A direction conversion device for speed change rocker arm of passenger car

Abstract

The present invention discloses a direction conversion device for a speed change rocker arm of a passenger car, comprising a bearing support, a stepped shaft and a rocker arm assembly, wherein the rocker arm assembly comprises a rocker arm I and a rocker arm II, a shaft shoulder is arranged in the middle of the stepped shaft, the rocker arm I and the rocker arm II are arranged at a certain angle on both sides of the shaft shoulder, the left side of the shaft shoulder is connected with a rocker arm I and a locking nut, the locking nut is installed on the stepped shaft through a thread; the right side of the shaft shoulder is connected with a rocker arm II and a bearing support, the bearing support is installed on the outside of the rocker arm II, the rocker arm I and the rocker arm II have the same structure, and a bearing is arranged between the rocker arm II and the bearing support. The present invention changes the direction of the speed change rocker arm so that the speed change rocker arm avoids the interference of the frame or the subframe, and uses the spline between the two rockers to change the angle between the two while transmitting a larger torque.

Description

Technical Field

[0001] The invention relates to the technical field of automobile design and manufacturing, and in particular to a direction conversion device for a speed change rocker arm of a passenger car. Background Art

[0002] In existing automobile designs, especially school buses, the engine and gearbox are placed in the front. Because the front-end structure is relatively compact, if the shift flexible shaft cable is directly connected vertically to the shift rocker arm, the shift flexible shaft cable is prone to interfere with the frame or subframe, resulting in a small bending radius of the flexible shaft and increased resistance inside the flexible shaft, making gear shifting difficult and hard, affecting the driving experience and shortening the service life of the flexible shaft.

[0003] In order to avoid interference, the problem of interference between cables and components such as subframes is often encountered during vehicle development. If the flexible shaft cable is not directly connected to the speed rocker arm vertically, it will also cause a significant increase in force and affect the driving experience. Summary of the invention

[0004] The purpose of the present invention is to provide a direction conversion device for a speed change rocker arm of a passenger car, so as to solve the problem of interference between a flexible shaft cable and a vehicle frame or a sub-frame in the prior art.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A passenger car speed change rocker arm direction conversion device of the present invention comprises a bearing support, a stepped shaft and a rocker arm assembly, wherein the rocker arm assembly comprises a rocker arm I and a rocker arm II, a shaft shoulder is arranged in the middle of the stepped shaft, the rocker arm I and the rocker arm II are arranged at both sides of the shaft shoulder at a certain angle, the left side of the shaft shoulder is connected to the rocker arm I and a locking nut, and the locking nut is installed on the outside of the rocker arm I; the right side of the shaft shoulder is connected to the rocker arm II and a bearing support, and the bearing support is installed on the outside of the rocker arm II, the rocker arm I and the rocker arm II have the same structure, and a bearing is arranged between the rocker arm II and the bearing support.

[0007] Furthermore, external splines are respectively provided on both sides of the shaft shoulder, and internal splines that cooperate with the external splines are provided at the big ends of the rocker arm I and the rocker arm II, and the stepped shaft and the rocker arm I and the rocker arm II are connected through splines; a plurality of connecting holes for adjusting different connecting lengths are provided at one end of the rocker arm I and the rocker arm II away from the stepped shaft.

[0008] Furthermore, a washer, a bearing and a shoulder retaining ring are installed between the bearing support and the rocker arm II. The washer is located above the bearing, and the washer is sleeved in the circular groove of the stepped shaft.

[0009] Furthermore, an anti-loosening gasket and a locking nut are installed on the outer side of the rocker arm II, and the locking nut is connected to the thread at one end of the stepped shaft.

[0010] Furthermore, keyways are respectively arranged on both sides of the shaft shoulder, and the big heads of the rocker arm I and the rocker arm II are provided with flat keys that cooperate with the keyway keys, and the rocker arm I and the rocker arm II are connected to the two sides of the step shaft through the flat keys; at the same time, pin holes are respectively arranged on both sides of the shaft shoulder, and the big heads of the rocker arm I and the rocker arm II are provided with pins that cooperate with the pin holes, and the rocker arm I and the rocker arm II are connected to the two sides of the step shaft through the pins.

[0011] Compared with the prior art, the beneficial technical effects of the present invention are:

[0012] A passenger car speed change rocker arm direction conversion device of the present invention comprises a bearing support, a stepped shaft and a rocker arm assembly, wherein the rocker arm assembly comprises a rocker arm I and a rocker arm II, a shaft shoulder is arranged in the middle of the stepped shaft, and the rocker arm I and the rocker arm II are arranged at a certain angle on both sides of the shaft shoulder, so as to facilitate the installation and connection of the next shifting component, the left side of the shaft shoulder is connected with the rocker arm I and a locking nut, and the locking nut is installed on the outside of the rocker arm I to prevent the rocker arm I from axial displacement; the right side of the shaft shoulder is connected with the rocker arm II and a bearing support, and the bearing support is installed on the outside of the rocker arm II, and the rocker arm I and the rocker arm II have the same structure, and a bearing is arranged between the rocker arm II and the bearing support. The present invention changes the direction of the speed change rocker arm so that the speed change rocker arm avoids the interference of the frame or the subframe, and uses the spline between the two rockers to change the angle between the two while transmitting a larger torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below in conjunction with the accompanying drawings.

[0014] Figure 1 An exploded view of the direction conversion device for a speed change rocker arm of a passenger car according to the present invention;

[0015] Figure 2 It is a structural schematic diagram of the bearing seat of the present invention;

[0016] Figure 3 It is a schematic structural diagram of the rocker arm II or rocker arm I of the present invention.

[0017] Explanation of the accompanying reference numerals: 1. locking nut; 2. anti-loosening washer; 3. rocker arm I; 4. stepped shaft; 5. rocker arm II; 6. washer; 7. bearing; 8. shoulder retaining ring; 9. bearing support; 10. external spline; 11. internal spline; 12. shoulder. DETAILED DESCRIPTION

[0018] like Figures 1 to 3As shown, a passenger car speed change rocker arm direction conversion device includes a bearing support 9, a stepped shaft 4 and a rocker arm assembly, the rocker arm assembly includes a rocker arm I3 and a rocker arm II5, a shoulder 12 is provided in the middle of the stepped shaft 4, the rocker arm I3 and the rocker arm II5 are arranged at both sides of the shoulder 12 at a certain angle, the left side of the shoulder 12 is connected to the rocker arm I3 and the locking nut 1, and the locking nut 1 is installed on the outside of the rocker arm I3; to prevent the rocker arm I3 from axial displacement, the right side of the shoulder 12 is connected to the rocker arm II5 and the bearing support 9, and the bearing support 9 is installed on the outside of the rocker arm II5, the rocker arm I3 and the rocker arm II5 have the same structure, and a bearing 7 is provided between the rocker arm II5 and the bearing support 9.

[0019] The stepped shaft 4 and the rocker arm Ⅰ3 and the rocker arm Ⅱ5 have a variety of connection methods. Specifically, external splines 10 are respectively provided on both sides of the shaft shoulder 12, and the big ends of the rocker arm Ⅰ3 and the rocker arm Ⅱ5 are provided with internal splines 11 that cooperate with the external splines 10. The stepped shaft 4 and the rocker arm Ⅰ3 and the rocker arm Ⅱ5 are connected through splines; keyways are respectively provided on both sides of the shaft shoulder 12, and the big ends of the rocker arm Ⅰ3 and the rocker arm Ⅱ5 are provided with flat keys that cooperate with the keyway keys. The rocker arm Ⅰ3 and the rocker arm Ⅱ5 are connected through flat keys. Both sides of the stepped shaft 4; at the same time, pin holes are respectively arranged on both sides of the shaft shoulder 12, and the big heads of the rocker arms Ⅰ3 and Ⅱ5 are provided with pins that cooperate with the pin holes. The rocker arms Ⅰ3 and Ⅱ5 are connected to both sides of the stepped shaft 4 through pins. A variety of different connection methods improve the application scope of the shifting device. A plurality of connection holes for adjusting different connection lengths are opened at the end of the rocker arm Ⅰ3 and the rocker arm Ⅱ5 away from the stepped shaft 4, which is convenient for connecting the next shifting component to meet the use requirements of different vehicle models.

[0020] The rocker arm I3 and the rocker arm II5 have the same structure, a bearing 7 is arranged between the rocker arm II5 and the bearing support 9, a washer 6, a bearing 7 and a shoulder retaining ring 8 are installed between the bearing support 9 and the rocker arm II5, the washer 6 is located above the bearing 7, the washer 6 is sleeved in the circular groove of the stepped shaft 4, and the shoulder retaining ring 8 is arranged to reduce the axial movement of the rocker arm II5. The present invention changes the direction of the speed change rocker arm so that the speed change rocker arm avoids the interference of the frame or the subframe, and uses the spline between the two rocker arms to change the angle between the two while transmitting a larger torque.

[0021] The use process of the present invention is as follows:

[0022] Specifically, after the installation of the rocker arm II5 is completed, the rocker arm II5 is connected to the shift cable, and the installation angle of the rocker arm I3 is adjusted according to different needs and connected to the shift rocker arm; the rocker arm I3 and the rocker arm II5 can adjust the included angle to connect the shift cable and / or the shift rocker arm, which greatly improves the use of the conversion device for different vehicle models. A shoulder is provided between the rocker arm I3 and the rocker arm II5 to prevent axial movement of the rocker arm I3 and the rocker arm II5; an anti-loosening gasket 2 and the locking nut 1 are installed on the outside of the rocker arm II5, and the locking nut 1 is connected to the threaded connection at one end of the stepped shaft 4. The use of the anti-loosening gasket and the locking nut further prevents the rocker arm I3 from axial movement.

[0023] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A direction conversion device for a passenger car speed change rocker arm, characterized in that: The invention comprises a bearing support (9), a stepped shaft (4) and a rocker arm assembly, wherein the rocker arm assembly comprises a rocker arm I (3) and a rocker arm II (5), a shaft shoulder (12) is arranged in the middle of the stepped shaft, the rocker arm I (3) and the rocker arm II (5) are arranged at a certain angle on both sides of the shaft shoulder (12), the left side of the shaft shoulder (12) is connected with the rocker arm I (3) and a locking nut (1), and the locking nut (1) is installed on the stepped shaft (4) through a thread; the right side of the shaft shoulder (12) is connected with the rocker arm II (5) and a bearing support (9), and the bearing support (9) is installed on the outer side of the rocker arm II (5), the rocker arm I (3) and the rocker arm II (5) have the same structure, and a bearing (7) is arranged between the rocker arm II (5) and the bearing support (9); External splines (10) are respectively arranged on both sides of the shaft shoulder (12); the large ends of the rocker arm I (3) and the rocker arm II (5) are provided with internal splines (11) that cooperate with the external splines (10); the stepped shaft (4) and the rocker arm I (3) and the rocker arm II (5) are connected via splines; and a plurality of connection holes for adjusting different connection lengths are provided at the ends of the rocker arm I (3) and the rocker arm II (5) away from the stepped shaft (4); Keyways are respectively arranged on both sides of the shaft shoulder (12); the large ends of the rocker arm I (3) and the rocker arm II (5) are provided with flat keys that cooperate with the keyways; the rocker arm I (3) and the rocker arm II (5) are connected to both sides of the stepped shaft (4) via the flat keys; pin holes are respectively arranged on both sides of the shaft shoulder (12); the large ends of the rocker arm I (3) and the rocker arm II (5) are provided with pins that cooperate with the pin holes; the rocker arm I (3) and the rocker arm II (5) are connected to both sides of the stepped shaft (4) via the pins; A washer (6), a bearing (7) and a shaft shoulder retaining ring (8) are installed between the bearing support (9) and the rocker arm II (5); the washer (6) is located above the bearing (7), and the washer (6) is sleeved in the circular groove of the stepped shaft (4).

2. A passenger car speed change rocker arm direction conversion device according to claim 1, characterized in that: An anti-loosening gasket (2) and a locking nut (1) are installed on the outer side of the rocker arm I (3), and the locking nut (1) is threadedly connected to the other end of the stepped shaft (4).

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