CN219543217U - Electric clamping actuator - Google Patents

Abstract

The utility model relates to the technical field of electric actuators, in particular to an electric clamping actuator. The electric clamping actuator comprises a motor, a speed reducer and a clamping jaw assembly; the rotating shaft of the motor is in transmission connection with the input end of the speed reducer, the output end of the speed reducer is in transmission connection with the clamping jaw assembly and used for driving the clamping jaw to clamp or open, the tail end of the rotating shaft is provided with a tooth shaft part, and the tooth shaft part is meshed with the input end gear of the speed reducer. The electric clamping actuator provided by the utility model can increase the power and simultaneously keep or improve the light and thin property; the light and thin performance can be improved, meanwhile, the power is kept or increased, the application scene of the product is enlarged, and the adaptability of the product is optimized.

Description

Electric clamping actuator

Technical Field

The utility model relates to the technical field of electric actuators, in particular to an electric clamping actuator.

Background

The electric clamping actuator is a clamping device driven by electricity, most of the electric clamping actuators comprise a motor, a speed reducer and clamping jaws, and the motor is connected with the clamping jaws through the speed reducer and can drive the clamping jaws to clamp objects.

Generally, parameters such as height, thickness, weight, power and the like of the electric clamping actuator are required to be designed according to actual application scene requirements, and are not easy to consider, for example, when a speed reducing mechanism with a large speed reduction ratio is designed in a product, the height or thickness of the product may be increased, that is, a trade-off is usually performed between the height and the thickness, so that the size and the weight of the product are increased, the thinness and thinness of the product are difficult to maintain, and the requirement of part of application scenes on the thinness and thinness of the product cannot be met; in addition, when the light and thin property of the product is improved, the power of the product is possibly reduced, and the requirement of partial scenes on the power of the product is difficult to meet, so that the product adaptability is poor.

Disclosure of Invention

The utility model aims to provide an electric clamping actuator so as to solve the technical problem of poor adaptability of the electric clamping actuator in the prior art.

The utility model provides an electric clamping actuator which comprises a motor, a speed reducer and a clamping jaw assembly.

The rotating shaft of the motor is in transmission connection with the input end of the speed reducer, the output end of the speed reducer is in transmission connection with the clamping jaw assembly and used for driving the clamping jaw to clamp or open, the tail end of the rotating shaft is provided with a tooth shaft part, and the tooth shaft part is meshed with the input end of the speed reducer through a tooth wheel.

Preferably, as an implementation manner, the housing of the speed reducer and the housing of the motor are locked and fixed through a connecting piece, and the length direction of the connecting piece is consistent with the axial direction of the speed reducer.

Preferably, as an implementation manner, the output end of the speed reducer is provided with a flange, the flange is provided with a first connecting hole, the shell of the speed reducer is provided with a second connecting hole, the motor body is provided with a third connecting hole, and the first connecting hole, the second connecting hole and the third connecting hole are matched with the connecting piece and are used for locking the shell of the speed reducer and the shell of the motor.

Preferably, as an implementation manner, the connecting piece is a threaded connecting piece, the first connecting hole and the second connecting hole are through holes, the third connecting hole is a threaded hole, and the threaded connecting piece can penetrate through the first connecting hole and the second connecting hole and be in threaded fit with the third connecting hole.

Preferably, as an implementation manner, the housing of the speed reducer has a lug part, the lug part protrudes radially outwards from the outer peripheral wall of the housing of the speed reducer, and the second connection hole is formed in the lug part.

Preferably, as an implementation manner, the number of the lug parts is several, and the lug parts are distributed at intervals along the circumferential direction of the speed reducer; and each lug part is provided with a second connecting hole.

Preferably, as an implementation manner, the number of the lug parts is two, and the lug parts are symmetrically arranged at two sides of the speed reducer.

Preferably, as an embodiment, an outer edge of the lug part is flush with an outer edge of the motor body.

Preferably, as an implementation manner, a boss is arranged at the end part of the motor body, the casing of the speed reducer is sleeved on the boss, and the outer side wall of the boss is in contact fit with the inner side wall of the casing of the speed reducer and is used for radially limiting the speed reducer;

and/or, the electric clamping actuator further comprises a band-type brake, and the band-type brake is matched with the tail end of the rotating shaft and can clamp the rotating shaft.

Preferably, as an implementation manner, a reducer end cover is installed at the output end of the reducer, a perforation is formed in the reducer end cover, an output end driving rod of the reducer is matched with the perforation, and a first sealing ring is arranged between the driving rod and the perforation;

and/or, the electric clamping actuator comprises a shell, the motor and the speed reducer are both arranged in the shell, the shell is provided with a main body and a cover body, a second sealing ring is arranged between the main body and the cover body, and a third sealing ring is arranged between the cover body and the end cover of the speed reducer.

Compared with the prior art, the utility model has the beneficial effects that:

according to the electric clamping actuator provided by the utility model, the motor can drive the speed reducer to operate when in operation, and the speed reducer can drive the clamping jaw assembly to act, so that the clamping jaw is clamped or opened, and the clamping function of an object is realized. It should be noted that, compared with the case that the output end of the rotating shaft is sleeved with the gear, the embodiment directly sets a section of gear shaft part with a circle of gear teeth on the rotating shaft, so that the radius of the driving gear corresponding to the circle of gear teeth matched with the input end gear of the speed reducer can be reduced on the basis of proper strength of the rotating shaft, and further, the size of the speed reducer can be reduced on the basis of keeping the power of the product unchanged, so that the product can obtain the primary speed reduction of an ultra-large speed ratio under the condition of shorter height or smaller radial thickness, and provide enough output power for the clamping jaw assembly; also, on the basis of unchanged product size, the power of the speed reducer can be increased, so that the light and thin performance of the product can be improved under larger power.

Therefore, the electric clamping actuator provided by the utility model can increase power and keep or improve the light and thin property; the light and thin performance can be improved, meanwhile, the power is kept or increased, the application scene of the product is enlarged, and the adaptability of the product is optimized.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of a part of a structure of an electric clamping actuator according to an embodiment of the present utility model, wherein a housing is not shown;

FIG. 2 is a cross-sectional view of a portion of the structure of an electric clamp actuator provided in an embodiment of the present utility model;

fig. 3 is a schematic structural view of a rotating shaft of a motor in the electric clamping actuator according to the embodiment of the present utility model;

fig. 4 is a schematic perspective view of an electric clamping actuator according to an embodiment of the present utility model.

Reference numerals illustrate:

100-motor; 110-a rotating shaft; 111-tooth shaft portions; 120-a motor body; 121-a boss; 122-stand; 123-motor end caps;

200-speed reducer; 210-lug part; 220-a drive rod; 230-smoothing the part;

300-jaw assembly;

400-connecting piece;

500-flanges;

600-a first sealing ring;

700-band-type brake;

800-a housing; 810-a body; 820-cover; 830-a second seal ring;

900-reducer end caps; 910-third seal ring.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the term "connected" should be interpreted broadly, and for example, it may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The utility model will now be described in further detail by way of specific examples of embodiments in connection with the accompanying drawings.

Referring to fig. 1-4, the present embodiment provides a motorized grip actuator comprising a motor 100, a decelerator 200, and a jaw assembly 300; the rotating shaft 110 of the motor 100 is in transmission connection with the input end of the speed reducer 200, the output end of the speed reducer 200 is in transmission connection with the clamping jaw assembly 300 and is used for driving clamping jaws to clamp or open, the tail end of the rotating shaft 110 is provided with a tooth shaft portion 111, and the tooth shaft portion 111 is in gear engagement with the input end of the speed reducer 200.

In the electric clamping actuator provided by the embodiment, the motor 100 can drive the speed reducer 200 to operate when in operation, and the speed reducer 200 can drive the clamping jaw assembly 300 to act, so that the clamping jaws are clamped or opened, and the clamping function of an object is realized. It should be noted that, compared with the case where the output end of the rotating shaft 110 is sleeved with the gear, the present embodiment directly sets a section of the gear shaft portion 111 with a circle of gear teeth on the rotating shaft 110, which can reduce the radius of the driving gear corresponding to the circle of gear teeth matched with the input end gear of the reducer 200 on the basis of the strength fit of the rotating shaft 110, and further, on the basis of keeping the product power unchanged, can reduce the size of the reducer 200, so that the product can obtain the primary reduction of the ultra-large speed ratio under the condition of a shorter height or a smaller radial thickness, and provide sufficient output power for the clamping jaw assembly 300; also, on the basis of unchanged product size, the power of the speed reducer 200 can be increased, so that the product can be improved in light and thin performance under larger power.

Therefore, the electric clamping actuator provided by the embodiment can keep or improve the light and thin property while increasing the power; the light and thin performance can be improved, meanwhile, the power is kept or increased, the application scene of the product is enlarged, and the adaptability of the product is optimized.

Preferably, the length direction of the connecting piece 400 for locking the housing of the speed reducer 200 and the motor body 120 may be set to be axially consistent with the speed reducer 200, that is, the speed reducer 200 and the motor 100 are fixed together by adopting the axially locked connecting piece 400, and compared with the mode of adopting transverse locking, the requirement on the height of the boss 121 on the motor 100 is lower, the boss 121 on the motor 100 can be reduced or even removed, the occupation of the boss 121 on the space in the speed reducer 200 is reduced, and the axial height of the speed reducer 200 can be further reduced under the condition that the speed reduction ratio of the speed reducer 200 is unchanged, thereby being beneficial to reducing the axial height of the whole product and making the product lighter and thinner.

Preferably, a flange 210 may be disposed at an output end of the speed reducer 200, a first connection hole is disposed on the flange 210, a second connection hole is disposed on a housing of the speed reducer 200, and a third connection hole is disposed on the motor body 120, and the first connection hole, the second connection hole and the third connection hole are all matched with the connector 400, so that axial locking and fixing of the housing of the speed reducer 200 and the housing of the motor 100 can be realized.

The threaded connection piece 400 may be selected as the connection piece 400, at this time, the first connection hole and the second connection hole may be through holes, the third connection piece may be threaded holes, the threaded connection piece 400 may sequentially pass through the first connection hole on the flange 210 and the second connection hole on the housing of the speed reducer 200, and be screwed into the third connection hole of the motor body 120, and the speed reducer 200 and the motor body 120 may be fixedly connected by screwing the threaded connection piece 400, that is, the threaded connection piece 400 penetrates through the flange 210 and the speed reducer 200, so the fastening effect of the threaded connection piece 400 may be improved, and the operation is convenient; in addition, since the screw coupling 400 locks the decelerator 200 to the motor body 120 by applying an axial pressure to the decelerator 200, an axial pressing force exists between the contact surfaces of the decelerator 2000 and the motor 100, so that a gap between the decelerator 200 and the motor 100 can be eliminated, and the operation stability of the electric clamp actuator can be improved.

Further, the lug part 210 may be disposed on the housing of the speed reducer 200, and the lug part 210 is disposed to protrude radially outward from the outer peripheral wall of the housing of the speed reducer 200, and the lug part 210 is disposed so that other smooth portions of the outer peripheral wall of the housing of the speed reducer 200 are smaller than the same radius as the lug part 210, so that the reduction of the weight of the speed reducer 200 is facilitated by reducing part of the housing of the conventional speed reducer 200 under the condition that the speed ratio is not reduced, and the overall weight of the electric clamping actuator is reduced.

The smooth portion 230 of the housing of the reducer 200 is substantially cylindrical, and the lug portion 210 protrudes from the smooth portion 230, which corresponds to the lug portion 210 having a larger outer diameter than the smooth portion 230.

The shell of the speed reducer 200 can be provided with the plurality of lug parts 210, so that the plurality of lug parts 210 are distributed at intervals along the circumferential direction of the speed reducer 200, and the second connecting holes are formed in each lug part 210, that is to say, the connecting pieces 400 are arranged in a plurality of mode and are distributed along the circumferential direction of the speed reducer 200, the reliability of the screw connecting pieces 400 for fixedly connecting the speed reducer 200 with the motor body 120 can be improved, the speed reducer 200 is not easy to shake relative to the motor 100, and the structural reliability and the running stability are ensured.

Specifically, two lug portions 210 may be provided, and the two lug portions 210 may be symmetrically provided on both sides of the speed reducer 200, so that by providing fewer lug portions 210, a better structural reinforcement effect may be achieved, and thus the stress balance of the speed reducer 200 may be improved.

Preferably, the outer edge of the lug portion 210 and the outer edge of the motor 100 may be set flush with each other, which is advantageous in enlarging the radial dimension of the reduction gear 200, and in reducing the axial height of the reduction gear 200 on the basis of ensuring the reduction ratio of the reduction gear 200.

Preferably, a boss 121 may be disposed at an end of the motor body 120, a casing of the reducer 200 is sleeved on the boss 121, and an outer sidewall of the boss 121 is in contact with an inner sidewall of the casing of the reducer 200, so that the boss 121 can limit the reducer 200 in a radial direction, the reducer 200 is not easy to deviate radially relative to the motor 100, and a radial tangential force applied to a threaded connection 400 connected between the reducer 200 and the motor 100 is reduced, so that connection reliability of the threaded connection 400 is improved. Specifically, the motor body 120 mainly includes a base 122 and a motor end cover 123, and the boss 121 is disposed on the motor end cover 123 of the motor body 120.

In the specific structure of the electric clamping actuator provided in this embodiment, a band-type brake 700 may be further provided, and the band-type brake 700 is matched with the tail end of the rotating shaft 110 of the motor 100, when the product is powered off, the band-type brake 700 may achieve the function of rapidly locking the rotating shaft 110, and the decelerator 200 and the driving rod 220 also stop rotating correspondingly, so as to achieve the function of clamping power-off and self-locking. Specifically, band-type brake 700 may be inverted to the tail end of shaft 110.

Specifically, a reducer end cover 900 is installed at the output end of the reducer 200, a perforation may be formed on the reducer end cover 900, the output end driving rod 220 of the reducer 200 is matched with the perforation, the driving force output by the motor 100 can be transmitted to the driving rod 220 through the reducer 200, and the driving rod 220 is transmitted to the clamping jaw assembly 300 to drive the clamping jaw assembly 300 to act; a sealing ring 600 can be arranged between the driving rod 220 and the perforation, so that sealing protection between the driving rod 220 and the perforation is realized by using the sealing ring 600, and the functions of water resistance, dust resistance and grease splashing prevention during high-speed movement are achieved.

The electric clamping actuator provided by the embodiment further comprises a housing 800, wherein the motor 100 and the speed reducer 200 are both installed in the housing 800, the housing 800 mainly comprises a main body 810 and a cover 820, and a second sealing ring 830 can be arranged between the main body 810 and the cover 820 so as to realize sealing protection between the main body 810 and the cover 820 by using the second sealing ring 830; a third sealing ring 910 may be disposed between the cover 820 and the end cover 900 of the reducer, so as to utilize the third sealing ring 910 to realize sealing protection between the cover 820 and the end cover 900 of the reducer.

In fact, the whole product can achieve a high protection level of IP 67.

In summary, the embodiments of the present utility model disclose an electric clamping actuator, which overcomes many technical drawbacks of the conventional electric clamping actuator, such as: the adaptability is poor. The electric clamping actuator provided by the embodiment of the utility model can increase the power and simultaneously keep or improve the light and thin property; the light and thin performance can be improved, meanwhile, the power is kept or increased, the application scene of the product is enlarged, and the adaptability of the product is optimized.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. An electric clamping actuator is characterized by comprising a motor, a speed reducer and a clamping jaw assembly;

the rotating shaft of the motor is in transmission connection with the input end of the speed reducer, the output end of the speed reducer is in transmission connection with the clamping jaw assembly and used for driving the clamping jaw to clamp or open, the tail end of the rotating shaft is provided with a tooth shaft part, and the tooth shaft part is meshed with the input end of the speed reducer through a tooth wheel.

2. The electric clamp actuator according to claim 1, wherein the housing of the decelerator and the housing of the motor are locked and fixed by a connecting member, and a length direction of the connecting member is consistent with an axial direction of the decelerator.

3. The electric clamping actuator according to claim 2, wherein the output end of the speed reducer is provided with a flange, the flange is provided with a first connecting hole, the housing of the speed reducer is provided with a second connecting hole, the motor body is provided with a third connecting hole, and the first connecting hole, the second connecting hole and the third connecting hole are matched with the connecting piece and are used for locking the housing of the speed reducer and the housing of the motor.

4. The electric clamp actuator of claim 3, wherein the connector is a threaded connector, the first and second connector holes are through holes, the third connector hole is a threaded hole, and the threaded connector can pass through the first and second connector holes to be in threaded engagement with the third connector hole.

5. The electric grip actuator according to claim 3, wherein the housing of the speed reducer has lug portions protruding radially outward from an outer peripheral wall of the housing of the speed reducer, and the second connection holes are opened in the lug portions.

6. The electric clamp actuator according to claim 5, wherein the number of the lug portions is plural and is distributed at intervals along the circumferential direction of the decelerator; and each lug part is provided with a second connecting hole.

7. The electric clamp actuator of claim 6, wherein the number of the lug portions is two and symmetrically disposed on both sides of the decelerator.

8. The electric clamp actuator of claim 5, wherein an outer edge of the tab portion is flush with an outer edge of the motor body.

9. The electric clamping actuator according to claim 1, wherein a boss is arranged at the end part of the motor body, the housing of the speed reducer is sleeved on the boss, and the outer side wall of the boss is in contact fit with the inner side wall of the housing of the speed reducer for radially limiting the speed reducer;

and/or, the electric clamping actuator further comprises a band-type brake, and the band-type brake is matched with the tail end of the rotating shaft and can clamp the rotating shaft.

10. The electric clamping actuator according to claim 1, wherein a reducer end cover is mounted at the output end of the reducer, a through hole is formed in the reducer end cover, an output end driving rod of the reducer is matched with the through hole, and a first sealing ring is arranged between the driving rod and the through hole;

and/or, the electric clamping actuator comprises a shell, the motor and the speed reducer are both arranged in the shell, the shell is provided with a main body and a cover body, a second sealing ring is arranged between the main body and the cover body, and a third sealing ring is arranged between the cover body and the end cover of the speed reducer.