Hanging type stepping device

Abstract

The utility model discloses a hanging type stepping device, relates to the technical field of vehicle parts, the hanging type stepping device comprises a lazy arm, a first pedal, two limit components and a second pedal, the top end of the lazy arm is provided with a fixing component used for being connected with a vehicle, the first pedal is arranged at the bottom end of the lazy arm, one limit component is arranged on one side of the first pedal, and the other limit component is arranged on the other side of the second pedal. The second pedal is arranged below the first pedal and hinged to the first pedal through the two connecting assemblies, and when the second pedal swings through the two connecting assemblies, the two limiting assemblies are matched with the two connecting assemblies to limit the swinging angle of the second pedal. According to the hanging type stepping device, the second pedal and the first pedal are connected through the connecting assemblies, the two connecting assemblies are limited through the two limiting assemblies, the swing angle of the second pedal is limited, the second pedal cannot swing by a large amplitude, and therefore the hanging type stepping device is simple in structure and convenient to use. And damage caused by collision with other surrounding parts is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle parts, in particular to a hanging stepping device. Background Art

[0002] In terms of design and technical characteristics, commercial vehicles are vehicles used to transport people and goods. Commercial vehicles include all trucks and passenger cars with more than nine seats, and are divided into five categories: passenger cars, trucks, semi-trailer tractors, incomplete passenger car vehicles and incomplete truck vehicles. Among them, during the design process of commercial vehicles, due to the high height of the cab from the ground, a step is required for passengers to get on and off the vehicle.

[0003] The prior art is to set a hanging step mechanism at the position of the commercial vehicle cab. However, the pedal and step bracket of the existing hanging step mechanism are connected by using a sleeve, a bushing and a connecting shaft. There will be a matching gap between the sleeve, the bushing and the connecting shaft. The matching gap will increase due to the use of the vehicle, resulting in a large swing of the hanging step forward and backward, and it will also collide with other surrounding parts and cause damage. Utility Model Content

[0004] The embodiment of the utility model provides a hanging stepping device to solve the technical problem in the related art that there is a gap between the pedal of the existing stepping mechanism and the stepping bracket, which causes the stepping mechanism to swing back and forth with a large amplitude and also collides with other surrounding parts to cause damage.

[0005] The utility model provides a hanging stepping device, comprising:

[0006] A boom, wherein a fixing assembly is provided at the top of the boom for connection with a vehicle;

[0007] a first pedal, the first pedal being arranged at the bottom end of the boom;

[0008] Two limit assemblies, one of which is arranged on one side of the first pedal;

[0009] a second pedal, the second pedal being arranged below the first pedal and being hinged to the first pedal through two connecting components;

[0010] When the second pedal swings through the two connecting assemblies, the two limiting assemblies cooperate with the two connecting assemblies to limit the swing angle of the second pedal.

[0011] In some embodiments, each of the limiter components comprises:

[0012] A fixing plate, the fixing plate being arranged at the bottom of the first pedal, one side of the fixing plate correspondingly being provided with a stud, the stud being connected to the first pedal;

[0013] A rubber block, the rubber block is arranged below the fixing sheet;

[0014] A steel sheet is arranged below the rubber block.

[0015] In some embodiments, each of the connection components comprises:

[0016] A first connecting plate, the first connecting plate being disposed between the first pedal and the second pedal;

[0017] A first connecting member, which is disposed at the top of the first connecting plate and is hinged to the first pedal;

[0018] A limit plate, which is disposed at the top of the first connecting member and cooperates with the steel sheet to limit the swing angle of the second pedal;

[0019] A second connecting member is disposed at the bottom end of the first connecting plate and is hinged to the second pedal.

[0020] In some embodiments, the first connecting member includes:

[0021] A first sleeve, the first sleeve being arranged at the top end of the first connecting plate;

[0022] A bushing, the bushing being arranged inside the first sleeve;

[0023] A first connecting shaft passes through the bushing.

[0024] In some embodiments, the second connecting member includes:

[0025] A second sleeve, the second sleeve being arranged at the bottom end of the first connecting plate, and a locking hole being arranged in the middle of the second sleeve;

[0026] A second connecting shaft, the second connecting shaft passes through the second shaft sleeve, and a plug hole is provided in the middle of the second connecting shaft;

[0027] A hairpin pin is used to penetrate through the locking hole and be inserted into the insertion hole to fix the second connecting shaft.

[0028] In some embodiments, two connecting rings are correspondingly provided on one side of the second pedal, the circumferential sizes of the two connecting rings match the second connecting shaft, and one second connecting shaft passes through the two connecting rings and is hinged to the second pedal.

[0029] In some embodiments, two support plates are provided at the bottom end of the first pedal in the horizontal direction, a through hole is correspondingly provided on one side of each of the support plates, and the first connecting shaft passes through the through hole and is hinged to the first pedal.

[0030] In some embodiments, a fixing plate is further provided at the bottom end of the first pedal, one end of the fixing plate is connected to the bottom end of the suspension arm, and the other end of the fixing plate is connected to the bottom end of the first pedal.

[0031] In some embodiments, the fixing assembly includes:

[0032] A second connecting plate, the second connecting plate is arranged at the top end of the boom, and a first bolt hole is arranged at each top corner of the second connecting plate;

[0033] Two pads, one of the pads is disposed on one side of the second connecting plate, and both ends of each pad are provided with second bolt holes matching the first bolt holes;

[0034] A plurality of reinforcing ribs are provided on the outer periphery of the top end of the boom along the circumferential direction and connected to the second connecting plate.

[0035] In some embodiments, the suspension arm, the first pedal, the limiting assembly, the second pedal and the connecting assembly are all made of steel.

[0036] The beneficial effects brought by the technical solution provided by the utility model include:

[0037] The embodiment of the utility model provides a hanging stepping device, including a hanging arm, a first pedal, two limiting assemblies and a second pedal, the top of the hanging arm is provided with a fixing assembly for connecting with a vehicle, the first pedal is arranged at the bottom of the hanging arm, a limiting assembly is arranged at one side of the first pedal, the second pedal is arranged below the first pedal and is hinged to the first pedal through two connecting assemblies, when the second pedal swings through the two connecting assemblies, the two limiting assemblies cooperate with the two connecting assemblies to limit the swing angle of the second pedal. The hanging stepping device of the utility model connects the second pedal with the first pedal through the connecting assembly, and limits the two connecting assemblies through the two limiting assemblies, limiting the swing angle of the second pedal, so that the second pedal will not swing to a large extent, and will not collide with other surrounding parts to cause damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 A schematic diagram of the structure of a hanging stepping device provided in an embodiment of the utility model;

[0040] Figure 2 A schematic diagram of the structure of a first pedal and a second pedal provided in an embodiment of the utility model;

[0041] Figure 3 A schematic diagram of the structure of a connection assembly provided in an embodiment of the utility model;

[0042] Figure 4 A schematic diagram of the structure of a fixing assembly provided in an embodiment of the utility model;

[0043] Reference numerals:

[0044] 1. boom; 11. fixing assembly; 111. second connecting plate; 1111. first bolt hole; 112. backing plate; 1121. second bolt hole; 113. reinforcing rib;

[0045] 2. first pedal; 21. support plate; 211. through hole; 22. fixing plate;

[0046] 3. Limiting assembly; 31. Fixing plate; 311. Stud; 32. Rubber block; 33. Steel sheet;

[0047] 4. second pedal; 41. connecting ring;

[0048] 5. Connecting assembly; 51. First connecting plate; 52. First connecting member; 521. First bushing; 522. Bushing; 523. First connecting shaft; 53. Limiting plate; 54. Second connecting member; 541. Second bushing; 5411. Locking hole; 542. Second connecting shaft; 5421. Socket; 543. Hairpin pin. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0050] The embodiment of the utility model provides a hanging stepping device, which can solve the technical problem in the related technology that there is a gap between the pedal of the existing stepping mechanism and the stepping bracket, which causes the stepping mechanism to swing back and forth with a large amplitude and also collides with other surrounding parts to cause damage.

[0051] Figure 1A hanging stepping device is provided in an embodiment of the utility model, comprising: a hanging arm 1, a first pedal 2, two limit assemblies 3 and a second pedal 4. A fixing assembly 11 is provided at the top of the hanging arm 1 for connecting with a vehicle. The first pedal 2 is arranged at the bottom of the hanging arm 1. One of the limit assemblies 3 is arranged on one side of the first pedal 2. The second pedal 4 is arranged below the first pedal 2 and is hinged to the first pedal 2 through two connecting assemblies 5. When the second pedal 4 swings through the two connecting assemblies 5, the two limit assemblies 3 cooperate with the two connecting assemblies 5 to limit the swing angle of the second pedal 4.

[0052] The hanging step device of the utility model embodiment is provided with a hanging arm, a first pedal, two limit assemblies and a second pedal, the top of the hanging arm is provided with a fixing assembly for connecting with a vehicle, the first pedal is arranged at the bottom end of the hanging arm, one limit assembly is arranged at one side of the first pedal, the second pedal is arranged below the first pedal and is hinged to the first pedal through two connecting assemblies, the limit assembly forms a stopper between the connecting assembly and the first pedal, when the second pedal swings through the two connecting assemblies, the limit assembly can form a block in the left and right directions of the swing of the connecting assembly, that is, when the connecting assembly swings in either direction, the limit plate on the connecting assembly will swing with the connecting assembly and collide with the steel sheet of the limit assembly when the swing angle is large, the steel sheet forms a block at the left and right ends of the limit plate, limits the swing angle of the connecting assembly, and further limits the swing angle of the second pedal, so that the second pedal will not swing significantly, and will not collide with other surrounding parts to cause damage.

[0053] As an optional implementation, in a utility model implementation, see Figure 2 and Figure 3As shown, each of the limiting components 3 includes: a fixing plate 31, a rubber block 32 and a steel plate 33. The fixing plate 31 is arranged at the bottom of the first pedal 2. A stud 311 is correspondingly arranged on one side of the fixing plate 31. The stud 311 is connected to the first pedal 2. The rubber block 32 is arranged below the fixing plate 31. The steel plate 33 is arranged below the rubber block 32. The fixing plate 31 is fixedly connected to the first pedal 2 through the stud 311. When the second pedal 4 swings through the two connecting components 5, the steel plate 33 forms a stopper above the connecting component 5. The steel plate 33 forms a block in the left and right directions of the swing of the connecting component 5, that is, the connecting component 5 When swinging in either direction, it will collide with the steel sheet 33. The steel sheet 33 blocks the connecting component 5 so that it cannot swing greatly and can only swing slightly left and right within the allowed range, thereby limiting the swing angle of the connecting component 5, and further limiting the swing angle of the second pedal 4. A rubber block 32 is arranged between the fixing plate 31 and the steel sheet 33 to reduce the sound when the connecting component 5 collides with the steel sheet 33 and buffer the impact force of the collision. At the same time, when the limiting component 3 needs to be replaced after long-term use, the stud 311 can be directly unscrewed, and the fixing plate 31, the rubber block 32 and the steel sheet 33 can be disassembled for separate replacement, thereby improving its maintainability and disassembly convenience.

[0054] As an optional implementation, in a utility model implementation, see Figure 2 As shown, each of the connecting components 5 includes: a first connecting plate 51, a first connecting member 52, a limiting plate 53 and a second connecting member 54, wherein the first connecting plate 51 is arranged between the first pedal 2 and the second pedal 4, the first connecting member 52 is arranged at the top of the first connecting plate 51 and is hinged to the first pedal 2, the limiting plate 53 is arranged at the top of the first connecting member 52 and cooperates with the steel sheet 33 to limit the swing angle of the second pedal 4, the second connecting member 54 is arranged at the bottom of the first connecting plate 51 and is hinged to the second pedal 4, and the second pedal 4 is connected to the first pedal 4 through the first connecting plate 51 The first connecting plate 51 is connected to the first pedal 2 through the first connecting member 52, and the bottom end of the first connecting plate 51 is hinged to the second pedal 4 through the second connecting member 54. The limiting plate 53 is rectangular and extends to the outside of the first connecting member 52. When the first connecting plate 51 swings left and right, the limiting plate 53 swings with the first connecting plate 51 and collides with the steel sheet 33. The steel sheet 33 forms obstructions at the left and right ends of the limiting plate 53, thereby limiting the swing angle of the first connecting plate 51 and further limiting the swing angle of the second pedal 4.

[0055] As an optional implementation, in a utility model implementation, see Figure 3 As shown, the first connecting member 52 includes: a first sleeve 521, a bushing 522 and a first connecting shaft 523, the first sleeve 521 is arranged at the top of the first connecting plate 51, the bushing 522 is arranged inside the first sleeve 521, the first connecting shaft 523 passes through the sleeve 522, the first sleeve 521 is fixed to the top of the first connecting plate 51 to provide support for the first connecting member 52 and protect the first connecting shaft 523, the sleeve 522 plays the role of sealing and wear protection, wherein the sleeve 522 and the first sleeve 521 have an interference fit, the sleeve 522 and the first connecting shaft 523 have a clearance fit, the first connecting shaft 523 passes through the first sleeve 521 and the sleeve 522 to hinge the first connecting plate 51 with the first pedal 2.

[0056] As an optional implementation, in a utility model implementation, see Figure 3 As shown, the second connecting member 54 includes: a second sleeve 541, a second connecting shaft 542 and a hairpin pin 543. The second sleeve 541 is arranged at the bottom end of the first connecting plate 51. A locking hole 5411 is provided in the middle of the second sleeve 541. The second connecting shaft 542 passes through the second sleeve 541. A plug hole 5421 is provided in the middle of the second connecting shaft 542. The hairpin pin 543 is used to pass through the locking hole 5411 and insert into the plug hole 5421 to fix the second connecting shaft 542. The bushing 541 is fixed to the bottom end of the first connecting plate 51 to provide support for the second connecting shaft 542 and protect the second connecting shaft 542. When the second connecting shaft 542 passes through the second bushing 541 and is hinged to the second pedal 4, the hairpin pin 543 is inserted into the locking hole 5411 and the plug hole 5421 to fix the current position of the second connecting shaft 542, so that the second connecting shaft 542 will not fall off from the second bushing 541 and the rotation of the second connecting shaft 542 is limited.

[0057] As an optional implementation, in a utility model implementation, see Figure 3 As shown, two connecting rings 41 are correspondingly provided on one side of the second pedal 4, and the circumferential size of the two connecting rings 41 matches the second connecting shaft 542. One second connecting shaft 542 passes through the two connecting rings 41 and is hinged to the second pedal 4. The two connecting rings 41 are fixed to one side of the second pedal 4. The second connecting shaft 542 passes through the second shaft sleeve 541, and one end of the second connecting shaft 542 passes through one connecting ring 41 and is rotatably connected thereto. The second pedal 4 is connected to the first connecting plate 51 through the second connecting shaft 542 and the two connecting rings 41.

[0058] As an optional implementation, in a utility model implementation, see Figure 2 As shown, two support plates 21 are provided at the bottom end of the first pedal 2 in the horizontal direction, and a through hole 211 is correspondingly provided on one side of each support plate 21. The first connecting shaft 523 passes through the through hole 211 and is hinged to the first pedal 2. The suspension arm 1 is Z-shaped, and the bottom end of the suspension arm 1 extends outward in the horizontal direction. The two support plates 21 are fixed above the extended end of the suspension arm 1, and the first pedal 2 is fixed above the two support plates 21. The two support plates 21 are used to support and fix the first pedal 2. When the first connecting shaft 523 passes through the first shaft sleeve 521 and the bushing 522, one end of the first connecting shaft 523 passes through one of the through holes 211, and the first connecting shaft 523 is fixed to the support plate 21 by tightening the bolts at both ends of the first connecting shaft 523, thereby connecting the first connecting plate 51 to the first pedal 2, and further connecting the second pedal 4 to the first pedal 2.

[0059] As an optional implementation, in a utility model implementation, see Figure 2 As shown, a fixing plate 22 is also provided at the bottom end of the first pedal 2, one end of the fixing plate 22 is connected to the bottom end of the boom 1, and the other end is connected to the bottom end of the first pedal 2. The fixing plate 22 is an inverted triangle, with its top end fixedly connected to the first pedal 2, and its bottom end fixedly connected to the bottom end of the boom 1, for supporting and fixing the first pedal 2, so that the first pedal 2 is more firmly connected to the boom 1.

[0060] As an optional implementation, in a utility model implementation, see Figure 4As shown, the fixing assembly 11 includes: a second connecting plate 111, two pads 112 and a plurality of reinforcing ribs 113, the second connecting plate 111 is arranged at the top of the boom 1, a first bolt hole 1111 is provided at each vertex of the second connecting plate 111, one pad 112 is correspondingly arranged on one side of the second connecting plate 111, and both ends of each pad 112 are provided with second bolt holes 1121 matching the first bolt holes 1111, a plurality of reinforcing ribs 113 are arranged on the outer periphery of the top of the boom 1 along the circumferential direction and connected to the second connecting plate 111, the second connecting plate 111 is fixedly connected to the top of the boom 1, and a plurality of bolts are correspondingly passed through each of the first bolt holes 1111 and the second bolt holes 1121 from The second connecting plate 111 is fixed to the vehicle, and then the boom 1 is fixed to the vehicle. At the same time, since the machined surface of the second connecting plate 111 is not completely smooth and regular, the two pads 112 can fill its irregularities, strengthen the sealing of the connection between the second connecting plate 111 and the vehicle, prevent the surface of the second connecting plate 111 from being worn, and extend its service life. Since the bottom end of the boom 1 has more and heavier components, the connection surface between the second connecting plate 111 and the top of the boom 1 can withstand a limited load. A plurality of reinforcing ribs 113 are provided on the common vertical plane between the second connecting plate 111 and the top of the boom 1, which can increase the strength of the joint surface between the two and the stability of the connection, thereby extending the service life of the utility model.

[0061] As an optional implementation, in a utility model implementation, see Figure 1 As shown, the boom 1, the first pedal 2, the limit assembly 3, the second pedal 4 and the connecting assembly 5 are all made of steel. The steel has good toughness and plasticity, uniform material, high structural reliability, weldability, heat resistance and good assembly performance.

[0062] In the description of the present utility model, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0063] It should be noted that, in the present utility model, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0064] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A hanging stepping device, characterized in that: include: A boom (1), wherein a fixing assembly (11) is provided at the top of the boom (1) for connecting with a vehicle; A first pedal (2), wherein the first pedal (2) is arranged at the bottom end of the boom (1); Two limiting components (3), one of the limiting components (3) being arranged on one side of the first pedal (2); A second pedal (4), the second pedal (4) being arranged below the first pedal (2) and being hingedly connected to the first pedal (2) via two connecting components (5); When the second pedal (4) swings through the two connecting assemblies (5), the two limiting assemblies (3) cooperate with the two connecting assemblies (5) to limit the swing angle of the second pedal (4).

2. The hanging stepping device according to claim 1, characterized in that: Each of the limiting components (3) comprises: A fixing plate (31), the fixing plate (31) being arranged at the bottom of the first pedal (2), a stud (311) being arranged on one side of the fixing plate (31), the stud (311) being connected to the first pedal (2); A rubber block (32), the rubber block (32) being arranged below the fixing plate (31); A steel sheet (33), wherein the steel sheet (33) is arranged below the rubber block (32).

3. The hanging stepping device according to claim 2, characterized in that: Each of the connection components (5) comprises: A first connecting plate (51), the first connecting plate (51) being arranged between the first pedal (2) and the second pedal (4); A first connecting member (52), the first connecting member (52) being arranged at the top end of the first connecting plate (51) and being hinged to the first pedal (2); a limiting plate (53), the limiting plate (53) being arranged at the top end of the first connecting member (52) and cooperating with the steel sheet (33) to limit the swing angle of the second pedal (4); A second connecting member (54), the second connecting member (54) is arranged at the bottom end of the first connecting plate (51) and is hinged to the second pedal (4).

4. The hanging stepping device according to claim 3, characterized in that: The first connecting member (52) comprises: A first shaft sleeve (521), wherein the first shaft sleeve (521) is disposed at the top end of the first connecting plate (51); A bushing (522), wherein the bushing (522) is arranged inside the first shaft sleeve (521); A first connecting shaft (523), wherein the first connecting shaft (523) passes through the bushing (522).

5. The hanging stepping device according to claim 4, characterized in that: The second connecting member (54) comprises: A second shaft sleeve (541), the second shaft sleeve (541) being arranged at the bottom end of the first connecting plate (51), and a locking hole (5411) being arranged in the middle of the second shaft sleeve (541); A second connecting shaft (542), wherein the second connecting shaft (542) passes through the second shaft sleeve (541), and a plug hole (5421) is provided in the middle of the second connecting shaft (542); A hairpin pin (543), the hairpin pin (543) is used to pass through the locking hole (5411) and be inserted into the insertion hole (5421) to fix the second connecting shaft (542).

6. The hanging stepping device according to claim 5, characterized in that: Two connecting rings (41) are correspondingly provided on one side of the second pedal (4), the circumferential dimensions of the two connecting rings (41) match the second connecting shaft (542), and one second connecting shaft (542) passes through the two connecting rings (41) and is hinged to the second pedal (4).

7. The hanging stepping device according to claim 4, characterized in that: Two support plates (21) are provided at the bottom end of the first pedal (2) in the horizontal direction, and a through hole (211) is correspondingly provided on one side of each support plate (21), and the first connecting shaft (523) passes through the through hole (211) and is hingedly connected to the first pedal (2).

8. The hanging stepping device according to claim 1, characterized in that: A fixing plate (22) is also provided at the bottom end of the first pedal (2); one end of the fixing plate (22) is connected to the bottom end of the suspension arm (1), and the other end is connected to the bottom end of the first pedal (2).

9. The hanging stepping device according to claim 1, characterized in that: The fixing assembly (11) comprises: A second connecting plate (111), the second connecting plate (111) being arranged at the top end of the boom (1), and a first bolt hole (1111) being arranged at each top corner of the second connecting plate (111); Two pads (112), one pad (112) being arranged on one side of the second connecting plate (111), and each pad (112) having two ends provided with second bolt holes (1121) matching the first bolt holes (1111); A plurality of reinforcing ribs (113) are provided on the outer periphery of the top end of the boom (1) along the circumferential direction and are connected to the second connecting plate (111).

10. The hanging stepping device according to claim 1, characterized in that: The suspension arm (1), the first pedal (2), the limit assembly (3), the second pedal (4) and the connection assembly (5) are all made of steel.

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