Split type joint fork structure of automobile steering intermediate shaft

Abstract

The utility model discloses a split type joint fork structure of an automobile steering intermediate shaft, which comprises a main body assembly which comprises a bearing joint fork, a joint fork shaft and a clamp joint fork. The connecting assembly comprises a connector, a first connector, a joint fork shaft groove, a joint fork shaft open groove, a second connector, a joint fork groove and a joint fork open groove. The connector and the joint fork shaft are integrally formed in a cold extrusion mode, the first connector is formed in the middle of the connector, the joint fork shaft groove is formed in the arc-shaped side edge of the connector, the joint fork shaft open groove is formed in the arc-shaped side edge of the connector, the second connector is formed in the middle of the clamp joint fork, the joint fork groove is formed in the middle of the lower end of the clamp joint fork, and the joint fork open groove is formed in the lower end of the clamp joint fork. The problems that when the relative angle of the axis of a bearing hole and the axis of a bolt hole of a special-shaped joint fork is a certain angle, a joint fork blank is high in die opening difficulty and complex in working procedure in the processes of forging, casting, cold extruding, stamping and the like, and even a die cannot be opened are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a split yoke structure of an automobile steering intermediate shaft. Background Art

[0002] In the steering system, the steering intermediate shaft is connected to the steering column and the steering gear through a yoke to transmit the steering torque. There are three common structures of steering intermediate shaft yokes. When the relative angle between the yoke bearing hole and the bolt hole axis is 0°, we call it a 0° yoke; when the relative angle between the yoke bearing hole and the bolt hole axis is 90°, we call it a 90° yoke; when the relative angle between the yoke bearing hole and the bolt hole axis is neither 0° nor 90°, we call it a special-shaped yoke. See the attached Figure 1 , Attachment Figure 2 and attached Figure 3 0° yoke and 90° yoke are the mainstream structures on the current market. The yoke blank can be made by forging, casting, cold extrusion, stamping and other processes, with mature technology and low cost.

[0003] However, it still has the following disadvantages in actual use:

[0004] Some vehicles require special-shaped yokes to ensure the performance of the vehicle steering system and the assembly of the whole vehicle. When the relative angle between the yoke bearing hole and the bolt hole axis of the special-shaped yoke is at a certain angle, the yoke blank is difficult to open the mold, the process is complicated, and the mold cannot even be opened in terms of forging, casting, cold extrusion, stamping and other processes. Utility Model Content

[0005] The purpose of the utility model is to provide a split yoke structure for an automobile steering intermediate shaft, so as to solve the problem raised in the above background technology that some vehicles need to use special-shaped yokes to ensure the performance of the vehicle steering system and the assembly of the whole vehicle. When the relative angle between the yoke bearing hole and the bolt hole axis of the special-shaped yoke is at a certain angle, the yoke blank is difficult to open the mold, the process is complicated, and even the mold cannot be opened, no matter from the forging, casting, cold extrusion, stamping and other processes.

[0006] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0007] The utility model is a split yoke structure of a steering intermediate shaft of an automobile, comprising:

[0008] A main body component, the main body component comprising a bearing yoke, a yoke shaft and a clamp yoke;

[0009] The yoke shaft is connected between the bearing yoke and the clamp yoke;

[0010] A connection assembly, the connection assembly comprising a joint, a first interface, a yoke shaft groove, a yoke shaft slot, a second interface, a yoke groove and a yoke slot;

[0011] The joint and the yoke shaft are formed as one piece by cold extrusion, the first interface is opened in the middle of the joint and penetrates the yoke shaft, the yoke shaft groove is opened on the arc-shaped side of the joint, the yoke shaft slot is opened on the arc-shaped side of the joint and penetrates the yoke shaft groove, the second interface is opened in the middle of the clamp yoke, the yoke groove is opened in the middle of the lower end of the clamp yoke, the yoke slot is opened at the lower end of the clamp yoke and penetrates the yoke groove.

[0012] Furthermore, the connector 20 is plugged into the second interface, the yoke shaft groove corresponds to the yoke groove, and the yoke shaft slot corresponds to the yoke slot.

[0013] Further, the main body assembly also includes a bearing hole and an internal spline;

[0014] There are two bearing holes, which are arranged at one end of the bearing yoke, and the inner spline is universally connected to the middle part of the other end of the bearing yoke.

[0015] Further, the main body assembly also includes external splines and bolt holes;

[0016] The external spline is arranged at one end of the yoke shaft away from the joint, and the bolt hole is arranged on the side of the clamp yoke.

[0017] Further, it also includes an adjustment component;

[0018] The adjustment assembly includes an adjustment shaft and a stud;

[0019] The studs are forged and formed integrally at both ends of the adjusting shaft, and the adjusting shaft is screwed in the middle of the two sets of yoke shafts through the studs.

[0020] Furthermore, the adjustment assembly also includes a positioning hole and a positioning rod;

[0021] The positioning hole is arranged at one end of the side of the yoke shaft, and the positioning rod is screwed in the positioning hole.

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] 1. The utility model, through the setting of the connecting assembly and the setting of the special-shaped joint, corresponds to the second interface, so that the connection between the yoke shaft and the clamp yoke is more stable, and the opened first interface, yoke shaft groove, yoke shaft slot, yoke groove and yoke slot are convenient for the installation and fixation of the bolts.

[0024] 2. The utility model reduces costs by arranging the bearing yoke, yoke shaft and clamp yoke into separate types, and the yoke shaft is a hollow tube. At the same time, the yoke shaft can be a universal part, which is suitable for mass production. The yoke shaft and the clamp yoke are connected more stably by arranging mutually matching joints, interfaces, grooves and slots. The relative angles of the bearing holes on the split bearing yoke and the bolt holes on the clamp yoke can be adjusted at will according to the assembly angles of the three parts without constraints, thereby improving the problem that the blank of the one-piece special-shaped yoke cannot be molded at a certain angle.

[0025] 3. The utility model, through the setting of the adjustment component, rotates the adjustment shaft to drive the stud to move, so that the distance between the two sets of yoke shafts can be adjusted, and the positioning hole and the positioning rod are used to lock the stud to avoid the change of the position of the stud when the adjustment shaft is working. This setting makes the applicability of the yoke shaft more extensive. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 This is a schematic diagram of a common 0° yoke structure;

[0028] Figure 2 This is a schematic diagram of a common 90° yoke structure;

[0029] Figure 3 This is a schematic diagram of the common special-shaped yoke blank structure;

[0030] Figure 4 It is a schematic diagram of the overall structure of the utility model;

[0031] Figure 5 This is a schematic diagram of the bearing yoke structure of the utility model;

[0032] Figure 6 This is a schematic diagram of the clamp yoke structure of the utility model;

[0033] Figure 7 This is a schematic diagram of the yoke shaft structure of the utility model;

[0034] Figure 8 This is a schematic diagram of the adjusting shaft structure of the utility model.

[0035] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0036] 10. Bearing yoke; 11. Bearing hole; 12. Internal spline; 13. Yoke shaft; 14. External spline; 15. Clamp yoke; 16. Bolt hole; 20. Joint; 21. First interface; 22. Yoke shaft groove; 23. Yoke shaft slot; 24. Second interface; 25. Yoke groove; 26. Yoke slot; 30. Adjusting shaft; 31. Stud; 32. Positioning hole; 33. Positioning rod. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0038] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0039] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0040] See also Figure 1-7 As shown, this embodiment is a split yoke structure of a steering intermediate shaft of an automobile, comprising:

[0041] The main body component includes a bearing yoke 10, a yoke shaft 13 and a clamp yoke 15;

[0042] The yoke shaft 13 is connected between the bearing yoke 10 and the clamp yoke 15;

[0043] The yoke shaft 13 plays a connecting role, the bearing yoke 10 is used to connect the transmission shaft and the wheel, and the clamp yoke 15 plays a connecting role;

[0044] A connecting assembly, the connecting assembly comprising a joint 20, a first interface 21, a yoke shaft groove 22, a yoke shaft slot 23, a second interface 24, a yoke groove 25 and a yoke slot 26;

[0045] The joint 20 and the yoke shaft 13 are formed as one piece by cold extrusion, the first interface 21 is provided in the middle of the joint 20 and is connected with the yoke shaft 13, the yoke shaft groove 22 is provided on the arc-shaped side of the joint 20, the yoke shaft slot 23 is provided on the arc-shaped side of the joint 20 and penetrates the yoke shaft groove 22, the second interface 24 is provided in the middle of the clamp yoke 15, the yoke groove 25 is provided in the middle of the lower end of the clamp yoke 15, the yoke slot 26 is provided at the lower end of the clamp yoke 15 and penetrates the yoke groove 25;

[0046] The joint 20 is of a special shape, which is exactly matched with the second interface 24. The first interface 21 can reduce material costs. The yoke shaft groove 22 is matched with the yoke groove 25, and the yoke shaft slot 23 is matched with the yoke slot 26, which is convenient for installing bolts.

[0047] The connector 20 is inserted into the second interface 24, the yoke shaft groove 22 corresponds to the yoke groove 25, and the yoke shaft slot 23 corresponds to the yoke slot 26;

[0048] The main body assembly also includes a bearing hole 11 and an internal spline 12;

[0049] There are two bearing holes 11, which are opened at one end of the bearing yoke 10, and the internal spline 12 is universally connected to the middle of the other end of the bearing yoke 10;

[0050] The bearing hole 11 serves as a connection for connecting the transmission shaft, and the internal spline 12 cooperates with the external spline 14;

[0051] The main body assembly also includes external splines 14 and bolt holes 16;

[0052] The external spline 14 is provided at one end of the yoke shaft 13 away from the joint 20, and the bolt hole 16 is provided at the side of the clamp yoke 15;

[0053] The external spline 14 cooperates with the internal spline 12 to play a connecting role, and the bolt hole 16 is used to fix the bolt.

[0054] Working principle:

[0055] Hold the yoke shaft 13 and insert one end of the external spline 14 into the internal spline 12 on the bearing yoke 10;

[0056] Align the connector 20 at the other end of the yoke shaft 13 with the second interface on the clamp yoke 15 and insert it;

[0057] Align the yoke shaft groove 22 with the yoke groove 25, align the yoke shaft slot 23 with the yoke slot 26, insert the bolt into the bolt hole and tighten it.

[0058] This step makes the connection between the yoke shaft 13 and the clamp yoke 15 more stable, and at the same time makes the assembly angle of the split yoke structure unconstrained.

[0059] See also Figure 7-8 This embodiment is based on the above embodiment 1 and further includes:

[0060] An adjustment assembly, the adjustment assembly includes an adjustment shaft 30 and a stud 31;

[0061] The studs 31 are forged and integrally formed at both ends of the adjusting shaft 30, and the adjusting shaft 30 is screwed in the middle of the two sets of yoke shafts 13 through the studs 31;

[0062] The adjusting shaft 30 plays a connecting role, and the stud 31 plays an adjusting role;

[0063] The adjustment assembly also includes a positioning hole 32 and a positioning rod 33;

[0064] The positioning hole 32 is formed at one end of the side of the yoke shaft 13, and the positioning rod 33 is screwed into the positioning hole 32;

[0065] The positioning hole 32 cooperates with the positioning hole 33 to perform a locking function.

[0066] Working principle:

[0067] Rotating the adjusting shaft 30 drives the stud 31 to rotate and move, so that the distance between the two sets of yoke shafts 13 is adjusted. Cooperating with the positioning hole 32 and the positioning rod 33, the stud 31 is locked to prevent the position of the stud 31 from changing when the adjusting shaft 30 is working.

[0068] This step makes the applicability of the yoke shaft 13 wider.

[0069] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A split yoke structure for an automobile steering intermediate shaft, characterized in that: include: A main body component, the main body component comprising a bearing yoke (10), a yoke shaft (13) and a clamp yoke (15); The yoke shaft (13) is connected between the bearing yoke (10) and the clamp yoke (15); A connection assembly, the connection assembly comprising a joint (20), a first interface (21), a yoke shaft groove (22), a yoke shaft slot (23), a second interface (24), a yoke groove (25), and a yoke slot (26); The joint (20) and the yoke shaft (13) are formed as a whole by cold extrusion, the first interface (21) is provided in the middle of the joint (20) and is connected to the yoke shaft (13), the yoke shaft groove (22) is provided on the arc-shaped side of the joint (20), the yoke shaft slot (23) is provided on the arc-shaped side of the joint (20) and passes through the yoke shaft groove (22), the second interface (24) is provided in the middle of the clamp yoke (15), the yoke groove (25) is provided in the middle of the lower end of the clamp yoke (15), and the yoke slot (26) is provided at the lower end of the clamp yoke (15) and passes through the yoke groove (25).

2. The split yoke structure of the automobile steering intermediate shaft according to claim 1, characterized in that: The joint (20) is plugged into the second interface (24), the yoke shaft groove (22) corresponds to the yoke groove (25), and the yoke shaft slot (23) corresponds to the yoke slot (26).

3. The split yoke structure of the automobile steering intermediate shaft according to claim 1, characterized in that: The main body component also includes a bearing hole (11) and an internal spline (12); There are two bearing holes (11) in total, which are opened at one end of the bearing yoke (10), and the internal spline (12) is universally connected to the middle part of the other end of the bearing yoke (10).

4. The split yoke structure of the automobile steering intermediate shaft according to claim 1, characterized in that: The main body assembly further comprises an external spline (14) and a bolt hole (16); The external spline (14) is provided at one end of the yoke shaft (13) away from the joint (20), and the bolt hole (16) is provided on the side of the clamp yoke (15).

5. The split yoke structure of the automobile steering intermediate shaft according to claim 1, characterized in that: Also included are adjustment components; The adjustment assembly comprises an adjustment shaft (30) and a stud (31); The studs (31) are forged and integrally formed at both ends of the adjustment shaft (30), and the adjustment shaft (30) is screwed to the middle of the two sets of yoke shafts (13) through the studs (31).

6. The split yoke structure of the automobile steering intermediate shaft according to claim 5, characterized in that: The adjustment assembly further comprises a positioning hole (32) and a positioning rod (33); The positioning hole (32) is formed at one end of the side of the yoke shaft (13), and the positioning rod (33) is screwed into the positioning hole (32).

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