Wheel speed sensing device

Abstract

The invention discloses a wheel speed sensing device. The wheel speed sensing device may include: a wheel speed sensor including a sensor body having a built-in first sensor element for sensing the wheel speed of a vehicle and a first lead frame electrically connected to the first sensor element and extending to the outside of the sensor body; a first cable including a first wire electrically connected to the first lead frame and a first cover surrounding the first wire; and a first connection member configured to surround the first lead frame and an end portion of the first lead wire exposed to one end of the first cable so as to overlap the first lead frame, and to fix the first lead frame and the first lead wire in a contact state.

Description

Technical Field

[0001] The present invention relates to a wheel speed sensing device, and more particularly to a wheel speed sensor for detecting the rotation speed of a wheel of a vehicle. Background Art

[0002] Various devices are installed on the vehicle to improve the stability of driving and braking. For example, the vehicle is equipped with an anti-lock brake system (ABS) and a traction control system (TCS) to prevent wheel slip, an electronic stability program (ESP) to control the vehicle's posture, a continuous damping control system (CDC) as a suspension device, and an electric power steering system (EPS) to assist steering.

[0003] These devices receive signals from various sensors such as yaw rate sensor, steering angle sensor, wheel speed sensor, brake pressure sensor, lateral acceleration sensor, etc. for control. Among them, the wheel speed sensor is the core sensor that transmits the vehicle wheel speed signal, and most electronic control units (ECUs) use the sensing information of the wheel speed sensor. The signal measured by the wheel speed sensor can determine whether ABS, TCS, etc. are running or not.

[0004] The wheel speed sensor must be connected to a cable to provide power and transmit signals. Generally, the wheel speed sensor consists of an IC chip with a lead frame, and the wires of the cable must be connected to the lead frame. Traditionally, welding and other methods are used, but there are problems in ensuring connection quality and process efficiency.

[0005] In addition, there is an increasing need to configure two wheel speed sensors for each wheel of a vehicle to improve sensing accuracy, reliability or ensure redundancy. Therefore, it is necessary to develop a sensor mounting technology that can stably align the two wheel speed sensors while providing ease of assembly and space efficiency so that the two wheel speed sensors can operate stably.

[0006] Patent document: Korean Patent Publication No. 10-2023-0003975, "Wheel Speed ​​Sensor Device", (Published on January 6, 2023)

[0007] Summary of the invention

[0008] Problem that the invention aims to solve

[0009] The present invention aims to solve the above-mentioned problem, and an object of the present invention is to provide a wheel speed sensing device capable of effectively connecting a wheel speed sensor and a cable.

[0010] Another object of the present invention is to provide a wheel speed sensor device, wherein a wheel speed sensor bracket on which the wheel speed sensor is placed exposes a lead frame of the wheel speed sensor to the outside, thereby being able to effectively achieve connection between a cable and the lead frame.

[0011] Another object of the present invention is to provide a wheel speed sensor device which can easily achieve connection between a lead frame of a wheel speed sensor and a cable in a state where the cable and a connecting member are coupled to a cable bracket.

[0012] Still another object of the present invention is to provide a wheel speed sensing device that can effectively align a plurality of wheel speed sensors and connect them to cables.

[0013] Still another object of the present invention is to provide a wheel speed sensing device that can effectively realize the configuration and alignment of multiple cables.

[0014] The problems of the present invention are not limited to the problems mentioned above, and a person skilled in the art will clearly understand other problems not mentioned through the following description.

[0015] Means used to solve problems

[0016] According to one aspect of the present invention, there is provided a wheel speed sensing device, comprising: a wheel speed sensor, comprising a sensor body having a first sensor element for sensing a vehicle wheel speed built therein and a first lead frame electrically connected to the first sensor element and extending to the outside of the sensor body; a first cable, comprising a first wire electrically connected to the first lead frame and a first covering member surrounding the first wire; and a first connecting member, configured to surround the first lead frame and an end portion of the first wire exposed to one end of the first cable so as to overlap with the first lead frame, and to fix the first lead frame and the first wire in a contact state.

[0017] In a wheel speed sensor device according to one aspect of the present invention, the first connection member may include: a first connection body; and a first connection port that penetrates one side and the other side of the first connection body and is provided for the first lead frame and one end of the first wire to overlap.

[0018] In the wheel speed sensing device according to one aspect of the present invention, the first connection body may be in a square box shape, and the first connection port may be in a square shape.

[0019] In a wheel speed sensor device according to one aspect of the present invention, the wheel speed sensor also includes: a second lead frame electrically connected to the first sensor element and extending to the outside of the sensor body, and the wheel speed sensor device may also include: a second cable including a second wire electrically connected to the second lead frame and a second covering member surrounding the second wire; and a second connecting member configured to surround the second lead frame and an end portion of the second wire exposed to one end of the second covering member to overlap with the lead frame, and to fix the second lead frame and the second wire in a contact state.

[0020] In the wheel speed sensing device according to one aspect of the present invention, the first connecting member and the second connecting member may be arranged side by side.

[0021] The wheel speed sensor device according to one aspect of the present invention may further include: a wheel speed sensor bracket on which the wheel speed sensor is placed.

[0022] In the wheel speed sensor device according to one aspect of the present invention, the wheel speed sensor bracket may include: a placement portion on which the sensor body is placed; and a support portion connected to the placement portion and supporting the first lead frame and the second lead frame.

[0023] In the wheel speed sensor device according to one aspect of the present invention, the length of the support portion may be shorter than the lengths of the first lead frame and the second lead frame.

[0024] The wheel speed sensor device according to one aspect of the present invention may further include: a cable bracket on which the first cable and the second cable are placed.

[0025] In the wheel speed sensor device according to one aspect of the present invention, the first connecting member and the second connecting member may be fixedly disposed on the cable bracket.

[0026] In a wheel speed sensor device according to one aspect of the present invention, the cable bracket includes a connecting portion having a first through-hole and a second through-hole, the first through-hole and the second through-hole being configured to have the first lead frame and the second lead frame respectively inserted through the front and one end of the first wire and the second wire respectively inserted through the rear, and the first connecting member and the second connecting member are fixedly arranged inside the first through-hole and the second through-hole, respectively.

[0027] In the wheel speed sensor device according to one aspect of the present invention, the cable bracket includes a cable supporting portion connected to the rear of the connecting portion and extending in a manner capable of supporting the first cable and the second cable.

[0028] The wheel speed sensing device according to one aspect of the present invention may further include: an additional covering member configured to surround the first cable and the second cable at the rear of the cable support portion.

[0029] In the wheel speed sensing device according to one aspect of the present invention, the cable holder includes an additional covering member supporting portion connected to the rear of the cable supporting portion, and the additional covering member is placed and supported by the additional covering member supporting portion.

[0030] According to another aspect of the present invention, a wheel speed sensing device is provided, comprising: a wheel speed sensor, comprising a sensor body having a first sensor element and a second sensor element for sensing a wheel speed of a vehicle built therein, a first lead frame and a second lead frame electrically connected to the first sensor element and extending to the outside of the sensor body, a third lead frame and a fourth lead frame electrically connected to the second sensor element and extending to the outside of the sensor body; a first cable, comprising a first wire electrically connected to the first lead frame and a first covering member surrounding the first wire; a second cable, comprising a second wire electrically connected to the second lead frame and a second covering member surrounding the second wire; a third cable, comprising a third wire electrically connected to the third lead frame and a third covering member surrounding the third wire; a fourth cable, comprising a fourth wire electrically connected to the fourth lead frame and a fourth covering member surrounding the fourth wire; a first connecting member, configured to surround the first lead frame and an end portion of the first wire exposed to one end of the first cable so as to overlap with the first lead frame, and to connect the first lead frame to the first cable; the first lead frame and the first wire are fixed in a contact state; a second connecting member configured to surround the second lead frame and one end of the second wire exposed to one end of the second cable so as to overlap with the second lead frame, and fix the second lead frame and the second wire in a contact state; a third connecting member configured to surround the third lead frame and one end of the third wire exposed to one end of the third cable so as to overlap with the third lead frame, and fix the third lead frame and the third wire in a contact state; a fourth connecting member configured to surround the fourth lead frame and one end of the fourth wire exposed to one end of the fourth cable so as to overlap with the fourth lead frame, and fix the fourth lead frame and the fourth wire in a contact state; and a cable holder including a connecting portion having first to fourth through-holes, the first to fourth through-holes being configured to have the first to fourth lead frames respectively inserted through the front and the ends of the first to fourth wires respectively inserted through the rear.

[0031] In a wheel speed sensor device according to another aspect of the present invention, the first to fourth connecting members may be fixedly disposed in the first to fourth through openings, respectively.

[0032] In the wheel speed sensing device according to another aspect of the present invention, the first to fourth connecting members may be arranged side by side.

[0033] In a wheel speed sensor device according to another aspect of the present invention, the first connecting member may include: a first connecting body; and a first connecting port, which passes through one side and the other side of the first connecting body and is provided for overlapping configuration of the first lead frame and one end of the first wire, and the second to fourth connecting members may respectively include second to fourth connecting bodies corresponding to the first connecting body and the second to fourth connecting ports corresponding to the first connecting port.

[0034] In the wheel speed sensing device according to another aspect of the present invention, the first connection body may be in a square box shape, and the first connection port may be in a square shape.

[0035] The wheel speed sensor device according to another aspect of the present invention may further include: a wheel speed sensor bracket on which the wheel speed sensor is placed.

[0036] In a wheel speed sensor device according to another aspect of the present invention, the wheel speed sensor bracket may include: a placement portion on which the sensor body is placed; and a support portion connected to the placement portion and supporting the first to fourth lead frames.

[0037] In the wheel speed sensor device according to another aspect of the present invention, the length of the support portion may be shorter than the length of the first to fourth lead frames.

[0038] In a wheel speed sensor device according to another aspect of the present invention, the cable bracket further includes a cable supporting portion connected to the rear of the connecting portion and extending in a manner capable of supporting the first to fourth cables.

[0039] The wheel speed sensing device according to another aspect of the present invention may further include: an additional covering member configured to surround the first to fourth cables at the rear of the cable supporting portion.

[0040] In the wheel speed sensing device according to another aspect of the present invention, the first to fourth cables may be arranged in two rows and two columns inside the additional cover member.

[0041] In the wheel speed sensing device according to another aspect of the present invention, the cable bracket further includes an additional covering member supporting portion connected to the rear of the cable supporting portion, and the additional covering member is placed and supported by the additional covering member supporting portion.

[0042] In the wheel speed sensing device according to another aspect of the present invention, the bottom surface of the cable supporting portion may further include a portion inclined upward from the additional covering member supporting portion side toward the connecting portion side.

[0043] Effects of the Invention

[0044] According to the above configuration, the wheel speed sensing device according to one aspect of the present invention can effectively realize the connection between the wheel speed sensor and the cable through the connecting member.

[0045] Furthermore, the wheel speed sensing device according to one aspect of the present invention easily achieves connection between the cable and the lead frame by the wheel speed sensor holder configured to expose the lead frame of the wheel speed sensor to the outside.

[0046] Furthermore, the wheel speed sensor device according to one aspect of the present invention can effectively connect the wheel speed sensor and the cable by inserting the lead frame of the wheel speed sensor into the connecting member in a state where the cable and the connecting member are coupled to the cable holder.

[0047] Furthermore, the wheel speed sensing device according to one aspect of the present invention can effectively realize the connection between the plurality of sensor elements and the plurality of cables, and the arrangement and alignment of the plurality of cables by adding the cover member and the cable holder.

[0048] It should be understood that the effects of the present invention are not limited to the above-mentioned effects, and include all effects that can be inferred from the configuration of the invention described in the detailed description of the present invention or the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 1 is a front perspective view of a wheel speed sensor device according to an embodiment of the present invention.

[0050] Figure 2 It is a rear perspective view of a wheel speed sensor device according to an embodiment of the present invention.

[0051] Figure 3 This is a diagram showing a wheel speed sensor device according to an embodiment of the present invention with a housing removed.

[0052] Figure 4 1 is a diagram showing a state in which a wheel speed sensor and a cable are separated in a wheel speed sensor device according to an embodiment of the present invention.

[0053] Figure 5The present invention is a diagram showing a wheel speed sensor and a wheel speed sensor bracket in a separated state in a wheel speed sensor device according to an embodiment of the present invention.

[0054] Figure 6 1 is a diagram showing a combined state of a cable, a connecting member, and a cable bracket of a wheel speed sensor device according to an embodiment of the present invention.

[0055] Figure 7 1 is a diagram showing a state in which a cable and a cable holder of a wheel speed sensor device according to an embodiment of the present invention are separated.

[0056] Figure 8 It is a top perspective view of a connecting member of a wheel speed sensor device according to an embodiment of the present invention.

[0057] Fig. 9 1 is a bottom perspective view of a connecting member of a wheel speed sensor device according to an embodiment of the present invention.

[0058] Fig.10 2 is a longitudinal sectional view of a wheel speed sensor device according to an embodiment of the present invention.

[0059] Fig.11 It is a longitudinal cross-sectional perspective view of a cable bracket of a wheel speed sensor device according to an embodiment of the present invention.

[0060] Fig.12 It is a diagram showing a modified example of a wheel speed sensor and a wheel speed sensor bracket of a wheel speed sensor device according to an embodiment of the present invention.

[0061] Description of Reference Numerals

[0062] 100: Wheel speed sensor

[0063] 110: Wheel speed sensor 120: Wheel speed sensor bracket

[0064] 130a: first cable 130b: second cable

[0065] 130c: third cable 130d: fourth cable

[0066] 140: Additional covering member 150a: First connecting member

[0067] 150b: second connecting member 150c: third connecting member

[0068] 150d: fourth connecting member 160: cable bracket

[0069] 170: Shell DETAILED DESCRIPTION

[0070] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. The present invention can be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly illustrate the present invention, parts not related to the description are omitted from the accompanying drawings, and the same reference numerals are assigned to the same or similar components throughout the specification.

[0071] The words and terms used in this specification and claims should not be interpreted as being limited to their usual or dictionary meanings, but in order to best explain one's invention, they should be interpreted as meanings and concepts corresponding to the technical ideas of the present invention in accordance with the principle that the inventor is able to define terms and concepts.

[0072] In this specification, the terms "including" or "having" are used to illustrate the existence of features, numbers, steps, actions, constituent elements, parts or their combinations recorded in the specification, rather than excluding the existence or additional possibilities of one or more other features, numbers, steps, actions, constituent elements, parts or their combinations in advance.

[0073] Figure 1 1 is a front perspective view of a wheel speed sensor device according to an embodiment of the present invention. Figure 2 2 is a rear perspective view of a wheel speed sensor device according to an embodiment of the present invention. Figure 3 FIG. 1 is a diagram showing a wheel speed sensor device according to an embodiment of the present invention with the housing removed. Figure 4 FIG. 1 is a diagram showing a wheel speed sensor and a cable separated from each other in a wheel speed sensor device according to an embodiment of the present invention.

[0074] The wheel speed sensing device 100 of an embodiment of the present invention can sense the rotation of a tone wheel or encoder combined with a vehicle wheel. The tone wheel or encoder rotates with the vehicle wheel, and the wheel speed sensing device 100 of an embodiment of the present invention can sense the rotation speed of the tone wheel or encoder.

[0075] Reference Figures 1 to 4 The wheel speed sensing device 100 according to an embodiment of the present invention may include a wheel speed sensor 110, a wheel speed sensor bracket 120, first to fourth cables 130a, 130b, 130c, 130d, an additional covering member 140, first to fourth connecting members 150a, 150b, 150c, 150d, a cable bracket 160 and a housing 170.

[0076] The wheel speed sensor 110 may include a sensor body 111 and first to fourth lead frames 112 a , 112 b , 112 c , 112 d .

[0077] A first sensor element 111a and a second sensor element 111b for sensing a wheel speed of a vehicle (not shown) may be built into the sensor body 111. The first sensor element 111a and the second sensor element 111b may sense a tone wheel or an encoder that rotates with the wheel of the vehicle. For example, the first sensor element 111a and the second sensor element 111b may be Hall sensors.

[0078] In one embodiment of the present invention, the first sensor element 111a and the second sensor element 111b may be arranged side by side inside the sensor body 111. More specifically, the first sensor element 111a and the second sensor element 111b may be arranged side by side inside the sensor body 111 along the horizontal direction.

[0079] The first sensor element 111a and the second sensor element 111b may be respectively composed of separate dies. In addition, the sensor body 111 may be constituted by assembling two dies into one or molding them into one.

[0080] The first lead frame 112a and the second lead frame 112b are electrically connected to the first sensor element 111a and extend to the outside of the sensor body 111. The first lead frame 112a can connect the first sensor element 111a and a power source. In addition, the second lead frame 112b can transmit the sensing information of the first sensor element 111a to the outside (e.g., ECU).

[0081] Different from this, the first lead frame 112 a may transmit sensing information of the first sensor element 111 a to the outside, and the second lead frame 112 b may be connected to a power source.

[0082] The first lead frame 112a and the second lead frame 112b may be arranged side by side. More specifically, the first lead frame 112a and the second lead frame 112b may be arranged side by side in a horizontal direction. In addition, the first lead frame 112a and the second lead frame 112b may have the same length.

[0083] The third lead frame 112c and the fourth lead frame 112d are electrically connected to the second sensor element 111b and extend to the outside of the sensor body 111. The third lead frame 112c can connect the second sensor element 111b and a power source. In addition, the fourth lead frame 112d can transmit the sensing information of the second sensor element 111b to the outside (e.g., ECU).

[0084] Different from this, the third lead frame 112 c may transmit sensing information of the second sensor element 111 b to the outside, and the fourth lead frame 112 d may be connected to a power source.

[0085] The third lead frame 112c and the fourth lead frame 112d may be arranged side by side. More specifically, the third lead frame 112c and the fourth lead frame 112d may be arranged side by side in a horizontal direction. In addition, the third lead frame 112c and the fourth lead frame 112d may have the same length.

[0086] The first to fourth lead frames 112a, 112b, 112c, and 112d may be arranged side by side in a horizontal direction. In addition, the first to fourth lead frames 112a, 112b, 112c, and 112d may have the same length as each other.

[0087] As described above, when the wheel speed sensor 110 is configured to have the first sensor element 111a and the second sensor element 111b built into a sensor body 111, the space required for configuring the two sensor elements can be minimized. In addition, the configuration of the two sensor elements can also be completed through a single process. As a result, space efficiency can be improved and assembly can be made easier.

[0088] The wheel speed sensor bracket 120 accommodates the wheel speed sensor 110 . The wheel speed sensor 110 may be placed on the wheel speed sensor bracket 120 .

[0089] Figure 5 The present invention is a diagram showing a wheel speed sensor and a wheel speed sensor bracket in a separated state in a wheel speed sensor device according to an embodiment of the present invention.

[0090] Reference Figure 5 The wheel speed sensor bracket 120 may include a placement portion 121 and a support portion 122 .

[0091] The placement portion 121 accommodates the sensor body 111. The sensor body 111 may be placed on the placement portion 121. In one embodiment of the present invention, the placement portion 121 may include a sensor placement plate 121a on which the bottom surface of the sensor body 111 is placed and a sensor support side wall 121b protruding toward the upper side of the sensor placement plate 121a to support the side of the sensor body 111. The sensor support side wall 121b may be provided to surround the remaining portion of the side of the sensor body 111 except for the portion where the lead frame extends.

[0092] The support portion 122 is connected to the placement portion 121. The support portion 122 supports the first to fourth lead frames 112a, 112b, 112c, 112d. The length of the support portion 122 may be shorter than the length of the first to fourth lead frames 112a, 112b, 112c, 112d. Thus, when the wheel speed sensor bracket 120 is brought close to the cable bracket 160 side described later in order to connect the first to fourth lead frames 112a, 112b, 112c, 112d with the first to fourth cables 130a, 130b, 130c, 130d, no interference occurs, and the connection between the lead frames and the cables can be easily performed.

[0093] The support portion 122 may include a lead frame support plate 122a and a plurality of lead frame support side walls 122b, 122c, and 122d. The lead frame support plate 122a supports the first to fourth lead frames 112a, 112b, 112c, and 112d, and the plurality of lead frame support side walls 122b, 122c, and 122d protrude toward the upper side of the lead frame support plate 122a between the first lead frame 112a and the second lead frame 112b, between the second lead frame 112b and the third lead frame 112c, and between the third lead frame 112c and the fourth lead frame 112d to support the side surfaces of the first to fourth lead frames 112a, 112b, 112c, and 112d.

[0094] The plurality of lead frame support side walls 122b, 122c, 122d may be formed to have a lower width wider than an upper width. This structure ensures that the first to fourth lead frames 112a, 112b, 112c, 112d can easily enter the lead frame support plate 122a side from the upper side of the lead frame support plate 122a. In addition, this structure ensures that after the wheel speed sensor 110 is placed on the wheel speed sensor bracket 120, the first to fourth lead frames 112a, 112b, 112c, 112d are stably supported.

[0095] In one embodiment of the present invention, the wheel speed sensor bracket 120 may have more than one side beam 123. The side beam 123 may be configured to extend in the lateral direction from both sides of the placement portion 121 or the support portion 122. For example, the side beam 123 may be configured to extend in the lateral direction from both sides of the lead frame support plate 122a. The side beam 123 may be used to fix the inside of the mold when molding the housing 170.

[0096] Figure 6 1 is a diagram showing the combined state of the cable, the connecting member and the cable bracket of the wheel speed sensor device according to one embodiment of the present invention. Figure 71 is a diagram showing a state in which a cable and a cable holder of a wheel speed sensor device according to an embodiment of the present invention are separated.

[0097] Reference Figure 6 and Figure 7 The first cable 130a includes a first wire 131a electrically connected to the first lead frame 112a and a first cover 132a surrounding the first wire 131a. The second cable 130b includes a second wire 131b electrically connected to the second lead frame 112b and a second cover 132b surrounding the second wire 131b.

[0098] The first wire 131a can be used to supply power. The second wire 131b can also be used to transmit signals. Different from this, the first wire 131a can be used to transmit signals, and the second wire 131b is used to supply power.

[0099] The first cover 132a insulates the first conductive wire 131a from the outside. In addition, the second cover 132b insulates the second conductive wire 131b from the outside.

[0100] One end of the first wire 131a is exposed to one end of the first cable 130a. One end of the first wire 131a exposed to one end of the first cable 130a is connected to the first lead frame 112a. In one embodiment of the present invention, one end of the first wire 131a can overlap with the first lead frame 112a.

[0101] One end of the second wire 131b is exposed to one end of the second cable 130b. One end of the second wire 131b exposed to one end of the second cable 130b is connected to the second lead frame 112b. In one embodiment of the present invention, one end of the second wire 131b can overlap with the second lead frame 112b.

[0102] Reference Figure 6 and Figure 7 The third cable 130c includes a third wire 131c electrically connected to the third lead frame 112c and a third cover 132c surrounding the third wire 131c. The fourth cable 130d includes a fourth wire 131d electrically connected to the fourth lead frame 112d and a fourth cover 132d surrounding the fourth wire 131d.

[0103] The third wire 131c can be used to supply power. The fourth wire 131d can also be used to transmit signals. Different from this, the third wire 131c can be used to transmit signals, and the fourth wire 131d is used to supply power.

[0104] The third cover 132c insulates the second conductive line 131c from the outside. In addition, the fourth cover 132d insulates the fourth conductive line 131d from the outside.

[0105] One end of the third wire 131c is exposed to one end of the third cable 130c. One end of the third wire 131c exposed to one end of the third cable 130c is connected to the third lead frame 112c. In one embodiment of the present invention, one end of the third wire 131c can overlap with the third lead frame 112c.

[0106] One end of the fourth wire 131d is exposed to one end of the fourth cable 130d. One end of the fourth wire 131d exposed to one end of the fourth cable 130d is connected to the fourth lead frame 112d. In one embodiment of the present invention, one end of the fourth wire 131d may overlap with the fourth lead frame 112d.

[0107] On the other hand, one end of the first to fourth wires 131a, 131b, 131c, 131d exposed at one end of the first to fourth cables 130a, 130b, 130c, 130d can be configured in a pressed state. More specifically, since the contact surface of the first to fourth lead frames 112a, 112b, 112c, 112d is formed flat, one end of the first to fourth wires 131a, 131b, 131c, 131d exposed at one end of the first to fourth cables 130a, 130b, 130c, 130d can be pressed in a square shape to increase the contact area.

[0108] The additional covering member 140 is arranged in such a manner as to surround the first to fourth cables 130a, 130b, 130c, 130d. The additional covering member 140 may have a cylindrical shape.

[0109] Reference Figure 6 and Figure 7 , inside the additional cover member 140 , the first to fourth cables 130 a , 130 b , 130 c , and 130 d may be arranged in two rows and two columns.

[0110] When the first to fourth cables 130a, 130b, 130c, 130d are respectively connected to the outside of the wheel speed sensing device 100, twisting, interference, etc. between the cables may occur. The additional covering member 140 improves the wiring efficiency between the wheel speed sensing device 100 and the external power source or ECU by making the first to fourth cables 130a, 130b, 130c, 130d into one composite cable.

[0111] The first to fourth cables 130a, 130b, 130c, 130d may be exposed to one end of the additional covering member 140. That is, the first to fourth cables 130a, 130b, 130c, 130d are exposed to one end of the additional covering member 140. In addition, the first to fourth wires 131a, 131b, 131c, 131d may be exposed from one ends of the first to fourth cables 130a, 130b, 130c, 130d exposed to one end of the additional covering member 140, respectively.

[0112] If described based on the cable holder 160 described later, the additional covering member 140 may be arranged to surround the first to fourth cables 130 a , 130 b , 130 c , and 130 d behind the cable support portion 162 of the cable holder 160 .

[0113] The first connection member 150a is configured to surround the first lead frame 112a and one end of the first wire 131a. One end of the first wire 131a is exposed to one end of the first cable 130a to overlap with the first lead frame 112a. The first connection member 150a fixes the first lead frame 112a and the first wire 131a in a contact state.

[0114] Figure 8 1 is a top perspective view of a connecting member of a wheel speed sensor device according to an embodiment of the present invention. Fig. 9 1 is a bottom perspective view of a connecting member of a wheel speed sensor device according to an embodiment of the present invention.

[0115] Reference Figure 8 and Fig. 9 The first connection member 150a may include a first connection body 151a and a first connection port 152a that passes through one side and the other side of the first connection body 151a and is provided for the first lead frame 112a and one end of the first wire 131a to overlap. In this case, the first connection body 151a may be in a square box shape, and the first connection port 152a may be in a square shape.

[0116] Inside the first connection port 152a, the first lead frame 112a and one end of the first wire 131a are stacked in an overlapping manner, and the first lead frame 112a and the first wire 131a can be fixed in a contact state by the first connection body 151a. As described above, since the first lead frame 112a and one end of the first wire 131a have a square bar shape, the contact state can be effectively maintained inside the first connection port 152a having a square shape.

[0117] The second connection member 150b is configured to surround the second lead frame 112b and one end of the second wire 131b. One end of the second wire 131b is exposed to one end of the second cable 130b to overlap with the second lead frame 112b. The second connection member 150b fixes the second lead frame 112b and the second wire 131b in a contact state.

[0118] The third connection member 150c is configured to surround the third lead frame 112c and one end of the third wire 131c. One end of the third wire 131c is exposed to one end of the third cable 130c to overlap with the third lead frame 112c. The third connection member 150c fixes the third lead frame 112c and the third wire 131c in a contact state.

[0119] The fourth connection member 150d is configured to surround the fourth lead frame 112d and one end of the fourth wire 131d. One end of the fourth wire 131d is exposed to one end of the fourth cable 130d to overlap with the fourth lead frame 112d. The fourth connection member 150d fixes the fourth lead frame 112d and the fourth wire 131d in a contact state.

[0120] Reference Figure 8 and Fig. 9 , the second to fourth connection members 150b, 150c, 150d may respectively have a connection body corresponding to the first connection body 151a and a connection port corresponding to the first connection port 152a. That is, the second to fourth connection members 150b, 150c, 150d may respectively have a second to fourth connection body 151b, 151c, 151d and a second to fourth connection port 152b, 152c, 152d. At this time, the second to fourth connection bodies 151b, 151c, 151d may be in a square box shape, and the second to fourth connection ports 152b, 152c, 152d may be in a square shape.

[0121] In one embodiment of the present invention, the first to fourth connecting members 150a, 150b, 150c, 150d may be arranged side by side, thereby effectively achieving connection between the first to fourth lead frames 112a, 112b, 112c, 112d and the first to fourth wires 131a, 131b, 131c, 131d.

[0122] Fig.10 is a longitudinal sectional view of a wheel speed sensor device according to an embodiment of the present invention.

[0123] Reference Fig.10In one embodiment of the present invention, the first connecting member 150a is fixedly configured to the connecting portion 161 of the cable holder 160 to be described later in a state of being inserted into one end of the first wire 131a of the first cable 130a. More specifically, the cable holder 160 may be manufactured by double injection molding in a state where the first cable 130a and the first connecting member 150a are combined. During the injection molding process, the upper end and the lower end of the connecting member 150a may be buried in the connecting portion 161 of the cable holder 160.

[0124] In this regard, the first connection member 150a may include a first upper through hole 153a penetrating the upper surface of the first connection port 152a and a first lower through hole 154a penetrating the lower surface of the first connection port 152a. When the cable holder 160 is double-molded in a state where the first cable 130a is combined with the first connection member 150a, the first upper through hole 153a and the first lower through hole 154a increase the contact area between the connection portion 161 and the first connection member 150a. Thus, the first connection member 150a can be stably fixed to the connection portion 161 of the cable holder 160.

[0125] On the other hand, the second connecting member to the fourth connecting member 150b, 150c, 150d may include a second upper side through opening to a fourth upper side through opening 153b, 153c, 153d that passes through the upper surface of the second connecting port to the fourth connecting port 152b, 152c, 152d and a second lower side through opening to a fourth lower side through opening 154b, 154c, 154d that passes through the lower surface of the second connecting port to the fourth connecting port 152b, 152c, 152d.

[0126] When the cable holder 160 is double-molded in a state where the second to fourth cables 130b, 130c, 130d and the second to fourth connecting members 150b, 150c, 150d are combined, the second to fourth upper through-holes 153b, 153c, 153d and the second to fourth lower through-holes 154b, 154c, 154d increase the contact area between the connecting portion 161 and the second to fourth connecting members 150b, 150c, 150d. Thus, the second to fourth connecting members 150b, 150c, 150d can be stably fixed to the connecting portion 161 of the cable holder 160.

[0127] The cable support 160 supports the first to fourth cables 130 a , 130 b , 130 c , and 130 d . In other words, the first to fourth cables 130 a , 130 b , 130 c , and 130 d may be placed on the cable support 160 .

[0128] Reference Figure 6 and Figure 7 The cable holder 160 may include a connecting portion 161 , a cable supporting portion 162 , and an additional covering member supporting portion 163 .

[0129] As described above, the cable holder 160 may be manufactured by double injection molding in a state where the first to fourth cables 130a, 130b, 130c, 130d and the first to fourth connecting members 150a, 150b, 150c, 150d are combined. At this time, the first to fourth connecting members 150a, 150b, 150c, 150d may be fixedly configured on the cable holder 160. For example, Fig.10 As shown, the first to fourth connecting members 150 a , 150 b , 150 c , and 150 d may be buried in the cable support 160 .

[0130] The connection portion 161 includes first through openings to fourth through openings 161a, 161b, 161c, 161d, which are configured to have the first lead frame 112a, 112b, 112c, 112d inserted through the front and the first lead wire 131a, 131b, 131c, 131d inserted through the rear. The connection portion 161 may have a box shape as a whole. In addition, the first through opening to the fourth through opening 161a, 161b, 161c, 161d may penetrate the connection portion 161 in the front and rear and be arranged side by side with each other. More specifically, the first through opening to the fourth through opening 161a, 161b, 161c, 161d may be arranged side by side with each other in the horizontal direction.

[0131] The first to fourth connecting members 150a, 150b, 150c, 150d can be fixedly disposed in the first to fourth through openings 161a, 161b, 161c, 161d, respectively. That is, they can be fixedly disposed in the first to fourth through openings 161a, 161b, 161c, 161d. As described above, the first to fourth connecting members 150a, 150b, 150c, 150d can be buried in the first to fourth through openings 161a, 161b, 161c, 161d, respectively.

[0132] The cable support portion 162 extends in a manner capable of supporting the first to fourth cables 130 a , 130 b , 130 c , 130 d . The cable support portion 162 may be connected to the rear of the connection portion 161 .

[0133] The cable support portion 162 may include: a cable support plate 162a, configured to support the first to fourth cables 130a, 130b, 130c, 130d from the bottom side; and cable support side walls 162b, extending upward from both sides of the cable support plate 162a so as to be able to support the sides of the first to fourth cables 130a, 130b, 130c, 130d.

[0134] The additional covering member support portion 163 is connected to the rear of the cable support portion 162. The additional covering member support portion 163 supports the additional covering member 140. That is, the additional covering member 140 can be placed on and supported by the additional covering member support portion 163. The additional covering member support portion 163 can have an annular shape with an upper side open to surround a portion of the outer peripheral surface of the additional covering member 140.

[0135] Fig.11 It is a longitudinal cross-sectional perspective view of a cable bracket of a wheel speed sensor device according to an embodiment of the present invention.

[0136] Reference Fig.11 In one embodiment of the present invention, the bottom surface of the cable support portion 162 may include a portion that is inclined upward from the additional covering member support portion 163 side to the connection portion 161 side. In other words, the bottom surface of the cable support portion 162 may include a portion that is inclined downward from the front to the rear. In addition, the bottom surface of the cable support portion 162 may include a portion that is inclined upward from the rear to the front.

[0137] More specifically, the bottom surface of the cable support plate 162a of the cable support portion 162 may include a portion that is inclined upward from the additional cover member support portion 163 side to the connection portion 161 side. That is, the bottom surface of the cable support plate 162a may include a portion that is inclined downward from the front to the rear. In addition, the bottom surface of the cable support plate 162a may include a portion that is inclined upward from the rear to the front.

[0138] As described above, the first to fourth cables 130a, 130b, 130c, 130d may be arranged in two rows and two columns inside the additional cover member 140. On the other hand, the first to fourth through openings 161a, 161b, 161c, 161d may be arranged side by side in the horizontal direction.

[0139] like Figure 4 and Figure 6As shown, the first cable 130a and the fourth cable 130d arranged on the upper side are arranged on the same horizontal plane as the first through-opening 161a, 161b, 161c, 161d of the connecting portion 161, and thus can easily enter the first through-opening 161a and the fourth through-opening 161d, respectively. However, in the case of the second cable 130b and the third cable 130c arranged on the lower side, since they are arranged at a position lower than the first through-opening 161a, 161b, 161c, 161d, the cables need to be bent upward to enter the second through-opening 161b and the third through-opening 161c.

[0140] pass Fig.10 It can be confirmed that when the bottom surface of the cable support plate 162a of the cable support portion 162 includes a portion that is inclined upward from the additional cover member support portion 163 side to the connection portion 161 side, the second cable 130b and the third cable 130c arranged on the lower side can be smoothly guided to the upper side. As a result, the second cable 130b and the third cable 130c can easily enter the second through hole 161b and the third through hole 161c.

[0141] In an embodiment of the present invention, the cable support 160 may have more than one side beam 164. The side beam 164 may be configured to extend in a lateral direction from both sides of the cable support portion 162. The side beam 164 may be used to fix the inside of the mold when molding the housing 170.

[0142] The housing 170 accommodates the wheel speed sensor 110 , the wheel speed sensor bracket 120 , the first to fourth cables 130 a , 130 b , 130 c , 130 d , the additional cover member 140 , the first to fourth connecting members 150 a , 150 b , 150 c , 150 d , and the cable bracket 160 .

[0143] The housing 170 may be formed by molding in a state in which the wheel speed sensor 110, the wheel speed sensor bracket 120, the first to fourth cables 130a, 130b, 130c, 130d, the additional covering member 140, the first to fourth connecting members 150a, 150b, 150c, 150d and the cable bracket 160 are combined.

[0144] In an embodiment of the present invention, the housing 170 may include a housing body 171 and a fastening member 172 .

[0145] The housing body 171 accommodates the wheel speed sensor 110 , the wheel speed sensor bracket 120 , the first to fourth cables 130 a , 130 b , 130 c , 130 d , the additional covering member 140 , the first to fourth connecting members 150 a , 150 b , 150 c , 150 d , and the cable bracket 160 therein.

[0146] The fastening member 172 is a portion for fastening a fastening member to be coupled, and the fastening member is used to fasten the wheel speed sensing device 100 to the vehicle body. The fastening member 172 is connected to the housing body 171 and may include a portion extending downward. In addition, the fastening member 172 may be provided with a through hole 173 for fastening the fastening member.

[0147] Fig.12 It is a diagram showing a modified example of a wheel speed sensor and a wheel speed sensor bracket of a wheel speed sensor device according to an embodiment of the present invention.

[0148] Reference Fig.12 In one embodiment of the present invention, the two sensor elements of the wheel speed sensor may not be arranged in a single sensor body, but may be arranged separately and independently.

[0149] A variation of an embodiment of the present invention may include a first wheel speed sensor 210a and a second wheel speed sensor 210b.

[0150] In a modified example, the first wheel speed sensor 210a may include: a first sensor body 212a in which the first sensor element 211a is disposed; and a first lead frame 213a and a second lead frame 214a electrically connected to the first sensor element 211a and extending to the outside of the first sensor body 212a.

[0151] In a modified example, the second wheel speed sensor 210b may include: a second sensor body 212b in which the second sensor element 211b is disposed; and a third lead frame 213b and a fourth lead frame 214b electrically connected to the second sensor element 211b and extending to the outside of the second sensor body 212b.

[0152] In a modified example, the wheel speed sensor bracket 220 may include a placement portion 221 and a support portion 222 .

[0153] The placement portion 221 accommodates the first wheel speed sensor 210 a and the second wheel speed sensor 210 b . The first wheel speed sensor 210 a and the second wheel speed sensor 210 b may be placed in the placement portion 221 .

[0154] In a variation of an embodiment of the present invention, the placement portion 221 may include: a sensor placement plate 221a, for placing the bottom surface of the first wheel speed sensor 210a and the second wheel speed sensor 210b; and a sensor support side wall 221b, which protrudes toward the upper side of the sensor placement plate 221a to support the side surfaces of the first wheel speed sensor 210a and the second wheel speed sensor 210b.

[0155] The sensor supporting sidewall 221b may be provided to surround the remaining portion of the side surfaces of the first wheel speed sensor 210a and the second wheel speed sensor 210b except for the portion where the lead frame extends.

[0156] In addition, the placement portion 221 may further include an intermediate wall 221c for separating the placement portions of the first wheel speed sensor 210a and the second wheel speed sensor 210b on the sensor placement plate 221a.

[0157] The support portion 222 is connected to the placement portion 221. The support portion 222 supports the first and second lead frames 213a and 214a and the third and fourth lead frames 213b and 214b. The length of the support portion 222 may be shorter than the length of the first and second lead frames 213a and 214a and the length of the third and fourth lead frames 213b and 214b.

[0158] The support portion 222 may include: a lead frame support plate 222a, supporting the first to fourth lead frames 213a, 214a, 213b, 214b; and a plurality of lead frame support side walls 222b, 222c, 222d, protruding toward the upper side of the lead frame support plate 222a between the first lead frame 213a and the second lead frame 214a, between the second lead frame 214a and the third lead frame 213a, and between the third lead frame 213b and the fourth lead frame 214b to support the sides of the first to fourth lead frames 213a, 214a, 213b, 214b.

[0159] In a modified example of an embodiment of the present invention, the wheel speed sensor bracket 220 may include more than one side beam 223. The side beam 223 may be configured to extend in a lateral direction from both sides of the placement portion 221 or the support portion 222. For example, the side beam 223 may be configured to extend in a lateral direction from both sides of the lead frame support plate 222a. The side beam 223 may be used to fix the inside of the mold when molding the housing.

[0160] Although the embodiments of the present invention have been described, the spirit of the present invention is not limited to the embodiments set forth in this specification, and those skilled in the art who understand the spirit of the present invention can easily propose other embodiments within the scope of the same spirit by adding, changing, deleting, adding, etc. to the constituent elements. However, this will also be considered to fall within the spirit of the present invention.

Claims

1. A wheel speed sensor device, characterized in that: include: The wheel speed sensor comprises a sensor body and a first lead frame, wherein a first sensor element for sensing a vehicle wheel speed is built into the sensor body, and the first lead frame is electrically connected to the first sensor element and extends to the outside of the sensor body. a first cable including a first wire electrically connected to the first lead frame and a first covering member surrounding the first wire, and The first connecting member is configured to surround the first lead frame and one end of the first wire, wherein the one end of the first wire is exposed to one end of the first cover to overlap with the first lead frame, and the first connecting member fixes the first lead frame and the first wire in a contact state.

2. The wheel speed sensor device according to claim 1, characterized in that: The first connecting member comprises: a first connection body, and The first connection port penetrates one side and the other side of the first connection body, and the first lead frame and one end of the first wire are overlapped and arranged at the first connection port.

3. The wheel speed sensor device according to claim 2, characterized in that: The first connection body is in a square box shape, and the first connection port is in a square shape.

4. The wheel speed sensor device according to claim 1, characterized in that: The wheel speed sensor also includes: a second lead frame electrically connected to the first sensor element and extending to the outside of the sensor body; The wheel speed sensor device also includes: a second cable including a second wire electrically connected to the second lead frame and a second covering member surrounding the second wire, and The second connecting member is configured to surround the second lead frame and one end of the second wire, and the one end of the second wire is exposed to one end of the second cover to overlap with the second lead frame. The second connecting member fixes the second lead frame and the second wire in a contact state.

5. The wheel speed sensor device according to claim 4, characterized in that: The first connecting member and the second connecting member are arranged side by side.

6. The wheel speed sensor device according to claim 4, characterized in that: Also includes: A wheel speed sensor bracket, on which the wheel speed sensor is placed; The wheel speed sensor bracket comprises: a placement portion on which the sensor body is placed, and A supporting portion is connected to the placement portion and supports the first lead frame and the second lead frame.

7. The wheel speed sensor device according to claim 6, characterized in that: The length of the support portion is shorter than lengths of the first lead frame and the second lead frame.

8. The wheel speed sensor device according to claim 4, characterized in that: Also included is a cable support on which the first cable and the second cable are placed, The first connecting member and the second connecting member are fixedly configured on the cable bracket.

9. The wheel speed sensor device according to claim 8, characterized in that: The cable holder includes a connecting portion having a first through hole and a second through hole, wherein the first through hole and the second through hole are configured to have the first lead frame and the second lead frame respectively inserted through the front and one end of the first wire and the second wire respectively inserted through the rear, and the first connecting member and the second connecting member are fixedly configured inside the first through hole and the second through hole, respectively.

10. The wheel speed sensor device according to claim 9, characterized in that: The cable support further comprises: The cable support portion is connected to the rear of the connection portion and extends in a manner capable of supporting the first cable and the second cable.

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