Electric push rod

Abstract

The utility model discloses an electric push rod which comprises a shell and a transmission mechanism, the shell comprises a barrel shell, a fixed seat and a movable pipe, the transmission mechanism is fixedly installed on the fixed seat, the fixed seat and the movable pipe are connected through the transmission mechanism and are arranged in the barrel shell together, the movable pipe is movably connected in the barrel shell, and the fixed seat and the movable pipe are arranged in the barrel shell. The movable pipe is provided with a key, the transmission mechanism comprises a control panel, a movable support and a power assembly used for driving the movable support to do linear motion, the movable support is fixedly connected with the movable pipe, the key is electrically connected with the control panel through a wire, the control panel is installed on the fixed seat, and the movable pipe is fixedly connected with the control panel. And the controller is used for receiving a feedback signal of the key and controlling the power assembly to operate so as to drive the movable pipe to move in the axial direction of the barrel shell. A transmission mechanism with a compact space is adopted, the traditional manual adjustment of the length of the push rod is replaced, the use convenience of a user is improved, and the adjustment of the user is more convenient and simpler.

Description

Technical Field

[0001] The utility model relates to the technical field of push rods, in particular to an electric push rod. Background Art

[0002] With the continuous development of science and technology, people's needs for various tools and equipment are also changing. In the field of push rod mechanisms, users have higher and higher requirements for the convenience of adjustment methods and the compactness of mechanisms. For example, most push rod mechanisms used in large-screen display devices use manual adjustment methods. Manual adjustment methods require users to directly contact the equipment and cannot be remotely controlled. In addition, manual adjustment costs are high. Although a few mechanisms use electric adjustment methods, these mechanisms are large in size, occupy a lot of space, and are not compact enough. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides an electric push rod, which adopts a compact transmission mechanism to replace the traditional manual adjustment of the push rod length, improves user convenience, and makes user adjustment more convenient and simple.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] An electric push rod comprises a shell and a transmission mechanism, wherein the shell comprises a cylinder shell, a fixed seat and a movable tube, the transmission mechanism is fixedly mounted on the fixed seat, the fixed seat is connected to the movable tube through the transmission mechanism and is jointly arranged in the cylinder shell, the movable tube is movably connected in the cylinder shell, a button is arranged on the movable tube, the transmission mechanism comprises a control panel, a movable bracket and a power assembly for driving the movable bracket to perform linear motion, the movable bracket is fixedly connected to the movable tube, the button is electrically connected to the control panel via a wire, the control panel is mounted on the fixed seat, and is used to receive feedback signals from the button and control the operation of the power assembly to drive the movable tube to move along the axial direction of the cylinder shell.

[0006] As a further improvement of the above technical solution, the control panel signal is connected to a control terminal, and the control terminal is used to remotely control the power component.

[0007] As a further improvement of the above technical solution, the power assembly includes a drive motor, a screw rod and a nut. The drive motor is fixedly installed in the fixed seat, one end of the screw rod is connected to the output end of the drive motor, and the nut is fixedly connected to the movable bracket.

[0008] As a further improvement of the above technical solution, a rolling bearing is fixedly arranged on the fixing seat, and the screw rod is fixedly mounted on the fixing seat via the rolling bearing.

[0009] As a further improvement of the above technical solution, the drive motor is connected to the screw rod through a coupling.

[0010] As a further improvement of the above technical solution, a travel limit switch plate is provided at one end of the fixing seat close to the movable bracket, and the travel limit switch plate is used to detect the position of the movable bracket.

[0011] As a further improvement of the above technical solution, a wire clamp and a fixing piece are provided on one side of the movable bracket, and both the fixing piece and the wire clamp are used to fix the wire.

[0012] As a further improvement of the above technical solution, a slide groove is arranged inside the cylinder shell, rollers are arranged on both sides of the movable bracket, and the rollers are rollingly arranged on the slide groove.

[0013] As a further improvement of the above technical solution, an output connection end is provided at one end of the movable tube, and the output connection end is used to connect to a client product.

[0014] The beneficial effect of the utility model is that the utility model provides an electric push rod, which adopts a compact transmission mechanism. The nut of the lead screw is driven by a driving motor to rotate, thereby driving the movable bracket to extend and retract in the axial direction of the cylinder shell, thereby realizing the adjustment of the length of the electric push rod, replacing the traditional manual adjustment of the push rod length, improving the convenience of user use, and making user adjustment more convenient and simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 This is a structural schematic diagram of an electric push rod provided by the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of an electric push rod (excluding the cylinder shell) provided by the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of an electric push rod (excluding a cylinder shell and a wire) provided by the utility model;

[0019] Figure 4 It is a partial schematic diagram of the transmission mechanism in the utility model. Figure 1 ;

[0020] Figure 5 It is a partial schematic diagram of the transmission mechanism in the utility model. Figure 2 ;

[0021] Figure 6 It is a structural schematic diagram of the middle cylinder shell of the utility model.

[0022] Figure numerals: 11, cylinder shell; 111, slide groove; 12, movable tube; 121, button; 122, output connection terminal; 13, fixed seat; 2, transmission mechanism; 21, control board; 22, movable bracket; 231, drive motor; 232, screw rod; 233, nut; 3, rolling bearing; 4, roller; 5, travel limit switch plate; 6, wire clamp; 7, fixing piece; 8, mounting plate; 9, wire. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the utility model, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the fact that according to the specific implementation situation, a better connection structure can be formed by adding or reducing connection accessories. For example, fixed connection / fixed installation can be selected according to the needs of screw connection, bolt connection, pin connection, key connection, bonding, mortise and tenon connection, welding, riveting and other methods. For example, detachable connection can be selected according to the needs of screw connection, bolt connection, threaded connection, snap connection, mortise and tenon connection, Velcro connection and other methods. The various technical features in the creation of the utility model can be combined interactively without conflicting with each other.

[0024] Please refer to Figure 1-Figure 6 The utility model provides an electric push rod, including a shell and a transmission mechanism 2, the shell including a cylinder shell 11, a fixed seat 13 and a movable tube 12, the transmission mechanism 2 is fixedly installed on the fixed seat 13, the fixed seat 13 is connected to the movable tube 12 through the transmission mechanism 2 and is jointly arranged in the cylinder shell 11, the movable tube 12 is movably connected in the cylinder shell 11, and the transmission mechanism 2 is used to drive the movable tube 12 to move along the axial direction of the cylinder shell 11, so as to adjust the length of the electric push rod.

[0025] Among them, the transmission mechanism 2 includes a control board 21, a movable bracket 22 and a power assembly for driving the movable bracket 22 to perform linear motion. The control board 21 is fixedly mounted on the fixed seat 13, one end of the power assembly is connected to the control board 21, the power assembly is fixedly connected to the movable bracket 22, the movable bracket 22 is fixedly connected to the movable tube 12, and the control board 21 drives the power assembly to move forward and backward to drive the movable bracket 22 to move along the axial direction of the cylinder shell, so that the movable tube 12 moves along the axial direction of the cylinder shell 11.

[0026] Furthermore, the power assembly includes a driving motor 231, a screw rod 232 and a nut 233. The driving motor 231 is fixedly installed in the fixing seat 13 and is used to drive the screw rod 232 to rotate. A rolling bearing 3 is fixedly provided on the fixing seat 13, and the rolling bearing 3 is used to position the screw rod 232. The screw rod 232 is fixedly installed on the fixing seat 13 through the rolling bearing 3. One end of the screw rod 232 is connected to the output end of the driving motor 231 through a coupling, and the nut 233 is fixedly connected to the movable bracket 22. The driving motor 231 drives the screw rod 232 to rotate under the control of the control board 21, and the screw rod 232 drives the movable bracket 22 to move forward and backward, thereby driving the movable tube 12 to perform telescopic movement relative to the cylinder shell 11.

[0027] Furthermore, a wire clamp 6 is provided on one side of the movable bracket 22 for fixing the wire 9 to ensure that the wire 9 does not shift when the movable bracket 22 moves. A slide groove 111 is provided inside the cylinder shell 11, and a sliding block is provided on the side of the wire clamp 6. The sliding block can slide along the slide groove 111 on the cylinder shell 11, thereby driving the movable bracket 22 to move along the axial direction of the screw rod 232. Rollers 4 are provided on both sides of the movable bracket 22, and the rollers 4 are rollingly arranged on the slide groove 111. Through the arrangement of the rollers 4 and the slide groove 111, precise guiding and limiting functions are further provided for the movable bracket 22, ensuring that the movable bracket 22 does not deviate from the position or slide sideways during the movement.

[0028] Specifically, a mounting plate 8 is provided above the transmission mechanism 2, and a wire groove is provided on the mounting plate 8 to provide a circuit path between the control board 21 and the button 121 provided inside the cylinder shell 11. A plurality of fixing members 7 are provided on the movable bracket 22, and the wire 9 can be fixed to the movable bracket 22 through the fixing members 7, so that the wire 9 is neatly routed.

[0029] Furthermore, the fixed seat 13 is provided with a travel limit switch plate 5 at one end close to the movable bracket 22, and the travel limit switch plate 5 is used to detect the position of the movable bracket 22. When the user presses the button 121 or remotely controls the electric push rod to move, the control board 21 controls the screw rod 232 to rotate, thereby controlling the movable bracket 22 to move forward and backward. When the movable bracket 22 moves to a certain position due to the drive of the screw rod 232, the travel limit switch plate 5 will detect this position and send a signal. This signal can be used to control the drive motor 231 to stop or reverse, thereby ensuring that the movable bracket 22 does not exceed the set position range.

[0030] Furthermore, one end of the movable tube 12 is provided with an output connection end 122, and the output connection end 122 is used to connect the client product. The client product is a device that needs to use an electric push rod to adjust the height, such as an electronic display screen, an electric wheelchair, etc. The movable tube 12 is provided with a button 121, and the button 121 is electrically connected to the control board 21 through a wire 9 to achieve an electrical connection between the control board 21 and the wire 9. The user can adjust the length of the electric push rod through the button 121; the control board 21 is signal-connected with a control terminal, and the control terminal is used to remotely control the power component to adjust the length of the electric push rod. The control terminal can be a mobile phone, a computer, an infrared board, and other devices. For example, when the control terminal is an infrared board, the control board 21 can be infrared-connected to the infrared board, and the user can remotely control the length of the electric push rod through infrared control, thereby adjusting the height of the client product. In this way, the user can more conveniently adjust the length of the electric push rod, thereby adjusting the height of the client product, without directly contacting the device.

[0031] The above is a specific description of the preferred implementation of the utility model, but the invention of the utility model is not limited to the described embodiments. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the utility model. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An electric linear actuator, characterized in that: It includes a shell and a transmission mechanism, the shell includes a cylinder shell, a fixed seat and a movable tube, the transmission mechanism is fixedly installed on the fixed seat, the fixed seat is connected to the movable tube through the transmission mechanism and is jointly arranged in the cylinder shell, the movable tube is movably connected in the cylinder shell, a button is arranged on the movable tube, the transmission mechanism includes a control panel, a movable bracket and a power component for driving the movable bracket to make a linear motion, the movable bracket is fixedly connected to the movable tube, the button is electrically connected to the control panel through a wire, the control panel is installed on the fixed seat, and is used to receive a feedback signal of the button, and control the operation of the power component to drive the movable tube to move along the axial direction of the cylinder shell.

2. The electric linear actuator according to claim 1, characterized in that: The control panel is signal-connected to a control terminal, and the control terminal is used for remotely controlling the power assembly.

3. The electric linear actuator according to claim 1, characterized in that: The power assembly includes a driving motor, a screw rod and a nut. The driving motor is fixedly installed in the fixing seat. One end of the screw rod is connected to the output end of the driving motor. The nut is fixedly connected to the movable bracket.

4. The electric linear actuator according to claim 3, characterized in that: A rolling bearing is fixedly arranged on the fixing seat, and the screw rod is fixedly installed on the fixing seat through the rolling bearing.

5. The electric linear actuator according to claim 3, characterized in that: The driving motor is connected to the screw rod through a coupling.

6. The electric linear actuator according to claim 1, characterized in that: The fixing seat is provided with a travel limit switch plate at one end close to the movable bracket, and the travel limit switch plate is used to detect the position of the movable bracket.

7. The electric linear actuator according to claim 1, characterized in that: The movable bracket is provided with a wire clamp and a fixing piece, and both the fixing piece and the wire clamp are used to fix the wire.

8. The electric linear actuator according to claim 1, characterized in that: A slide groove is arranged inside the cylinder shell, rollers are arranged on both sides of the movable bracket, and the rollers are rollingly arranged on the slide groove.

9. The electric linear actuator according to claim 1, characterized in that: One end of the movable tube is provided with an output connection end, and the output connection end is used to connect to a client product.

Images