Treadmill lift motor with power-off braking

Abstract

The utility model discloses a treadmill hoisting motor with power-off brake structure relates to hoisting motor technical field, including deceleration drive box, connecting block no.

Description

Technical Field

[0001] This utility model relates to the field of lifting motor technology, and in particular to a treadmill lifting motor with a power-off braking structure. Background Technology

[0002] With the increasing demand for intelligent home fitness equipment, treadmills have evolved from single-plane exercise devices into composite machines with incline adjustment functions. Traditional lifting mechanisms use electric motors to drive gears or lead screws to adjust the incline angle of the running platform. However, this design has significant safety hazards. When the equipment loses power or the control system malfunctions, the running platform may fall unexpectedly due to gravity, causing the user to lose balance and fall. Data shows that about 15% of sports injuries caused by the failure of the treadmill incline adjustment mechanism worldwide each year are directly related to the loss of control of the running platform after a sudden power outage.

[0003] A lifting motor structure for fitness equipment, disclosed in publication number CN207910622U, includes a permanent magnet DC motor, a gearbox assembly, and a lead screw assembly. The lower end of the permanent magnet DC motor is connected to the gearbox assembly, and the lead screw assembly passes through the gearbox assembly. The permanent magnet DC motor drives the gearbox assembly, which in turn drives the lead screw assembly to rise or fall. The advantages of this invention are that by using a permanent magnet DC motor to drive the gearbox assembly, thereby driving the lead screw assembly to rise or fall, the problem of excessive noise in traditional lifting motors is eliminated. Simultaneously, the motor efficiency of the lifting motor is improved, achieving 40-50% efficiency for the lifting motor structure used in fitness equipment. Furthermore, the overall structure of the lifting motor structure for fitness equipment is simplified, improving product stability and consistency.

[0004] The existing treadmill incline motors, when in use, cannot be locked in time after an unexpected power outage. This causes the motor to lose its current position after a power failure, resulting in the treadmill incline losing support. The motor cannot maintain its current angle, and the running belt will quickly slide down due to gravity, potentially causing the user to fall or the equipment to tip over. Especially at high speeds, the inertial impact will significantly increase the risk of injury, thereby reducing the safety of using the treadmill. Therefore, corresponding improvements are needed. Utility Model Content

[0005] The purpose of this utility model is to provide a treadmill lifting motor with a power-off braking structure, so as to solve the problem mentioned in the background art that the existing treadmill lifting motors lack self-locking and reduce the safety of use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a treadmill lifting motor with a power-off braking structure, comprising a reduction drive box, a connecting block one, a threaded sleeve, and a lead screw sleeve. The two ends of one side of the reduction drive box are fixed with the connecting block one. The top side of the reduction drive box is rotatably connected with the threaded sleeve, and the top of the threaded sleeve is connected with the lead screw sleeve. The one side of the lead screw sleeve is connected with the connecting block two.

[0007] The gearbox is connected to the outside of the lifting motor body, and one end of the lifting motor body extends into the gearbox and is connected to the drive assembly. A power-off braking mechanism is provided inside the gearbox on one side of the drive assembly.

[0008] Preferably, the drive assembly includes a support shaft connected to one end of the lifting motor body, and a transmission gear is fixedly sleeved on one end of the support shaft. A driven gear meshes with one side of the transmission gear, and a linkage shaft runs through the inside of the driven gear. A worm gear is connected to one end of the linkage shaft.

[0009] Preferably, a worm gear is engaged with one side of the worm, and a power shaft is fixed to the top of the worm gear. One end of the power shaft is fixedly connected to the bottom end of the threaded sleeve. A power screw is threaded inside the threaded sleeve, and one end of the power screw passes through the power shaft and the worm gear and extends to the outside of the reduction drive box.

[0010] Preferably, the power-off braking mechanism includes a brake box, which is located inside the reduction drive box. An electromagnet is connected to one side of the brake box, and spring columns are connected to both sides of the brake box. An adsorption iron block is sleeved on the outside of the spring column. A conductive block is connected to one side of the adsorption iron block, and a telescopic column is connected to one end of the conductive block.

[0011] Preferably, a support block is fixed at one end of the telescopic column, and a braking locking block is uniformly connected to one side of the support block, wherein the cross-section of the braking locking block is trapezoidal.

[0012] Preferably, the electromagnet has an iron core inside, and conductive copper wire is evenly wound around the outside of the iron core. One end of the conductive copper wire extends to the outside of the gearbox and is connected to the power supply.

[0013] Preferably, when the conductive copper wire is energized, it attracts the iron block and the electromagnet to each other; when the conductive copper wire is de-energized, it separates the iron block from the electromagnet. The conductive copper wire is connected to the same power source as the lifting motor body.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the treadmill lifting motor with power failure braking structure has a dual braking and locking effect, so as to improve the safety of using the treadmill when the power is off.

[0015] The main body of the lifting motor drives the support shaft to rotate slowly and synchronously, and the transmission gear rotates synchronously. The transmission gear and the driven gear mesh with each other, which makes the driven gear and the worm rotate synchronously. The worm and the worm wheel mesh with each other, which makes the worm wheel and the power shaft rotate. This drives the threaded sleeve to rotate. The threaded sleeve and the power screw are connected by threads, so that the power screw can move up and down to adjust the height of the fitness equipment. The worm and worm wheel have a self-locking mechanism, which improves the safety of use and prevents the user from losing balance and falling due to accidental slippage of the incline during use of the treadmill.

[0016] The main body of the lifting motor and the conductive copper wire are connected to the same power source. When the main body of the lifting motor experiences an unexpected power outage, the conductive copper wire is simultaneously de-energized. At the moment of power failure, the magnetic field disappears, and the spring on the spring column pushes the conductive block and the telescopic column to move horizontally, which in turn pushes the support block and the brake locking block to move synchronously until the brake locking block is engaged in the transmission gear. This locks the transmission gear, preventing it from rotating due to inertia during the power outage. This dual braking ensures the safety of the treadmill and improves the comfort of its use. Attached Figure Description

[0017] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0019] Figure 2 This is a top view of the structure of this utility model;

[0020] Figure 3 For the present utility model Figure 1 Schematic diagram of the structure at point A in the middle;

[0021] Figure 4 This is a top view cross-sectional structural diagram of the present invention;

[0022] Figure 5 This is a three-dimensional structural diagram of the locking block of this utility model;

[0023] Figure 6 This is a schematic diagram of the combined structure of the iron core and conductive copper wire of this utility model.

[0024] The reference numerals in the diagram are as follows: 1. Gearbox; 2. Connecting block one; 3. Threaded sleeve; 4. Lead screw sleeve; 5. Connecting block two; 6. Power lead screw; 7. Power shaft; 8. Worm gear; 9. Worm; 10. Driven gear; 11. Transmission gear; 12. Support shaft; 13. Power-off braking mechanism; 1301. Brake box; 1302. Electromagnet; 1303. Conductive block; 1304. Adsorption iron block; 1305. Spring column; 1306. Telescopic column; 1307. Support block; 1308. Brake locking block; 14. Lifting motor body; 15. Iron core; 16. Conductive copper wire. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Please see Figures 1-6 The present invention provides the following technical solution: Example

[0027] To address the issues of inconvenience in locking the lifting motor in existing treadmills, resulting in poor safety during use, the following technical solution has been proposed. Please refer to the following for details. Figure 1 , Figure 2 , Figure 4 A treadmill lifting motor with a power-off braking structure includes a reduction drive box 1, a connecting block 2, a threaded sleeve 3, and a lead screw sleeve 4. Connecting blocks 2 are fixed to both ends of one side of the reduction drive box 1. The threaded sleeve 3 is rotatably connected to one side of the top of the reduction drive box 1, and the lead screw sleeve 4 is connected to the top of the threaded sleeve 3. A connecting block 2 5 is connected to one side of the lead screw sleeve 4. A lifting motor body 14 is connected to the outside of the reduction drive box 1, and one end of the lifting motor body 14 extends into the interior of the reduction drive box 1 and is connected to a drive assembly. The drive assembly includes components connected to... The main body 14 of the lifting motor has a support shaft 12 at one end, and a transmission gear 11 is fixedly sleeved on one end of the support shaft 12. A driven gear 10 meshes with one side of the transmission gear 11, and a linkage shaft passes through the inside of the driven gear 10. A worm 9 is connected to one end of the linkage shaft, and a worm wheel 8 meshes with one side of the worm 9. A power shaft 7 is fixed to the top of the worm wheel 8. One end of the power shaft 7 is fixedly connected to the bottom end of the threaded sleeve 3. A power screw 6 is threaded inside the threaded sleeve 3, and one end of the power screw 6 passes through the power shaft 7 and the worm wheel 8 and extends to the outside of the reduction drive box 1.

[0028] In this embodiment, when the lifting motor body 14 is powered on, it drives the support shaft 12 and the transmission gear 11 to rotate. The transmission gear 11 meshes with the driven gear 10, which in turn causes the driven gear 10 and the worm 9 to rotate. The worm 9 meshes with the worm wheel 8, which in turn drives the power shaft 7 and the threaded sleeve 3 to rotate. The threaded sleeve 3 is threadedly connected to the power screw 6, which in turn causes the power screw 6 to move up and down, thus adjusting the use of the treadmill. During this process, the transmission of the worm 9 and the worm wheel 8 can achieve self-locking, thereby improving the safety of the treadmill. Example

[0029] This embodiment differs from Embodiment 1 in that it utilizes the power-off braking mechanism 13 to further lock the lifting motor body 14 in the event of a power outage, thereby improving the safety of the treadmill. Therefore, the following technical solution is disclosed; please refer to the details. Figure 1 , Figure 3 , Figure 5 , Figure 6 A power-off braking mechanism 13 is installed inside the reduction drive box 1 on one side of the drive assembly. The power-off braking mechanism 13 includes a brake box 1301, which is located inside the reduction drive box 1. An electromagnet 1302 is connected to one side of the brake box 1301. Spring columns 1305 are connected to both sides of the brake box 1301. An adsorption iron block 1304 is sleeved on the outside of the spring column 1305. A conductive block 1303 is connected to one side of the adsorption iron block 1304, and a telescopic column 1306 is connected to one end of the conductive block 1303. A support is fixed to one end of the telescopic column 1306. Block 1307, and a brake locking block 1308 is evenly connected to one side of the support block 1307. The brake locking block 1308 has a trapezoidal cross section. An iron core 15 is connected inside the electromagnet 1302, and a conductive copper wire 16 is evenly wound around the outside of the iron core 15. One end of the conductive copper wire 16 extends to the outside of the reduction drive box 1 and is connected to the power supply. When the conductive copper wire 16 is energized, it attracts the iron block 1304 and the electromagnet 1302 to attract each other. When the conductive copper wire 16 is de-energized, it attracts the iron block 1304 and the electromagnet 1302 to separate from each other. The conductive copper wire 16 is connected to the same power supply as the lifting motor body 14.

[0030] In this embodiment, when the power is turned on, the lifting motor body 14 and the conductive copper wire 16 are powered to enable the lifting motor body 14 to work normally. When the conductive copper wire 16 is energized, the iron core 15 is magnetized, and the magnetic lines of force are conducted to the electromagnet 1302 through the air gap. This causes the electromagnet 1302 to attract the adsorbed iron block 1304 and move it along the spring column 1305. The spring on the spring column 1305 is compressed, which pulls the telescopic column 1306 and the brake locking block 1308 to move horizontally. The motor body 14 stops working when there is an unexpected power outage, and the magnetic field around the conductive copper wire 16 disappears synchronously. This causes the adsorbed iron block 1304 to separate from the electromagnet 1302. The elastic reaction force of the spring on the spring column 1305 pushes the brake locking block 1308 into the tooth groove on the transmission gear 11, thereby fixing and limiting the transmission gear 11 and preventing the support shaft 12 from rotating due to inertia when the power is off, thus improving the safety of the treadmill.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A treadmill lifting motor with a power-off braking structure, comprising a reduction drive box (1), a connecting block one (2), a threaded sleeve (3), and a lead screw sleeve (4), wherein the two ends of one side of the reduction drive box (1) are fixed with the connecting block one (2), the top side of the reduction drive box (1) is rotatably connected with the threaded sleeve (3), and the top of the threaded sleeve (3) is connected with the lead screw sleeve (4), and the one side of the lead screw sleeve (4) is connected with the connecting block two (5); Its features are: The gear drive box (1) is connected to the outside of the lifting motor body (14), and one end of the lifting motor body (14) extends into the gear drive box (1) and is connected to the drive assembly. The gear drive box (1) on one side of the drive assembly is provided with a power-off braking mechanism (13).

2. The treadmill lifting motor with a power-off braking structure according to claim 1, characterized in that: The drive assembly includes a support shaft (12) connected to one end of the lifting motor body (14), and a transmission gear (11) is fixedly sleeved on one end of the support shaft (12). A driven gear (10) meshes on one side of the transmission gear (11), and a linkage shaft runs through the inside of the driven gear (10). A worm gear (9) is connected to one end of the linkage shaft.

3. A treadmill lifting motor with a power-off braking structure according to claim 2, characterized in that: The worm (9) is meshed with a worm wheel (8) on one side, and a power shaft (7) is fixed at the top of the worm wheel (8). One end of the power shaft (7) is fixedly connected to the bottom end of the threaded sleeve (3). The threaded sleeve (3) is threadedly connected to a power screw (6), and one end of the power screw (6) passes through the power shaft (7) and the worm wheel (8) and extends to the outside of the reduction drive box (1).

4. A treadmill lifting motor with a power-off braking structure according to claim 1, characterized in that: The power-off braking mechanism (13) includes a brake box (1301), which is located inside the reduction drive box (1). An electromagnet (1302) is connected to one side of the brake box (1301), and spring columns (1305) are connected to both sides of the brake box (1301). An adsorption iron block (1304) is sleeved on the outside of the spring column (1305). A conductive block (1303) is connected to one side of the adsorption iron block (1304), and a telescopic column (1306) is connected to one end of the conductive block (1303).

5. A treadmill lifting motor with a power-off braking structure according to claim 4, characterized in that: One end of the telescopic column (1306) is fixed with a support block (1307), and a brake locking block (1308) is evenly connected to one side of the support block (1307). The brake locking block (1308) has a trapezoidal cross section.

6. A treadmill lifting motor with a power-off braking structure according to claim 4, characterized in that: The electromagnet (1302) has an iron core (15) inside, and a conductive copper wire (16) is evenly wound around the outside of the iron core (15). One end of the conductive copper wire (16) extends to the outside of the reduction drive box (1) and is connected to the power supply.

7. A treadmill lifting motor with a power-off braking structure according to claim 6, characterized in that: When the conductive copper wire (16) is energized, it attracts the iron block (1304) and the electromagnet (1302) to each other. When the conductive copper wire (16) is de-energized, it attracts the iron block (1304) and the electromagnet (1302) to separate from each other. The conductive copper wire (16) and the lifting motor body (14) are connected to the same power source.

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