Brake pedal structure and vehicle

Abstract

The utility model relates to the technical field of vehicles, and particularly discloses a brake pedal structure and a vehicle, and the brake pedal structure comprises a brake pedal arm, a vacuum booster push rod and a connecting piece. Wherein the brake pedal arm comprises a bias arm and a straight arm which are connected with each other. The vacuum booster push rod is located on one side of the straight arm and is parallel to the straight arm, so that the center of the vacuum booster push rod and the center of the straight arm are not located on the same plane, the brake pedal arm is arranged in an offset mode, and the span of the brake pedal arm can be effectively reduced; the minimum distance d between the straight arm and the vacuum booster push rod is limited within the range, the span of the brake pedal arm is further reduced under the condition that the arrangement space of a cab and a front cabin is guaranteed, and the situation that in the prior art, due to the fact that the span of the brake pedal arm is large, the structure strength of the brake pedal arm is guaranteed is avoided. The material of the brake pedal arm needs to be improved or the thickness of the brake pedal arm needs to be increased, so that the cost and the weight are increased.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a brake pedal structure and a vehicle. Background Art

[0002] The connection method between the brake pedal arm and the vacuum booster in the prior art is to connect the brake pedal arm and the vacuum booster by means of a push rod U-shaped fork. This method requires the brake pedal arm and the vacuum booster to be in the same plane. However, due to the small space for the vehicle cab and the front engine compartment, in order to ensure a reasonable space layout, the span of the brake pedal arm is usually larger. In order to compensate for the insufficient strength caused by the larger span of the brake pedal arm, the manufacturing material of the brake pedal arm can only be improved or the thickness can be increased, which will lead to an increase in cost and weight. Utility Model Content

[0003] The utility model aims to provide a brake pedal structure and a vehicle to solve the problem in the prior art that the span of the brake pedal arm is large, resulting in increased cost and weight of the brake pedal arm.

[0004] On the one hand, the utility model provides a brake pedal structure, which includes: a brake pedal arm, the brake pedal arm includes an offset arm and a straight arm connected to each other, and the offset arm can be connected to the pedal pad; a vacuum booster push rod, the vacuum booster push rod is located on one side of the straight arm and parallel to the straight arm; a connecting piece, the connecting piece is passed through the straight arm and the vacuum booster push rod to connect the brake pedal arm with the vacuum booster push rod; wherein, the minimum distance between the straight arm and the vacuum booster push rod is d, 6.5mm≤d≤7.5mm.

[0005] As a preferred technical solution for the brake pedal structure, the offset arm includes an offset section and a connecting section that are connected to each other. The offset section is connected to the straight arm and has an angle with the straight arm. The vacuum booster push rod is located on the side of the straight arm away from the offset section, and the connecting section can be connected to the pedal pad.

[0006] As a preferred technical solution for the brake pedal structure, the straight arm has a first mounting hole, the vacuum booster push rod has a second mounting hole, and the connecting member passes through the first mounting hole and the second mounting hole in sequence to connect the straight arm to the vacuum booster push rod.

[0007] As a preferred technical solution for the brake pedal structure, the diameter of the first mounting hole is R, 13mm≤R≤15mm.

[0008] As a preferred technical solution for the brake pedal structure, the connecting part includes a connecting pin and a locking pin. The connecting pin passes through the straight arm and the vacuum booster push rod in sequence along the vertical direction of the straight arm, and the straight arm and the vacuum booster push rod are fixed by the locking pin.

[0009] As a preferred technical solution for the brake pedal structure, the connecting pin includes a first cylindrical section, a second cylindrical section and a third cylindrical section connected in sequence, the diameter of the first cylindrical section is larger than the diameter of the second cylindrical section, the diameter of the second cylindrical section is larger than the diameter of the third cylindrical section, the straight arm is sleeved on the second cylindrical section and abuts against the end face of the first cylindrical section, the vacuum booster push rod is sleeved on the third cylindrical section, and the locking pin passes through the third cylindrical section to cooperate with the vacuum booster push rod stop.

[0010] As a preferred technical solution for the brake pedal structure, the third cylindrical segment has an assembly hole, the assembly hole is arranged to penetrate the third cylindrical segment in a radial direction, and the locking pin passes through the assembly hole.

[0011] As a preferred technical solution for the brake pedal structure, the connecting part also includes an annular bushing, which is sleeved on the third cylindrical segment and has an interference fit with the third cylindrical segment. The vacuum booster push rod is sleeved on the annular bushing, and the annular bushing and the end surface of the vacuum booster push rod facing away from the straight arm are abutted, and the annular bushing can cooperate with the locking pin stop.

[0012] As a preferred technical solution for the brake pedal structure, the brake pedal arm is made of alloy steel.

[0013] On the other hand, the utility model provides a vehicle, including a vehicle body, a pedal pad and a brake pedal structure in any of the above schemes, wherein the offset arm of the brake pedal structure is connected to the pedal pad, and the straight arm of the brake pedal structure is installed on the vehicle body.

[0014] The beneficial effects of the utility model are:

[0015] The present utility model provides a brake pedal structure, which includes a brake pedal arm, a vacuum booster push rod, and a connecting member. Among them, the brake pedal arm includes a biased arm and a straight arm that are connected to each other. With the brake pedal structure of the present utility model, the vacuum booster push rod is located on one side of the straight arm and is parallel to the straight arm. In this way, the centers of the vacuum booster push rod and the straight arm are not in the same plane, and the brake pedal arm is arranged in a biased manner, which can effectively reduce the span of the brake pedal arm; at the same time, the minimum distance d between the straight arm and the vacuum booster push rod is limited within the above range, further reducing the span of the brake pedal arm while ensuring the layout space of the cab and the front engine compartment, avoiding the problem in the prior art that due to the large span of the brake pedal arm, in order to ensure the structural strength of the brake pedal arm, it is necessary to improve the material or increase the thickness of the brake pedal arm, thereby resulting in an increase in cost and weight; and, by arranging the connecting member to pass through the straight arm and the vacuum booster push rod, the force of the brake pedal arm can be transmitted to the vacuum booster push rod through the connecting member, optimizing the force-bearing condition of the brake pedal arm. Using the brake pedal structure of the present utility model effectively solves the problem in the prior art that the large span of the brake pedal arm leads to an increase in the cost and weight of the brake pedal arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the brake pedal structure in an embodiment of the present utility model;

[0017] Figure 2 is Figure 1 a partial enlarged view in

[0018] Figure 3 is a schematic structural diagram of the brake pedal arm in an embodiment of the present utility model;

[0019] Figure 4 is a schematic structural diagram of the connecting member in an embodiment of the present utility model.

[0020] In the figure:

[0021] 1. Brake pedal arm; 11. Biased arm; 111. Biased section; 112. Connection section; 12. Straight arm; 121. First mounting hole;

[0022] 2. Vacuum booster push rod;

[0023] 3. Connecting member; 31. Connecting pin; 311. First cylindrical section; 312. Second cylindrical section; 313. Third cylindrical section; 3131. Assembly hole; 32. Annular bushing;

[0024] 4. Pedal pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is 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 orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the first feature has a lower horizontal height than the second feature.

[0027] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected" and "coupled" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside 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 specific circumstances.

[0028] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0029] Such as Figures 1 to 4As shown in the figure, this embodiment provides a brake pedal structure, which includes a brake pedal arm 1, a vacuum booster push rod 2, and a connecting member 3. Among them, the brake pedal arm 1 includes a bias arm 11 and a straight arm 12 that are connected to each other. The bias arm 11 can be connected to the pedal pad 4; the vacuum booster push rod 2 is located on one side of the straight arm 12 and is parallel to the straight arm 12; the connecting member 3 passes through the straight arm 12 and the vacuum booster push rod 2 to connect the brake pedal arm 1 and the vacuum booster push rod 2; where the minimum distance between the straight arm 12 and the vacuum booster push rod 2 is d, and 6.5mm ≤ d ≤ 7.5mm.

[0030] With the brake pedal structure of the present utility model, the vacuum booster push rod 2 is located on one side of the straight arm 12 and is parallel to the straight arm 12. With such a setting, the centers of the vacuum booster push rod 2 and the straight arm 12 are not in the same plane, and the brake pedal arm 1 adopts an offset arrangement method, which can effectively reduce the span of the brake pedal arm 1; at the same time, the minimum distance d between the straight arm 12 and the vacuum booster push rod 2 is limited within the above range. While ensuring the layout space of the cab and the front engine compartment, the span of the brake pedal arm 1 is further reduced, avoiding the problem in the prior art that due to the large span of the brake pedal arm 1, in order to ensure the structural strength of the brake pedal arm 1, it is necessary to improve the material or increase the thickness of the brake pedal arm 1, thereby resulting in an increase in cost and weight; and, by setting the connecting member 3 to pass through the straight arm 12 and the vacuum booster push rod 2, the force of the brake pedal arm 1 can be transmitted to the vacuum booster push rod 2 through the connecting member 3, optimizing the force-bearing situation of the brake pedal arm 1. Using the brake pedal structure of the present utility model effectively solves the problem in the prior art that the large span of the brake pedal arm 1 leads to an increase in the cost and weight of the brake pedal arm 1.

[0031] Specifically, the minimum distance between the straight arm 12 and the vacuum booster push rod 2 can be selected according to the actual situation. Among them, it can be selected as 6.5mm, 6.7mm, 6.9mm, 7.1mm, 7.3mm or 7.5mm, etc. The above values can all achieve the effect of reducing the span of the brake pedal arm 1.

[0032] In some embodiments, the biasing arm 11 includes a biasing section 111 and a connecting section 112 which are connected to each other. Among them, the biasing section 111 is connected to the straight arm 12 and has an angle with the straight arm 12, and the vacuum booster push rod 2 is located on the side of the straight arm 12 away from the biasing section 111. It should be noted that the distance between the connecting section 112 and the straight arm 12 can represent the span size of the brake pedal arm 1. With such a setting, the vacuum booster push rod 2 is arranged on the side of the straight arm 12 away from the biasing section 111, so that the span of the brake pedal arm 1 is reduced compared with the prior art in which the brake pedal arm is connected to the vacuum booster by means of a push rod U-shaped fork, thereby reducing the cost and weight of the brake pedal arm 1.

[0033] In this solution, the connecting section 112 can be connected to the pedal pad 4, and the pedal pad 4 can be stepped on by the operator.

[0034] In this embodiment, the straight arm 12 has a first mounting hole 121, and the vacuum booster push rod 2 has a second mounting hole. The connecting member 3 is sequentially passed through the first mounting hole 121 and the second mounting hole, so as to achieve the purpose of connecting the straight arm 12 and the vacuum booster push rod 2.

[0035] Specifically, the aperture of the first mounting hole 121 is R, and 13mm ≤ R ≤ 15mm. Limiting the value of the diameter R of the first mounting hole 121 within the above range can ensure the connection strength between the straight arm 12 and the vacuum booster push rod 2 while selecting a suitable aperture according to the actual situation. Among them, the aperture R of the first mounting hole 121 can be selected as 13mm, 14mm or 15mm, etc.

[0036] As Figure 1 、 Figure 2 and Figure 4 shown, in this embodiment, the connecting member 3 includes a connecting pin 31 and a locking pin. Among them, the connecting pin 31 sequentially passes through the straight arm 12 and the vacuum booster push rod 2 along the vertical direction of the straight arm 12, and the straight arm 12 and the vacuum booster push rod 2 are fixed by the locking pin. With such a setting, it is convenient to connect the straight arm 12 and the vacuum booster push rod 2, and it is also convenient for installation and disassembly.

[0037] Furthermore, the connecting pin 31 includes a first cylindrical section 311, a second cylindrical section 312 and a third cylindrical section 313 which are connected in sequence. The diameter of the first cylindrical section 311 is larger than the diameter of the second cylindrical section 312, and the diameter of the second cylindrical section 312 is larger than the diameter of the third cylindrical section 313; the straight arm 12 is sleeved on the second cylindrical section 312 and abuts against the end surface of the first cylindrical section 311, so that the straight arm 12 can be fixed on the second cylindrical section 312; at the same time, the vacuum booster push rod 2 is sleeved on the third cylindrical section 313, and the locking pin passes through the third cylindrical section 313 to cooperate with the stopper of the vacuum booster push rod 2. In this way, the purpose of fixing the vacuum booster push rod 2 on the third cylindrical section 313 can be achieved.

[0038] like Figure 4 As shown, in this solution, the third cylindrical section 313 has an assembly hole 3131, and the assembly hole 3131 is arranged to penetrate the third cylindrical section 313 in the radial direction, and the locking pin passes through the assembly hole 3131. Such an arrangement can achieve the effect of fixing the vacuum booster push rod 2.

[0039] Specifically, the connecting member 3 further includes an annular bushing 32. The annular bushing 32 is sleeved on the third cylindrical section 313 and is interference fit with the third cylindrical section 313, so that the annular bushing 32 and the third cylindrical section 313 are connected; and the vacuum booster push rod 2 is sleeved on the annular bushing 32, and the annular bushing 32 and the end surface of the vacuum booster push rod 2 that is away from the straight arm 12 abut against each other, and the annular bushing 32 can cooperate with the lock pin stopper. In this way, the wear between the vacuum booster push rod 2 and the third cylindrical section 313 can be reduced through the annular bushing 32, thereby increasing the service life of the brake pedal structure.

[0040] In this embodiment, the brake pedal arm 1 is made of alloy steel, which can ensure the structural strength of the brake pedal arm 1.

[0041] Optionally, the thickness of the brake pedal arm 1 is 6 mm-8 mm. In this way, a suitable thickness of the brake pedal arm 1 can be selected according to actual conditions. Among them, the thickness of the brake pedal arm 1 can be selected as 6 mm, 7 mm or 8 mm.

[0042] Optionally, the material of the brake pedal arm 1 includes but is not limited to Q355, wherein Q355 is a low-alloy high-strength structural steel, "Q" means yield strength, 355 means that the yield strength of this steel is 355MPa, and the yield value will decrease with the increase of the thickness of the material.

[0043] This embodiment also provides a vehicle, which includes a vehicle body, a pedal pad 4, and the brake pedal structure in the above solution. The offset arm 11 of the brake pedal structure is connected to the pedal pad 4, and the straight arm 12 of the brake pedal structure is installed on the vehicle body. In the vehicle adopting the present utility model, the vacuum booster push rod 2 is located on one side of the straight arm 12 and is parallel to the straight arm 12. With such an arrangement, the centers of the vacuum booster push rod 2 and the straight arm 12 are not in the same plane. The brake pedal arm 1 adopts an offset arrangement, which can effectively reduce the span of the brake pedal arm 1. At the same time, the minimum distance d between the straight arm 12 and the vacuum booster push rod 2 is limited within the above range. On the premise of ensuring the layout space of the cab and the front engine compartment, the span of the brake pedal arm 1 is further reduced, avoiding the problem in the prior art that due to the large span of the brake pedal arm 1, in order to ensure the structural strength of the brake pedal arm 1, it is necessary to improve the material or increase the thickness of the brake pedal arm 1, which in turn leads to an increase in cost and weight. Moreover, by arranging the connecting piece 3 to pass through the straight arm 12 and the vacuum booster push rod 2, the force of the brake pedal arm 1 can be transmitted to the vacuum booster push rod 2 through the connecting piece 3, optimizing the force-bearing condition of the brake pedal arm 1. Using the vehicle of the present utility model effectively solves the problem in the prior art that the large span of the brake pedal arm 1 leads to an increase in the cost and weight of the brake pedal arm 1.

[0044] Obviously, the above embodiments of the present utility model are only examples for clearly explaining the present utility model, and are not intended to limit the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. A brake pedal structure, characterized in that, include A brake pedal arm (1), the brake pedal arm (1) comprising an offset arm (11) and a straight arm (12) connected to each other, the offset arm (11) being capable of being connected to a pedal pad (4); A vacuum booster push rod (2), the vacuum booster push rod (2) being located on one side of the straight arm (12) and parallel to the straight arm (12); A connecting member (3), the connecting member (3) being passed through the straight arm (12) and the vacuum booster push rod (2) so as to connect the brake pedal arm (1) and the vacuum booster push rod (2); The minimum distance between the straight arm (12) and the vacuum booster push rod (2) is d, 6.5 mm ≤ d ≤ 7.5 mm.

2. The brake pedal structure according to claim 1, characterized in that, The offset arm (11) comprises an offset section (111) and a connecting section (112) which are connected to each other. The offset section (111) is connected to the straight arm (12) and has an included angle with the straight arm (12). The vacuum booster push rod (2) is located on a side of the straight arm (12) away from the offset section (111), and the connecting section (112) can be connected to the pedal pad (4).

3. The brake pedal structure according to claim 1, characterized in that, The straight arm (12) has a first mounting hole (121), the vacuum booster push rod (2) has a second mounting hole, and the connecting member (3) passes through the first mounting hole (121) and the second mounting hole in sequence to connect the straight arm (12) with the vacuum booster push rod (2).

4. The brake pedal structure according to claim 3, characterized in that, The diameter of the first mounting hole (121) is R, 13 mm ≤ R ≤ 15 mm.

5. The brake pedal structure according to claim 1, characterized in that, The connecting member (3) comprises a connecting pin (31) and a locking pin. The connecting pin (31) passes through the straight arm (12) and the vacuum booster push rod (2) in sequence along the vertical direction of the straight arm (12), and the straight arm (12) and the vacuum booster push rod (2) are fixed by the locking pin.

6. The brake pedal structure according to claim 5, wherein The connecting pin (31) comprises a first cylindrical section (311), a second cylindrical section (312) and a third cylindrical section (313) which are connected in sequence, the diameter of the first cylindrical section (311) is larger than the diameter of the second cylindrical section (312), the diameter of the second cylindrical section (312) is larger than the diameter of the third cylindrical section (313), the straight arm (12) is sleeved on the second cylindrical section (312) and abuts against the end surface of the first cylindrical section (311), the vacuum booster push rod (2) is sleeved on the third cylindrical section (313), and the locking pin passes through the third cylindrical section (313) to cooperate with the stopper of the vacuum booster push rod (2).

7. The brake pedal structure according to claim 6, characterized in that, The third cylindrical section (313) has an assembly hole (3131), the assembly hole (3131) is arranged to penetrate the third cylindrical section (313) in a radial direction, and the locking pin passes through the assembly hole (3131).

8. The brake pedal structure according to claim 6, characterized in that, The connecting member (3) also includes an annular bushing (32), which is sleeved on the third cylindrical section (313) and has an interference fit with the third cylindrical section (313). The vacuum booster push rod (2) is sleeved on the annular bushing (32), and the annular bushing (32) and the end surface of the vacuum booster push rod (2) facing away from the straight arm (12) are in abutment with each other, and the annular bushing (32) can cooperate with the locking pin stop.

9. The brake pedal structure according to claim 1, characterized in that, The brake pedal arm (1) is made of alloy steel.

10. A vehicle, characterized in that, It comprises a vehicle body, a pedal pad (4) and a brake pedal structure as claimed in any one of claims 1 to 9, wherein the biasing arm (11) of the brake pedal structure is connected to the pedal pad (4), and the straight arm (12) of the brake pedal structure is installed on the vehicle body.

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