Ultra-miniature electric cylinder

Abstract

The utility model belongs to the technical field of electric cylinders, and particularly relates to an ultra-miniature electric cylinder, which comprises a driving motor, an electric cylinder and an electric cylinder, the moving assembly comprises a guide piece meshed with the lead screw; the cylinder body is connected with the driving motor, and a guide part is arranged in the cylinder body; wherein the guide piece is in sliding connection with the inner wall of the cylinder body and the guide part; the guide part is suitable for limiting the rotation of the guide piece; the lead screw is suitable for driving the guide part to stretch out of the cylinder body during rotation or driving the guide part to retract into the cylinder body during reverse rotation of the lead screw, rotation of the lead screw is directly output through the driving motor so as to drive the guide part to stretch out or retract back, and rotary motion is directly converted into linear motion. Therefore, the effects of simple structure, small size, high efficiency and precision guarantee are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric cylinders, and in particular relates to an ultra-micro electric cylinder. Background Art

[0002] Electric cylinders are products designed for continuous motion, low to high loads (usually high speeds), and can be cycled many times during their service life. They are commonly used in many important fields such as industry and agriculture.

[0003] Existing electric cylinders usually use servo motors and are connected through couplings, synchronous belts and other parts. This setting makes the electric cylinders low in precision and large in size, requiring more installation space.

[0004] Therefore, in order to solve the above problems, it is necessary to design an ultra-micro electric cylinder. Utility Model Content

[0005] The utility model aims to provide an ultra-micro electric cylinder to solve the technical problems of large volume and low precision of the existing electric cylinders.

[0006] In order to solve the above technical problems, the utility model provides an ultra-micro electric cylinder, comprising:

[0007] A driving motor, comprising: a lead screw;

[0008] A moving assembly, comprising: a guide member engaged with the lead screw;

[0009] The cylinder body connected to the driving motor has a guide portion inside;

[0010] The guide member is slidably connected to the inner wall of the cylinder body and the guide portion; and

[0011] The guide portion is suitable for limiting the rotation of the guide member;

[0012] The screw is suitable for driving the guide member to extend out of the cylinder body when rotating or driving the guide member to retract into the cylinder body when the screw is reversed.

[0013] Furthermore, the moving assembly further comprises: a sliding sleeve connected to one end of the guide member, and a limiting member slidably connected to the guide portion; wherein

[0014] The sliding sleeve is connected to the limiting member.

[0015] Furthermore, the sliding sleeve is provided with a mounting position; wherein

[0016] The limiting member is arranged in the installation position.

[0017] Furthermore, the moving assembly further comprises: a nut member connected to the other end of the sliding sleeve;

[0018] The nut member is engaged with the screw rod.

[0019] Furthermore, an annular recess is provided on the sliding sleeve;

[0020] The inner hoop of the annular recess is provided with an open slip ring; wherein

[0021] The open slip ring is slidably connected to the inner wall of the cylinder body.

[0022] Furthermore, the two ends of the cylinder body are connected to a front cover and a rear cover respectively;

[0023] The rear cover is connected to the driving motor.

[0024] Furthermore, a kit is provided in the middle of the front cover;

[0025] The sleeve is slidably connected to the guide member.

[0026] Furthermore, a sealing ring is provided on the outer side of the guide member;

[0027] The sealing ring is located between the front cover and the sleeve.

[0028] Furthermore, the other end of the guide member is connected with an adapter.

[0029] Furthermore, at least two placement portions are provided on the sliding sleeve;

[0030] A magnetic steel is arranged in the placement portion;

[0031] The outer surface of the cylinder body is provided with at least two fixing positions;

[0032] A photoelectric switch is provided in the fixing position;

[0033] The magnetic steel is magnetically coupled to the photoelectric switch;

[0034] The photoelectric switch is electrically connected to the drive motor;

[0035] Any of the magnetic steels is suitable for being magnetically coupled with the corresponding photoelectric switch after being moved to a limit position;

[0036] After the photoelectric switch obtains the coupling signal, it controls the driving motor to stop working; and

[0037] The other magnetic steel is adapted to be magnetically coupled with the corresponding photoelectric switch after being moved to the limit position;

[0038] After the photoelectric switch obtains the coupling signal, the drive motor is controlled to stop working.

[0039] The beneficial effects of the utility model are:

[0040] (I) The utility model drives the screw to rotate by driving the motor, and the screw is meshed with the nut to drive the nut, the sleeve, the guide and the limiter on the sleeve, and the open slip ring to move. The guide part and the limiter of the cylinder body limit the sleeve to rotate with the screw, the guide part slides in the kit, the open slip ring slides in the cylinder body, and the limiter slides in the guide part to extend out of the cylinder body, and vice versa. Through the above steps, the rotary motion is converted into linear motion, which is efficient while ensuring the operation accuracy and has a simple structure, small size, and more flexible installation position.

[0041] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0042] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 It is a cross-sectional view of a partial preferred embodiment of the utility model;

[0045] Figure 2 The utility model is an explosion Figure 1 ;

[0046] Figure 3 The utility model is an explosion Figure 2 ;

[0047] Figure 4 It is a stereogram of an overall preferred embodiment of the utility model.

[0048] In the figure:

[0049] Driving motor 1, screw rod 101;

[0050] Moving assembly 2, guide member 201, sleeve 202, mounting position 2021, annular recess 2022, placement portion 2023, position limiting member 203, nut member 204;

[0051] Cylinder body 3, guide portion 301, fixing position 302;

[0052] Open slip ring 4, front cover 5, rear cover 6, kit 7, sealing ring 8, adapter 9, magnetic steel 10, photoelectric switch 11. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example 1

[0054] like Figures 1 to 4 As shown, this embodiment provides an ultra-micro electric cylinder, comprising:

[0055] A driving motor 1 comprises: a screw 101; a moving assembly 2 comprises: a guide member 201 meshed with the screw 101; a cylinder body 3 connected to the driving motor 1, and provided with a guide portion 301 inside thereof; wherein the guide member 201 is slidably connected with the inner wall of the cylinder body 3 and the guide portion 301; and the guide portion 301 is suitable for limiting the rotation of the guide member 201; the screw 101 is suitable for driving the guide member 201 to extend out of the cylinder body 3 when rotating or to drive the guide member 201 to retract into the cylinder body 3 when the screw 101 is reversed; wherein the screw 101 is directly driven by the driving motor 1, reducing the step of the rotating shaft driving the screw 101 to rotate in the traditional motor.

[0056] The moving component 2 also includes: a sleeve 202 connected to one end of the guide member 201, and a limit member 203 slidably connected to the guide part 301; wherein the sleeve 202 is connected to the limit member 203; wherein the sleeve 202 and the guide member 201 are connected by bolts but not limited to bolts; wherein the limit member 203 and the sleeve 202 are connected by bolts but not limited to bolts; wherein the limit member 203, the sleeve 202 and the guide member 201 share a bolt.

[0057] The sliding sleeve 202 is provided with a mounting position 2021 ; wherein the limiting member 203 is arranged in the mounting position 2021 ; wherein by setting the mounting position 2021 , the limiting member 203 is limited in position.

[0058] The moving assembly 2 further includes: a nut member 204 connected to the other end of the sleeve 202; wherein the nut member 204 is engaged with the screw rod 101; wherein the sleeve 202 and the nut member 204 are connected by, but not limited to, bolts.

[0059] An annular recess 2022 is provided on the sleeve 202; an open slip ring 4 is provided inside the annular recess 2022; the open slip ring 4 is slidably connected to the inner wall of the cylinder body 3; it is most preferred that the open slip ring 4 is made of wear-resistant material; by providing the annular recess 2022, the effect of limiting the open slip ring 4 is achieved.

[0060] The two ends of the cylinder body 3 are respectively connected with a front cover 5 and a rear cover 6; wherein the rear cover 6 is connected to the driving motor 1; wherein the cylinder body 3 and the front cover 5 and the rear cover 6 are connected by but not limited to bolts or integrally formed.

[0061] A sleeve 7 is provided in the middle of the front cover 5; wherein the sleeve 7 is slidably connected with the guide member 201; wherein the sleeve 7 adopts but is not limited to a graphite bearing or a graphite copper sleeve.

[0062] The outer side of the guide member 201 is sleeved with a sealing ring 8; wherein the sealing ring 8 is located between the front cover member 5 and the sleeve 7; wherein by providing the sealing ring 8, a sealing and dustproof effect is achieved.

[0063] The other end of the guide member 201 is connected to an adapter 9 .

[0064] At least two placement parts 2023 are opened on the sliding sleeve 202; wherein the placement part 2023 is provided with a magnetic steel 10; the outer surface of the cylinder body 3 is provided with at least two fixing positions 302; wherein the fixing position 302 is provided with a photoelectric switch 11; the magnetic steel 10 is magnetically coupled with the photoelectric switch 11; the photoelectric switch 11 is electrically connected to the drive motor 1; any one of the magnetic steels 10 is suitable for moving to the limit position and then magnetically coupling with the corresponding photoelectric switch 11; after the photoelectric switch 11 obtains the coupling signal, the drive motor 1 is controlled to stop working; and another one of the magnetic steels 10 is suitable for moving to the limit position and then magnetically coupling with the corresponding photoelectric switch 11; after the photoelectric switch 11 obtains the coupling signal, the drive motor 1 is controlled to stop working.

[0065] In this embodiment, the driving motor 1 drives the screw rod 101 to rotate, and the screw rod 101 engages with the nut member 204 to drive the nut member 204, the sleeve 202, the guide member 201 and the limit member 203 and the open slip ring 4 on the sleeve 202 to move, and the guide portion 301 and the limit member 203 of the cylinder body 3 limit the sleeve 202 from rotating with the screw rod 101, the guide member 201 slides in the kit 7, the open slip ring 4 slides in the cylinder body 3, and the limit member 203 slides in the guide portion 301 to extend out of the cylinder body 3, and vice versa, retract into the cylinder body 3. Through the above steps, the rotational motion is converted into linear motion, which is efficient while ensuring the operation accuracy and has a simple structure, small size, and a more flexible installation position.

[0066] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0067] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0069] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0070] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0071] In addition, each functional unit in each embodiment of the present utility model may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0072] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An ultra-micro electric cylinder, characterized in that: include: A driving motor (1) comprising: a screw rod (101); A moving assembly (2) comprising: a guide member (201) engaged with the screw rod (101); A cylinder body (3) connected to a driving motor (1) has a guide portion (301) disposed therein; wherein The guide member (201) is slidably connected to the inner wall of the cylinder body (3) and the guide portion (301); and The guide portion (301) is suitable for limiting the rotation of the guide member (201); The screw rod (101) is suitable for driving the guide member (201) to extend out of the cylinder body (3) when rotating, or for driving the guide member (201) to retract into the cylinder body (3) when the screw rod (101) is reversed.

2. The ultra-micro electric cylinder according to claim 1, characterized in that: The moving assembly (2) further comprises: a sliding sleeve (202) connected to one end of the guide member (201), and a limiting member (203) slidably connected to the guide portion (301); wherein The sliding sleeve (202) is connected to the limiting member (203).

3. The ultra-micro electric cylinder according to claim 2, characterized in that: The sliding sleeve (202) is provided with a mounting position (221); wherein The limiting member (203) is arranged in the installation position (2021).

4. The ultra-micro electric cylinder according to claim 2, characterized in that: The moving assembly (2) further comprises: a nut member (204) connected to the other end of the sliding sleeve (202); The nut member (204) is meshed with the screw rod (101).

5. The ultra-micro electric cylinder according to claim 2, characterized in that: The sliding sleeve (202) is provided with an annular recess (2022); An open slip ring (4) is provided inside the annular recess (2022); wherein The open slip ring (4) is slidably connected to the inner wall of the cylinder body (3).

6. The ultra-micro electric cylinder according to claim 1, characterized in that: The two ends of the cylinder body (3) are respectively connected to a front cover (5) and a rear cover (6); wherein The rear cover (6) is connected to the drive motor (1).

7. The ultra-micro electric cylinder according to claim 6, characterized in that: A sleeve (7) is provided in the middle of the front cover (5); wherein The kit (7) is slidably connected to the guide member (201).

8. The ultra-micro electric cylinder according to claim 7, characterized in that: The outer side of the guide member (201) is sleeved with a sealing ring (8); wherein The sealing ring (8) is located between the front cover (5) and the sleeve (7).

9. The ultra-micro electric cylinder according to claim 2, characterized in that: The other end of the guide member (201) is connected to an adapter (9).

10. The ultra-micro electric cylinder according to claim 2, characterized in that: At least two placement portions (2023) are formed on the upper portion of the sliding sleeve (202); The placement portion (2023) is provided with a magnetic steel (10); The outer surface of the cylinder body (3) is provided with at least two fixing positions (302); wherein A photoelectric switch (11) is provided in the fixing position (302); The magnetic steel (10) is magnetically coupled to the photoelectric switch (11); The photoelectric switch (11) is electrically connected to the drive motor (1); Any of the magnetic steels (10) is suitable for being magnetically coupled with a corresponding photoelectric switch (11) after being moved to a limit position; After the photoelectric switch (11) obtains the coupling signal, it controls the drive motor (1) to stop working; and The other magnetic steel (10) is adapted to be magnetically coupled with the corresponding photoelectric switch (11) after being moved to a limit position; After the photoelectric switch (11) obtains the coupling signal, it controls the drive motor (1) to stop working.

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