Cab overturning limiting assembly and vehicle

Abstract

The invention relates to the technical field of cab turnover mechanisms, and provides a cab turnover limiting assembly and a vehicle, and the cab turnover limiting assembly comprises a first rocker arm and a limiting mechanism. The first end of the first rocker arm is rotatably arranged on the frame, and the second end of the first rocker arm is rotatably connected with the front end of the cab. The limiting mechanism is rotatably arranged on the first rocker arm, and the third end of the limiting mechanism is movably connected with the cab. And under the condition that the cab is in an overturning state relative to the frame, the fourth end of the limiting mechanism abuts against the top of the frame, and the first rocker arm is made to rotate so that the second end can rise to the second height from the first height. According to the cab overturning limiting assembly, the cab can drive the limiting mechanism to rotate relative to the first rocker arm in the overturning process, and through cooperation of the limiting mechanism and the first rocker arm, the height of the front end of the cab is gradually increased in the forward overturning process of the cab, so that mutual interference between a front face shield and a bumper of the cab is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of cab flipping mechanisms, and in particular to a cab flipping limiting assembly and a vehicle. Background Art

[0002] In the related art, when inspecting and maintaining a commercial vehicle (such as a light truck), it is usually necessary to flip the entire cab over in order to inspect and maintain the internal mechanisms such as the engine. When flipping the cab, the vehicle's bumper remains fixed and does not flip with the cab. In order to avoid interference between the front cover of the cab and the bumper, a large gap is usually required between the vehicle's bumper and the cab, which will affect the visual integrity of the front cover and the bumper, and thus affect the shape of the cab. Summary of the invention

[0003] The invention provides a cab rollover limit assembly and a vehicle, which are used to solve the defect in the prior art that a large gap is left between the bumper and the cab of the vehicle, which affects the visual integrity of the front cover and the bumper, and further affects the shape of the cab.

[0004] In a first aspect, the present invention provides a cab rollover limit assembly, wherein the cab can be switched between a flat state and a rollover state relative to a vehicle frame, comprising: a first rocker arm, wherein a first end of the first rocker arm is configured to be rotatably disposed on the vehicle frame, and a second end of the first rocker arm is configured to be rotatably connected to a front end of the cab; a limiting mechanism, rotatably disposed on the first rocker arm, wherein the third end of the limiting mechanism is configured to be movably connected to the cab; When the cab is in the flat state relative to the frame, the limiting mechanism is suspended above the frame and the second end is located at a first height; when the cab is in the flipped state relative to the frame, the fourth end of the limiting mechanism abuts against the top of the frame and causes the first rocker arm to rotate to raise the second end from the first height to a second height.

[0005] The cab rollover limiting assembly according to the present invention further comprises a roller, and the roller is rotatably arranged at the fourth end of the limiting mechanism.

[0006] According to the cab rollover limit assembly of the present invention, it also includes a second rocker arm, one end of the second rocker arm is rotatably connected to the third end of the limit mechanism, and the other end of the second rocker arm is configured to be rotatably connected to the cab.

[0007] The cab rollover limiting assembly according to the present invention further includes a stabilizer bar, wherein the first rocker arm has a plurality of; The plurality of first rocker arms are arranged at intervals along the width direction of the cab; the stabilizer bar is extended along the width direction of the cab and is connected to the plurality of first rocker arms.

[0008] According to the cab rollover limiting assembly of the present invention, there are a plurality of limiting mechanisms, and the plurality of limiting mechanisms are rotatably disposed on the stabilizing bar, and are arranged at intervals along the length direction of the stabilizing bar.

[0009] According to the cab rollover limiting assembly of the present invention, the limiting mechanism is provided with a mounting hole, and the stabilizing bar is rotatably inserted into the mounting hole.

[0010] According to the cab rollover limiting assembly of the present invention, the limiting mechanism comprises a first part and a second part which are detachably connected, and the first part and the second part are joined together to form the mounting hole.

[0011] In a second aspect, the present invention provides a vehicle, comprising: A cab, a frame and a cab rollover limiting assembly as described in any one of the above; The cab is movably disposed above the frame and can be switched between a flat state and a flipped state relative to the frame; The first end of the first rocker arm is rotatably disposed on the vehicle frame, and the second end of the first rocker arm is rotatably connected to the front end of the cab; the third end of the limiting mechanism is movably connected to the cab; When the cab is in the flat state relative to the frame, the cab is horizontally arranged and suspended above the frame; when the cab is in the flipped state relative to the frame, the cab flips forward and is suspended above the frame.

[0012] According to the vehicle of the present invention, the cab comprises a cab body and a suspension bracket; The bottom of the suspension bracket and the second end of the first rocker arm are rotatably connected; the top of the suspension bracket is formed with a supporting surface, and the cab body is installed on the supporting surface.

[0013] According to the vehicle of the present invention, the frame includes a frame body and a mounting bracket, the mounting bracket is mounted on the frame body, and at least a portion of the mounting bracket extends above the frame body so as to be connected to the first end of the first rocker arm.

[0014] The cab flip limit assembly of the present invention is provided with a first rocker arm and a limit mechanism between the cab and the frame, wherein two ends of the first rocker arm are respectively connected to the frame and the front end of the cab, the limit mechanism is rotatably provided on the first rocker arm, and the third end of the limit mechanism is connected to the cab, so that the cab can drive the limit mechanism to rotate relative to the first rocker arm during the flipping process, and through the cooperation of the limit mechanism and the first rocker arm, the height of the front end of the cab is gradually raised during the forward flipping process of the cab, so as to avoid mutual interference between the front cover and the bumper of the cab, and there is no need to reserve a large amount of space between the cab and the bumper when the cab is in a flat state, which is conducive to reducing the gap between the cab and the bumper, thereby improving the visual integrity of the front cover and the bumper, and further improving the aesthetics of the cab shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of a vehicle frame, a cab rollover limiting assembly and a suspension bracket when the cab is in a flat state provided by an embodiment of the present invention.

[0017] Figure 2 It is a schematic diagram of a vehicle frame, a cab rollover limiting assembly and a suspension bracket when the cab is in a rollover state provided by an embodiment of the present invention.

[0018] Figure 3 It is a schematic diagram of a limiting mechanism, a roller and a second rocker arm provided in an embodiment of the present invention.

[0019] Figure 4 It is an exploded view of the limiting mechanism, the roller and the second rocker arm provided in an embodiment of the present invention.

[0020] Figure 5 It is an exploded view of the limiting mechanism provided in an embodiment of the present invention.

[0021] Reference numerals: 1. Cab flip limit assembly; 11. first rocker arm; 111. first end; 112. second end; 12. Limiting mechanism; 121. Third end; 122. Fourth end; 123. Mounting hole; 124. First part; 125. Second part; 13. Roller; 14. Second rocker arm; 15. Stabilizer bar; 2. Frame; 21. Frame body; 22. Mounting bracket; 3. Cab; 31. Suspension bracket. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0023] Combine the following Figure 1-Figure 5 The cab rollover limiting assembly of the present invention is described.

[0024] It should be noted that the directional nouns including “front” and “rear” in the present application are all described on the basis of the vehicle's forward direction as the front.

[0025] like Figure 1 and Figure 2 As shown, the present invention provides a cab flip limit assembly 1, wherein the cab 3 can switch between a flat state and a flip state relative to the frame 2, and the cab flip limit assembly 1 comprises: a first rocker arm 11 and a limit mechanism 12. The first end 111 of the first rocker arm 11 is configured to be rotatably arranged on the frame 2, and the second end 112 of the first rocker arm 11 is configured to be rotatably connected to the front end of the cab 3. The limit mechanism 12 is rotatably arranged on the first rocker arm 11, and the third end 121 of the limit mechanism 12 is configured to be movably connected to the cab 3. When the cab 3 is in a flat state relative to the frame 2, the limit mechanism 12 is suspended above the frame 2, and the second end 112 is located at a first height; when the cab 3 is in a flip state relative to the frame 2, the fourth end 122 of the limit mechanism 12 abuts against the top of the frame 2, and the first rocker arm 11 is rotated to raise the second end 112 from the first height to the second height.

[0026] It is understandable that the flat state of the cab 3 in the present application is the state in which the cab 3 is placed when the driver is usually sitting and driving. The flipped state of the cab 3 is the state in which the cab 3 is flipped toward the front of the vehicle when the interior of the vehicle needs to be inspected.

[0027] In this embodiment, the first end 111 of the first rocker arm 11 is connected to the frame 2, the second end 112 is connected to the front end of the cab 3, and a rotatable limiting mechanism 12 is provided on the first rocker arm 11, and the third end 121 of the limiting mechanism 12 is connected to the cab 3, so that the limiting mechanism 12 and the first rocker arm 11 can cooperate with each other to adjust the position of the front end of the cab 3 during the process of switching the state of the cab 3.

[0028] Specifically, when the cab 3 is in a flat state relative to the frame 2, the limiting mechanism 12 is at a small angle with the horizontal plane and is suspended above the frame 2. The second end 112 of the first rocker arm 11 is stabilized at a first height at a lower position. Accordingly, the front end of the cab 3 can also be maintained at a lower height (such as Figure 1 As shown). During the process of the cab 3 flipping forward, the cab 3 can drive the limiting mechanism 12 to rotate relative to the first rocker arm 11, so that the fourth end 122 of the limiting mechanism 12 away from the cab 3 gradually moves downward, and the third end 121 of the limiting mechanism 12 gradually moves upward. After the fourth end 122 of the limiting mechanism 12 abuts against the top of the frame 3, as the cab 3 continues to flip, the limiting mechanism 12 can use the frame 3 as a support basis to rotate the first rocker arm 11, thereby raising the height of the second end 112, until the cab 3 is flipped to a preset position (i.e., in a flipped state), and the second end 112 reaches a second height (as shown). Figure 2 As shown), the height of the front end of the cab 3 is gradually raised during the forward flipping of the cab 3 to avoid interference between the front cover and the bumper of the cab 3.

[0029] The cab flip limit assembly 1 of the present invention is provided with a first rocker arm 11 and a limit mechanism 12 between the cab 3 and the frame 2, wherein the two ends of the first rocker arm 11 are respectively connected to the frame 2 and the front end of the cab 3, the limit mechanism 12 is rotatably provided on the first rocker arm 11, and the third end 121 of the limit mechanism 12 is connected to the cab 3, so that the cab 3 can drive the limit mechanism 12 to rotate relative to the first rocker arm 11 during the flipping process, and through the cooperation of the limit mechanism 12 and the first rocker arm 11, the height of the front end of the cab 3 is gradually raised during the forward flipping process of the cab 3 to avoid mutual interference between the front cover and the bumper of the cab 3, and there is no need to reserve a large amount of space between the cab 3 and the bumper when the cab 3 is in a flat state, which is conducive to reducing the gap between the cab 3 and the bumper, thereby improving the visual integrity of the front cover and the bumper, and further improving the aesthetics of the shape of the cab 3.

[0030] In some embodiments, Figure 2 and Figure 3 As shown, the cab rollover limiting assembly 1 further includes a roller 13 , and the roller 13 is rotatably disposed on the fourth end 122 of the limiting mechanism 12 .

[0031] In this embodiment, by providing a roller 13 at the fourth end 122 of the limiting mechanism 12, when the fourth end 122 rotates and approaches the top of the frame 2, the roller 13 will first contact the top of the frame 2, and can slide along the top of the frame 2 with the rotation of the limiting mechanism 12, so as to reduce the resistance between the limiting mechanism 12 and the frame 2, thereby making the flipping of the cab 3 smoother, and also reducing the wear between the limiting mechanism 12 and the frame 2 when the cab 3 flips.

[0032] In a specific embodiment, Figure 3 and Figure 4 As shown, the fourth end 122 of the limiting mechanism 12 is provided with a pin shaft hole, and the roller 13 is installed in the pin shaft hole through the pin shaft and the cotter pin, and can rotate around the pin shaft.

[0033] Specifically, in some embodiments, Figure 1 , Figure 2 and Figure 3 As shown, the cab rollover limiting assembly 1 further includes a second rocker arm 14 , one end of which is rotatably connected to the third end 121 of the limiting mechanism 12 , and the other end of the second rocker arm 14 is configured to be rotatably connected to the cab 2 .

[0034] In this embodiment, by connecting the third end 121 of the limiting mechanism 12 and the cab 3 through the second rocker arm 14, when the cab 3 switches from the square state to the flipping state, the cab 3 can pull the third end 121 of the limiting mechanism 12 through the second rocker arm 14, so that the limiting mechanism 12 rotates relative to the first rocker arm 11, so that the fourth end 122 of the limiting mechanism 12 abuts against the top of the frame 2 to prop up the first rocker arm 11, so that the second end 112 of the first rocker arm 11 drives the front end of the cab 3 to lift, or when the cab 3 switches from the flipping state to the square state, the second rocker arm 14 pulls the limiting mechanism 12 to rotate so that the fourth end 122 of the limiting mechanism 12 is separated from the top of the frame 2, so that the first rocker arm 11 falls back, and the front end of the cab 3 falls back to the initial position.

[0035] Specifically, in some embodiments, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, one end of the second rocker arm 14 is rotatably connected to the limiting mechanism 12 via a rotating shaft, and the other end of the second rocker arm 14 is rotatably connected to the cab 3 via another rotating shaft.

[0036] Optionally, in some embodiments, noise reduction gaskets may be installed between the second rocker arm 14 and the limiting mechanism 12, and between the second rocker arm 14 and the cab 3, so as to reduce the noise generated when the mechanism moves.

[0037] In some embodiments, Figure 1 and Figure 2 As shown, the cab rollover limiting assembly 1 further includes a stabilizer bar 15, and there are multiple first rocker arms 11. The multiple first rocker arms 11 are arranged at intervals along the width direction of the cab 3. The stabilizer bar 15 is extended along the width direction of the cab 3 and is connected to the multiple first rocker arms 11.

[0038] In this embodiment, by arranging a plurality of first rocker arms 11 at intervals along the width direction of the cab 3, the plurality of first rocker arms 11 can jointly support the cab 3, so that the force on the cab 3 during the flipping process is more dispersed and uniform, and the flipping process is more stable and smooth. At the same time, by providing a stabilizer bar 15 extending along the width direction of the cab 3 and connected to the plurality of first rocker arms 11, the plurality of first rocker arms 11 can rotate synchronously, further improving the stability of the flipping process of the cab 3.

[0039] In some embodiments, Figure 1 and Figure 2 As shown, there are multiple limiting mechanisms 12 , and the multiple limiting mechanisms 12 are rotatably disposed on the stabilizing rod 15 and are arranged at intervals along the length direction of the stabilizing rod 15 .

[0040] In this embodiment, the stabilizer bar 15 is used to connect multiple first rocker arms 11 on the one hand, and can be used to install multiple limiting mechanisms 12 on the other hand. By arranging the multiple limiting mechanisms 12 at intervals along the length direction of the stabilizer bar 15, during the flipping process of the cab 3, the multiple limiting mechanisms 12 can rotate around the stabilizer bar 15 to abut against the top of the frame 2 at the same time, jointly support the stabilizer bar 15, and drive the multiple first rocker arms 11 to rotate through the stabilizer bar 15 to raise the front end of the cab 3. The force on the stabilizer bar 15 is more dispersed, and the process of driving the first rocker arms 11 to rotate is also more stable.

[0041] In a specific embodiment, Figure 1 and Figure 2 As shown, there are two first rocker arms 11 and two limiting mechanisms 12, the two first rocker arms 11 are connected by a stabilizer bar 15, and the second ends 112 of the two first rocker arms 11 are respectively connected to the positions near the left and right sides of the front end of the cab 2. The two limiting mechanisms 12 are rotatably arranged on the stabilizer bar 15, one limiting mechanism 12 is arranged near the first rocker arm 11 on the right side, and the other limiting mechanism 12 is arranged near the first rocker arm 11 on the left side.

[0042] In some embodiments, Figure 3 and Figure 4As shown, the limiting mechanism 12 is provided with a mounting hole 123, and the stabilizing rod 15 is rotatably inserted in the mounting hole 123. In this embodiment, the limiting mechanism 12 is provided with a mounting hole 123, so that the limiting mechanism 12 can be mounted on the stabilizing rod 15 and can rotate around the stabilizing rod 15.

[0043] Specifically, in some embodiments, Figure 3 , Figure 4 and Figure 5 As shown, the limiting mechanism 12 includes a first portion 124 and a second portion 125 that are detachably connected, and the first portion 124 and the second portion 125 are aligned to form a mounting hole 123 .

[0044] In this embodiment, the limiting mechanism 12 is divided into a first part 124 and a second part 125 that are detachably connected, a part of the hole wall structure of the mounting hole 123 is located in the first part 124, and the other part of the hole wall structure is located in the second part 125, and the first part 124 and the second part 125 are butted against and surrounded with each other so that the two parts of the hole wall structure are butted against to form the mounting hole 123. When the limiting mechanism 12 is installed on the stabilizing bar 15 or removed from the stabilizing bar 15, the first part 124 and the second part 125 can be disassembled and assembled on the stabilizing bar 15, and there is no need to insert the limiting mechanism 12 into the stabilizing bar 15 through the end of the stabilizing bar 15 or take it out from the end of the stabilizing bar 15, so the disassembly and assembly is more convenient.

[0045] Specifically, in some embodiments, a needle bearing is further provided in the mounting hole 123 , and the stabilizing bar 15 is rotatably inserted in the needle bearing.

[0046] Furthermore, the needle bearing includes a first bearing segment and a second bearing segment, wherein the first bearing segment is installed on the first part 124, and the second bearing segment is installed on the second part 125, and when the first part 124 and the second part 125 are butted against each other to form a mounting hole 123, the first bearing segment and the second bearing segment are butted against each other to form a needle bearing.

[0047] In a second aspect, the present invention further provides a vehicle, comprising: a cab 3, a frame 2, and a cab flip limit assembly 1 provided in any of the above embodiments. The cab 3 is movably disposed above the frame 2, and can switch between a flat state and a flip state relative to the frame 2. The first end 111 of the first rocker arm 11 is rotatably disposed on the frame 2, and the second end 112 of the first rocker arm 11 is rotatably connected to the front end of the cab 3. The third end 121 of the limit mechanism 12 is movably connected to the cab 3. When the cab 3 is in a flat state relative to the frame 2, the cab 3 is horizontally disposed and suspended above the frame 2. When the cab 3 is in a flip state relative to the frame 2, the cab 3 flips forward and is suspended above the frame 2.

[0048] The vehicle of the present invention, by adopting the cab rollover limiting assembly 1 of the above embodiment, also has the advantages of the cab rollover limiting assembly 1 of the above embodiment, which will not be described in detail here.

[0049] In the vehicle of this embodiment, the cab 3 can move relative to the frame 2 so as to switch between a flat state and a flip state. In the flat state, the cab 3 is horizontally suspended above the frame 2 for the driver to sit and drive. When the interior of the vehicle needs to be inspected, the cab 3 can be driven by a drive device (usually a hydraulic drive device) to flip toward the front of the vehicle to switch to the flip state, so that the engine and other components in the frame 2 are exposed to the outside for inspection and maintenance.

[0050] Specifically, in some embodiments, Figure 1 and Figure 2 As shown, the cab 3 includes a cab body (not shown) and a suspension bracket 31. The bottom of the suspension bracket 31 is rotatably connected to the second end 112 of the first rocker arm 11. The top of the suspension bracket 31 is formed with a supporting surface, and the cab body is mounted on the supporting surface.

[0051] In this embodiment, the suspension bracket 31 is used to be connected to the first rocker arm 11 and to support the cab body, and to support the cab body when the first rocker arm 11 rotates to adjust the position of the front end of the cab body.

[0052] In some embodiments, Figure 1 and Figure 2 As shown, the frame 2 includes a frame body 21 and a mounting bracket 22 . The mounting bracket 22 is mounted on the frame body 21 . At least a portion of the mounting bracket 22 extends above the frame body 21 so as to be connected to the first end 111 of the first rocker arm 11 .

[0053] In this embodiment, it can be understood that the frame body 21 is generally a hollow frame structure, which can reduce the weight of the entire frame 2 on the one hand, and the space in the frame body 21 can be used to install various components inside the vehicle on the other hand. A mounting bracket 22 is mounted on the frame body 21, and a portion of the mounting bracket 22 extends above the frame body 21. The first end 111 of the first rocker arm 11 is rotatably connected to the portion of the mounting bracket 22, so that the first rocker arm 11 is suspended above the frame body 21 and will not be interfered by the structure of the frame body 21.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cab flip limit assembly, wherein the cab can be switched between a flat state and a flip state relative to a vehicle frame, characterized in that: include: a first rocker arm, wherein a first end of the first rocker arm is configured to be rotatably disposed on the vehicle frame, and a second end of the first rocker arm is configured to be rotatably connected to a front end of the cab; a limiting mechanism, rotatably disposed on the first rocker arm, wherein the third end of the limiting mechanism is configured to be movably connected to the cab; When the cab is in the flat state relative to the frame, the limiting mechanism is suspended above the frame and the second end is located at a first height; when the cab is in the flipped state relative to the frame, the fourth end of the limiting mechanism abuts against the top of the frame and causes the first rocker arm to rotate to raise the second end from the first height to a second height.

2. The cab rollover limiting assembly according to claim 1, characterized in that: It also includes a roller, which is rotatably arranged on the fourth end of the limiting mechanism.

3. The cab rollover limiting assembly according to claim 1, characterized in that: It also includes a second rocker arm, one end of which is rotatably connected to the third end of the limiting mechanism, and the other end of the second rocker arm is configured to be rotatably connected to the cab.

4. The cab rollover limiting assembly according to claim 1, characterized in that: Also included is a stabilizer bar, wherein the first rocker arm has a plurality of; The plurality of first rocker arms are arranged at intervals along the width direction of the cab; the stabilizer bar is extended along the width direction of the cab and is connected to the plurality of first rocker arms.

5. The cab rollover limiting assembly according to claim 4, characterized in that: There are a plurality of the limiting mechanisms, and the plurality of limiting mechanisms are rotatably disposed on the stabilizing rod respectively and are arranged at intervals along the length direction of the stabilizing rod.

6. The cab rollover limiting assembly according to claim 5, characterized in that: The limiting mechanism is provided with a mounting hole, and the stabilizing rod is rotatably inserted into the mounting hole.

7. The cab rollover limiting assembly according to claim 6, characterized in that: The limiting mechanism comprises a first part and a second part which are detachably connected, and the first part and the second part are joined together to form the mounting hole.

8. A vehicle, characterized in that: include: A cab, a frame and a cab rollover limiting assembly as claimed in any one of claims 1 to 7; The cab is movably disposed above the frame and can be switched between a flat state and a flipped state relative to the frame; The first end of the first rocker arm is rotatably disposed on the vehicle frame, and the second end of the first rocker arm is rotatably connected to the front end of the cab; the third end of the limiting mechanism is movably connected to the cab; When the cab is in the flat state relative to the frame, the cab is horizontally arranged and suspended above the frame; when the cab is in the flipped state relative to the frame, the cab flips forward and is suspended above the frame.

9. The vehicle according to claim 8, characterized in that The cab comprises a cab body and a suspension bracket; The bottom of the suspension bracket and the second end of the first rocker arm are rotatably connected; the top of the suspension bracket is formed with a supporting surface, and the cab body is installed on the supporting surface.

10. The vehicle according to claim 8, characterized in that The frame includes a frame body and a mounting bracket, wherein the mounting bracket is mounted on the frame body, and at least a portion of the mounting bracket extends above the frame body so as to be connected to the first end of the first rocker arm.

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