EMB force sensor for electronic braking

Abstract

The invention discloses an EMB force sensor for electronic braking, which comprises a protective cover and a base, the protective cover and the base are both made of metal materials, the base is provided with a circuit board and a silicon strain gauge, the silicon strain gauge is arranged on the base by a glass micro-melting technology, and the silicon strain gauge is electrically connected with the circuit board. According to the invention, the silicon strain gauge is fixed on the metal base by a glass micro-melting technology, so that the strain of the metal is realized, and the precision of measuring the brake holding force is high.

Description

Technical Field

[0001] This invention relates to force sensors, specifically an EMB force sensor for electronic braking. Background Technology

[0002] The EMB force sensor used in automobiles is an electronic sensor that measures the force of the brake pads gripping the brakes for precise braking. Compared to hydraulic sensors, it offers faster response, shorter braking distance, and eliminates the need for hydraulic pressure. Summary of the Invention

[0003] To address the shortcomings of the prior art, this invention provides an EMB force sensor for electronic braking. This invention fixes a silicon strain gauge onto a metal base using glass micro-fusion technology to measure the strain of the metal, resulting in high accuracy in measuring the brake clamping force.

[0004] To achieve the above technical objectives, the present invention adopts the following technical solution: an EMB force sensor for electronic braking, comprising a protective cover and a base, both of which are made of metal. The base is provided with a circuit board and a silicon strain gauge. The silicon strain gauge is mounted on the base using glass micro-fusion technology, and the silicon strain gauge is electrically connected to the circuit board.

[0005] The protective cover includes an outer ring cover and an inner ring tube, which are coaxially arranged and externally fixedly connected.

[0006] The outer edge of the opening of the outer ring cover is provided with an annular groove, and the base is provided with a convex ring, which is embedded in the annular groove.

[0007] One end of the inner ring tube is flush with the outer ring cover, and the other end extends beyond the outer ring cover, with the extended portion extending into the central hole of the base.

[0008] The edge of the extended portion is provided with an inclined angle to engage with the inclined surface of the center hole of the base.

[0009] The base includes a seat body, one surface of which is provided with a protruding ring for engaging with the annular groove of the protective cover, and the seat body is also provided with a central hole for accommodating the inner annular tube of the protective cover.

[0010] The space formed by the convex ring and the base is used to install the circuit board and the silicon strain gauge.

[0011] An outer ring is formed on the outer side of the convex ring.

[0012] In summary, the present invention has achieved the following technical effects: This invention fixes a silicon strain gauge onto a metal base using glass micro-fusion technology, thereby achieving the measurement of metal strain and providing high accuracy in measuring brake clamping force. Attached Figure Description

[0013] Figure 1 It is an EMB force sensor used in electronic braking; Figure 2 yes Figure 1 A cross-sectional schematic diagram; Figure 3 This is a schematic diagram of the protective cover; Figure 4 This is a schematic diagram of the base; Figure 5 yes Figure 2 A magnified view of a portion of the image. Detailed Implementation

[0014] The present invention will be further described in detail below with reference to the accompanying drawings.

[0015] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0016] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0018] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0019] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0020] Example: Figure 1 It is an EMB force sensor used in electronic braking. Figure 2 yes Figure 1 A cross-sectional schematic diagram includes a protective cover 1 and a base 2. Both the protective cover 1 and the base 2 are made of metal. The base 2 is equipped with a circuit board 3 and a silicon strain gauge 4. The silicon strain gauge 4 is mounted on the base 2 using glass micro-fusion technology. The silicon strain gauge 4 is electrically connected to the circuit board 3. An output line 5 is also provided.

[0021] This invention fixes a silicon strain gauge onto a metal base using glass micro-fusion technology, thereby achieving the measurement of metal strain and providing high accuracy in measuring brake clamping force.

[0022] Figure 3 This is a diagram of the protective cover. Figure 4 This is a diagram of the base. Figure 5 yes Figure 2 The enlarged schematic diagram shows that the protective cover 1 includes an outer ring cover 11 and an inner ring tube 12, which are coaxially arranged and fixedly connected externally.

[0023] The protective cover 1 of this invention is made of metal and has high strength. The outer ring cover is used to cover the circuit board and strain gauge, and the inner ring tube is used to extend into the center hole of the base for fixed connection.

[0024] The outer ring cover 11 has an annular groove 13 at the outer edge of its opening, and the base 2 has a protruding ring 22, which is embedded in the annular groove 13.

[0025] The protective cover and the base are connected by a protruding ring 22 and an annular groove 13 to prevent water from entering.

[0026] One end of the inner ring tube 12 is flush with the outer ring cover 11, and the other end extends beyond the outer ring cover 11, with the extended portion extending into the central hole 25 of the base 2.

[0027] The edge of the extended portion is provided with an inclination angle of 14, which cooperates with the inclined surface 26 of the center hole 25 of the base 2.

[0028] The two oblique angles cooperate with each other to form a limit with the convex ring 22 and the annular groove 13.

[0029] The base 2 includes a seat body 21, one surface of which is provided with a protruding ring 22 for engaging with the annular groove 13 of the protective cover 1. The seat body 21 is also provided with a central hole 25 for accommodating the inner annular tube 12 of the protective cover 1.

[0030] The space formed by the convex ring 22 and the seat 21 is used to install the circuit board 3 and the silicon strain gauge 4.

[0031] This space, together with the protective cover, forms a sealed space to prevent water and dust from entering, and also serves to confine the circuit board.

[0032] An outer ring 23 is formed on the outer side of the convex ring 22. The diameter of the protective cover is smaller than the diameter of the base, making it easy to install on the vehicle body.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the scope of the technical solution of the present invention.

Claims

1. An EMB force sensor for electronic braking, characterized in that: Includes a protective cover (1) and a base (2), both of which are made of metal. The base (2) is equipped with a circuit board (3) and a silicon strain gauge (4). The silicon strain gauge (4) is mounted on the base (2) using glass micro-fusion technology. The silicon strain gauge (4) is electrically connected to the circuit board (3).

2. The EMB force sensor for electronic braking according to claim 1, characterized in that: The protective cover (1) includes an outer ring cover (11) and an inner ring tube (12), the outer ring cover (11) and the inner ring tube (12) are coaxially arranged and fixedly connected externally.

3. An EMB force sensor for electronic braking according to claim 2, characterized in that: The outer ring cover (11) has an annular groove (13) at the outer edge of the opening, and the base (2) has a convex ring (22) embedded in the annular groove (13).

4. An EMB force sensor for electronic braking according to claim 2, characterized in that: One end of the inner ring tube (12) is flush with the outer ring cover (11), and the other end extends beyond the outer ring cover (11), with the extended portion extending into the central hole (25) of the base (2).

5. An EMB force sensor for electronic braking according to claim 4, characterized in that: The edge of the extended portion is provided with an inclination angle (14) to cooperate with the inclined surface (26) of the center hole (25) of the base (2).

6. An EMB force sensor for electronic braking according to claim 1, characterized in that: The base (2) includes a seat body (21), one surface of which is provided with a protruding ring (22) for engaging with the annular groove (13) of the protective cover (1), and the seat body (21) is also provided with a central hole (25) for accommodating the inner annular tube (12) of the protective cover (1).

7. An EMB force sensor for electronic braking according to claim 6, characterized in that: The space formed by the convex ring (22) and the seat (21) is used to install the circuit board (3) and the silicon strain gauge (4).

8. An EMB force sensor for electronic braking according to claim 6, characterized in that: An outer ring (23) is formed on the outer side of the convex ring (22).

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