Tooth whitening liquid conveying instrument

Abstract

The utility model provides a tooth whitening liquid delivery instrument which comprises a whitening liquid storage bottle assembly, a handle assembly and a protective cover, and the whitening liquid storage bottle assembly is used for storing whitening liquid; the handle assembly comprises a shell and a driving assembly arranged in the shell, and one end of the whitening liquid storage bottle assembly is arranged on the shell; when the driving assembly executes the first action, the driving assembly applies an acting force to the whitening liquid storage bottle assembly so as to quantitatively extrude the whitening liquid in the whitening liquid storage bottle assembly; when the driving assembly executes the second action, the driving assembly relieves the acting force on the whitening liquid storage bottle assembly; the protection cover covers the whitening liquid storage bottle assembly, is connected with the shell and is used for protecting the whitening liquid storage bottle assembly. The driving assembly applies acting force to the whitening liquid storage bottle assembly, so that the whitening liquid in the whitening liquid storage bottle assembly is quantitatively squeezed out, the tooth whitening effect of the whitening liquid is guaranteed, and the situation that the whitening liquid is excessively squeezed out when the whitening liquid is manually squeezed out, and consequently the whitening liquid is wasted is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of teeth care instruments, in particular to a teeth whitening liquid delivery instrument. Background Art

[0002] Currently, most of the liquid delivery devices in the teeth whitening kits on the market are manual mechanisms. The problem is that it is not easy to extrude the whitening liquid in a quantitative manner. The whitening liquid is expensive, and excessive extrusion will cause waste and is not convenient for consumers to use.

[0003] The Chinese utility model patent with the announcement number CN211410720U discloses a teeth whitening device, which includes a base, a support rod connected to the base at the lower end, an arm rod connected transversely to the support rod, and a lamp head fixedly connected to the arm rod. The device is small in size, easy to transport and easy to assemble. However, it does not realize quantitative extrusion of whitening liquid. Utility Model Content

[0004] The purpose of the embodiment of the utility model is to provide a teeth whitening device to solve the problem that the whitening solution in the prior art cannot be quantitatively extruded.

[0005] The embodiment of the utility model adopts the following technical scheme: a tooth whitening liquid delivery device, comprising:

[0006] A whitening liquid storage bottle assembly, which is used to store whitening liquid;

[0007] The handle assembly comprises a housing and a driving assembly disposed in the housing, one end of the whitening liquid storage bottle assembly is disposed on the housing; when the driving assembly performs a first action, the driving assembly applies a force to the whitening liquid storage bottle assembly to quantitatively squeeze out the whitening liquid in the whitening liquid storage bottle assembly; when the driving assembly performs a second action, the driving assembly releases the force applied to the whitening liquid storage bottle assembly;

[0008] A protective cover is arranged outside the whitening liquid storage bottle assembly and connected to the shell, and is used to protect the whitening liquid storage bottle assembly.

[0009] By applying force to the whitening liquid storage bottle assembly through the driving assembly, the whitening liquid in the whitening liquid storage bottle assembly can be quantitatively squeezed out, which not only ensures the whitening effect of the whitening liquid on the teeth, but also avoids the waste of whitening liquid caused by excessive squeezing when manually squeezing out the whitening liquid.

[0010] In some embodiments, the whitening liquid storage bottle assembly includes a storage bottle, a brush and a piston, one end of the brush is arranged inside one end of the storage bottle, and the other end of the brush is located outside the storage bottle; the piston is sealed and arranged at the other end of the storage bottle;

[0011] The driving assembly includes a motor, a screw and a threaded push rod, wherein the screw is connected to the output end of the motor, and the threaded push rod is threadedly connected to the screw and moves along the axial direction of the screw when the screw rotates;

[0012] The first action is that the motor rotates in a first direction, and when the motor rotates in the first direction, the screw is driven to rotate in the first direction, thereby driving the threaded push rod to move toward the direction close to the piston, and pushing the piston into the storage bottle, so that the whitening liquid in the storage bottle can be quantitatively squeezed out to the brush;

[0013] The second action is that the motor rotates along the second direction. When the motor rotates along the second direction, it drives the screw to rotate along the second direction, thereby driving the threaded push rod to move in a direction away from the piston, thereby causing the threaded push rod to exit the storage bottle, wherein the second direction is opposite to the first direction.

[0014] Through the threaded cooperation between the screw and the threaded push rod, when the motor rotates in the first direction, the screw is driven to rotate in the first direction, and then the threaded push rod is driven to move toward the piston, and the piston is pushed into the storage bottle, so that the whitening liquid in the storage bottle can be quantitatively squeezed out to the brush, and then squeezed onto the teeth through the brush. When the motor rotates in the second direction, the threaded push rod is withdrawn from the storage bottle, so that after the whitening liquid storage bottle assembly is replaced, the threaded push rod can again quantitatively squeeze out the whitening liquid under the drive of the motor and the screw.

[0015] In some embodiments, the drive assembly also includes a positioning block, which is arranged in the outer shell and limited to the inner wall of the outer shell; the center of the screw is provided with a center hole arranged along its axis, and a positioning column is provided on one side of the positioning block, and the positioning column extends into the center hole of the screw to position the screw.

[0016] The positioning block is used to limit the screw to prevent the screw from shaking during rotation, which would affect the coordination between the screw and the threaded push rod, and further affect the quantitative extrusion of the whitening liquid. At the same time, it can also prevent the screw shaking from affecting the user's experience.

[0017] In some embodiments, the threaded push rod is in a hollow cylindrical shape, and at least two avoidance grooves are arranged on the side wall of the threaded push rod along its axial direction; the at least two avoidance grooves penetrate the side wall of the threaded push rod along the radial direction of the threaded push rod;

[0018] The positioning block can extend out of the threaded push rod from the at least two avoidance grooves respectively.

[0019] The arrangement of the avoidance groove on the threaded push rod enables the threaded push rod to avoid the positioning block during movement, thereby preventing interference between the threaded push rod and the positioning block.

[0020] In some embodiments, the drive assembly further comprises a push rod cover for pushing the piston to move;

[0021] One end of the threaded push rod close to the whitening liquid storage bottle assembly is open, and the at least two avoidance grooves penetrate through the open end to form an opening;

[0022] The push rod cover is buckled on one end of the threaded push rod and blocks the exposed portion and the opening.

[0023] The push rod cover blocks the opening of the hollow threaded push rod and the openings of at least two avoidance grooves, and is used to move synchronously with the threaded push rod to push the piston to operate and realize quantitative extrusion of the whitening liquid. At least two avoidance grooves penetrate to the opening and form an opening to facilitate the assembly of the positioning block.

[0024] In some embodiments, the drive assembly further includes a reset assembly;

[0025] The threaded push rod has a starting position and an ending position. When the storage bottle is filled with whitening liquid and the push rod cover abuts against the piston, the threaded push rod is located at the starting position; when the whitening liquid in the storage bottle is squeezed out and the push rod cover abuts against the piston, the threaded push rod is located at the ending position;

[0026] When the threaded push rod is located at the end position and the driving assembly performs the second action, the reset assembly is used to apply a force to the threaded push rod to make it move in a direction away from the piston;

[0027] When the threaded push rod is located at the starting position and the driving assembly performs the first action, the reset assembly can also be used to apply a force to the threaded push rod to make it move toward the direction close to the piston.

[0028] The reset assembly is used to apply a force in a corresponding direction to the threaded push rod when the threaded push rod is at the end position or the starting position, so that the threaded push rod can return to the required position to prevent the screw from getting stuck.

[0029] In some embodiments, the reset assembly includes a first reset spring and a second reset spring;

[0030] When the threaded push rod moves to the end position and the start position, the threaded push rod is separated from the screw rod;

[0031] The threaded push rod is provided with an annular limit platform at one end thereof for connecting with the screw rod, the first return spring is sleeved outside the threaded push rod, one end of the first return spring is provided on the positioning block, and the other end of the first return spring abuts against the table surface on one side of the limit platform; when the threaded push rod is located at the end position and the driving assembly performs the second action, the first return spring is used to apply a force to the threaded push rod to make it move in a direction away from the piston, so that the threaded push rod is restored to be threadedly connected with the screw rod;

[0032] One end of the second return spring abuts against the table surface on the other side of the limit table, and the other end of the second return spring is fixed in the shell. When the threaded push rod is located at the starting position and the drive assembly performs the first action, the second return spring is used to apply a force to the threaded push rod to make it move toward the direction close to the piston, so that the threaded push rod is restored to be threadedly connected with the screw rod.

[0033] When the threaded push rod moves to the end position, the threaded connection relationship between the threaded push rod and the screw is released to prevent the threaded push rod from continuing to move when the motor rotates in the first direction, causing the screw to get stuck; and when the drive assembly performs the second action, under the action of the first return spring, the threaded push rod is restored to the threaded connection relationship with the screw, so that the threaded push rod can move to the starting position. Similarly, when the threaded push rod moves to the starting position, the threaded connection relationship between the threaded push rod and the screw is released to prevent the threaded push rod from continuing to move when the motor rotates in the first direction, causing the screw to get stuck; and when the drive assembly performs the first action, under the action of the second return spring, the threaded push rod is restored to the threaded connection relationship with the screw, so that the threaded push rod can move toward the piston.

[0034] In some embodiments, the drive assembly further includes a first travel switch and a second travel switch;

[0035] The first travel switch and the second travel switch are respectively arranged at two ends of the housing;

[0036] When the threaded push rod moves to the end position, the threaded push rod triggers the first travel switch, and the first travel switch sends a first control signal to stop the driving component from performing the first action;

[0037] When the threaded push rod moves to the starting position, the threaded push rod triggers the second travel switch, and the second travel switch sends a second control signal to stop the driving component from performing the second action.

[0038] The first travel switch and the second travel switch are used to prevent the screw from getting stuck when the threaded push rod moves to the end position and the start position, thereby preventing the instrument from working.

[0039] In some embodiments, the tooth whitening liquid delivery device further includes an inner bracket and a battery, the motor is disposed on the inner bracket, and the battery is connected to the motor to power the motor.

[0040] The inner bracket can make the motor be stably arranged in the outer shell, and the battery can be used to power the motor.

[0041] In some embodiments, a switch button and a reset button are provided on the housing. When the switch button is pressed, the drive component performs a first action. When the reset button is pressed, the drive component performs a second action.

[0042] The setting of the switch button and the reset button facilitates the control of the driving component to perform the first action and the second action.

[0043] The beneficial effects of the embodiments of the utility model are:

[0044] By applying force to the whitening liquid storage bottle assembly through the driving assembly, the whitening liquid in the whitening liquid storage bottle assembly can be quantitatively squeezed out, which not only ensures the whitening effect of the whitening liquid on the teeth, but also avoids the waste of whitening liquid caused by excessive squeezing when manually squeezing out the whitening liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0046] Figure 1 The utility model is a structural schematic diagram of a tooth whitening liquid delivery device.

[0047] Figure 2 The utility model is a schematic diagram of the disassembled structure of the whitening solution storage bottle assembly, the handle assembly and the protective cover in the tooth whitening solution delivery device.

[0048] Figure 3 This is an exploded view of the structure of the tooth whitening liquid delivery device of the present invention.

[0049] Figure 4 It is a schematic diagram of the cross-sectional structure of the tooth whitening liquid delivery device when the threaded push rod of the utility model is located at the starting position.

[0050] Figure 5 It is a schematic diagram of the cross-sectional structure of the tooth whitening liquid delivery device when the threaded push rod of the utility model is located at the end position.

[0051] Figure 6 This is another structural explosion diagram of the tooth whitening liquid delivery device of the present utility model.

[0052] Figure 7 for Figure 6 The schematic diagram of the cross-sectional structure of the teeth whitening liquid delivery device shown is when the threaded push rod is in the starting position.

[0053] Figure 8 for Figure 6 The schematic diagram of the cross-sectional structure of the teeth whitening liquid delivery device shown is when the threaded push rod is at the terminal position.

[0054] Figure numerals: 1. brush; 2. storage bottle; 3. sealing ring; 4. piston; 5. top cover; 6. threaded push rod; 6-1. push rod cover; 6-2. avoidance groove; 7. positioning block; 7-1. positioning column; 8. first return spring; 9. screw; 10. motor; 11. second return spring; 12. battery; 13. inner bracket; 14. tail cover; 15. circuit board; 16. handle; 17. switch button; 18. reset button; 19. protective cover. DETAILED DESCRIPTION

[0055] Various aspects and features of the present invention are described herein with reference to the accompanying drawings.

[0056] It should be understood that various modifications may be made to the embodiments of the present application. Therefore, the above description should not be considered as limiting, but only as an example of the embodiments. Other modifications within the scope and spirit of the present utility model will occur to those skilled in the art.

[0057] The accompanying drawings, which are included in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the general description of the present invention given above and the detailed description of the embodiments given below, are used to explain the principles of the present invention.

[0058] These and other characteristics of the invention will become apparent from the following description of a preferred form of embodiment given as a non-limiting example, with reference to the accompanying drawings.

[0059] It should also be understood that, although the present invention has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the present invention with certainty, which have features such as the above-mentioned "utility model content" and are therefore within the scope of protection defined thereby.

[0060] The above and other aspects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0061] Specific embodiments of the present invention are described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments applied for are merely examples of the present invention, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that obscure the present invention. Therefore, the specific structural and functional details applied for herein are not intended to be limiting, but merely serve as the basis and representative basis for the above-mentioned "utility model content" to teach those skilled in the art to use the present invention in a variety of ways with substantially any suitable detailed structure.

[0062] This specification may use the phrases "in one embodiment", "in another embodiment", "in yet another embodiment" or "in other embodiments", all of which may refer to one or more of the same or different embodiments according to the present invention.

[0063] In order to solve the problems in the background technology, the utility model provides a teeth whitening liquid delivery device.

[0064] Combination Figure 1 and Figure 2 The tooth whitening solution delivery device includes a whitening solution storage bottle assembly, a handle assembly and a protective cover 19.

[0065] The whitening liquid storage bottle assembly is used to store the whitening liquid, and the whitening liquid can be squeezed out from the storage bottle assembly.

[0066] Combination Figure 3 The handle assembly includes a shell and a drive assembly disposed in the shell, and one end of the whitening liquid storage bottle assembly is disposed on the shell. For example, the whitening liquid storage bottle assembly can be buckled on the shell, that is, the whitening liquid storage bottle assembly is detachably connected to the shell. When the whitening liquid of the whitening liquid storage bottle assembly is completely extruded, the whitening liquid storage bottle assembly can be removed from the shell, and the whitening liquid storage bottle assembly containing the whitening liquid is installed on the shell. When the drive assembly performs the first action, the drive assembly applies a force to the whitening liquid storage bottle assembly to quantitatively extrude the whitening liquid in the whitening liquid storage bottle assembly. For example, each time the drive assembly performs the first action, the time when the first action is executed is set to a certain time, that is, the whitening liquid extrusion time in the whitening liquid storage bottle assembly is set to a timing, such as 1 second to 5 seconds, to achieve quantitative extrusion of the whitening liquid. When the whitening liquid extrusion time is set to 5 seconds, the dosage of the whitening liquid extruded is larger than when the whitening liquid extrusion time is set to 1 second. Of course, it can be understood that the extrusion time of the whitening liquid can be set as needed. When the driving component performs the second action, the driving component releases the force applied to the whitening liquid storage bottle component, and the whitening liquid stops being squeezed out of the whitening liquid storage bottle component.

[0067] The protective cover 19 is arranged outside the whitening liquid storage bottle assembly and connected to the shell to protect the whitening liquid storage bottle assembly. The protective cover 19 and the shell can also be connected in a detachable manner by snaps. When the whitening liquid needs to be squeezed out, the protective cover 19 is removed from the shell. After use, the protective cover 19 is snapped back onto the shell to prevent the whitening liquid from leaking or drying up and affecting the use of the tooth whitening liquid delivery device and the waste of the whitening liquid. To facilitate the installation of the drive assembly and the connection between the protective cover 19 and the shell, the shell can include a hollow handle 16, a top cover 5 and a tail cover 14. The top cover 5 is detachably buckled on one end of the handle 16, and the tail cover 14 is detachably buckled on the other end of the handle 16; the protective cover 19 is connected to the top cover 5 by snaps.

[0068] The embodiment of the utility model applies a force to the whitening liquid storage bottle assembly through the driving assembly to realize quantitative extrusion of the whitening liquid in the whitening liquid storage bottle assembly, which not only ensures the whitening effect of the whitening liquid on teeth, but also avoids the waste of whitening liquid caused by excessive extrusion when manually extruding the whitening liquid. At the same time, when the driving assembly performs the second action, the driving assembly releases the force on the whitening liquid storage bottle assembly and resets, so that the teeth whitening liquid delivery device can perform the first action again through the driving assembly after the whitening liquid storage bottle assembly is replaced to extrude the whitening liquid quantitatively, that is, the whitening liquid delivery device can be reused.

[0069] In one embodiment of the present application, a whitening liquid storage bottle assembly includes a storage bottle 2, a brush 1 and a piston 4. A through hole is provided at one end of the storage bottle 2, through which the brush 1 passes, and one end of the brush 1 is provided inside one end of the storage bottle 2, and the other end of the brush 1 is located outside the storage bottle 2. When the whitening liquid in the storage bottle 2 is squeezed, it can be squeezed out from the storage bottle 2 to the brush 1, and then applied to the teeth through the brush 1. Of course, the aperture of the through hole is equivalent to the outer diameter of the brush 1, and the brush 1 is fastened to the through hole to prevent the whitening liquid from leaking from the through hole. The piston 4 is sealed at the other end of the storage bottle 2, and specifically, the piston 4 can be sealed at the other end of the storage bottle 2 through the sealing ring 3. When the piston 4 is subjected to an external force, it can be pushed into the storage bottle 2, and while the piston 4 is pushed into the storage bottle 2, the whitening liquid in the storage bottle 2 is squeezed out.

[0070] Combination Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8The driving assembly includes a motor 10, a screw 9 and a threaded push rod 6, wherein the motor 10 can be a micro reduction motor 10. The screw 9 is connected to the output end of the motor 10, and the threaded push rod 6 is threadedly connected to the screw 9. For example, at least a portion of the screw 9 is provided with an external thread, and one end of the threaded push rod 6 connected to the screw 9 is provided with an internal thread, and the external thread of the screw 9 cooperates with the internal thread of the threaded push rod 6 to achieve a threaded connection between the two. The threaded push rod 6 moves along the axial direction of the screw 9 when the screw 9 rotates.

[0071] Specifically, the first action is that the motor 10 rotates in the first direction, and the first direction can be the forward direction of the motor 10, and of course, it can also be the reverse direction of the motor 10. When the motor 10 rotates in the first direction, it drives the screw 9 to rotate in the first direction, and then drives the threaded push rod 6 to move in the direction close to the piston 4, and pushes the piston 4 into the storage bottle 2. When the piston 4 pushes into the storage bottle 2, the whitening liquid in the storage bottle 2 can be quantitatively squeezed into the brush 1. That is, the first action of the motor 10 rotating in the first direction can be performed multiple times, and the time of each execution is determined. Each time the first action is performed, the whitening liquid is quantitatively squeezed out from the storage bottle 2 once; the user can operate the tooth whitening liquid transmitter according to their own needs to make it perform the first action once or twice or more, thereby achieving one quantitative extrusion or more than two quantitative extrusions of the whitening liquid.

[0072] The second action is that the motor 10 rotates in the second direction. When the first direction is the forward direction of the motor 10, the second direction can be the reverse direction of the motor 10, that is, the second direction is opposite to the first direction. When the motor 10 rotates in the second direction, it drives the screw 9 to rotate in the second direction, thereby driving the threaded push rod 6 to move away from the piston 4, thereby making the threaded push rod 6 withdraw from the storage bottle 2. When the whitening liquid in the storage bottle 2 is completely squeezed out, the motor 10 can perform the second action. The second action can be that the motor 10 continues to rotate in the second direction until the threaded push rod 6 is completely withdrawn from the storage bottle 2. At this time, the whitening liquid storage assembly can be removed from the housing. If necessary, another whitening liquid storage assembly filled with whitening liquid (or the same whitening liquid storage assembly filled with whitening liquid again) can be installed on the housing for use. This is only used as an example and does not constitute a limitation on the scope of protection of the claims.

[0073] Through the threaded cooperation between the screw 9 and the threaded push rod 6, the motor 10 drives the screw 9 to rotate in the first direction when rotating in the first direction, thereby driving the threaded push rod 6 to move toward the direction close to the piston 4, and pushing the piston 4 into the storage bottle 2, so that the whitening liquid in the storage bottle 2 can be quantitatively squeezed out to the brush 1, and then squeezed out onto the teeth through the brush 1. When the motor 10 rotates in the second direction, the threaded push rod 6 withdraws from the storage bottle 2, so that after the whitening liquid storage bottle assembly is replaced, the threaded push rod 6 can again quantitatively squeeze out the whitening liquid driven by the motor 10 and the screw 9.

[0074] In one embodiment of the present application, the drive assembly further includes a positioning block 7, which is arranged in the shell and limited on the inner wall of the shell. Specifically, the shell can be in the shape of a long cylinder, and a platform for limiting the positioning block 7 can be arranged on the inner wall of the shell. The positioning block 7 is limited by the platform in the shell and is limited in the shell along the axial direction of the shell by the platform, and the positioning block 7 can be set as a rectangular plate, which cannot rotate in the shell. The center of the screw 9 is provided with a center hole arranged along its axis, and a positioning column 7-1 is arranged on one side of the positioning block 7. The positioning column 7-1 extends into the center hole of the screw 9 to position the screw 9, prevent the screw 9 from shaking in the shell when rotating, and avoid the shaking of the screw 9 affecting the cooperation between the screw 9 and the threaded push rod 6, thereby affecting the quantitative extrusion of the whitening liquid. At the same time, it can also prevent the shaking of the screw 9 from affecting the user's experience.

[0075] In one embodiment of the present application, again in combination Figure 3 , Figure 4 and Figure 6 The threaded push rod 6 is in a hollow cylindrical shape, and at least two avoidance grooves 6-2 are arranged on the side wall of the threaded push rod 6 along its axial direction. At least two avoidance grooves 6-2 penetrate the side wall of the threaded push rod 6 along the radial direction of the threaded push rod 6.

[0076] The positioning block 7 can extend out of the threaded push rod 6 through at least two avoidance grooves 6-2, respectively, to prevent the positioning block 7 from affecting the axial movement of the threaded push rod 6 along the screw rod 9. That is, the setting of the avoidance groove 6-2 on the threaded push rod 6 can make the threaded push rod 6 avoid the positioning block 7 during the movement, and avoid interference between the threaded push rod 6 and the positioning block 7.

[0077] In one embodiment of the present application, the drive assembly further includes a push rod cover 6 - 1 for pushing the piston 4 to move.

[0078] One end of the threaded push rod 6 close to the whitening liquid storage bottle assembly is open, and at least two avoidance grooves 6-2 pass through the opening to form an opening, so that the positioning block 7 can be installed from the opening into the at least two avoidance grooves 6-2 of the threaded push rod 6, so that the positioning column 7-1 can extend into the center hole of the screw rod 9.

[0079] The push rod cover 6-1 is detachably buckled on one end of the threaded push rod 6 and blocks the opening. When the threaded push rod 6 moves toward the piston 4 along the axial direction of the screw 9, the push rod cover 6-1 can abut against the outer surface of the piston 4. The size of the push rod cover 6-1 can be comparable to that of the piston 4, so that the push rod cover 6-1 can smoothly push the piston 4, so that the piston 4 can be smoothly pushed into the storage bottle 2, thereby achieving smooth quantitative extrusion of the whitening liquid.

[0080] In one embodiment of the present application, the driving component further includes a reset component;

[0081] Among them, the threaded push rod 6 has a starting position and an ending position. When the storage bottle 2 is filled with whitening liquid and the push rod cover 6-1 is against the outer surface of the piston 4, the threaded push rod 6 is located at the starting position; when the whitening liquid in the storage bottle 2 is squeezed out and the push rod cover 6-1 is against the piston 4, the threaded push rod 6 is located at the ending position.

[0082] When the threaded push rod 6 is at the end position and the driving assembly performs the second action, the reset assembly is used to apply a force to the threaded push rod 6 to move it away from the piston 4, so that the threaded push rod 6 is restored to be threadedly connected with the screw rod 9.

[0083] When the threaded push rod 6 is at the starting position and the driving assembly performs the first action, the reset assembly can also be used to apply a force to the threaded push rod 6 to move it toward the direction close to the piston 4, so that the threaded push rod 6 is restored to the threaded connection with the screw rod 9.

[0084] The reset assembly is used to apply a force in a corresponding direction to the threaded push rod 6 when the threaded push rod 6 is at the end position or the start position, so that the threaded push rod 6 can return to the required position and prevent the screw rod 9 from getting stuck.

[0085] In one embodiment of the present application, Figure 3 , Figure 4 and Figure 5 The reset assembly includes a first reset spring 8 and a second reset spring 11.

[0086] When the threaded push rod 6 moves to the end position and the start position, the threaded push rod 6 is separated from the screw rod 9.

[0087] The end of the threaded push rod 6 used for connecting with the screw rod 9 is provided with an annular limit table, the first return spring 8 is sleeved outside the threaded push rod 6, one end of the first return spring 8 is provided on the positioning block 7, and the other end of the first return spring 8 abuts against the table surface on one side of the limit table. When the threaded push rod 6 is at the end position and the driving assembly performs the second action, the first return spring 8 is used to apply a force to the threaded push rod 6 to move it in a direction away from the piston 4, so that the threaded push rod 6 is restored to be threadedly connected with the screw rod 9.

[0088] One end of the second return spring 11 abuts against the table surface on the other side of the limit table, and the other end of the second return spring 11 is fixed in the shell. When the threaded push rod 6 is in the starting position and the driving assembly performs the first action, the second return spring 11 is used to apply a force to the threaded push rod 6 to make it move toward the piston 4, so that the threaded push rod 6 is restored to the threaded connection with the screw rod 9.

[0089] The above process is specifically as follows: when the threaded push rod 6 is in the starting position, the whitening liquid in the whitening liquid storage bottle assembly has been exhausted. At the same time, the threaded connection between the threaded push rod 6 and the screw 9, which were originally meshed together, is released, but the screw 9 is still located in the threaded push rod 6, except that the part of the screw 9 without the external thread corresponds to the internal thread part of the threaded push rod 6. At this time, if the motor 10 continues to perform the first action, the screw 9 will idle, and the threaded push rod 6 will no longer move forward. In order to avoid the threaded push rod 6 from getting stuck, a slight clicking sound is emitted to remind the user to replace a new whitening liquid storage bottle assembly. If the motor 10 performs the second action at this time, under the elastic force of the first reset spring 8, the internal thread of the threaded push rod 6 and the external thread of the screw 9 are meshed together again, and the motor 10 can drive the screw 9 to rotate in the opposite direction, and then drive the threaded push rod 6 to move along the axial direction of the screw 9 away from the piston 4 through the principle of threaded transmission until the threaded push rod 6 moves to the starting position and stops. At this time, the threaded push rod 6 and the screw rod 9 that were originally meshed together disengage again, and the screw rod 9 will idle for a few seconds, and the threaded push rod 6 will no longer move to prevent the threaded push rod 6 from getting stuck. At the same time, a slight clicking sound is emitted to remind the user to remove the empty whitening liquid storage bottle assembly and replace it with a whitening liquid storage bottle assembly filled with whitening liquid. Then, when the whitening liquid is needed, the motor 10 can perform the first action again. Under the elastic force of the second reset spring 11, the internal thread of the threaded push rod 6 and the external thread of the screw rod 9 are re-engaged, and the instrument starts working again, and this cycle repeats.

[0090] At the end of the entire stroke, the threads of the threaded push rod 6 and the screw rod 9 that were originally meshed with each other will be disengaged, thereby generating a period of idling, which is a condition to ensure that the instrument does not get stuck and can work normally. Of course, it can be understood that the mechanism to prevent jamming is not limited to the above-mentioned spring mechanism. This is only used as an example and does not constitute a limitation on the scope of protection of the claims.

[0091] In this embodiment, when the threaded push rod 6 moves to the end position, the threaded connection relationship between the threaded push rod 6 and the screw 9 is released to prevent the threaded push rod 6 from continuing to move when the motor 10 rotates in the first direction, causing the screw 9 to get stuck; and when the drive assembly performs the second action, under the action of the first reset spring 8, the threaded push rod 6 is restored to the threaded connection relationship with the screw 9, so that the threaded push rod 6 can move to the starting position. Similarly, when the threaded push rod 6 moves to the starting position, the threaded connection relationship between the threaded push rod 6 and the screw 9 is released to prevent the threaded push rod 6 from continuing to move when the motor 10 rotates in the first direction, causing the screw 9 to get stuck; and when the drive assembly performs the first action, under the action of the second reset spring 11, the threaded push rod 6 is restored to the threaded connection relationship with the screw 9, so that the threaded push rod 6 can move toward the piston 4.

[0092] In one embodiment of the present application, Figure 6 , Figure 7 and Figure 8 The drive assembly also includes a first travel switch and a second travel switch.

[0093] Wherein, the first travel switch and the second travel switch are respectively arranged at two ends of the shell.

[0094] When the threaded push rod 6 moves to the end position, the threaded push rod 6 triggers the first travel switch, and the first travel switch sends a first control signal to stop the driving component from performing the first action.

[0095] When the threaded push rod 6 moves to the starting position, the threaded push rod 6 triggers the second travel switch, and the second travel switch sends a second control signal to stop the driving component from performing the second action.

[0096] The first travel switch and the second travel switch are used to prevent the screw rod 9 from getting stuck when the threaded push rod 6 moves to the end position and the start position, respectively, so as to prevent the instrument from being unable to work.

[0097] The first stroke switch and the second stroke switch can be set on the basis of setting the reset component, or the first stroke switch and the second stroke switch can be used only to prevent the instrument from getting stuck. Specifically, when the first stroke switch and the second stroke switch are used only to prevent the instrument from getting stuck, the screw 9 and the threaded push rod 6 can always maintain a threaded connection, that is, the threads of the screw 9 and the threaded push rod 6 are always in a meshing state during the working process of the instrument, ensuring the smooth conversion of the forward and reverse rotation of the motor 10 during the working process. A circuit board 15 is also provided in the housing. The first stroke switch and the second stroke switch are used to trigger the first stroke switch or the second stroke switch when the threaded push rod 6 moves to the starting position or the end position, and provide an electronic signal to the circuit board 15. The circuit board 15 controls the action of the motor 10, and then controls the threaded push rod 6 to stop moving, so as to prevent the screw 9 and the threaded push rod 6 from getting stuck and causing the instrument to fail to work properly. The specific working process of the instrument is as follows: when the motor 10 is started and performs the first action, it drives the screw 9 to rotate, and then pushes the threaded push rod 6 from the starting position to the direction close to the piston 4 through the principle of thread transmission, and then pushes the piston 4 in the whitening liquid storage bottle assembly to move into the storage bottle 2 and extrude the teeth whitening liquid. Each time the motor 10 performs the first action, the extrusion time of the whitening liquid is about 1 second to 5 seconds (controlled by the main circuit board 15, the extrusion time is calculated according to the relationship between the rotation speed of the output shaft of the motor 10, the pitch of the screw 9 and the extrusion outlet flow of the storage bottle 2 to control the extrusion amount of each operation). After several uses, the threaded push rod 6 reaches the end position (see Figure 7 ), at this time, the threaded push rod 6 hits and triggers the first travel switch, and the motor 10 stops working. At this time, even if the instrument motor 10 is operated again, it will no longer perform the first action. This means that the whitening liquid in the storage bottle 2 is exhausted. At this time, the control motor 10 needs to rotate in the reverse direction to drive the screw 9 to rotate in the reverse direction, and then drive the threaded push rod 6 to move away from the piston 4 through the thread transmission principle until the threaded push rod 6 moves to the starting position (see Figure 8 ), the threaded push rod 6 hits and triggers the second travel switch, and the motor 10 stops working at this time, which means that the empty teeth whitening liquid bottle assembly can be removed and the teeth whitening liquid bottle assembly filled with whitening liquid can be installed. After installation, when the whitening liquid needs to be used, the motor 10 can perform the first action again, and the instrument starts working again, and this cycle repeats.

[0098] For the reset process, the circuit board 15 can be designed with a detection circuit, and when it is detected that the screw 9 is stuck during the reset process, the motor 10 is automatically turned off to prevent the motor 10 from burning out.

[0099] In one embodiment of the present application, the tooth whitening liquid delivery device further includes an inner bracket 13 and a battery 12, the motor 10 is disposed on the inner bracket 13, and the battery 12 is connected to the motor 10 to power the motor 10. The inner bracket 13 can allow the motor 10 to be stably disposed in the housing, and the battery 12 can be used to power the motor 10.

[0100] In one embodiment of the present application, a switch button 17 and a reset button 18 are provided on the housing. When the switch button 17 is pressed, the driving component performs a first action, and when the reset button 18 is pressed, the driving component performs a second action. Each time the switch button 17 is pressed, the extrusion time of the whitening liquid can last for about 1 second to 5 seconds.

[0101] The provision of the switch button 17 and the reset button 18 facilitates the control of the driving component to perform the first action and the second action.

[0102] The above describes in detail a number of embodiments of the present invention, but the present invention is not limited to these specific embodiments. Those skilled in the art can make various variations and modifications to the embodiments based on the concept of the present invention, and these variations and modifications should all fall within the scope of protection claimed by the present invention.

Claims

1. Teeth whitening solution delivery device, It is characterized in that include: A whitening liquid storage bottle assembly, which is used to store whitening liquid; A handle assembly, comprising a housing and a driving assembly disposed in the housing, one end of the whitening liquid storage bottle assembly being disposed on the housing; When the driving component performs a first action, the driving component applies a force to the whitening liquid storage bottle component to quantitatively squeeze out the whitening liquid in the whitening liquid storage bottle component; when the driving component performs a second action, the driving component releases the force applied to the whitening liquid storage bottle component; A protective cover (19) is arranged outside the whitening liquid storage bottle assembly and connected to the shell, and is used to protect the whitening liquid storage bottle assembly.

2. The tooth whitening solution delivery device according to claim 1, It is characterized in that The whitening liquid storage bottle assembly comprises a storage bottle (2), a brush (1) and a piston (4); one end of the brush (1) is arranged inside one end of the storage bottle (2), and the other end of the brush (1) is located outside the storage bottle (2); the piston (4) is sealingly arranged at the other end of the storage bottle (2); The driving assembly comprises a motor (10), a screw (9) and a threaded push rod (6), wherein the screw (9) is connected to an output end of the motor (10), and the threaded push rod (6) is threadedly connected to the screw (9) and moves along the axial direction of the screw (9) when the screw (9) rotates; The first action is that the motor (10) rotates in a first direction, and when the motor (10) rotates in the first direction, it drives the screw rod (9) to rotate in the first direction, thereby driving the threaded push rod (6) to move in a direction close to the piston (4), and pushes the piston (4) into the storage bottle (2), so that the whitening liquid in the storage bottle (2) can be quantitatively squeezed out to the brush (1); The second action is that the motor (10) rotates in a second direction. When the motor (10) rotates in the second direction, it drives the screw rod (9) to rotate in the second direction, thereby driving the threaded push rod (6) to move in a direction away from the piston (4), thereby causing the threaded push rod (6) to withdraw from the storage bottle (2), wherein the second direction is opposite to the first direction.

3. The tooth whitening solution delivery device according to claim 2, It is characterized in that The driving assembly further comprises a positioning block (7), the positioning block (7) being arranged in the housing and limited on the inner wall of the housing; a center hole arranged along the axis of the screw rod (9) is arranged at the center of the screw rod (9), a positioning column (7-1) is arranged on one side of the positioning block (7), and the positioning column (7-1) extends into the center hole of the screw rod (9) to position the screw rod (9).

4. The tooth whitening solution delivery device according to claim 3, It is characterized in that The threaded push rod (6) is in the shape of a hollow cylinder, and at least two avoidance grooves (6-2) are arranged on the side wall of the threaded push rod (6) along its axial direction; the at least two avoidance grooves (6-2) penetrate the side wall of the threaded push rod (6) along the radial direction of the threaded push rod (6); The positioning block (7) can extend from the at least two avoidance grooves (6-2) to the outside of the threaded push rod (6).

5. The tooth whitening solution delivery device according to claim 4, It is characterized in that The driving assembly also includes a push rod cover (6-1) for pushing the piston (4) to move; The threaded push rod (6) is open at one end close to the whitening liquid storage bottle assembly, and the at least two avoidance grooves (6-2) penetrate the open end to form an opening; The push rod cover (6-1) is buckled on one end of the threaded push rod (6) and blocks the exposed portion and the opening.

6. The tooth whitening solution delivery device according to claim 5, It is characterized in that The driving component also includes a reset component; The threaded push rod (6) has a starting position and an ending position. When the storage bottle (2) is filled with whitening liquid and the push rod cover (6-1) abuts against the piston (4), the threaded push rod (6) is located at the starting position; when the whitening liquid in the storage bottle (2) is squeezed out and the push rod cover (6-1) abuts against the piston (4), the threaded push rod (6) is located at the ending position. When the threaded push rod (6) is located at the end position and the driving assembly performs a second action, the reset assembly is used to apply a force to the threaded push rod (6) to make it move in a direction away from the piston (4); When the threaded push rod (6) is located at the starting position and the driving assembly performs the first action, the reset assembly can also be used to apply a force to the threaded push rod (6) to make it move in a direction close to the piston (4).

7. The tooth whitening solution delivery device according to claim 6, It is characterized in that The reset assembly comprises a first reset spring (8) and a second reset spring (11); When the threaded push rod (6) moves to the end position and the start position, the threaded push rod (6) is separated from the screw rod (9); The threaded push rod (6) is provided with an annular limit platform at one end thereof for connection with the screw rod (9); the first return spring (8) is sleeved outside the threaded push rod (6); one end of the first return spring (8) is provided on the positioning block (7); the other end of the first return spring (8) abuts against the surface of one side of the limit platform; when the threaded push rod (6) is located at the end position and the driving assembly performs the second action, the first return spring (8) is used to apply a force to the threaded push rod (6) to make it move in a direction away from the piston (4), so that the threaded push rod (6) is restored to be threadedly connected with the screw rod (9); One end of the second return spring (11) abuts against the table surface on the other side of the limit table, and the other end of the second return spring (11) is fixed in the housing. When the threaded push rod (6) is located at the starting position and the drive assembly performs the first action, the second return spring (11) is used to apply a force to the threaded push rod (6) to make it move toward the direction close to the piston (4), so that the threaded push rod (6) is restored to be threadedly connected with the screw rod (9).

8. The tooth whitening solution delivery device according to claim 6, It is characterized in that The drive assembly also includes a first travel switch and a second travel switch; The first travel switch and the second travel switch are respectively arranged at two ends of the housing; When the threaded push rod (6) moves to the end position, the threaded push rod (6) triggers the first travel switch, and the first travel switch sends a first control signal to stop the driving component from performing the first action; When the threaded push rod (6) moves to the starting position, the threaded push rod (6) triggers the second travel switch, and the second travel switch sends a second control signal to stop the driving component from performing the second action.

9. The tooth whitening solution delivery device according to claim 2, It is characterized in that The tooth whitening liquid delivery device further comprises an inner bracket (13) and a battery (12); the motor (10) is arranged on the inner bracket (13); and the battery (12) is connected to the motor (10) to supply power to the motor (10).

10. The tooth whitening solution delivery device according to claim 1, It is characterized in that The housing is provided with a switch button (17) and a reset button (18); when the switch button (17) is pressed, the drive component performs a first action; and when the reset button (18) is pressed, the drive component performs a second action.

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