Novel low-voltage servo motor

Abstract

The utility model discloses a novel low-voltage servo motor, which is characterized in that a front end cover, a motor shell and a middle end cover are connected to form a first accommodating space, the middle end cover and a tail end cover are connected to form a second accommodating space, and a motor central shaft axially penetrates through the first accommodating space and the second accommodating space at the same time. The first accommodating space is mainly provided with a stator iron core and a rotor iron core, a power line wound on the stator iron core extends outwards from the motor shell, a signal line of the encoder extends outwards from the tail end cover, cables of the two accommodating spaces do not interfere with each other, and the power line does not interfere with the signal line of the encoder. And the accuracy of actual detection is ensured. Meanwhile, the encoder is arranged in the tail end cover, so that the encoder does not need to be arranged outside the motor shell in an exposed mode, the overall structure is more compact and more attractive, and installation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field, especially a novel low voltage servo motor. BACKGROUND

[0002] In prior art, motor is applied to various working scenes, such as transmission or rotary drive etc., and servo motor can effectively ensure the continuity of work and realize accurate control, but the servo motor of prior art still needs to be provided with an encoder, if directly connected with the motor in the form of external hanging, the normal work of the encoder can be affected due to the pollution of working environment, therefore, the servo motor is integrated with the encoder, and then integrated installation connection mode needs to be adopted. SUMMARY

[0003] The utility model discloses a kind of novel low voltage servo motors with compact structure and beautiful appearance, to improve the use durability of low voltage servo motor.

[0004] To achieve the above object, the utility model provides a kind of novel low voltage servo motor, including the front end cover, motor shell, intermediate end cover and tail end cover connected in sequence in axis, first accommodating space is formed by the front end cover, motor shell, intermediate end cover connection, intermediate end cover and tail end cover are connected to form second accommodating space, motor center shaft is simultaneously axially through first accommodating space and second accommodating space.

[0005] Preferably, the motor shell is provided with a stator core inside, the stator core is wound with a plurality of groups of electromagnetic coils, and the power lines at both ends of the plurality of groups of electromagnetic coils pass through the motor shell and are connected with the first external connector.

[0006] Preferably, the second accommodating space is provided with an encoder inside, and the signal line of the encoder passes through the tail end cover and is connected with the second external connector.

[0007] Preferably, the power line is fixedly connected with the motor shell by a cable fixator, and the signal line is fixedly connected with the tail end cover by a cable fixator.

[0008] Preferably, the cable fixator comprises a first fixing body and a second fixing body, the first fixing body is fixedly connected with the motor shell in advance, the second fixing body is fixedly connected with the first fixing body, the first fixing body is provided with a conical through hole inside, the second fixing body is provided with a plurality of clamping bodies in a dispersed manner at the bottom, the outer surface of the clamping body is matched with the inner surface of the conical through hole, and when the second fixing body is connected with the first fixing body, the clamping body simultaneously applies clamping force to the center position to clamp and fix the cable.

[0009] Preferably, a conical sealing sleeve is arranged between the outer surface of the clamping body and the inner surface of the conical through hole.

[0010] Preferably, the power line and the signal line are of the same side out type.

[0011] Preferably, the motor central shaft is axially provided with a plurality of rotor core layers, a plurality of magnetic steels are arranged on the outer circumferential surface of each rotor core layer in intervals, and axially non-coincide with two magnetic steels of adjacent layers and close to each other.

[0012] Preferably, the rear surface of the tail end cover is provided with a plurality of cooling fins.

[0013] The technical scheme of the utility model has the following advantages relative to the prior art:

[0014] The novel low-voltage servo motor of the utility model technical scheme comprises a front end cover, a motor shell, an intermediate end cover and a tail end cover which are sequentially connected in an axial direction, a first containing space is formed by connecting the front end cover, the motor shell and the intermediate end cover, a second containing space is formed by connecting the intermediate end cover and the tail end cover, and a motor central shaft simultaneously axially penetrates through the first containing space and the second containing space. The first containing space is mainly provided with a stator core and a rotor core, a power line wound on the stator core extends outward from the motor shell, a signal line of an encoder extends outward from the tail end cover, the cables in the two containing spaces do not interfere with each other, the power line does not interfere with the signal line of the encoder, and the accuracy of actual detection is ensured. At the same time, the encoder is arranged inside the tail end cover, so that the encoder is not arranged in an exposed form outside the motor shell, which is very important for ensuring the normal operation of the encoder, and makes the overall structure more compact, more beautiful and easier to install. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained from the structure shown in the drawings without creative labor.

[0016] Figure 1 It is a structure exploded view of the novel low-voltage servo motor of the utility model.

[0017] Figure 2 It is an internal structure schematic view of the cable fixator of the utility model.

[0018] Explanation of reference numerals:

[0019] 1, front end cover; 2, motor housing; 21, stator core; 22, power cord; 23, first external connector; 3, intermediate end cover; 4, tail end cover; 5, motor center shaft; 51, rotor core; 52, magnetic steel; 6, encoder; 61, signal line; 62, second external connector; 7, cable holder; 71, first fixed body; 711, tapered through hole; 72, second fixed body; 721, clamping body; 8, cable; 9, fastener.

[0020] The realization, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] The utility model provides a novel low-voltage servo motor.

[0023] Please see Figure 1 In the novel low-voltage servo motor of the utility model embodiment, the front end cover 1, the motor housing 2, the intermediate end cover 3 and the tail end cover 4 are connected in sequence in the axial direction. The first accommodating space is formed by connecting the front end cover 1, the motor housing 2 and the intermediate end cover 3, the second accommodating space is formed by connecting the intermediate end cover 3 and the tail end cover 4, and the motor center shaft 5 simultaneously passes through the first accommodating space and the second accommodating space in the axial direction.

[0024] Preferably, the motor shell 2 is internally provided with a stator core 21, the stator core 21 is wound with a plurality of electromagnetic coils, the power lines 22 at both ends of the plurality of electromagnetic coils pass through the motor shell 2 and are connected with the first external connector 23, and therefore the stator core 21 is arranged in the first accommodating space. In addition, the second accommodating space is internally provided with an encoder 6, and the signal line 61 of the encoder 6 passes through the tail end cover 4 and is connected with the second external connector 62. The first accommodating space of the utility model mainly has the stator core 21 and the rotor core 51, the power line wound on the stator core 21 extends outward from the motor shell 2, the signal line 61 of the encoder 6 extends outward from the tail end cover 4, the cables of the two accommodating spaces do not interfere with each other, and the power line 21 also does not interfere with the signal line 61 of the encoder 6, thereby ensuring the accuracy of actual detection. At the same time, the encoder 6 is arranged in the tail end cover 4, so that the encoder 6 is not arranged in the form of external leakage outside the motor shell 2, which is very important for ensuring the normal operation of the encoder 6, and makes the overall structure more compact, more beautiful and convenient to install.

[0025] In order to realize sufficient fixation and connection of the power line 22 and the signal line 61, the power line 22 of the utility model is fixed and connected with the motor shell 2 by using the cable fixer 7, and the signal line 61 is fixed and connected with the tail end cover 4 by using the cable fixer 7. The cable fixer 7 comprises a first fixing body 71 and a second fixing body 72, the first fixing body 71 is fixed and connected with the motor shell 2 in advance, then the second fixing body 72 is fixed and connected with the first fixing body 7, the first fixing body 71 is internally provided with a tapered through hole 711, the second fixing body 72 is internally provided with a plurality of clamping bodies 721 in a scattered manner, the outer surface of the clamping body 721 is matched with the inner surface of the tapered through hole 711, when the second fixing body 72 is connected with the first fixing body 71, the clamping body 721 simultaneously applies a clamping force to the center position to clamp and fix the cable 8. In the actual installation process, the first fixing body 71 is first fixed on the surface of the motor shell 2 or the tail end cover 4 in the form of a fixing member, one end of the cable passes through the tapered through hole 711 and then passes through the second fixing body 72, the second fixing body 72 is inserted into the tapered through hole 711 through the clamping body 721 thereof, another fastener 9 is used to fasten and connect the second fixing body 72 with the first fixing body 71, and as the clamping body 721 gradually penetrates into the inside of the tapered through hole 711, the clamping body 721 gradually approaches the cable and the clamping force on the cable gradually increases, so as to sufficiently clamp and fasten the cable.

[0026] Preferably, a tapered sealing sleeve is arranged between the outer surface of the clamping body 721 and the inner surface of the tapered through hole 711, and a cylindrical sealing sleeve is arranged between the inner surface of the clamping body 721 and the cable, so that the sealing performance of the mutual connection position can be greatly improved by arranging the tapered sealing sleeve and the cylindrical sealing sleeve.

[0027] Preferably, the power line 22 and the signal line 61 of the utility model are same side wire outlet mode, so that the whole is more beautiful, and in the actual application process, the operator is more convenient to install and layout cable, and is not easy to interfere.

[0028] Preferably, the motor center shaft 5 of the utility model is axially provided with a plurality of rotor core layers 51, a plurality of magnetic steels 52 are arranged on the outer circumferential surface of each rotor core layer 51, the upper and lower adjacent layers and the two magnetic steels 52 close to each other are not axially coincident, through the two magnetic steels 52 adjacent in the axial direction not completely coincident, or setting the two to offset a certain angle, can make the motor center shaft 5 in the rotating process, the rotating process is more smooth and is not easy to produce noise.

[0029] Preferably, the rear surface of the tail end cover 4 of the embodiment is provided with a plurality of cooling fins, which can improve the heat dissipation performance of the novel low-voltage servo motor.

[0030] The above is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by the utility model specification and the attached drawings under the concept of the utility model, or direct / indirect application in other related technical fields are included in the patent protection range of the utility model.

Claims

1. A new low voltage servo motor characterized in that, The motor comprises a front end cover, a motor shell, an intermediate end cover and a tail end cover connected in sequence in the axial direction, the first accommodating space is formed by the front end cover, the motor shell and the intermediate end cover, the second accommodating space is formed by the intermediate end cover and the tail end cover, and the motor center shaft passes through the first accommodating space and the second accommodating space in the axial direction at the same time; The motor shell is internally provided with a stator core, the stator core is wound with a plurality of groups of electromagnetic coils, and power lines at two ends of the plurality of groups of electromagnetic coils pass through the motor shell and are connected with the first external connector; The second accommodating space is internally provided with an encoder, and a signal line of the encoder passes through the tail end cover and is connected with the second external connector; The power lines are fixedly connected with the motor shell by using cable fixators, and the signal lines are fixedly connected with the tail end cover by using the cable fixators; The cable fixator comprises a first fixing body and a second fixing body, the first fixing body is fixedly connected with the motor shell in advance, the second fixing body is fixedly connected with the first fixing body, the first fixing body is internally provided with a conical through hole, the second fixing body is provided with a plurality of clamping bodies in a dispersed manner at the bottom, the outer surface of the clamping body is matched with the inner surface of the conical through hole, and when the second fixing body is connected with the first fixing body, the clamping bodies simultaneously apply clamping forces to the central position to clamp and fix the cables.

2. The novel low voltage servo motor as claimed in claim 1, wherein, A conical sealing sleeve is arranged between the outer surface of the clamping body and the inner surface of the conical through hole, and a cylindrical sealing sleeve is arranged between the inner surface of the clamping body and the cable.

3. The novel low voltage servo motor as claimed in claim 1, wherein, The power lines and the signal lines are in the same side wire outlet mode.

4. The novel low voltage servo motor as claimed in claim 1, wherein, The motor center shaft is axially provided with a plurality of rotor core layers, a plurality of magnetic steels are arranged at the outer circumferential surface of each rotor core layer in a spaced manner, and the upper and lower adjacent magnetic steels do not overlap in the axial direction.

5. The novel low voltage servo motor as claimed in claim 1, wherein, The rear surface of the tail end cover is provided with a plurality of cooling fins.

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