CN113541390A - Speed-reducing linear synchronous motor - Google Patents

Abstract

The invention discloses a deceleration linear synchronous motor, comprising: the motor comprises a motor body, wherein the motor body is provided with a force output shaft for outputting power, and one end of the force output shaft is convexly arranged on the outer side of the motor body; one end of the driven rod is in sliding fit with the output shaft, and the sliding direction of the driven rod is consistent with the axial direction of the output shaft; the screw sleeve is sleeved on the outer peripheral side of the joint of the output shaft and the driven rod and is in threaded connection with the driven rod, and the output shaft is used for driving the driven rod to rotate in the screw sleeve to be far away from or close to the motor body along the axial direction of the output shaft; the motor body can be greatly reduced to bear thrust load when transmitting torque, the service life of the motor body is prolonged, and meanwhile, the output shaft of the motor body does not need to output thrust along axial movement, so that the size of the motor body is greatly reduced, and the portability of the motor body is improved.

Description

Speed-reducing linear synchronous motor

Technical Field

The invention relates to the field of speed reducing motor bodies, in particular to a speed reducing linear synchronous motor.

Background

An electric motor is a device that converts electrical energy into mechanical energy. The electromagnetic power generating device utilizes an electrified coil to generate a rotating magnetic field and acts on a rotor to form magnetoelectric power rotating torque. Generally, the output shaft of the linear motion synchronous motor with the speed reducer is provided with an external thread, and the threaded structure of the output shaft has two motion modes: one is that the output shaft is fixed, the internal thread cooperates the part to move forward and backward and output the thrust, transmit the turning moment to the internal thread cooperates the part to turn into the linear motion of the adjustable position, pressure of the interaction, this way is while outputting the axial fixation of the shaft, the thread of the output shaft must bear the great thrust load while transmitting the moment, this load is too big and causes the part contacting with output shaft such as bearing, etc. to damage easily, thus cause the life-span of the motor body to shorten; in the other movement mode, the internal threads are matched with the parts for fixing, the output shaft moves back and forth to output thrust, the output shaft needs to move back and forth to output thrust, when the stroke is large, the output gear on the output shaft is influenced, the gear box is large, the small-size motor body is unfavorable, and the portability of the motor body is seriously influenced. In addition, the synchronous motor can be additionally provided with an external rotation-to-linear motion structure to achieve linear motion of adjustable position and pressure, and when the output shaft moves axially, the external rotation-to-linear motion structure causes cost increase and poor concentricity caused by matching of multiple parts, so that the service life of the equipment is shortened.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a speed-reducing linear synchronous motor, which can greatly reduce the thrust load borne by the output shaft of the motor body when transmitting torque, prolong the service life of the motor body, and simultaneously enable the output shaft of the motor body not to output thrust in an axial movement manner, greatly reduce the size of the motor body and improve the portability of the motor body.

According to a first aspect embodiment of the present invention, a deceleration linear synchronous motor includes: the motor comprises a motor body, wherein the motor body is provided with a force output shaft for outputting power, and one end of the force output shaft is convexly arranged on the outer side of the motor body; one end of the driven rod is in sliding fit with the output shaft, and the sliding direction of the driven rod is consistent with the axial direction of the output shaft; the screw sleeve is sleeved on the outer peripheral side of the joint of the output shaft and the driven rod and is in threaded connection with the driven rod, and the output shaft is used for driving the driven rod to be rotationally far away from or close to the motor body in the screw sleeve along the axis direction of the output shaft.

The speed-reducing linear synchronous motor provided by the embodiment of the invention at least has the following beneficial effects:

through the one end with the driven lever and output shaft sliding fit, the driven lever can slide along the axis direction of output shaft, and locate the periphery side of output shaft and driven lever junction with the screw sleeve cover, screw sleeve and driven lever threaded connection, make motor body's output shaft can drive the driven lever and rotate in screw sleeve, the driven lever is pivoted in screw sleeve in-process, the driven lever can be close to or keep away from motor body along the axis direction of output shaft under the effect of helicitic texture, thereby avoid motor body to bear great thrust load when transmission moment, the life of extension motor body, and simultaneously, make motor body's output shaft need not export thrust along axial displacement, consequently, reduce motor body's size greatly, improve motor body's portability.

According to some embodiments of the present invention, a clamping block is disposed on the output shaft, and a clamping groove adapted to the clamping block is disposed at one end of the driven rod, and the clamping block is in sliding fit with the clamping groove.

According to some embodiments of the invention, a first limit convex part is convexly arranged on the fixture block, a second limit convex part matched with the first limit convex part is convexly arranged on the inner wall surface of the clamping groove, and the first limit convex part and the second limit convex part cooperate to prevent the fixture block and the clamping groove from being separated from each other along the direction of the axis of the driven rod.

According to some embodiments of the invention, the motor body includes a cover plate therein, and one end of the threaded sleeve is riveted to the cover plate.

According to some embodiments of the present invention, the motor body further includes a power output gear and a driving gear, the power output gear is mounted on the power output shaft, the driving gear is connected to the rotor rotating shaft of the motor body, and the driving gear is in transmission connection with the power output gear.

According to some embodiments of the invention, the motor body is provided with a mounting plate for connecting with external equipment, the mounting plate is provided with a yielding hole, and the threaded sleeve penetrates through the yielding hole and is mounted on the motor body.

According to some embodiments of the invention, the outer side surface of the motor body is provided with a connecting device for connecting with an external power supply device, and the connecting device is in conduction connection with the motor body.

According to some embodiments of the present invention, a peripheral side surface of one end of the driven rod, which is far from the motor body, is of a circular arc surface structure and is provided with a chamfer.

According to some embodiments of the invention, a limit groove is concavely arranged at one end of the threaded sleeve close to the motor body, and the output shaft is rotatably clamped in the limit groove.

According to some embodiments of the invention, a bearing is disposed in the limit groove, the bearing is located between the output shaft and the threaded sleeve, and the bearing is used for assisting the output shaft and the threaded sleeve to rotate relatively.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further described with reference to the following figures and examples, in which:

fig. 1 is a schematic perspective view of a deceleration linear synchronous motor according to an embodiment of the present invention;

fig. 2 is an exploded view of a deceleration linear synchronous motor according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a deceleration linear synchronous motor of an embodiment of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is a cross-sectional view of another angle of the deceleration linear synchronous motor in accordance with the embodiment of the present invention;

fig. 6 is a sectional view of the deceleration linear synchronous motor according to the embodiment of the present invention, in which a bearing is provided.

Reference numerals:

100 motor body, 110 output shaft, 111 fixture block, 112 first limit convex part, 120 mounting plate, 121 abdicating hole, 130 cover plate, 140 output gear, 150 driving gear,

200 threaded sleeves, 210 limit grooves,

300 driven rods, 310 clamping grooves, 311 second limit convex parts,

400 connecting device,

500 bearing.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

A deceleration linear synchronous motor according to an embodiment of the present invention is described below with reference to fig. 1 to 6.

As shown in fig. 1 to 6, the deceleration linear synchronous motor according to the embodiment of the present invention includes a motor body 100, a driven rod 300, and a threaded sleeve 200.

The motor body 100 is provided with a force output shaft 110 for outputting power, and one end of the force output shaft 110 is convexly arranged at the outer side of the motor body 100; one end of the driven rod 300 is in sliding fit with the output shaft 110, and the sliding direction of the driven rod 300 is consistent with the axial direction of the output shaft 110; the threaded sleeve 200 is sleeved on the outer peripheral side of the connection position of the output shaft 110 and the driven rod 300, the threaded sleeve 200 is in threaded connection with the driven rod 300, and the output shaft 110 is used for driving the driven rod 300 to rotate in the threaded sleeve 200 to be far away from or close to the motor body 100 along the axial direction of the output shaft 110.

For example, as shown in fig. 1 to 6, the motor body 100 is mainly used for providing a power source, the output shaft 110 is used for transmitting power on the motor body 100 to the outside, the output shaft 110 may be protruded outside the motor body 100, one end of the driven rod 300 is slidably engaged with the output shaft 110, the driven rod 300 may slide relative to the output shaft 110, a sliding direction of the driven rod 300 is the same as an axial direction of the output shaft 110, the motor body 100 may drive the driven rod 300 to rotate through the output shaft 110, the threaded sleeve 200 may be fixed in the axial direction of the output shaft 110, the threaded sleeve 200 is sleeved on an outer circumferential side of a connection portion of the output shaft and the driven rod 300, and the threaded sleeve 200 is in threaded connection with the driven rod 300, the output shaft 110 can drive the driven rod 300 to rotate in the threaded sleeve 200 to move away from or close to the motor body 100 along the axial direction of the output shaft 110.

Wherein, the threaded sleeve 200 is fixed on the motor body and sleeved on the periphery of the connection of the output shaft and the driven rod 300.

Specifically, by sliding fitting one end of the driven rod 300 with the output shaft 110, the driven rod 300 can slide along the axial direction of the output shaft 110, and sleeving the threaded sleeve 200 on the outer periphery of the connection between the output shaft 110 and the driven rod 300, the threaded sleeve 200 is in threaded connection with the driven rod 300, so that the output shaft 110 of the motor body 100 can drive the driven rod 300 to rotate in the threaded sleeve 200, and in the process that the driven rod 300 rotates in the threaded sleeve 200, the driven rod 300 can approach or separate from the motor body 100 along the axial direction of the output shaft 110 under the action of the threaded structure, thereby avoiding the motor body 100 from bearing a large thrust load when transmitting torque, prolonging the service life of the motor body 100, and simultaneously, making the output shaft 110 of the motor body 100 not need to output thrust along axial movement, so that a output gear with a small tooth width can be adopted in the motor body 100, the size of the motor body 100 is greatly reduced and the portability of the motor body 100 is improved.

In a further embodiment of the present invention, a latch 111 is disposed on the output shaft 110, a slot 310 adapted to the latch 111 is disposed at one end of the driven rod 300, and the latch 111 is slidably engaged with the slot 310. For example, as shown in fig. 2 to 4, by providing the latch 111 on the output shaft 110 and the latch slot 310 on the driven rod 300, the structure that the latch 111 is latched in the latch slot 310 is similar to the structure that a key is inserted into a keyhole, when the latch 111 rotates around the axis of the driven rod 300, the driven rod 300 can be driven to rotate together, which is similar to the action of rotating and unlocking the key, meanwhile, the latch 111 and the latch slot 310 can slide relatively along the direction of the axis of the driven rod 300, which is similar to the action of inserting and pulling the key into the keyhole, such a design that the latch 111 can drive the driven rod 300 to rotate together, but does not limit the relative sliding between the latch 111 and the latch slot 310.

In a further embodiment of the present invention, a first limit protrusion 112 protrudes from the latch 111, a second limit protrusion 311 protrudes from an inner wall surface of the latch slot 310, the second limit protrusion being matched with the first limit protrusion 112, and the first limit protrusion 112 and the second limit protrusion 311 cooperate to prevent the latch 111 and the latch slot 310 from being separated from each other along the direction of the axis of the driven rod 300. For example, as shown in fig. 2 to 4, the first limiting protrusion 112 is disposed on the latch 111, and the second limiting protrusion 311 is disposed on the inner wall surface of the slot 310 in a protruding manner, wherein the first limiting protrusion 112 is disposed at the outer end of the latch 111, and the second limiting protrusion 311 is disposed at the outer end of the slot 310, so that when the latch 111 and the slot 310 slide along the mutually away direction, the latch 111 does not disengage from the slot 310, the latch 111 and the slot 310 can maintain the clamping relationship, so that the motor body 100 can continuously drive the driven rod 300 to rotate in the threaded sleeve 200, and the driven rod 300 can move in the threaded sleeve 200 along the direction close to or away from the motor body 100.

In a further embodiment of the present invention, a cover plate 130 is included in the motor body 100, and one end of the threaded sleeve 200 is riveted to the cover plate 130. For example, as shown in fig. 2 to 5, the cover plate 130 is disposed on the motor body 100, the cover plate 130 is mainly used for protecting the gear set inside the motor body 100, and preventing external liquid and impurities from entering the motor body 100 to damage the gear set for transmission, a through hole is formed in the cover plate 130, the output shaft 110 inside the motor body 100 passes through the cover plate 130 and extends out of the motor body 100, in this embodiment, the threaded sleeve 200 is riveted on the cover plate 130 and sleeved on the outer peripheral side of the output shaft 110, and the threaded sleeve 200 is riveted on the cover plate 130, so that the threaded sleeve 200 can be stably fixed on the motor body 100, and in the process of outputting power to the driven rod 300 by the output shaft 110, the threaded sleeve 200 does not move, and efficiency and stability in the transmission process of the motor body 100 are improved.

In a further embodiment of the present invention, the motor body 100 further includes a force output gear 140 and a driving gear 150, the force output gear 140 is mounted on the force output shaft 110, the driving gear 150 is connected to a rotor rotating shaft of the motor body 100, and the driving gear 150 is in transmission connection with the force output gear 140. For example, as shown in fig. 2 to 6, after the motor body 100 is started, the external power supply provides electric energy to drive the driving gear 150 inside the motor body 100 to rotate, and then the multi-stage reduction gear is used to reduce the speed and drive the output gear 140 to rotate, or the output gear 140 is directly driven to rotate, and then the output gear 140 drives the output shaft 110 to rotate, so as to implement power output. Because, this linear synchronous motor's motor body 100 adopts output shaft 110 to drive driven lever 300 and rotates in threaded sleeve 200, driven lever 300 is at the pivoted in-process in threaded sleeve 200, driven lever 300 is close to or keeps away from motor body 100 along the axis direction of output shaft 110 under the effect of helicitic texture, realize the power take off along the axis direction of output shaft 110 through this kind of mode, make output shaft 110 need not remove along its axial direction, thereby need not add the structure of establishing external rotation change linear motion in motor body 100's outside, avoid the cost of manufacture to increase, and avoided the problem that the synchronous motor life that the concentricity that many parts cooperation leads to is not good shortens that leads to, the portability of motor body 100 has still been improved simultaneously.

In a further embodiment of the present invention, a mounting plate 120 for connecting with an external device is disposed on the motor body 100, a relief hole 121 is formed through the mounting plate 120, and the threaded sleeve 200 is mounted on the motor body 100 through the relief hole 121. For example, as shown in fig. 1 to 6, in this embodiment, the mounting plate 120 is fixed on the cover plate 130, the mounting plate 120 and the cover plate 130 are fixed together by a fastener, a yielding hole 121 is formed in the mounting plate 120, the yielding hole 121 is opposite to a through hole in the cover plate 130, after the output shaft 110 passes through the through hole in the cover plate 130, the output shaft passes through the yielding hole 121 and extends out of the motor body 100, the yielding hole 121 can perform a yielding function, the mounting plate 120 is further provided with a locking hole, and a worker can connect the motor body 100 with an external device by the fastener through the locking hole.

In a further embodiment of the present invention, a connection device 400 for connecting with an external power supply device is disposed on an outer side surface of the motor body 100, and the connection device 400 is conductively connected with the motor body 100. For example, as shown in fig. 1, 2 and 5, the connection device 400 includes a terminal and a circuit board, the terminal is disposed at one side of the motor body 100, when a user needs to use the synchronous motor, the connection terminal of the external power supply device is connected to the connection device 400 in a conduction manner, power can be directly supplied to the inside of the motor body 100 through the connection device 400, and then the synchronous motor is started.

In a further embodiment of the present invention, a peripheral side surface of one end of the driven lever 300, which is away from the motor body 100, is of a circular arc surface structure and is provided with a chamfer. For example, as shown in fig. 1 to 3, 5 and 6, one end of the driven rod 300 close to the motor body 100 is slidably connected to the output shaft 110, and one end of the driven rod 300 far from the motor body 100 is in contact with an external device, and is mainly used for providing thrust in the axial direction of the output shaft 110, and the peripheral side surface of the end is in a circular arc surface structure and is provided with a chamfer, so that the end of the driven rod 300 in contact with the external device is as smooth as possible, and damage to the outer surface of the external device to be pushed due to excessive thrust is avoided.

In a further embodiment of the present invention, a limiting groove 210 is concavely disposed at one end of the threaded sleeve 200 close to the motor body 100, and the output shaft 110 is rotatably engaged in the limiting groove 210. For example, as shown in fig. 3 to 6, the limiting groove 210 is a groove with a cylindrical structure, an annular protrusion is provided in the middle of the output shaft 110, when assembling, a worker engages the annular protrusion in the groove, and at the same time, the output gear 140 engages the other side of the annular protrusion, so that the output shaft 110 can be prevented from moving along the axial direction thereof and the output shaft 110 can be prevented from shifting in the axial direction through the output gear 140 and the limiting groove 210, so that the motor body 100 is more stable and efficient in the process of outputting power, and the service life of the linear synchronous motor is prolonged.

In a further embodiment of the present invention, a bearing 500 is disposed in the limiting groove 210, the bearing 500 is located between the output shaft 110 and the threaded sleeve 200, and the bearing 500 is used for assisting the output shaft 110 and the threaded sleeve 200 to rotate relatively. For example, as shown in fig. 6, the driving gear 150 inside the motor body 100 drives the output gear 140 and the output shaft 110 to rotate together, the output shaft 110 passes through the abdicating hole 121 and extends out of the motor body 100, power output is realized through rotation of the output shaft 110, and the bearing 500 is disposed in the limiting groove 210, so that friction generated by relative rotation between the output shaft 110 and the threaded sleeve 200 can be reduced, and the power output efficiency of the output shaft 110 is higher.

The working principle of the speed-reducing linear synchronous motor is as follows:

firstly, the threaded sleeve 200 is riveted on the cover plate 130 of the motor body 100, then the first limit protrusion 112 on the fixture block 111 is clamped into the clamping groove 310 from the side surface of the clamping groove 310, meanwhile, the fixture block 111 is clamped between the two second limit protrusions 311, so that the fixture block 111 can be clamped in the clamping groove 310 in a sliding manner, then, one end of the driven rod 300 far away from the output shaft 110 is screwed into the threaded sleeve 200 along the thread from the end where the threaded sleeve 200 is riveted with the cover plate 130, then, the annular bump in the output shaft 110 is clamped in the limit groove 210, then, the output shaft 110 is clamped on the output gear 140, meanwhile, the cover plate 130 is locked on the motor body 100, then, the motor body 100 is started, the output shaft 110 on the motor body 100 rotates to drive the driven rod 300 to rotate in the threaded sleeve 200, the driven rod 300 is matched with the threaded sleeve 200 to approach or depart from the motor body 100 along the axial direction of the output shaft 110 during the rotation process, and realizing power output.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

Claims (10)

1. Speed reduction linear synchronous motor, its characterized in that includes:

the motor comprises a motor body, wherein the motor body is provided with a force output shaft for outputting power, and one end of the force output shaft is convexly arranged on the outer side of the motor body;

one end of the driven rod is in sliding fit with the output shaft, and the sliding direction of the driven rod is consistent with the axial direction of the output shaft;

the screw sleeve is sleeved on the outer peripheral side of the joint of the output shaft and the driven rod and is in threaded connection with the driven rod, and the output shaft is used for driving the driven rod to be rotationally far away from or close to the motor body in the screw sleeve along the axis direction of the output shaft.

2. The deceleration linear synchronous motor according to claim 1, wherein a clamping block is disposed on the output shaft, and a clamping groove adapted to the clamping block is disposed at one end of the driven rod, and the clamping block is in sliding fit with the clamping groove.

3. The deceleration linear synchronous motor according to claim 2, wherein a first limit protrusion is protruded from the fixture block, a second limit protrusion matched with the first limit protrusion is protruded from an inner wall surface of the clamping groove, and the first limit protrusion and the second limit protrusion cooperate to prevent the fixture block and the clamping groove from being separated from each other along the direction of the axis of the driven rod.

4. The decelerating linear synchronous machine according to claim 1, wherein a cover plate is included in the machine body, one end of the threaded sleeve being riveted onto the cover plate.

5. The deceleration linear synchronous motor of claim 1 further comprising a power gear and a drive gear in said motor body, said power gear being mounted on a power shaft, said drive gear being connected to a rotor shaft of said motor body, said drive gear being drivingly connected to said power gear.

6. The deceleration linear synchronous motor according to any one of claims 1 to 3, wherein a mounting plate for connecting with an external device is provided on the motor body, a yielding hole is provided through the mounting plate, and the threaded sleeve is mounted on the motor body through the yielding hole.

7. The decelerating linear synchronous motor according to any of claims 1 to 3, wherein the outer side of the motor body is provided with a connecting device for connecting with an external power supply device, the connecting device being conductively connected with the motor body.

8. The decelerating linear synchronous motor according to any one of claims 1 to 3, wherein a peripheral side surface of an end of the driven rod remote from the motor body is of a circular arc surface structure and is provided with a chamfer.

9. The decelerating linear synchronous motor according to any of claims 1 to 3, wherein a limit groove is concavely provided at an end of the threaded sleeve close to the motor body, and the output shaft is rotatably engaged in the limit groove.

10. The decelerating linear synchronous motor according to claim 9, wherein a bearing is provided in said limiting groove, said bearing being located between the output shaft and the threaded sleeve, said bearing being adapted to assist in effecting relative rotation between the output shaft and the threaded sleeve.

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