Automobile brake pedal position sensing device and automobile brake system

Abstract

The utility model provides an automobile brake pedal position sensing device which comprises a printed circuit board assembly, a support and an elastic ring, one end of the support is connected with the printed circuit board assembly and used for fixing the printed circuit board assembly on a valve block, a plurality of convex ribs are arranged on the outer surface of the support, the elastic ring is arranged outside the support in a sleeving mode, and the elastic ring is arranged on the outer surface of the support. The elastic ring and the convex rib are arranged at intervals in the length direction of the support and used for reducing the gap between the elastic ring and the valve block, and the purpose is to improve the installation stability of the automobile brake pedal position sensing device and prevent the sensing sensitivity from being reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile braking, in particular to an automobile brake pedal position sensing device and an automobile braking system. Background Art

[0002] At present, most cars use hydraulic brake systems. The principle is that when the driver steps on the brake pedal, the brake master cylinder generates hydraulic pressure and transmits it to the wheel cylinder, pushing the wheel cylinder piston to move and make the caliper hold the brake disc tightly, thus achieving car braking. The brake motor pedal position sensor is a key component of the brake system and is easily affected by complex working environments. For example, when the brake motor is working, it may cause the brake motor pedal position sensor to vibrate or move, affecting the sensitivity of the sensor. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a vehicle brake pedal position sensing device, the purpose of which is to improve the installation stability of the vehicle brake pedal position sensing device and avoid a decrease in sensing sensitivity.

[0004] The utility model provides an automobile brake pedal position sensing device, comprising a printed circuit board assembly, a bracket and an elastic ring, one end of the bracket is connected to the printed circuit board assembly, and is used to fix the printed circuit board assembly on a valve block, a plurality of convex ribs are provided on the outer surface of the bracket, the elastic ring is sleeved outside the bracket, and the elastic ring and the convex ribs are spaced apart along the length direction of the bracket, and are used to reduce the gap between the bracket and the valve block.

[0005] In one embodiment, a protective shell for protecting the printed circuit board assembly is further included, wherein the protective shell includes a shell body and a protective cover, wherein the shell body has an open cavity for accommodating the printed circuit board assembly, and the protective cover is detachably connected to the shell body for closing or opening the open cavity.

[0006] In one embodiment, an elastic structure is further included, and the elastic structure is used to elastically connect the protective shell and the motor to reduce the influence of the motor vibration on the printed circuit board assembly.

[0007] In one embodiment, the elastic structure includes a connecting plate and a plurality of elastic members, wherein the connecting plate is arranged along the circumference of the shell body. When the protective cover is connected to the shell body, the connecting plate is flush with the protective cover, and the plurality of elastic members are used to connect the connecting plate and the motor.

[0008] In one embodiment, the connection plate is formed with a plurality of avoidance holes, the plurality of elastic members are arranged in one-to-one correspondence with the plurality of avoidance holes, and the avoidance holes are used to avoid elastic deformation of the elastic members due to force.

[0009] In one embodiment, the elastic member includes a spring sheet and a protrusion, the protrusion is disposed in the avoidance hole, the spring sheet is connected to the connecting plate, and extends from the connecting plate to the avoidance hole until it is connected to the protrusion.

[0010] In one embodiment, a through groove is formed on one side of the connecting plate connected to the shell body, and the through groove is used to prevent the protective cover from being connected to the shell body.

[0011] In one embodiment, it further comprises a plurality of anti-rotation posts, which are arranged on the protective shell and are used to be plugged into the valve block to limit the rotation of the protective shell relative to the valve block.

[0012] In one embodiment, the protective cover has a first clamping piece, and the shell body has a second clamping piece arranged to cooperate with the first clamping piece. The first clamping piece is clamped with the second clamping piece to fix the protective cover to the shell body.

[0013] The utility model also provides an automobile braking system, comprising a valve block, a control unit, a contact spring and the automobile brake pedal position sensor as described above, wherein the automobile brake pedal position sensor is fixed to the valve block, and the automobile brake pedal position sensor is connected to the control unit via the contact spring.

[0014] The automobile brake pedal position sensor device provided by the utility model has a printed circuit board assembly connected to a bracket, and an elastic ring and a convex rib are arranged at both ends of the bracket to eliminate the gap between the bracket and the valve block, and the convex rib can also increase the friction of the bracket, so that the bracket is installed in the valve block more compactly and stably. In addition, the elastic ring can also have a buffering effect on the bracket, reduce the impact of vibration on the bracket, and ensure the relative stability of the printed circuit board assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a structural schematic diagram of a first perspective of a vehicle brake pedal position sensing device according to the first embodiment of the utility model.

[0017] Figure 2 for Figure 1 Schematic diagram of the structure of the automobile brake pedal position sensing device from another perspective.

[0018] Figure 3 This is a schematic structural diagram of an automobile braking system according to a second embodiment of the utility model. DETAILED DESCRIPTION

[0019] The following will describe in detail a specific embodiment of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the description 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.

[0020] In the description of the present utility model, unless otherwise clearly specified and limited, the terms "set", "install", "connection" and the like 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0021] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0022] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0023] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0024] First embodiment

[0025] Please refer to Figure 1-2 An embodiment of the utility model on one hand provides an automobile brake pedal position sensing device, including a printed circuit board assembly 10, a bracket 20 and an elastic ring 30, one end of the bracket 20 is connected to the printed circuit board assembly 10, and is used to fix the printed circuit board assembly 10 on the valve block A, a plurality of convex ribs 21 are provided on the outer surface of the bracket 20, and the elastic ring 30 is sleeved outside the bracket 20, and the elastic ring 30 and the convex ribs 21 are spaced apart along the length direction of the bracket 20, so as to reduce the gap between the bracket 20 and the valve block A.

[0026] Specifically, the printed circuit board assembly 10 (PCBA assembly) is the core sensing component of the automobile brake pedal position sensing device. It is necessary to keep the printed circuit board assembly 10 stably fixed on the valve block A to avoid failure of the sensing function. A plurality of convex ribs 21 are arranged on the outer surface of the bracket 20, which can increase the diameter width of the bracket 20 and increase the friction force in contact with the valve block A. The elastic ring 30 has the characteristic of being deformable. The elastic ring 30 is sleeved on the outside of the bracket 20. When the bracket 20 is installed in the valve block A, the elastic ring 30 is deformed and applies a restoring force to the bracket 20, so that the bracket 20 is fixed on the valve block A more firmly. The elastic ring 30 and the convex ribs 21 are arranged at opposite ends of the bracket 20, which can make the constraint of the bracket 20 in the valve block A more balanced.

[0027] Furthermore, the elastic ring 30 is an O-ring, and an O-ring groove is provided on the bracket 20 to limit the position of the O-ring to prevent the O-ring from moving on the bracket 20 and causing the automobile brake pedal position sensing device to move, thereby affecting the stability of the printed circuit board assembly 10.

[0028] In this embodiment, a plurality of ribs 21 extend axially and are circumferentially distributed along the bracket 20 .

[0029] In this embodiment, a protective shell 40 for protecting the printed circuit board assembly 10 is further included. The protective shell 40 includes a shell body 41 and a protective cover 42. The shell body 41 has an open cavity for accommodating the printed circuit board assembly 10. The protective cover 42 is detachably connected to the shell body 41 for closing or opening the open cavity.

[0030] Specifically, adding a protective shell 40 outside the printed circuit board assembly 10 can prevent the printed circuit board assembly 10 from directly contacting the valve block A and the motor B, thereby reducing the impact of other components and factors on the printed circuit board assembly 10.

[0031] Furthermore, the shell body 41 has an opening for exposing the printed circuit board assembly 10, so as to facilitate the inspection or replacement of the printed circuit board assembly 10, and the protective cover 42 is used to cover the opening of the shell body 41 when the printed circuit board assembly 10 needs to be protected. The direct and detachable connection between the protective cover 42 and the shell body 41 can facilitate the covering and separation of the protective cover 42.

[0032] In this embodiment, an elastic structure 50 is further included. The elastic structure 50 is used to connect the protective shell 40 and the motor B to reduce the influence of the vibration of the motor B on the printed circuit board assembly 10.

[0033] Specifically, the vibration generated by the motor B during operation also affects the adjacent structures, especially the printed circuit board assembly 10 which is close to the motor B, and is easily affected by the vibration and other adverse consequences such as failure of the sensing function. An elastic structure 50 is provided on the protective shell 40 for protecting the printed circuit board assembly 10. When the protective shell 40 is vibrated, the elastic structure 50 is deformed to buffer the vibration force exerted on the protective shell 40.

[0034] In this embodiment, the elastic structure 50 includes a connecting plate 51 and a plurality of elastic members 52. The connecting plate 51 is arranged along the circumference of the shell body 41. When the protective cover 42 is connected to the shell body 41, the connecting plate 51 is flush with the protective cover 42. The plurality of elastic members 52 are arranged on the connecting plate 51. The plurality of elastic members 52 are used to connect the connecting plate 51 and the motor.

[0035] Specifically, the connecting plate 51 is perpendicular to the opening of the connecting shell body 41. When the protective cover 42 is covered on the opening of the shell body 41, the connecting plate 51 and the protective cover 42 are flush, ensuring a smooth connection between the protective shell 40 and the motor B. At the same time, the connecting plate 51 also increases the contact area between the protective shell 40 and other components, avoids unstable connection, and reduces the impact of vibration.

[0036] In this embodiment, the connection plate 51 is formed with a plurality of avoidance holes 511 , and the plurality of elastic members 52 are arranged in one-to-one correspondence with the plurality of avoidance holes 511 . The avoidance holes 511 are used to avoid elastic deformation of the elastic members 52 due to force.

[0037] Specifically, the avoidance hole 511 provides space for the movement of the elastic member 52 , so that the elastic member 52 can pass through the avoidance hole 511 after being subjected to force, thereby generating deformation, thereby buffering the vibration force.

[0038] In this embodiment, the elastic member 52 includes a spring sheet 521 and a protrusion 522 . The protrusion 522 is disposed in the avoidance hole 511 . The spring sheet 521 is connected to the connecting plate 51 and extends from the connecting plate 51 to the avoidance hole 511 until it is connected to the protrusion 522 .

[0039] Specifically, the spring piece 521 is in the shape of a long strip, one end of which is connected to the hole wall of the avoidance hole 511 and the other end is not in contact with the connecting plate 51. The protrusion 522 is connected to the spring piece 521. In the natural state (the spring piece 521 is not subjected to force), the protrusion 522 is higher than the plane of the connecting plate 51 and the protective cover 42.

[0040] In this embodiment, a through slot 512 is formed on one side of the connecting plate 51 connected to the shell body 41 . The through slot 512 is used to prevent the protective cover 42 from being connected to the shell body 41 .

[0041] Furthermore, the protective cover 42 has a connecting ear for connecting with the shell body 41 .

[0042] Specifically, the connecting ear passes through the through slot 512 and is connected to the shell body 41 . The through slot 512 can wrap the connecting ear after the protective cover 42 is fixed to the shell body 41 , thereby adding a layer of protection against the connection ear falling off.

[0043] In this embodiment, a plurality of anti-rotation posts 60 are further included. The plurality of anti-rotation posts 60 are disposed on the protective shell 40. The anti-rotation posts 60 are used to be plugged into the valve block to limit the rotation of the protective shell 40 relative to the valve block.

[0044] In this embodiment, the protective cover 42 has a first clamping member 421 , and the shell body 41 has a second clamping member 411 matched with the first clamping member 421 . The first clamping member 421 is clamped with the second clamping member 411 to fix the protective cover 42 to the shell body 41 .

[0045] Furthermore, the first clamping piece is arranged on the connecting ear.

[0046] In the automobile brake pedal position sensing device provided in this embodiment, the printed circuit board assembly 10 is connected to the bracket 20, and the gap between the bracket 20 and the valve block A is eliminated by arranging elastic rings 30 and convex ribs 21 at both ends of the bracket 20, and the convex ribs 21 can also increase the friction of the bracket 20, so that the bracket 20 is installed in the valve block A more compact and stable. In addition, the elastic ring 30 can also have a buffering effect on the bracket 20, reduce the impact of vibration on the bracket 20, and ensure the relative stability of the printed circuit board assembly 10.

[0047] Second embodiment

[0048] Please refer to Figure 3 Another aspect of the present invention provides an automobile brake system, including a valve block A, a control unit (ECU, not shown in the figure), a contact spring C and the automobile brake pedal position sensing device 100 as described in the first embodiment, wherein the automobile brake pedal position sensing device 100 is fixed to the valve block A, and the automobile brake pedal position sensing device 100 is connected to the control unit via the contact spring C.

[0049] Specifically, the printed circuit board assembly 10 (PCBA) in the automobile brake pedal position sensing device 100 senses the position signal of the motor B, and transmits the relevant signal to the control unit (ECU) through the contact spring C for control.

[0050] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the attached claims.

Claims

1. A vehicle brake pedal position sensing device, characterized in that: The invention comprises a printed circuit board assembly (10), a bracket (20) and an elastic ring (30); one end of the bracket (20) is connected to the printed circuit board assembly (10) and is used to fix the printed circuit board assembly (10) on the valve block; a plurality of convex ribs (21) are provided on the outer surface of the bracket (20); the elastic ring (30) and the convex ribs (21) are arranged at intervals along the length direction of the bracket (20) and are used to reduce the gap between the bracket (20) and the valve block.

2. The automobile brake pedal position sensing device according to claim 1, characterized in that: The invention also comprises a protective shell (40) for protecting the printed circuit board assembly (10), wherein the protective shell (40) comprises a shell body (41) and a protective cover (42), wherein the shell body (41) has an open cavity for accommodating the printed circuit board assembly (10), and the protective cover (42) is detachably connected to the shell body (41) for closing or opening the open cavity.

3. The automobile brake pedal position sensing device according to claim 2, characterized in that: It also includes an elastic structure (50) for elastically connecting the protective shell (40) and the motor to reduce the influence of the motor vibration on the printed circuit board assembly (10).

4. The automobile brake pedal position sensing device according to claim 3, characterized in that: The elastic structure (50) comprises a connecting plate (51) and a plurality of elastic members (52); the connecting plate (51) is arranged along the circumference of the shell body (41); when the protective cover (42) is connected to the shell body (41), the connecting plate (51) is flush with the protective cover (42); and the plurality of elastic members (52) are used to connect the connecting plate (51) and the motor.

5. The automobile brake pedal position sensing device according to claim 4, characterized in that: The connecting plate (51) is formed with a plurality of avoidance holes (511), the plurality of elastic members (52) are arranged in a one-to-one correspondence with the plurality of avoidance holes (511), and the avoidance holes (511) are used to avoid elastic deformation of the elastic members (52) due to force.

6. The automobile brake pedal position sensing device according to claim 5, characterized in that: The elastic member (52) comprises a spring sheet (521) and a protrusion (522), wherein the protrusion (522) is arranged in the avoidance hole (511), and the spring sheet (521) is connected to the connecting plate (51) and extends from the connecting plate (51) to the avoidance hole (511) until it is connected to the protrusion (522).

7. The automobile brake pedal position sensing device according to claim 4, characterized in that: A through slot (512) is provided on one side of the connecting plate (51) connected to the shell body (41), and the through slot (512) is used to prevent the protective cover (42) from being connected to the shell body (41).

8. The automobile brake pedal position sensing device according to claim 3, characterized in that: It also includes a plurality of anti-rotation columns (60), which are arranged on the protective shell (40) and are used to be plugged into the valve block to limit the rotation of the protective shell (40) relative to the valve block.

9. The automobile brake pedal position sensing device according to claim 3, characterized in that: The protective cover (42) has a first clamping piece (421), and the shell body (41) has a second clamping piece (411) arranged in cooperation with the first clamping piece (421). The first clamping piece (421) is clamped with the second clamping piece (411) to fix the protective cover (42) to the shell body (41).

10. An automobile braking system, characterized in that: It comprises a valve block (A), a control unit, a contact spring (C) and an automobile brake pedal position sensing device (100) as described in any one of claims 1 to 9, wherein the automobile brake pedal position sensing device (100) is fixed to the valve block (A), and the automobile brake pedal position sensing device (100) is connected to the control unit via the contact spring (C).

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