Telescopic electric cylinder

Abstract

The utility model discloses a telescopic electric cylinder which comprises a shell, an electric cylinder body, an electric cylinder body and an electric cylinder body. The rear sealing cover is arranged at the opening in the rear side of the shell; the front sealing cover is arranged at the opening in the front side of the shell; the frameless motor is arranged in the shell, and a stator of the frameless motor is connected with the inner wall of the shell; the planetary nut is arranged in the shell and is connected with a rotor of the frameless motor; the rear end of the planetary screw rod is meshed with the planetary nut, and the front end of the planetary screw rod penetrates through the front sealing cover and extends to the outside; the mounting seat is connected with the rear end of the planetary nut; and the encoder is connected with the mounting seat. The whole internal structure is simple, visual, compact and orderly, and great convenience is brought to disassembly and maintenance operation of a user.

Description

Technical Field

[0001] This utility model relates to the field of electric cylinder technology, and in particular to a telescopic electric cylinder. Background Technology

[0002] An electric cylinder is a modular product that integrates a servo motor and a lead screw. It can convert the rotary motion of the servo motor into linear motion, while inheriting the advantages of the servo motor such as precise speed control, precise revolution control, and precise torque control, and transforming them into precise speed control, precise position control, and precise thrust control.

[0003] Many electric cylinder products on the market today have relatively complex internal structures and large overall sizes, which not only increases manufacturing costs but also limits their application scenarios to some extent, especially in situations requiring compact design and quick disassembly and maintenance. To address these issues, we have designed a new type of telescopic electric cylinder, aiming to simplify the structure, reduce the size, and improve the ease of disassembly and maintenance. Summary of the Invention

[0004] According to an embodiment of the present invention, a telescopic electric cylinder is provided, comprising:

[0005] The housing has openings on both the front and rear sides;

[0006] The rear cover is located at the rear opening of the housing;

[0007] Front cover, the front cover is located at the front opening of the housing;

[0008] A frameless motor is housed inside a housing, with its stator connected to the inner wall of the housing.

[0009] Planetary nut, which is located inside the housing and connected to the rotor of the frameless motor;

[0010] Planetary screw, the rear end of the planetary screw engages with the planetary nut, and the front end of the planetary screw extends through the front cover to the outside;

[0011] Mounting base, which is connected to the rear end of the planetary nut;

[0012] The encoder is connected to the mounting base.

[0013] Furthermore, it also includes:

[0014] The front connector is connected to the front end of the planetary screw;

[0015] The rear connector is connected to the rear cover.

[0016] Furthermore, both the front and rear connectors are equipped with spherical bearings.

[0017] Furthermore, it also includes a pressure sensor connected between the rear cover and the rear connector.

[0018] Furthermore, it also includes:

[0019] Two angular contact bearings are disposed between the housing and the planetary nut, and are only abutting each other;

[0020] The bearing clamp plate secures two angular contact bearings between the housing and the planetary nut.

[0021] Furthermore, it also includes a deep groove ball bearing, which is disposed between the planetary nut and the rear cover.

[0022] Furthermore, it also includes:

[0023] The optical axis nut is located between the front cover and the planetary screw.

[0024] The gland secures the optical axis nut between the front cover and the planetary screw.

[0025] A telescopic electric cylinder according to an embodiment of this utility model has a simple, intuitive, compact, and orderly internal structure, which greatly facilitates the user's disassembly and maintenance operations. This electric cylinder is small and compact, occupying very limited space, making it ideal for use in confined or space-constrained environments. Its optimized design ensures structural simplification and efficiency without sacrificing functionality and stability, providing users with a convenient and practical solution.

[0026] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of a telescopic electric cylinder according to an embodiment of the present utility model.

[0028] Figure 2 This is a front sectional view of a telescopic electric cylinder according to an embodiment of the present utility model. Detailed Implementation

[0029] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0030] First, combine Figures 1-2 This invention describes a telescopic electric cylinder according to an embodiment of the present invention, which is used to provide the driving force for telescopic extension and retraction and has a wide range of applications.

[0031] like Figures 1-2 As shown, a telescopic electric cylinder according to an embodiment of the present invention includes a housing 100, a rear cover 200, a front cover 300, a frameless motor, a planetary nut 500, a planetary screw 600, a mounting base 701, and an encoder 702.

[0032] Specifically, such as Figures 1-2 As shown, the housing 100 has openings on both the front and rear sides; the rear cover 200 is located at the rear opening of the housing 100; and the front cover 300 is located at the front opening of the housing 100.

[0033] Specifically, such as Figure 2 As shown, the frameless motor is located inside the housing 100. The stator 401 of the frameless motor is connected to the inner wall of the housing 100. The frameless motor has a compact structure, occupies little space, and is lightweight, thus reducing the overall weight.

[0034] Specifically, such as Figure 2 As shown, the planetary nut 500 is located inside the housing 100 and is connected to the rotor 402 of the frameless motor. It rotates along with the rotor 402 of the frameless motor to transmit power.

[0035] Specifically, such as Figure 2 As shown, the rear end of the planetary screw 600 engages with the planetary nut 500, and the front end of the planetary screw 600 extends through the front cover 300 to the outside. The planetary screw 600 moves linearly under the action of the planetary nut 500.

[0036] Specifically, such as Figure 2 As shown, the mounting base 701 is connected to the rear end of the planetary nut 500, and the encoder 702 is connected to the mounting base 701. The encoder 702 is used to drive the rotation of the planetary nut 500 by the frameless motor.

[0037] Furthermore, such as Figure 2 As shown, a telescopic electric cylinder according to an embodiment of the present invention further includes: a front connector 801 and a rear connector 802. The front connector 801 is connected to the front end of the planetary screw 600; the rear connector 802 is connected to the rear cover 200. The front connector 801 and the rear connector 802 are used for connecting to external equipment.

[0038] Furthermore, such as Figure 2 As shown, both the front connector 801 and the rear connector 802 are equipped with fisheye bearings 803, which have high load-bearing capacity and wear resistance.

[0039] Furthermore, such as Figure 2As shown, a telescopic electric cylinder according to an embodiment of the present invention further includes: a pressure sensor 804, which is connected between the rear cover 200 and the rear connector 802, for detecting the pressure experienced by the electric cylinder during operation, and thereby adjusting the operating state of the electric cylinder.

[0040] Furthermore, such as Figure 2 As shown, a telescopic electric cylinder according to an embodiment of the present invention further includes: two angular contact bearings 805 and a bearing pressure plate 806. The two angular contact bearings 805 are both disposed between the housing 100 and the planetary nut 500, and are close to each other, reducing friction and having a large load-bearing capacity; the bearing pressure plate 806 fixes the two angular contact bearings 805 between the housing 100 and the planetary nut 500.

[0041] Furthermore, such as Figure 2 As shown, a telescopic electric cylinder according to an embodiment of the present invention further includes a deep groove ball bearing 807, which is disposed between the planetary nut 500 and the rear cover 200 to reduce friction and wear.

[0042] Furthermore, such as Figure 2 As shown, a telescopic electric cylinder according to an embodiment of the present invention further includes: an optical axis nut 808 and a pressure cap 809. The optical axis nut 808 is disposed between the front cover 300 and the planetary screw 600, and is used to support and guide the planetary screw 600 to ensure the movement state of the planetary screw 600; the pressure cap 809 fixes the optical axis nut 808 between the front cover 300 and the planetary screw 600.

[0043] Working principle:

[0044] The stator 401 of the frameless motor drives the rotor 402 to rotate, which in turn drives the planetary nut 500 to rotate. Under the action of the planetary nut 500, the planetary screw 600 moves linearly.

[0045] Above, refer to Figures 1-2 This invention describes a telescopic electric cylinder according to an embodiment of the present invention. Its overall internal structure is not only simple, intuitive, compact, and orderly, but also greatly facilitates disassembly and maintenance for users. The electric cylinder is small and compact, occupying very limited space, making it ideal for use in confined or space-constrained environments. Its optimized design ensures structural simplification and efficiency without sacrificing functionality and stability, providing users with a convenient and practical solution.

[0046] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A telescopic electric cylinder, characterized in that, Include: The housing has openings on both its front and rear sides; A rear cover, wherein the rear cover is disposed at the rear opening of the housing; A front cover, wherein the front cover is disposed at the front opening of the housing; A frameless motor, wherein the frameless motor is disposed inside the housing, and the stator of the frameless motor is connected to the inner wall of the housing; Planetary nut, which is disposed inside the housing and connected to the rotor of the frameless motor; A planetary screw, the rear end of which engages with the planetary nut, and the front end of which extends through the front cover to the outside; Mounting base, the mounting base being connected to the rear end of the planetary nut; An encoder, which is connected to the mounting base.

2. The telescopic electric cylinder as described in claim 1, characterized in that, Also includes: A front connector, which is connected to the front end of the planetary screw; The rear connector is connected to the rear cover.

3. The telescopic electric cylinder as described in claim 2, characterized in that, Both the front connector and the rear connector are equipped with fisheye bearings.

4. The telescopic electric cylinder as described in claim 2, characterized in that, It also includes a pressure sensor connected between the rear cover and the rear connector.

5. The telescopic electric cylinder as described in claim 1, characterized in that, Also includes: Two angular contact bearings are disposed between the housing and the planetary nut, and are only abutting against each other; A bearing pressure plate secures the two angular contact bearings between the housing and the planetary nut.

6. The telescopic electric cylinder as described in claim 1, characterized in that, It also includes a deep groove ball bearing disposed between the planetary nut and the rear cover.

7. The telescopic electric cylinder as described in claim 1, characterized in that, Also includes: An optical axis nut, wherein the optical axis nut is disposed between the front cover and the planetary screw; A pressure cap secures the optical axis nut between the front cover and the planetary screw.

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