An electronic cigarette supplied with oil by a motor
By controlling the e-liquid supply through a rotor driven by a micro stepper motor that squeezes and peristalts within the e-liquid supply pipe, the problem of inaccurate e-liquid supply and leakage in electronic cigarettes is solved. This achieves precise e-liquid supply and miniaturized design, improving flavor consistency and layout flexibility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG CELLULAR WORKSHOP ELECTRONIC TECH CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-03
AI Technical Summary
Existing e-cigarette e-liquid supply structures have the risk of leakage, inaccurate e-liquid flow, large space requirements, and affect the consistency of flavor and design layout.
A miniature stepper motor drives the rotor to control the oil supply through a squeezing and peristaltic motion. Rollers on the rotor cut off the oil path inside the oil supply pipe, and food-grade silicone tubing is used to achieve a seal. A reducer is used to increase torque to control the flow rate of e-liquid.
It achieves precise control of the oil supply, reduces the risk of oil leakage, shrinks the space occupied, improves the consistency of taste, and enhances the design flexibility of e-cigarettes.
Smart Images

Figure CN224440445U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic cigarette technology, and specifically to an electronic cigarette that uses a motor to supply oil. Background Technology
[0002] For e-cigarettes with a clear e-liquid reservoir, the e-liquid is typically stored in the reservoir and supplied to the e-liquid cartridge as needed. To achieve accurate e-liquid supply control, current structures use e-liquid pumps. Existing structures usually employ a miniature DC diaphragm pump placed within the e-liquid supply pipe; the e-liquid supply is controlled by controlling the pump. However, this pump structure cannot completely isolate the e-liquid cartridge from the external environment. Leakage can occur to some extent under negative pressure, vibration, or varying temperatures. Controlling the e-liquid flow rate depends on voltage, current, time, and internal cartridge pressure; however, e-cigarette voltages are generally between 3.4V and 4.2V. This voltage inconsistency leads to different motor speeds, resulting in inaccurate e-liquid supply and significant variations in the amount of e-liquid stored in the atomizer, thus affecting the flavor. Furthermore, the e-liquid pump is typically 6.7*4cm in size, taking up considerable space and hindering the design layout of e-cigarettes. Utility Model Content
[0003] The technical problem solved by this invention is to provide an electronic cigarette that supplies oil via a motor; it can achieve precise and reliable control of the oil supply and occupies a small volume.
[0004] The technical solution of this utility model to solve the above-mentioned technical problems is:
[0005] The electronic cigarette includes an oil tank, an oil storage cotton, and an oil supply pipe; the oil supply pipe connects the oil tank and the oil storage cotton; it also includes a motor assembly; the motor assembly is located outside the oil supply pipe and can be squeezed to flatten the oil supply pipe and cut off the oil passage of the oil supply pipe.
[0006] The motor assembly includes a stepper motor, a reducer, and a rotor; the output of the stepper motor is connected to the rotor after passing through the reducer.
[0007] It also includes a rotary chamber for the oil supply pipe; a section of the oil supply pipe is bent inside the rotary chamber; the rotor is placed at the center of the rotary chamber; the rotor can cooperate with the inner wall of the rotary chamber to flatten the oil supply pipe and cut off the oil passage inside the oil supply pipe.
[0008] The rotor has radial rollers connected to its front end; the two ends of the rollers can cooperate with the inner wall of the rotating cavity to divide the oil supply pipe into three sections: the oil tank and roller section, the roller section, and the roller and oil storage cotton section; when the rollers rotate under the drive of the stepper motor, the e-liquid in the oil supply pipe roller section can be pressed into the roller and oil storage cotton section; as the rollers continue to rotate, the e-liquid in the oil tank and roller section forms the e-liquid in the next roller section.
[0009] This invention utilizes a squeezing and peristaltic motion during rotor rotation to feed e-liquid from the oil tank side of the supply tube to the oil storage cotton side. Rollers on the rotor squeeze the silicone material of the supply tube, cutting off the oil path and sealing the oil passage between the oil storage cotton and the oil tank. Even under negative pressure, vibration, or varying temperatures, e-liquid will not leak from the oil tank. This invention employs a miniature stepper motor, allowing precise control of the rotor's speed, direction of rotation, and number of revolutions, thereby controlling the oil inlet speed and flow rate, and achieving stable control of the atomizer's e-liquid storage volume. Flavor consistency is minimal. The motor assembly is small in size, occupying little space and facilitating easier design and layout for e-cigarettes. A reducer increases the torque of the stepper motor to drive the rotor's rotation. The food-grade silicone tubing used in this invention can withstand 100,000-200,000 compression cycles, far exceeding the lifespan required for e-cigarettes. Attached Figure Description
[0010] The present invention will be further described below with reference to the accompanying drawings:
[0011] Figure 1 This is a cross-sectional schematic diagram of the electronic cigarette of this utility model;
[0012] Figure 2 This is a schematic diagram of the assembly state of the electronic cigarette motor assembly 4 and the oil supply pipe 3 of this utility model;
[0013] Figure 3 This is an exploded three-dimensional view of the electronic cigarette of this utility model. Detailed Implementation
[0014] The following embodiments are descriptions of specific implementations of the present utility model. These descriptions are intended to facilitate understanding of the technical solutions of this application by those skilled in the art and are not intended to limit the scope of protection of the technical solutions of the present utility model. All equivalent transformations that can be obtained from the description of the embodiments of the present utility model should be within the scope of protection of the present utility model.
[0015] like Figures 1 to 3 As shown, the electronic cigarette of this utility model includes an oil tank 1, an oil storage cotton 2, an oil supply pipe 3, and a motor assembly 4. The oil supply pipe 3 connects the oil tank 1 and the oil storage cotton 2; that is, one end of it is connected to the oil tank 1, and the other end is connected to the oil storage cotton 2.
[0016] like Figure 2 As shown, the motor assembly 4 includes a stepper motor 41, a reducer 42, and a rotor 43; the output of the stepper motor 41 is connected to the rotor 43 after passing through the reducer 42; a radial roller 44 is connected to the front end of the rotor 43. A rotating cavity 45 is provided outside the roller 44. A section of the oil supply pipe 3 is bent inside the rotating cavity 45 and wraps around the outside of the roller 44.
[0017] The roller 44 can be fitted with the inner wall of the rotating cavity 45 at both ends to divide the oil supply pipe 3 into three sections: the section between the oil tank 1 and the roller 44, the section between the roller 44 and the oil storage cotton 2. When the roller 44 rotates under the drive of the stepper motor 41, it... Figure 2 When the state shown continues to rotate clockwise, Figure 2 The left end of the roller 44 disengages from the oil supply pipe 3; the right end of the roller 44 presses the e-liquid in the oil supply pipe 3 into the section between the roller 44 and the oil storage cotton 2; as the roller 44 continues to rotate, the left end of the roller 44 rotates to the right position, achieving compression with the oil supply pipe 3; the oil tank 1 and the e-liquid in the roller 44 section form the e-liquid in the next roller 44 section. Therefore, by controlling the rotation of the roller 44, the e-liquid is supplied to the oil storage cotton 2 in a controllable manner. This invention will have a certain delay in oil supply during initial use; the working time of the peristaltic stepper motor 41 can be delayed by adjusting the control method to ensure that the initial e-liquid supply is the normal supply amount.
[0018] Figure 1 , 3 The diagram shows an example of an electronic cigarette structure for the purpose of illustrating the technical solution of this utility model; however, this utility model is not limited to the structure of the remaining parts of the electronic cigarette shown in the diagram; the remaining parts are unrelated to the implementation of the aforementioned solution and will not be described in detail here.
Claims
1. An electronic cigarette with oil supply by motor, the electronic cigarette comprising an oil tank, an oil storage cotton and an oil supply pipe; the oil supply pipe is connected with the oil tank and the oil storage cotton; characterized in that: It also includes a motor assembly; the motor assembly is located outside the oil supply pipe and can be squeezed to flatten the oil supply pipe and cut off the oil passage of the oil supply pipe.
2. The electronic cigarette supplied with oil by an electric motor according to claim 1, characterized in that: The motor assembly includes a stepper motor, a reducer, and a rotor; the output of the stepper motor is connected to the rotor after passing through the reducer.
3. The electronic cigarette supplied with oil by an electric motor according to claim 2, characterized in that: It also includes a rotary chamber for the oil supply pipe; a section of the oil supply pipe is bent inside the rotary chamber; the rotor is placed at the center of the rotary chamber; the rotor can cooperate with the inner wall of the rotary chamber to flatten the oil supply pipe and cut off the oil passage inside the oil supply pipe.
4. The electronic cigarette supplied with oil by an electric motor according to claim 3, characterized in that: The rotor has radial rollers connected to its front end; the two ends of the rollers can cooperate with the inner wall of the rotating cavity to divide the oil supply pipe into three sections: the oil tank and roller section, the roller section, and the roller and oil storage cotton section; when the rollers rotate under the drive of the stepper motor, the e-liquid in the oil supply pipe roller section can be pressed into the roller and oil storage cotton section; as the rollers continue to rotate, the e-liquid in the oil tank and roller section forms the e-liquid in the next roller section.