CN212590792U - Protective device - Google Patents

Abstract

The utility model relates to a protection device, which is used in cooperation with electronic equipment, the electronic equipment is contained in the protection device, the protection device comprises a shell wall and a bulge, the bulge is connected with the shell wall, one end of the bulge is connected with the shell wall, and the other end of the bulge extends to a direction far away from the shell wall; when the protection device is placed on a plane, the convex part is contacted with the placing plane, and the shell wall is away from the placing plane by a set distance. The heat dissipation of the electronic equipment can be facilitated.

Description

Protective device

Technical Field

The utility model belongs to the technical field of the electronic equipment accessory, concretely relates to protection device.

Background

The existing electronic equipment accommodated in the protection device is inconvenient to dissipate heat.

Disclosure of Invention

The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide a protection device.

The utility model provides a technical scheme that its technical problem adopted is: a protective device for use with an electronic device, the electronic device being housed within the protective device, comprising a housing wall and a boss connected to the housing wall, the boss being connected at one end to the housing wall and extending a projection at the other end in a direction away from the housing wall; when the protection device is placed on a plane, the convex part is contacted with the placing plane, and the shell wall is away from the placing plane by a set distance.

Preferably, the housing wall comprises a housing rear wall; the boss comprises a first boss; the first bulge is arranged on the rear wall of the shell, the connecting end of the first bulge is connected with the outer surface of the rear wall of the shell, and the extending end extends and bulges in the direction far away from the outer surface of the rear wall of the shell; when the protection device is placed on a plane, the first protruding portion is in contact with the placing plane, and the outer surface of the rear wall of the shell is away from the placing plane by a set distance.

Preferably, the first protrusion includes a truncated pyramid shape, and the cross-sectional area of the first protrusion gradually decreases from the connecting end to the extending end.

Preferably, the first protrusion is in a quadrangular frustum pyramid shape, and the bottom angle between the bottom surface and the side surface is 30-60 degrees.

Preferably, the housing wall comprises a housing side wall, the housing side wall comprises a housing side wall front end face and a housing side wall outer surface; the boss comprises a second boss; the second bulge is arranged on the front end face of the side wall of the shell, one end of the second bulge is connected with the front end face of the side wall of the shell, and the other end of the second bulge extends and bulges in the direction far away from the front end face of the side wall of the shell; when the protection device is placed on a plane, the second protruding portion is in contact with the placing plane, and the end face of the front end of the side wall of the shell is a set distance away from the placing plane.

Preferably, the shell side wall is provided with an expanding portion, one end of the expanding portion is connected with the outer surface of the shell side wall, the other end of the expanding portion extends in a direction away from the outer surface of the shell side wall in an expanding mode, the expanding portion is capable of increasing the area of the front end face of the shell side wall at the position where the expanding portion is arranged, and the protruding portion is connected with the front end face of the shell side wall at the position where the expanding portion is arranged.

Preferably, the protection device further comprises a power supply assembly, a control assembly and a disinfection lamp; the shell is used for accommodating electronic equipment and fixing the power supply assembly, the control assembly and the disinfection lamp, and the power supply assembly, the control assembly and the disinfection lamp are electrically connected to form a protection circuit; the power supply assembly supplies power to the protection circuit; the control assembly is used for controlling the disinfection lamp to be turned on or turned off so as to realize irradiation disinfection on the protection device and the electronic equipment accommodated in the protection device; the bulge has been seted up the mounting hole, and the sterilamp is installed in the bulge.

Preferably, the power supply assembly is an interface converter, the interface converter can be electrically connected with a charging interface of the electronic equipment, the electronic equipment is used as a power supply, the electronic equipment is used for getting power, and the power is supplied to the protection circuit; when the electronic equipment is accommodated in the protection device, the interface converter is electrically connected with the electronic equipment.

Preferably, the interface converter comprises a convex interface and a concave interface, and the convex interface is electrically connected with the concave interface; the raised interface is arranged on the inner surface of the shell, and when the electronic equipment is accommodated in the shell, the raised interface is in plug-in fit with the charging interface of the electronic equipment so as to realize the electric connection between the raised interface and the charging interface of the electronic equipment; the groove interface is arranged on the outer surface of the shell and can be electrically connected with the charging wire, so that an external power supply can charge the electronic equipment through the charging wire, the groove interface and the protrusion interface; the control component is electrically connected with the convex interface or respectively electrically connected with the convex interface and the groove interface.

Preferably, the control assembly comprises a combination of mechanical switches, sensors and processors and timers.

The beneficial effects of the utility model reside in that:

1. the protection device is provided with the protruding part, so that heat dissipation of the electronic equipment can be facilitated.

2. The bulge is in a frustum pyramid shape, so that a user can conveniently tilt the electronic equipment to watch videos.

3. The sterilizing lamp is arranged on the convex part, and the structure is simple.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work according to the drawings:

fig. 1a is a schematic perspective view of a housing of a protection device provided by the present invention.

Fig. 1b is a schematic front view of the side wall of the housing of the protection device according to the present invention.

Fig. 1c is a schematic perspective view of a protruding edge of the protection device provided by the present invention.

Fig. 1d is a schematic perspective view of the protruding portion of the protection device provided by the present invention.

Fig. 1e is a schematic front view of the protruding portion and the expanding portion of the protection device provided by the present invention.

Fig. 1f is a schematic side view of the protruding portion and the expanding portion of the protection device provided by the present invention.

Fig. 2a is a schematic front view of the protection device provided by the present invention.

Fig. 2b is a schematic perspective view of the protection device provided by the present invention.

Fig. 3 is a schematic perspective view of the interface converter of the protection device provided by the present invention.

Description of the drawings: 10. a protection device; 20. a housing; 21. a housing sidewall; 211. a first side wall; 212. a top wall; 213. a second side wall; 214. a bottom wall; 215. a convex edge; 216. an expansion section; 22. a housing rear wall; 23. a boss portion; 231. mounting holes; 30. an interface converter; 31. a raised interface; 32. a groove interface; 40. a sterilizing light.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all the embodiments of the present invention. The embodiments in the present application may be combined as appropriate. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

A protective device is used in cooperation with electronic equipment, and the electronic equipment is accommodated in the protective device to be protected by the protective device. In this embodiment, the electronic device is a mobile phone or a tablet, and the protection device is a mobile phone protection shell or a tablet protection shell.

Referring to fig. 1a to 1c, the protection device 10 includes a housing 20, and the housing 20 is used for accommodating the protection device. Casing 20 includes casing lateral wall 21 and casing back wall 22, and casing lateral wall 21 is connected with casing back wall 22 (the one end that casing lateral wall 21 is connected with casing back wall 22, for casing lateral wall rear end, the one end that casing lateral wall 21 kept away from casing back wall 22 is the casing lateral wall front end), and casing lateral wall 21 encloses with casing back wall 22 and establishes the formation one side and has the open-ended cuboid (casing lateral wall 21 is casing lateral wall internal surface towards open-ended side, and casing lateral wall 21 deviates from open-ended side and is casing lateral wall surface). The inner surface of the side wall of the shell is provided with a convex edge 215 extending towards the opening, and one surface of the convex edge 215 departing from the back wall 22 of the shell is in the same plane with the plane of the front end of the side wall of the shell (the front end surface of the side wall of the shell). Specifically, the housing sidewall 21 includes a first sidewall 211, a top wall 212, a second sidewall 213, and a bottom wall 214, and the first sidewall 211, the top wall 212, the second sidewall 213, and the bottom wall 214 are sequentially connected to form the housing sidewall 21. The first sidewall 211, the second sidewall 213 and the top wall 212 are provided with a ledge 215. The first sidewall 211 is provided with a convex edge 215, one end of which is connected with the inner surface of the first sidewall, and the other end of which extends towards the opposite direction of the second sidewall 213; the second sidewall 213 has a convex edge 215 with one end connected to the inner surface of the second sidewall and the other end extending toward the opposite first sidewall 211; the top wall 212 is provided with a ledge 215 which is connected at one end to the inner surface of the top wall and extends at the other end towards the opposite bottom wall 214. The side wall 21 of the housing, the protruding edge 215 and the rear wall 22 of the housing enclose an accommodation space, the electronic device can be accommodated in the accommodation space, and when the electronic device is accommodated in the accommodation space, a projection of the protruding edge 215 on the electronic device is within a range of the electronic device, that is, the protruding edge 215 clamps the electronic device in the accommodation space.

Referring to fig. 1d, the housing 20 further includes a protrusion 23, and the protrusion 23 is connected to the wall of the housing 20 (including the housing sidewall 21, the housing rear wall 22, and the protruding edge 215). The protruding part connecting end is connected with the wall of the shell 20, and the protruding part extending end extends and protrudes in the direction far away from the wall of the shell 20. When the protection device 10 is placed on a plane, the protruding portion 23 contacts with the placing plane, and the front end face of the rear wall 22 of the casing or the side wall of the casing has a set distance from the placing plane, so that a spare space is left between the electronic equipment accommodated in the protection device 10 and the placing plane, and the electronic equipment can dissipate heat.

In the present embodiment, the boss 23 includes a first boss and a second boss. First bellying sets up in casing back wall 22, and first bellying link is connected with casing back wall 22 and deviates from the one side (casing back wall surface) of casing lateral wall 21, and it is protruding to extend the end to the direction of keeping away from casing back wall surface, and first bellying is four, sets up respectively on four angles of casing lateral wall front end terminal surface. The first protruding part is in a frustum pyramid shape, and the cross-sectional area of the protruding part 23 decreases progressively from the connecting end to the extending section. Further, the first protruding portion is in a quadrangular frustum pyramid shape, and the bottom angle between the bottom surface and the side surface is 30-60 degrees. It can be understood that when the protection device 10 is placed on a plane, the first protruding portions 23 contact with the placing plane, in this case, the top surfaces of the frustum of the prism of the four first protruding portions 23 contact with the placing plane, or the side surfaces of the frustum of the prism of the two first protruding portions 23 contact with the placing plane. When the protection device 10 contacts with the placing plane through the prism table side surfaces of the two first protruding parts 23, the electronic equipment is obliquely placed on the placing plane, so that a user can conveniently watch videos. The second bulge sets up in casing lateral wall front end terminal surface, and second bulge link is connected with casing lateral wall front end terminal surface, and it is protruding to extend the end along extending to keeping away from casing lateral wall front end terminal surface direction.

Further, referring to fig. 1e and fig. 1f, the housing sidewall 21 is provided with an expanding portion 216, one end of the expanding portion 216 is connected to the outer surface of the housing sidewall, and the other end extends in a direction away from the outer surface of the housing sidewall, that is, the expanding portion 216 covers the housing sidewall 21 in the thickness direction of the housing sidewall 21, and the expanding portion 216 is provided with the thickness of the housing sidewall 21 where the expanding portion 216 is disposed, so as to increase the area of the end surface of the housing sidewall at the front end where the expanding portion 216 is disposed.

It can be understood that when the second protruding portion is arranged at the front end of the side wall of the housing, the contact connection area of the second protruding portion when the second protruding portion is connected with the front end of the side wall of the housing depends on the area of the front end face of the side wall of the housing, in general, the side wall 21 of the housing of the protection device 10 is thin, the area of the front end face of the side wall of the housing is small, the connection area of the protruding portion 23 and the front end face of the side wall of the housing is small, and the protruding portion 23 is connected insecure; in the embodiment, in order to prevent the protrusion portion 23 from forming the barb structure, the cross-sectional area of the protrusion portion 23 decreases from the connection end to the extension section, and if the connection area of the connection end of the protrusion portion is small, when the protrusion portion 23 is designed, either the protrusion height of the protrusion portion 23 is not enough, or the protrusion portion 23 is relatively sharp, the protrusion gradient is steep, and the appearance is not beautiful; in addition, when the protection device 10 is placed on a plane, the contact area between the top of the protruding portion 23 and the plane to be placed is small, the pressure intensity is large, and the protruding portion 23 is easy to deform. The provision of the expanded portion 216, the second protruding portion is connected to the front end face of the housing side wall provided with the expanded portion 216, so that the contact connection area between the protruding portion 23 and the front end face of the housing side wall is larger, which can help to solve the above problem. In this embodiment, the expansion portion 216 is disposed at the edge of the casing side wall 21, and the thickness of the expansion portion 216 at the edge fillet of the casing side wall 21 is increased, so that the expansion portion is expanded to a protruding fillet structure.

Referring to fig. 2a and 2b, a protection device 10, a power supply assembly, a control assembly and a sterilizing lamp 40 are also provided. The housing 20 is used to house the electronics and to secure the power supply assembly, control assembly, and the germicidal lamp 40. The power supply assembly, the control assembly and the disinfection lamp 40 are electrically connected to form a protection circuit. The power supply assembly is used for supplying power for the protection circuit. The control assembly is used for controlling the disinfection lamp 40 to be turned on or off. The sterilizing lamp 40 is used for irradiating and sterilizing the protection device 10 and the electronic equipment accommodated in the protection device 10. The mounting hole 231 is opened in the protruding portion 23, the disinfection lamp 40 is accommodated in the mounting hole 231, and the light of the disinfection lamp 40 can at least irradiate the electronic device use surface (electronic device display screen) accommodated in the protection device 10. The sterilizing lamp 40 is an ultraviolet sterilizing lamp.

The power supply assembly includes a power supply, a wireless charging device, and an interface converter 30.

In this embodiment, the power supply component is an interface converter 30, and one end of the interface converter 30 can be electrically connected to a charging interface of the electronic device, so as to use the electronic device as a power supply to take power from the electronic device and supply power to the protection circuit; the other end can be connected with the charging wire electricity to be connected with external power supply through the charging wire, so that external power supply charges for electronic equipment through interface converter 30. When the electronic device is accommodated in the protection device 10, the interface converter 30 is electrically connected to the charging interface of the electronic device. It can be understood that the power is taken from the electronic equipment through the interface converter 30, the power supply assembly has the characteristics of simple structure, small occupied size, light weight and low production cost, the parts of the protection device 10 needing to be carried are minimum, and the external power supply is not influenced to charge the electronic equipment.

Referring to fig. 3, in particular, the interface converter 30 is disposed on the bottom wall 214, the interface converter 30 includes a protrusion interface 31 and a groove interface 32, and the protrusion interface 31 is electrically connected to the groove interface 32. Protruding interface 31 sets up at diapire 214 internal surface, and protruding interface 31 is in accommodation space promptly, and when electronic equipment was in accommodation space, protruding interface 31 and the interface grafting adaptation that charges of electronic equipment to realize protruding interface 31 and the electronic equipment interface's that charges electricity and be connected, groove interface 32 sets up at diapire 214 surface, but external charging wire is connected through charging wire and external power source electricity. Protruding interface 31 is connected with the electronic equipment interface electricity that charges, and recess interface 32 is connected with the charging wire electricity, and when external power source was connected to the charging wire, external power source can charge for electronic equipment.

The control assembly is fixed on the shell and can be arranged at any position of the shell according to requirements. The control assembly has a plurality of control schemes for the sterilizing lamp, and the control assembly can comprise a mechanical switch, a processor, a combination of a sensor and a processor as well as a timer and the like. A partial control scheme will now be described by way of example. It is to be understood that the control schemes include, but are not limited to, the illustrated examples. In this embodiment, the control component is electrically connected with the interface converter, and the control component can be electrically connected with the bump interface only; and the control component can also be electrically connected with the convex interface and the concave interface respectively, namely the control component is electrically connected with the convex interface and the control component is electrically connected with the concave interface.

The first embodiment is as follows: the control assembly comprises a mechanical switch, the mechanical switch is partially accommodated in the shell and partially exposed out of the shell, and preferably, the mechanical switch is arranged on the first side wall or the second side wall. The mechanical switch is turned on, the disinfection lamp is lighted, the mechanical switch is turned off, and the disinfection lamp is turned off. The mechanical switch may be a key switch, a touch switch, or the like. The user controls the disinfection lamp to disinfect through the mechanical switch, and the disinfection lamp is simple in structure and convenient to use.

Example two: the control assembly comprises a processor, the processor is electrically connected with the electronic equipment through the interface converter, an application program capable of communicating with the processor is installed in the electronic equipment, and the electronic equipment and the processor communicate with each other. The user formulates a control instruction through an application program installed on the electronic equipment and sends the control instruction to the processor, and the processor receives the control instruction of the electronic equipment and lights or extinguishes the disinfection lamp according to the control instruction. The control instruction can comprise operation instructions such as turning on or off the lamp, and can also comprise function setting instructions such as timing on or off, timing on, lamp duration and lamp-on forbidding time of the processor. The control instruction is formulated through an application program, and semi-intelligent control can be realized on the disinfection lamp. The user can set up control command according to the use habit of oneself, if: the disinfection is started at 7 o ' clock 30 in the morning every day, or 8 o ' clock to 21 o ' clock can be started for disinfection, and the disinfection is prohibited between 21 o ' clock and 8 o ' clock, avoids turning on the light and influences sleep to disinfection time of disinfection lamp 40 is rationally arranged, avoids the meaningless power consumption of protection device. It will be appreciated that the function setting instructions may also be written directly into the system program of the processor.

Example three: the control assembly includes a processor, a sensor, and a timer. The processor is electrically connected with the sensor, and the processor is electrically connected with the timer. The sensor is used for detecting the state of the electronic equipment (including a used state and an unused state), and different detection values are fed back to the processor when the electronic equipment is in different states. The processor judges the state of the electronic equipment according to the feedback detection value and controls the disinfection lamp to turn on or turn off. The timer receives a timing instruction of the processor to start timing, and feeds back timing information to the processor when the timing reaches a set timing threshold value.

The sensor can include acceleration sensor, pressure sensor, velocity sensor and other sensors, and can be a single type of sensor, or a plurality of different types of sensors are used in combination, as long as the sensor can detect the motion state and the static state of the electronic device, and feed back different detection values.

The control process of the control assembly comprises the following steps:

the sensor detects the state of the electronic equipment and feeds back a detection value to the processor, and the processor judges whether the electronic equipment is in a motion state or a static state according to the detection value.

If the processor judges that the electronic equipment is in a static state, a first timing instruction is sent to the timer, the timer starts timing, if the acceleration sensor continuously feeds back a static detection value within a first set time, namely the electronic equipment is continuously in the static state within the first set time, the processor judges that the electronic equipment is not in a use state, and the processor controls the disinfection lamp to be lightened so as to carry out irradiation disinfection on the electronic equipment. So, can realize the intelligent judgement to the electronic equipment service behavior, can avoid the user with electronic equipment short time, temporarily place by mistake affirmation as being in unused state, intelligent control sterilamp lights the sterilization under the unused state of electronic equipment, does not delay electronic equipment's use, and does not need the electronic equipment user to consume the matter of carelessly managing electronic equipment disinfection and sterilization.

The processor lights the disinfection lamp and sends a second timing instruction to the timer, and the timer starts timing. And if the lighting duration of the disinfection lamp reaches the second set time, the timer feeds back second timing completion information to the processor, and the processor extinguishes the disinfection lamp according to the second timing completion information. Therefore, intelligent management of the disinfection time of the disinfection lamp can be realized, and the optimal disinfection time and the optimal power consumption can be guaranteed to fully and effectively disinfect the electronic equipment.

And the processor closes the disinfection lamp according to the second timing completion information, sends a third timing instruction to the timer, starts timing by the timer, and feeds back the third timing completion information to the processor when the third set time is reached. And before the processor does not receive the third timing information, keeping the disinfection lamp in an off state. So, can keep the extinction state of sterilamp in the third time-counting threshold value within range of setting for after sterilamp disinfection, in the effective time range of the disinfection after sterilamp disinfection, do not disinfect once more, avoid repeated meaningless disinfection, keep the disinfection interval of sterilamp. The opening times of the disinfection lamp is reduced, the electricity consumption of the protection circuit is reduced, and the service time of the electronic equipment cannot be influenced due to large electricity consumption of the protection device.

The principle and the implementation of the present application are explained herein by applying specific examples, and the above description of the embodiments is only used to help understand the core idea of the present application; meanwhile, for a person skilled in the art, modifications or changes can be made to the above description according to the idea of the present application, and changes in the specific embodiments and application scope shall fall within the protection scope of the appended claims. In view of the above, the description should not be taken as limiting the application.

Claims (10)

1. A protection device is used for being matched with electronic equipment, and the electronic equipment is accommodated in the protection device, and the protection device is characterized in that: the shell wall and the bulge are included, the bulge is connected with the shell wall, one end of the bulge is connected with the shell wall, and the other end of the bulge extends to a bulge away from the shell wall;

when the protection device is placed on a plane, the convex part is contacted with the placing plane, and the shell wall is away from the placing plane by a set distance.

2. A protective device according to claim 1, characterized in that: the housing wall includes a housing back wall; the boss comprises a first boss;

the first bulge is arranged on the rear wall of the shell, the connecting end of the first bulge is connected with the outer surface of the rear wall of the shell, and the extending end extends and bulges in the direction far away from the outer surface of the rear wall of the shell;

when the protection device is placed on a plane, the first protruding portion is in contact with the placing plane, and the outer surface of the rear wall of the shell is away from the placing plane by a set distance.

3. A protective device according to claim 2, characterized in that: the first protruding part comprises a frustum pyramid shape, the first protruding part extends from the connecting end to the first protruding part, and the cross-sectional area of the first protruding part is gradually reduced.

4. A protective device according to claim 3, wherein: the first protruding portion is in a quadrangular frustum pyramid shape, and the bottom angle between the bottom surface and the side surface is 30-60 degrees.

5. A protective device according to claim 2, characterized in that: the shell wall comprises a shell side wall, and the shell side wall comprises a shell side wall front end face and a shell side wall outer surface; the boss comprises a second boss;

the second bulge is arranged on the front end face of the side wall of the shell, one end of the second bulge is connected with the front end face of the side wall of the shell, and the other end of the second bulge extends and bulges in the direction far away from the front end face of the side wall of the shell;

when the protection device is placed on a plane, the second protruding portion is in contact with the placing plane, and the end face of the front end of the side wall of the shell is a set distance away from the placing plane.

6. A protective device according to claim 5, characterized in that: the shell side wall is provided with an expansion portion, one end of the expansion portion is connected with the outer surface of the shell side wall, the other end of the expansion portion extends in a direction away from the outer surface of the shell side wall in an expansion mode, the expansion portion is provided with an area of the front end face of the shell side wall where the expansion portion is arranged, and the protruding portion is connected with the front end face of the shell side wall where the expansion portion is arranged.

7. A protective device according to any one of claims 1-6, characterized in that: the protection device also comprises a power supply assembly, a control assembly and a disinfection lamp; the shell is used for accommodating electronic equipment and fixing the power supply assembly, the control assembly and the disinfection lamp, and the power supply assembly, the control assembly and the disinfection lamp are electrically connected to form a protection circuit;

the power supply assembly supplies power to the protection circuit;

the control assembly is used for controlling the disinfection lamp to be turned on or turned off so as to realize irradiation disinfection on the protection device and the electronic equipment accommodated in the protection device;

the bulge has been seted up the mounting hole, and the sterilamp is installed in the bulge.

8. A protective device according to claim 7, wherein: the power supply assembly is an interface converter, the interface converter can be electrically connected with a charging interface of the electronic equipment, the electronic equipment is used as a power supply, the electronic equipment is used for getting power, and the protection circuit is powered;

when the electronic equipment is accommodated in the protection device, the interface converter is electrically connected with the electronic equipment.

9. A protective device according to claim 8, wherein: the interface converter comprises a convex interface and a concave interface, and the convex interface is electrically connected with the concave interface;

the raised interface is arranged on the inner surface of the shell, and when the electronic equipment is accommodated in the shell, the raised interface is in plug-in fit with the charging interface of the electronic equipment so as to realize the electric connection between the raised interface and the charging interface of the electronic equipment;

the groove interface is arranged on the outer surface of the shell and can be electrically connected with the charging wire, so that an external power supply can charge the electronic equipment through the charging wire, the groove interface and the protrusion interface;

the control component is electrically connected with the convex interface or respectively electrically connected with the convex interface and the groove interface.

10. A protective device according to claim 7, wherein: the control assembly includes a combination of mechanical switches, sensors and processors, and a timer.

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