Round-tube-shaped electric push rod convenient to install

Abstract

The utility model provides a circular-tube-shaped electric push rod convenient to install, and relates to the technical field of electric push rod structures. Comprising a circular-tube-shaped shell, a driving assembly and a telescopic assembly, and the driving assembly is arranged in the circular-tube-shaped shell and used for driving the telescopic assembly to do telescopic motion in the central axis direction of the circular-tube-shaped shell; the outer side of the circular-tube-shaped shell is provided with an external thread so that the electric push rod can be conveniently installed in the screw hole of the corresponding installation platform in a threaded connection mode. According to the scheme, the electric push rod can be more conveniently installed and is suitable for being used in a narrow space.

Description

Technical Field

[0001] The utility model relates to the technical field of electric push rod structures, in particular to a round tubular electric push rod which is easy to install. Background Art

[0002] At present, electric linear actuators are low-energy, pollution-free, and low-noise linear actuators, which are widely used in medical equipment, furniture and sofas, industrial instruments, home decoration and other fields. When installing a cylindrical electric linear actuator, the electric linear actuator is usually fixed by the tail pull on the reduction box, and the transmission connection hole at the front end of the guide tube of the electric linear actuator is connected to the linear motion mechanism of the device to play a driving role. However, this installation method is difficult to use in some applications with small installation space, because the reduction box will occupy a large installation space, resulting in the electric linear actuator being unable to meet the installation requirements in a small space. Utility Model Content

[0003] The utility model discloses a circular tubular electric push rod which is easy to install, and aims to improve the problem that the existing electric push rod is inconvenient to install and occupies a large installation space.

[0004] The utility model adopts the following scheme:

[0005] A cylindrical electric push rod that is easy to install includes a cylindrical shell, a drive assembly and a telescopic assembly. The drive assembly is arranged in the cylindrical shell to drive the telescopic assembly to perform telescopic movement along the central axis direction of the cylindrical shell; an external thread is arranged on the outer side of the cylindrical shell to facilitate the electric push rod to be installed in the screw hole of the corresponding installation platform by means of a threaded connection.

[0006] Furthermore, the circular tubular shell includes a tube body, the tube body is provided with the external thread, and a wrench position is provided on the tube body so that the tube body can be driven to rotate by a wrench, so as to facilitate disassembly and assembly in the screw hole of the corresponding installation platform.

[0007] Furthermore, the circular tubular shell includes a tube body and a push rod front end guide sleeve connected to the tube body, the push rod front end guide sleeve is installed at the front end of the tube body, and the external thread is provided on the outside of the push rod front end guide sleeve to facilitate the electric push rod to be installed in the screw hole of the corresponding mounting platform by threaded connection.

[0008] Furthermore, the tube body includes a push rod front sleeve and a push rod rear sleeve, the drive assembly includes a reduction motor, a coupling and a bearing, the reduction motor is arranged in the push rod rear sleeve, the coupling connects the reduction motor and the telescopic assembly, the bearing is arranged at the end of the coupling away from the reduction motor, one end of the push rod front sleeve is sleeved on the push rod rear sleeve, and limits the axial movement of the bearing.

[0009] Furthermore, a motor sleeve and a bearing sleeve are arranged in the tube body, and the driving assembly includes a reduction motor, a coupling and a bearing, the reduction motor is arranged in the motor sleeve, the coupling connects the reduction motor and the telescopic assembly, the bearing is arranged in the bearing sleeve, one end of the bearing sleeve is sleeved on the motor sleeve, and limits the axial movement of the bearing.

[0010] Furthermore, the driving component is connected to a current detection module to cut off the current when the driving current rises to a preset value.

[0011] Furthermore, the telescopic assembly includes a screw-nut transmission structure formed by the cooperation of a transmission screw and a nut, so as to convert the rotational motion of the driving assembly into the axial linear motion of the transmission screw.

[0012] Beneficial effects:

[0013] This solution provides an external thread on the outside of the tube body of the circular tubular electric push rod, so that during installation, the electric push rod can be directly fixed to the corresponding mounting platform by means of a threaded connection. It is only necessary to provide a corresponding threaded hole on the mounting platform. This design solution allows the entire electric push rod to be installed in contact with the mounting plane, reducing the width range required for the installation of the entire electric push rod. On the one hand, it is convenient for fixation, and on the other hand, it can also reduce the space required for installation, thereby improving the adaptability of the electric push rod in a narrow space. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of a cylindrical electric push rod that is easy to install in the first embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the exploded structure of a cylindrical electric push rod that is easy to install in the first embodiment of the utility model;

[0016] Figure 3 It is a schematic cross-sectional structure diagram of a circular tubular electric push rod that is easy to install in the first embodiment of the utility model;

[0017] Figure 4 This is a schematic structural diagram of a cylindrical electric push rod that is easy to install in the second embodiment of the utility model;

[0018] Figure 5 This is a schematic diagram of the exploded structure of a cylindrical electric push rod that is easy to install in the second embodiment of the utility model;

[0019] Figure 6 This is a schematic cross-sectional structure diagram of a circular tubular electric push rod that is easy to install in the second embodiment of the utility model;

[0020] Icons: tube body 1, push rod front sleeve 11, push rod rear sleeve 12, push rod front end guide sleeve 13, external thread 14, wrench position 15, limit part 16, drive assembly 2, reduction motor 21, coupling 22, bearing 23, telescopic assembly 3, transmission screw 31, screw nut 32, telescopic rod 33. DETAILED DESCRIPTION

[0021] Example 1

[0022] Combination Figures 1 to 3 As shown, this embodiment provides a cylindrical electric push rod that is easy to install, including a cylindrical shell, a drive component 2 and a telescopic component 3. The drive component 2 is arranged in the cylindrical shell to drive the telescopic component 3 to perform telescopic movement along the central axis direction of the cylindrical shell; an external thread 14 is provided on the outer side of the cylindrical shell to facilitate the electric push rod to be installed in the screw hole of the corresponding installation platform by means of a threaded connection.

[0023] Combination Figure 1 and Figure 3As shown, in this embodiment, the circular tubular housing includes a tube body 1, the tube body 1 is provided with the external thread 14, and the tube body 1 is provided with a wrench position 15 so that the tube body 1 can be driven to rotate by a wrench, so as to be disassembled and assembled in the screw hole of the corresponding mounting platform. The tube body 1 is a circular tube as a whole, and can be made of metal. The circular tube structure is simple in processing technology, which can reduce the manufacturing cost of the metal shell. Specifically, the tube body 1 includes a push rod front sleeve 11 and a push rod rear sleeve 12, and the drive assembly 2 includes a reduction motor 21, a coupling 22 and a bearing 23. The reduction motor 21 is arranged in the push rod rear sleeve 12, and the coupling 22 connects the reduction motor 21 and the telescopic assembly 3. The bearing 23 is arranged at one end of the coupling 22 away from the reduction motor 21, and one end of the push rod front sleeve 11 is sleeved on the push rod rear sleeve 12, and the axial movement of the bearing 23 is limited. Here, one end of the push rod front sleeve 11 is provided with an internal thread, and one end of the push rod rear sleeve 12 is provided with an external thread matching the internal thread, so that the push rod rear sleeve 12 and the push rod front sleeve 11 can be quickly assembled by threaded connection, and the bearing 23 is clamped by the clamping structure provided in the push rod front sleeve 11 and the end of the push rod rear sleeve 12, so that the motor is not affected by the load in the axial direction, and the scientific and reasonable structural scheme enables the structure to withstand greater tension and pressure. The wrench position 15 is synchronously provided with the external thread 14 on the tube body 1 on the push rod front sleeve 11 or the push rod rear sleeve 12, so that when the wrench is rotated, it directly acts on the push rod front sleeve 11 or the push rod rear sleeve 12 connected to the mounting platform, and will not cause the connection part of the push rod front sleeve 11 and the push rod rear sleeve 12 to loosen. In one embodiment, a limit portion 16 is provided at the end of the external thread 14 part to limit the installation depth of the electric push rod.

[0024] The drive assembly 2 is connected to a current detection module to cut off the current when the drive current rises to a preset value. In this embodiment, the reduction motor 21 is directly connected to the coupling 22, so that the overall structure is more concise and compact, the volume of the electric push rod can be reduced, and it is conducive to miniaturization design. In addition, the current detection module is an existing technology, which can detect the current change of the reduction motor 21 in the drive assembly 2. When the electric push rod is pushed to the end or the bottom, the reduction motor 21 is blocked, causing the current to rise. When the cut-off current preset by the control system is reached, the current of the circuit will be cut off to achieve an automatic protection function.

[0025] The telescopic assembly 3 includes a transmission structure of a screw nut 32 formed by the cooperation of a transmission screw 31 and a nut, so as to convert the rotational motion of the driving assembly 2 into the axial linear motion of the transmission screw 31. Here, the transmission screw 31 is connected to the coupling 22, and the screw nut 32 can move linearly along the central axis of the tube body 1 when the transmission screw 31 rotates, so as to control the telescopic rod 33 connected to the screw nut 32 to move up and down along the transmission screw 31 to achieve the telescopic effect. An anti-rotation sleeve is also provided in the tube body 1 to limit the rotation of the screw nut 32 while lifting and lowering, so as to ensure the stability of the electric push rod.

[0026] Example 2

[0027] Combination Figures 4 to 6 As shown, in another embodiment, the cylindrical shell includes a tube body 1 and a push rod front end guide sleeve 13 connected to the tube body 1, the push rod front end guide sleeve 13 is installed at the front end of the tube body 1, and the outer side of the push rod front end guide sleeve 13 is provided with the external thread 14 so as to facilitate the electric push rod to be installed in the screw hole of the corresponding mounting platform by threaded connection. A motor sleeve and a bearing 23 sleeve are provided in the tube body 1, and the drive assembly 2 also includes a reduction motor 21, a coupling 22 and a bearing 23, the reduction motor 21 is provided in the motor sleeve, the coupling 22 connects the reduction motor 21 and the telescopic assembly 3, the bearing 23 is provided in the bearing 23 sleeve, one end of the bearing 23 sleeve is sleeved on the motor sleeve, and the axial movement of the bearing 23 is limited. In this embodiment, by providing the external thread 14 on the push rod front end guide sleeve 13, the installation position of the electric push rod can be transferred to the front end. Preferably, the push rod front end guide sleeve 13 is detachably mounted on the tube body 1, so that after the external thread 14 fails, the push rod front end guide sleeve 13 can be directly replaced, so that it can continue to be used to increase the service life. In a preferred embodiment, the push rod front end guide sleeve 13 is made of metal material, and the metal external thread 14 has higher strength, which can increase the service life of the product and withstand greater torque.

[0028] It should be noted that the mounting platform in the above embodiment refers to the mounting position of the electric push rod, and its position and shape are not limited. For example, it can be a panel with a threaded hole. The electric push rod can be directly inserted into the threaded hole so that the external thread 14 is screwed into the threaded hole for fixation.

[0029] The present embodiment adopts the design of the external thread 14 of the rod body, so that the product occupies a small space after installation, which is convenient for product production and solves the problem that the round tube structure is difficult to fix, so as to facilitate installation and subsequent maintenance and disassembly.

[0030] It should be understood that the above are only preferred implementations of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions under the concept of the present utility model belong to the protection scope of the present utility model.

[0031] The above description of the drawings used in the implementation manner only shows certain embodiments of the utility model and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

Claims

1. A cylindrical electric push rod that is easy to install, comprising a cylindrical shell, a driving assembly and a telescopic assembly, wherein the driving assembly is arranged in the cylindrical shell to drive the telescopic assembly to perform telescopic movement along the central axis direction of the cylindrical shell; characterized in that: The outer side of the cylindrical shell is provided with an external thread so as to facilitate the electric push rod to be installed in the screw hole of the corresponding installation platform by means of threaded connection.

2. The easy-to-install cylindrical electric linear actuator according to claim 1, characterized in that: The circular tubular shell comprises a tube body, the tube body is provided with the external thread, and a wrench position is provided on the tube body so as to drive the tube body to rotate by a wrench, so as to facilitate disassembly and assembly in the screw hole of the corresponding installation platform.

3. The easy-to-install cylindrical electric push rod according to claim 1 or 2, characterized in that: The cylindrical shell includes a tube body and a push rod front end guide sleeve connected to the tube body. The push rod front end guide sleeve is installed at the front end of the tube body, and the external thread is provided on the outer side of the push rod front end guide sleeve to facilitate the electric push rod to be installed in the screw hole of the corresponding mounting platform by threaded connection.

4. The easy-to-install cylindrical electric linear actuator according to claim 2, characterized in that: The tube body includes a front sleeve and a rear sleeve of the push rod, and the driving assembly includes a reduction motor, a coupling and a bearing. The reduction motor is arranged in the rear sleeve of the push rod, and the coupling connects the reduction motor and the telescopic assembly. The bearing is arranged at the end of the coupling away from the reduction motor. One end of the front sleeve of the push rod is sleeved on the rear sleeve of the push rod and limits the axial movement of the bearing.

5. The easy-to-install cylindrical electric linear actuator according to claim 3, characterized in that: A motor sleeve and a bearing sleeve are arranged in the tube body, and the driving assembly includes a reduction motor, a coupling and a bearing. The reduction motor is arranged in the motor sleeve, the coupling connects the reduction motor and the telescopic assembly, the bearing is arranged in the bearing sleeve, and one end of the bearing sleeve is sleeved on the motor sleeve to limit the axial movement of the bearing.

6. The easy-to-install cylindrical electric linear actuator according to claim 1, characterized in that: The driving component is connected to a current detection module to cut off the current when the driving current rises to a preset value.

7. The easy-to-install cylindrical electric linear actuator according to claim 1, characterized in that: The telescopic assembly includes a screw-nut transmission structure formed by the cooperation of a transmission screw and a nut, so as to convert the rotational motion of the driving assembly into the axial linear motion of the transmission screw.

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