Push rod connector, transmission mechanism, rear wheel steering device and vehicle

Abstract

The utility model relates to a connecting piece of a vehicle, and discloses a push rod connector which comprises a connecting main body (1), a connecting part (3) capable of being directly connected with a push rod (2) is formed at one end of the connecting main body, and a mounting part (4) capable of being connected with a connecting rod is formed at the other end of the connecting main body (1). The push rod connector can be directly connected with the push rod, other connecting media are not needed, production cost is reduced, meanwhile, installation steps are reduced, working efficiency is improved, installation gaps between the connecting media and the push rod are avoided, and the service life of the push rod connector is prolonged. In addition, the utility model further relates to a transmission mechanism comprising the push rod connector, a rear wheel steering device and a vehicle.

Description

Technical Field

[0001] The utility model relates to a connecting piece of a vehicle, in particular to a push rod connecting head. In addition, the utility model also relates to a transmission mechanism, a rear wheel steering device and a vehicle comprising the push rod connecting head. Background Art

[0002] In the steering device of the car, a mounting fork is required as a connecting component between the push rod and the connecting rod. The mounting fork is also called a push rod connector. The push rod drives the connecting rod to achieve the steering stroke of the wheel. The current mounting method is to connect the mounting fork and the push rod by bolts to fasten the mounting fork to one end of the push rod.

[0003] However, bolts, as separate parts, require separate production lines and materials to produce, which increases production costs to a certain extent. Moreover, bolts also require a process to be installed, which increases the installation process and reduces installation efficiency. In addition, as a connecting piece, there is an intersecting gap between the bolt and the mounting fork. Over time, water, dust, and aerosols can easily enter, causing the mounting fork to be in an environment that is not conducive to preservation, thereby shortening the service life of the vehicle steering device.

[0004] Therefore, a new type of connection needs to be designed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a push rod connector, which can be directly connected to the push rod without using other connecting media, thereby reducing production costs, reducing installation steps, improving work efficiency, avoiding installation gaps between the connecting media and the push rod, and increasing its service life.

[0006] In order to solve the above technical problems, the first aspect of the utility model provides a push rod connector, including a connecting body, one end of which is formed with a connecting portion that can be directly connected to the push rod, and the other end of which is formed with a mounting portion that can be connected to the connecting rod.

[0007] Furthermore, the connecting portion is a connecting column, and an external thread that can be connected to the push rod is provided on the outer peripheral surface of the connecting column.

[0008] Furthermore, a boss is formed at one end of the cylinder away from the push rod, and the boss can abut against a step inside the push rod.

[0009] Furthermore, the mounting portion includes two mounting feet relatively arranged at one end of the connecting body facing away from the push rod, each of the mounting feet is provided with a mounting hole, and the axis of the mounting hole is perpendicular to the axis of the connecting column.

[0010] Furthermore, a groove portion is provided on a side of the connecting body facing away from the push rod, and the groove portion is located between two mounting feet.

[0011] Furthermore, a receiving groove is formed on the outward working surface of the mounting foot, and the receiving groove is communicated with the mounting hole.

[0012] The second aspect of the utility model also discloses a transmission mechanism, including a push rod, a screw nut and a push rod connector as described in any one of the technical solutions provided in the first aspect. The screw nut is sleeved on the push rod, and an external thread matching the screw nut is formed on the outer peripheral surface of one end of the push rod away from the push rod connector, so that the push rod can move along its own axis under the action of the screw nut.

[0013] Furthermore, a buffer is provided between an end surface of a step formed at one end of the push rod facing the push rod connector and an end surface of a boss formed on the connecting column facing the push rod.

[0014] Furthermore, it also includes a dust cover, wherein a portion of the dust cover is sleeved on the push rod connector, and another portion of the dust cover is sleeved on the push rod.

[0015] Furthermore, one end of the push rod close to the push rod connector is sleeved with a sliding bearing.

[0016] The third aspect of the utility model further discloses a rear wheel steering device, comprising a connecting rod and a transmission mechanism described in any one of the technical solutions provided in the second aspect.

[0017] Furthermore, one end of the push rod connector is directly connected to the push rod through a connecting portion, and the other end of the push rod connector is connected to the connecting rod through a mounting portion.

[0018] The fourth aspect of the utility model further discloses a vehicle, characterized by comprising a rear wheel steering device as described in any one of the technical solutions provided in the third aspect.

[0019] Through the above technical solution, the beneficial effects of the utility model are as follows:

[0020] The first aspect of the utility model provides a push rod connector, which mainly includes a connecting body, one end of the connecting body is formed with a connecting portion that can be directly connected to the push rod, and the other end of the connecting body is formed with a mounting portion that can be connected to the connecting rod. The utility model has a simple structure and does not need to use other connection media, which reduces production costs, reduces installation steps, and improves work efficiency.

[0021] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0023] Figure 1 It is a structural schematic diagram of a specific implementation method of the push rod connector of the utility model;

[0024] Figure 2 It is a structural schematic diagram of a specific implementation method of the push rod connector of the utility model being installed on the push rod;

[0025] Figure 3 It is a structural schematic diagram of a specific implementation of the transmission mechanism of the utility model;

[0026] Figure 4 yes Figure 3 A local enlarged view of point A;

[0027] Figure 5 It is a partial view of the end of the push rod in the transmission mechanism of the utility model.

[0028] Description of Reference Numerals

[0029] 1 connecting body 11 groove part

[0030] 2 putters 21 steps

[0031] 3 connection part 31 boss

[0032] 4 mounting portion 41 mounting foot

[0033] 42 mounting hole 43 receiving slot

[0034] 5 buffer 6 sliding bearing DETAILED DESCRIPTION

[0035] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation modes described herein are only used to illustrate and explain the present invention, and the protection scope of the present invention is not limited to the specific implementation modes described below.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed", "provided with", "installed", "matched", and "connected" should be understood in a broad sense. For example, the connection can be a direct connection or an indirect connection through an intermediate medium, a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present invention, unless otherwise stated, the directional words used, such as "one end, the other end", are defined based on the inside and outside of the corresponding parts. In addition, "toward, away from" are defined based on the direction in which the push rod 2 is used, and the "axis" is defined based on the arrangement direction of the various components provided by the present invention. Specifically, in the drawings provided by the present invention, the orientation or position relationship used is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The orientation terms of the present invention should be understood in conjunction with the actual installation state.

[0038] In the traditional installation process of the connecting rod and the push rod 2, the push rod connector is often used as a connecting piece, and the push rod connector needs to be installed on the end of the push rod 2 by means of mounting bolts. This not only increases the installation process and reduces the installation efficiency, but also the mounting bolts as separate parts also require a separate production line for production, which increases the production cost. In addition, because there will be an installation gap between the mounting bolts and the push rod connector and the push rod 2, the sealing will be reduced over time, causing contaminants to enter the installation gap, thereby reducing the service life of each component.

[0039] In view of the above problems, the utility model provides a push rod connector in the first aspect. Figure 1 to Figure 2 The push rod connector includes a connecting body 1, wherein one end of the connecting body 1 is formed with a connecting portion 3 that can be directly connected to the push rod 2, and the other end of the connecting body 1 is formed with a mounting portion 4 that can be connected to the connecting rod. The push rod connector provided by the utility model has a simple structure, and can be directly connected to the push rod 2 by directly setting the connecting portion 3 on the connecting body 1 of the push rod connector, without using other intermediate media as a connecting piece.

[0040] It should be noted that, since the force applied to the push rod connector during use is a lateral force and the shear force applied is much smaller than the lateral force, the connection function and the fastening function can be combined on the push rod connector to form the push rod connector provided by the utility model. The connection and fastening effects achieved are better than those achieved by using mounting bolts. Moreover, the push rod connector provided by the utility model not only reduces the production and processing steps for the mounting bolts and reduces the production cost, but also can better improve the fastening and sealing performance between the push rod connector and the push rod 2. Since the mounting bolts are reduced, the installation steps are further reduced. In addition, since the push rod connector provided by the utility model is directly connected to the push rod 2, the problem of an installation gap between the mounting bolt and the push rod 2, which makes it easy for contaminants to enter the installation gap, is avoided, thereby extending the service life of each component.

[0041] Further, as a specific embodiment of the push rod connector, see Figure 1 The connection part 3 formed at one end of the connection body 1 can be a connection column, and an external thread that can be connected to the push rod 2 is provided on the outer peripheral surface of the connection column. The threaded connection can withstand large tensile, shear and torque forces, is suitable for high load conditions, can improve the tightness between the push rod connector and the push rod 2, and can also improve the sealing between the push rod connector and the push rod 2.

[0042] In addition, regarding the structural form of the connecting portion 3, the above technical solution is only used as a specific implementation of the utility model. In addition to the connecting column with external threads processed on the outer peripheral surface, the connecting portion 3 can also be a connecting clamping pin. An accommodating cavity capable of abutting against the connecting clamping pin is provided inside the push rod 2. The connecting clamping pin is inserted into the accommodating cavity and forms a clamping connection with the accommodating cavity, which can also realize the direct connection between the push rod connector and the push rod 2. Specifically, the structural form of the connecting portion 3 can be set according to the actual use environment.

[0043] Further, see Figure 1 , Figure 2 and Figure 5 As a specific embodiment of the present invention, a boss 31 is formed at the end of the connecting column away from the push rod 2, and the boss 31 can abut against the step 21 inside the push rod 2. The boss 31 matching the step 21 of the push rod 2 can achieve better positioning during installation, further improving the installation accuracy. It can be understood that "the end away from the push rod 2" refers to the end of the connecting column adjacent to the connecting body 1.

[0044] See also Figure 1 and Figure 2The mounting portion 4 of the push rod connector provided by the utility model includes two mounting feet 41 relatively arranged at one end of the connecting body 1 facing away from the push rod 2, and each mounting foot 41 is provided with a mounting hole 42, and the axis of the mounting hole 42 is perpendicular to the axis of the connecting column. One end of the push rod connector provided by the utility model is used to connect with the push rod 2, and the other end is used to connect with the connecting rod. As a connecting piece, in order to better connect with the connecting rod, the push rod connector is provided with two mounting feet 41, and the end of the connecting rod is clamped by the two mounting feet 41, and then bolts and other connecting parts are used to pass through the mounting holes 42 and the connecting rod to complete the connection and fixation.

[0045] Furthermore, a receiving groove 43 is formed on the outward working surface of the mounting foot 41. The receiving groove 43 is the same as the mounting hole 42. The receiving groove 43 can accommodate the end of the connecting part so that the mounting foot 41 has a flat outward working surface after the connection with the connecting rod is completed, thereby preventing the end of the connecting part from being collided with during use, causing the connecting part to loosen and affecting the connection between the push rod connector and the connecting rod. In addition, the connection structure between the push rod connector and the connecting rod is further optimized to prevent the protruding end of the connecting part from interfering with other surrounding parts.

[0046] In addition, as a specific implementation of the present invention, see Figure 1 to Figure 2 A groove portion 11 is provided on the side of the connecting body 1 facing away from the push rod 2, and the groove portion 11 is located between the two mounting feet 41. Because the push rod connector is generally made of steel, it has a heavy weight. In order to reduce its own weight, a lightweight design is performed and a groove portion 11 is provided on the connecting body 1 to reduce its own weight.

[0047] The screw rod of the transmission mechanism in the rear-wheel steering device currently used mostly adopts a structural form that has a threaded section and is connected to the push rod 2 as a connecting shaft at both ends. In this structural form, three sections of threads need to be processed on the outer circumference of the screw rod. The threads at both ends are used to install the push rod 2, and the threads in the middle are used to cooperate with the nut. However, due to the problem of its own length, when manufacturing the threads on its outer circumference, errors are prone to occur in each section of the thread, and the errors will directly affect the cylindricity of the entire assembly shaft during later installation. In addition, the push rod 2 as a connecting shaft set at both ends of the screw rod is also connected to the screw rod through threads. Once the thread processing on the screw rod has errors, the installation of the push rod 2 will also have angle problems, and the angle will be difficult to reach a more accurate value due to the thread tolerance on the screw rod. Specifically, the cylindricality problem will make it impossible to apply stress to the axis of the transmission shaft, and will also cause the radial component of stress to concentrate at the connection; the angle problem will increase the error during installation.

[0048] In view of the above problems, the second invention of the utility model discloses a transmission mechanism, such as Figure 3 As shown, it includes a push rod 2, a screw nut and a push rod connector provided in some of the above specific embodiments. The screw nut is sleeved on the push rod 2, and an external thread that can match the screw nut is formed on the outer peripheral surface of the end of the push rod 2 away from the push rod connector, so that the push rod 2 can move along its own axis under the action of the screw nut.

[0049] In the utility model, by directly processing the thread on the push rod 2, the screw nut directly acts on the push rod 2, so that the push rod 2 moves along its own axis, avoiding the problem of thread error caused by the need to process multiple sections of thread. In addition, by replacing the screw rod with the push rod 2, the number of parts is reduced, the processing cost and time are reduced, and the installation process is also reduced, thereby improving the efficiency and accuracy of installation and the efficiency of production. In addition, because the existence of the screw rod is reduced, the cylindricity of the entire assembled shaft is further guaranteed during the later installation, and the stress can be applied to the axis center of the transmission mechanism, so that the radial force cannot be stressed at the connection, thereby ensuring the stability of the overall structure.

[0050] In addition, if Figure 3 As shown, a flat position is also provided at one end of the push rod 2 close to the push rod connector. If the thread is processed in sections, the relative position of the flat position with respect to the limiting column hole on the threaded section will be difficult to ensure; however, in the utility model, the thread is directly processed on the push rod 2, and the position tolerance between the two actual sizes can be controlled within a smaller range, thereby improving the overall structural accuracy.

[0051] Furthermore, as a specific embodiment of the present invention, when the transmission mechanism is applied to the steering device of a vehicle, the two ends of the push rod connector as a connecting member are respectively connected to the push rod 2 and the connecting rod, and the other end of the connecting rod is connected to the wheel, and the two ends of the screw rod are respectively connected to a set of push rods 2 and the connecting rod. The screw rod moves along its own axial direction under the action of the nut. At this time, if there is a problem with the screw rod itself, the wheels at both ends can no longer complete the steering task, and the maintenance cost is high. The transmission mechanism provided by the present invention can control the steering of the wheels on both sides by setting two sets of transmission mechanisms. In this way, if there is a problem with one of the push rods 2, steering can also be performed through the push rod 2 on the other side, and only the damaged side needs to be repaired.

[0052] It should be noted that if Figure 4As shown, the external thread provided on the push rod 2 can be a trapezoidal thread, which has a stronger load-bearing capacity than ordinary threads and can be applied to mechanical applications with high loads and high rigidity. In addition, it has good self-locking properties and is not easy to loosen, has high precision and good wear resistance, and can ensure the cooperation with the screw nut. It can be understood that "away" in the above specific implementation refers to the end of the push rod 2 that is not adjacent to the push rod connector; "own axis" refers to the central axis of the push rod 2 or the screw rod, that is, the axis in the length direction.

[0053] Further, as a specific implementation of the present invention, see Figure 2 and Figure 3 A buffer 5 is further provided between the push rod 2 and the push rod connector. Specifically, the buffer 5 is provided between the end surface of the step 21 formed at one end of the push rod 2 facing the push rod connector and the end surface of the boss 31 formed on the cylindrical connecting column facing the push rod 2. The buffer 5 can be preferably a washer, which can fill the gap between the push rod 2 and the push rod connector, enhance the tightness between them and play a buffering role.

[0054] In addition, as a specific embodiment of the present invention, in order to prevent contaminants from entering the installation gap between the push rod connector and the push rod 2, but to prevent the push rod connector or the push rod 2 from being damaged, thereby reducing the service life of the transmission mechanism, the transmission mechanism also includes a dust cover, which is partially mounted on the push rod connector and partially mounted on the push rod 2, so as to include the installation gap between the push rod connector and the push rod 2. Specifically, the dust cover can be a rubber cover, which has a certain elasticity and can be more firmly mounted on a position that requires dust protection.

[0055] like Figure 3 As shown, as a specific embodiment of the utility model, a sliding bearing 6 is also provided outside the push rod 2, preferably a self-lubricating sliding bearing, which is a bearing that can lubricate the moving parts without the need for external lubricating oil or grease. Because the push rod 2 needs to move along its own axis under the action of the screw nut, the movement can be smoother under the action of the sliding bearing 6, and the self-lubricating sliding bearing has the characteristics of wear resistance, high temperature resistance, corrosion resistance, and is easy to install.

[0056] Furthermore, the third aspect of the present invention provides a rear-wheel steering device, which includes a connecting rod and the transmission mechanism provided by the second aspect.

[0057] Specifically, one end of the push rod connector is directly connected to the push rod 2 through the connecting portion 3, and the other end is connected to the connecting rod through the mounting portion 4. The rear wheel steering device has a simple structure, the push rod connector can be directly connected to the push rod 2, and the push rod 2 is provided with threads and can directly move along its own axis under the action of the screw nut. It can be understood that the screw nut rotates to make the push rod 2 matched therewith move along its own axis, and push the connecting rod connected to the other end of the push rod connector to complete the steering of the wheel. In this way, due to the reduction of parts, the installation efficiency can be improved, and the installation accuracy can also be improved, and further, the cost can be saved.

[0058] A fourth aspect of the present invention provides a vehicle, which is provided with the rear-wheel steering device provided by the third aspect above, and the rear-wheel steering device has a simple structure, high installation accuracy and low production cost.

[0059] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "a specific implementation", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0060] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0061] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0062] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A push rod connector, characterized in that: It comprises a connecting body (1), one end of which is formed with a connecting portion (3) capable of being directly connected to a push rod (2), and the other end of which is formed with a mounting portion (4) capable of being connected to a connecting rod.

2. The push rod connector according to claim 1, characterized in that: The connecting portion (3) is a connecting column, and an external thread capable of being connected to the push rod (2) is provided on the outer peripheral surface of the connecting column.

3. The push rod connector according to claim 2, characterized in that: A boss (31) is formed at one end of the connecting column away from the push rod (2), and the boss (31) can abut against a step (21) inside the push rod (2).

4. The push rod connector according to claim 2 or 3, characterized in that: The mounting portion (4) comprises two mounting feet (41) arranged opposite to one end of the connecting body (1) facing away from the push rod (2), each mounting foot (41) being provided with a mounting hole (42), the axis of the mounting hole (42) being perpendicular to the axis of the connecting column.

5. The push rod connector according to claim 4, characterized in that: A groove portion (11) is provided on a side of the connection body (1) facing away from the push rod (2), and the groove portion (11) is located between two mounting feet (41).

6. The push rod connector according to claim 5, characterized in that: A receiving groove (43) is formed on the outward working surface of the mounting foot (41), and the receiving groove is communicated with the mounting hole (42).

7. A transmission mechanism, characterized in that: It comprises a push rod (2), a screw nut and a push rod connector according to any one of claims 1 to 6, wherein the screw nut is sleeved on the push rod (2), and an external thread matching the screw nut is formed on the outer peripheral surface of one end of the push rod (2) away from the push rod connector, so that the push rod (2) can move along its own axis under the action of the screw nut.

8. The transmission mechanism according to claim 7, characterized in that: A buffer member (5) is provided between an end surface of a step (21) formed at one end of the push rod (2) facing the push rod connector and an end surface of a boss (31) formed on a connecting column facing the push rod (2).

9. The transmission mechanism according to claim 8, characterized in that: The invention also includes a dust cover, wherein a part of the dust cover is sleeved on the push rod connecting head, and another part of the dust cover is sleeved on the push rod (2).

10. The transmission mechanism according to claim 9, characterized in that: One end of the push rod (2) close to the push rod connector is also sleeved with a sliding bearing (6).

11. A rear wheel steering device, characterized in that: It comprises a connecting rod and a transmission mechanism according to any one of claims 7 to 10.

12. The rear wheel steering device according to claim 11, characterized in that: One end of the push rod connector is directly connected to the push rod (2) via a connecting portion (3), and the other end of the push rod connector is connected to the connecting rod via a mounting portion (4).

13. A vehicle, characterized in that: Comprising a rear wheel steering device according to claim 11 or 12.

Images