Drying and charging integrated structure for hearing aid

Abstract

The hearing aid drying and charging integrated structure comprises a box body and at least one hearing aid, the box body comprises a shell and a shell cover connected with the shell in an opening and closing mode, and an upper containing cavity and a lower containing cavity which are matched with the upper surface and the lower surface of the hearing aid are formed in the shell cover and the shell respectively; when the shell cover and the shell are closed in a covering mode, the upper containing cavity and the lower containing cavity are connected to form a containing cavity used for containing the hearing aid, a charging contact is arranged on the bottom face of the lower containing cavity, and a charging interface matched with the charging contact is formed in the lower surface of the hearing aid. When the hearing aid is in use, the earplug part can scrape and fall off auditory meatus secretions on the earplug part through the rotating cleaning brush and the cleaning strip, and the fallen auditory meatus secretions are blown into the drying cavity for treatment through direct blowing airflow, so that a dry charging storage environment is kept, and the service life of the hearing aid is effectively prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of hearing aids, in particular to an integrated structure for drying and charging hearing aids. Background Art

[0002] In modern society, hearing aids are widely used as important hearing aids. They help hearing-impaired people improve their hearing quality and quality of life. However, hearing aids are subject to a variety of adverse factors during use, especially humid environments and dirt, which may cause hearing aids to deteriorate in performance, shorten their service life, and even cause irreversible damage.

[0003] Since the surface of the hearing aid is often covered with ear canal secretions after a day of use, the hearing aid usually needs to be simply wiped before charging, and then placed in a sealed container (containing absorbent silica particles) to dry. After drying, it is placed in the charging box for charging. This process takes a relatively long time because cleaning and drying are carried out separately from charging. Summary of the invention

[0004] The purpose of the present invention is to provide an integrated structure for drying and charging hearing aids, aiming to solve the above problems. The charging box not only has the function of charging the hearing aid, but also integrates active cleaning and drying technology, which can effectively remove dirt and moisture from the outside of the hearing aid. Through innovative design and functional integration, the charging box can provide a safe and hygienic environment while charging the hearing aid, ensuring that the hearing aid can be kept dry and clean before each use.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hearing aid drying and charging integrated structure, a hearing aid drying and charging integrated structure, comprising a box body and at least one hearing aid, characterized in that: the box body comprises a shell, a shell cover connected to the shell, an upper cavity and a lower cavity respectively arranged in the shell cover and the shell, which are adapted to the upper and lower surfaces of the hearing aid, when the shell cover is closed with the shell, the upper cavity and the lower cavity are connected to form a receiving cavity for accommodating the hearing aid, the bottom surface of the lower cavity is provided with charging contacts, the lower surface of the hearing aid is provided with a charging interface adapted to the charging contacts, when the hearing aid is placed in the receiving cavity, the charging interface abuts against the charging contacts and forms an electrical connection, so that current is input into the hearing aid through the charging contacts for charging; A cleaning cavity is provided in the upper cavity corresponding to the earplug part of the hearing aid, and a cleaning brush is rotatably provided on the top surface of the cleaning cavity. A motor is installed inside the shell cover, and the motor is transmission-connected to the rotating shaft of the cleaning brush to drive the cleaning brush to rotate. A drying device is provided inside the shell cover, and the drying device is communicated with the cleaning cavity. When the hearing aid is placed in the receiving cavity, its earplug part is located in the cleaning cavity, and the cleaning brush is covered on the surface of the earplug part. The cleaning brush can scrape off the stains on the earplug part by rotation, and at the same time, the drying device extracts the stains and water vapor that fall off in the cleaning cavity.

[0006] Furthermore, the drying device includes a micro fan, a drying chamber and a filter assembly, the drying chamber is provided on the top surface of the shell cover, and the filter assembly is arranged in the drying chamber to absorb dirt and moisture entering the air; the top surface of the shell is located in the outer peripheral area of ​​the earplug part of the hearing aid and is provided with a plurality of air outlet holes, and when the shell cover and the shell cover are closed, the air outlet holes are located on the inner side of the cleaning chamber, and a telescopic hose is embedded and connected at the hinge between the shell cover and the shell, the upper end of the telescopic hose is connected to the shell cover, and the lower end is connected to the shell; a downwind duct is provided inside the shell, one end of the downwind duct is connected to each air outlet hole, and the other end is connected to the telescopic hose, and the micro fan is arranged in the downwind duct, and an air outlet is provided on the rear side wall of the cleaning chamber, and the air outlet extends to be connected to the front end of the drying chamber, and the rear end of the drying chamber is connected to the upper end of the telescopic hose; the drying chamber, the telescopic hose, the downwind duct and the cleaning chamber form an airflow circulation duct under the action of the micro fan.

[0007] Furthermore, the filter assembly includes a filter frame, a drying plate and a filter plate, the filter plate and the drying plate are respectively clamped at the front and rear ends of the filter frame, the filter frame can be detachably inserted into the drying chamber, the bottom surface of the drying chamber is provided with a first magnet, the bottom end of the filter frame is provided with a second magnet, and the filter frame and the drying chamber are fixed by magnetic attraction.

[0008] Furthermore, the drying plate includes a fixing frame and a plurality of desiccants placed in the fixing frame.

[0009] Furthermore, a storage cavity is opened on the inner front side of the shell cover, and cleaning liquid is stored in the storage cavity. A conduit is connected between the bottom of the storage cavity and the side wall of the cleaning cavity. A micro liquid pump for conveying the cleaning liquid is arranged on the conduit, and the cleaning liquid is sprayed onto the cleaning brush from the conduit.

[0010] Furthermore, a through hole is provided on the top of the shell cover, and the through hole is connected to the storage cavity so that cleaning liquid can be added into the storage cavity through the through hole. A blocking block is threadedly connected to the through hole, and a sealing ring that can abut against the inner wall of the through hole is sleeved on the top edge of the blocking block.

[0011] Furthermore, the cleaning brush is in an annular structure, a rotating plate is rotatably provided on the top surface of the cleaning chamber, the rotating shaft of the rotating plate is connected to the motor transmission, the cleaning brush is arranged on the bottom surface of the rotating plate, and a plurality of flexible cleaning strips are arranged in the middle of the bottom surface of the rotating plate. The cleaning strips are used to extend into the middle of the earplug part of the hearing aid to adhere to and clean the inner wall thereof.

[0012] Furthermore, the top surface of the cleaning brush is provided with a Velcro hook surface, the bottom surface of the rotary plate is provided with a Velcro hair surface corresponding to the Velcro hook surface, and the cleaning brush and the rotary plate are detachably connected.

[0013] Furthermore, there are two hearing aids, and a receiving cavity is provided on both sides of the left and right sides of the box body, and a cleaning brush is provided in the upper cavity on both sides, and a transmission belt is respectively provided between the output shaft of the motor and the rotating shafts of the cleaning brushes on both sides, and a lithium battery is provided inside the shell, and the lithium battery is electrically connected to the charging contacts and various electrical components, and a charging port electrically connected to the lithium battery is provided on the side end of the shell for charging the lithium battery.

[0014] Furthermore, matching card slots and card blocks are respectively provided at two corners of the front side of the shell and two corners of the front side of the shell cover, and the third magnet and the fourth magnet are respectively embedded in the card slots and the card blocks.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention has a compact structure and reasonable design. When the hearing aid is placed in the housing for charging, the ear plug part can scrape off the ear canal secretions thereon through the rotating cleaning brush and cleaning strip, and the ear canal secretions are blown into the drying chamber for treatment through the direct airflow. The circulating airflow can also absorb moisture from the hearing aid, maintain a dry charging and storage environment, and effectively extend the service life of the hearing aid. 2. The present invention integrates these multiple functions into the same device, allowing users to dry and clean the hearing aid while charging, simplifying the daily maintenance process, effectively removing dirt from the surface of the hearing aid, keeping the device clean, thereby reducing the risk of infection and protecting the user's ear canal health.

[0016] 3. The integrated box adopts a humanized design and simplifies the operation steps. Users no longer need to worry about how to properly dry or clean the hearing aid. The device can automatically complete these functions, which improves the convenience of use and is especially suitable for the elderly and users with limited mobility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of a structure for drying and charging a hearing aid according to the present invention; Figure 2It is a front view of a hearing aid drying and charging integrated structure of the present invention; Figure 3 It is a schematic diagram of the interior of the shell cover of the present invention; Figure 4 It is a schematic diagram of the interior of the housing of the present invention; Figure 5 It is a schematic diagram of the assembly of the filter assembly of the present invention; Figure 6 This is a schematic diagram of disassembling the filter assembly of the present invention; Figure 7 It is a schematic diagram of a cleaning brush of the present invention.

[0018] In the figure, hearing aid 1, shell 2, shell cover 3, upper cavity 4, lower cavity 5, receiving cavity 6, charging contact 7, cleaning cavity 8, cleaning brush 9, motor 10, drying device 11, micro fan 111, drying cavity 112, filter assembly 113, air outlet 114, telescopic hose 115, lower air duct 116, air outlet 117, filter frame 1131, drying plate 1132, filter plate 1133, storage cavity 12, duct 13, micro liquid pump 14, through hole 15, blocking block 16, sealing ring 17, rotating plate 18, cleaning strip 19, Velcro surface 20, transmission belt 21, lithium battery 22, card slot 23, card block 24. DETAILED DESCRIPTION

[0019] 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.

[0020] like Figure 1 and Figure 2 As shown, a structure for drying and charging a hearing aid 1 includes a box body and at least one hearing aid 1, wherein the box body includes a shell body 2 and a shell cover 3 connected to the shell body 2, wherein the shell cover 3 and the shell body 2 are respectively provided with an upper cavity 4 and a lower cavity 5 adapted to the upper and lower surfaces of the hearing aid 1, and when the shell cover 3 is closed with the shell body 2, the upper cavity 4 and the lower cavity 5 are connected to form a receiving cavity 6 for receiving the hearing aid 1, and a charging contact 7 is provided on the bottom surface of the lower cavity 5, and a charging interface adapted to the charging contact 7 is provided on the lower surface of the hearing aid 1, and when the hearing aid 1 is placed in the receiving cavity 6, the charging interface abuts against the charging contact 7 and forms an electrical connection, so that current is input to the hearing aid 1 through the charging contact 7 for charging; A cleaning chamber 8 is opened in the upper cavity 4 corresponding to the earplug part of the hearing aid 1, and a cleaning brush 9 is rotatably arranged on the top surface of the cleaning chamber 8. A motor 10 is installed inside the shell cover 3, and the motor 10 is transmission-connected to the rotating shaft of the cleaning brush 9 to drive the cleaning brush 9 to rotate. A drying device 11 is arranged inside the shell cover 3, and the drying device 11 is communicated with the cleaning chamber 8. When the hearing aid 1 is placed in the receiving chamber 6, its earplug part is located in the cleaning chamber 8, and the cleaning brush 9 is covered on the surface of the earplug part. The cleaning brush 9 can rotate to scrape off the stains on the earplug part, and at the same time, the drying device 11 extracts the stains and water vapor that fall off in the cleaning chamber 8.

[0021] See also Figure 2 and Figure 3 As shown, the drying device 11 includes a micro fan 111, a drying chamber 112 and a filter assembly 113. The top surface of the shell cover 3 is provided with a drying chamber 112, and the filter assembly 113 is arranged in the drying chamber 112 to absorb dirt and moisture entering the air; the top surface of the shell 2 is located at the outer peripheral area of ​​the earplug part of the hearing aid 1 and is provided with a plurality of air outlet holes 114, and when the shell cover 3 and the shell 2 are covered, the air outlet holes 114 are located inside the cleaning chamber 8, and a telescopic hose 115 is embedded and connected at the hinge of the shell cover 3 and the shell 2, and the upper end of the telescopic hose 115 is connected to the shell cover 3, and the lower end of the telescopic hose 115 is connected to the shell cover 3. The end is connected to the shell body 2; a downwind duct 116 is provided inside the shell body 2, one end of the downwind duct 116 is connected to each air outlet 114, and the other end is connected to the telescopic hose 115, and the micro fan 111 is arranged in the downwind duct 116, and an air outlet 117 is provided on the rear side wall of the cleaning chamber 8, and the air outlet 117 extends to be connected to the front end of the drying chamber 112, and the rear end of the drying chamber 112 is connected to the upper end of the telescopic hose 115; the drying chamber 112, the telescopic hose 115, the downwind duct 116 and the cleaning chamber 8 form an airflow circulation duct under the action of the micro fan 111; After the shell cover 3 and the shell body 2 are closed, the micro fan 111 starts to work, firstly blowing the air in the downwind duct 116 directly into the cleaning chamber 8 through the air outlet 114, and then the airflow entering the cleaning chamber 8 enters the drying chamber 112 under the negative pressure of the micro fan 111, and the airflow will carry the impurities in the cleaning chamber 8, the flying debris scraped off the cleaning brush 9 and the moisture in the chamber into the drying chamber 112, and after the stains and water vapor are filtered and adsorbed by the filter component 113, they are returned to the downwind duct 116 through the telescopic hose 115, and the cycle is continued in sequence, and finally the stains and water vapor in the cleaning chamber 8 are blown into the drying chamber 112 to ensure that the cleaning chamber 8 is clean and dry.

[0022] See also Figure 3 and Figure 6As shown, the filter assembly 113 includes a filter frame 1131, a drying plate 1132 and a filter plate 1133. The filter plate 1133 and the drying plate 1132 are respectively clamped at the front and rear ends of the filter frame 1131. The filter frame 1131 can be detachably inserted into the drying chamber 112. The bottom surface of the drying chamber 112 is provided with a first magnet, and the bottom end of the filter frame 1131 is provided with a second magnet. The filter frame 1131 and the drying chamber 112 are fixed by magnetic attraction. The drying plate 1132 includes a fixing frame and a plurality of desiccants placed in the fixing frame. The airflow entering the drying chamber 112 will first be filtered and adhered to the dirt by the filter plate 1133, and then the filtered airflow will pass through the filter plate 1133 and flow into the drying plate 1132, where the moisture in the air will be adsorbed by the drying plate 1132. After using for a period of time, the user can take out the filter frame 1131, thereby removing the old drying plate 1132 and the filter plate 1133, and replacing them with new drying plate 1132 and filter plate 1133 to avoid affecting the filtering efficiency.

[0023] See also Figure 3 , Figure 5 and Figure 6 As shown, a storage chamber 12 is provided at the front side of the shell cover 3, and a cleaning liquid is stored in the storage chamber 12. A conduit 13 is connected between the bottom of the storage chamber 12 and the side wall of the cleaning chamber 8. A micro liquid pump 14 for conveying the cleaning liquid is provided on the conduit 13, and the cleaning liquid is sprayed from the conduit 13 onto the cleaning brush 9; A through hole 15 is formed on the top of the shell cover 3, and the through hole 15 is connected to the storage chamber 12 so that cleaning liquid can be added into the storage chamber 12 through the through hole 15. A blocking block 16 is threadedly connected to the through hole 15, and a sealing ring 17 that can abut against the inner wall of the through hole 15 is sleeved on the top edge of the blocking block 16; When cleaning, the cleaning liquid can be sprayed onto the cleaning brush 9 through the micro liquid pump 14 to wet the cleaning brush 9, so that the cleaning brush 9 can better remove the dirt and oil stains on the earplug head. The amount of cleaning liquid sprayed is not large. After a period of air circulation, the cleaning brush 9 quickly becomes dry again, thereby preventing the water vapor of the cleaning liquid from penetrating into the hearing aid 1 and causing damage. See also Figure 2 , Figure 3 and Figure 7As shown, the cleaning brush 9 is annular in structure, a rotary plate 18 is rotatably provided on the top surface of the cleaning cavity 8, the rotating shaft of the rotary plate 18 is drivingly connected to the motor 10, the cleaning brush 9 is arranged on the bottom surface of the rotary plate 18, a plurality of flexible cleaning strips 19 are arranged in the middle of the bottom surface of the rotary plate 18, the cleaning strips 19 are used to extend into the middle of the earplug part of the hearing aid 1 to adhere and clean the inner wall of the middle part, the top surface of the cleaning brush 9 is provided with a Velcro hook surface, the bottom surface of the rotary plate 18 is provided with a Velcro fur surface 20 corresponding to the Velcro hook surface, and the cleaning brush 9 and the rotary plate 18 are detachably connected; The cleaning brush 9 is used to clean the surface of the earplug. After the lower surface of the hearing aid 1 is placed in the lower cavity 5 and the shell cover 3 is closed, the upper surface of the hearing aid 1 is placed in the upper cavity 4, and the earplug is located in the cleaning cavity 8 and fits with the cleaning brush 9. The cleaning brush 9 is driven to rotate by the motor 10, so as to scrape off the ear canal secretions and dust on the surface of the earplug; The cleaning strip 19 can be extended into the sound guide port in the middle of the earplug, so that the earwax secretions on the inner wall of the sound guide port can be adhered by the rotation of the cleaning strip 19; when the user uses it next time, when the shell cover 3 is opened, the earwax secretions will adhere to the surface of the cleaning strip 19 as the cleaning strip 19 is pulled out. After the user takes out the hearing aid 1 and closes the shell cover 3 again, the micro fan 111 can be used for a period of time to blow away the stains on the cleaning strip 19 through circulating air and dry it for the next use; The cleaning brush 9 is designed to be detachable, so the user can remove it and clean or replace it after using it for a period of time, and the assembly and disassembly is simple and convenient.

[0024] See also Figure 1 and Figure 2 As shown, there are two hearing aids 1, and a receiving cavity 6 is provided on the left and right sides of the box body, and a cleaning brush 9 is provided in the upper cavity 4 on both sides, and a transmission belt 21 is respectively sleeved between the output shaft of the motor 10 and the rotating shaft of the cleaning brushes 9 on both sides. A lithium battery 22 is provided inside the shell 2, and the lithium battery 22 is electrically connected to the charging contacts 7 and various electrical components. A charging port electrically connected to the lithium battery 22 is provided at the side end of the shell 2 for charging the lithium battery 22.

[0025] See also Figure 1 As shown, matching card slots 23 and card blocks 24 are respectively provided at the two front corners of the shell 2 and the two front corners of the shell cover 3, and the third magnet and the fourth magnet are respectively embedded in the card slots 23 and the card blocks 24. The magnetic attraction design of the card slots 23 and the card blocks 24 can ensure that the shell cover 3 and the shell 2 are tightly covered and can be effectively isolated from the outside air, thereby preventing the outside air from being drawn in during air circulation.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hearing aid drying and charging integrated structure, comprising a box body and at least one hearing aid, characterized in that: The box body comprises a shell, and a shell cover connected to the shell in an opening and closing manner. The shell cover and the shell are respectively provided with an upper cavity and a lower cavity adapted to the upper and lower surfaces of the hearing aid. When the shell cover is closed with the shell, the upper cavity and the lower cavity are connected to form a receiving cavity for accommodating the hearing aid. The bottom surface of the lower cavity is provided with a charging contact. The lower surface of the hearing aid is provided with a charging interface adapted to the charging contact. When the hearing aid is placed in the receiving cavity, the charging interface abuts against the charging contact and forms an electrical connection, so that current is input into the hearing aid through the charging contact for charging. A cleaning cavity is provided in the upper cavity corresponding to the earplug part of the hearing aid, and a cleaning brush is rotatably provided on the top surface of the cleaning cavity. A motor is installed inside the shell cover, and the motor is transmission-connected to the rotating shaft of the cleaning brush to drive the cleaning brush to rotate. A drying device is provided inside the shell cover, and the drying device is communicated with the cleaning cavity. When the hearing aid is placed in the receiving cavity, its earplug part is located in the cleaning cavity, and the cleaning brush is covered on the surface of the earplug part. The cleaning brush can scrape off the stains on the earplug part by rotation, and at the same time, the drying device extracts the stains and water vapor that fall off in the cleaning cavity.

2. The integrated structure for drying and charging a hearing aid according to claim 1, characterized in that: The drying device comprises a micro fan, a drying chamber and a filter assembly, the drying chamber is provided on the top surface of the shell cover, and the filter assembly is arranged in the drying chamber to absorb dirt and moisture entering the air; the top surface of the shell is located in the peripheral area of ​​the earplug part of the hearing aid and is surrounded by a plurality of air outlets, and when the shell cover and the shell cover are closed, the air outlets are located inside the cleaning chamber, and a telescopic hose is embedded and connected at the hinge between the shell cover and the shell, the upper end of the telescopic hose is connected to the shell cover, and the lower end is connected to the shell; a downwind duct is provided inside the shell, one end of the downwind duct is connected to each air outlet, and the other end is connected to the telescopic hose, and the micro fan is arranged in the downwind duct, and an air outlet is provided on the rear side wall of the cleaning chamber, and the air outlet extends to be connected to the front end of the drying chamber, and the rear end of the drying chamber is connected to the upper end of the telescopic hose; the drying chamber, the telescopic hose, the downwind duct and the cleaning chamber form an airflow circulation duct under the action of the micro fan.

3. The integrated structure for drying and charging a hearing aid according to claim 2, characterized in that: The filter assembly includes a filter frame, a drying plate and a filter plate, the filter plate and the drying plate are respectively clamped at the front and rear ends of the filter frame, the filter frame can be detachably inserted into the drying chamber, the bottom surface of the drying chamber is provided with a first magnet, the bottom end of the filter frame is provided with a second magnet, and the filter frame and the drying chamber are fixed by magnetic attraction.

4. The integrated structure for drying and charging a hearing aid according to claim 3, characterized in that: The drying plate comprises a fixing frame and a plurality of desiccants arranged in the fixing frame.

5. The integrated structure for drying and charging a hearing aid according to claim 1, characterized in that: A storage cavity is provided on the front inner side of the shell cover, and cleaning liquid is stored in the storage cavity. A conduit is connected between the bottom of the storage cavity and the side wall of the cleaning cavity, and a micro liquid pump for conveying the cleaning liquid is arranged on the conduit. The cleaning liquid is sprayed onto the cleaning brush from the conduit.

6. The integrated structure for drying and charging a hearing aid according to claim 1, characterized in that: A through hole is provided on the top of the shell cover, and the through hole is connected to the storage cavity so that cleaning liquid can be added into the storage cavity through the through hole. A blocking block is threadedly connected to the through hole, and a sealing ring that can abut against the inner wall of the through hole is sleeved on the top edge of the blocking block.

7. The integrated structure for drying and charging a hearing aid according to claim 1, characterized in that: The cleaning brush has an annular structure, and a rotating plate is rotatably provided on the top surface of the cleaning cavity. The rotating shaft of the rotating plate is transmission-connected to the motor, and the cleaning brush is arranged on the bottom surface of the rotating plate. A plurality of flexible cleaning strips are arranged in the middle of the bottom surface of the rotating plate. The cleaning strips are used to extend into the middle of the earplug part of the hearing aid to adhere to and clean the inner wall thereof.

8. The integrated structure for drying and charging a hearing aid according to claim 7, characterized in that: The top surface of the cleaning brush is provided with a Velcro hook surface, the bottom surface of the rotary plate is provided with a Velcro hair surface corresponding to the Velcro hook surface, and the cleaning brush and the rotary plate are detachably connected.

9. The integrated structure for drying and charging a hearing aid according to claim 1, characterized in that: There are two hearing aids, and a receiving cavity is provided on the left and right sides of the box body, and a cleaning brush is provided in the upper cavity on both sides. A transmission belt is respectively sleeved between the output shaft of the motor and the rotating shafts of the cleaning brushes on both sides. A lithium battery is provided inside the shell, and the lithium battery is electrically connected to the charging contacts and various electrical components. A charging port electrically connected to the lithium battery is provided on the side end of the shell for charging the lithium battery.

10. The integrated structure for drying and charging a hearing aid according to claim 1, characterized in that: Two corner positions on the front side of the shell and two corner positions on the front side of the shell cover are respectively provided with matching card slots and card blocks, and the third magnet and the fourth magnet are respectively embedded in the card slots and the card blocks.

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