Anti-impact fixing mechanism for outer rotating motor of walking and running machine

Abstract

The utility model relates to the technical field of motors of walking and running machines, and particularly discloses an anti-impact fixing mechanism for an external rotation motor of a walking and running machine, which is characterized by comprising a stator, a rotor matched with the stator to rotate and a limiter, the stator is provided with a motor shaft for installation; the limiter is used for limiting the motor shaft on an external fixing frame; the limiting device is provided with a blocking piece used for blocking the axial movement of the motor shaft. The motor vibration noise can be reduced, and the use comfort of a user is improved.

Description

Technical Field

[0001] This utility model relates to the field of treadmill motor technology, and in particular discloses an anti-impact fixing mechanism for the external rotating motor of a treadmill. Background Technology

[0002] Existing external motor fixing mechanisms are mostly simple in structure and cannot effectively solve the problems of excessive vibration and noise during motor rotor rotation, easy spinning and axial movement, and low stability. One type of treadmill motor with shock absorption (CN209108527 U) has a shock-absorbing rubber ring at each end of the motor shaft, which reduces motor noise to some extent, but cannot prevent the motor from swinging during operation. A vibration damping structure for a brushless external motor in treadmills (CN 220156339U) has a pair of fixing blocks outside the rubber rings on both sides. These fixing blocks can reduce motor displacement to some extent, but the structure has many parts, is not stable enough, and is overly cumbersome to install. Utility Model Content

[0003] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide an anti-impact fixing mechanism for the external motor of a treadmill.

[0004] To achieve the above objectives, this utility model provides an anti-impact fixing mechanism for the external rotating motor of a treadmill, characterized in that it includes a stator, a rotor that rotates in cooperation with the stator, and a limiter; the stator has a motor shaft for mounting; the limiter is used to limit the motor shaft on an external fixing frame; the limiter has a baffle for stopping the axial movement of the motor shaft.

[0005] Furthermore, the anti-impact fixing mechanism for the external motor of the treadmill also includes a shock-absorbing rubber sleeve, which is clamped between the limiter and the motor shaft.

[0006] Furthermore, the shock-absorbing rubber sleeve has a blind hole for accommodating one end of the motor shaft. The blind hole is recessed from the end face of the first end of the shock-absorbing rubber sleeve. The second end of the shock-absorbing rubber sleeve has a stop ring for covering the blind hole and blocking the end face of the motor shaft. The stop ring is clamped between the end face of the motor shaft and the stop ring.

[0007] Furthermore, one end of the shock-absorbing rubber sleeve is provided with a protrusion, which protrudes from the outer surface of the shock-absorbing rubber sleeve. The motor shaft is provided with a boss, and the shock-absorbing rubber sleeve is clamped between the boss and the limiter.

[0008] Furthermore, a conductive element for releasing static electricity is provided between the shock-absorbing rubber sleeve and the motor shaft. One end of the conductive element contacts the motor shaft, and the other end of the conductive element protrudes out of the shock-absorbing rubber sleeve and is used to contact the external fixed frame or the ground.

[0009] Furthermore, at least one end of the motor shaft is a non-circular irregular structure, and the limiter has a non-circular irregular concave hole adapted to the non-circular irregular structure. The number of the limiters is at least one.

[0010] Furthermore, the baffle covers the non-circular irregular concave hole.

[0011] Furthermore, one end of the motor shaft is a through hole, which extends along the central axis of the motor shaft. The motor shaft is provided with a lead hole that communicates with the through hole and is used to guide the conductor of the rotor through.

[0012] Furthermore, the baffle is provided with a wire-passing hole that matches the through hole, for guiding the rotor's wires through.

[0013] Furthermore, the limiter is provided with screw holes for installing screws, and the number of screw holes is at least one. The limiter fixes the motor shaft to an external mounting bracket via screws.

[0014] The beneficial effects of this utility model are:

[0015] External motor shock protection and fixing function: The limit switch fixes the motor shaft to the external mounting bracket to prevent the motor shaft from shifting when the rotor rotates. The baffle on the limit switch can also prevent the motor shaft from shifting axially.

[0016] Vibration reduction and noise reduction: The shock-absorbing rubber sleeve located between the limiter and the motor shaft can not only reduce the friction and vibration between the limiter and the motor shaft, but the stop ring and convex plate of the shock-absorbing rubber sleeve also play a buffering role between the rotor and the limiter, which reduces the wear of the motor shaft and the rotor and extends the service life.

[0017] Easy to install: The shape of the limiter's concave hole matches the shape of the motor shaft end, making installation less prone to errors. In addition, the end of the limiter away from the motor shaft is equipped with a baffle, which facilitates the positioning of the limiter when it is installed on the motor shaft.

[0018] Easy to maintain and repair: The rotor's wires pass through the through-hole in the motor shaft from the lead hole, and then through the wire hole in the limit switch baffle. The wiring is clearly set and not easily damaged. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the anti-impact fixing mechanism for the external motor of a treadmill according to the present invention;

[0020] Figure 2 This is a partial structural schematic diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the motor shaft structure of this utility model;

[0022] Figure 4This is a schematic diagram of the limiter structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the shock-absorbing rubber sleeve structure of this utility model.

[0024] The reference numerals in the attached drawings include: 1. Rotor; 2. Limiter; 21. Baffle; 22. Wire hole; 23. Screw hole; 3. Motor shaft; 31. Boss; 32. Through hole; 33. Lead wire hole; 4. Shock-absorbing rubber sleeve; 41. Blind hole; 42. Stop ring; 43. Protrusion. Detailed Implementation

[0025] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0026] Please see Figures 1 to 4 As shown, the present invention discloses an anti-impact fixing mechanism for an external rotating motor of a treadmill, characterized in that: it includes a stator, a rotor 1 that rotates in cooperation with the stator, and a limiter 2; the stator has a motor shaft 3 for installation; the limiter 2 is used to limit the motor shaft 3 to an external fixing frame; the limiter 2 has a baffle 21 for blocking the axial movement of the motor shaft 3.

[0027] In actual use, rotor 1 is installed in the middle of motor shaft 3 to ensure balanced and stable power output. There are two limiters 2, located on both sides of rotor 1, which are used to fix motor shaft 3 to an external fixed frame to prevent the position of rotor 1 from shifting from that of motor shaft 3 when rotor 1 rotates.

[0028] Specifically, the anti-impact fixing mechanism for the external motor of the treadmill also includes a shock-absorbing rubber sleeve 4, which is clamped between the limiter 2 and the motor shaft 3.

[0029] In actual use, a shock-absorbing rubber sleeve 4 is set between the limiter 2 and the motor shaft 3. The shock-absorbing rubber sleeve 4 is made of wear-resistant and high-temperature resistant rubber, which can reduce friction and noise between the limiter 2 and the motor shaft 3, extend the life of the motor shaft 3, and improve the user experience.

[0030] Specifically, the shock-absorbing rubber sleeve 4 has a blind hole 41 for accommodating one end of the motor shaft 3. The blind hole 41 is recessed from the end face of the first end of the shock-absorbing rubber sleeve 4. The second end of the shock-absorbing rubber sleeve 4 has a stop ring 42 for covering the blind hole 41 and blocking the end face of the motor shaft 3. The stop ring 42 is clamped between the end face of the motor shaft 3 and the stop plate 21.

[0031] In actual use, the closed-end characteristic of the blind hole 41 allows the shock-absorbing rubber sleeve 4 to be pressed all the way down without repeated adjustment of the installation position, making installation more convenient and faster. At the same time, the stop ring 42 is clamped between the end face of the motor shaft 3 and the stop plate 21, which can also play a role in buffering, protecting and reducing vibration.

[0032] Specifically, one end of the shock-absorbing rubber sleeve 4 is provided with a protrusion 43, which protrudes from the outer surface of the shock-absorbing rubber sleeve 4. The motor shaft 3 is provided with a boss 31, and the shock-absorbing rubber sleeve 4 is clamped between the boss 31 and the limiter 2.

[0033] In actual use, the rotor 1 may move axially along the motor shaft 3 when it rotates, which may cause it to collide with the limiters 2 at both ends of the motor shaft 3. A protruding tab 43 on the outer surface of one end of the shock-absorbing rubber sleeve 4 can solve this problem well, and play the role of buffering, protecting the rotor 1 and reducing vibration.

[0034] Specifically, a conductive element for releasing static electricity is provided between the shock-absorbing rubber sleeve 4 and the motor shaft 3. One end of the conductive element contacts the motor shaft 3, and the other end of the conductive element protrudes out of the shock-absorbing rubber sleeve 4 and is used to contact the external fixed frame or the ground.

[0035] In actual use, the rotor will inevitably generate static electricity when it is running. The accumulation of static electricity may cause equipment damage or safety hazards. A notch is provided on the convex plate 43 of the shock-absorbing rubber sleeve 4 to place a conductive component. The conductive component is a long strip of metal with good flexibility. One end contacts the motor shaft 3, and the other end extends out from the notch on the convex plate 43 of the shock-absorbing rubber sleeve 4 to contact the external fixed frame or the ground to release static electricity.

[0036] Specifically, at least one end of the motor shaft 3 is a non-circular irregular structure, the limiter 2 has a non-circular irregular concave hole adapted to the non-circular irregular structure, and the number of the limiters 2 is at least one.

[0037] In actual use, two limiters 2 are used, which can remove the motor shaft 3 and rotor 1 from the external mounting bracket for easy maintenance. The two ends of the motor shaft 3 are non-circular irregular structures that fit into the recesses of the two limiters 2. This non-circular irregular structure can make the installation and engagement more precise, and can also effectively prevent the motor shaft 3 from rotating.

[0038] Specifically, the baffle 21 covers the non-circular irregular concave hole.

[0039] In actual use, one end of the limiter 2 is provided with a baffle 21, which covers the non-circular irregular concave hole and the end face of the motor shaft 3, and can prevent the motor shaft 3 from axially displacing.

[0040] Specifically, one end of the motor shaft 3 is a through hole 32, which extends along the central axis of the motor shaft 3. The motor shaft 3 is provided with a lead hole 33 that communicates with the through hole 32 and is used to guide the wires of the rotor 1 through.

[0041] Specifically, the baffle 21 is provided with a wire hole 22 that matches the through hole 32, for guiding the wire of the rotor 1 through.

[0042] In actual use, the wires of rotor 1 enter through lead hole 33, pass through through hole 32 of motor shaft 3 and exit through wire hole 22 on baffle 21. The wiring is clearly set up, which can protect the wiring of rotor 1 well and facilitate later maintenance and repair.

[0043] Specifically, the limiter 2 is provided with screw holes 23 for installing screws, and the number of screw holes 23 is at least one. The limiter 2 fixes the motor shaft 3 to the external mounting bracket via screws.

[0044] In actual use, the top surface of the limiter 2 is provided with two elongated screw holes 23, which are used to fix the motor shaft 3 to the external mounting bracket. The elongated screw holes 23 also provide a certain fixing range for the screws. The position of the motor shaft 3 on the external mounting bracket can be adjusted by adjusting the position of the screws in the elongated screw holes 23.

[0045] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A kind of outside rotation motor anti-impact fixing mechanism of walking and running machine, it is characterized by: The application relates to a walking and running machine outer rotating motor anti-impact fixing mechanism which comprises a stator, a rotor (1) rotating with the stator and a position limiter (2); the stator is provided with a motor shaft (3) for installation; the position limiter (2) is used for limiting the motor shaft (3) on a fixed frame in the outside world; the position limiter (2) is provided with a baffle (21) for stopping the axial movement of the motor shaft (3).

2. The anti-impact fixing mechanism of the outer rotating motor of the walking and running machine according to claim 1, characterized in that: The walking and running machine outer rotating motor anti-impact fixing mechanism further comprises a damping rubber sleeve (4) which is clamped between the position limiter (2) and the motor shaft (3).

3. The anti-shock fixing mechanism of the outer rotating motor of the walking and running machine according to claim 2, characterized in that: The damping rubber sleeve (4) is provided with a blind hole (41) for accommodating one end of the motor shaft (3), the blind hole (41) is concavely arranged from the end face of the first end of the damping rubber sleeve (4), the second end of the damping rubber sleeve (4) is provided with a stop ring (42) for covering the blind hole (41) and shielding the end face of the motor shaft (3), and the stop ring (42) is clamped between the end face of the motor shaft (3) and the baffle (21).

4. The anti-shock fixing mechanism of the outer rotating motor of the walking and running machine according to claim 2, characterized in that: One end of the damping rubber sleeve (4) is provided with a protruding piece (43) which is protrudingly arranged from the outer surface of the damping rubber sleeve (4), the motor shaft (3) is provided with a boss (31), and the damping rubber sleeve (4) is clamped between the boss (31) and the position limiter (2).

5. The anti-shock fixing mechanism of the outer rotating motor of the walking and running machine according to claim 2, characterized in that: A conductive piece is arranged between the damping rubber sleeve (4) and the motor shaft (3) and used for releasing static electricity, one end of the conductive piece is in contact with the motor shaft (3), and the other end of the conductive piece protrudes out of the damping rubber sleeve (4) and is used for contacting the fixed frame in the outside world or the ground.

6. The anti-shock fixing mechanism of the outer rotating motor of the walking and running machine according to claim 1, characterized in that: At least one end of the motor shaft (3) is a non-circular special-shaped structure, the position limiter (2) is provided with a non-circular special-shaped recess hole matched with the non-circular special-shaped structure, and the number of the position limiters (2) is at least one.

7. The anti-shock fixing mechanism of the outer rotating motor of the walking and running machine according to claim 6, characterized in that: The baffle (21) covers the non-circular special-shaped recess hole.

8. The anti-shock fixing mechanism of the outer rotating motor of the walking and running machine according to claim 1, characterized in that: One end of the motor shaft (3) is provided with a through hole (32) which is arranged along the central axis of the motor shaft (3), and the motor shaft (3) is provided with a lead wire hole (33) which is in communication with the through hole (32) and used for leading the lead wire of the rotor (1) to pass out.

9. The anti-shock fixing mechanism of the outer rotating motor of the walking and running machine according to claim 8, characterized in that: The baffle (21) is provided with a wire passing hole (22) matched with the through hole (32) and used for guiding the lead wire of the rotor (1) to pass out.

10. The anti-shock fixing mechanism of the outer rotating motor of the walking and running machine according to claim 1, characterized in that: The position limiter (2) is provided with a screw hole (23) used for mounting a screw, the number of the screw holes (23) is at least one, and the position limiter (2) fixes the motor shaft (3) on the fixed frame in the outside world through the screw.

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