Motor shaft
By using the guide ramp and stabilizing spring design of the coupling, the wear problem of the motor when the linkage structure is jammed is solved, thus protecting the motor's lifespan and ensuring stable connection of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-03-27
AI Technical Summary
In existing technologies, when a motor gets stuck in the linkage structure of an external device, it leads to a decrease in the motor's lifespan and damage to the internal structure of the device.
The coupling design includes a first fixed sleeve, a second fixed sleeve, a first connecting plate, and a second connecting plate. Through the cooperation of the guide slope and the stabilizing spring, the sliding and rotation of the drive block are realized, preventing the connecting rod from rotating and protecting the motor and equipment.
When the linkage structure jams, the motor life remains unchanged, and equipment wear is prevented, thus improving connection stability and service life.
Smart Images
Figure CN224054025U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of shaft accessories, in particular to a motor shaft. BACKGROUND
[0002] The motor is a kind of equipment for converting electric energy into mechanical energy, which utilizes the rotating magnetic field generated by the coil to form a magnetic electric power rotating torque on the rotor. The connecting rod of the output shaft of the motor and the external device is usually connected and fixed by a shaft coupling. When the linkage mechanism inside the external device is stuck, the motor will be in a working state after being powered on, which will reduce the service life of the motor and damage the internal structure of the external device. CONTENT OF THE UTILITY MODEL
[0003] The utility model aims at the defects and deficiencies of prior art, and provides a motor shaft.
[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0005] The utility model discloses a motor shaft which comprises an output shaft, a connecting rod and a shaft coupling, the shaft coupling is located between the output shaft and the connecting rod, the shaft coupling comprises a first fixed sleeve, a second fixed sleeve, a first connecting disc and a second connecting disc, one end of the first fixed sleeve is sleeved and fixed on the outer end of the output shaft, one end of the second fixed sleeve is sleeved and fixed on one end of the connecting rod, one end of the first connecting disc is arranged on the other end of the first fixed sleeve, one end of the second connecting disc is arranged on the other end of the second fixed sleeve, the first connecting disc and the second connecting disc are in contact with each other, a driving block is connected and fixed on one end of the first connecting disc close to the second connecting disc, a fixed groove for inserting and matching the driving block is formed in one end of the second connecting disc, and guide inclined surfaces are formed on the both sides of the outer end of the driving block.
[0006] Preferably, one end of the first fixed sleeve is provided with a sliding groove for inserting and sliding the first connecting disc, a stabilizing spring is arranged between the first connecting disc and the sliding groove, and the stabilizing spring drives the first connecting disc and the second connecting disc to be in close contact with each other.
[0007] Preferably, the side wall of the sliding groove is provided with a limiting strip in the depth direction, and the side wall of the first connecting disc is provided with a limiting groove for sliding the limiting strip.
[0008] Preferably, one end of the first connecting disc is provided with a mounting groove, and one end of the driving block is inserted and fixed in the mounting groove.
[0009] Preferably, the outer end of the driving block is in the shape of a circular arc.
[0010] Preferably, the second connecting disc is uniformly provided with a plurality of embedding grooves on the circumference, and the second fixing sleeve is uniformly provided with a plurality of fixing rods on one end in the circumferential direction, and the fixing rods are installed and fixed in the embedding grooves.
[0011] Preferably, the first fixing sleeve is composed of two first half sleeves, the inner sides of the two first half sleeves are locked to each other, the second fixing sleeve is composed of two second half sleeves, and the inner sides of the two second half sleeves are locked to each other.
[0012] To sum up, the application has at least one of the following beneficial technical effects:
[0013] 1. When the linkage structure in the external device is stuck, the motor is in a working state, the driving block slides out of the fixed groove under the action of the guide slope, the stabilizing spring is compressed at the same time, the first connecting disc and the second connecting disc rotate relative to each other, the connecting rod of the external device does not rotate, the linkage structure in the external device is not abraded, and the service life of the motor remains unchanged;
[0014] 2. The first connecting disc stably slides in the sliding groove under the mutual sliding of the limiting strip and the limiting groove, and the stability of the first connecting disc is improved;
[0015] 3. When the first fixing sleeve and the second fixing sleeve need to be installed, the two first half sleeves and the two second half sleeves are respectively spliced and fixed to form the first fixing sleeve and the second fixing sleeve. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is a structural schematic view of the motor shaft of the utility model;
[0017] Figure 2 is a sectional view of the motor shaft of the utility model;
[0018] Figure 3 is an exploded schematic view of the motor shaft of the utility model.
[0019] In the drawing: 1, output shaft; 2, connecting rod; 3, shaft coupling; 4, first fixing sleeve; 5, second fixing sleeve; 6, first connecting disc; 7, second connecting disc; 8, sliding groove; 9, limiting strip; 10, limiting groove; 11, placing groove; 12, stabilizing spring; 13, mounting groove; 14, driving block; 15, guide slope; 16, fixed groove; 17, circular arc; 18, embedding groove; 19, fixing rod; 20, first half sleeve; 21, second half sleeve. DETAILED DESCRIPTION
[0020] The utility model will be further described below in combination with the drawings.
[0021] The embodiment of the application discloses a motor shaft.
[0022] Referring to Figure 1 and Figure 2 , including the output shaft 1, connecting rod 2 and coupling 3, coupling 3 is located between the output shaft 1 and connecting rod 2, coupling 3 includes the first fixed sleeve 4, the second fixed sleeve 5, the first connecting disc 6 and the second connecting disc 7, one end of the first fixed sleeve 4 is sleeved and fixed to the outer end of the output shaft 1, one end of the second fixed sleeve 5 is sleeved and fixed to one end of the connecting rod 2, one end of the first connecting disc 6 is arranged at the other end of the first fixed sleeve 4, one end of the second connecting disc 7 is arranged at the other end of the second fixed sleeve 5, the first connecting disc 6 and the second connecting disc 7 are in contact with each other.
[0023] Referring to Figure 3 , the outer end of the first fixed sleeve 4 is provided with a sliding groove 8, one end of the first connecting disc 6 is inserted and slid in the sliding groove 8, the side wall of the sliding groove 8 is integrally provided with a limiting strip 9 along the depth direction, the side wall of the first connecting disc 6 is provided with a limiting groove 10, and the limiting strip 9 is slid in the limiting groove 10. When the first connecting disc 6 slides in the sliding groove 8, under the cooperation of the limiting strip 9 and the limiting groove 10, the first connecting disc 6 can be prevented from rotating, and the stability of the first connecting disc 6 is improved.
[0024] The first fixed sleeve 4 is provided with a placing groove 11 at the bottom of the sliding groove 8, and a stabilizing spring 12 is placed in the placing groove 11. The outer end of the stabilizing spring 12 abuts against the inner end face of the first connecting disc 6. Under the pushing of the stabilizing spring 12, the first connecting disc 6 and the second connecting disc 7 can be tightly attached.
[0025] The outer end face of the first connecting disc 6 is uniformly provided with three mounting grooves 13, and a driving block 14 is inserted and fixed in the mounting groove 13. Corresponding to the two sides of the outer end of the driving block 14, a guide inclined surface 15 is formed. The outer end face of the second connecting disc 7 is uniformly provided with three fixing grooves 16, and one end of the driving block 14 is clamped and fixed in the fixing groove 16. Under the action of the guide inclined surface 15, the driving block 14 can slide out of the fixing groove 16, and at the same time, the stabilizing spring 12 is compressed, so that the first connecting disc 6 and the second connecting disc 7 rotate relatively, and the connecting rod 2 of the external device cannot rotate.
[0026] The tip of the driving block 14 is provided with a circular arc 17. When one end of the driving block 14 is separated from the fixing groove 16, because the tip of the driving block 14 is in the form of a circular arc 17, the tip of the driving block 14 will not wear the end face of the second connecting disc 7.
[0027] The three embedding grooves 18 are evenly arranged on the circumferential side of the second connecting disc 7, and the three fixing rods 19 are evenly arranged on the outer circumferential side of one end of the second fixing rod 19, and the fixing rods 19 are inserted and fixed in the embedding grooves 18. When the second connecting disc 7 is installed on one end of the second fixing rod 19, the three fixing rods 19 are respectively inserted into the three embedding grooves 18.
[0028] The first fixing sleeve 4 is composed of two first half sleeves 20, and the second fixing sleeve 5 is composed of two second half sleeves 21. The two first half sleeves 20 and the two second half sleeves 21 vertically divide the first fixing sleeve 4 and the second fixing sleeve 5 respectively. The two first half sleeves 20 are combined into the first fixing sleeve 4 by bolts, and the two second half sleeves 21 are combined into the second fixing sleeve 5 by bolts.
[0029] The above is only the preferred embodiment of the present application, so equivalent changes or modifications made according to the structure, features and principles described in the patent application range of the present application are included in the patent application range of the present application.
Claims
1. An electric machine shaft comprising an output shaft (1), a connecting rod (2) and a coupling (3) located between the output shaft (1) and the connecting rod (2), characterized in that: The coupling (3) comprises a first fixed sleeve (4), a second fixed sleeve (5), a first connecting disc (6) and a second connecting disc (7), one end of the first fixed sleeve (4) is sleeved and fixed to the outer end of the output shaft (1), one end of the second fixed sleeve (5) is sleeved and fixed to one end of the connecting rod (2), one end of the first connecting disc (6) is arranged at the other end of the first fixed sleeve (4), one end of the second connecting disc (7) is arranged at the other end of the second fixed sleeve (5), the first connecting disc (6) and the second connecting disc (7) are in contact with each other, the first connecting disc (6) is connected and fixed with a driving block (14) at one end close to the second connecting disc (7), a fixed groove (16) is formed at one end of the second connecting disc (7) for plug-in cooperation of the driving block (14), and guide inclined surfaces (15) are formed at the both sides of the outer end of the driving block (14).
2. An electric machine shaft according to claim 1, characterized in that One end of the first fixed sleeve (4) is provided with a sliding groove (8) for plug-in sliding of the first connecting disc (6), a stabilizing spring (12) is arranged between the first connecting disc (6) and the sliding groove (8), and the stabilizing spring (12) drives the first connecting disc (6) and the second connecting disc (7) to be in close contact with each other.
3. An electric machine shaft according to claim 2, characterized in that The side wall of the sliding groove (8) is provided with a limiting strip (9) along the depth direction, and the side wall of the first connecting disc (6) is provided with a limiting groove (10) for sliding of the limiting strip (9).
4. The motor shaft of claim 1, wherein One end of the first connecting disc (6) is provided with a mounting groove (13), and one end of the driving block (14) is plug-in fixed in the mounting groove (13).
5. The motor shaft of claim 1, wherein The outer end of the driving block (14) is in a circular arc shape (17).
6. A motor shaft as defined in claim 1, wherein A plurality of embedding grooves (18) are uniformly formed in the circumferential side of the second connecting disc (7), a plurality of fixed rods (19) are uniformly fixed to one end of the second fixed sleeve (5) in the circumferential direction, and the fixed rods (19) are mounted and fixed in the embedding grooves (18).
7. A motor shaft as defined in claim 1, wherein The first fixed sleeve (4) is composed of two first half sleeves (20), the inner sides of the two first half sleeves (20) are in close contact and locked, the second fixed sleeve (5) is composed of two second half sleeves (21), and the inner sides of the two second half sleeves (21) are in close contact and locked.