Precise transmission electric push rod structure

Abstract

The utility model discloses a precision transmission electric push rod structure, which is characterized in that a driving motor, a transmission assembly and a telescopic assembly are all mounted on a supporting seat, and the driving motor and a transmission screw rod are vertically matched; the outer sleeve is located at the lower end of the supporting seat, the threaded section of the transmission lead screw extends into the outer sleeve, and the sliding nut is embedded in the threaded section of the transmission lead screw. The telescopic inner pipe is arranged in the outer sleeve and matched with the transmission lead screw through the sliding nut. A driving motor and a transmission screw rod structure which are vertically matched with each other are matched with a transmission worm and a transmission helical tooth transmission assembly, so that the linear reciprocating motion of the telescopic inner pipe on the outer sleeve is realized; the whole push rod is simpler in structure, the components are arranged more compactly and reasonably, the transmission work precision is higher, and market requirements are better met.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric push rods and relates to a precision transmission electric push rod structure. Background Art

[0002] At present, electric linear actuators are a widely used driving technology, for example, in automation equipment, automatic lifting platforms, massage chairs and other products; however, the electric linear actuator structure in the existing technology has a large overall size, a bulky appearance, a complicated structure, a large volume, and a high maintenance cost. Utility Model Content

[0003] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0004] A precision transmission electric push rod structure, comprising: a drive motor, a transmission assembly, a support seat, a transmission screw, a sliding nut, a telescopic inner tube and an outer sleeve;

[0005] The drive motor, transmission assembly and telescopic assembly are all installed on the support base. The drive motor and the transmission screw are arranged vertically, and the transmission assembly realizes the transmission coordination between the drive motor and the transmission screw.

[0006] The outer sleeve is located at the lower end of the support seat, and the threaded section of the transmission screw extends into the outer sleeve. The sliding nut is nested on the threaded section of the transmission screw, and the outer sleeve is used to realize the rotation limit of the sliding nut.

[0007] The telescopic inner tube is arranged in the outer sleeve, and the telescopic inner tube is matched with the transmission screw through a sliding nut;

[0008] The transmission assembly includes: a transmission worm mounted on the output shaft of the drive motor and a transmission bevel gear nested on the transmission screw. The transmission worm and the transmission bevel gear realize the transmission coordination between the drive motor and the transmission screw.

[0009] As a further solution of the present invention: a group of outwardly extending detection brackets are provided on the sliding nut; and a group of travel switches are respectively provided at the upper and lower ends of the inner wall of the outer sleeve, and the travel switches are located at the end positions of the outer sleeve.

[0010] As a further solution of the present invention: a plurality of support bearings are nested and installed on the transmission screw, and the transmission screw is fixed in the support seat through the support bearings.

[0011] The beneficial effects of the utility model are as follows: through the vertically coordinated arrangement of the drive motor and the transmission screw structure, in conjunction with the transmission worm and the transmission helical gear transmission assembly, the linear reciprocating motion of the telescopic inner tube on the outer sleeve is realized; at the same time, the overall push rod structure is simpler, the arrangement between the components is more compact and reasonable, the transmission working accuracy is higher, and it is more in line with market demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic structural diagram of the utility model.

[0013] Figure 2 This is another structural diagram of the utility model. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. It should be understood that this application is not limited to the example embodiments disclosed herein. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0015] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do 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 therefore cannot be understood as a limitation on the present invention.

[0016] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0017] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0018] See also Figures 1-2In the embodiment of the present utility model, a precision transmission electric push rod structure includes: a driving motor 5, a transmission assembly 4, a support base 1, a transmission screw 7, a sliding nut 8, a telescopic inner tube 9 and an outer sleeve 2;

[0019] The drive motor 5, the transmission assembly 4 and the telescopic assembly are all installed on the support base 1. The drive motor 5 and the transmission screw 7 are arranged vertically, and the transmission assembly 4 realizes the transmission cooperation between the drive motor 5 and the transmission screw 7. The vertically arranged motor structure can make the overall structure more compact, effectively reduce the overall structural volume, and make the electric push rod appearance design more concise, intuitive and generous.

[0020] The outer sleeve 2 is located at the lower end of the support base 1, and the threaded section of the transmission screw 7 extends into the outer sleeve 2. The sliding nut 8 is nested on the threaded section of the transmission screw 7, and the outer sleeve 2 is used to realize the rotation limit of the sliding nut 8;

[0021] The telescopic inner tube 9 is arranged in the outer sleeve 2, and the telescopic inner tube 9 is matched with the transmission screw 7 through the sliding nut 8. During operation, the driving power of the drive motor 5 is transmitted to the transmission screw 7 through the transmission assembly 4. The telescopic inner tube 9 is extended and retracted by the rotation of the transmission screw 7. The end of the telescopic inner tube 9 is connected to the driven device structure.

[0022] The transmission assembly 4 includes a transmission worm 41 mounted on the output shaft of the drive motor 5 and a transmission bevel gear 42 nested on the transmission screw 7 . The transmission worm 41 and the transmission bevel gear 42 realize the transmission cooperation between the drive motor 5 and the transmission screw 7 .

[0023] Furthermore, a group of outwardly extending detection brackets 11 are provided on the sliding nut 8; and a group of travel switches 10 are respectively provided at the upper and lower ends of the inner wall of the outer sleeve 2. The travel switch 10 is located at the end position of the outer sleeve 2. In the process of the sliding nut 8 driving the telescopic inner tube 9 to perform linear reciprocating telescopic work, when the detection bracket 11 moves to the detection range of the travel switch 10, it means that the telescopic inner tube 9 has reached the maximum working stroke. The travel switch 10 will send a working signal to the drive motor 5 to control the drive motor 5 to stop or reverse the output.

[0024] Furthermore, a plurality of support bearings 6 are nested and installed on the transmission screw 7, and the transmission screw 7 is fixed in the support seat 1 through the support bearings 6, and a supporting force is provided thereto, which can effectively improve the overall stability of the reciprocating operation.

[0025] It should also be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0026] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A precision transmission electric push rod structure, characterized in that: include: Drive motor, transmission assembly, support base, transmission screw, sliding nut, telescopic inner tube and outer tube; The drive motor, transmission assembly and telescopic assembly are all installed on the support base. The drive motor and the transmission screw are arranged vertically, and the transmission assembly realizes the transmission coordination between the drive motor and the transmission screw. The outer sleeve is located at the lower end of the support seat, and the threaded section of the transmission screw extends into the outer sleeve. The sliding nut is nested on the threaded section of the transmission screw, and the outer sleeve is used to realize the rotation limit of the sliding nut. The telescopic inner tube is arranged in the outer sleeve, and the telescopic inner tube is matched with the transmission screw through a sliding nut; The transmission assembly includes: a transmission worm mounted on the output shaft of the drive motor and a transmission bevel gear nested on the transmission screw. The transmission worm and the transmission bevel gear realize the transmission coordination between the drive motor and the transmission screw.

2. A precision transmission electric push rod structure according to claim 1, characterized in that: A group of detection brackets extending outward are provided on the sliding nut; and a group of travel switches are respectively provided at the upper and lower ends of the inner wall of the outer sleeve, and the travel switches are located at the end positions of the outer sleeve.

3. The precision transmission electric push rod structure according to claim 1, characterized in that: A plurality of support bearings are nested and installed on the transmission screw, and the transmission screw is fixed in the support seat through the support bearings.

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