CN218636135U - Electric toothbrush - Google Patents

Abstract

The utility model provides an electric toothbrush, relating to the technical field of toothbrushes and solving the problem that the brush head excessively extends into the oral cavity in the prior art, the utility model comprises a brush handle and a brush head arranged on the brush handle; the toothbrush also comprises an outer sleeve sleeved at the top of the toothbrush handle; the diameter of the outer ring edge of the outer sleeve is larger than the outer diameter of the bottom end of the brush head. Compared with the prior art, an overcoat is established to the position cover that is located its top on this kind of electric toothbrush's the brush holder, and the outer lane of overcoat is greater than the external diameter of brush head bottom along the diameter, has formed a structure that plays the effect of blockking on the brush holder, can prevent that the brush head from excessively stretching into oral cavity injury throat, and the limited children of specially adapted safety consciousness and action ability use.

Description

Electric toothbrush

Technical Field

The utility model relates to a toothbrush technical field, specific electric toothbrush that says so.

Background

The electric toothbrush realizes the high-frequency vibration of the brush head through the vibration of the motor shaft, and the effect of deeply cleaning teeth is achieved. The electric toothbrush is highly popular with consumers due to its excellent cleaning effect and automatic cleaning function, and is widely used not only in adult groups but also in children groups. At present many electric toothbrush do not fully consider the danger that children may exist in the use, because children's safety consciousness and action ability are limited, can't grasp electric toothbrush's the degree of depth that stretches into the oral cavity very well, do not set up under the condition of necessary safeguard measure at electric toothbrush, lead to electric toothbrush's brush head excessively to stretch into the oral cavity easily, injure the throat, take place danger. Present electric toothbrush has all adopted the wireless module of charging in order to obtain outstanding water-proof effects, and the wireless charging coil that the wireless module of charging was used can make product cost increase, and the structure between wireless module of charging and the handle is also more complicated with the assembly simultaneously, also can increase product cost. The components in the prior electric toothbrush handle do not form an integral assembly, and the components are respectively and independently arranged on the corresponding parts in the handle, so that the product is difficult to assemble and has higher cost.

SUMMERY OF THE UTILITY MODEL

One of the purposes of the utility model is to design an electric toothbrush for solving the problem that the brush head excessively extends into the oral cavity.

The utility model discloses a following technical scheme realizes:

an electric toothbrush comprises a brush handle and a brush head arranged on the brush handle; the toothbrush also comprises an outer sleeve sleeved at the top of the toothbrush handle; the diameter of the outer ring edge of the outer sleeve is larger than the outer diameter of the bottom end of the brush head.

When adopting above-mentioned setting structure, on the brush holder, establish an overcoat at the position cover that is located its top, and the outer lane of overcoat is greater than the external diameter of brush head bottom along the diameter, has formed a structure that plays the effect of blockking on the brush holder, can prevent that the brush head from excessively stretching into the oral cavity and injuring the throat, and the specially adapted safety consciousness and the limited children of action ability use.

Further for better realization the utility model discloses, adopt the following structure that sets up very much: the outer sleeve is a profiling structural part of a mushroom cap and comprises a mushroom upper shell sleeved on the brush handle and a mushroom lower shell sleeved on the brush handle, wherein the mushroom upper shell is small in top and large in bottom; the mushroom lower shell is connected with the mushroom upper shell to seal the opening at the bottom of the mushroom lower shell.

When the structure is adopted, the outer sleeve in the shape of the mushroom-like mushroom cap can play a role in blocking and beautifying the appearance of the electric toothbrush.

Further for better realization the utility model discloses, adopt following structure that sets up very much: the mushroom upper shell is embedded with a mushroom decoration piece which is designed by copying with the mushroom scale, and the outer surface of the mushroom decoration piece is in continuous relation with the outer surface of the mushroom upper shell.

When the structure is adopted, the appearance of the coat is further beautified by the mushroom decorating part.

Further: the mushroom decoration is a silica gel structural part formed on the mushroom upper shell by adopting a secondary injection molding process.

Further for better realization the utility model discloses, adopt the following structure that sets up very much: the brush handle comprises a handle, a bracket, a motor component, a waterproof rubber sleeve, a battery, a main circuit board, a charging component and a bottom cover; through holes are formed in the top end and the bottom end of the handle; the main circuit board is fixedly connected to the side part of the bracket; the motor assembly is fixedly arranged in the mounting groove at the top of the bracket and is connected with the main circuit board; the battery is fixedly arranged in the bottom mounting groove of the bracket and is connected with the main circuit board; the bracket is arranged in the handle and is fixedly connected with the handle; the charging assembly is fixedly arranged on the bottom cover and connected with the main circuit board, and the bottom cover is fixedly connected with the bottom end of the handle; the waterproof rubber sleeve is sleeved on a motor shaft of the motor assembly in an interference fit mode, and the outer circular surface of the waterproof rubber sleeve is in interference fit with the through hole in the top end of the handle to achieve waterproof sealing.

When the structure is adopted, the bracket, the motor component, the battery and the main circuit board form a whole and are integrally arranged in the handle as the movement component, so that the difficulty of assembling all parts in the handle can be reduced, and the cost is reduced.

Further for better realization the utility model discloses, adopt the following structure that sets up very much: the charging assembly is arranged as a wired charging assembly; a charging port is formed in the bottom end of the bottom cover; the department of charging of bottom is connected with the apron that charges, the apron that charges including charge mouthful apron with connect in the waterproof silica gel of apron of flap top surface charges, one side of the waterproof silica gel of apron through vertical flexible glue post with the bottom is connected, the outside of the waterproof silica gel of apron with it realizes waterproof sealing to charge mouthful wall interference fit.

When adopting above-mentioned setting up the structure, set up the subassembly that charges into ordinary wired subassembly that charges the cost is reduced to can simplify the structure between subassembly and the handle that charges, the mouthful apron that charges through being equipped with waterproof silica gel of apron adopts the interference fit mode to realize waterproof sealing, has reduced the complexity of assembly, changes the equipment, also makes waterproof with low costs and reliable.

Further for better realization the utility model discloses, adopt the following structure that sets up very much: the bottom cover is sleeved at the bottom end of the handle, and the inner side of the bottom cover is connected with the outer side of the handle in a sealing mode through a waterproof silica gel ring.

When adopting above-mentioned structure that sets up, the subassembly that charges sets up to wired charging assembly back, need not complicated cooperation structure between the bottom of bottom and handle, and waterproof sealing is carried out to the waterproof silica gel circle of accessible for waterproof with low costs and reliable, also change the equipment.

Further for better realization the utility model discloses, adopt the following structure that sets up very much: a gap is formed between one side of the charging port cover plate and the charging port wall, and the gap is used for allowing fingers to extend in to pry the charging port cover plate.

When adopting above-mentioned structure that sets up, the existence in clearance makes the mouth apron that charges can be pried open more easily, is convenient for charge.

Further for better realization the utility model discloses, adopt the following structure that sets up very much: the charging assembly comprises a charging small plate and an interface pressing plate; the charging small plate is arranged in an installation groove formed in the bottom cover and is connected with the main circuit board; the interface pressing plate is fixedly connected with the bottom cover, and the charging small plate is fixedly abutted and pressed in a mounting groove formed in the bottom cover.

The utility model has the advantages of it is following and beneficial effect:

the utility model discloses in, on the brush holder, establish an overcoat at the position cover that is located its top, and the outer lane of overcoat is greater than the external diameter of brushing first bottom along the diameter, has formed a structure that plays the effect of blockking on the brush holder, can prevent that the brush head from excessively stretching into oral cavity injury throat, and specially adapted safety consciousness and the limited children of action ability use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that 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 according to these drawings without creative efforts.

Fig. 1 shows an external structure of an electric toothbrush;

FIG. 2 illustrates a top view of the powered toothbrush;

FIG. 3 isbase:Sub>A cross-sectional view A-A of FIG. 2;

FIG. 4 is a cross-sectional view B-B of FIG. 2;

figure 5 shows the structure of the movement assembly;

fig. 6 shows a bottom structure of the electric toothbrush.

Labeled as:

1. a brush head;

2. a brush handle; 21. a handle; 21a, a silica gel key; 21b, a light guide; 22. a support; 22a, a first tenon; 22b, a second tenon; 23. a motor assembly; 24. a waterproof rubber sleeve; 25. a battery; 26. a main circuit board; 26a, a control switch; 27. a charging assembly; 27a, a charged platelet; 27b, an interface pressure plate; 28. a bottom cover; 28a, a charging port cover plate; 28b, cover plate waterproof silica gel; 28c, a gap; 29. a waterproof silica gel ring;

3. a jacket; 31. mushroom upper shells; 32. mushroom inferior shell; 32a, a ring slot; 33. a mushroom decoration;

4. a brush head holder;

5. motor apron.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.

Example 1:

an electric toothbrush capable of preventing a brush head from excessively extending into an oral cavity, as shown in fig. 1, 2, 3, 4 and 6, is particularly configured in the following structure:

the electric toothbrush can prevent the brush head from excessively extending into the oral cavity to hurt the throat, and is particularly suitable for children.

The electric toothbrush comprises a brush holder 2, a brush head 1 which is detachably arranged on the brush holder 2 and an outer sleeve 3 which is fixedly sleeved on the top of the brush holder 2.

The sheath 3 is essentially characterized in that the diameter of its outer rim is greater than the outer diameter of the base end of the brush head 1 to form a barrier at the distal end of the brush head.

In order to make the appearance of the electric toothbrush more beautiful and more popular with users, especially children. The electric toothbrush adopts the shape of mushroom, specifically, the outer sleeve 3 is set as a profiling structural part of mushroom cap, and the brush handle 2 serves as a mushroom handle. The outer casing 3 is formed by splicing two parts, including a mushroom upper shell 31 and a mushroom lower shell 32. The mushroom upper shell 31 is gradually opened from top to bottom in a shape with a small top and a big bottom, and the top of the mushroom upper shell is sleeved at the top of the brush handle 2; the top end of the mushroom upper shell 31 is arranged flush with the top end of the brush handle 2. The mushroom inferior valve 32 is the part of a bottom flange class approximately, and on brush holder 2 was located to its whole cover, through the mutual joint axial positioning of unsmooth draw-in groove between its top and the mushroom epitheca 31, the outer edge of its flange was along passing through the mutual joint of unsmooth draw-in groove with the end of mushroom epitheca 31, and the inboard of mushroom inferior valve 32 is provided with ring groove 32a, and the joint is fixed through the bulge loop realization joint that ring groove 32a and brush holder 2 outer wall set up to mushroom inferior valve 32. The connection position between the mushroom upper shell 31 and the mushroom lower shell 32 is connected and fixed by ultrasonic welding. A cavity is formed between the inner side of the mushroom upper case 31 and the mushroom lower case 32, and the bottom opening of the mushroom upper case 31 is closed by the flange of the mushroom lower case 32.

In this embodiment, on brush holder 2, establish an overcoat 3 at the position cover that lies in its top, and the outer lane of overcoat 3 is greater than the external diameter of brush head 1 bottom along the diameter, has formed a structure that plays the effect of blockking on brush holder 2, can prevent that the brush head from excessively stretching into the oral cavity and injuring the throat, and specially adapted safety consciousness and the limited children of action ability use. The outer sleeve 3 imitating the shape of the mushroom cap can beautify the appearance of the electric toothbrush while playing a role of blocking, not only plays a role of blocking the brush head to prevent the brush head from being excessively plugged into the oral cavity, but also plays a role of a decoration part, beautifies the appearance of the electric toothbrush, and makes the electric toothbrush more attractive under the condition of ensuring safety.

In a preferred embodiment of the present embodiment, a plurality of through holes are formed in the mushroom top case 31, and a mushroom decoration 33 is inserted into each of the through holes, wherein the mushroom decoration 33 is a molded structure designed to simulate mushroom scales. The mushroom decoration 33 is formed in the embedding hole of the mushroom upper shell 31 by adopting a secondary injection molding process, and the mushroom decoration 33 is a soft silica gel structural member to provide rich hand feeling and provide the children with the fun. The outer surface of the mushroom garnish 33 does not protrude from the outer surface of the mushroom upper shell 31 and is in continuous relation with the outer surface of the mushroom upper shell 31. The arrangement of the mushroom decoration 33 further enriches the structural level and the hand feeling of the coat 3 and beautifies the appearance of the coat 3.

Example 2:

the present embodiment is further optimized on the basis of the above embodiments, and further, in order to better implement the present invention, as shown in fig. 1 to 6, the following setting structure is particularly adopted:

in the embodiment, the brush handle 2 of the electric toothbrush has lower production cost.

The brush handle 2 of the electric toothbrush comprises a handle 21, a bracket 22, a motor assembly 23, a waterproof rubber sleeve 24, a battery 25, a main circuit board 26, a charging assembly 27 and a bottom cover 28.

The handle 21 is a cylindrical structure member having through holes at the top and bottom ends thereof, which imitates the stipe of a fungus. A silica gel button 21a and a light-transmitting light guide 21b are embedded in the handle 21.

The top and bottom of the bracket 22 are respectively provided with a top mounting groove for mounting the motor assembly 23 and a bottom mounting groove for mounting the battery 25. The bracket 22 is provided with a first tenon 22a at opposite sides of the top end thereof, and a second tenon 22b at opposite sides of the bottom end thereof. The support 22 is integrally arranged in the inner cavity of the handle 21, the inner cavity structure of the handle 21 can centralize the support 22 to prevent the support 22 from deflecting, and the second tenon 22b at the bottom end of the support 22 is clamped with the corresponding clamping groove arranged at the bottom of the handle 21 to realize fixed connection between the two.

The motor assembly 23 is mounted in the top mounting slot of the bracket 22. A motor shaft of the motor assembly 23 extends out of a through hole at the top end of the handle 21 and is inserted with a brush head support 4, and a brush head 1 is sleeved on the brush head support 4. The top end of the bracket 22 is provided with a motor cover plate 5, and the motor cover plate 5 is in snap connection with a first tenon 22a at the top end of the bracket 22 through corresponding components, so that the motor assembly 23 is fixed in the top mounting groove of the bracket 22, and the longitudinal freedom degree of a motor in the motor assembly 23 is limited. The connecting wires of the motor assembly 23 extend out of the fixing holes of the bracket 22 and are fixed on the main circuit board 26 by welding to be electrically connected with the main circuit board 26, and the main circuit board 26 provides required power for the motor assembly 23 and can control the motor in the motor assembly 23 to run or stop.

The waterproof rubber sleeve 24 is a soft silicone piece, and is sleeved on the motor shaft of the motor assembly 23 through an inner hole in an interference fit manner to form a waterproof sealing structure between the motor shaft and the waterproof rubber sleeve 24, and the outer circular surface of the waterproof rubber sleeve 24 is in interference fit with the through hole at the top end of the handle 21 to realize waterproof sealing, so that water is prevented from entering the interior of the handle 21 from the top end thereof.

The battery 25 is integrally arranged in the bottom mounting groove of the bracket 22 and fixed through a buckle, and the conducting strips at the upper end and the lower end of the battery 25 are connected with the main circuit board 26 to realize circuit communication.

The main circuit board 26 provides the necessary conventional control functions, on which the control switch 26a and the LED lamp reflecting the battery level and control mode are provided, and the main circuit board 26 is fixed to the side of the bracket 22 by a snap structure. The control switch 26a of the motor main circuit board 26 can be started, and when the motor is started, the vibration of the motor shaft of the motor assembly 23 drives the brush head 1 to vibrate, so that the function of cleaning teeth is realized. The control switch 26a is aligned and contacted with the silicone key 21a, so that the control switch 26a is pressed by pressing the silicone key 21a, the LED lamp is aligned with the light guide 21b, and the light emitted by the LED lamp can be observed by a user through the light guide 21b, so that the mode of the electric toothbrush and the power condition of the battery 25 can be known.

The charging component 27 is fixedly installed in an installation groove formed in the inner side of the top of the bottom cover 28 through screws, and a connecting line of the charging component 27 is electrically connected with the main circuit board 26 in a welding mode.

The bottom cover 28 is sleeved on the bottom end of the handle 21 and fixedly connected with the bottom end, and the specific connection mode can be a conventional mode such as clamping or screwing.

In this embodiment, the bracket 22, the motor assembly 23, the battery 25, and the main circuit board 26 form a whole, and are integrally disposed in the handle 21 as a movement assembly, so that the difficulty of assembling the components in the handle 21 can be reduced, and the cost can be reduced.

Example 3:

this embodiment is further optimized on the basis of above-mentioned embodiment, and further for better realization the utility model discloses, adopt the following structure that sets up very much:

in this embodiment, the charging assembly 27 of the electric toothbrush is a wired charging assembly to reduce the cost.

Specifically, in order to fit the wire charging assembly, a charging port is provided at a central position of the bottom end of the bottom cover 28, and the charging port communicates with the charging socket of the charging assembly 27. A charging cover is connected to the charging port of the bottom cover 28. The charging cover plate comprises a charging port cover plate 28a and cover plate waterproof silica gel 28b connected to the top surface of the charging port cover plate 28a, and the charging port cover plate 28a and the cover plate waterproof silica gel 28b in the charging cover plate are formed by secondary injection molding. The waterproof silica gel 28b of apron is mild silica gel structure, and the mounting hole interference of its one side through vertical flexible glue post and bottom 28 is inserted and is joined in marriage and be connected, and the waterproof silica gel 28b of apron can be about flexible glue post upset or linear motion to seal or expose the charging socket that charges subassembly 27, when the charging socket is sealed to the waterproof silica gel 28b of apron, the outside of the waterproof silica gel 28b of apron realizes waterproof sealing with the mouthful wall interference fit that charges.

The charging assembly 27 includes a charging platelet 27a that is directly connected to the main wiring board 26 and an interface platen 27b. The charging small plate 27a is installed in the installation groove of the bottom cover 28, and the interface pressing plate 27b is fixedly connected to the top of the bottom cover 28 through screws and fixedly presses the charging small plate 27a in the installation groove of the bottom cover 28, so that the longitudinal freedom degree of the charging small plate 27a is limited.

The inner side of the bottom cover 28 is connected with the outer side of the handle 21 in a waterproof and sealed manner through a waterproof silicone ring 29 sleeved on the handle 21.

In this embodiment, the charging assembly 27 is provided as a common wired charging assembly, so that the cost is reduced, the structure between the charging assembly 27 and the handle 21 can be simplified, and the charging port cover plate 28a provided with the cover plate waterproof silica gel 28b is in interference fit with the handle to realize waterproof sealing. After the charging assembly 27 is set as a wired charging assembly, a complex matching structure is not needed between the bottom cover 28 and the bottom end of the handle 21, and waterproof sealing can be performed through the waterproof silicone ring 29. Above, like this, reduced the complexity of assembly, the equipment is changeed, also makes waterproof with low costs and reliable.

As a preferred embodiment of this embodiment, a gap 28c is formed between one side of the charging port cover plate 28a and the charging port wall, and the gap 28c is large enough to allow a finger or a fingernail to be inserted and the charging port cover plate 28a to be levered by prying to drive the cover plate waterproof silicone 28b to move and finally release the waterproof seal with the charging port wall. The presence of the gap 28c enables the charging port cover 28a to be pried open more easily for charging.

The utility model discloses an electric toothbrush has adopted the silica gel sealing member to reach waterproof sealing's effect through interference fit's form to adopted ordinary charging mode to reduce manufacturing cost, avoided adopting wireless charging to lead to the problem that the cost is on the high side. Meanwhile, the movement assembly is arranged in the handle 21 as a whole, so that the assembly difficulty is reduced, and the cost is reduced. Meanwhile, the mushroom-shaped outer sleeve 3 is adopted, so that the brush head 1 is prevented from excessively extending into the oral cavity to hurt the throat.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention.

Claims (7)

1. The utility model provides an electric toothbrush, includes brush holder (2) and installs brush head (1) in brush holder (2), its characterized in that: the toothbrush also comprises an outer sleeve (3) sleeved on the top of the toothbrush handle (2); the diameter of the outer ring edge of the outer sleeve (3) is larger than the outer diameter of the bottom end of the brush head (1);

the outer sleeve (3) comprises a mushroom upper shell (31) sleeved on the brush handle (2) and having a small top and a large bottom and a mushroom lower shell (32) sleeved on the brush handle (2); the mushroom lower shell (32) is connected with the mushroom upper shell (31) to seal the opening at the bottom of the mushroom lower shell.

2. An electric toothbrush according to claim 1, wherein: the mushroom upper shell (31) is embedded with a mushroom decoration (33), and the outer surface of the mushroom decoration (33) is in continuous relation with the outer surface of the mushroom upper shell (31).

3. An electric toothbrush according to claim 1 or 2, wherein: the brush handle (2) comprises a handle (21), a bracket (22), a motor assembly (23), a waterproof rubber sleeve (24), a battery (25), a main circuit board (26), a charging assembly (27) and a bottom cover (28);

through holes are formed in the top end and the bottom end of the handle (21);

the main circuit board (26) is fixedly connected to the side part of the bracket (22);

the motor component (23) is fixedly arranged in a mounting groove at the top of the bracket (22) and is connected with the main circuit board (26);

the battery (25) is fixedly arranged in the bottom mounting groove of the bracket (22) and is connected with the main circuit board (26);

the bracket (22) is arranged in the handle (21) and is fixedly connected with the handle (21);

the charging component (27) is fixedly arranged on the bottom cover (28) and connected with the main circuit board (26), and the bottom cover (28) is fixedly connected with the bottom end of the handle (21);

the waterproof rubber sleeve (24) is sleeved on a motor shaft of the motor assembly (23), and the outer circular surface of the waterproof rubber sleeve (24) is in waterproof sealing with the through hole in the top end of the handle (21).

4. An electric toothbrush according to claim 3, wherein: the charging assembly (27) is arranged as a wired charging assembly; a charging port is formed at the bottom end of the bottom cover (28);

the department of charging of bottom (28) is connected with the apron that charges, the apron that charges including charge mouthful apron (28 a) and connect in the waterproof silica gel (28 b) of apron of the mouthful apron (28 a) top surface that charges, one side of the waterproof silica gel (28 b) of apron through vertical flexible glue post with bottom (28) are connected, the outside of the waterproof silica gel (28 b) of apron with the wall interference fit that charges realizes waterproof sealing.

5. An electric toothbrush according to claim 4, wherein: the bottom cover (28) is sleeved at the bottom end of the handle (21), and the inner side of the bottom cover (28) is connected with the outer side of the handle (21) in a sealing mode through a waterproof silica gel ring (29).

6. An electric toothbrush according to claim 4, wherein: a gap (28 c) is formed between one side of the charging port cover plate (28 a) and the charging port wall, and the gap (28 c) is used for allowing a finger to extend in to pry the charging port cover plate (28 a).

7. An electric toothbrush according to claim 4, wherein: the charging assembly (27) comprises a charging platelet (27 a) and an interface pressure plate (27 b); the small charging plate (27 a) is arranged in a mounting groove formed in the bottom cover (28) and is connected with the main circuit board (26); the interface pressing plate (27 b) is fixedly connected with the bottom cover (28) to fixedly press the small charging plate (27 a) in a mounting groove formed in the bottom cover (28).

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