Heating core push-pull device and electronic cigarette
By introducing a heating core push-pull device into electronic cigarettes and utilizing a gear set and push rod design, the problem of difficulty in reverse motor starting caused by position sensor failure has been solved, achieving convenience and reliability in reverse motor starting.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TT MOTOR (SHENZHEN) IND CO LTD
- Filing Date
- 2024-03-22
- Publication Date
- 2026-08-04
AI Technical Summary
When the position sensor fails, the existing electronic cigarette motor has difficulty starting in reverse, resulting in excessive reverse starting torque that makes it difficult to push or pull the heating element.
The heating core push-pull device, including a housing, drive assembly and sensing assembly, uses a gear set and push rod design to enable the motor to output equal torque to achieve reverse start when the position sensor fails, reducing starting difficulties.
This effectively reduces the difficulty of reversing the e-cigarette motor when the position sensor fails, and improves the convenience and reliability of reversing the motor.
Smart Images
Figure CN224584214U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic cigarette technology, and in particular to a heating core push-pull device and an electronic cigarette. Background Technology
[0002] Electronic cigarettes are a type of non-combustible electronic cigarette with similar effects to regular cigarettes. They primarily work by heating a cartridge with a heating element, which then vaporizes the cartridge to produce an aerosol with a specific flavor for the user.
[0003] To improve the user experience, most existing e-cigarettes are equipped with a screw and nut mechanism. When the user stops using the e-cigarette and presses the switch, the motor drives the screw to rotate, causing the nut to move downwards. The heating element, mounted on the nut, moves downwards with the nut and actively separates from the cartridge. When the lower limit switch is reached, the motor drives the tube to move upwards and ejects the cartridge, making it easy for the user to remove and replace it.
[0004] However, when the position sensor in the e-cigarette fails, the nut will continue to move until it locks against the bracket, at which point the motor will stop driving. Because the lead screw and nut themselves have a stall-locking characteristic, this requires a very large starting torque when the motor is started in reverse, making it difficult to start the motor in reverse. Utility Model Content
[0005] The main purpose of this invention is to provide a heating core push-pull device, which aims to reduce the difficulty of reversing the motor of an electronic cigarette when the position sensor fails.
[0006] To achieve the above objectives, the present invention proposes a heating core push-pull device for use in electronic cigarettes, the heating core push-pull device comprising:
[0007] A housing having a pivot; and
[0008] The drive assembly includes a drive motor, a gear set, and a push rod; the drive motor is disposed in the housing; the gear set is sleeved on the rotating shaft and is connected to the output end of the drive motor; the push rod has a rack that meshes with the gear set; the push rod is used to push and pull the heating element of the electronic cigarette.
[0009] Optionally, the gear set includes a first gear and a second gear, both of which are mounted on the rotating shaft; the drive assembly further includes a worm gear, the first gear having multiple helical teeth that mesh with the worm gear, the worm gear being connected to the output end of the drive motor; the second gear meshes with the rack; the drive motor drives the first gear to rotate the second gear, so that the rack drives the push rod to move linearly.
[0010] Optionally, the drive assembly further includes at least two mounting bearings, each of which is disposed in the housing, one of which is sleeved on one end of the worm gear, and the other of which is sleeved on the other end of the worm gear.
[0011] Optionally, the housing forms a limiting block, and the push rod has a limiting hole extending along the direction of movement of the push rod, and the limiting block is movably inserted into the limiting hole.
[0012] Optionally, the push rod has a guide block, and the housing has a guide hole; the guide block is inserted into the guide hole, and the two sides of the guide block extending perpendicular to the direction of movement of the push rod slide against the inner wall of the guide hole.
[0013] Optionally, the heating core push-pull device further includes a sensing component, which includes a position sensor disposed in the housing. The position sensor is used to sense the position of the guide block and is electrically connected to the drive motor.
[0014] Optionally, the sensing component further includes a lever, one end of which is disposed on the position sensor, and the other end of which is movably abutting against the guide block.
[0015] Optionally, the guide block extends along the direction of movement of the push rod for a length of L1, and the guide hole extends along the direction of movement of the push rod for a length of L2, where L2 ≥ 2L1.
[0016] This utility model also proposes an electronic cigarette, the electronic cigarette comprising:
[0017] The cigarette tube, the heating element, and any one of the above-mentioned heating element push-pull devices are provided. The cigarette tube is movably connected to the housing, and the heating element is located on the push rod. The cigarette tube is used to fill the cigarette cartridge.
[0018] Optionally, the electronic cigarette includes a tube push-pull device, which is located in the housing, and the tube is located at the output end of the tube push-pull device.
[0019] In this invention, the heating element push-pull device includes a housing and a drive assembly. The housing has a rotating shaft; the drive assembly includes a drive motor, a gear set, and a push rod; the drive motor is located on the housing; the gear set is sleeved on the rotating shaft and is connected to the output end of the drive motor; the push rod has a rack that meshes with the gear set; the push rod is used to push and pull the heating element of the electronic cigarette. The drive motor drives the gear set to rotate, causing the push rod to move forward or backward, thereby completing the action of pushing and pulling the heating element. In this invention, since the torque required to rotate the gear set to drive the rack forward and backward is basically the same, when the position sensor on the electronic cigarette fails and causes the push rod to move forward too far, the drive motor only needs to output a torque equal to the forward torque to start in reverse, thereby reversing the gear set and causing the push rod to move backward. This reduces the difficulty of reversing the motor of the electronic cigarette when the position sensor fails. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0021] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the heating core push-pull device provided by this utility model;
[0022] Figure 2 This is an exploded view of the heating core push-pull device;
[0023] Figure 3 This is a three-dimensional structural diagram of the driving component in the heating core push-pull device of this utility model;
[0024] Figure 4 This is a partial structural diagram of the housing in the heating core push-pull device of this utility model;
[0025] Figure 5 This is a three-dimensional structural diagram of the push rod in the heating core push-pull device of this utility model;
[0026] Figure 6 This is a structural schematic diagram of one state of the lever in the heating core push-pull device of this utility model;
[0027] Figure 7 This is a schematic diagram showing another state of the lever in the heating core push-pull device of this utility model;
[0028] Figure 8 This is a structural schematic diagram of another state of the lever in the heating core push-pull device of this utility model;
[0029] Figure 9 This is a structural schematic diagram of another state of the lever in the heating core push-pull device of this utility model.
[0030] Explanation of icon numbers:
[0031]
[0032]
[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0035] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0036] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.
[0037] Please refer to Figure 1 , Figure 2 as well as Figure 3 To address the difficulty of reverse-starting the motor of an electronic cigarette when the position sensor fails, this invention proposes a heating core push-pull device 1000, comprising:
[0038] The device comprises a housing 1 and a drive assembly. The housing 1 has a rotating shaft 11. The drive assembly includes a drive motor 21, a gear set 22, and a push rod 23. The drive motor 21 is mounted on the housing 1. The gear set 22 is sleeved on the rotating shaft 11 and is connected to the output end of the drive motor 21. The push rod 23 has a rack 231 that meshes with the gear set 22. The push rod 23 is used to push and pull the heating element of the electronic cigarette. The drive motor 21 drives the gear set 22 to rotate, causing the push rod 23 to move forward or backward, thereby completing the action of the push rod 23 pushing and pulling the heating element. In this invention, since the torque required to rotate the gear set 22 to drive the rack 231 forward and backward is basically the same, when the position sensor 31 on the electronic cigarette fails and causes the push rod 23 to move forward too far, the drive motor 21 only needs to output a torque equal to the forward torque to start in reverse, thereby reversing the gear set 22 and causing the push rod 23 to move backward. This reduces the difficulty of reversing the motor of the electronic cigarette when the position sensor 31 fails.
[0039] It is understood that the gear set 22 can be directly mounted on the output shaft of the drive motor 21, or it can be connected to the output end of the drive motor 21 via the worm gear 24. The gear set 22 includes a first gear 221 and a second gear 222, both of which are sleeved on the rotating shaft 11; the first gear 221 has multiple helical teeth that mesh with the worm gear 24. In one embodiment, the drive assembly further includes the worm gear 24, the first gear 221 has 50 helical teeth that mesh with the worm gear 24, and the worm gear 24 is connected to the output end of the drive motor 21; the second gear 222 meshes with the rack 231; the drive motor 21 drives the first gear 221 to rotate the second gear 222, so that the rack 231 drives the push rod 23 to move linearly. The first gear 221 meshes with the helical teeth of the worm 24. In the worm gear 24 transmission, the worm 24 acts as the driving element. The lead angle of the worm 24 is smaller than the friction angle between the worm 24 and the first gear 221. The static friction can prevent the first gear 221 from reversing. Therefore, when the drive motor 21 stops driving, the first gear 221 can self-lock with the worm 24 to prevent the first gear 221 from reversing and causing the push rod 23 to retract. At the same time, the number of teeth of the second gear 222 is less than the number of teeth of the first gear 221. This arrangement can slow down the speed at which the drive motor 21 pushes and pulls the push rod 23.
[0040] Specifically, the second gear 222 may have multiple helical teeth that mesh with the rack 231, or it may have multiple spur teeth that mesh with the rack 231. In one embodiment, the second gear 222 has 12 spur teeth that mesh with the rack 231. The spur tooth structure is simpler, allowing the meshing structure between the second gear 222 and the rack 231 to maintain stable operation during long-term use.
[0041] The drive assembly also includes at least two mounting bearings 25. In one embodiment, the drive assembly further includes two mounting bearings 25, each mounted on the housing 1 and respectively sleeved on both ends of the worm 24. The two mounting bearings 25 are used to support the worm 24, increase the stability of the worm 24 during rotation, and prevent the worm 24 from deflecting during rotation, thus affecting the transmission effect.
[0042] Please refer to Figure 4 and Figure 5 In one embodiment, the housing 1 has a limiting block 12, and the push rod 23 has a limiting hole 23a extending along the movement direction of the push rod 23. The limiting block 12 is movably inserted into the limiting hole 23a. The limiting block 12 is movably limited within the limiting hole 23a, which can prevent the push rod 23 from moving too far in one direction and slipping off the housing 1, thus requiring reinstallation and making it convenient for the user.
[0043] In one embodiment, the push rod 23 is provided with a guide block 232 and the housing 1 is provided with a guide hole 1a. The guide block 232 is inserted into the guide hole 1a and slides against the inner wall of the guide hole 1a on both sides of the guide block 232 extending perpendicular to the direction of movement of the push rod 23, so that the push rod 23 moves in a directional manner, thereby preventing the direction of movement of the push rod 23 from deflecting.
[0044] The heating core push-pull device 1000 also includes a sensing component, which includes a position sensor 31. The position sensor 31 is located in the housing 1 and is used to sense the position of the guide block 232 and is electrically connected to the drive motor 21 via a microcontroller. Automatic control of the drive motor 21 can be achieved by setting a position sensor 31 at each end of the guide hole 1a to sense the position of the guide block 232, or by using a position sensor 31 in conjunction with a lever 32 to sense the position of the guide block 232.
[0045] In one embodiment, automatic control of the drive motor 21 is achieved by setting a position sensor 31 at each end of the guide hole 1a. When the push rod 23 is pushed out or pulled back but has not reached the limit position, the position sensor 31 does not sense the guide block 232 and uploads the signal to the microcontroller. The microcontroller controls the drive motor 21 to continue driving. When the push rod 23 is pushed out or pulled back to the limit position, the position sensor 31 detects the guide block 232 and uploads the signal to the microcontroller. The microcontroller controls the drive motor 21 to stop driving. This achieves automatic control of the drive motor 21.
[0046] In another embodiment, the sensing component further includes a lever 32, one end of which is disposed on the position sensor 31, and the other end of which movably abuts against the guide block 232. The position of the guide block 232 can be monitored by the cooperation of the lever 32 and the position sensor 31, thus eliminating the need to install position sensors 31 at both ends of the guide hole 1a for automatic control of the drive motor 21. This results in a smaller overall size of the heating core push-pull device 1000, facilitating installation. Please refer to... Figure 7 and Figure 8 During the process of extending the heating core, the drive motor 21 rotates forward, driving the push rod 23 forward, and the push rod 23 drives the lever 32 from... Figure 7 Rotate to the leftward deflection state Figure 8 In the rightward deflection state, the position sensor 31 detects that the guide block 232 has moved to the right side of the guide hole 1a, and sends a signal to the microcontroller to control the drive motor 21 to stop; during the retraction of the heating core, the drive motor 21 rotates in the opposite direction, causing the push rod 23 to retract, and the push rod 23 causes the lever 32 to move from... Figure 8 Rotate to the right in the middle state Figure 7 When the guide block 232 moves to the left side of the guide hole 1a, the position sensor 31 detects that the guide block 232 has moved to the left side of the guide hole 1a and sends a signal to the microcontroller to control the drive motor 21 to stop. This achieves automatic control of the drive motor 21 by a single position sensor 31 in conjunction with the lever 32.
[0047] Furthermore, the guide block 232 extends for a length L1 along the direction of movement of the push rod 23, and the guide hole 1a extends for a length L2 along the direction of movement of the push rod 23, where L2 ≥ 2L1. In one embodiment, L2 = 2.5L1, so that when the push rod 23 is pushed out or pulled back to its limit position, the lever 32 can slide off the guide block 232, thus enabling the drive motor 21 to complete the push-pull action of the push rod 23 with only one command.
[0048] Please combine Figure 6 , Figure 7 , Figure 8 as well as Figure 9 For reference, taking the push rod 23's extension process as an example, when push rod 23 is at its left extreme position, push rod 23 has not been extended, guide block 232 is located at the leftmost side of guide hole 1a, and lever 32 does not contact guide block 232 and is not subjected to force to deflect (e.g. Figure 6 (As shown); at this time, the position sensor 31 sends a signal to the microcontroller that the lever 32 has not deflected, and the microcontroller controls the drive motor 21 to start (if it rotates forward, it starts normally; if it rotates in reverse, it encounters resistance when the push rod 23 moves and then changes to rotating forward normally). The drive motor 21 drives the push rod 23 to push out; during the pushing process, the lever 32 contacts the guide block 232 and deflects (as shown). Figure 7 and Figure 8 As shown), at this time, the position sensor 31 sends a signal indicating that the lever 32 has deflected to the microcontroller, and the microcontroller controls the drive motor 21 to continue driving; when the guide block 232 reaches the rightmost side of the guide hole 1a, that is, when the push rod 23 reaches the limit position of being pushed out, the lever 32 disengages from the guide block 232 and returns to the center (as shown). Figure 9 As shown), at this time, the position sensor 31 sends the signal for the lever 32 to return to the center position to the microcontroller, and the microcontroller controls the drive motor 21 to stop driving. Similarly, the retraction process of the push lever 23 is similar to the extension process of the push lever 23. When the push lever 23 is at the right extreme position, the push lever 23 is not pulled back, the guide block 232 is located at the rightmost side of the guide hole 1a, and the lever 32 does not contact the guide block 232 and is not deflected by force (as shown). Figure 9 (As shown); at this time, the position sensor 31 sends a signal to the microcontroller that the lever 32 has not deflected, and the microcontroller controls the drive motor 21 to start (if it rotates in reverse, it starts normally; if it rotates in the forward direction, it encounters resistance when the push rod 23 moves and then changes to reverse rotation for normal start), and the drive motor 21 drives the push rod 23 to pull back; during the pull-back process, the lever 32 contacts the guide block 232 and deflects (as shown); Figure 8 and Figure 7 As shown), at this time, the position sensor 31 sends a signal indicating that the lever 32 has deflected to the microcontroller, and the microcontroller controls the drive motor 21 to continue driving; when the guide block 232 reaches the leftmost side of the guide hole 1a, that is, when the push rod 23 reaches the limit position of being pulled back, the lever 32 disengages from the guide block 232 and returns to the center (as shown). Figure 6 As shown in the diagram, at this time, the position sensor 31 sends a signal to the microcontroller to return the lever 32 to the center position, and the microcontroller controls the drive motor 21 to stop driving. Thus, simply giving a command to start the drive motor 21 is enough to control the drive motor 21 to complete the push-pull action of driving the push rod 23.
[0049] This utility model also proposes an electronic cigarette, which includes a heating core push-pull device 1000. The specific structure of the heating core push-pull device 1000 is as described in the above embodiments. Since this electronic cigarette adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.
[0050] In one embodiment, the electronic cigarette includes a tube push-pull device, which is disposed in the housing 1, and the tube is disposed at the output end of the tube push-pull device. The tube push-pull device can push the tube out or pull it back into the electronic cigarette, making it convenient for the user to replace the cartridge.
[0051] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A heating core push-pull device (1000), used in electronic cigarettes, characterized in that, The heating core push-pull device (1000) includes: A housing (1), the housing (1) having a pivot (11); and The drive assembly includes a drive motor (21), a gear set (22), and a push rod (23); the drive motor (21) is disposed on the housing (1); the gear set (22) is sleeved on the rotating shaft (11) and is connected to the output end of the drive motor (21); the push rod (23) has a rack (231) that meshes with the gear set (22); the push rod (23) is used to push and pull the heating element of the electronic cigarette.
2. The heating core push-pull device (1000) as described in claim 1, characterized in that, The gear set (22) includes a first gear (221) and a second gear (222), both of which are mounted on the rotating shaft (11). The drive assembly also includes a worm gear (24), where the first gear (221) has multiple helical teeth that mesh with the worm gear (24), and the worm gear (24) is connected to the output end of the drive motor (21). The second gear (222) meshes with the rack (231). The drive motor (21) drives the first gear (221) to rotate the second gear (222), thereby causing the rack (231) to drive the push rod (23) to move linearly.
3. The heating core push-pull device (1000) as described in claim 2, characterized in that, The drive assembly further includes at least two assembly bearings (25), each assembly bearing (25) being disposed in the housing (1), one of the assembly bearings (25) being sleeved on one end of the worm (24), and the other assembly bearing (25) being sleeved on the other end of the worm (24).
4. The heating core push-pull device (1000) of claim 1, wherein, The housing (1) forms a limiting block (12), and the push rod (23) has a limiting hole (23a) extending along the movement direction of the push rod (23). The limiting block (12) is movably inserted into the limiting hole (23a).
5. The heating core push-pull device (1000) as described in any one of claims 1 to 4, characterized in that, The push rod (23) has a guide block (232), and the housing (1) has a guide hole (1a). The guide block (232) is inserted into the guide hole (1a), and the two sides of the guide block (232) extending perpendicular to the direction of movement of the push rod (23) slide against the inner wall of the guide hole (1a).
6. The heating core push-pull device (1000) as described in claim 5, characterized in that, The heating core push-pull device (1000) also includes a sensing component, which includes a position sensor (31). The position sensor (31) is located in the housing (1) and is used to sense the position of the guide block (232) and is electrically connected to the drive motor (21).
7. The heating core push-pull device (1000) as described in claim 6, characterized in that, The sensing component also includes a lever (32), one end of which is disposed on the position sensor (31), and the other end of which is movably abutted against the guide block (232).
8. The heating core push-pull device (1000) as described in claim 7, characterized in that, The guide block (232) extends along the direction of movement of the push rod (23) for a length of L1, and the guide hole (1a) extends along the direction of movement of the push rod (23) for a length of L2, where L2 ≥ 2L1.
9. An electronic cigarette, characterized in that, The electronic cigarette includes a cigarette tube, a heating element, and a heating element push-pull device (1000) as described in any one of claims 1 to 8. The cigarette tube is movably connected to the housing (1), and the heating element is disposed on the push rod (23). The cigarette tube is used to load cigarette cartridges.
10. The electronic cigarette as described in claim 9, characterized in that, The electronic cigarette includes a cigarette tube push-pull device, which is located in the housing (1), and the cigarette tube is located at the output end of the cigarette tube push-pull device.