Electronic power-assisted steering column tube connecting device

Abstract

The utility model relates to an electronic power-assisted steering column and pipe connecting device, which belongs to the technical field of electronic power-assisted steering columns and comprises an electric motor, a lower pipe column is fixedly mounted at the top of the electric motor, and a pipe column connecting structure extending into the lower pipe column is arranged at the top of the lower pipe column. The pipe column connecting structure comprises an upper pipe column which is arranged on the top of the lower pipe column and extends into the lower pipe column. According to the electronic power-assisted steering column and pipe connecting device, by arranging the lower pipe column and the upper pipe column, the upper pipe column is sleeved with the lower pipe column, meanwhile, small-amplitude telescopic treatment can be conveniently conducted on the upper pipe column, by arranging the buffering positioning sleeve, the upper pipe column can play a buffering role in the moving process, and the protection effect is improved; by arranging the external spline and the internal spline, when a driver conducts steering operation, the upper tubular column can drive the external spline and the internal spline to rotate, then steering information can be transmitted to the electric motor through the controller, and then follow-up control operation is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic power steering columns, in particular to an electronic power steering column tube connecting device. Background Art

[0002] The electronic power steering column is a crucial component of modern vehicle steering systems. It integrates electronic control technology with a mechanical transmission mechanism to provide drivers with a more lightweight, precise, and safer steering experience. The electronic power steering column is a steering-assistance system that precisely adjusts steering force through an electronic control unit (ECU). When the driver turns the steering wheel, a sensor unit detects the steering wheel's angle, speed, and torque in real time and transmits this information to the ECU. Based on a preset algorithm and vehicle status (such as speed and steering angle), the ECU calculates the required power assist and controls the electric motor to output the corresponding torque. The electric motor then transmits the torque to the steering gear via a mechanical transmission mechanism, thereby driving the vehicle to steer.

[0003] Chinese utility model patent publication number CN217456097U discloses an electronic power steering device with a reliable cable-dust plug connection. The device comprises an electronic power steering device housing, a dust plug, and a cable inserted through the dust plug. The dust plug has a through hole, and the electronic power steering device housing has a hole for installing the dust plug. The dust plug is provided with an inner stopper that abuts the inner wall of the electronic power steering device housing, an outer stopper that abuts the outer wall of the electronic power steering device housing, and a binding portion for binding with a cable tie. The outer stopper of the binding portion extends away from the inner stopper. The binding portion has an arc-shaped cross-section, and the sidewalls of the binding portion are provided with a boss to prevent the cable tie from falling off. This utility model effectively prevents dust and ensures effective binding between the binding portion and the cable, preventing the cable tie from falling off.

[0004] However, during use, the utility model utilizes the special structure of the dust plug to prevent the cable from falling off. However, the top of the dust plug is an exposed device, and the cable may fall off from the top of the dust plug. There is a certain degree of falling off, which cannot meet production needs. Therefore, an electronic power steering column tube connection device is proposed to solve the above problems. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides an electronic power steering column tube connection device, which has the advantage of good cable fixing effect. It solves the problem that although the special structure of the dust plug can prevent the cable from falling off, the top of the dust plug is an exposed device, and the cable may fall off outward from the top of the dust plug, resulting in a certain degree of falling off, which cannot meet production needs.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an electronic power steering column tube connection device, comprising an electric motor, a lower column fixedly mounted on the top of the electric motor, and a column connection structure extending into the interior of the lower column provided on the top of the lower column;

[0007] The pipe column connection structure includes an upper pipe column arranged on the top of the lower pipe column and extending into the interior thereof, the top end of the lower pipe column is fixedly connected to a buffer positioning sleeve extending into the interior thereof, the upper pipe column is slidably connected to the buffer positioning sleeve, one end of the upper pipe column located inside the lower pipe column is fixedly connected to an external spline, and the interior of the lower pipe column is fixedly installed with an internal spline that meshes with the external spline.

[0008] Furthermore, the shape of the buffer positioning sleeve is T-shaped, and the external spline is located inside the internal spline.

[0009] Furthermore, a mounting seat is fixedly connected to the outside of the lower pipe column, and a controller is fixedly mounted on one side of the mounting seat.

[0010] Furthermore, a mounting sleeve is slidably connected to the outside of the lower pipe column, and one side of the mounting sleeve is fixedly connected to two connecting plates, and two cable tie through holes are provided inside the two connecting plates.

[0011] Furthermore, there are two mounting sleeves, which are respectively distributed at the top and bottom of the outer surface of the lower pipe column. The inner wall of the mounting sleeve is fixedly connected to the anti-slip sleeve that fits the outer wall of the lower pipe column.

[0012] Furthermore, the front and back sides of the lower pipe column are both slidably connected with connectors, and the front side of the front connector is threadedly connected with a fixing bolt extending to the back side of the back connector.

[0013] Furthermore, mounting holes are provided inside the two connecting members, and anti-slip pads are fixedly connected to opposite sides of the two connecting members.

[0014] Compared with the prior art, the present invention provides an electronic power steering column tube connection device, which has the following beneficial effects:

[0015] 1. The electronic power steering column tube connection device is provided with a lower column and an upper column so that the lower column is sleeved on the outside of the upper column, and at the same time facilitates small-scale extension and contraction of the upper column. The buffer positioning sleeve is provided so that the upper column can play a buffering role during movement, thereby improving the protection effect. By providing external splines and internal splines, when the driver performs steering operations, the upper column can drive the external splines and the internal splines to rotate, and then the steering information can be transmitted to the electric motor through the controller to complete the subsequent control operations.

[0016] 2. The electronic power steering column tube connection device is provided with a mounting sleeve and two connecting plates, and then with a cable tie through-hole, so that the staff can fix the cable with the cooperation of the cable tie and the two connecting plates, and can effectively prevent the cable from falling off. It solves the problem that although the special structure of the dust plug can prevent the cable from falling off, the top of the dust plug is an exposed device, and the cable may fall off outward from the top of the dust plug, resulting in a certain degree of falling off, which cannot meet production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a cross-sectional view of the structure of the utility model;

[0018] Figure 2 This is a top view of the structure of the external spline of the utility model;

[0019] Figure 3 This is a structural stereogram of the installation sleeve of the utility model;

[0020] Figure 4 This is a structural stereogram of the connecting piece of the utility model.

[0021] In the figure: 1 electric motor, 2 lower pipe column, 3 upper pipe column, 4 buffer positioning sleeve, 5 internal spline, 6 external spline, 7 mounting seat, 8 controller, 9 mounting sleeve, 10 connecting plate, 11 cable tie through hole, 12 anti-slip sleeve, 13 connecting piece, 14 fixing bolt, 15 mounting hole, 16 anti-slip pad. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figures 1 to 4 In this embodiment, an electronic power steering column tube connection device includes an electric motor 1, a lower tube column 2 is fixedly installed on the top of the electric motor 1, and a tube column connection structure extending into the interior of the lower tube column 2 is provided on the top of the lower tube column 2. The tube column connection structure includes an upper tube column 3 provided on the top of the lower tube column 2 and extending into the interior thereof, a buffer positioning sleeve 4 extending into the interior thereof is fixedly connected to the top of the lower tube column 2, the upper tube column 3 is slidably connected to the buffer positioning sleeve 4, an end of the upper tube column 3 located inside the lower tube column 2 is fixedly connected to an external spline 5, and an internal spline 6 engaged with the external spline 5 is fixedly installed inside the lower tube column 2.

[0024] The buffer positioning sleeve 4 is T-shaped, the external spline 5 is located inside the internal spline 6, the outside of the lower pipe column 2 is fixedly connected to the mounting seat 7, and a controller 8 is fixedly installed on one side of the mounting seat 7.

[0025] It should be noted that the material of the buffer positioning sleeve 4 is rubber. By setting the lower tube column 2 and the upper tube column 3, the lower tube column 2 is sleeved on the outside of the upper tube column 3, and at the same time, it is convenient to perform small-scale expansion and contraction processing on the upper tube column 3. By setting the buffer positioning sleeve 4, the upper tube column 3 can play a buffering role during the movement, thereby improving the protection effect.

[0026] In this embodiment, the outside of the lower pipe column 2 is slidably connected to a mounting sleeve 9, and two connecting plates 10 are fixedly connected to one side of the mounting sleeve 9. Two cable tie through-holes 11 are provided inside the two connecting plates 10. There are two mounting sleeves 9, and the two mounting sleeves 9 are respectively distributed at the top and bottom of the outer surface of the lower pipe column 2. The inner wall of the mounting sleeve 9 is fixedly connected to an anti-slip sleeve 12 that fits the outer wall of the lower pipe column 2.

[0027] The anti-slip sleeve 12 is made of rubber. The two mounting sleeves 9 are both located on the top of the controller 8 , and the connecting plates 10 on the two mounting sleeves 9 are located on the same side.

[0028] It should be noted that by providing the installation sleeve 9 and two connecting plates 10, and then by providing the cable tie through-holes 11, it is convenient for the staff to fix the cables with the cooperation of the cable tie and the two connecting plates 10, and at the same time, it can effectively prevent the cables from falling off. The material of the connecting plate 10 is silicone.

[0029] In this embodiment, the front and back sides of the lower pipe column 2 are both slidably connected with connectors 13, the front side of the front connector 13 is threadedly connected with a fixing bolt 14 extending to the back side of the back connector 13, and the interiors of the two connectors 13 are provided with mounting holes 15, and the opposite sides of the two connectors 13 are fixedly connected with anti-slip pads 16.

[0030] There are four fixing bolts 14 and four mounting holes 15 on each connector 13 . By providing two connectors 13 , it is convenient to fix the lower column 2 on the vehicle frame, thereby improving the stability of the lower column 2 .

[0031] The working principle of the above embodiment is:

[0032] First, the staff fixes the device in the designated position, and then places the cable between the two connecting plates 10. At this time, the cable is positioned and fixed with a cable tie. Then, the two connecting parts 13 are respectively put on the front and back of the lower tube column 2, and the two connecting parts 13 are preliminarily fixed with the fixing bolts 14. Then, the staff uses bolts to fix the connecting parts 13 to the frame, thereby achieving the effect of fixing the lower tube column 2.

[0033] The electrical components mentioned in this article are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device that controls a computer, etc., and the existing public power connection technology is not described in detail in this article.

[0034] It should 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 the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so 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 other identical elements in the process, method, article, or device comprising the element.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electronic power steering column tube connection device, comprising an electric motor (1), characterized in that: A lower pipe column (2) is fixedly mounted on the top of the electric motor (1), and a pipe column connection structure extending into the interior of the lower pipe column (2) is provided on the top of the lower pipe column (2); The pipe column connection structure includes an upper pipe column (3) arranged on the top of the lower pipe column (2) and extending into the interior thereof, the top end of the lower pipe column (2) is fixedly connected to a buffer positioning sleeve (4) extending into the interior thereof, the upper pipe column (3) is slidably connected to the buffer positioning sleeve (4), one end of the upper pipe column (3) located inside the lower pipe column (2) is fixedly connected to an external spline (5), and the interior of the lower pipe column (2) is fixedly installed with an internal spline (6) engaged with the external spline (5).

2. The electronic power steering column tube connection device according to claim 1, characterized in that: The buffer positioning sleeve (4) is in a T-shape, and the external spline (5) is located inside the internal spline (6).

3. The electronic power steering column tube connection device according to claim 1, characterized in that: The outside of the lower pipe column (2) is fixedly connected to a mounting seat (7), and a controller (8) is fixedly mounted on one side of the mounting seat (7).

4. The electronic power steering column tube connection device according to claim 1, characterized in that: The outside of the lower pipe column (2) is slidably connected to a mounting sleeve (9), one side of the mounting sleeve (9) is fixedly connected to two connecting plates (10), and the inside of the two connecting plates (10) are provided with two tie through holes (11).

5. The electronic power steering column tube connection device according to claim 4, characterized in that: There are two mounting sleeves (9), which are respectively distributed at the top and bottom of the outer surface of the lower pipe column (2). The inner wall of the mounting sleeve (9) is fixedly connected to the anti-slip sleeve (12) that fits the outer wall of the lower pipe column (2).

6. The electronic power steering column tube connection device according to claim 1, characterized in that: The front and back sides of the lower pipe column (2) are both slidably connected with a connecting piece (13), and the front side of the front connecting piece (13) is threadedly connected with a fixing bolt (14) extending to the back side of the back connecting piece (13).

7. The electronic power steering column tube connection device according to claim 6, characterized in that: The interiors of the two connecting members (13) are each provided with a mounting hole (15), and opposite sides of the two connecting members (13) are each fixedly connected with an anti-slip pad (16).

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