used for a long time, dust is easy to accumulate in the heat dissipation holes, which will affect the heat dissipation performance of the router, and then cause the router to have abnormal use due to insufficient heat dissipation. Summary of the invention

[0004] The main purpose of the present invention is to provide a dustproof protection structure, aiming to realize convenient cleaning of dust at the heat dissipation holes.

[0005] To achieve the above object, the dustproof protection structure proposed in the present invention is applied to a router, wherein the router has a bottom shell and a heat dissipation hole structure formed on the bottom shell, and the dustproof protection structure includes:

[0006] A knocking assembly, the knocking assembly comprising a knocking seat and an elastic knocking piece, the knocking seat being arranged on the bottom shell and forming a guide portion located above the heat dissipation hole structure, the elastic knocking piece being movably connected to the guide portion along a vertical direction; and

[0007] A first driving component is connected to the elastic knocking member and can drive the elastic knocking member to reciprocate in an up-and-down direction so that the elastic knocking member knocks the heat dissipation hole structure.

[0008] Optionally, the elastic knocking member includes a body section and an elastic knocking section, and the knocking assembly further includes a pressure sensor;

[0009] The body section is connected to the first driving component, the elastic knocking section is connected to an end of the body section away from the first driving component, and the pressure sensor is arranged between the body section and the elastic knocking section and is electrically connected to the first driving component.

[0010] Optionally, the dustproof protection structure further includes a timing module;

[0011] The timing module is disposed on the bottom shell and is electrically connected to the first driving component. The timing module is used to determine the working duration and working interval duration of the first driving component.

[0012] Optionally, the dust protection structure further includes a dust collecting member;

[0013] The integrated component is arranged on the bottom shell and is located below the heat dissipation hole structure, and the downward projection of the heat dissipation hole structure is located within the range of the dust collecting component.

[0014] Optionally, the dustproof protection structure further includes a second driving assembly, and the bottom shell is provided with a guide slot;

[0015] The dust collecting piece is movably connected to the guide slot, and has a dust collecting position directly opposite to the heat dissipation hole in the up and down directions, and a dust cleaning position partially exposed from one side of the bottom shell; the second driving component is connected to the dust collecting piece and can drive the dust collecting piece to move from the dust collecting position to the dust cleaning position or from the dust cleaning position to the dust collecting position.

[0016] The present invention also provides a router, comprising:

[0017] A bottom shell, wherein the bottom shell is formed with a heat dissipation hole structure and a support portion protruding outward;

[0018] A peripheral shell, the peripheral shell is connected to the bottom shell and enclosed with the bottom shell to form a mounting cavity;

[0019] a functional device, wherein the functional device is disposed in the mounting cavity; and

[0020] The above-mentioned dustproof protection structure is arranged on the bottom shell and located in the installation cavity.

[0021] Optionally, the router further includes a cooling fan and a temperature sensor;

[0022] The heat dissipation fan is arranged on the bottom shell and forms a heat dissipation air duct toward the installation cavity. The functional device is located in the heat dissipation air duct. The temperature sensor is arranged on the functional device and is electrically connected to the heat dissipation fan.

[0023] The present invention also provides a heat dissipation protection method for a router, the heat dissipation protection method for the router comprising the following steps:

[0024] Acquire a first temperature value and a second temperature value of a temperature sensor;

[0025] Selecting the larger one of the first temperature value and the second temperature value as the high-value temperature, and calculating the difference between the first temperature value and the second temperature value to determine the actual temperature growth rate;

[0026] A protection strategy is determined according to the high-value temperature or the actual temperature growth rate.

[0027] Optionally, the step of determining a protection strategy according to the high-value temperature or the actual temperature growth rate includes:

[0028] When the high temperature is greater than the preset temperature, the cooling fan of the router is started and a first-level alarm is determined.

[0029] Optionally, the step of determining a protection strategy according to the high-value temperature or the actual temperature growth rate includes:

[0030] When the actual temperature growth rate is greater than the preset temperature growth rate, the first driving component is started and a level 2 alarm is determined.

[0031] In the technical solution of the present invention, a knocking component is provided on the bottom shell of the router, and an elastic knocking piece of the knocking component is driven by a first driving component to reciprocate above the heat dissipation hole structure. When the elastic knocking piece moves downward to a certain extent, it can contact the heat dissipation hole structure to knock on the heat dissipation hole structure, so that the heat dissipation hole structure vibrates and shakes off the originally accumulated dust. In this way, the user only needs to clean the dust that has been shaken off, which reduces the difficulty of cleaning the heat dissipation hole structure and provides convenience for the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0033] Figure 1 A schematic structural diagram of an embodiment of the dustproof protection structure provided by the present invention;

[0034] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0035] Figure 3 A schematic diagram of the structure of the router provided by the present invention;

[0036] Figure 4 A schematic diagram of a first implementation flow of the heat dissipation protection method for a router provided by the present invention;

[0037] Figure 5 This is a schematic diagram of a second implementation flow of the heat dissipation protection method for a router provided by the present invention.

[0038] Description of Figure Numbers:

[0039]

[0040]

[0041] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0044] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0045] The present invention provides a dust protection structure 300. Figure 1 to Figure 2 This is an embodiment of the present invention.

[0046] In the embodiment of the present invention, the dust protection structure 300 is as follows: Figure 1 to Figure 2As shown, it is applied to a router 1000, and the router 1000 has a bottom shell 100 and a heat dissipation hole structure 101 formed on the bottom shell 100. The dustproof protection structure 300 includes a knocking component 1 and a first driving component. The knocking component 1 includes a knocking seat 11 and an elastic knocking piece 12. The knocking seat 11 is arranged on the bottom shell 100 and is formed with a guide portion 111 located above the heat dissipation hole structure 101. The elastic knocking piece 12 is movably connected to the guide portion 111 along the up-down direction. The first driving component is connected to the elastic knocking piece 12 and can drive the elastic knocking piece 12 to reciprocate along the up-down direction so that the elastic knocking piece 12 knocks the heat dissipation hole structure 101.

[0047] In the technical solution of the present invention, a knocking component 1 is provided on the bottom shell 100 of the router 1000, and the elastic knocking member 12 of the knocking component 1 is driven by the first driving component to reciprocate above the heat dissipation hole structure 101. When the elastic knocking member 12 moves downward to a certain extent, it can contact the heat dissipation hole structure 101 to knock the heat dissipation hole structure 101, so that the heat dissipation hole structure 101 vibrates and shakes off the originally accumulated dust. In this way, the user only needs to clean the dust that has been shaken off, which reduces the difficulty of cleaning the heat dissipation hole structure 101 and provides convenience for the user.

[0048] In order to prevent frequent knocking from causing damage to the heat dissipation hole structure 101, in one embodiment, the elastic knocking piece 12 includes a main body section 121 and a knocking section, the main body section 121 is connected to the first driving component, and the elastic knocking section 122 is connected to the end of the main body section 121 away from the first driving component and is used to elastically abut against the heat dissipation hole structure 101. Under the drive of the first driving component, the elastic knocking section 122 moves downward and elastically knocks the heat dissipation hole structure 101, and the contact section between the elastic knocking piece 12 and the heat dissipation hole structure 101 is set to have an elastic structure. On the one hand, it can prevent the two from making hard contact during the knocking process and damaging the heat dissipation hole structure 101. On the other hand, the elastic knocking section 122 can enhance the vibration generated when knocking the heat dissipation hole structure 101, thereby enhancing the effect of shaking off dust on the heat dissipation hole structure 101.

[0049] In order to prevent the first driving component from continuously applying force after the elastic knocking member 12 contacts the heat dissipation hole structure 101, thereby causing damage to the heat dissipation hole structure 101, the knocking component 1 also includes a pressure sensor, which is arranged between the body section 121 and the elastic knocking section 122 and is electrically connected to the first driving component. Then, when knocking occurs, the pressure value detected by the pressure sensor will change. At this time, the pressure sensor sends an electrical signal to the control end, and the control end controls the first driving component to drive in reverse, that is, the first driving component drives the elastic knocking member 12 to move back to the heat dissipation hole structure 101, so as to realize the activity reset of the elastic knocking member 12 after a single knocking is completed. Further, in order to enable the first driving component to continuously drive the elastic knocking member 12 to reciprocate, a second pressure sensor can be arranged between the body section 121 and the first driving component. When the elastic knocking member 12 is reset to a certain extent, the second sensor is subjected to the pressure of the contact between the body section 121 and the first driving component. At this time, the first driving component is controlled to change the driving direction again, and then the next knocking process is continued.

[0050] Specifically, the first driving assembly may include a motor and a screw mechanism, and the main body section 121 is arranged on the nut of the screw mechanism. The reciprocating motion of the elastic knocking member 12 is achieved by changing the rotation direction of the output shaft of the motor to achieve continuous multiple knocking.

[0051] In this embodiment, the main body section 121 of the elastic knocking member 12 is provided with an opening at one end facing away from the elastic knocking section 122. Although the specific installation position of the first drive component is not directly illustrated, an installation position is provided here when the first drive component includes a motor and a screw mechanism. The output shaft of the motor is connected to the screw of the screw mechanism, and the screw extends into the opening of the main body section 121 and is connected to the main body section 121 through a nut. The opening is used for the installation of the avoidance screw. The motor is mounted on the knocking seat 11, and its output shaft extends downward and is connected to the screw. The connection point can also be located in the main body section 121.

[0052] Even if measures such as preventing hard contact are taken, damage may occur if the heat dissipation hole structure 101 is subjected to long-term continuous knocking. Since dust cleaning does not need to be performed all the time, dust accumulation requires time. To adapt to this feature, in one embodiment, the dustproof protection structure 300 also includes a timing module, which is arranged on the bottom shell 100 and electrically connected to the first drive component. The timing module is used to determine the working time and working interval of the first drive component, that is, the interval time for starting the first drive component can be manually set, such as starting once a week or once a month, and each startup lasting five minutes. Due to the different usage environments of the router 1000, the dust accumulation speed of the heat dissipation hole structure 101 is also different, which can be set specifically according to actual conditions.

[0053] In order to collect the knocked-off dust and prevent the dust from escaping and polluting the surrounding environment of the router, in one embodiment, the dust-proof protection structure 300 also includes a dust collecting piece, which is arranged on the bottom shell 100 and below the heat dissipation hole structure 101. The downward projection of the heat dissipation hole structure 101 is within the range of the dust collecting piece, that is, the dust collecting piece can completely collect the dust on the heat dissipation hole structure 101 when it is shaken off, thereby preventing the dust from being shaken off into the environment.

[0054] To facilitate the user to clean the dust in the dust collecting piece, in one embodiment, the dust-proof protection structure 300 also includes a second driving piece, the bottom shell 100 is provided with a guide slide, the dust collecting piece is movably connected to the guide slide, the guide slide provides limitation and guidance for the movement of the dust collecting piece, the dust collecting piece has an integrated position directly opposite to the heat dissipation hole structure 101 in the up and down direction and a cleaning position partially exposed from one side of the bottom shell, the second driving component is connected to the dust collecting piece and can drive the dust collecting piece to move from the dust collecting position to the cleaning position or from the cleaning position to the dust collecting position. In the initial state, the dust collecting piece is located at the dust collecting position and is used to collect dust shaken off from the heat dissipation hole structure. When it is necessary to clean the dust in the dust collecting piece, the dust collecting piece is driven from the dust collecting position to the cleaning position by the second driving component, so that the dust in the dust collecting piece can be further cleaned out. After cleaning, the dust collecting piece is driven back to the dust collecting position by the second driving component.

[0055] The present invention also provides a router 1000, which can be referred to Figure 3The router 1000 includes a bottom shell 100, a peripheral shell 200, functional devices, and the dustproof protection structure 300. The bottom shell 100 is formed with a heat dissipation hole structure 101 and a support portion 102 protruding outward. The support portion 102 is used to support the router 1000 and make the heat dissipation hole structure 101 have a certain distance from the installation surface to ensure the heat dissipation effect of the heat dissipation hole structure 101. The peripheral shell 200 is connected to the bottom shell 100 and encloses the bottom shell 100 to form an installation cavity. The functional device is arranged in the installation cavity to realize the basic functions of the router 1000. The dustproof protection structure 300 is arranged on the bottom shell 100 and located in the installation cavity. The specific structure of the dustproof protection structure 300 refers to the above embodiment. Since the router 1000 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0056] When the output power of the functional device is high, the heat will be more obvious. In order to meet the heat dissipation requirements under high power output, in one embodiment, the router 1000 also includes a heat dissipation fan, which is arranged on the bottom shell 100 and forms a heat dissipation duct facing the installation cavity. The functional device is located in the heat dissipation duct, so that the heat dissipation effect of the router 1000 is further enhanced by installing a heat dissipation fan on the bottom shell 100 of the router 1000, ensuring that it can dissipate heat in time under high power output conditions, preventing the functional device from triggering overheating protection and automatically shutting down, and reducing potential risks for users during use.

[0057] In order to reduce the energy consumption of the cooling fan and avoid energy waste, in one embodiment, the router 1000 also includes a temperature sensor, which is arranged on the functional device and electrically connected to the cooling fan. The temperature sensor is used to detect the temperature of the functional device. When the temperature of the functional device exceeds a certain preset value, the temperature sensor controls the cooling fan to turn on, thereby strengthening the heat dissipation of the functional device and ensuring the normal use of the router 1000. Through the temperature sensor, the cooling fan is automatically turned on as needed, thereby avoiding energy waste caused by the continuous operation of the cooling fan when the temperature of the functional device is not high.

[0058] The present invention also provides a heat dissipation protection method for the router 1000, such as Figure 4 and Figure 5 As shown, the heat dissipation protection method of the router 1000 includes the following steps:

[0059] S1: Acquire a first temperature value and a second temperature value of a temperature sensor;

[0060] S2: selecting the larger one of the first temperature value and the second temperature value as the high temperature, and calculating the difference between the first temperature value and the second temperature value to determine the actual temperature growth rate;

[0061] S3: Determine a protection strategy according to the high temperature or the actual temperature growth rate.

[0062] The two instantaneous temperatures of the functional device obtained by the temperature sensor are the first temperature value and the second temperature value, respectively. The time interval between the first temperature value and the second temperature value can be determined artificially. The actual temperature growth rate is the temperature increase speed of the functional device. The larger the value, the faster the temperature increases. The protection strategy is determined by the high temperature and the actual temperature growth rate, and it can help to determine the reason why the temperature of the functional device of the router 1000 is too high to a certain extent.

[0063] To determine a specific protection strategy, step S3 includes:

[0064] S31: When the high temperature is greater than a preset temperature, the cooling fan of the router 1000 is started and a first-level alarm is determined.

[0065] When the high value temperature is greater than the preset temperature, it means that the temperature of the functional device at present or at a recent point in time exceeds the preset safety temperature, and the preset temperature is lower than the temperature of the high temperature tripping protection of the functional device, that is, before the functional device automatically trips due to high temperature, the cooling fan of the router 1000 will be started, and the cooling of the functional device will be enhanced by the cooling fan. At the same time, it is determined as a first-level alarm. The occurrence of a first-level alarm indicates that the temperature of the current functional device is at a relatively high state.

[0066] To determine a specific protection strategy, step S3 further includes:

[0067] S32: When the actual temperature growth rate is greater than the preset temperature growth rate, the first driving component is started and determined as a level 2 alarm.

[0068] When the actual temperature growth rate is greater than the preset temperature growth rate, it indicates that the heating efficiency of the energy supply device is at a relatively high level at present or at a recent time, resulting in an irregular increase in temperature at a rate greater than the preset temperature growth rate. At this time, the first drive component will be started, and the first drive component will drive the elastic knocking member 12 to knock on the heat dissipation hole structure 101 for cleaning, thereby ensuring normal heat dissipation of the router 1000.

[0069] This method analyzes the causes of abnormal temperature of functional components of router 1000:

[0070] When only the first level alarm occurs, it means that the heat dissipation function of the router 1000 is normal, but the heating efficiency of the functional device is higher than the heat dissipation efficiency, resulting in the temperature of the functional device continuing to rise, while the router 1000 works relatively stably and generally does not work abnormally. The cause of the high temperature is considered to be that the router 1000 has been working for a long time, the cache has been accumulated, and has not been cleaned up, resulting in the heating efficiency being higher than the heat dissipation efficiency of the heat dissipation hole structure 101 under normal circumstances, causing the temperature to continue to rise and eventually exceed the preset temperature. Therefore, when a first level alarm occurs, the user should restart the router 1000 in time when free to clean up the router 1000 cache.

[0071] When only the second-level alarm occurs, it means that the heating of the functional device is normal, but the heat dissipation function is abnormal, and the dust accumulation process of the heat dissipation hole structure 101 is continuous. When the dust accumulation is serious, the temperature in the installation cavity cannot be dissipated in time, resulting in the working environment temperature of the functional device to increase. The functional device is constantly generating heat, which often causes its temperature to rise faster. As the degree of dust accumulation increases, the temperature growth rate of the functional device will continue to increase. Therefore, this problem is solved by driving the elastic knocking member 12 to vibrate and clean the heat dissipation hole structure 101.

[0072] If the second-level alarm is not resolved for a long time, a first-level alarm will definitely occur.

[0073] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A dustproof protection structure, applied to a router, the router having a bottom shell and a heat dissipation hole structure formed on the bottom shell, characterized in that: The dustproof protection structure comprises: A knocking assembly, the knocking assembly comprising a knocking seat and an elastic knocking piece, the knocking seat being arranged on the bottom shell and forming a guide portion located above the heat dissipation hole structure, the elastic knocking piece being movably connected to the guide portion along a vertical direction; and a first driving component, the first driving component is connected to the elastic knocking member and can drive the elastic knocking member to reciprocate in the up-down direction so that the elastic knocking member knocks the heat dissipation hole structure; The elastic knocking member includes a body section and an elastic knocking section, and the knocking assembly also includes two pressure sensors; The body section is connected to the first driving assembly, the elastic knocking section is connected to an end of the body section away from the first driving assembly, and the pressure sensor is arranged between the body section and the elastic knocking section and is electrically connected to the first driving assembly; The body section is connected to the first driving assembly, the elastic knocking section is connected to an end of the body section away from the first driving assembly, the first pressure sensor is arranged between the body section and the elastic knocking section and is electrically connected to the first driving assembly, and the second pressure sensor is arranged between the body section and the first driving assembly and is electrically connected to the first driving assembly; When a knock occurs, the first pressure sensor is used to control the first driving component to drive the elastic knocking member to move back to the heat dissipation hole structure and reset. When the elastic knocking member is reset to a certain extent, the second pressure sensor is used to control the first driving component to move toward the heat dissipation hole structure and then continue the next knocking process; The dust protection structure also includes a dust collecting member; The dust collecting member is arranged on the bottom shell and is located below the heat dissipation hole structure, and the downward projection of the heat dissipation hole structure is located within the range of the dust collecting member; The dustproof protection structure further includes a second driving assembly, and the bottom shell is provided with a guide slot; The dust collecting piece is movably connected to the guide slot, and has a dust collecting position directly opposite to the heat dissipation hole in the up and down directions, and a dust cleaning position partially exposed from one side of the bottom shell; the second driving component is connected to the dust collecting piece and can drive the dust collecting piece to move from the dust collecting position to the dust cleaning position or from the dust cleaning position to the dust collecting position.

2. The dust protection structure according to claim 1, characterized in that: The dustproof protection structure also includes a timing module; The timing module is disposed on the bottom shell and is electrically connected to the first driving component. The timing module is used to determine the working duration and working interval duration of the first driving component.

3. A router, characterized in that: include: A bottom shell, wherein the bottom shell is formed with a heat dissipation hole structure and a support portion protruding outward; A peripheral shell, the peripheral shell is connected to the bottom shell and enclosed with the bottom shell to form a mounting cavity; A functional device, wherein the functional device is arranged in the installation cavity; as well as The dustproof protection structure according to any one of claims 1 to 2, wherein the dustproof protection structure is arranged on the bottom shell and is located in the installation cavity.

4. The router according to claim 3, characterized in that: The router also includes a cooling fan and a temperature sensor; The heat dissipation fan is arranged on the bottom shell and forms a heat dissipation air duct toward the installation cavity. The functional device is located in the heat dissipation air duct. The temperature sensor is arranged on the functional device and is electrically connected to the heat dissipation fan.

5. A heat dissipation protection method for a router according to claim 4, characterized in that: The heat dissipation protection method of the router comprises the following steps: Acquire a first temperature value and a second temperature value of a temperature sensor; Selecting the larger one of the first temperature value and the second temperature value as the high-value temperature, and calculating the difference between the first temperature value and the second temperature value to determine the actual temperature growth rate; A protection strategy is determined according to the high-value temperature or the actual temperature growth rate.

6. The heat dissipation protection method for a router according to claim 5, characterized in that: The step of determining a protection strategy according to the high-value temperature or the actual temperature growth rate includes: When the high temperature is greater than the preset temperature, the cooling fan of the router is started and a first-level alarm is determined.

7. The heat dissipation protection method for a router according to claim 5, characterized in that: The step of determining a protection strategy according to the high-value temperature or the actual temperature growth rate includes: When the actual temperature growth rate is greater than the preset temperature growth rate, the first driving component is started and a level 2 alarm is determined.

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