Brake arm assembly and brake pedal assembly

Abstract

The utility model relates to the field of brake devices of vehicles, in particular to a brake arm assembly and a brake pedal assembly. The brake arm assembly comprises a brake arm, a pressing plate and a deformable sheath. The pressing plate is located at one end of the brake arm. The pressing plate is sleeved with the protective sleeve, all the edges of the first face of the pressing plate are covered with the protective sleeve, and all the edges of the second face of the pressing plate are covered with the protective sleeve. The sheath comprises a first covering part and a second covering part, a mounting opening is formed in the second covering part, and the outline of the mounting opening is located in the outline of the second covering part; the sheath is made of a vulcanized rubber material. No positioning structure is arranged between the pressing plate and the sheath, and the pressing plate and the sheath are fixed only through the first covering part and the second covering part of the sheath, so that the manufacturing process of the positioning structure on the rubber pad and the steel plate is reduced; therefore, the technical problem of how to reduce the structure of limiting the displacement in the rubber pad and the steel plate bracket of the pedal main body is solved.

Description

Technical Field

[0001] The utility model relates to the field of vehicle braking devices, specifically a brake arm assembly and a brake pedal assembly. Background Art

[0002] In the prior art, there is a patent document with the name of an automotive brake pedal and the application number 201720681019.6; in this prior art, a bolt connection is adopted between the rubber pad and the steel plate, and at the same time, the rubber pad is provided with a wrap-around edge so that the rubber pad can wrap the steel plate.

[0003] In the above prior art, the wrap-around edge of the rubber pad actually cannot play a role in fixing the rubber pad and the steel plate. The reason is that a bolt connection is adopted between the rubber pad and the steel plate. When the bolts penetrate through the rubber pad and the steel plate respectively, there is no displacement between the rubber pad and the steel plate along the surface of the steel plate. Furthermore, when there is no displacement between the rubber pad and the steel plate along the surface of the steel plate, the wrap-around edge of the rubber pad actually cannot play a role in restricting the displacement of the rubber pad relative to the steel plate. From another perspective, the wrap-around edge of the rubber pad actually cannot fix the rubber pad relative to the steel plate.

[0004] In the above prior art, due to the bolt connection structure, positioning structure, etc. provided between the rubber pad and the steel plate, the economic cost of the pedal main body of this prior art is relatively high. The reason is that there are many structures restricting the displacement between the rubber pad and the steel plate, which increases the processing cost of the rubber pad and the steel plate, and further increases the economic cost of the pedal main body of this prior art.

[0005] Therefore, how to reduce the structure of the pedal main body that'restricts the displacement between the rubber pad and the steel plate bracket' becomes the technical problem to be solved. Summary of the Utility Model

[0006] To solve the technical problem of how to reduce the structure of the pedal main body that'restricts the displacement between the rubber pad and the steel plate bracket', the utility model provides a brake arm assembly and a brake pedal assembly.

[0007] To achieve the above object, the technical solution adopted by the utility model is as follows:

[0008] According to one aspect of the utility model, a brake arm assembly is provided, including a brake arm, a pressing plate, and a deformable sheath;

[0009] The pressing plate is located at one end of the brake arm. The pressing plate has a first surface facing away from the brake arm and a second surface facing the brake arm. The connection between the pressing plate and the brake arm is located on the second surface;

[0010] The sheath is sleeved on the pressing plate, wherein all edges of the first surface of the pressing plate are covered by the sheath, and all edges of the second surface of the pressing plate are covered by the sheath;

[0011] The sheath includes a first covering portion and a second covering portion, the first covering portion and the second covering portion are integrally formed, an installation opening is provided at the second covering portion, and the contour of the installation opening is located within the contour of the second covering portion. The pressing plate is disposed between the first covering portion and the second covering portion through the installation opening;

[0012] The sheath is made of vulcanized rubber material.

[0013] Further, the second covering portion includes a head flange, a tail flange and two side flanges;

[0014] The head flange, the tail flange and the two side flanges are respectively integrally formed with the first covering portion, the head flange, the tail flange and the two side flanges are respectively connected to one side of the first covering portion, and the installation opening is formed between the head flange, the tail flange and the two side flanges;

[0015] One of the side flanges and the head flange form one of the mouth-shaped extension portions, and the distance between the two extension portions is greater than the distance between the two side flanges.

[0016] Further, the first covering portion is configured to be curved;

[0017] The first covering portion has a first inner surface facing the pressing plate and a first outer surface facing away from the pressing plate. The first inner surface contacts the first surface, and a plurality of protrusions are provided on the first outer surface.

[0018] Further, it further includes a covering member;

[0019] The covering member is provided with a plurality of through holes, and the position of any one of the through holes is respectively matched with one of the protrusions;

[0020] The covering member is configured to be detachably disposed on the sheath, wherein any one of the through holes and one of the protrusions form an interference fit.

[0021] According to one aspect of the present invention, there is provided a brake pedal assembly, including the brake arm assembly as described above, and further including a bracket, a shaft and a brake sub-arm;

[0022] The brake arm and the brake sub-arm of the brake arm assembly are respectively hinged to the bracket through the shaft;

[0023] A bushing and a helical spring are arranged on the shaft. The bushing is sleeved on the shaft, and the bushing is in clearance fit with the shaft. The bushing is fixedly connected to the brake arm and the brake sub-arm respectively. The helical spring is sleeved on the bushing, and rod-shaped portions are respectively extended at both ends of the helical spring. The included angle between the two rod-shaped portions is restricted by the brake sub-arm and the bracket.

[0024] Further, the brake sub-arm is provided with a first positioning groove, and the bracket is provided with a second positioning groove;

[0025] One of the rod-shaped portions is restricted in the first positioning groove, and the other rod-shaped portion is restricted in the second positioning groove.

[0026] Further, a positioning post and a positioning pin are further included;

[0027] The positioning post and the positioning pin are coaxially arranged. A first positioning groove is formed between one end of the positioning post and the nail head portion of the positioning pin. The other end of the positioning post is fixedly or detachably connected to the brake sub-arm, and the positioning pin is fixedly or detachably connected to the positioning post;

[0028] A pair of ear plates are arranged on the bracket;

[0029] Positioning through holes are respectively arranged on any one of the ear plates. Both ends of the shaft are respectively hinged to one of the positioning through holes. A second positioning groove is recessedly arranged at the connection portion between one of the ear plates and the bracket.

[0030] Further, a position-adjustable limit block is further included;

[0031] The limit block is movably arranged on the bracket. Among them, the brake sub-arm has a head end and a tail end. The limit block is located between the brake sub-arm and the bracket, and the head end is located between the tail end and the limit block.

[0032] The above technical solution has the following advantages or beneficial effects:

[0033] For the brake arm assembly provided by the present utility model, there is no positioning structure between the pressing plate and the sheath. At the same time, the pressing plate and the sheath are only fixed by the first covering portion and the second covering portion of the sheath. Compared with the above prior art, the manufacturing process of the positioning structure on the rubber pad and the steel plate is reduced, and the manufacturing process of the through holes penetrated by bolts on the rubber pad and the steel plate is reduced. Furthermore, the technical problem of how to reduce the structure of'restricting the displacement of the rubber pad and the steel plate bracket in the pedal main body' is solved, and the economic cost of the pressing plate and the sheath is significantly reduced. Description of the Drawings

[0034] Figure 1 Structural schematic diagram of the brake arm assembly provided for Embodiments 1 and 2 of the present utility model;

[0035] Figure 2 Structural schematic diagram of the brake arm assembly provided for Embodiments 1 and 2 of the present utility model;

[0036] Figure 3 Structural schematic diagram of the sheath provided for Embodiments 1 and 2 of the present utility model;

[0037] Figure 4 Structural schematic diagram of the sheath provided for Embodiments 1 and 2 of the present utility model;

[0038] Figure 5 Structural schematic diagram of the brake arm assembly provided for Embodiments 1 and 2 of the present utility model;

[0039] Figure 6 Structural schematic diagram of the brake arm assembly provided for Embodiments 1 and 2 of the present utility model;

[0040] Figure 7 Structural schematic diagram of the covering member provided for Embodiments 1 and 2 of the present utility model;

[0041] Figure 8 Structural schematic diagram of the sheath and the covering member provided for Embodiments 1 and 2 of the present utility model;

[0042] Figure 9 Structural schematic diagram of the brake pedal assembly provided for Embodiment 2 of the present utility model;

[0043] Figure 10 is Figure 9 an enlarged view of a part of;

[0044] Figure 11 is Figure 9 an enlarged view of a part of. Detailed implementation manners

[0045] Embodiment 1:

[0046] In this embodiment, a brake arm assembly is provided to solve the technical problem of how to reduce the displacement of the 'limiting rubber pad within the steel plate bracket' of the pedal body.

[0047] Specifically, referring to Figures 1 to 6 , the brake arm assembly 100 in this embodiment includes a brake arm 101, a pressing plate 102, and a deformable sheath 103;

[0048] The pressing plate 102 is located at one end of the brake arm 101. The pressing plate 102 has a first surface A1 facing away from the brake arm 101 and a second surface A2 facing the brake arm 101. The connection between the pressing plate 102 and the brake arm 101 is located on the second surface A2;

[0049] The sheath 103 is sleeved on the pressing plate 102. Among them, all edges of the first surface A1 of the pressing plate 102 are covered by the sheath 103, and all edges of the second surface A2 of the pressing plate 102 are covered by the sheath 103;

[0050] The sheath 103 includes a first covering part 104 and a second covering part 105. The first covering part 104 and the second covering part 105 are integrally formed. An installation opening 106 is provided at the second covering part 105. The contour of the installation opening 106 is located within the contour of the second covering part 105. The pressing plate 102 is arranged between the first covering part 104 and the second covering part 105 through the installation opening 106;

[0051] The sheath 103 is made of vulcanized rubber material.

[0052] In this embodiment, the pressing plate 102 and the brake arm 101 can be configured to be fixedly connected, including but not limited to integrally forming the pressing plate 102 and the brake arm 101, or welding the pressing plate 102 and the brake arm 101 into one body;

[0053] Moreover, in this embodiment, the pressing plate 102 and the brake arm 101 can also be configured to be detachably connected, including but not limited to bolt - connecting or snap - connecting the pressing plate 102 and the brake arm 101.

[0054] When the brake arm assembly 100 of this embodiment is installed on a vehicle, the driver's foot can step on the pressing plate 102. After the pressing plate 102 receives the pressure from the driver's foot, the pressing plate 102 pushes the brake arm 101 to rotate. Thus, from the driver's perspective, the pressing plate 102 and the brake arm 101 have made a braking action after being stepped on.

[0055] The deformable sheath 103 (hereinafter referred to as the sheath 103) covers the pressing plate 102. When the driver's foot steps on the pressing plate 102, the deformable sheath 103 isolates the pressing plate 102 from the driver's foot; from the perspective of the sheath 103, the sheath 103 is made of vulcanized rubber material. Thus, when the sheath 103 receives the pressure from the driver's foot, the sheath 103 can generate deformation and shrinkage, thereby reducing the reaction force of the sheath 103 on the driver's foot.

[0056] In this embodiment, the sheath 103 is used to cover the first surface A1 of the pressing plate 102 (see Figure 5) is covered at the edges; specifically, if the shape of the pressing plate 102 is configured as a quadrilateral, then the four edges of the first surface A1 of the quadrilateral pressing plate 102 are completely covered or partially covered by the sheath 103; if the shape of the pressing plate 102 is configured as a pentagon, hexagon or other polygon, then any edge of the first surface A1 of the polygonal pressing plate 102 is completely covered or partially covered by the sheath 103;

[0057] Corresponding to the first surface A1 of the pressing plate 102, in this embodiment, the sheath 103 is used to cover the edges of the second surface A2 of the pressing plate 102 (see Figure 6 ) is covered at the edges; specifically, if the shape of the pressing plate 102 is configured as a quadrilateral, then the four edges of the second surface A2 of the quadrilateral pressing plate 102 are completely covered or partially covered by the sheath 103; if the shape of the pressing plate 102 is configured as a pentagon, hexagon or other polygon, then any edge of the second surface A2 of the polygonal pressing plate 102 is completely covered or partially covered by the sheath 103;

[0058] From the combined structure of the sheath 103 and the pressing plate 102, when the sheath 103 is arranged on the pressing plate 102 and covers all the edges of the first surface A1 and all the edges of the second surface A2 of the pressing plate 102 respectively, the pressing plate 102 is restricted within the contour range of the sheath 103 (see Figure 1 or Figure 2 ), so that the pressing plate 102 cannot move relative to the sheath 103.

[0059] In the combined structure of the pressing plate 102 and the sheath 103 described above, a problem arises for the assembly work of the pressing plate 102 and the sheath 103. Since the sheath 103 can cover all the edges of the first surface A1 and all the edges of the second surface A2 of the pressing plate 102, it is not easy to arrange the sheath 103 on the pressing plate 102;

[0060] For the above problem, see Figure 3 or Figure 4 , in this embodiment, the sheath 103 includes a first covering portion 104 and a second covering portion 105. The first covering portion 104 and the second covering portion 105 are integrally formed, and an installation opening 106 is provided at the second covering portion 105;

[0061] When arranging the sheath 103 on the pressing plate 102, one edge of the pressing plate 102 corresponding to the installation opening 106 of the sheath 103 is first inserted into the installation opening 106. At this time, the remaining edges of the pressing plate 102 remain outside the installation opening 106, or a part of two of the remaining edges of the pressing plate 102 has been inserted into the installation opening 106, and the remaining edges remain outside the installation opening 106;

[0062] The staff member continues to push the sheath 103, so that the edge of the pressing plate 102 that has been inserted into the installation opening 106 gradually penetrates through the installation opening 106 and moves within the gap between the first covering portion 104 and the second covering portion 105; from the perspective of the sheath 103, affected by the acting force of the pressing plate 102, the second covering portion 105 of the sheath 103 will deform, so that the opening area of the installation opening 106 shows a gradually expanding trend;

[0063] When the sheath 103 is continuously pushed by the staff member and the pressing plate 102 contacts at least one intersection between the first covering portion 104 and the second covering portion 105 of the sheath 103, the pressing plate 102 stops moving relative to the sheath 103; at this time, most of the pressing plate 102 has been accommodated between the first covering portion 104 and the second covering portion 105, and only a small amount of the pressing plate 102 is still exposed outside the installation opening 106; corresponding to the pressing plate 102 exposed outside, the staff member manually bends the remaining second covering portion 105 that does not cover the pressing plate 102, thereby expanding the contour of the installation opening 106 for the second time. Furthermore, the staff member can sleeved the remaining second covering portion 105 that does not cover the pressing plate 102 on the pressing plate 102 exposed outside the installation opening 106, so that the pressing plate 102 is completely arranged between the first covering portion 104 and the second covering portion 105 of the sheath 103, and the assembly work of the pressing plate 102 and the sheath 103 is completed.

[0064] In the prior art (an automotive brake pedal with an application number of 201720681019.6), its rubber pad is equivalent to the sheath 103 in this embodiment, and its steel plate is equivalent to the pressing plate 102 in this embodiment; a positioning structure (specifically including positioning holes and positioning protrusions) is provided between the rubber pad and the steel plate of this prior art, thus increasing the manufacturing process of the rubber pad and the steel plate, and further increasing the manufacturing cost of the rubber pad and the steel plate; at the same time, the rubber pad and the steel plate of this prior art are connected by bolts, so through holes penetrated by bolts have to be processed on the rubber pad and the steel plate respectively, increasing the manufacturing process of the rubber pad and the steel plate, and further increasing the manufacturing cost of the rubber pad and the steel plate.

[0065] In the brake arm assembly 100 of this embodiment, there is no positioning structure between the pressing plate 102 and the sheath 103. At the same time, the pressing plate 102 and the sheath 103 are fixed only by the first covering portion 104 and the second covering portion 105 of the sheath 103. Compared with the above-mentioned prior art, the manufacturing process of the positioning structure on the rubber pad and the steel plate is reduced, and the manufacturing process of the through holes penetrated by bolts on the rubber pad and the steel plate is reduced. Furthermore, the technical problem of how to reduce the structure of'restricting the displacement of the rubber pad within the steel plate bracket' of the pedal body is solved, and the economic cost of the pressing plate 102 and the sheath 103 is significantly reduced.

[0066] Further, referring to Figure 3 or Figure 4 , in the brake arm assembly 100 of this embodiment, the second covering portion 105 includes a head flange 107, a tail flange 108 and two side flanges 109;

[0067] The head flange 107, the tail flange 108 and the two side flanges 109 are integrally formed with the first covering portion 104 respectively. The head flange 107, the tail flange 108 and the two side flanges 109 are respectively connected to one side of the first covering portion 104, and an installation opening 106 is formed between the head flange 107, the tail flange 108 and the two side flanges 109;

[0068] An expansion portion 110 in the shape of a mouth is formed between any one of the side flanges 109 and the head flange 107, and the distance between the two expansion portions 110 is greater than the distance between the two side flanges 109.

[0069] The second covering portion 105 of the sheath 103 is configured to have a head flange 107, a tail flange 108 and two side flanges 109. When the brake arm assembly 100 of this embodiment is installed on a vehicle, from the driver's perspective, along the vehicle traveling direction, the head flange 107 is located at the front end, the tail flange 108 is located at the rear end, and the two side flanges 109 are respectively located at the left end and the right end;

[0070] The position of the installation opening 106 of the sheath 103 can be set in one of the following ways:

[0071] The first setting method is that the installation opening 106 is restricted between the head flange 107 and the two side flanges 109;

[0072] The second setting method is that the installation opening 106 is restricted between the tail flange 108 and the two side flanges 109;

[0073] In the third setting method, the head flange 107 and the tail flange 108 are respectively limited to two uniform segments. The head flange 107 of the first segment, the tail flange 108 of the first segment, and one of the side flanges 109 form a first flange group, and the head flange 107 of the second segment, the tail flange 108 of the second segment, and the other side flange 109 form a second flange group. The installation opening 106 is limited between the first flange group and the second flange group.

[0074] In this embodiment, preferably, the installation opening 106 is set according to the first setting method.

[0075] It should be understood that after the pressing plate 102 is sleeved by the sheath 103, it is fixed by the first covering portion 104 and the second covering portion 105, so that the sheath 103 cannot displace along the plate surface direction of the pressing plate 102 relative to the pressing plate 102; in other words, if it is desired that the sheath 103 cannot displace along the plate surface direction of the pressing plate 102 relative to the pressing plate 102, the edge of the pressing plate 102 must contact the intersection between the first covering portion 104 and the second covering portion 105, and a tight clearance fit is formed between the two. Therefore, the aforementioned installation opening 106 should be able to accommodate the longest or widest part of the pressing plate 102, and a tight clearance fit is formed between the installation opening 106 and the pressing plate 102;

[0076] Taking the setting of the installation opening 106 according to the first setting method as an example, the distance between the two extension portions 110 of the installation opening 106 is the maximum distance, and the maximum distance should be able to accommodate the widest part of the pressing plate 102, and the maximum distance is configured to be the same as the width of the widest part of the pressing plate 102, or the maximum distance is slightly smaller than the width of the widest part of the pressing plate 102;

[0077] If the maximum distance is configured to be the same as the width of the widest part of the pressing plate 102, then, during the process of the sheath 103 being sleeved on the pressing plate 102, a part of the pressing plate 102 is inserted into the installation opening 106, and the staff continues to push the sheath 103 to move, so that the widest part of the pressing plate 102 gradually approaches and reaches the installation opening 106. At this time, a tight contact is formed between the widest part of the pressing plate 102 and the two extension portions 110 of the installation opening 106, but the sheath 103 at the two extension portions 110 does not produce a visible deformation to the naked eye; until the staff covers the head flange 107, the tail flange 108, and the two side flanges 109 on all the edges of the second surface A2 of the pressing plate 102 respectively, at this time, a tight contact is formed between any edge of the pressing plate 102 and the sheath 103, but the sheath 103 does not produce a visible deformation to the naked eye;

[0078] If the maximum distance is configured to be slightly smaller than the width of the widest part of the pressing plate 102, then, during the process of sleeving the sheath 103 onto the strict handling, a part of the pressing plate 102 is inserted into the mounting opening 106, and the staff continues to push the sheath 103 to move, so that the widest part of the pressing plate 102 gradually approaches and reaches the mounting opening 106. At this time, a tight contact is formed between the widest part of the pressing plate 102 and the two expansion parts 110 of the mounting opening 106, and at the same time, the sheath 103 located at the two expansion parts 110 undergoes a visible deformation to the naked eye; until the staff covers the head flange 107, the tail flange 108, and the two side flanges 109 on all the edges of the second surface A2 of the pressing plate 102 respectively. At this time, a tight contact is formed between any edge of the pressing plate 102 and the sheath 103, and at the same time, the sheath 103 does not undergo a visible deformation to the naked eye. The visible deformation originally at the two expansion parts 110 of the mounting opening 106 is restored to its original state (without visible deformation to the naked eye).

[0079] Further, referring to Figure 3 or Figure 4 , in the brake arm assembly 100 of this embodiment, the first covering part 104 is configured to be curved;

[0080] The first covering part 104 has a first inner surface facing the pressing plate 102 and a first outer surface facing away from the pressing plate 102. The first inner surface contacts the first surface A1, and a plurality of protrusions 111 are provided on the first outer surface.

[0081] Among them, the plate surface shape of the pressing plate 102 is configured to be curved, which is common knowledge known to those skilled in the art and will not be elaborated here.

[0082] In order to match the shape of the pressing plate 102, in this embodiment, the first covering part 104 is configured to be curved. More specifically, the whole sheath 103 can be configured in two schemes to conform to the shape of the pressing plate 102 and the tight connection mode between the pressing plate 102 and the sheath 103;

[0083] The first scheme is that if the first surface A1 of the pressing plate 102 facing the first covering part 104 is configured to be curved, and the second surface A2 of the pressing plate 102 facing the second covering part 105 is configured to be flat, then the first covering part 104 of the sheath 103 is configured to be curved, and at the same time, the second covering part 105 of the sheath 103 is configured to be flat.

[0084] The second scheme is that if the first surface A1 of the pressing plate 102 facing the first covering part 104 is curved, and the second surface A2 of the pressing plate 102 facing the second covering part 105 is configured to be curved, then the first covering part 104 of the sheath 103 is configured to be curved, and at the same time, the second covering part 105 of the sheath 103 is configured to be curved.

[0085] A plurality of protrusions 111 are located on the first outer surface of the first covering portion of the sheath 103, and are used to increase the surface area of the first outer surface of the first covering portion 104. When the brake arm assembly 100 of this embodiment is disposed on a vehicle, the driver's foot can contact the plurality of protrusions 111 on the first outer surface, thereby increasing the contact area between the driver's foot and the sheath 103, and further increasing the frictional force between the driver's foot and the sheath 103.

[0086] Further, referring to Figure 7 or Figure 8 , the brake arm assembly 100 of this embodiment further includes a covering member 112;

[0087] The covering member 112 is provided with a plurality of through holes, and the position of any one through hole respectively matches one of the protrusions 111;

[0088] The covering member 112 is configured to be detachably disposed on the sheath 103, wherein any one through hole respectively forms an interference fit with one of the protrusions 111.

[0089] It should be understood that if the driver's foot directly and for a long time contacts the sheath 103, it is easy to cause wear of the sheath 103, resulting in a reduction in the service life of the sheath 103; to solve this problem, a covering member 112 can be provided on the sheath 103. Among them, the covering member 112 is also made of vulcanized rubber material, and the covering member 112 is provided with a plurality of through holes that match the aforementioned plurality of protrusions 111. At the same time, the covering member 112 preferably configures the contour of its edge to be the same as or match the contour of the edge of the sheath 103. When actually assembling the covering member 112 and the sheath 103, the staff sets the covering member 112 on the sheath 103 along the direction from the first outer surface to the first inner surface of the sheath 103. Among them, the plurality of protrusions 111 are respectively inserted and penetrate one of the through holes, so that any one of the protrusions 111 is exposed outside the contour of the covering member 112.

[0090] When the covering member 112 is provided on the sheath 103 and the brake arm assembly 100 of this embodiment is disposed on a vehicle, the driver's foot can contact the protrusions 111 of the sheath 103 and the covering member 112. However, the driver's foot cannot contact the first outer surface of the sheath 103, and the covering member 112 becomes an isolation member between the first outer surface of the sheath 103 and the driver's foot, thereby reducing the wear of the sheath 103 and extending the service life of the sheath 103.

[0091] Embodiment 2:

[0092] In this embodiment, a brake pedal assembly is provided, which includes the brake arm assembly 100 in the aforementioned Embodiment 1.

[0093] Specifically, refer to Figures 9 to 11 , the brake pedal assembly of this embodiment includes the brake arm assembly 100 in the aforementioned Embodiment 1, and further includes a bracket 200, a shaft 300, and a brake sub-arm 400;

[0094] The brake arm 101 of the brake arm assembly 100 and the brake sub-arm 400 are respectively hinged to the bracket 200 through the shaft 300;

[0095] A bushing 500 and a helical spring 600 are arranged on the shaft 300. The bushing 500 is sleeved on the shaft 300, and the bushing 500 is in clearance fit with the shaft 300. The bushing 500 is fixedly connected to the brake arm 101 and the brake sub-arm 400 respectively. The helical spring 600 is sleeved on the bushing 500, and rod-shaped portions 601 are respectively extended at both ends of the helical spring 600. The included angle between the two rod-shaped portions 601 is limited by the brake sub-arm 400 and the bracket 200.

[0096] In the brake pedal assembly of this embodiment, the structure and technical effects of the brake arm assembly 100 are respectively the same as those of the brake arm assembly 100 in the aforementioned Embodiment 1, and will not be elaborated here.

[0097] In the brake pedal assembly of this embodiment, the brake arm 101 and the brake sub-arm 400 are respectively fixedly connected through the bushing 500, and the bushing 500 is hinged to the bracket 200 through the shaft 300. When the brake pedal assembly of this embodiment is installed on a vehicle, when the driver's foot steps on the pressing plate 102 and the sheath 103 of the brake arm 101, the pressing plate 102 and the sheath 103 receive the driving force of the driver's foot, so that the pressing plate 102 and the sheath 103 drive the brake arm 101 to rotate around the shaft 300. At the same time, since the brake arm 101 and the brake sub-arm 400 are respectively fixedly connected to the bushing 500, thus, while the brake arm 101 rotates, the brake sub-arm 400 and the bushing 500 respectively rotate around the shaft 300.

[0098] Before the brake sub-arm 400 rotates, the state of the brake sub-arm 400 is in the first state. After the brake sub-arm 400 rotates and reaches the limit, the state of the brake sub-arm 400 is in the second state; when the brake sub-arm 400 is in the first state, the included angle formed between the two rod-shaped portions 601 of the helical spring 600 is in the maximum included angle state. When the brake sub-arm 400 is in the second state, the included angle formed between the two rod-shaped portions of the helical spring 600 is in the minimum included angle state.

[0099] When the helical spring 600 transitions from the maximum included angle state to the minimum included angle state, the helical spring 600 absorbs energy, and the source of its energy is the pressure exerted by the driver's foot on the pressure plate 102 and the sheath 103; conversely, after the driver's foot disengages from the pressure plate 102 and the sheath 103, the helical spring 600 releases energy, and the helical spring 600 transitions from the minimum included angle state to the maximum included angle state until the helical spring 600 returns to the maximum included angle state (i.e., the brake secondary arm 400 returns to the first state).

[0100] Furthermore, referring to Figure 10 or Figure 11 , in the brake pedal assembly of this embodiment, the brake secondary arm 400 is provided with a first positioning groove 401, and the bracket 200 is provided with a second positioning groove 201;

[0101] One of the rod-shaped portions 601 is restricted within the first positioning groove 401, and the other rod-shaped portion 601 is restricted within the second positioning groove 201.

[0102] After the two rod-shaped portions 601 of the helical spring 600 are respectively restricted within the first positioning groove 401 and the second positioning groove 201, the included angle between the two rod-shaped portions 601 is fixed; the two rod-shaped portions 601 cannot disengage from the first positioning groove 401 and the second positioning groove 201 respectively in the axial direction of the shaft 300; under the elastic force of the helical spring 600, although there is a tendency for the included angle to gradually increase, due to the blocking of the first positioning groove 401 and the second positioning groove 201, the two rod-shaped portions 601 always remain in a stationary state relative to the first positioning groove 401 and the second positioning groove 201, so that the two rod-shaped portions 601 cannot disengage from the first positioning groove 401 and the second positioning groove 201 in the radial direction of the shaft 300.

[0103] The first positioning groove 401 and the second positioning groove 201 can be set in various shapes, as long as the first rod-shaped portion 601 can be snapped into the first positioning groove 401 and the second rod-shaped portion 601 can be snapped into the second positioning groove 201.

[0104] Preferably, referring to Figure 9 or Figure 11 , the brake pedal assembly of this embodiment further includes a positioning post 710 and a positioning pin 711;

[0105] The positioning post 710 and the positioning pin 711 are arranged coaxially with the shaft 300. A first positioning groove 401 is formed between one end of the positioning post 710 and the nail head portion of the positioning pin 711. One end of the positioning post 710 is fixedly or detachably connected to the brake secondary arm 400, and the positioning pin 711 is fixedly or detachably connected to the positioning post 710;

[0106] A pair of ear plates 800 are provided on the bracket 200;

[0107] Positioning through holes are respectively provided on any one of the ear plates 800. Both ends of the shaft 300 are respectively hinged to one of the positioning through holes. A second positioning groove 201 is recessed at the connection between one of the ear plates 800 and the bracket 200.

[0108] Wherein, the positions of the positioning post 710 and the positioning pin 711 relative to the brake arm 101 can be set according to the specific length and rotation angle of the brake arm assembly 100;

[0109] For example, if the brake pedal assembly is installed on a small vehicle, affected by the space in the cab of the small vehicle, the length of the brake arm 101 of the brake arm assembly 100 may be configured to be relatively short. When the rotation angle of the brake arm 101 is fixed, one of the rod-shaped portions 601 of the helical spring 600 may extend to the end of the brake sub-arm 400 (this end is the end far from the shaft 300). In this case, the positioning post 710 and the positioning pin 711 can be configured at positions close to the end of the brake sub-arm 400, so that the elastic force of the helical spring 600 is set to a reasonable elastic force;

[0110] Another example: If the brake pedal assembly is installed on a large vehicle, affected by the space in the cab of the large vehicle, the length of the brake arm 101 of the brake arm assembly 100 may be set to be relatively long. When the rotation angle of the brake arm 101 is fixed, one of the rod-shaped portions 601 of the helical spring 600 may be at the middle of the actual brake sub-arm 400. In this case, the positioning post 710 and the positioning pin 711 can be configured at positions located at the middle of the brake sub-arm 400, so that the elastic force of the helical spring 600 is set to a reasonable elastic force;

[0111] Another example: If the installation spaces of two vehicles are the same, the braking requirement of one vehicle is comfort, that is, the rotation angle of the brake arm 101 is relatively large, and the braking requirement of the other vehicle is sensitivity, that is, the rotation angle of the brake arm 101 is relatively small. To ensure the reasonable elastic force of the helical spring 600, for the first vehicle, the positioning pin 711 and the positioning post 710 can be arranged at positions between the end and the middle of the brake sub-arm 400. For the second vehicle, the positioning pin 711 and the positioning post 710 can be arranged at positions located at the end of the brake abdomen.

[0112] In this embodiment, the positioning post 710 is preferably fixed on the brake auxiliary arm 400, and the positioning pin 711 can be threadedly connected or fixedly connected to the positioning post 710. Since an annular first positioning groove 401 is formed between the head portion and the rod portion of the positioning pin 711 and the positioning post 710, the setting work of adjusting the opening direction of the first positioning groove 401 is avoided, which is beneficial to improving the efficiency of assembling the helical spring 600.

[0113] It should be understood that in other embodiments, only the positioning post 710 may be provided, and the first positioning groove 401 may be directly machined on the positioning post 710. However, since the positioning post 710 is fixed on the brake auxiliary arm 400, it is necessary to consider how to set the opening direction of the first positioning groove 401 so that one of the rod-shaped portions 601 of the helical spring 600 can be arranged in the first positioning groove 401.

[0114] A pair of ear plates 800 on the bracket 200, the first function of which is to mount the two ends of the shaft 300, and the second function is to provide a fixed position for the second positioning groove 201; the opening direction of the second positioning groove 201 located on one of the ear plates 800 faces the shaft 300, so that after the helical spring 600 is sleeved on the bushing 500, the other rod-shaped portion 601 of the helical spring 600 can be snapped into the second positioning groove 201 of the ear plate 800.

[0115] Further, referring to Figure 9 , the brake pedal assembly of this embodiment further includes a position-adjustable limit block 900;

[0116] The limit block 900 is movably arranged on the bracket 200. Among them, the brake auxiliary arm 400 has a head end and a tail end. The limit block 900 is located between the brake auxiliary arm 400 and the bracket 200, and the head end is located between the tail end and the limit block 900.

[0117] As mentioned above, the brake auxiliary arm 400 has a first state and a second state. Among them, the limit block 900 is used to prevent the head end of the brake auxiliary arm 400 from moving towards the bracket 200, so that the brake auxiliary arm 400 forms the first state; when the brake auxiliary arm 400 changes from the first state to the second state, the head end of the brake auxiliary arm 400 gradually moves away from the limit block 900; conversely, when the brake auxiliary arm 400 changes from the second state to the first state, the head end of the brake auxiliary arm 400 gradually approaches and contacts the limit block 900.

[0118] Preferably, a gasket made of vulcanized rubber material is provided on the limit block 900 to reduce the kinetic energy of the limit block 900 contacting the brake auxiliary arm 400 and improve the working life of the limit block 900 and the brake auxiliary arm 400.

[0119] Preferably, the limiting block 900 is bolted to the bracket 200. Specifically, a screw rod is provided on the limiting block 900, and a mounting hole is provided on the bracket 200. The screw rod on the limiting block 900 is passed through the mounting hole and then connected to a nut.

[0120] In addition to the foregoing, the brake pedal assembly of this embodiment is further provided with a brake push rod (not shown in the figure) for connecting to an electronically controlled master brake cylinder;

[0121] A working hole for the brake push rod to penetrate is provided on the bracket 200. One end of the brake push rod is hinged to the brake secondary arm 400, and the other end of the brake push rod penetrates the working hole;

[0122] When the brake pedal assembly of this embodiment is connected to the electronically controlled master brake cylinder, the aforementioned brake arm assembly 100 is located on the front of the bracket 200, and the electronically controlled master brake cylinder is located on the back of the bracket 200. Among them, the electronically controlled master brake cylinder is bolted to the bracket 200.

[0123] The brake push rod can adopt various structures of brake push rods in the prior art. For example: a U-shaped connecting piece is provided at one end of the brake push rod, and one end of the brake secondary arm 400 is inserted into the U-shaped groove of the U-shaped connecting piece, and the U-shaped connecting piece and the brake secondary arm 400 are respectively penetrated by bolts or positioning pins.

[0124] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A brake arm assembly, characterized in that: It includes a brake arm, a pressure plate and a deformable sheath; The pressure plate is located at one end of the brake arm, the pressure plate has a first surface facing away from the brake arm and a second surface facing the brake arm, and the connection between the pressure plate and the brake arm is located on the second surface; The sheath is sleeved on the pressing plate, wherein all edges of the first surface of the pressing plate are covered by the sheath, and all edges of the second surface of the pressing plate are covered by the sheath; The sheath comprises a first covering portion and a second covering portion, the first covering portion and the second covering portion are made in one piece, a mounting opening is provided at the second covering portion, the contour of the mounting opening is located within the contour of the second covering portion, and the pressing plate is arranged between the first covering portion and the second covering portion through the mounting opening; The sheath is made of vulcanized rubber material.

2. The brake arm assembly according to claim 1, characterized in that: The second covering portion includes a head flange, a tail flange and two side flanges; The head flange, the tail flange and the two side flanges are respectively made integrally with the first covering part, the head flange, the tail flange and the two side flanges are respectively connected to one side of the first covering part, and the mounting opening is formed between the head flange, the tail flange and the two side flanges; An extended portion in the shape of a mouth is formed between any one of the side flanges and the head flange, and the distance between the two extended portions is greater than the distance between the two side flanges.

3. The brake arm assembly according to claim 1, characterized in that: The first covering portion is configured as a curved surface; The first covering portion has a first inner surface facing the pressing plate and a first outer surface away from the pressing plate, the first inner surface contacts the first surface, and a plurality of protrusions are disposed on the first outer surface.

4. The brake arm assembly according to claim 3, characterized in that: Also included are covering components; The covering component is provided with a plurality of through holes, and the position of any one of the through holes matches with one of the protrusions respectively; The covering component is configured to be detachably disposed on the sheath, wherein any one of the through holes forms an interference fit with one of the protrusions respectively.

5. A brake pedal assembly comprising a brake arm assembly according to any one of claims 1 to 4, characterized in that: Also included are the bracket, axle and brake jib; The brake arm and the brake auxiliary arm of the brake arm assembly are respectively hinged to the bracket through the shaft; A bushing and a coil spring are provided on the shaft. The bushing is sleeved on the shaft and is loosely matched with the shaft. The bushing is fixedly connected to the brake arm and the brake auxiliary arm respectively. The coil spring is sleeved on the bushing. Rod-shaped portions are respectively extended at both ends of the coil spring. The angle between the two rod-shaped portions is limited by the brake auxiliary arm and the bracket.

6. The brake pedal assembly according to claim 5, characterized in that: The brake auxiliary arm is provided with a first positioning groove, and the bracket is provided with a second positioning groove; One of the rod-shaped portions is confined in the first positioning groove, and the other of the rod-shaped portions is confined in the second positioning groove.

7. The brake pedal assembly according to claim 6, characterized in that: Also includes positioning posts and positioning pins; The positioning column and the positioning nail are coaxially arranged, the first positioning groove is formed between one end of the positioning column and the nail head of the positioning nail, the other end of the positioning column is fixedly or detachably connected to the brake auxiliary arm, and the positioning nail is fixedly or detachably connected to the positioning column; A pair of ear plates are provided on the bracket; A positioning through hole is respectively arranged on any one of the ear plates, and both ends of the shaft are respectively hinged to one of the positioning through holes, and the second positioning groove is recessed at the connection between one of the ear plates and the bracket.

8. The brake pedal assembly according to claim 6, characterized in that: Also included is a limit block with adjustable position; The limit block is movably arranged on the bracket, wherein the brake auxiliary arm has a head end and a tail end, the limit block is located between the brake auxiliary arm and the bracket, and the head end is located between the tail end and the limit block.

Images