Maintenance equipment of Internet of Things server

Abstract

The invention discloses maintenance equipment of an Internet of Things server, and belongs to the technical field of Internet of Things tools. The temperature sensing mechanism comprises a panel arranged on the inner wall of the box body, an annular clamping groove is formed in the panel, a bimetallic strip is installed on the panel in a clamping and fixing mode, a passive layer is connected to the edge of the outer wall of the bimetallic strip, an active layer is connected to the passive layer in an integrally-formed mode, and the temperature sensing mechanism is arranged on the inner wall of the box body. A movable opening formed in the panel is formed in one end of the active layer, and the bottom of the active layer is connected with a pull rope through a lifting rod; the lifting rod is connected with a guide groove in the height direction of the sleeve on the panel, and one end of the pull rope is connected to the movable plate in a traction mode through a guide wheel. The technical problems that adaptive balance adjustment cannot be carried out on the temperature in the server, in the long-time working process of a ventilation opening of the server, particle impurities are prone to being blocked at a filter plate due to aggregation, and normal heat dissipation work is not facilitated are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of Internet of Things tools, and particularly relates to a maintenance device for an Internet of Things server. Background Art

[0002] The Internet of Things originated in the media field and is the third revolution in the information technology industry. The Internet of Things refers to connecting any object to a network through information sensing devices according to an agreed protocol. The object conducts information exchange and communication through an information dissemination medium to achieve functions such as intelligent identification, positioning, tracking, and supervision. There are three key aspects in the application of the Internet of Things, namely the perception layer, the network transmission layer, and the application layer.

[0003] A server is a specific computer device that provides computing power and runs software applications in a network environment. It provides computing or application services for other client computers in the network. During the use of the server, the internal fan will start together with the power supply for heat dissipation work. However, when winter comes or the indoor temperature is relatively low, the server itself does not need to exhaust air for heat dissipation, but the fan will still start with the power supply, which causes a certain amount of resource waste and is not conducive to environmental protection. Therefore, during the use process, the temperature inside the server cannot be adaptively and evenly adjusted. Moreover, during the long-term operation of the ventilation port of the server, particulate impurities are likely to accumulate and block at the filter plate, which is not conducive to normal heat dissipation work and affects the safety of the device. Summary of the Invention

[0004] The purpose of the present invention is to provide a maintenance device for an Internet of Things server to solve the technical problems that the temperature inside the server cannot be adaptively and evenly adjusted, and during the long-term operation of the ventilation port of the server, particulate impurities are likely to accumulate and block at the filter plate, which is not conducive to normal heat dissipation work.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions: A maintenance device for an Internet of Things server, characterized by comprising: A box body; A temperature sensing mechanism, the temperature sensing mechanism includes a panel disposed on the inner wall of the box body. The panel is provided with an annular card slot and a bimetallic strip is installed by a snap-fitting and fixing method. A passive layer is connected to the outer wall edge of the bimetallic strip, and an active layer is integrally formed and connected to the passive layer. One end of the active layer is provided with a movable opening disposed on the panel, and a pull rope is connected to the bottom of the active layer through a lifting rod; Among them, a guiding groove is connected along the height direction of the sleeve on the panel of the lifting rod. One end of the pulling rope is traction-connected to the movable plate through a guiding wheel. Compression springs are connected between both sides of the top end of the movable plate and the mounting seat. The mounting seat is connected to the side wall of the box body through a bracket. A plug rod extending into the interior of the mounting seat is fixedly installed on the top of the movable plate. A first conical part placed in the gap between the battery packs is integrally formed and connected to the top of the plug rod. The battery packs are detachably connected to the interior of the mounting seat, and the output ends of the battery packs are electrically connected to a heat dissipation component placed on the mounting seat. Adjusting the partition mechanism, the adjusting partition mechanism includes a cross beam fixed on the lifting rod. One end of the cross beam is connected with a first gear plate. The outer wall of the first gear plate is meshed and driven by a first rotating tooth with a second gear plate moving in the opposite direction. The extending end of the second gear plate is connected with a baffle plate in contact and fit with the ventilation opening through a bracket. A strip-shaped groove is connected along the height direction of the box body on the outer wall edge of the bracket, and the strip-shaped groove is designed as a telescopic structure.

[0006] Furthermore, the heat dissipation component includes a double-shaft motor powered by the battery packs. One side of the output end of the double-shaft motor is connected to a first rotating shaft through a reciprocating lead screw, and the opposite side is connected to a second rotating shaft. A scraping plate placed at the ventilation opening is fixedly installed on the outer wall of the first rotating shaft. A ventilation plate placed at the ventilation opening is installed near one end of the scraping plate on the inner wall of the box body. Through holes adapted to it are provided on the ventilation plate.

[0007] Furthermore, a slider fixed on the annular plate is helically driven on the reciprocating lead screw. The slider is connected with a sliding groove along the length direction of the inner wall of the box body. A circular hole placed on the reciprocating lead screw is provided at the center of the annular plate. A second conical part in contact and fit with the through holes is integrally formed and connected to the outer wall of the annular plate. A rolling groove connected to the first rotating shaft is provided on one side edge of the ventilation plate.

[0008] Furthermore, one end of the second rotating shaft penetrates through the cover body and extends to a first conical gear inside the cover body. One end of the cover body is fixedly connected to a fixed frame on the side wall of the box body. The outer wall of the first conical gear is meshed and driven with a second conical gear fixed on a second rotating tooth. The upper and lower ends of the second rotating tooth are both meshed and driven with third gear plates moving in the opposite direction. The extending end of the third gear plate is connected with a cleaning brush symmetrically centered on the second rotating tooth, and an opening is connected along the length direction of the cover body on the third gear plate.

[0009] Furthermore, the cover body is connected to the inner wall of the box body through a column. An accommodating cavity placed on the electronic components inside the box body is formed between the cleaning brushes, and one end of the cleaning brush is in contact and fit with the side wall of the box body.

[0010] Furthermore, the guiding wheel is movably connected to a bearing on the support plate, and one end of the support plate is fixedly installed on the side wall of the box body.

[0011] Furthermore, the bottom of the baffle is installed on the bracket by means of plug-in fixation, and the baffle is arranged in a rectangular shape or a ring shape.

[0012] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows: (1) A temperature sensing mechanism is provided. During the use of the Internet of Things server, when the temperature reaches a certain limit, the active layer is heated and deformed and bent, and drives the lifting rod to move upward. During the upward movement of the lifting rod, on the one hand, it can drive the insertion rod on the movable plate to move downward through the pulling rope, so that the insertion rod is separated from the battery pack, and the battery pack supplies power for the normal start of the double-shaft motor. On the other hand, it drives the movement of the first gear plate through the cross beam. Under the action of gear meshing transmission, the second gear plate can drive the baffle to move downward, so as to open the ventilation port, and cooperate with the heat dissipation component to realize effective temperature reduction adjustment work.

[0013] (2) An adjustment and partition mechanism is provided. The bending degree of the active layer depends on the change of temperature. When the temperature is higher, the moving amplitude of the lifting rod is also larger. Thus, under the action of gear meshing transmission, the distance that the baffle moves downward can be driven, so that the opening area of the ventilation port can be automatically adjusted adaptively accordingly. When it gets cold, since the passive layer is fixed on the panel, therefore, the active layer will not bend relatively. Therefore, the baffle at the ventilation port will not move, and the ventilation port will be in a relatively sealed state. Therefore, the constant temperature effect inside the server can be guaranteed, thereby improving the stability of the device during use.

[0014] (3) A heat dissipation component is provided. After the double-shaft motor is started, it can drive the rotation of the scraper through the first rotating shaft and also drive the rotation of the second rotating shaft. During the rotation of the scraper, it can not only play a role in rotating heat dissipation, but also remove the particulate impurities on the outer wall of the ventilation plate. The ventilation plate can mainly filter and block the external particulate impurities. At the same time, during the rotation of the reciprocating lead screw, through the action of screw drive, it can drive the movement of the annular plate through the slider. During the movement of the annular plate, the impurities blocking the through holes can be pushed out, thereby effectively ensuring the filtering effect of the ventilation plate. In addition, during the rotation of the second rotating shaft, under the action of mechanical transmission, the cleaning brushes at both ends can be made to rub and clean in the opposite direction at the same time. On the one hand, the cleaning efficiency is accelerated, and on the other hand, the impurities attached to the side wall of the box body are effectively removed. The structural design is reasonable, practical and simple, and the automation effect is strong. Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic structural diagram of a maintenance device for an Internet of Things server of the present invention; Figure 2 It is an internal schematic diagram of the box body of the present invention; Figure 3 It is a front view of the internal direction of the box body of the present invention; Figure 4 It is the present invention Figure 1 An enlarged view of part A; Figure 5 It is the present invention Figure 2 An enlarged view of part B; Figure 6 It is a schematic diagram of the meshing transmission of the first rotating tooth of the present invention; Figure 7 It is a connection schematic diagram of the insertion rod of the present invention; Figure 8 It is the present invention Figure 2 An enlarged view of part C; Figure 9 It is a schematic diagram of the meshing transmission of the first bevel gear and the second bevel gear of the present invention; Figure 10 It is a schematic diagram of the meshing transmission of the second rotating tooth of the present invention.

[0017] Reference numerals: 1, temperature sensing mechanism; 2, bimetallic strip; 3, passive layer; 4, active layer; 5, lifting rod; 6, pulling rope; 7, sleeve; 8, guide wheel; 9, movable plate; 10, mounting seat; 11, compression spring; 12, insertion rod; 13, battery pack; 14, first conical part; 15, heat dissipation component; 16, adjusting and blocking mechanism; 17, cross beam; 18, first gear plate; 19, first rotating tooth; 20, second gear plate; 21, shielding plate; 22, double-shaft motor; 23, reciprocating lead screw; 24, first rotating shaft; 25, second rotating shaft; 26, scraping plate; 27, ventilation plate; 28, through hole; 29, annular plate; 30, slider; 31, second conical part; 32, first bevel gear; 33, second rotating tooth; 34, second bevel gear; 35, third gear plate; 36, cleaning brush. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Referring to the attached Figure 1 and Figure 2 As shown, a maintenance device for an Internet of Things server includes: A box body; a temperature sensing mechanism 1, the temperature sensing mechanism 1 includes a panel disposed on the inner wall of the box body, an annular card slot is formed on the panel, and a bimetallic sheet 2 is installed by a snap-fitting method. A passive layer 3 is connected to the outer wall edge of the bimetallic sheet 2, and an active layer 4 is integrally formed and connected to the passive layer 3. One end of the active layer 4 is provided with a movable opening on the panel, and a pull rope 6 is connected to the bottom of the active layer 4 through a lifting rod 5; Among them, the lifting rod 5 is connected with a guide groove along the height direction of the sleeve 7 on the panel. One end of the pull rope 6 is traction-connected to the movable plate 9 through a guide wheel 8. Compression springs 11 are connected between both sides of the top end of the movable plate 9 and the mounting seat 10. The mounting seat 10 is connected to the side wall of the box body through a bracket, and a plug rod 12 extending into the interior of the mounting seat 10 is fixedly installed on the top of the movable plate 9. A first tapered portion 14 is integrally formed and connected to the top of the plug rod 12 and is placed in the gap between the battery packs 13. The battery packs 13 are detachably connected to the interior of the mounting seat 10, and the output end of the battery packs 13 is electrically connected to a heat dissipation component 15 disposed on the mounting seat 10.

[0020] Specifically, when the temperature changes, the deformation of the active layer 4 is greater than that of the passive layer 3. As a result, the whole of the bimetallic sheet 2 will bend toward the passive layer 3 side, and the curvature of this composite material changes to generate deformation. Through the above-mentioned heat change, the lifting rod 5 can move up and down. During the up and down movement of the lifting rod 5, the setting of the guide groove in the sleeve 7 can play a role in limiting and guiding the movement of the lifting rod 5, preventing the occurrence of position deviation during the movement, and thus ensuring the stability of the transmission part during operation.

[0021] A temperature sensing mechanism 1 is provided. During the use of the Internet of Things server, when the temperature reaches a certain limit, the active layer 4 is deformed and bent by heat, and drives the lifting rod 5 to move upward. During the upward movement of the lifting rod 5, on the one hand, it can drive the insertion rod 12 on the movable plate 9 to move downward through the pull rope 6, so that the insertion rod 12 is separated from the battery pack 13, and the battery pack 13 supplies power for the normal start of the biaxial motor 22. On the other hand, it drives the movement of the first gear plate 18 through the cross beam 17. Under the action of gear meshing transmission, the second gear plate 20 can drive the shielding plate 21 to move downward, thereby opening the ventilation port, and cooperating with the heat dissipation component 15 can realize effective temperature reduction and adjustment work.

[0022] Furthermore, the guide wheel 8 inside the box plays a corresponding guiding role in the movement of the pull rope 6, which can effectively transmit the pulling force to the movable plate 9, and cooperate with the elastic recovery function of the compression spring 11 to enable the battery packs 13 to be energized or disconnected.

[0023] Reference Figure 2 、 Figure 5 and Figure 6 Adjust the partition mechanism 16. The partition mechanism 16 includes a cross beam 17 fixed on the lifting rod 5. One end of the cross beam 17 is connected with a first gear plate 18. The outer wall of the first gear plate 18 is meshed and driven by a first rotating tooth 19 with a reversely moving second gear plate 20. The extended end of the second gear plate 20 is connected with a shielding plate 21 that contacts and fits the ventilation port through a bracket. The outer wall edge of the bracket is connected with a strip-shaped groove along the height direction of the box, and the strip-shaped groove is designed as a telescopic structure.

[0024] The telescopic strip-shaped groove can, on the one hand, ensure the normal up and down movement of the bracket, and on the other hand, ensure the airtightness of the outer wall of the box to prevent external dust particles from entering the inside of the box. In addition, the telescopic strip-shaped groove is a conventional technical means for those skilled in the art and will not be described in detail here, nor will it affect the effective implementation of the technical solution of the present invention.

[0025] Set the partition mechanism 16. The bending degree of the active layer 4 depends on the change in temperature. When the temperature is higher, the moving amplitude of the lifting rod 5 is also larger. Thus, under the action of gear meshing transmission, the distance that the shielding plate 21 can be driven to move downward can be adjusted accordingly. In this way, the opening area of the ventilation port can be adaptively and automatically adjusted. When it gets cold, since the passive layer 3 is fixed on the panel, the active layer 4 will not bend relatively. Therefore, the shielding plate 21 at the ventilation port will not move, and the ventilation port will be in a relatively sealed state. Therefore, the constant temperature effect inside the server can be ensured, thereby improving the stability of the device during use.

[0026] Reference Figure 3 、 Figure 4 、Figure 7 and Figure 8 The heat dissipation component 15 includes a biaxial motor 22 that is powered and connected to the battery pack 13. One side of the output end of the biaxial motor 22 is connected to the first rotating shaft 24 through a reciprocating lead screw 23, and the opposite side is connected to the second rotating shaft 25. A scraper 26 placed at the ventilation opening is fixedly installed on the outer wall of the first rotating shaft 24. One end of the scraper 26 is close to the inner wall of the box body and is provided with a ventilation plate 27 placed at the ventilation opening. The ventilation plate 27 is provided with through holes 28 adapted thereto.

[0027] A slider 30 fixed on an annular plate 29 is in screw drive on the reciprocating lead screw 23. The slider 30 is connected to a chute along the length direction of the inner wall of the box body. A circular hole placed on the reciprocating lead screw 23 is provided at the center of the annular plate 29, and a second conical portion 31 that abuts and fits with the through hole 28 is integrally formed and connected to the outer wall of the annular plate 29. A rolling groove connected to the first rotating shaft 24 is provided at one side edge of the ventilation plate 27.

[0028] After the biaxial motor 22 is started, it can drive the simultaneous rotation of the reciprocating lead screw 23 and the first rotating shaft 24. Cooperating with the scraper 26 and the second conical portion 31 on the annular plate 29, it can play a role in heat dissipation and cleaning of the ventilation plate 27. At the same time, through the abutting and pushing action of the second conical portion 31, the clogged impurity particles on the through hole 28 can be removed, thereby effectively ensuring the filtering effect of the ventilation plate 27 itself, effectively preventing particulate dust from entering the box body. At the same time, the circular hole on the annular plate 29 is to ensure the normal movement of the annular plate 29 itself, so as to ensure the normal operation of the entire device.

[0029] The heat dissipation component 15 is provided. After the biaxial motor 22 is started, it can not only drive the rotation of the scraper 26 through the first rotating shaft 24, but also drive the rotation of the second rotating shaft 25. During the rotation of the scraper 26, it can not only play a role in rotational heat dissipation, but also remove the particulate impurities on the outer wall of the ventilation plate 27. The ventilation plate 27 can mainly play a role in filtering and blocking external particulate impurities. At the same time, during the rotation of the reciprocating lead screw 23, through the screw drive action, the annular plate 29 can be driven to move by the slider 30. During the movement of the annular plate 29, the clogged impurities at the through hole 28 can be pushed out, thereby effectively ensuring the filtering effect of the ventilation plate 27. In addition, during the rotation of the second rotating shaft 25, under the action of mechanical transmission, the cleaning brushes 36 at both ends can be simultaneously cleaned by reverse friction. On the one hand, the cleaning efficiency is improved, and on the other hand, the impurities attached to the side wall of the box body are effectively removed. The structure design is reasonable, practical and simple, and the automation effect is strong.

[0030] Reference Figure 3 、 Figure 9 and Figure 10, One end of the second rotating shaft 25 penetrates through the cover body and extends to the first bevel gear 32 inside the cover body. One end of the cover body is fixedly connected to the fixing bracket on the side wall of the box body. The outer wall of the first bevel gear 32 is meshed and driven with the second bevel gear 34 fixed on the second rotating tooth 33. The upper and lower ends of the second rotating tooth 33 are both meshed and driven with the third gear plates 35 moving in opposite directions. The extending end of the third gear plate 35 is connected with a cleaning brush 36 symmetrically centered on the second rotating tooth 33, and the third gear plate 35 is connected with an opening along the length direction of the cover body.

[0031] The top of the cover body and the inner wall of the box body are connected by columns. An accommodation cavity for placing electronic components inside the box body is formed between the cleaning brushes 36, and one end of the cleaning brush 36 is in contact and fit with the side wall of the box body. The guide wheel 8 is movably connected to the bearing on the support plate, and one end of the support plate is fixedly installed on the side wall of the box body.

[0032] The settings of the first bevel gear 32 and the second bevel gear 34 can realize the commutation adjustment of the power, so as to drive the rotation of the second rotating tooth 33 at the center. The reverse movement of the cleaning brush 36 driven by the third gear plates 35 at both ends can improve the cleaning efficiency. The bottom of the shielding plate 21 is installed on the bracket by means of plugging and fixing, and the shielding plate 21 is set in a rectangular or annular shape. The above shape design can not only effectively block the ventilation opening, but also improve the aesthetics of the product according to the actual production needs.

[0033] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

[0034] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only the specific embodiments. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments to better explain the principle and practical application of the present invention, so that those skilled in the art in the technical field can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A maintenance device for an Internet of Things server, characterized in that: include: Box; A temperature sensing mechanism (1), the temperature sensing mechanism (1) comprising a panel disposed on an inner wall of a box, the panel being provided with an annular slot and having a bimetallic strip (2) mounted thereon by means of a snap-fitting fixation, a passive layer (3) being connected to an outer wall edge of the bimetallic strip (2), an active layer (4) being integrally formed and connected to the passive layer (3), one end of the active layer (4) being provided with a movable opening disposed on the panel, and a pull rope (6) being connected to the bottom of the active layer (4) via a lifting rod (5); The lifting rod (5) is connected to a guide groove along the height direction of the sleeve (7) on the panel, one end of the pull rope (6) is connected to the movable plate (9) by pulling through a guide wheel (8), both sides of the top of the movable plate (9) and the mounting seat (10) are connected through compression springs (11), the mounting seat (10) is connected to the side wall of the box body through a bracket, and a plug rod (12) extending into the inside of the mounting seat (10) is fixedly installed on the top of the movable plate (9), the top of the plug rod (12) is integrally connected with a first conical portion (14) placed in the gap between the battery packs (13), and the battery pack (13) is detachably connected to the inside of the mounting seat (10), and the output end of the battery pack (13) is electrically connected to a heat dissipation component (15) placed on the mounting seat (10); An adjustable baffle mechanism (16) comprising a crossbeam (17) fixed on a lifting rod (5), one end of the crossbeam (17) being connected to a first gear plate (18), an outer wall of the first gear plate (18) being meshed with a second gear plate (20) for reverse movement via a first rotating tooth (19), an extended end of the second gear plate (20) being connected to a baffle plate (21) in contact with the vent via a bracket, an outer wall edge of the bracket being connected to a strip groove along the height direction of the box body, and the strip groove is a telescopic structure design.

2. The maintenance device of an Internet of Things server according to claim 1, characterized in that: The heat dissipation assembly (15) comprises a dual-axis motor (22) connected to the battery pack (13) for power supply, one side of the output end of the dual-axis motor (22) being connected to a first rotating shaft (24) via a reciprocating screw (23), and the other side being connected to a second rotating shaft (25), a scraper (26) disposed at a vent is fixedly mounted on the outer wall of the first rotating shaft (24), a ventilation plate (27) disposed at the vent is mounted on one end of the scraper (26) close to the inner wall of the box body, and the ventilation plate (27) is provided with a through hole (28) matching the ventilation plate (27).

3. The maintenance device of an Internet of Things server according to claim 2, characterized in that: The reciprocating screw (23) is spirally driven with a slider (30) fixed on the annular plate (29), the slider (30) being connected with a slide groove along the length direction of the inner wall of the box body, a circular hole placed on the reciprocating screw (23) is provided at the center of the annular plate (29), and a second conical portion (31) that contacts and fits with the through hole (28) is integrally formed and connected on the outer wall of the annular plate (29), and a rolling groove connected with the first rotating shaft (24) is provided on one side edge of the ventilation plate (27).

4. The maintenance device of an Internet of Things server according to claim 2, characterized in that: One end of the second rotating shaft (25) passes through the cover body and extends to the first bevel gear (32) inside the cover body. One end of the cover body is fixedly connected to a fixing frame on the side wall of the box body. The outer wall of the first bevel gear (32) is meshed with a second bevel gear (34) fixed to the second rotating tooth (33). The upper and lower ends of the second rotating tooth (33) are meshed with a third gear plate (35) that moves in the opposite direction. The extended end of the third gear plate (35) is connected to a cleaning brush (36) symmetrical with the center of the second rotating tooth (33). The third gear plate (35) is connected with an opening along the length direction of the cover body.

5. The maintenance device of an Internet of Things server according to claim 4, characterized in that: The top of the cover body and the inner wall of the box body are connected via a column, and a receiving cavity for the electronic component placed inside the box body is formed between the cleaning brushes (36), and one end of the cleaning brush (36) is in contact with and fits against the side wall of the box body.

6. The maintenance device of an Internet of Things server according to claim 1, characterized in that: The guide wheel (8) is movably connected to a bearing on a support plate, and one end of the support plate is fixedly mounted on a side wall of the box body.

7. The maintenance device of an Internet of Things server according to claim 1, characterized in that: The bottom of the shielding plate (21) is mounted on the bracket by plugging and fixing, and the shielding plate (21) is arranged in a rectangular shape or a ring shape.

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