Drive-by-wire brake pedal structure

Abstract

The utility model provides a drive-by-wire brake pedal structure. The drive-by-wire brake pedal structure comprises a base part; one end of the pedal is rotatably connected to the base part through a rotating shaft; the position detection device comprises a bracket and two non-contact angle sensors; the bracket is fixed on the base part; the support is provided with two electric signal interfaces. The non-contact angle sensor is electrically connected with the electric signal interface; the detection parts of the two non-contact angle sensors are fixed on the bracket; a coil of the non-contact angle sensor is fixed at a rotating shaft; the permanent magnet of the other non-contact angle sensor is fixed at the rotating shaft; when the pedal is stressed to rotate around the rotating shaft, one non-contact angle sensor obtains position information of the pedal based on rotation of the coil, the other non-contact angle sensor obtains position information of the pedal based on rotation of the permanent magnet, and the position information of the pedal is output outwards through the electric signal interface. And therefore, the reliability and the safety of the drive-by-wire brake are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle parts and components, and in particular relates to a wire-controlled brake pedal structure. Background Art

[0002] Unlike the brake system of traditional fuel vehicles, the brake system of new energy vehicles cannot use the traditional vacuum booster pump for braking because it cannot use the vacuum of the engine. Almost all the brake systems of new energy vehicles are electrically assisted, that is, a set of electric boosters are used to replace the original vacuum booster pump. With the development and maturity of electronic control technology, wire-controlled brake systems have gradually become a trend. The wire-controlled brake system uses the electrical signal collected from the brake pedal to control the electronic brake system for braking. Unlike the electronic power-assisted brake system, the wire-controlled brake no longer just assists the driver in applying braking force, but uses the motor and transmission device alone to drive the brake, and the force on the driver's foot will not be transmitted to the brake drive device. This puts forward higher reliability requirements for the control system and the wire-controlled brake pedal. Therefore, how to design a wire-controlled brake structure with high reliability and high safety redundancy is an urgent problem to be solved in this field.

[0003] It should be noted that the information disclosed in the background technology section of this application is only intended to deepen the understanding of the general background technology of this application, and should not be regarded as an admission or suggestion in any form that the information constitutes prior art already known to those skilled in the art. Utility Model Content

[0004] The utility model aims to provide a wire-controlled brake pedal structure, aiming to improve the reliability and safety of the wire-controlled brake pedal.

[0005] To achieve the above object, the utility model provides a wire-controlled brake pedal structure, comprising:

[0006] base;

[0007] a pedal, one end of which is rotatably connected to the base via a rotating shaft; and

[0008] A position detection device, the position detection device comprising a bracket and two non-contact angle sensors; the bracket is fixed on the base; two electrical signal interfaces are provided on the bracket; the two non-contact angle sensors are electrically connected to the two electrical signal interfaces in a one-to-one correspondence;

[0009] Both of the non-contact angle sensors include a detection portion fixed on the bracket; one of the non-contact angle sensors also includes a coil fixed at the rotating shaft; the other non-contact angle sensor also includes a permanent magnet fixed at the rotating shaft;

[0010] When the pedal rotates around the rotating shaft, the detection part of one type of non-contact angle sensor can obtain the position information of the pedal based on the electrical signal generated by the rotation of the coil, and the detection part of another type of non-contact angle sensor can obtain the position information of the pedal based on the magnetic field signal generated by the rotation of the permanent magnet. The position information of the pedal is used to be output externally through the electrical signal interface.

[0011] Optionally, in the wire-controlled brake pedal structure, one end of the pedal is provided with a groove, and the groove divides the rotating shaft into two parts; the end of the pedal provided with the groove extends into the inner cavity of the base; the bracket includes an insertion part, and the insertion part passes through the positioning installation opening on the base to enter the inner cavity and is inserted into the groove;

[0012] The coil and the permanent magnet are both arranged in the groove and are respectively located on both sides of the groove along the rotation axis direction of the shaft;

[0013] The detection parts of the two types of non-contact angle sensors are fixed on the insertion part; the detection part of one type of non-contact angle sensor and the coil are located on the same side of the insertion part; the detection part of the other type of non-contact angle sensor and the permanent magnet are located on another same side of the insertion part.

[0014] Optionally, in the wire-controlled brake pedal structure, two opposite groove walls of the groove along the direction of the rotation axis are provided with depressions, and the coil and the permanent magnet are fixed in the depressions.

[0015] Optionally, in the wire-controlled brake pedal structure, the rotating shaft and the pedal are an integrally formed structure, and / or the detection parts of the two types of non-contact angle sensors are symmetrically arranged on both sides of the insertion portion.

[0016] Optionally, in the described wire-controlled brake pedal structure, the bracket also includes a fixing portion disposed at the top end of the insertion portion, the fixing portion being placed on the positioning mounting port and detachably connected to the base; the positioning mounting port limits the depth of the insertion portion inserted into the groove; the two electrical signal interfaces are disposed on the fixing portion and extend out of the base.

[0017] Optionally, in the wire-controlled brake pedal structure, at least two hooks are provided on a side of the fixing portion close to the insertion portion, and at least two of the hooks are engaged and connected with the inner cavity.

[0018] Optionally, in the wire-controlled brake pedal structure, the base is formed by a combination of a base and a bottom cover plate; the base and the bottom cover plate are combined to form an inner cavity, and a bearing is provided in the inner cavity; the inner cavity accommodates one end of the pedal and is rotatably connected to the rotating shaft through the bearing, and sleeves are provided at both ends of the rotating shaft.

[0019] Optionally, the wire-controlled brake pedal structure also includes an elastic buffer mechanism arranged on the base; the elastic buffer mechanism is used to store elastic potential energy when the pedal is pressed down and close to the elastic buffer mechanism; the elastic buffer mechanism is also used to release elastic potential energy when the pedal is released from force to push the pedal to reset.

[0020] Optionally, in the wire-controlled brake pedal structure, the elastic buffer mechanism includes a spring, a buffer block and a spring seat; the spring seat is fixed on the base; the buffer block is fixed on the spring seat; the spring is sleeved on the buffer block; one end of the spring is connected to the spring seat, and the other end of the spring is used to abut the pedal when the pedal is pressed down and close to the elastic buffer mechanism.

[0021] Optionally, in the described wire-controlled brake pedal structure, the detection part of each type of the non-contact angle sensor includes a circuit board and an angle sensor chip integrated on the circuit board; the circuit boards of the two types of the non-contact angle sensors are independently arranged; the angle sensor chip of one type of the non-contact angle sensor can obtain the position information of the pedal based on the rotation of the coil, and the angle sensor chip of the other type of the non-contact angle sensor can obtain the position information of the pedal based on the rotation of the permanent magnet; wherein; each type of the non-contact angle sensor includes one or more of the angle sensor chips.

[0022] Compared with the prior art, the wire-controlled brake pedal structure provided by the utility model has at least the following advantages:

[0023] The utility model provides a wire-controlled brake pedal structure, comprising: a base; a pedal, one end of the pedal is rotatably connected to the base through a rotating shaft; and a position detection device, the position detection device comprising a bracket and two non-contact angle sensors; the bracket is fixed to the base; two electrical signal interfaces are provided on the bracket; the two non-contact angle sensors are electrically connected to the two electrical signal interfaces in a one-to-one correspondence; the two non-contact angle sensors both include a detection part fixed to the bracket, one of the non-contact angle sensors also includes a coil fixed to the rotating shaft; the other non-contact angle sensor also includes a permanent magnet fixed to the rotating shaft; when the pedal is rotated around the rotating shaft under force, the detection part of one non-contact angle sensor can obtain the position information of the pedal based on the rotation of the coil, and the detection part of the other non-contact angle sensor can obtain the position information of the pedal based on the rotation of the permanent magnet, and the position information of the pedal is used to be output externally through the electrical signal interface.

[0024] With such a configuration, on the one hand, the position of the pedal is detected simultaneously by two different types of non-contact angle sensors, thus forming redundant detection. On the other hand, the two different non-contact angle sensors have different detection methods, which can effectively reduce the failure probability of pedal position detection and improve the reliability and safety of wire-controlled brakes. On the other hand, the use of non-contact angle sensors can easily achieve a compact structure without the introduction of intermediate connectors. Therefore, the reliability and safety are higher and the structural strength is also good.

[0025] In a further improvement, a groove is provided at one end of the pedal, and the groove divides the rotating shaft into two parts; the end of the pedal provided with the groove extends into the inner cavity of the base; the bracket includes an insertion part, and the insertion part passes through the positioning and mounting opening on the base to enter the inner cavity and is inserted into the groove; the coil and the permanent magnet are both arranged in the groove and are respectively located on both sides of the groove along the rotation axis direction of the rotating shaft; the detection parts of the two non-contact angle sensors are both fixed on the insertion part; the detection part of one non-contact angle sensor and the coil are located on the same side of the insertion part, and the detection part of the other non-contact angle sensor and the permanent magnet are located on the other same side of the insertion part. Through this implementation scheme, the two non-contact angle sensors can be arranged inside the rotating shaft and separately arranged on both sides of the groove. This sensor layout method makes the structure more compact and the volume of the entire device smaller, greatly improving the reliability and safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to better understand the present invention and do not constitute an improper limitation on the present invention.

[0027] Figure 1 It is a schematic diagram of the main structure of the wire-controlled brake pedal structure provided by the utility model according to one embodiment;

[0028] Figure 2 It is a three-dimensional structural schematic diagram of a wire-controlled brake pedal structure provided by the utility model according to an embodiment;

[0029] Figure 3 It is a left-side structural schematic diagram of a wire-controlled brake pedal structure provided by the utility model according to an embodiment;

[0030] Figure 4 It is a schematic diagram of a top view of a wire-controlled brake pedal structure provided by the utility model according to an embodiment;

[0031] Figure 5 is an exploded structural diagram of a wire-controlled brake pedal structure provided by the utility model according to an embodiment;

[0032] Figure 6 It is a partial structural schematic diagram of a wire-controlled brake pedal structure provided by the utility model according to an embodiment; it illustrates that the base provides the upper half of the bearing, the bottom cover plate provides the lower half of the bearing, and the base and the bottom cover plate are combined to form a complete base;

[0033] Figure 7 It is a partial structural schematic diagram of a pedal provided by the utility model according to an embodiment;

[0034] Figure 8 This is a schematic diagram of the structure of a bottom cover provided by the utility model according to an embodiment;

[0035] Fig. 9 It is a structural schematic diagram of a base provided by the utility model according to an embodiment;

[0036] Fig.10 is a schematic structural diagram of a bracket provided by the utility model according to an embodiment in a first orientation;

[0037] Fig.11 It is a schematic diagram of the structure of a bracket provided by the utility model according to an embodiment in a second orientation, and the first orientation is different from the second orientation;

[0038] Fig.12 It is a schematic structural diagram of a bracket and a pedal provided by the utility model in a second orientation when pre-assembled according to an embodiment;

[0039] Fig.13 This is a schematic structural diagram of a bracket and a pedal provided by the utility model in a first orientation when pre-assembled according to an embodiment;

[0040] Fig.14 It is a schematic cross-sectional structure diagram of a bracket, a base and a pedal provided by the utility model according to an embodiment when they are assembled.

[0041] [Description of reference numerals is as follows]:

[0042] 100-base; 101-bearing; 102-inner cavity; 103-positioning installation opening; 110-base; 120-bottom cover plate;

[0043] 200-pedal; 201-rotating shaft; 202-groove; 203-depression; 204-bushing; 210-pedal; 220-pedal arm;

[0044] 300-position detection device; 301-bracket; 302-electrical signal interface; 303-detection part; 304-coil; 305-permanent magnet; 306-insertion part; 307-fixing part; 308-buckle;

[0045] 400-elastic buffer mechanism; 401-spring; 402-buffer block; 403-spring seat. DETAILED DESCRIPTION

[0046] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the present invention in a schematic manner, so the diagram only shows the components related to the present invention rather than drawing according to the number, shape and size of the components in the actual implementation. The type, quantity and proportion of each component in the actual implementation can be a random change, and the component layout type may also be more complicated.

[0047] In addition, each embodiment of the following description has one or more technical features, but this does not mean that the user of the present invention must implement all the technical features in any embodiment at the same time, or can only implement part or all of the technical features in different embodiments separately. In other words, under the premise of being possible to implement, those skilled in the art can selectively implement part or all of the technical features in any embodiment according to the disclosure of the present invention and according to the design specifications or implementation requirements, or selectively implement a combination of part or all of the technical features in multiple embodiments, thereby increasing the flexibility of the implementation of the present invention.

[0048] As used in this specification, the singular forms "one", "an", and "the" include plural objects, and the plural form "a plurality" includes more than two objects, unless the content clearly indicates otherwise. As used in this specification, the term "or" is generally used in a sense that includes "and / or", unless the content clearly indicates otherwise, and the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium, and it can be a connection between two elements or an interactive relationship between two elements. Relational terms such as the terms "first", "second", etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor do they indicate or imply relative importance or implicitly indicate the number of technical features indicated. It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] The utility model aims to provide a wire-controlled brake pedal structure, which has the advantages of high reliability and high safety redundancy.

[0050] In order to make the purpose, advantages and features of the utility model clearer, the utility model is further described in detail below with reference to the accompanying drawings. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model.

[0051] Please refer to Figures 1 to 14The utility model provides a wire-controlled brake pedal structure, including: a base 100; a pedal 200, one end of which is rotatably connected to the base 100 through a rotating shaft 201; and a position detection device 300, which includes a bracket 301 and two non-contact angle sensors. The base 100 serves as the supporting part of the entire pedal structure and is used to install the pedal 200 and the position detection device 300. The specific structure of the base 100 is not particularly limited. The pedal 200 can be stepped on by the driver to generate a brake signal. Please refer to Figure 5 The pedal 200 mainly includes a pedal 210 and a pedal arm 220. The pedal 210 is set at one end of the pedal arm 220, and the other end of the pedal arm 220 is connected to the base 100 through a rotating shaft 201. Accordingly, the pedal 200 rotates relative to the base 100 based on the rotating shaft 201 provided therewith.

[0052] For the position detection device 300, it is fixed on the base 100 through the bracket 301. The fixing method between the bracket 301 and the base 100 can be detachable or non-detachable, and a detachable fixing method is more preferred. The detachable fixing method can be various commonly used detachable connection methods, such as threaded connection, pin connection, snap connection, etc., and a snap connection is particularly preferred, which is easy to install and disassemble, and can achieve tool-free disassembly.

[0053] The bracket 301 is also provided with two electrical signal interfaces 302, each of which has the functions of power supply, grounding and signal transmission, and the two non-contact angle sensors are electrically connected to the two electrical signal interfaces 302 in a one-to-one correspondence. In other words, each non-contact angle sensor consists of three wires, namely a power line, a ground line and a signal line.

[0054] Further, both non-contact angle sensors include a detection portion 303 (see Fig.10 and Fig.11 and Fig.14 ). Here, for the convenience of description, the detection parts 303 of the two non-contact angle sensors are marked with the same symbol, but it does not mean that the structures and functions of the detection parts 303 of the two non-contact angle sensors are the same. In more detail, the detection parts 303 of the two non-contact angle sensors are fixed on the bracket 301, and the fixed position of the detection parts 303 can be set as needed. In particular, considering that the detection parts 303 of the two non-contact angle sensors are symmetrically arranged, the compactness of the structure can be effectively improved, the weight can be reduced, and the cost can be reduced.

[0055] In addition, a non-contact angle sensor is an inductive sensor, which also includes a coil 304 fixed at the rotating shaft 201 (see Figure 5 , Fig.12 and Fig.13 ), this inductive sensor uses the change of the self-inductance or mutual inductance coefficient of the coil 304 to achieve non-contact measurement, specifically: the detection part 303 senses the position of the coil 304 through the induced current signal, and then determines the action of the pedal 200; and another non-contact angle sensor is a magnetic sensor, which also includes a permanent magnet 305 fixed at the rotating shaft 201 (see Figure 5 , Fig.12 and Fig.13 ), such a magnetic sensor can detect the angular position of the permanent magnet 305 mounted on the rotating shaft 201, thereby realizing non-contact measurement. The coil 304 and the permanent magnet 305 can both change their angles following the rotation of the rotating shaft 201. The shape and size of the coil 304 and the permanent magnet 305 are not limited, such as an annular or non-annular structure can be used, and this application does not limit this.

[0056] It is understandable that the detection part 303 of each non-contact angle sensor is physically separated from the components (such as the coil 304 and the permanent magnet 305) fixed to the rotating shaft 201, which facilitates the detection part 303 to be completely sealed, thereby eliminating the possibility of dust or moisture intrusion. The detection part 303 is sealed by a shell provided by the bracket 301 itself, or by glue sealing.

[0057] In some embodiments of the present application, the detection part 303 of each non-contact angle sensor includes a circuit board and an angle sensor chip integrated on the circuit board. This part can be focused on. Fig.11 and Fig.14 . It should be noted that the circuit boards of the two types of non-contact angle sensors are independently arranged without interfering with or affecting each other. The angle sensor chip of one type of non-contact angle sensor can obtain the position information of the pedal 200 based on the rotation of the coil 304, and the angle sensor chip of the other type of non-contact angle sensor can obtain the position information of the pedal 200 based on the rotation of the permanent magnet 305. Here, the angle sensor chips selected in this application are various commonly used angle measurement chips. Since it does not involve improvements to this part, those skilled in the art can select suitable existing angle measurement chips to obtain corresponding technical effects and realize corresponding functions. Specifically, those skilled in the art should be able to know how to set up magnetic sensors and inductive sensors based on the prior art, and understand their working principles. For this reason, this application will not describe them in detail.

[0058] It should also be noted that each non-contact angle sensor may include one or more angle sensor chips, and a plurality of angle sensor chips refers to 2 or more, and generally 2 is more appropriate. In addition, the circuit board is preferably a PCB board (printed circuit board).

[0059] The working mode of the wire-controlled brake pedal structure provided by the utility model is as follows: when the pedal 200 is rotated around the rotating shaft 201 by force, the detection part 303 of a non-contact angle sensor can obtain the position information (rotation angle) of the pedal 200 based on the rotation of the coil 304, specifically, the position of the coil 304 is obtained by induction current, and at the same time, the detection part 303 of another non-contact angle sensor can obtain the position information of the pedal 200 based on the rotation of the permanent magnet 305, that is, the angular position of the permanent magnet 305 is obtained based on the change of the magnetic field, and finally, the position information of the pedal 200 is output to the outside through the electrical signal interface 302. It should be noted that the position information of the pedal 200 monitored by the two non-contact angle sensors is output to the outside through a corresponding electrical signal interface 302, which improves the reliability of redundant detection.

[0060] Here, those skilled in the art should understand that when using the wire control technology, the position detection device 300 monitors the driver's braking intention to generate and transmit the braking signal, that is, the mechanical signal (rotation) of the brake pedal 200 is converted into an electric control signal, and the electric control signal is transmitted to the control system and the actuator. Specifically, the wire control technology can be understood by referring to the prior art, and this application will not explain it in detail.

[0061] It can be seen that in the wire-controlled brake pedal structure provided by the utility model, the angle sensor for detecting the position of the pedal 200 is set as two different types of non-contact angle sensors, which not only forms redundant detection of the pedal position, but also adopts two different position detection methods, which can effectively reduce the failure probability of the pedal position detection and greatly improve the reliability and safety of the wire-controlled brake. Furthermore, the use of non-contact angle sensors can easily achieve a compact structure without the introduction of intermediate connectors, so the reliability and safety are higher and the structural strength is also good.

[0062] Further, please refer to Figure 12 to Figure 14 , and combined with Figure 7 , Figure 10-11 In some preferred embodiments, a groove 202 is provided at one end of the pedal 200 (i.e., the end of the pedal arm 220 away from the pedal 210), and the groove 202 divides the rotating shaft 201 into two parts, which facilitates the installation of the detection parts 303 of the two non-contact angle sensors between the two parts of the rotating shaft 201.

[0063] It should be further explained that the rotating shaft 201 and the pedal 200 can be a separate molding structure. More preferably, the rotating shaft 201 and the pedal 200 are an integral molding structure (such as integral injection molding), which has good strength and low cost. Here, the integral molding structure refers to molding the rotating shaft 201 and the pedal 200 at one time, and the separate molding structure refers to molding the rotating shaft 201 and the pedal 200 separately and independently. In any case, the pedals 200 protrude from both ends of the rotating shaft 201 along the direction of its own rotation axis, and can then be rotatably connected to the bearing 101 on the base 100.

[0064] At the same time, one end of the pedal 200 provided with the groove 202 extends into the inner cavity 102 of the base 100. In addition, the bracket 301 preferably includes an insertion portion 306, which enters the inner cavity 102 of the base 100 through the positioning and mounting opening 103 on the base 100 and is inserted into the groove 202, so that the detection parts 303 of the two non-contact angle sensors can be arranged next to the coils 304 and permanent magnets 305 corresponding to each other. Preferably, the detection parts 303 can be arranged symmetrically or asymmetrically on both sides of the insertion part 306. Correspondingly, the coils 304 and the permanent magnets 305 are both arranged in the groove 202 and are respectively located on both sides of the groove 202 along the rotation axis direction of the shaft 201. In this way, the coils 304 and the permanent magnets 305 are arranged between the two divided parts of the shaft 201. Thus, the detection parts 303 of the two non-contact angle sensors are fixed on the insertion part 306, the detection part 303 of one non-contact angle sensor and its coil 04 are located on the same side of the insertion part 306, and the detection part 303 of the other non-contact angle sensor and the permanent magnet 305 are located on the other same side of the insertion part 306. In this embodiment, the two non-contact angle sensors are arranged inside the rotating shaft 201 and are separately arranged on both sides of the bracket 301 along the direction of the rotating axis. This layout makes the structure more compact and the volume of the entire device smaller, which greatly improves the reliability and safety of the vehicle.

[0065] For further information, please refer to Figure 12 to Figure 14 In some preferred embodiments, two opposite groove walls of the groove 202 along the rotation axis are provided with recesses 203, and the coil 304 and the permanent magnet 305 are fixed in the recesses 203. The provision of the recesses 203 provides convenience for installing the coil 304 and the permanent magnet 305 without occupying the internal space of the groove 202.

[0066] As mentioned above, the bracket 301 and the base 100 are preferably fixed in a detachable manner. Figure 5 , Figure 10-11 and Fig.14In some embodiments of the present application, the bracket 301 also includes a fixing portion 307, which is disposed at the top of the insertion portion 36. The fixing portion 307 is used to position and install the entire bracket 301, and is also used to be fixedly connected to the base 100. In a specific embodiment, the base 100 is provided with an inner cavity 102, and the inner cavity 102 is provided with a positioning mounting port 103 in a preset insertion direction. The setting direction of the positioning mounting port 103 is the same as or different from the setting direction of the pedal 200, preferably the same; the inner cavity 102 accommodates one end of the pedal 200 provided with a groove 202, and then the fixing portion 307 is placed on the positioning mounting port 103 and is detachably connected to the base 100, and the fixing portion 307 limits the depth of the insertion portion 306 into the groove 202, that is, after the insertion portion 306 passes through the positioning mounting port 103 and enters the inner cavity 102, it can be directly aligned with and inserted into the groove 202. During the insertion process, the positioning mounting port 102 can limit the depth of the insertion portion 306, thereby effectively ensuring the positioning accuracy of the position detection device 300. Thus, the positioning installation opening 103 supports the fixing portion 307, and the fixing portion 307 is preferably detachably connected to the base 100. As a more preferred solution, at least two hooks 308 are provided on one side of the fixing portion 307 close to the insertion portion 306 (see Fig.10 and Fig.11 ), at least two hooks 308 are engaged with the inner cavity 102, and the number of hooks 308 is not limited. For example, in this embodiment, four hooks 308 are arranged on the fixing portion 307, but in fact, two or three hooks 308 can also be used. Based on this, the two electrical signal interfaces 302 are arranged on the fixing portion 307 and are located on the side of the fixing portion 307 away from the insertion portion 306. The two electrical signal interfaces 302 need to protrude from the base 100.

[0067] In some embodiments of the present application, the base 100 is preferably formed by assembling a two-part structure, which facilitates the assembly of the pedal 200 and the position detection device 300. Specifically, the base 100 is formed by combining a base 110 and a bottom cover plate 120; wherein the base 110 and the bottom cover plate 120 are combined to form an inner cavity 102, and a bearing 101 is provided in the inner cavity 102 (with emphasis on Figures 6 to 9); the bearing 101 is in the form of a through hole, which is connected to the inner cavity 102. When assembling the base 100 and the pedal 200, first place the pedal 200, and then cover the base 110 and the bottom cover plate 120 at one end of the pedal 200. When covering, the upper half of the bearing 101 provided by the base 110 and the lower half of the bearing 101 provided by the bottom cover plate 120 are surrounded and sleeved on the rotating shaft 201, so that the rotating shaft 202 is rotatably connected to the bearing 101, and finally the base 110 and the bottom cover plate 120 are fixed. In addition, when assembling the position detection device 300, taking the embedded layout as an example, the bracket 301 is first installed into the base 110 and fixed. After that, the base 110 and the bracket 301 are assembled with the pedal 200 as a whole. It is only necessary to insert the insertion part 306 of the bracket 301 into the groove 202 of the pedal 200. After it is installed in place, the bottom cover plate 120 is covered, and finally the bottom cover plate 120 and the base 110 are fixed.

[0068] Please refer to Figure 5 Optionally, bushings 204 are provided at both ends of the rotating shaft 201. However, in other embodiments, the rotating shaft 201 may also choose not to use bushings 204. If bushings 204 are used, the bushings 204 are stuck in the bearings 101. When the pedal 200 rotates, the rotating shaft 201 continuously rubs against the bushings 204, thereby avoiding the continuous friction between the rotating shaft 201 and the bearing 101, and solving the problem of serious wear of the rotating shaft 201 after the pedal 200 is used for a long time. At the same time, the surface area of ​​the bushings 204 is larger, which can effectively support the rotating shaft 201, making it more stable and avoiding the problem of deformation of the rotating shaft 201. Preferably, the rotating shaft 201 is made of anti-slip material, which is conducive to reducing noise, such as rubber, PVC and other materials.

[0069] In some embodiments of the present application, the wire-controlled brake pedal structure further includes an elastic buffer mechanism 400 disposed on the base 100, the elastic buffer mechanism 400 is used to store elastic potential energy when the pedal 200 is pressed down close to the elastic buffer mechanism 400, and the elastic buffer mechanism 400 is also used to release the elastic potential energy when the pedal 200 is released from the force, so as to push the pedal 200 to reset. The elastic buffer mechanism 400 can have various structural forms, and in addition to the spring, other elastic structures can also be used to achieve elastic buffering. The following is an exemplary description.

[0070] Please focus on Figure 5 and Figure 6In an optional embodiment, the elastic buffer mechanism 400 includes a spring 401, a buffer block 402 and a spring seat 403; the spring seat 403 is fixed on the base 100, such as in the present embodiment, the spring seat 403 is fixed on the base 110; the buffer block 402 is fixed on the spring seat 403; the spring 401 is sleeved on the buffer block 402; one end of the spring 401 is connected to the spring seat 403, and the other end of the spring 401 is used to abut against the pedal 200 when the pedal 200 is pressed down and close to the elastic buffer mechanism 400. At this time, the pedal 200 overcomes the spring force and is pressed down.

[0071] To sum up, the beneficial effect of the wire-controlled brake pedal structure provided by the utility model is that the position of the pedal is detected simultaneously by two different types of non-contact angle sensors, forming redundant detection, and the two different non-contact angle sensors have different detection methods, which can effectively reduce the failure probability of pedal position detection and improve the reliability and safety of wire-controlled brakes. The use of non-contact angle sensors can easily achieve a compact structure without the introduction of intermediate connectors. Therefore, the reliability and safety are higher and the structural strength is also good.

[0072] In further improvements, the two non-contact angle sensors are symmetrically arranged on both sides of the bracket, especially combined with the high-strength rotating shaft fixing design, to achieve high reliability, and compact structure, light weight, low cost, can provide better interior space and weight reduction for vehicles using this technology, while the position detection with high reliability and high safety redundancy provides higher safety protection for the braking system.

[0073] Finally, it should be added that the wire-controlled brake pedal structure provided in this application can be applied to various vehicles, thereby improving the reliability and safety of the vehicle when using wire-controlled brake technology.

[0074] Although the utility model is disclosed as above, it is not limited thereto. Those skilled in the art may make various modifications and variations to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model is also intended to include these modifications and variations.

Claims

1. A wire-controlled brake pedal structure, characterized in that: include: base; A foot pedal, one end of which is rotatably connected to the base via a rotating shaft; as well as, A position detection device, the position detection device comprising a bracket and two non-contact angle sensors; the bracket is fixed on the base; two electrical signal interfaces are provided on the bracket; the two non-contact angle sensors are electrically connected to the two electrical signal interfaces in a one-to-one correspondence; Both of the non-contact angle sensors include a detection portion fixed on the bracket; one of the non-contact angle sensors also includes a coil fixed at the rotating shaft; the other non-contact angle sensor also includes a permanent magnet fixed at the rotating shaft; When the pedal is subjected to force to rotate around the rotating shaft, the detection part of one type of non-contact angle sensor can obtain the position information of the pedal based on the rotation of the coil, and the detection part of another type of non-contact angle sensor can obtain the position information of the pedal based on the rotation of the permanent magnet. The position information of the pedal is used to be output externally through the electrical signal interface.

2. The wire-controlled brake pedal structure according to claim 1, characterized in that: One end of the pedal is provided with a groove, and the groove divides the rotating shaft into two parts; the end of the pedal provided with the groove extends into the inner cavity of the base; the bracket includes an insertion part, and the insertion part passes through the positioning installation opening on the base, enters the inner cavity and is inserted into the groove; The coil and the permanent magnet are both arranged in the groove and are respectively located on both sides of the groove along the rotation axis direction of the shaft; The detection parts of the two types of non-contact angle sensors are fixed on the insertion part; the detection part of one type of non-contact angle sensor and the coil are located on the same side of the insertion part; the detection part of the other type of non-contact angle sensor and the permanent magnet are located on another same side of the insertion part.

3. The wire-controlled brake pedal structure according to claim 2, characterized in that: Both opposite groove walls of the groove along the direction of the rotation axis are provided with recesses, and the coil and the permanent magnet are fixed in the recesses.

4. The wire-controlled brake pedal structure according to claim 2, characterized in that: The rotating shaft and the pedal are an integrally formed structure, and / or the detection parts of the two types of non-contact angle sensors are symmetrically arranged on both sides of the insertion portion.

5. The wire-controlled brake pedal structure according to claim 2, characterized in that: The bracket also includes a fixing portion arranged at the top end of the insertion portion, the fixing portion is placed on the positioning mounting port and is detachably connected to the base; the positioning mounting port limits the depth of the insertion portion inserted into the groove; the two electrical signal interfaces are arranged on the fixing portion and extend out of the base.

6. The wire-controlled brake pedal structure according to claim 5, characterized in that: At least two hooks are provided on one side of the fixing portion close to the inserting portion, and at least two of the hooks are engaged and connected with the inner cavity.

7. The wire-controlled brake pedal structure according to claim 1 or 2, characterized in that: The base is formed by combining a base and a bottom cover plate; the base and the bottom cover plate are combined to form an inner cavity, and a bearing is provided in the inner cavity; the inner cavity accommodates one end of the pedal and is rotatably connected to the rotating shaft through the bearing, and bushings are provided at both ends of the rotating shaft.

8. The wire-controlled brake pedal structure according to claim 1 or 2, characterized in that: It also includes an elastic buffer mechanism arranged on the base; the elastic buffer mechanism is used to store elastic potential energy when the pedal is pressed down close to the elastic buffer mechanism; the elastic buffer mechanism is also used to release the elastic potential energy when the pedal is released from force to push the pedal to reset.

9. The wire-controlled brake pedal structure according to claim 8, characterized in that: The elastic buffer mechanism includes a spring, a buffer block and a spring seat; the spring seat is fixed on the base; the buffer block is fixed on the spring seat; the spring is sleeved on the buffer block; one end of the spring is connected to the spring seat, and the other end of the spring is used to abut the pedal when the pedal is pressed down and close to the elastic buffer mechanism.

10. The wire-controlled brake pedal structure according to claim 1 or 2, characterized in that: The detection part of each type of non-contact angle sensor includes a circuit board and an angle sensor chip integrated on the circuit board; the circuit boards of the two types of non-contact angle sensors are independently arranged; the angle sensor chip of one type of non-contact angle sensor can obtain the position information of the pedal based on the rotation of the coil, and the angle sensor chip of the other type of non-contact angle sensor can obtain the position information of the pedal based on the rotation of the permanent magnet; wherein each type of non-contact angle sensor includes one or more angle sensor chips.

Images