CN218684804U - Waterproof structure for electric toothbrush - Google Patents

Abstract

The utility model relates to a waterproof construction that electric toothbrush used, including the electric toothbrush drive shaft, elastic waterproof cover, utensil notched casing, the one end setting of electric toothbrush drive shaft is in the recess, the other end sealing cover of electric toothbrush drive shaft is equipped with the fixture block, waterproof cover's wherein one end is the head end, the other end is the tail end, the head end of waterproof cover is closely overlapped and is established on the fixture block, waterproof cover's head end is provided with closely the cover and establishes on waterproof cover and with the first holding ring of fixture block joint, waterproof cover's the inseparable cover of tail end establishes on the surface of casing, waterproof cover's tail end is provided with closely the cover and establishes on waterproof cover and with casing threaded connection's second holding ring. The utility model discloses a only need be in the one end trompil of shell, only need lift waterproof cover off during the maintenance, and waterproof cover and shell detachable connections, easy maintenance, waterproof cover back waterproof nature of changing can also be unchangeable, has greatly prolonged electric toothbrush's life.

Description

Waterproof structure for electric toothbrush

Technical Field

The utility model belongs to the technical field of oral care equipment technique and specifically relates to a waterproof construction that electric toothbrush used.

Background

In recent years, electric toothbrushes have become more and more popular, and the electric toothbrush drives a brush head to vibrate by utilizing a high-speed vibrating movement to achieve a tooth cleaning effect.

The shell of the existing electric toothbrush is generally in a hollow tubular shape, through holes need to be formed in two ends of the shell, the two ends of the shell are sealed by waterproof sleeves made of rubber or silica gel, the waterproof sleeves at the two ends need to be detached during maintenance, and the maintenance difficulty is increased. The waterproof sleeve is general in wear resistance and oxidation resistance and easy to deform or corrode, and the waterproof performance of the conventional electric toothbrush is poor after the waterproof sleeve is replaced, so that the service life of the electric toothbrush is extremely short.

SUMMERY OF THE UTILITY MODEL

To the current not enough, the utility model provides a waterproof construction that electric toothbrush used.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a waterproof construction that electric toothbrush used, includes electric toothbrush drive shaft, elastic waterproof cover, has the notched casing, the one end setting of electric toothbrush drive shaft is in the recess, the other end seal cover of electric toothbrush drive shaft is equipped with the fixture block, the wherein one end of waterproof cover is the head end, and the other end is the tail end, the head end of waterproof cover closely overlaps and establishes on the fixture block, the head end of waterproof cover is provided with closely to establish and establishes the first holding ring on waterproof cover and with the fixture block joint, the tail end of waterproof cover closely establishes on the surface of casing, the tail end of waterproof cover is provided with closely to establish and establishes on waterproof cover and with casing threaded connection's second holding ring.

Preferably, the waterproof jacket has a length of a portion between the first positioning ring and the second positioning ring which is greater than a distance between the first positioning ring and the second positioning ring.

Preferably, the head end and the tail end of the waterproof jacket extend with a convex part or a concave part respectively, the fixture block or the first positioning ring is provided with a concave part or a convex part which is matched and clamped with the convex part or the concave part at the head end of the waterproof jacket, and the shell or the second positioning ring is provided with a concave part or a convex part which is matched and clamped with the convex part or the concave part at the tail end of the waterproof jacket.

Preferably, the concave part or the convex part is an annular concave part or an annular convex part, and the concave part or the convex part is coaxially arranged with the driving shaft of the electric toothbrush.

Preferably, the second positioning ring is inwardly contracted near one end of the first positioning ring to form an annular contraction portion.

Preferably, the constriction is a transparent constriction.

Preferably, the constricted portion is provided with a plurality of through holes.

Preferably, the length of the fixture block in the axial direction is equal to the length of the first positioning ring in the axial direction, and an end face of the fixture block, which is far away from the housing, and an end face of the first positioning ring, which is far away from the housing, are located on the same plane.

Preferably, the shell and the second positioning ring are provided with anti-skid threads on the surfaces contacting with the waterproof sleeve.

Preferably, the drive shaft and the housing of the electric toothbrush are coaxially disposed.

The beneficial effects of the utility model reside in that: the utility model discloses a only need be in the one end trompil of shell, only need lift waterproof cover off during the maintenance, and waterproof cover and shell detachable connections, easy maintenance, waterproof cover back waterproof nature of changing can also be unchangeable, has greatly prolonged electric toothbrush's life.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

part names and serial numbers in the figure: 1-electric toothbrush driving shaft 11-head end 12-tail end 2-waterproof sleeve 21-bulge 3-shell 31-groove 4-fixture block 5-first positioning ring 6-second positioning ring 61-contraction part 611-through hole 62-anti-skid screw thread.

Detailed Description

To more clearly illustrate the objects, technical solutions and advantages of the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be further described with reference to the accompanying drawings and embodiments, and clearly described in the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention. Furthermore, what is mentioned in the present invention is as follows: the terms "center", "upper", "lower", "left", "right", "front", "back", "inner", "outer", "horizontal", "vertical", and the like are used only with reference to the orientation or positional relationship as shown in the attached drawings, or the orientation or positional relationship as the utility model is usually placed when in use, and are used only for the convenience of clearly describing the utility model, but do not indicate or imply that the device or element must have a specific orientation, and therefore, should not be construed as limiting the utility model.

The terms "first," "second," "third," and the like are used solely to distinguish one from another in the description and are not to be construed as indicating or implying relative importance, and therefore should not be construed as limiting the invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment of the utility model is shown in fig. 1, a waterproof construction that electric toothbrush used, including electric toothbrush drive shaft 1, elastic waterproof cover 2, casing 3 with recess 31, electric toothbrush drive shaft 1's one end sets up in recess 31, electric toothbrush drive shaft 1's other end seal cover is equipped with fixture block 4, waterproof cover 2's wherein one end is head end 11, the other end is tail end 12, waterproof cover 2's head end 11 closely overlaps and establishes on fixture block 4, waterproof cover 2's head end 11 is provided with closely to establish on waterproof cover 2 and with the first holding ring 5 of fixture block 4 joint, waterproof cover 2's tail end 12 closely establishes on casing 3's surface, waterproof cover 2's tail end 12 is provided with closely to establish on waterproof cover 2 and with 3 threaded connection's of casing second holding ring 6.

In the in-service use, electric toothbrush's components and parts all set up in recess 31, and electric toothbrush's vibrating motor drive electric toothbrush drive shaft 1 vibrates, and waterproof cover 2 is sealed with the recess 31 opening of casing 3, makes the inside confined space that forms of recess 31, can be isolated at casing 3 outsides with steam, protects electric toothbrush's components and parts.

Further, as shown in fig. 1, the upper portion of the first positioning ring 5 is fixedly clamped with the upper portion of the fixture block 4, and the lower portion of the first positioning ring 5 is matched with the lower portion of the fixture block 4 to press and fix the head end 11 of the waterproof jacket 2, so that the head end 11 of the waterproof jacket 2 is more stably connected with the fixture block 4; the lower part of the second positioning ring 6 is fixedly connected with the shell 3 in a spiral mode, the upper part of the second positioning ring 6 is matched with the shell 3 to fix the tail end 12 of the waterproof sleeve 2 in a pressing mode, and therefore the tail end 12 of the waterproof sleeve 2 is connected with the shell 3 more stably.

In this embodiment, fixture block 4 and electric toothbrush drive shaft 1 integrative injection moulding, the leakproofness between 4 and the electric toothbrush drive shaft 1 of assurance fixture block that can be better.

In this embodiment, the hardness of the head end 11 and the tail end 12 of the waterproof jacket 2 is higher, so that the waterproof jacket 2 can be fixed more firmly; the hardness of the middle part of the waterproof sleeve 2 is lower, so that the driving shaft 1 of the electric toothbrush can move better.

In this embodiment, the fixture block 4 is provided with a plastic protrusion 21, and the first positioning ring 5 is provided with a slot engaged with the plastic protrusion 21.

In this embodiment, the waterproof case 2 is made of rubber or silicone.

In a further improvement, as shown in fig. 1, the length of the part of the waterproof jacket 2 between the first positioning ring 5 and the second positioning ring 6 is greater than the distance between the first positioning ring 5 and the second positioning ring 6, and the waterproof jacket 2 between the first positioning ring 5 and the second positioning ring 6 is in a loose state, so that the waterproof jacket 2 is not pulled when the electric toothbrush driving shaft 1 vibrates, and the waterproof jacket 2 is stably connected with the fixture block 4 and the shell 3.

Further improvement, as shown in fig. 1, the head end 11 and the tail end 12 of the waterproof jacket 2 extend to form a protruding portion 21 or a recessed portion, the first positioning ring 5 or the clamping block 4 is provided with a recessed portion 21 or a protruding portion 21 which is matched and clamped with the protruding portion 21 or the recessed portion of the head end 11 of the waterproof jacket 2, the second positioning ring 6 or the shell 3 is provided with a recessed portion 21 or a protruding portion 21 which is matched and clamped with the protruding portion 21 or the recessed portion of the tail end 12 of the waterproof jacket 2, and the waterproof jacket 2 can be connected with the clamping block 4 and the shell 3 more stably through the protruding portion 21 and the recessed portion which are clamped with each other.

Further, as shown in fig. 1, the recessed portion or the protruding portion 21 is an annular recessed portion or an annular protruding portion 21, the recessed portion or the protruding portion 21 is coaxially disposed with the driving shaft 1 of the electric toothbrush, and the recessed portion or the protruding portion 21 is annular, so that the contact area between the waterproof sleeve 2 and the fixture block 4 and the contact area between the waterproof sleeve 2 and the housing 3 can be increased, the gap between the waterproof sleeve 2 and the fixture block 4 and the gap between the waterproof sleeve and the housing 3 can be reduced, the connection between the waterproof sleeve 2 and the fixture block 4 and the connection between the waterproof sleeve and the housing 3 can be more stable, and good waterproof performance can be ensured.

In a further improvement, as shown in fig. 1, the second positioning ring 6 is inwardly contracted at an end close to the first positioning ring 5 to form an annular contracted portion 61, and the contracted portion 61 can resist the impact of partial external force to protect the waterproof jacket 2.

In a further improvement, as shown in fig. 1, the contraction part 61 is a transparent contraction part 61, so that the state of the waterproof jacket 2 can be better observed, and the accumulation of pollutants can be prevented.

In a further improvement, as shown in fig. 1, the shrinking portion 61 is provided with a plurality of through holes 611, so that water can be drained better, water can be prevented from accumulating in a gap between the shrinking portion 61 and the waterproof jacket 2, and the waterproof jacket 2 can be cleaned more conveniently.

In a further improvement, as shown in fig. 1, the length of the fixture block 4 in the axial direction is equal to the length of the first positioning ring 5 in the axial direction, and an end surface of the fixture block 4 far away from the housing 3 and an end surface of the first positioning ring 5 far away from the housing 3 are located on the same plane, so that the fixture block 4 and the first positioning ring 5 are more attractive and have stronger integrity.

Further improvement, as shown in fig. 1, the shell 3 and the second positioning ring 6 are provided with anti-slip threads 62 on the surface contacting with the waterproof jacket 2, so that the contact area between the shell 3 and the second positioning ring 6 and the waterproof jacket 2 can be increased, the gap between the shell 3 and the second positioning ring 6 and the waterproof jacket 2 can be reduced, the connection between the shell 3 and the second positioning ring 6 and the waterproof jacket 2 is more stable, and good waterproof performance can be ensured.

It will be understood that modifications and variations are possible to those skilled in the art in light of the above teachings and that all such modifications and variations are considered to be within the purview of the invention as set forth in the appended claims.

Claims (10)

1. A waterproof structure for an electric toothbrush, characterized in that: including electric toothbrush drive shaft, elastic waterproof cover, the notched casing of utensil, the one end setting of electric toothbrush drive shaft is in the recess, the other end seal cover of electric toothbrush drive shaft is equipped with the fixture block, one of them end of waterproof cover is the head end, and the other end is the tail end, the head end of waterproof cover closely overlaps and establishes on the fixture block, the head end of waterproof cover is provided with closely to overlap and establishes on waterproof cover and with the first holding ring of fixture block joint, the tail end of waterproof cover closely overlaps and establishes on the surface of casing, the tail end of waterproof cover is provided with closely to overlap and establishes and sheathe in and with casing threaded connection's second holding ring at waterproof cover.

2. The waterproof structure for an electric toothbrush according to claim 1, wherein the waterproof case has a portion between the first positioning ring and the second positioning ring which has a length greater than a distance between the first positioning ring and the second positioning ring.

3. The waterproof structure for the electric toothbrush according to claim 1, wherein the head end and the tail end of the waterproof case are respectively extended with a convex portion or a concave portion, the fixture block or the first positioning ring is provided with a concave portion or a convex portion which is engaged with the convex portion or the concave portion at the head end of the waterproof case in a matching manner, and the housing or the second positioning ring is provided with a concave portion or a convex portion which is engaged with the convex portion or the concave portion at the tail end of the waterproof case in a matching manner.

4. The waterproof structure for an electric toothbrush according to claim 3, wherein the recess or the projection is an annular recess or an annular projection, and the recess or the projection is coaxially provided with the drive shaft of the electric toothbrush.

5. The waterproof structure for an electric toothbrush according to claim 1, wherein the second retaining ring is inwardly contracted near an end of the first retaining ring to form an annular contracted portion.

6. The waterproof structure for an electric toothbrush according to claim 5, wherein the constricted portion is a transparent constricted portion.

7. The waterproof structure for an electric toothbrush according to claim 5, wherein the constricted portion is provided with a plurality of through holes.

8. The waterproof structure for an electric toothbrush according to claim 1, wherein the length of the locking block in the axial direction is equal to the length of the first positioning ring in the axial direction, and an end surface of the locking block at one end away from the housing and an end surface of the first positioning ring at one end away from the housing are located on the same plane.

9. The waterproof structure for an electric toothbrush according to claim 1, wherein the case and the second positioning ring are provided with anti-slip threads on surfaces thereof which are in contact with the waterproof case.

10. The waterproof structure for an electric toothbrush according to claim 1, wherein the drive shaft of the electric toothbrush and the housing are coaxially disposed.

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