Flexible shaft transmission motor separation type electric push rod

Abstract

The utility model provides a flexible shaft transmission motor separation type electric push rod, and relates to the technical field of electric push rods. Comprising a driving motor and a push rod assembly, the driving motor is in transmission connection to the power input end of the push rod assembly through a flexible shaft, and the flexible shaft is suitable for rotating under driving of the driving motor so as to drive the push rod assembly to work. Through the scheme, the application scene of the electric push rod can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric push rods, in particular to a flexible shaft transmission motor separated type electric push rod. Background Art

[0002] An electric linear actuator is a device that converts the rotational motion of a motor into linear motion through a screw-nut pair. Electric linear actuators are widely used in the industrial field, and they need to face a variety of application environments, such as high and low temperatures, high and low pressures, high humidity, liquid environments, etc. In conventional electric linear actuators, the motor and the screw are connected through gear transmission, worm gear transmission, belt transmission, etc. The motor and the main body of the linear actuator are in a bound state, that is, the position of the motor is fixed, and the motor must be in the working environment of the main body of the linear actuator. Therefore, in this case, it is necessary to face the problem of motor protection, such as wrapping with high-temperature resistant materials, sealing with sealing materials, explosion-proof structural layer protection, etc., which increases the manufacturing cost and complexity of the product. Utility Model Content

[0003] In view of this, the purpose of the present invention is to provide a flexible shaft transmission motor separated electric push rod to solve the above problems.

[0004] The utility model adopts the following scheme: the application provides a flexible shaft transmission motor separated electric push rod, including a drive motor and a push rod assembly, the drive motor is connected to the power input end of the push rod assembly through a flexible shaft transmission, and the flexible shaft is suitable for rotating under the drive of the drive motor to drive the push rod assembly to work.

[0005] Furthermore, the flexible shaft and the push rod assembly are detachably connected.

[0006] Furthermore, the flexible shaft is connected to the side of the push rod assembly through a transmission assembly.

[0007] Furthermore, the transmission assembly includes a mounting seat, in which a driving bevel gear connected to the flexible shaft and a driven bevel gear connected to the push rod assembly are arranged, and the driving bevel gear is transmission-connected to the driven bevel gear to drive the push rod assembly to work.

[0008] Furthermore, mutually perpendicular mounting grooves are arranged in the mounting seat, and the driven bevel gear and the driving bevel gear are vertically mounted in the mounting grooves.

[0009] Furthermore, the driving bevel gear is connected to the flexible shaft via a connector, and the connector is provided with a first bearing; and the driven bevel gear is provided with a second bearing.

[0010] Furthermore, the push rod assembly includes a fixing seat, and the mounting seat is detachably connected to the fixing seat.

[0011] Furthermore, the flexible shaft is connected to the end of the push rod assembly.

[0012] Furthermore, the push rod assembly includes a reducer, a screw and a telescopic rod, wherein the telescopic rod is connected to the screw, the screw is connected to the reducer, and the flexible shaft is connected to the power input end of the reducer through a coupling to drive the screw to rotate, thereby driving the telescopic rod to extend and retract.

[0013] Furthermore, a connecting sleeve is provided at the end of the flexible shaft, a nut sleeve threadedly connected to the connecting sleeve is provided on the push rod assembly, and the flexible shaft coupling is placed in the connecting sleeve and the nut sleeve.

[0014] Beneficial effects:

[0015] The utility model is arranged so that the flexible shaft can be detachably connected to the push rod assembly for transmission. Therefore, when used in a harsh environment, the drive motor can be arranged at a location with a better environment. The flexible shaft can enable the drive motor and the push rod assembly to be connected at any angle. The torque and rotation speed of the drive motor are transmitted through the flexible shaft, and the drive motor is isolated from the harsh working environment. The push rod assembly can cope with the harsh environment alone, thereby reducing the danger of using the push rod device in a harsh environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a flexible shaft transmission motor separated electric push rod in the first embodiment of the utility model;

[0017] Figure 2 This is another structural schematic diagram of a flexible shaft transmission motor separated electric push rod in the first embodiment of the utility model;

[0018] Figure 3 This is an exploded schematic diagram of a flexible shaft transmission motor separated electric push rod in the first embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of a flexible shaft transmission motor separated electric push rod in the second embodiment of the utility model;

[0020] Figure 5 This is an exploded schematic diagram of a flexible shaft transmission motor separated electric push rod in the second embodiment of the utility model;

[0021] Figure numerals: drive motor 1, push rod assembly 2, outer sleeve 201, inner sleeve 202, screw 203, telescopic rod 204, guide nut 205, reducer 206, screw bearing 207, screw bearing sleeve 208, flexible shaft 3, core shaft 31, transmission assembly 4, mounting seat 401, active bevel gear 402, driven bevel gear 403, first bearing 404, second bearing 405, connector 406, fixed seat 5, fixed sleeve 6, connecting sleeve 7, nut sleeve 8, reducer fixed sleeve 9, mounting hoop 10, fixed plate 11, coupling 12. DETAILED DESCRIPTION

[0022] Example 1

[0023] Combination Figures 1 to 3 As shown, this embodiment provides a flexible shaft transmission motor separated electric push rod, including a drive motor 1 and a push rod assembly 2, wherein the drive motor 1 is connected to the power input end of the push rod assembly 2 through a flexible shaft 3, and the flexible shaft 3 is suitable for rotating under the drive of the drive motor 1 to drive the push rod assembly 2 to work.

[0024] In this embodiment, the push rod assembly 2 includes an outer sleeve 201, an inner sleeve 202, a screw 203, a telescopic rod 204, a guide nut 205, a reducer 206, a screw bearing 207 and a screw bearing sleeve 208, wherein the screw 203 is connected to the reducer 206, the telescopic rod 204 is connected to the screw 203 and installed in the inner sleeve 202, the guide nut 205 is installed at the end of the inner sleeve 202, and the telescopic rod 204 passes through the guide nut 205. The telescopic rod 204 forms a ball screw pair with the screw 203 in the inner sleeve 202, so that when the reducer 206 drives the screw 203 to rotate, the telescopic rod 204 can be driven to telescope along the length direction of the inner sleeve 202. The reducer 206 here is an existing device. Of course, in other embodiments, the push rod assembly 2 can also be an existing structure, and the solution that can realize the telescopic rod 204 telescopic by rotating is within the protection scope of this application.

[0025] The flexible shaft 3 is an existing transmission flexible shaft 3 with a core shaft 31, which has a certain flexibility and can transmit rotation torque and rotation speed through the drive motor 1. The flexible shaft 3 is detachably connected to the drive motor 1.

[0026] In this embodiment, the flexible shaft 3 is connected to the side of the push rod assembly 2 through the transmission assembly 4. Specifically, the transmission assembly 4 includes a mounting seat 401, in which an active bevel gear 402 connected to the flexible shaft 3 and a driven bevel gear 403 connected to the push rod assembly 2 are arranged, and the active bevel gear 402 is transmission-connected to the driven bevel gear 403 to drive the push rod assembly 2 to work. In this embodiment, the push rod assembly 2 includes a fixed seat 5, and the mounting seat 401 is detachably connected to the fixed seat 5. The outer sleeve 201 is connected to the fixed seat 5 and is used to support the reducer 206. The driven bevel gear 403 is connected to the power input end of the reducer 206, so that when the driven bevel gear 403 rotates, the rotating shaft of the reducer 206 can be driven to rotate. In this embodiment, the mounting seat 401 is provided with mutually perpendicular mounting grooves, and the driven bevel gear 403 and the driving bevel gear 402 are vertically mounted in the mounting grooves, that is, by providing two mutually perpendicularly connected bevel gears, the reversal of power is achieved, so that the push rod assembly 2 can also be driven from the side to work, thereby improving the applicable environment for the installation of the drive motor 1. The driven bevel gear 403 is provided with a second bearing 405, and the second bearing 405 supports the rotating shaft of the reducer 206.

[0027] The active bevel gear 402 is connected to the flexible shaft 3 via a connector 406, and a first bearing 404 is provided on the connector 406. A fixing sleeve 6 is provided at the end of the flexible shaft 3, and the fixing sleeve 6 is fixed to the mounting seat 401 by bolts. The connector 406 is used for transmission connection between the core shaft 31 of the flexible shaft 3 and the active bevel gear 402.

[0028] This embodiment can adapt to installation environments with large turns by arranging the flexible shaft 3 on the side of the push rod assembly 2, and provide more application scenarios for the installation of the push rod assembly 2 and the drive motor 1.

[0029] Example 2

[0030] Combination Figures 4 to 5 As shown, in this embodiment, the structure of the push rod assembly 2 can be the same as or similar to the structure of the above-mentioned embodiment. The key is that the flexible shaft 3 is connected to the end of the push rod assembly 2. The end here refers to the end of the core shaft 31 of the flexible shaft 3 connected to the axial direction of the reducer 206 through the coupling 12, so that the flexible shaft 3 and the push rod assembly 2 can form a straight line when needed, thereby adapting to a narrower space.

[0031] Specifically, in this embodiment, the flexible shaft 3 is connected to the power input end of the reducer 206 through a coupling 12 to drive the screw 203 to rotate, thereby driving the telescopic rod 204 to extend and retract. A connecting sleeve 7 is also provided at the end of the flexible shaft 3, and a nut sleeve 8 is provided on the push rod assembly 2 to be threadedly connected to the connecting sleeve 7, and the coupling of the flexible shaft 3 is placed in the connecting sleeve 7 and the nut sleeve 8. Here, the flexible shaft 3 and the push rod assembly 2 can be quickly disassembled and installed by the connecting sleeve 7 and the nut sleeve 8. In this embodiment, a reducer fixing sleeve 9 is connected to the end of the outer sleeve 201 of the push rod assembly 2, and the reducer fixing sleeve 9 is connected to the nut sleeve 8, so that the entire push rod device and the drive motor 1 are more compact.

[0032] In other embodiments, the push rod assembly 2 can be fixed on a fixing plate 11 by means of a mounting hoop 10 , so as to be installed at a desired position through the fixing plate 11 .

[0033] Through the above-mentioned embodiment scheme, when the electric push rod is in use, the drive motor 1 can be installed in a relatively safe position, and the push rod assembly 2 can be installed in a harsh environment for driving, thereby improving the safety of the electric push rod when in use and making the electric push rod suitable for more application scenarios.

[0034] 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.

[0035] 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 flexible shaft transmission motor separated electric push rod, comprising a drive motor and a push rod assembly, characterized in that: The driving motor is connected to the power input end of the push rod assembly through a flexible shaft transmission, and the flexible shaft is suitable for rotating under the drive of the driving motor to drive the push rod assembly to work.

2. The flexible shaft transmission motor separation electric push rod according to claim 1 is characterized in that: The flexible shaft is detachably connected to the push rod assembly.

3. The flexible shaft transmission motor separated electric push rod according to claim 2 is characterized in that: The flexible shaft is connected to the side of the push rod assembly through a transmission assembly.

4. The flexible shaft transmission motor separated electric push rod according to claim 3 is characterized in that: The transmission assembly includes a mounting seat, in which an active bevel gear connected to the flexible shaft and a driven bevel gear connected to the push rod assembly are arranged. The active bevel gear is transmission-connected to the driven bevel gear to drive the push rod assembly to work.

5. The flexible shaft transmission motor separation electric push rod according to claim 4 is characterized in that: The mounting seat is provided with mutually perpendicular mounting grooves, and the driven bevel gear and the driving bevel gear are vertically mounted in the mounting grooves.

6. The flexible shaft transmission motor separated electric push rod according to claim 4 is characterized in that: The driving bevel gear is connected to the flexible shaft via a connector, and the connector is provided with a first bearing; and the driven bevel gear is provided with a second bearing.

7. The flexible shaft transmission motor separation electric push rod according to claim 4 is characterized in that: The push rod assembly includes a fixing seat, and the mounting seat is detachably connected to the fixing seat.

8. The flexible shaft transmission motor separation electric push rod according to claim 2 is characterized in that: The flexible shaft is connected to the end of the push rod assembly.

9. The flexible shaft transmission motor separation electric push rod according to claim 8, characterized in that: The push rod assembly includes a reducer, a screw and a telescopic rod, wherein the telescopic rod is connected to the screw, the screw is connected to the reducer, and the flexible shaft is connected to the power input end of the reducer through a coupling to drive the screw to rotate, thereby driving the telescopic rod to extend and retract.

10. The flexible shaft transmission motor separation electric push rod according to claim 9, characterized in that: A connecting sleeve is arranged at the end of the flexible shaft, a nut sleeve threadedly connected to the connecting sleeve is arranged on the push rod assembly, and the flexible shaft coupling is placed in the connecting sleeve and the nut sleeve.

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