Liquid pushing device and hair strengthening comb

Abstract

The utility model belongs to the technical field of hair care combs, and relates to a liquid pushing device and a hair care comb, and the liquid pushing device comprises a shell, a liquid pushing device and a liquid pushing device, the liquid pushing rod is installed in the sliding groove in a sliding mode, and the liquid pushing rod can do reciprocating motion relative to the shell; the motor is arranged in the shell, and the motor drives the liquid pushing rod through a transmission assembly; and the limiting switch assembly is fixed to the shell, the liquid pushing rod is provided with a triggering part used for triggering the limiting switch assembly, and the limiting switch assembly is electrically connected with the motor and used for limiting the maximum stroke of the liquid pushing rod.

Description

Technical Field

[0001] The utility model belongs to the technical field of hair care combs and relates to a liquid pushing device and a hair care comb. Background Art

[0002] For some liquid-guiding combs with hair care functions, in addition to combing hair, care liquid can also be applied to the hair or scalp while combing hair, which provides convenience for hair care, helps blood circulation of the scalp, and can also be used to maintain hair, such as preventing hair loss and promoting hair growth. The liquid-pushing device of the existing liquid-guiding comb cannot automatically return to its original position after pushing the liquid, and the motor needs to be manually reversed. Utility Model Content

[0003] The utility model aims to provide a liquid pushing device and a hair care comb to address the deficiencies of the prior art. The position of the liquid pushing rod is monitored by a limit switch assembly to achieve the purpose of controlling a motor to drive the liquid pushing rod to reset.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A liquid pushing device, comprising:

[0006] A housing, wherein a slide groove is provided on the housing;

[0007] A push rod, which is slidably mounted in the slide groove and can reciprocate relative to the housing;

[0008] A motor, which is arranged in the housing and drives the push rod through a transmission assembly;

[0009] The limit switch assembly is fixed on the housing, the push rod is provided with a triggering portion for triggering the limit switch assembly, and the limit switch assembly is electrically connected to the motor to limit the maximum stroke of the push rod.

[0010] Furthermore, the triggering part of the liquid pushing rod is a lever, and the lever is located at the top end of the liquid pushing rod;

[0011] A through slot is provided on the side of the slide slot for the lever to pass through;

[0012] The limit switch assembly includes a first micro switch and a second micro switch, and the first micro switch and the second micro switch are vertically distributed on the side of the slide slot corresponding to the position of the lever.

[0013] Furthermore, a slot is provided at the top of the shell, and the slot is located on the side of the slide slot. The first micro switch and the second micro switch are fixed in the slot through a PCB board.

[0014] Furthermore, a limiting portion is provided on the liquid pushing rod, the limiting portion is in close contact with the inner wall of the slide groove, and the limiting portion is used to limit the rotation of the liquid pushing rod.

[0015] Further, the transmission assembly includes a worm and a helical gear;

[0016] The helical gear is installed in the housing, the inner wall of the helical gear is provided with a thread, and the inner wall of the helical gear is screwed with the thread of the liquid pushing rod;

[0017] The worm is transmission-connected to the motor, and the worm is meshed with the outer teeth of the helical gear.

[0018] Furthermore, a reduction gear set is provided between the worm and the motor transmission.

[0019] Furthermore, a silicone piece is sleeved on the outer side of the reduction gear set;

[0020] The worm is installed in the housing through a bracket, and a silicone pad is provided between the bracket and the housing.

[0021] Furthermore, the motor is a stepping motor.

[0022] A hair care comb comprises the above-mentioned liquid pushing device.

[0023] Furthermore, it also includes a pulse driving module, and the pulse driving module is electrically connected to the motor.

[0024] The application of the technical solution of the utility model has the following advantages:

[0025] 1. The position of the push rod is monitored by the limit switch assembly. When the push rod completes pushing the liquid, the limit assembly will send a signal to the motor to automatically drive the push rod to reset. There is no need to manually reverse the motor, which improves the convenience of use.

[0026] 2. The liquid pushing rod can make reciprocating motion relative to the shell, and cooperate with the transmission component of the motor to achieve uniform distribution of the liquid, ensure the uniform application of the care liquid on the hair or scalp, and improve the care effect.

[0027] 3. The limit switch assembly is connected to the trigger part of the push rod, which can accurately sense the position of the push rod. By controlling the operation of the motor, the maximum stroke of the push rod is limited, which prevents the push rod from exceeding the range and protects the stability and service life of the equipment.

[0028] 4. The housing, slide, lever, limit switch assembly and other components of the hydraulic push device are designed to be closely connected together, reducing the occupied space and making the structure compact.

[0029] 5. The hair care comb also includes a pulse drive module, which can be electrically connected to the motor. By controlling the frequency and pulse width of the pulse signal, the rotation speed of the motor and the movement of the liquid pushing rod can be accurately controlled to achieve a more sophisticated care liquid pushing effect.

[0030] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures particularly pointed out in the written description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention is described in detail below in conjunction with the accompanying drawings to make the above advantages of the present invention more clear.

[0032] Figure 1 It is an exploded view of a liquid pushing device of the utility model;

[0033] Figure 2 It is a schematic diagram of a liquid pushing device of the utility model;

[0034] Figure 3 This is an internal schematic diagram of a liquid pushing device of the utility model;

[0035] Figure 4 This is a schematic diagram of the interior of a hair care comb of the utility model;

[0036] Figure 5 It is a schematic diagram of a hair care comb of the utility model;

[0037] Figure 6 This is a principle diagram of a pulse drive module of a hair care comb of the utility model;

[0038] Figure 7 The utility model discloses a pulse drive module circuit diagram of a hair care comb.

[0039] Reference numerals:

[0040] 100. Housing, 110. Slide slot, 120. Slot, 200. Push rod, 210. Push rod, 220. Limiting part, 300. Motor, 410. First micro switch, 420. Second micro switch, 510. Worm, 520. Bevel gear, 521. Circular boss, 530. Bearing, 540. Reduction gear set. DETAILED DESCRIPTION

[0041] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0042] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship described in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] Reference Figure 1-3 As shown, a liquid pushing device comprises:

[0046] A housing 100, wherein a slide groove 110 is provided on the housing 100;

[0047] A liquid pushing rod 200, wherein the liquid pushing rod 200 is slidably mounted in the slide groove 110, and the liquid pushing rod 200 can reciprocate relative to the housing 100;

[0048] A motor 300, wherein the motor 300 is disposed in the housing 100, and the motor 300 drives the liquid pushing rod 200 through a transmission assembly;

[0049] The limit switch assembly is fixed on the housing 100 , and the push rod 200 is provided with a triggering portion for triggering the limit switch assembly. The limit switch assembly is electrically connected to the motor 300 to limit the maximum stroke of the push rod 200 .

[0050] The design idea of ​​the liquid pushing device is mainly to install the liquid pushing rod 200 in the slide groove 110 of the housing 100 so that it can reciprocate relative to the housing 100. The liquid pushing rod 200 cooperates with the external liquid storage tank to realize the pushing effect of the liquid. The motor 300 drives the movement of the liquid pushing rod 200 through the transmission assembly to achieve uniform liquid pushing. The limit switch assembly is fixed on the housing 100, and can sense the position of the liquid pushing rod 200 by connecting with the trigger part on the liquid pushing rod 200, and is electrically connected to the motor 300 to limit the maximum stroke of the liquid pushing rod 200.

[0051] By cooperating with the external liquid storage tank through the push rod 200, the liquid can be effectively pushed, ensuring that the liquid can be evenly applied to the hair or scalp, and improving the nursing effect. The push rod 200 can do reciprocating motion relative to the housing 100, and is driven by the transmission assembly of the motor 300, so that the uniform and stable liquid pushing can be achieved, and the problem of uneven or discontinuous liquid pushing can be avoided. The limit switch assembly is fixed on the housing 100, and by sensing the position of the push rod 200, the maximum stroke of the push rod 200 can be accurately limited, avoiding the push rod 200 from exceeding the range, and protecting the stability and service life of the equipment. The structure of the push device is relatively simple, consisting of a few components such as the housing 100, the chute 110, the push rod 200, the motor 300 and the limit switch assembly, and the compact design makes the device easy to manufacture, install and maintain.

[0052] In this embodiment, the triggering part of the liquid pushing rod 200 is a lever 210, and the lever 210 is located at the top of the liquid pushing rod 200;

[0053] The side of the slide slot 110 is provided with a through slot for the lever 210 to pass through;

[0054] The limit switch assembly includes a first micro switch 410 and a second micro switch 420, which are vertically distributed on the side of the chute 110 and correspond to the position of the lever 210. When the motor 300 is started, the transmission assembly transmits the rotational force to the liquid pushing rod 200, so that it reciprocates. The lever 210 at the top of the liquid pushing rod 200 passes through the through groove on the side of the chute 110, and interacts with the first micro switch 410 and the second micro switch 420 at the corresponding position of the side of the chute 110. When the liquid pushing rod 200 is pushed to the bottom to trigger the second micro switch 420, the second micro switch 420 will send a signal to notify the motor 300 to reverse. After the motor 300 reverses, the liquid pushing rod 200 begins to reset backward until the first micro switch 410 is triggered.

[0055] When the first micro switch 410 is triggered when the liquid pushing rod 200 is reset, the motor 300 stops reversing and prepares for the next liquid pushing action. The liquid pushing rod 200 is reset to the initial position and waits for the next round of liquid pushing operation.

[0056] By positioning the lever 210 at the top of the push rod 200, the limit switch assembly can be accurately triggered to sense the position of the push rod 200. A through groove is provided on the side of the chute 110 for the lever 210 to pass through, ensuring that the lever 210 can interact smoothly with the limit switch assembly. The first microswitch 410 and the second microswitch 420 are vertically distributed on the side of the chute 110 and correspond to the position of the lever 210, and can accurately sense the front and rear positions of the push rod 200 to limit the maximum stroke of the push rod 200. When the push rod 200 touches the bottom and triggers the second microswitch 420, the motor 300 will automatically reverse and drive the push rod 200 to reset; when the push rod 200 triggers the first microswitch 410, the motor 300 stops reversing and prepares for the next push operation. The entire process is automated, no manual operation is required, and it is convenient and quick.

[0057] In this embodiment, a slot 120 is provided at the top of the housing 100 , and the slot 120 is located on the side of the slide slot 110 . The first micro switch 410 and the second micro switch 420 are fixed in the slot 120 via a PCB board.

[0058] The first micro switch 410 and the second micro switch 420 are fixed in the slot 120 through the PCB board, so that the installation of the limit switch assembly is more stable and not easy to loosen. By providing the slot 120 at the top of the housing 100 and fixing the limit switch assembly in the slot 120, the overall structure of the liquid pushing device is more compact and occupies less space.

[0059] The first micro switch 410 and the second micro switch 420 are fixed in the slot 120 , so that when maintenance or replacement is needed, it is more convenient, and only the slot 120 needs to be disassembled.

[0060] In this embodiment, the push rod 200 is provided with a limiting portion 220, and the limiting portion 220 is in close contact with the inner wall of the chute 110, and the limiting portion 220 is used to limit the rotation of the push rod 200. Through the close contact between the limiting portion 220 and the inner wall of the chute 110, the rotation range of the push rod 200 can be accurately limited, ensuring that the push rod 200 reciprocates within a predetermined range. The existence of the limiting portion 220 can prevent the push rod 200 from exceeding the predetermined rotation range, avoid unnecessary movement, and improve the stability and working efficiency of the push device.

[0061] In this embodiment, the transmission assembly includes a worm 510 and a bevel gear 520;

[0062] The bevel gear 520 is installed in the housing 100, and the inner wall of the bevel gear 520 is provided with threads, and the inner wall of the bevel gear 520 is threadedly connected with the push rod 200;

[0063] The worm 510 is connected to the motor 300 by transmission, and the worm 510 is meshed with the outer teeth of the bevel gear 520. The worm 510 is connected to the motor 300 by transmission, and when the motor 300 is started, the worm 510 can transmit the rotational force to the bevel gear 520 by transmission force. The bevel gear 520 is installed in the housing 100, and its inner wall is provided with a thread, which is screwed with the thread on the liquid pushing rod 200. When the worm 510 rotates, the outer teeth of the bevel gear 520 are meshed with the thread of the worm 510, thereby rotating the bevel gear 520. The rotation of the bevel gear 520 can drive the liquid pushing rod 200 to reciprocate, thereby realizing the pushing of the liquid. Through the transmission connection of the worm 510 and the bevel gear 520, the rotational motion of the motor 300 is converted into the reciprocating motion of the liquid pushing rod 200, thereby realizing the pushing effect of the liquid.

[0064] The transmission connection between the worm 510 and the bevel gear 520 has good transmission efficiency and stability, and can ensure that the rotational motion of the motor 300 is reliably transmitted to the liquid pushing rod 200, so as to achieve uniform liquid pushing. The transmission connection between the worm 510 and the bevel gear 520 can realize precise motion control. By controlling the rotation speed and rotation direction of the motor 300, the movement speed and direction of the liquid pushing rod 200 can be adjusted to meet the liquid pushing of different needs. The bevel gear 520 is installed in the housing 100, and the transmission components are integrated inside the housing 100, which reduces the volume of the device, makes the structure more compact, and improves the space utilization of the equipment. The material selection and design of the worm 510 and the bevel gear 520 are reasonable, can withstand large loads and friction, and have good durability and service life.

[0065] In this embodiment, the bevel gear 520 is provided with a circular boss 521 along the axial direction, and the circular boss 521 is provided with a bearing 530 on the outer sleeve, and the bevel gear 520 is rotatably installed in the housing 100 through the bearing 530. When the worm 510 transmits the rotational force to the bevel gear 520 through the transmission force, the bevel gear 520 rotates along the axial direction, and the design of the circular boss 521 and the bearing 530 plays a supporting and positioning role. The circular boss 521 is provided with the bearing 530 on the outer sleeve, so that the bevel gear 520 can rotate stably, and the direct contact with the housing 100 is reduced, the friction and wear are reduced, and the efficiency and durability of the transmission are improved. Through the use of the bearing 530, the bevel gear 520 can rotate more smoothly in the housing 100, reduce noise and vibration, and improve the stability and working efficiency of the entire liquid pushing device.

[0066] In this embodiment, a reduction gear set 540 is provided between the worm 510 and the motor 300 transmission. When the motor 300 is started, the rotation speed of the motor 300 is usually high, and the liquid pushing rod 200 needs a lower rotation speed to achieve stable liquid pushing. Therefore, the reduction gear set is provided between the worm 510 and the motor 300 transmission to reduce the rotation speed of the motor 300, and the suitable rotation speed is transmitted to the worm 510 to achieve the normal movement of the liquid pushing rod 200. The reduction gear set is usually composed of a plurality of gears, and the reduction is achieved by the different tooth number ratios of the gears. The motor 300 drives one of the gears, and after the transmission of the reduction gear set, the rotation speed is finally reduced and transmitted to the worm 510, so that the liquid pushing rod 200 can reciprocate at an appropriate rotation speed. The reduction gear set can achieve higher transmission efficiency, reduce energy loss, and improve the overall efficiency of the device through reasonable design. The use of the reduction gear set can stably transmit the rotation speed, reduce vibration and noise, and improve the stability and reliability of the device.

[0067] In this embodiment, a silicone member 550 is sleeved on the outer side of the reduction gear set 540;

[0068] The worm 510 is installed in the housing through a bracket, and a silicone pad 560 is provided between the bracket and the housing. As a material with good shock absorption and sound insulation properties, silicone is widely used in various mechanical equipment to reduce operating noise and improve comfort. In the design of this hydraulic push device, a silicone piece is provided on the outside of the reduction gear set. This design can effectively absorb and reduce the impact and vibration caused by gear meshing when the gear set is running, thereby reducing the generation of noise. The worm is installed in the housing through a bracket, and a silicone pad is provided between the bracket and the housing. This design also plays a role in shock absorption and noise reduction. The silicone pad can absorb the vibration generated when the bracket contacts the housing, reduce the hard collision between the two, and reduce the noise generated by mechanical movement.

[0069] Through these designs, the push-liquid device not only ensures its functionality and efficiency, but also greatly improves the user experience. Reducing noise can not only make the device quieter during operation and reduce the impact on the surrounding environment, but also improve the comfort of the device, making the user feel more pleasant and relaxed during use.

[0070] In this embodiment, the motor 300 is a stepper motor 300. The stepper motor 300 is a special motor 300, and its rotation is performed by gradually driving the rotor of the motor 300. It achieves precise rotation control by controlling the frequency and sequence of current pulses.

[0071] When the stepper motor 300 receives a pulse signal, it rotates according to a predetermined step angle, and each time a pulse signal is received, the motor 300 rotates a step angle. By controlling the frequency and pulse width of the pulse signal, the speed and rotation direction of the motor 300 can be controlled.

[0072] In this embodiment, the stepper motor 300 is connected to the worm 510 in a transmission manner. By controlling the pulse signal of the stepper motor 300 , the rotation of the worm 510 can be accurately controlled, thereby realizing the reciprocating motion of the liquid pushing rod 200 .

[0073] The stepper motor 300 can rotate precisely according to the received pulse signal, and can realize accurate liquid pushing, thereby improving the accuracy and stability of the liquid pushing device. The stepper motor 300 usually has a higher torque output and a lower rotation speed, and is suitable for liquid pushing devices that require a larger thrust and a lower speed. By controlling the frequency and pulse width of the pulse signal, the rotation speed and direction of the stepper motor 300 can be adjusted to realize flexible control of the movement of the liquid pushing rod 200. The control of the stepper motor 300 is relatively simple, and usually only a pulse signal is required to realize rotation control, which reduces the complexity and cost of the control system.

[0074] Reference Figure 4-5 As shown, a hair care comb comprises a comb body 600, a liquid pushing device installed in the comb body and a comb head 700 detachably connected to the comb body. The comb head is provided with a liquid storage tank and liquid discharge comb teeth connected to the liquid storage tank. The liquid storage tank is provided with a liquid pushing piston. When in use, the care liquid is added to the liquid storage tank. The comb head is installed on the comb body.

[0075] When pushing liquid, the motor 300 is started, and the transmission assembly transmits the rotational force to the liquid pushing rod 200, so that it drives the liquid pushing piston in the liquid storage tank to push liquid. After the liquid pushing is completed, the motor 300 reverses and drives the liquid pushing rod 200 to reset. The liquid pushing rod 200 is installed in the housing 100 by sliding through the chute 110, and the limiting portion 220 on the liquid pushing rod 200 is in close contact with the inner wall of the chute 110 to achieve the rotation limit of the liquid pushing rod 200. The liquid pushing device is compact in structure and easy to install, so it can be embedded in the design of the hair care comb. When the user only needs to use the hair care comb to comb the hair, the liquid pushing device can realize the pushing of liquid and the massage care of the scalp.

[0076] Reference Figure 6-7 As shown, in this embodiment, a pulse driving module is also included, and the pulse driving module is electrically connected to the motor 300. The pulse driving module adjusts the rotation speed of the stepping motor 300 and the speed of pushing the liquid by controlling the frequency and duty cycle of the pulse signal. When the stepping motor 300 is used to push the liquid on the hair care comb, the speed of the motor 300 can be adjusted by changing the frequency and duty cycle of the pulse signal, thereby realizing the control of the liquid pushing time.

[0077] For example, in this embodiment, the pulse frequency is set to 3Hz, that is, 3 pulse signals are sent out per second. The duty cycle of the pulse is set to 25%, that is, each pulse lasts 83 milliseconds. By changing the pulse duty cycle, the rotation speed of the motor 300 and the speed of pushing the liquid can be changed. Through the pulse drive module, the rotation speed and the speed of pushing the liquid of the stepper motor 300 can be flexibly adjusted to achieve the arbitrary adjustment of the speed of pushing the liquid. The application of the pulse push liquid circuit enables the user to adjust the speed of pushing the liquid according to their own needs, so as to achieve a personalized experience of pushing the liquid. By controlling the speed of pushing the liquid, the uniform application of the liquid and the massage of the scalp can be better controlled to improve the care effect. The control method of the pulse drive module is simple and intuitive. The user can adjust the push liquid time by adjusting the pulse frequency and the duty cycle, which is easy to use.

[0078] By setting the first micro switch 410 and the second micro switch 420, precise control is provided for the stroke of the liquid pushing rod 200. When the liquid pushing rod 200 is pushed to the bottom to trigger the second micro switch 420, the motor 300 will receive a signal and start to reverse, so that the liquid pushing rod 200 is reset. In this process, the push distance of the liquid pushing rod 200 is controlled between 7.5-10mm, which can ensure the effective push of the liquid and avoid the waste of excessive liquid. The time for the motor to push the liquid is controlled to 2-3 minutes. This time period is carefully calculated based on the viscosity of the liquid and the required push amount, which can ensure that the liquid is fully pushed to the scalp or hair, and can prevent the waste or flow caused by excessive liquid. During this time period, the user can fully take care of the hair and scalp. After the motor is pushed, the time for the screw to reset is about 15 seconds. This fast reset process design ensures that the liquid pushing device can quickly return to the initial position and prepare for the next push. This design not only improves the working efficiency of the liquid pushing device, but also makes the user feel more convenient during use. The design of slow push and quick reset reflects that the liquid push device has found a good balance between functionality and user experience. When slowly pushing the liquid, the user can feel the liquid evenly distributed on the hair and scalp, while the quick reset ensures the continuity and convenience of the liquid push process, making the entire care process efficient and comfortable.

[0079] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A liquid pushing device, characterized in that: include: A housing (100), wherein a slide groove (110) is provided on the housing (100); A liquid pushing rod (200), wherein the liquid pushing rod (200) is slidably mounted in the slide groove (110), and the liquid pushing rod (200) can perform reciprocating motion relative to the housing (100); A motor (300), wherein the motor (300) is disposed in the housing (100), and the motor (300) drives the liquid pushing rod (200) through a transmission assembly; A limit switch assembly is fixed on the housing (100); a triggering portion for triggering the limit switch assembly is provided on the liquid pushing rod (200); and the limit switch assembly is electrically connected to the motor (300) for limiting the maximum stroke of the liquid pushing rod (200).

2. The liquid pushing device according to claim 1, characterized in that: The triggering part of the liquid pushing rod (200) is a lever (210), and the lever (210) is located at the top end of the liquid pushing rod (200); A through slot for the lever (210) to pass through is provided on the side of the slide slot (110); The limit switch assembly comprises a first micro switch (410) and a second micro switch (420), wherein the first micro switch (410) and the second micro switch (420) are vertically distributed on the side of the slide slot (110) corresponding to the position of the lever (210).

3. The liquid pushing device according to claim 2, characterized in that: A slot (120) is provided at the top of the housing (100), the slot (120) is located on the side of the slide groove (110), and the first micro switch (410) and the second micro switch (420) are fixed in the slot (120) via a PCB board.

4. The liquid pushing device according to claim 2, characterized in that: The liquid pushing rod (200) is provided with a limiting portion (220), the limiting portion (220) is in close contact with the inner wall of the slide groove (110), and the limiting portion (220) is used to limit the rotation of the liquid pushing rod (200).

5. The liquid pushing device according to claim 1, characterized in that: The transmission assembly includes a worm (510) and a helical gear (520); The bevel gear (520) is installed in the housing (100), the inner wall of the bevel gear (520) is provided with a thread, and the inner wall of the bevel gear (520) is threadedly connected to the liquid pushing rod (200); The worm (510) is drivingly connected to the motor (300), and the worm (510) is meshed with the external teeth of the helical gear (520).

6. The liquid pushing device according to claim 5, characterized in that: A reduction gear set (540) is provided between the worm (510) and the motor (300).

7. The liquid pushing device according to claim 6, characterized in that: The outer side of the reduction gear set (540) is provided with a silicone piece (550); The worm (510) is installed in the housing via a bracket, and a silicone pad (560) is provided between the bracket and the housing.

8. The liquid pushing device according to claim 1, characterized in that: The motor (300) is a stepping motor (300).

9. A hair care comb, characterized in that: It comprises the liquid pushing device described in any one of claims 1-8.

10. The hair care comb according to claim 9, characterized in that: It also includes a pulse driving module, which is electrically connected to the motor (300).

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