CN219477768U - Deformable motor shaft and motor - Google Patents

Abstract

The utility model provides a deformable motor shaft and a motor, wherein the deformable motor shaft comprises a main shaft body, a main shaft body and a motor body, wherein a through passage is formed in the main shaft body; the circumference of the main shaft body is provided with a plurality of through holes in a circumferential array, the through holes are communicated with the through channels, and the circle centers of the circumferential array and the axes of the through channels are positioned on the axis of the main shaft body; the ejection rod is arranged in the passing channel in a linear movement manner; the gear tooth blocks are correspondingly arranged in the through holes and move linearly along the through holes; wherein the inner end of the gear block surrounds the contact channel; the inner end of the ejector rod is provided with an abutting part, the diameter of the abutting part gradually increases from the direction along the inner end of the ejector rod to the outer end, and the abutting part is used for abutting against the inner wall of the contact channel; when the ejector rod gradually penetrates into the passage, the abutting part is contacted with the inner end of the gear tooth block and drives the gear tooth block to move outwards, so that the outer end of the gear tooth block extends to the outer side of the peripheral surface of the main shaft body.

Description

Deformable motor shaft and motor

Technical Field

The utility model relates to the technical field of motors, in particular to a deformable motor shaft and a motor.

Background

As a common drive source, an electric motor typically includes a housing, a stator and a rotor within the housing, and a motor shaft connected to other mechanisms or devices. After the motor is electrified, the stator is fixed, and the rotor rotates, so that a corresponding magnetic field can be generated to drive the motor shaft to rotate, and the motor can drive other mechanisms or devices. However, the conventional motor is generally equipped with only one motor shaft, such as the motor shaft and motor of chinese patent application No. 202121601629.3, which is disadvantageous in that when a user needs to replace the motor shaft, such as a common motor shaft, to be changed into a gear shaft, the motor shaft needs to be removed and then replaced, and then a gear or a gear shaft is added, which is cumbersome to operate.

Disclosure of Invention

In view of the above, the present utility model aims to provide a deformable motor shaft and a motor, which solve the problems that the motor shaft of the conventional motor is single and the motor shaft is troublesome to replace by the deformation of the motor shaft caused by the fact that the wheel tooth block can retract or extend out of the through hole through the action of the abutting part of the ejector rod on the wheel tooth block.

In order to solve the technical problems, the technical scheme of the utility model is as follows:

a deformable motor shaft comprising:

a main shaft body in which a passage is formed; the circumference of the main shaft body is provided with a plurality of through holes in a circumferential array, the through holes are communicated with the through channels, and the circle centers of the circumferential array and the axes of the through channels are positioned on the axis of the main shaft body;

the ejector rod is arranged in the passing channel in a linear movement manner;

the gear tooth blocks are correspondingly arranged in the through holes and move linearly along the through holes;

wherein the inner end of the gear block surrounds a contact channel; the inner end of the ejector rod is provided with an abutting portion, the diameter of the abutting portion gradually increases from the direction along the inner end of the ejector rod towards the outer end, and the abutting portion is used for abutting against the inner wall of the contact channel.

Preferably, the inner end part of the gear tooth block is provided with an arc-shaped surface; when the inner ends of the gear tooth blocks are abutted together, the arc-shaped surfaces are matched to form the contact channel; the shape of the through passage and the ejector rod is a cylindrical shape which is matched with each other.

Preferably, the arc-shaped surfaces gradually incline downwards from outside to inside, and the contact channels formed by the arc-shaped surfaces and the abutting parts are in a truncated cone shape with the shapes being matched.

Preferably, the gear tooth block comprises a gear tooth end and an abutting end, wherein the gear tooth end is used for extending out of the through hole to be meshed with the gear, and the abutting end is slidably arranged in the through hole and is used for being in contact with the abutting end of the ejector rod; the gear tooth end is prismatic, and the upper end of the through hole is prismatic matched with the gear tooth end.

Preferably, the cross section of the inner end of the through hole is rectangular, and the abutting end of the gear tooth block is matched with the inner end of the through hole; the width of the rectangle is the same as the width of the lower side of the prismatic gear tooth end, and the inner wall of the upper end of the through hole limits the abutting end to move upwards; when the upper side of the abutting end abuts against the inner wall of the upper end of the through hole, the side face of the gear tooth end abuts against the inner wall of the upper end of the through hole, and the upper side of the gear tooth end extends out of the through hole.

Preferably, a fixing device is arranged at the opening of the passage and used for fixing the ejector rod in the passage.

Preferably, the main shaft body is provided with a first fixing hole communicated with the passing channel, the ejector rod is provided with a second fixing hole, and the ejector rod is fixed on the main shaft body by simultaneously penetrating through the first fixing hole and the second fixing hole through the fastener.

The motor comprises a main body and a deformable motor shaft, wherein one end of the deformable motor shaft is arranged in the main body, the other end of the deformable motor shaft extends to the outer side of the main body, and the main body drives the motor shaft to rotate.

Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

1. according to the utility model, the gear tooth block can retract or extend out of the through hole through the action of the abutting part of the ejector rod on the gear tooth block. When the gear tooth block is retracted in the through hole, the motor shaft is a common shaft body. When the gear tooth block extends out of the through hole, the gear tooth block can be used as a gear tooth of a gear, and the deformable motor shaft can be deformed into a gear shaft which is directly connected with the gear. Therefore, the deformation between the common motor shaft and the gear shaft is realized, a user can select to deform into the common motor shaft or the gear shaft according to corresponding production requirements or use environments, additional disassembly and assembly parts are not needed, the operation of the user is more convenient, and the use of the motor shaft can be more flexible.

Simultaneously, the centers of circles of the circumferential arrays of the through holes and the axes of the through channels are all positioned on the axes of the main shaft body, so that concentricity of the gear tooth blocks, the ejector rod and the through channels can be guaranteed, and the gear tooth blocks, the ejector rod and the through channels are coaxially arranged, so that the gear tooth blocks are guaranteed to extend out of the same distance of the main shaft body, the gear tooth blocks are uniformly distributed, and the gear tooth blocks can be meshed with a gear more effectively.

2. The shape design between the through hole and the gear tooth block can also play a role in positioning the gear tooth block, and when the upper side of the abutting end of the gear tooth block abuts against the inner wall of the upper end of the through hole prismatic table shape, the gear tooth end of the gear tooth block can extend out of the through hole and be kept fixed, so that the stable use of the gear tooth block is ensured.

Drawings

FIG. 1 is a schematic diagram of an electric machine;

FIG. 2 is a schematic structural view of a motor shaft;

FIG. 3 is an axial cross-sectional view of a motor shaft;

fig. 4 is a radial cross-sectional view of a motor shaft.

Reference numerals: 1. a main shaft body; 11. a pass-through channel; 12. a through hole;

2. an ejector rod; 21. an abutting portion;

3. a gear tooth block; 31. a gear tooth end; 32. an abutment end; 33. an arc surface;

4. a contact channel;

5. a fixing device; 51. a first fixing hole; 52. a second fixing hole; 53. a fastener;

100. a motor shaft; 200. a main body.

Detailed Description

The following detailed description of the utility model is provided in connection with the accompanying drawings to facilitate understanding and grasping of the technical scheme of the utility model.

As shown in fig. 1, an electric motor includes a main body 200 and a deformable motor shaft 100. The main body 200 is a housing, a stator and a rotor of the motor. One end of the motor shaft 100 is arranged in the main body 200, the other end extends to the outer side of the main body 200, and the motor shaft 100 can be driven to rotate by acting force generated by rotation between the stator and the rotor after the motor is electrified, so that the motor shaft 100 is driven by the main body 200.

As shown in fig. 1 to 4, the deformable motor shaft 100 includes a main shaft body 1, an ejector rod 2, and a plurality of gear tooth blocks 3. The main shaft body 1 is connected with the main body 200, and a passage channel 11 is formed in the main shaft body 1. The circumference of the main shaft body 1 is provided with a plurality of through holes 12 which are arranged in a circumferential array, the through holes 12 are communicated with the through passage 11, and the circle center of the circumferential array and the axis of the through passage 11 are positioned on the axis of the main shaft body 1. The ejector rod 2 is arranged in the passage 11 in a linearly movable manner. The plurality of gear tooth blocks 3 are correspondingly arranged in the plurality of through holes 12 and move along the through holes 12 in a straight line.

Wherein, as shown in fig. 3 and 4, the inner end of the gear tooth block 3 is surrounded to form a contact channel 4; the inner end of the ejector rod 2 is provided with an abutment portion 21, the diameter of the abutment portion 21 gradually increasing from the inner end toward the outer end along the ejector rod 2, the abutment portion 21 being for abutment against the inner wall of the contact passage 4.

When the ejector rod 2 gradually penetrates through the passage 11, the abutting end 32 of the ejector rod 2 contacts with the inner end of each gear tooth block 3 by abutting against the inner wall of the contact passage 4, and the gear tooth blocks 3 are driven to move outwards by the change of the diameter of the ejector rod until the outer end of the gear tooth block 3 extends to the outer side of the peripheral surface of the main shaft body 1, and finally the deformation of the motor shaft 100 is completed.

In this embodiment, the abutting portion 21 of the ejector rod 2 acts on the gear tooth block 3, so that the gear tooth block 3 can retract or extend out of the through hole 12. When the gear tooth block 3 is retracted in the through hole 12, the motor shaft 100 is a common shaft body. When the gear tooth block 3 extends out of the through hole 12, the gear tooth block 3 can be used as a gear tooth of a gear, and the deformable motor shaft 100 can be deformed into a gear shaft which is directly connected with the gear. Therefore, the deformation between the common motor shaft 100 and the gear shaft is realized, a user can select to deform into the common motor shaft 100 or the gear shaft according to corresponding production requirements or use environments, no additional disassembly and assembly parts are needed, the operation of the user is more convenient, and the use of the motor shaft 100 can be more flexible.

Simultaneously, the circle centers of the circumferential arrays of the through holes 12 and the axes of the through channels 11 are all positioned on the axis of the main shaft body 1, so that concentricity of the gear tooth blocks 3, the ejector rod 2 and the through channels 11 can be ensured, and the three are coaxially arranged, so that the same distance that the plurality of gear tooth blocks 3 extend out of the main shaft body 1 is ensured, the distribution of the gear tooth blocks 3 is kept uniform, and the gear tooth blocks 3 can be meshed with a gear more effectively.

Referring to fig. 3 and 4, the lower end of the gear tooth block 3 is provided with an arc surface 33, and when the inner ends of the gear tooth blocks 3 are abutted together, the arc surfaces 33 cooperate to form a contact channel 4; the passage 11 and the ejector rod 2 are cylindrical in shape. Therefore, when the ejector rod 2 deflects, the ejector rod 2 can be always matched with the gear tooth block 3 through the cylindrical design of the ejector rod 2, and the stable driving of the ejector rod 2 to the gear tooth block 3 is ensured.

Further, the arc surface 33 may be disposed horizontally or obliquely, and only needs to be able to contact the abutment 21, so that the abutment 21 can effectively drive the gear tooth block 3. As shown in fig. 3, in this embodiment, the arcuate surfaces 33 are preferably inclined gradually downward from outside to inside, and the contact channels 4 and the abutting portions 21 formed by the arcuate surfaces 33 are shaped like a truncated cone. Thereby the contact range between the contact channel 4 and the abutting part 21 is larger, the contact channel 4 and the abutting part 21 can be more fit, and the abutting part 21 can drive the gear tooth block 3 to move more stably and effectively.

Referring to fig. 3 and 4, the cog block 3 includes a cog end 31 and an abutment end 32, the cog end 31 is configured to extend out of the through hole 12 and engage with the gear, and the abutment end 32 is slidably disposed in the through hole 12 and is configured to contact with the abutment end 32 of the ejector rod 2; the gear tooth end 31 is in a prismatic table shape, and the upper end of the through hole 12 is in a prismatic table shape matched with the gear tooth end 31. The gear teeth ends 31 in this embodiment are preferably prismatic bodies similar to the gear teeth of a conventional gear, and the intervals between the gear teeth blocks 3 are also the same as those of the conventional gear, so that the gear formed by the gear teeth blocks 3 can be effectively meshed with other conventional gears.

Further, as shown in fig. 4, the cross-sectional shape of the lower end of the through hole 12 is rectangular, the abutment end 32 of the gear tooth block 3 is adapted to the lower end of the through hole 12, and the width of the rectangle is the same as the width of the lower side of the gear tooth end 31 of the pyramid, so that when the abutment end 32 of the gear tooth block 3 moves to the junction of the rectangular section and the pyramid section of the through hole 12, the inner wall of the upper end of the pyramid-shaped through hole 12 restricts the abutment end 32 from moving upward. When the upper side of the abutting end 32 abuts against the inner wall of the upper end of the through hole 12, the side face of the cogged end 31 abuts against the inner wall of the upper end of the through hole 12, and the upper side of the cogged end 31 protrudes out of the through hole 12. Therefore, the shape design between the through hole 12 and the gear tooth block 3 can also play a role in positioning the gear tooth block 3, and when the upper side of the abutting end 32 of the gear tooth block 3 abuts against the inner wall of the prismatic upper end of the through hole 12, the gear tooth end 31 of the gear tooth block 3 can extend out of the through hole 12 and be kept fixed, so that the stable use of the gear tooth block 3 is ensured.

Further, a fixing device 5 is arranged at the opening of the passage 11, and the fixing device 5 is used for fixing the ejector rod 2 in the passage 11. So that the ejector rod 2 can keep fixed, effectively and stably support the gear tooth block 3, the gear tooth block 3 can also keep fixed and stably meshed with the gear, and the gear tooth block 3 is prevented from retracting into the through hole 12.

The fixing device 5 in this embodiment may be a fastener 53 penetrating a hole to connect the ejector rod 2 and the spindle body 1. Or a cylinder is arranged on one side of the motor and connected with the ejector rod 2, and the ejector rod 2 is propped against the cylinder to keep the ejector rod 2 fixed. Or the movement of the ejector rod 2 is restricted by the insertion of a fastener plug into the passage channel 11. As shown in fig. 3, in this embodiment, the main shaft body 1 is preferably provided with a first fixing hole 51 communicating with the through passage 11, the ejector rod 2 is provided with a second fixing hole 52, and the fastener 53 passes through the first fixing hole 51 and the second fixing hole 52 at the same time to fix the ejector rod 2 on the main shaft body 1. Simple structure and easy dismounting.

In this embodiment, the user can change the motor shaft 100 by merely placing the ejector rod 2 in the passage 11. The ejector rod 2 can be driven by a tool which protrudes into the passage channel 11. The outer end of the ejector rod 2 may also be extended out of the through passage 11 for the user to apply force. The main shaft body 1 may have a force application hole formed in one side thereof, and the main shaft body 1 may have a force application block extending out of the force application hole, so that a user may apply force to the force application block to drive the ejector rod 2 to move. The through passage 11 and the ejector rod 2 may be disposed at the outer end of the main shaft body 1 or may be disposed at the inner end of the main shaft body 1, and in this embodiment, it is preferable that the through passage 11 and the ejector rod 2 are disposed at the outer end of the main shaft body, and the opening of the through passage 11 is disposed at the outer end surface of the main shaft body 1, so as to facilitate the operation of a user.

Of course, the above is only a typical example of the utility model, and other embodiments of the utility model are also possible, and all technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of the utility model claimed.

Claims (8)

1. A deformable motor shaft comprising

A main shaft body (1) in which a passage channel (11) is formed; a plurality of through holes (12) which are arranged in a circumferential array are formed on the circumferential surface of the main shaft body (1), the through holes (12) are communicated with the through channels (11), and the circle center of the circumferential array and the axis of the through channels (11) are positioned on the axis of the main shaft body (1);

an ejector rod (2) which is arranged in the passage channel (11) in a linearly movable manner;

the gear tooth blocks (3) are correspondingly arranged in the through holes (12) and move along the through holes (12) in a linear mode;

wherein the inner end of the gear tooth block surrounds and forms a contact channel (4); the inner end of the ejector rod (2) is provided with an abutting portion (21), the diameter of the abutting portion (21) gradually increases from the direction along the inner end of the ejector rod (2) towards the outer end, and the abutting portion (21) is used for abutting against the inner wall of the contact channel (4).

2. The deformable motor shaft of claim 1, wherein: an arc-shaped surface (33) is arranged at the inner end part of the gear tooth block (3); when the inner ends of the gear tooth blocks (3) are abutted together, the arc-shaped surfaces (33) are matched to form the contact channel (4); the shape of the through passage (11) and the ejection rod (2) is a cylindrical shape which is matched with each other.

3. The deformable motor shaft of claim 2, wherein: the arc-shaped surfaces (33) gradually incline downwards from outside to inside, and the contact channels (4) formed by the arc-shaped surfaces (33) and the abutting parts (21) are in a truncated cone shape with the shapes being matched.

4. A deformable motor shaft as claimed in any one of claims 1-3, characterized in that: the gear tooth block (3) comprises a gear tooth end (31) and an abutting end (32), wherein the gear tooth end (31) is used for extending out of the through hole (12) to be meshed with a gear, and the abutting end (32) is slidably arranged in the through hole (12) and is used for being in contact with the abutting end (32) of the ejector rod (2); the gear tooth end (31) is in a prismatic table shape, and the upper end of the through hole (12) is in a prismatic table shape matched with the gear tooth end (31).

5. The deformable motor shaft of claim 4, wherein: the section shape of the inner end of the through hole (12) is rectangular, and the abutting end (32) of the gear tooth block (3) is matched with the inner end of the through hole (12); the width of the rectangle is the same as the width of the lower side of the prismatic gear tooth end (31), and the inner wall of the upper end of the through hole (12) limits the abutting end (32) to move upwards; when the upper side of the abutting end (32) abuts against the inner wall of the upper end of the through hole (12), the side face of the gear tooth end (31) abuts against the inner wall of the upper end of the through hole (12), and the upper side of the gear tooth end (31) extends out of the through hole (12).

6. The deformable motor shaft of claim 1, wherein: the opening of the passage (11) is provided with a fixing device (5), and the fixing device (5) is used for fixing the ejector rod (2) in the passage (11).

7. The deformable motor shaft of claim 6, wherein: the main shaft body (1) is provided with a first fixing hole (51) communicated with the passing channel (11), the ejector rod (2) is provided with a second fixing hole (52), and the ejector rod (2) is fixed on the main shaft body (1) by simultaneously penetrating through the first fixing hole (51) and the second fixing hole (52) through a fastener (53).

8. An electric machine comprising a main body (200), characterized in that: a deformable motor shaft (100) according to any one of claims 1-7, which is provided at one end in the main body (200) and at the other end extends to the outside of the main body (200), said main body (200) driving the motor shaft (100) in rotation.