Motor assembly and steering column assembly

Abstract

The utility model discloses a motor assembly and a steering column assembly, the motor assembly comprises a motor, a mounting seat and a preassembled bolt, the motor is fixedly connected with the mounting seat, the preassembled bolt is movably connected with the mounting seat along a direction parallel to the axis of the motor, the preassembled bolt comprises a bottom part, a middle part and a head part, and the middle part of the preassembled bolt is movably connected with the mounting seat along the direction parallel to the axis of the motor. The bottom part is movably connected with the mounting seat, the middle part is not provided with threads, and the head part is provided with threads. According to the utility model, the preassembled bolt and the motor are installed together in advance, and during installation, after the preassembled bolt is inserted into the installation position on the tubular shell of the steering column, the installation of the motor and the steering column body can be completed by locking the nut. Moreover, when the two motor assemblies are installed, the installation directions of the two pre-installed bolts are at least parallel to each other, thereby facilitating the operation of a worker, improving the installation efficiency, and reducing the cost.

Description

Technical Field

[0001] This utility model relates to the technical field of steering column, and more particularly to a motor assembly and a steering column assembly. Background Technology

[0002] When assembling the two existing motor assemblies with the steering column, the mounting screws of the two motor assemblies are installed in different directions. Some screws are parallel to the axis, while others are at a certain angle to the axis, which affects the installation speed and is not conducive to the operation of workers.

[0003] In addition, the different specifications of the mounting screws for the two existing motor assemblies increase the difficulty and cost of installation.

[0004] Therefore, it is necessary to design a motor assembly and steering column assembly that is easy to install, increases installation speed, and reduces costs. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a motor assembly and steering column assembly that are easy to install, increase installation speed, and reduce costs.

[0006] The present invention provides a motor assembly, including a motor, a mounting base, and mounting bolts. The motor is fixedly connected to the mounting base, and the mounting bolts are movably connected to the mounting base along a direction parallel to the axis of the motor. The mounting bolts include a bottom, a middle section, and a head. The bottom is movably connected to the mounting base, the middle section is unthreaded, and the head section is threaded.

[0007] Furthermore, a motor screw is mounted on the mounting base, a motor nut is fitted on the motor screw, and two pre-installed bolts are mounted on the motor nut. The pre-installed bolts and the mounting bolts are arranged in the same axial direction.

[0008] Furthermore, the motor nut is provided with a stepped portion, and a bolt hole is provided on the stepped portion, and the pre-installed bolt is installed in the bolt hole.

[0009] Furthermore, the mounting base has a mounting hole, the bottom of the mounting bolt is inserted into the mounting hole, the mounting hole restricts the mounting bolt from moving axially, and the bottom is rotatable relative to the mounting hole.

[0010] This utility model also provides a steering column assembly, including a tubular housing and a steering shaft, and further including the motor assembly described in any of the above claims. The motor assembly is mounted on the tubular housing, and the motor assembly includes an angle adjustment motor assembly and a length adjustment motor assembly. The mounting directions of the two mounting bolts of the angle adjustment motor assembly and the length adjustment motor assembly are parallel to each other.

[0011] Furthermore, both mounting bolts of the angle adjustment motor assembly and the length adjustment motor assembly are installed perpendicularly to the steering shaft.

[0012] Furthermore, the angle adjustment motor assembly and the length adjustment motor assembly are mounted with their two mounting bolts facing opposite directions.

[0013] Furthermore, the angle adjustment motor assembly and the length adjustment motor assembly are arranged on the same side of the tubular housing.

[0014] Furthermore, the tubular housing is provided with two sets of support holes, each set of support holes including two, one of which is inserted into a set of support holes, the middle part of which is located between the two support holes in the set, and the head is threadedly connected to one of the support holes.

[0015] Furthermore, the two mounting bolts of the angle adjustment motor assembly and the length adjustment motor assembly are of the same specification.

[0016] The above technical solution has the following beneficial effects:

[0017] In this invention, pre-installed bolts are pre-mounted with the motor. During installation, the pre-installed bolts are inserted into the mounting positions on the tubular housing of the steering column, and then the locking nuts are tightened to complete the installation of the motor and the steering column body. Furthermore, when installing the two motor assemblies, the installation directions of the two mounting bolts are at least parallel to each other, facilitating operator operation, improving installation efficiency, and reducing costs. Simultaneously, the pre-installed bolts and mounting bolts use the same specification, reducing the number of parts in the steering column assembly and achieving parts standardization. Attached Figure Description

[0018] The disclosure of this utility model will become more readily understood by referring to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings:

[0019] Figure 1 This is a perspective view of the steering column assembly in one embodiment of the present invention;

[0020] Figure 2 This is a perspective view of two motor assemblies in one embodiment of the present invention;

[0021] Figure 3 This is a partially enlarged view of the steering column assembly in one embodiment of the present invention;

[0022] Figure 4This is a side view of the steering column assembly in one embodiment of the present invention;

[0023] Figure 5 This is a top view of a motor assembly in one embodiment of the present invention;

[0024] Figure 6 This is a cross-sectional view of the connection between the pre-installed bolt and the mounting base in one embodiment of this utility model;

[0025] Figure 7 This is a cross-sectional view of the connection between the mounting bolt and the motor nut in one embodiment of this utility model.

[0026] Appendix Label Reference Table:

[0027] Motor 1;

[0028] Mounting base 2: Mounting hole 21;

[0029] Pre-installed bolts 3: bottom 31, middle 32, head 33;

[0030] Motor screw 4;

[0031] Motor nut 5: Connector 51, bolt hole 52;

[0032] 6 mounting bolts;

[0033] Tubular shell 10: Support hole 101;

[0034] Steering shaft 20. Detailed Implementation

[0035] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0036] It is readily understood that, based on the technical solution of this utility model, various structural and implementation methods can be interchanged by those skilled in the art without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0037] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0038] In some embodiments of this utility model, such as Figure 5As shown, the motor assembly includes a motor 1, a mounting base 2, and a pre-installed bolt 3. The motor 1 is fixedly connected to the mounting base 2, and the pre-installed bolt 3 is movably connected to the mounting base 2 along a direction parallel to the axis of the motor 1. The pre-installed bolt 3 includes a bottom 31, a middle part 32, and a head 33. The bottom 31 is movably connected to the mounting base 2, the middle part 32 is unthreaded, and the head 33 is threaded.

[0039] Preferably, the motor 1 and the mounting base 2 are integrally formed.

[0040] Specifically, such as Figure 5 As shown, one end of the motor 1 is fixedly connected to the mounting base 2. The mounting base 2 is also equipped with a pre-installed bolt 3, which is located next to the motor 1 and is arranged parallel to the axis of the motor 1 in the length direction.

[0041] The pre-installed bolt 3 comprises three parts: a bottom part 31 that is movably connected to the mounting base 2, allowing it to rotate within the mounting base 2 and facilitating its assembly onto the steering column assembly for threaded connection to the tubular housing 10; a middle part 32 without threads, allowing the bolt to be inserted into the tubular housing 10; and a head part 33 with threads, enabling threaded connection to the tubular housing 10 and thus allowing the entire motor assembly to be installed onto the tubular housing 10.

[0042] In this embodiment, the pre-installed bolts 3 are pre-assembled onto the mounting base 2. Then, the pre-installed bolts 3 and the entire motor assembly are assembled onto the steering column assembly. During connection, it is only necessary to insert the pre-installed bolts 3 into the designated positions (support holes) of the tubular housing 10 and then tighten the pre-installed bolts 3. Compared with the prior art, where the bolts need to be aligned with both the holes of the mounting base and the support holes of the tubular housing, the entire installation process is simple to operate, easy for workers to operate, improves assembly efficiency, and helps reduce costs.

[0043] Furthermore, if Figure 5 As shown, a motor screw 4 is installed on the mounting base 2, a motor nut 5 is fitted on the motor screw 4, and two mounting bolts 6 are installed on the motor nut 5. The mounting bolts 6 and the pre-installed bolts 3 are arranged in the same axial direction.

[0044] Specifically, a motor screw 4 is also installed on the mounting base 2, and the length direction of the motor screw 4 is perpendicular to the axis direction of the motor 1.

[0045] The motor nut 5 is fitted onto the motor screw 4, and the mounting bolt 6 is installed on the connector 51 of the motor nut 5. The length direction of the mounting bolt 6 is also parallel to the axis direction of the motor 1.

[0046] As can be seen from the above, the arrangement direction (i.e., the bolt tightening direction) of the pre-installed bolts 3 and 6 is perpendicular to the length direction of the motor screw 4. During the adjustment of the steering column assembly, the motor nut 5 will move along the length direction of the motor screw 4 under the drive of the motor 1. Since the arrangement direction of the pre-installed bolts 3 and 6 is perpendicular to the length direction of the motor screw 4, the loosening of the pre-installed bolts 3 and / or 6 due to vibration caused by the movement of the motor nut 5 along the length direction of the motor screw 4 can be avoided to a certain extent.

[0047] like Figure 4 As shown, when the entire motor assembly is assembled with the steering column assembly, the mounting bolt 6 and the pre-installed bolt 3 together engage with the tubular housing 10 along the axial direction of the motor 1. The mounting bolt 6 is assembled at the designated position on the tubular housing 10, and after tightening, the motor nut 5 is connected to the tubular housing 10.

[0048] Since the length directions of mounting bolt 6 and pre-installed bolt 3 are parallel to the axis of motor 1, the entire motor assembly only needs to be assembled with the tubular housing 10 of the steering column assembly in the same direction to complete all installation operations, which is convenient for workers.

[0049] Furthermore, such as Figure 7 As shown, the motor nut 5 has a bolt hole 52 on the connecting part 51, and the mounting bolt 6 is installed in the bolt hole 52.

[0050] Specifically, the motor nut 5 is a hollow sleeve structure, through which the motor screw 4 passes. The motor nut 5 has a connector 51, on which a bolt hole 52 is formed. The mounting bolt 6 is assembled in the bolt hole 52, and part of the thread of the mounting bolt 6 passes through the bolt hole 52 for mating with the tubular housing 10.

[0051] Furthermore, such as Figure 6 As shown, the mounting base 2 has a mounting hole 21, and the bottom 31 of the pre-installed bolt 3 is inserted into the mounting hole 21. The mounting hole 21 restricts the pre-installed bolt 3 from moving axially, and the bottom 31 is rotatable relative to the mounting hole 21.

[0052] Specifically, the mounting hole 21 can be a hole that is larger at the top and smaller at the bottom. The bottom 31 is inserted into the mounting hole 21 and is restricted by the mounting hole 21 so that it will not detach from the mounting hole 21 axially. However, the bottom 31 can rotate relative to the mounting hole 21. When the middle part 32 and the head 33 of the pre-installed bolt 3 are engaged with the tubular housing 10, the pre-installed bolt 3 is rotated, thereby tightening the pre-installed bolt 3. At this time, the mounting base 2 remains stationary.

[0053] In this embodiment, the length of the pre-installed bolt 3 is greater than the length of the two mounting bolts 6. For example... Figure 4As shown, the pre-installed bolt 3 and the two mounting bolts 6 form a three-point positioning with the tubular housing 10, which can initially locate the position of the motor assembly and keep the mounting base 2 from shifting. Then, the pre-installed bolt 3 and the mounting bolts 6 are tightened to install and fix the motor assembly onto the tubular housing 10. In this embodiment, since the pre-installed bolt 3 and the mounting bolts 6 are both parallel to the axis of the motor 1, it is convenient to quickly assemble the motor assembly in the same direction, which facilitates the operation of the staff, improves work efficiency, and reduces costs.

[0054] In other embodiments of this utility model, such as Figure 1 As shown, the steering column assembly includes a tubular housing 10 and a steering shaft 20, and also includes a motor assembly mounted on the tubular housing 10. The motor assembly includes an angle adjustment motor assembly and a length adjustment motor assembly, and the two pre-installed bolts 3 of the angle adjustment motor assembly and the length adjustment motor assembly are parallel to each other in installation direction.

[0055] Specifically, there are two motor assemblies 10, one for angle adjustment and the other for length adjustment. The pre-installed bolts 3 of the two motor assemblies are installed in parallel directions to facilitate operation by the staff.

[0056] Furthermore, such as Figure 1 As shown, both pre-installed bolts 3 of the angle adjustment motor assembly and the length adjustment motor assembly are installed perpendicularly to the steering shaft 20.

[0057] Specifically, the installation directions of the two pre-installed bolts 3 are both perpendicular to the length direction of the steering shaft 20, and the two pre-installed bolts 3 are parallel to each other. Workers can install two motor assemblies from the side of the steering shaft 20.

[0058] In this embodiment, as Figure 1-Figure 2 As shown, the angle adjustment motor assembly and the length adjustment motor assembly are installed with their two pre-installed bolts 3 facing opposite directions.

[0059] Specifically, the two pre-installed bolts 3 are parallel in length but installed in opposite directions. One motor assembly is installed from the left side of the steering shaft 20 in the axial direction, and the other motor assembly is installed from the right side of the steering shaft 20 in the axial direction.

[0060] Alternatively, the two pre-installed bolts 3 can also be installed facing the same direction.

[0061] Preferably, the angle adjustment motor assembly and the length adjustment motor assembly are arranged on the same side of the tubular housing 10. For example... Figure 1As shown, both motor assemblies are located on the upper side of the tubular housing 10 in the axial direction (when assembled into a vehicle, the two motor assemblies are actually located on the lower side of the tubular housing 10 in the axial direction), and the two motor assemblies are arranged 180° apart from each other, making installation more efficient and easier to operate.

[0062] Furthermore, such as Figure 3 As shown, the tubular housing 10 is provided with two sets of support holes 101. Each set of support holes 101 includes two holes. One of the pre-installed bolts 3 is inserted into one set of support holes 101. The middle part 32 of the pre-installed bolt 3 is located between the two support holes 101 in the set, and the head 33 is threadedly connected to one of the support holes 101.

[0063] Specifically, the tubular housing 10 has two sets of support holes 101 for mounting two motor assemblies. One set of support holes 101 has two holes. During installation, a pre-installed bolt 3 is inserted into the two support holes 101 sequentially. The middle part 32 of the pre-installed bolt 3 is located between the two support holes 101. Since the middle part 32 is unthreaded, it can quickly pass through the first support hole 101. The diameter of the first support hole 101 is larger than the diameter of the other support hole 101. The other support hole 101 has internal threads, and the head 33 is inserted into the other support hole 101, with a threaded connection between the two. The diameter of the middle part 32 is larger than the diameter of the head 33 and the diameter of the other support hole 101, so that the middle part 32 is just outside the other support hole 101.

[0064] Preferably, the two pre-installed bolts 3 of the angle adjustment motor assembly and the length adjustment motor assembly are of the same specification. Using pre-installed bolts 3 of the same specification helps to reduce costs and makes it easier for operators to operate.

[0065] In this invention, pre-installed bolts are pre-installed with the motor. During installation, the pre-installed bolts are inserted into their mounting positions on the tubular housing of the steering column, and then the pre-installed nuts are tightened to complete the installation of the motor and the steering column body. Furthermore, when installing two motor assemblies, the installation directions of the two pre-installed bolts are at least parallel to each other, facilitating operator operation, improving installation efficiency, and reducing costs. Simultaneously, the pre-installed bolts and mounting bolts use the same specification, reducing the number of parts in the steering column assembly and achieving standardization of the steering column assembly components.

[0066] The above description is merely the principle and preferred embodiment of this utility model. It should be noted that, for those skilled in the art, several other modifications can be made based on the principle of this utility model, and these modifications should also be considered within the protection scope of this utility model.

Claims

1. A motor assembly comprising a motor, a mounting base, and pre-installed bolts, characterized in that, The motor is fixedly connected to the mounting base, and the pre-installed bolt is movably connected to the mounting base along a direction parallel to the axis of the motor. The pre-installed bolt includes a bottom, a middle part, and a head. The bottom part is movably connected to the mounting base, the middle part is unthreaded, and the head part is threaded.

2. The motor assembly according to claim 1, characterized in that, A motor screw is mounted on the mounting base, a motor nut is fitted on the motor screw, and two mounting bolts are mounted on the motor nut. The mounting bolts and the pre-installed bolts are arranged in the same axial direction.

3. The motor assembly according to claim 2, characterized in that, The motor nut is provided with a connector, and the connector has a bolt hole, and the mounting bolt is installed in the bolt hole.

4. The motor assembly according to claim 1, characterized in that, The mounting base has a mounting hole, the bottom of the pre-installed bolt passes through the mounting hole, the mounting hole restricts the pre-installed bolt from moving axially, and the bottom is rotatable relative to the mounting hole.

5. A steering column assembly, comprising a tubular housing and a steering shaft, characterized in that, It also includes the motor assembly according to any one of claims 1-4, the motor assembly being mounted on the tubular housing, the motor assembly including an angle-adjusting motor assembly and a length-adjusting motor assembly, the installation directions of the two pre-installed bolts of the angle-adjusting motor assembly and the length-adjusting motor assembly being parallel to each other.

6. The steering column assembly according to claim 5, characterized in that, Both of the pre-installed bolts of the angle adjustment motor assembly and the length adjustment motor assembly are installed perpendicularly to the steering shaft.

7. The steering column assembly according to claim 6, characterized in that, The angle adjustment motor assembly and the length adjustment motor assembly are installed with their two pre-installed bolts facing opposite directions.

8. The steering column assembly according to claim 5, characterized in that, The angle adjustment motor assembly and the length adjustment motor assembly are arranged on the same side of the tubular housing.

9. The steering column assembly according to claim 5, characterized in that, The tubular housing is provided with two sets of support holes, each set of support holes including two, one of which is a pre-installed bolt inserted into one set of support holes, the middle part of the pre-installed bolt is located between the two support holes in the set, and the head is threadedly connected to one of the support holes.

10. The steering column assembly according to claim 5, characterized in that, The two pre-installed bolts of the angle adjustment motor assembly and the length adjustment motor assembly are of the same specification.

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