CN218512035U

CN218512035U - Chassis sensor assembly, chassis height detection device and vehicle

Info

Publication number: CN218512035U
Application number: CN202222597194.0U
Authority: CN
Inventors: 蔡国震; 唐翌
Original assignee: Continental Automotive Corp Lianyungang Co Ltd
Current assignee: Continental Automotive Corp Lianyungang Co Ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-02-21
Anticipated expiration: 2032-09-29

Abstract

The utility model discloses a chassis sensor assembly, which comprises a connecting unit, a swing arm unit, a chassis height sensor and an acceleration sensor, wherein the connecting unit comprises a body part, a connector arranged at one end of the body part and a fixing part arranged at the other end of the body part, the fixing part is bent and extended relative to the body part, and the fixing part is rotatably connected with one end of the swing arm unit; the chassis height sensor is arranged in the connecting unit and connected with the connector; the acceleration sensor is arranged on the connecting unit or the swing arm unit and is connected with the connector. The utility model provides a chassis sensor subassembly has integrateed chassis height sensor and acceleration sensor, guarantees both detectable chassis height, when the acceleration of detectable vehicle vertical direction again, has simplified sensor, pencil arrangement mode, has reduced pencil quantity. The utility model also discloses a chassis height detecting device and a vehicle.

Description

Chassis sensor assembly, chassis height detection device and vehicle

Technical Field

The utility model relates to the technical field of vehicles, in particular to chassis sensor assembly, chassis height detection device and vehicle.

Background

In an air suspension system, acceleration and ride height are two parameters that must be measured by an acceleration sensor and a ride height sensor, respectively, in order to control body height and body vibration and reduce variations in body position, thereby improving vehicle handling stability and ride comfort. The acceleration sensor is arranged on the suspension of the measuring chassis, and the acceleration of the wheel acts on the swing arm of the wheel along with the up-and-down jumping of the wheel, so that the vertical acceleration generated when the wheel is influenced by road conditions is measured. The chassis height sensor is installed on the chassis, the chassis height sensor swing arm is connected with the chassis Control arm through a connecting rod, and the chassis height sensor swing arm generates a corresponding corner when the chassis height changes, so that the change of the chassis height can be converted into the angle change of the chassis height sensor, and a corner signal is input into an ECU (Electronic Control Unit, also called as a traveling computer or a vehicle-mounted computer), and the ECU can obtain the change of the chassis height by calculating the angle change.

The chassis height sensor and the acceleration sensor are used as two independent assemblies, and the installation positions of the chassis height sensor and the acceleration sensor on a chassis suspension are different. Specifically, a chassis height sensor is mounted on the chassis, and an acceleration sensor is mounted on the vehicle body or on the wheel swing arm. In addition, the chassis height sensor and the acceleration sensor are respectively connected with the ECU through wiring harnesses.

Therefore, the chassis height sensor and the acceleration sensor need to be respectively arranged with a mounting position, a mounting bracket and a wire harness, and the problems of complex arrangement and large number of wire harnesses exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve current chassis height sensor and acceleration sensor and respective pencil and arrange complicacy, the problem of pencil a large amount.

In a first aspect, the utility model provides a chassis sensor assembly, this chassis sensor assembly have integrateed chassis height sensor and acceleration sensor, are guaranteeing both detectable chassis height signal, but also detectable acceleration signal's while, have simplified sensor, pencil arrangement mode, have reduced pencil quantity.

In order to solve the technical problem, an embodiment of the present invention discloses a chassis sensor assembly, including a connection unit, a swing arm unit, a chassis height sensor and an acceleration sensor, wherein the connection unit includes a body portion, a connector disposed at one end of the body portion, and a fixing portion disposed at the other end of the body portion, the fixing portion is bent and extended relative to the body portion, and the fixing portion is rotatably connected with one end of the swing arm unit; the chassis height sensor is arranged in the connecting unit and connected with the connector; the acceleration sensor is arranged on the connecting unit or the swing arm unit and is connected with the connector.

By adopting the technical scheme, the chassis height sensor and the acceleration sensor are integrated in the chassis sensor assembly, the chassis height sensor assembly can be connected with the ECU only by using one set of wiring harness instead of only needing to be suspended at the mounting position of the chassis sensor assembly on the chassis, the mounting positions of the chassis height sensor and the acceleration sensor are not required to be respectively arranged, the ECU and the chassis height sensor as well as the ECU and the acceleration sensor are not required to be respectively connected by using two sets of wiring harnesses, the arrangement mode of the sensors and the arrangement mode of the wiring harnesses are simplified, and the number of the wiring harnesses is reduced. Meanwhile, the chassis sensor assembly integrates a chassis height sensor and an acceleration sensor, so that the chassis sensor assembly can measure the height of a vehicle chassis and the acceleration of the vehicle in the vertical direction.

Furthermore, two groups of contact pins are arranged in the connector, one end of the first group of contact pins is electrically connected with external equipment, and the other end of the first group of contact pins is electrically connected with the chassis height sensor; one end of the second group of contact pins is electrically connected with external equipment, and the other end of the second group of contact pins is electrically connected with the acceleration sensor.

By adopting the technical scheme, the connector can send a height signal of a vehicle chassis measured by the chassis sensor assembly and an acceleration signal in the vertical direction of the vehicle to external equipment, such as an ECU (electronic control unit).

Furthermore, the acceleration sensor is arranged in the connecting unit, and a welding point reserved on a PCB assembly of the acceleration sensor is electrically connected with the other end of the second group of contact pins.

Further, the acceleration sensor is arranged on the swing arm unit and is electrically connected with the other end of the second group of contact pins through a wire harness.

Further, the two groups of pins are arranged side by side.

Furthermore, a groove portion is formed in one side, away from the body portion, of the swing arm unit, the acceleration sensor is located in the groove portion, a cover body is arranged on the swing arm unit, and the cover body is matched with the groove portion.

Further, the external device is an ECU, and the ECU is connected with the connector.

Furthermore, the two groups of contact pins and the connecting unit are integrally injection-molded.

In a second aspect, the present invention provides a chassis height detecting device, which includes the chassis sensor assembly as described above.

In a third aspect, the present invention provides a vehicle comprising a chassis height detection device as described above.

Drawings

Fig. 1 shows a first perspective view of a chassis sensor assembly in an embodiment of the invention;

fig. 2 shows a second perspective view of a chassis sensor assembly in an embodiment of the invention;

fig. 3 shows a third perspective view of a chassis sensor assembly in an embodiment of the invention;

fig. 4 shows a fourth perspective view of the chassis sensor assembly in an embodiment of the present invention.

In the drawings, the names of the parts corresponding to the reference numerals are as follows:

1-chassis sensor assembly, 11-connection unit, 110-body part, 111-connector, 112-fixing part, 12-swing arm unit, 121-one end of swing arm unit, 122-cover, 123-recess, 13-acceleration sensor, 14-wire harness, 15-first group of pins, 151-one end of first group of pins, 16-second group of pins, 161-one end of second group of pins, 17-swing arm ball head, X-first direction, Y-second direction and Q-third direction.

Detailed Description

The following description is provided for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to only those embodiments. On the contrary, the intention of implementing the novel features described in connection with the embodiments is to cover alternatives or modifications as may be included in the appended claims. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Furthermore, some of the specific details are omitted from the description so as not to obscure or obscure the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or the element to which the present invention is directed must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

The active suspension system, also called as an active guidance suspension system and a dynamic variable suspension system, can adjust the height of a chassis and the damping of a shock absorber according to different road conditions, control the height of a vehicle body and the vibration of the vehicle body, and reduce the change of the position of the vehicle body, thereby improving the operation stability and the riding comfort of the vehicle.

Air suspension is one type of active suspension system, which has the advantage that the spring constant of the spring can be automatically adjusted as required. For example, the suspension may stiffen during high speed travel to improve body stability; when the vehicle runs at a low speed for a long time, the control unit considers that the vehicle passes through a bumpy road surface, so that the suspension is softened to improve the damping comfort.

Referring to fig. 1 and 2, a chassis sensor assembly 1 includes a connection unit 11, a swing arm unit 12, a chassis height sensor (not shown in the drawings), and an acceleration sensor 13.

The connection unit 11 includes a main body 110, a connector 111 disposed at one end of the main body 110, and a fixing portion 112 disposed at the other end of the main body 110.

The connector 111 can be connected to an external device (not shown in the drawings) to transmit the floor height signal and the acceleration signal to the external device.

In the present embodiment, the external device is an ECU, the ECU is connected to the connector 111, and the connector 111 transmits the floor height signal and the acceleration signal to the ECU.

Referring to fig. 1 and 2, the fixing portion 112 is bent and extended with respect to the body portion 110. That is, the extending direction of the fixing portion 112 forms a certain angle with the extending direction of the body portion 110. Or, a part of the fixing portion 112 extends in the same direction as the main body 110, and another part of the fixing portion 112 extends at an angle to the main body 110.

The fixing portion 112 and the one end 121 of the swing arm unit 12 are disposed from bottom to top along the second direction (Y direction shown in fig. 2), and the fixing portion 112 and the one end 121 of the swing arm unit 12 are rotatably connected, that is, the one end 121 of the swing arm unit 12 can rotate along the third direction (Q direction shown in fig. 2) with the second direction Y as an axis.

Referring to fig. 1 and 2, the other end of the swing arm unit 12 is provided with a swing arm ball 17 integrally formed with the swing arm unit 12, the swing arm ball 17 can connect the swing arm unit 12 with a vehicle chassis control arm (the vehicle chassis control arm can control the change of the height of the vehicle chassis) through a connecting rod, and the swing arm unit 12 can rotate by a certain angle in a third direction Q along with the change of the height of the vehicle chassis. That is, the angle by which the swing arm unit 12 is rotated in the third direction Q can reflect the height of the vehicle chassis.

The chassis height sensor is used for measuring the chassis height, and is arranged in the connecting unit 11 and connected with the connector 111. Referring to fig. 1 and 2, an acceleration sensor 13 is used to measure vertical acceleration, the acceleration sensor 13 is provided at the connection unit 11 or the swing arm unit 12, and the acceleration sensor 13 is connected to the connector 111.

The chassis sensor assembly integrates a chassis height sensor and an acceleration sensor, so that the chassis sensor assembly can measure the height of a vehicle chassis and the acceleration of the vehicle in the vertical direction. Meanwhile, only the installation position of the chassis sensor assembly is required to be arranged on the chassis suspension, and the chassis sensor assembly can be connected with the ECU by using one set of wiring harness, so that the arrangement mode of the sensor and the wiring harness is optimized, and the number of the arranged wiring harnesses is reduced.

Referring to fig. 3, in some embodiments, two sets of pins are disposed in the connector 111, and one end 151 of the first set of pins 15 is electrically connected to an external device, and the other end (not shown) is electrically connected to a chassis height sensor for sending a chassis height signal to the external device. One end 161 of the second group of pins 16 is electrically connected to an external device, and the other end (not shown) is electrically connected to the acceleration sensor 13 for sending an acceleration signal to the external device. In the present embodiment, the external device is an ECU.

With continued reference to fig. 3, in some embodiments of the present application, there are 3 pins in the first set of pins 15 and 1 pin in the second set of pins 16, where both sets of pins share a ground line.

In some embodiments of the present application, an acceleration sensor 13 is provided in the connection unit 11, and the acceleration sensor 13 measures sprung acceleration (also referred to as vehicle body acceleration) and converts it into unsprung acceleration (also referred to as wheel acceleration) by the ECU. The solder joint reserved on the PCB assembly of the acceleration sensor 13 is electrically connected to the other end 161 of the second group of contact pins 16, so that the second group of contact pins 16 can be electrically connected to the acceleration sensor 13 and an external device, thereby realizing transmission of an acceleration signal.

Referring to fig. 1 to 3, preferably, an acceleration sensor 13 is provided to the swing arm unit 12, and unsprung acceleration (also referred to as wheel acceleration) is directly measured by the acceleration sensor 13. The acceleration sensor 13 is electrically connected with the other end 161 of the second group of pins 16 through the wire harness 14, so that the second group of pins 16 can electrically connect the acceleration sensor 13 with an external device, and the transmission of an acceleration signal is realized. In the present embodiment, referring to fig. 2, one end of the wire harness 14 is connected to the acceleration sensor 13, passes out from the lower side of the swing arm unit 12 in the second direction Y, and then penetrates into the body 110 of the connection unit 11 to be electrically connected to the second group of pins 16 in the connector 111 provided at one end of the body 110.

In some possible embodiments provided by the present invention, the first set of pins 15 and the second set of pins 16 are arranged side by side. Illustratively, referring to fig. 3, the first set of pins 15 and the second set of pins 16 are in a straight line. In the present embodiment, two sets of pins, i.e., the first set of pins 15 and the second set of pins 16, are integrally injection molded with the connecting unit 11.

Referring to fig. 1 and 2, in the present embodiment, a recessed portion 123 is opened on a side of the swing arm unit 12 facing away from the main body 110, and the acceleration sensor 13 is located in the recessed portion 123.

Referring to fig. 4, the swing arm unit 12 is provided with a cover 122, and the cover 122 is fitted to the recess 123 for protecting the acceleration sensor 13.

In the vehicle, the acceleration sensor 13 and the chassis height sensor are connected to the ECU, respectively, and the ECU is connected to the shock absorber and the air spring, respectively. Referring to fig. 1 to 4, for example, when the vehicle is driven on a flat road at a high speed, the ride height sensor sends a detected ride height signal to the ECU through the first group of pins 15 of the connector 111, the ECU compares the ride height signal with a preset ride height signal, which is higher than the preset ride height signal, and the ECU controls the air spring to be deflated to lower the ride height, lower the center of gravity of the vehicle, and improve driving safety. When the vehicle runs on a flat road surface at a high speed, the acceleration signal detected by the acceleration sensor 13 is high in vibration frequency and small in amplitude, the acceleration signal is sent to the ECU by the acceleration sensor 13 through the second group of contact pins 16 of the connector 111, the ECU controls the opening degree of the electromagnetic valve of the shock absorber to be increased according to the acceleration signal, so that the damping is increased, the shock absorber is hardened, and the controllability and the comfort of the vehicle are improved.

When the vehicle runs on a rugged road, the chassis height sensor sends a detected chassis height signal to the ECU through the connector 111, the ECU compares the chassis height signal with a preset chassis height signal, the chassis height signal is lower than the preset chassis height signal, and the ECU controls the air spring to inflate to improve the chassis height and improve the passing performance of the vehicle on a rugged road section. When the vehicle runs on a rough road, the acceleration signal detected by the acceleration sensor 13 is low in vibration frequency and large in amplitude, the acceleration sensor 13 sends the acceleration signal to the ECU through the connector 111, and the ECU controls the opening degree of the electromagnetic valve of the shock absorber to be reduced according to the acceleration signal, so that the damping is reduced, the shock absorber is softened, and the comfort of the vehicle is improved.

In some embodiments, the number of chassis sensor assemblies on a vehicle may be customized according to customer needs. For example, when a customer needs to install 3 acceleration sensors and 4 chassis height sensors on one vehicle, a chassis sensor assembly may be installed on each of the two front wheels and one rear wheel, and a single chassis height sensor may be installed on the other rear wheel.

In a second aspect, the present invention provides a chassis height detecting device, which includes a chassis sensor assembly as described in any of the above embodiments, for detecting the change and acceleration of the chassis height.

The third aspect, the utility model provides a vehicle, chassis height detection device in the second aspect can reduce the change of automobile body position through chassis height detection device control automobile body height and automobile body vibration to this promotes vehicle operating stability, riding comfort.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a further detailed description of the invention, and it is not intended to limit the invention to the specific embodiments described. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. A chassis sensor assembly comprising a connection unit, a swing arm unit, a chassis height sensor and an acceleration sensor, wherein,

the connecting unit comprises a body part, a connector arranged at one end of the body part and a fixing part arranged at the other end of the body part, the connector is used for being connected with external equipment, the fixing part bends and extends relative to the body part, and the fixing part is rotatably connected with one end of the swing arm unit;

the chassis height sensor is arranged in the connecting unit and connected with the connector;

the acceleration sensor is arranged on the connecting unit or the swing arm unit and is connected with the connector.

2. The chassis sensor assembly of claim 1, wherein two sets of pins are provided in the connector,

one end of the first group of contact pins is electrically connected with the external equipment, and the other end of the first group of contact pins is electrically connected with the chassis height sensor;

one end of the second group of contact pins is electrically connected with the external equipment, and the other end of the second group of contact pins is electrically connected with the acceleration sensor.

3. The chassis sensor assembly of claim 2, wherein the acceleration sensor is disposed in the connection unit, and a solder joint reserved on a PCB assembly of the acceleration sensor is electrically connected to the other end of the second set of contact pins.

4. The chassis sensor assembly of claim 2, wherein the acceleration sensor is provided to the swing arm unit, the acceleration sensor being electrically connected to the other end of the second set of contact pins by a wire harness.

5. The chassis sensor assembly of claim 4, wherein the two sets of pins are arranged side-by-side.

6. The chassis sensor assembly according to claim 4, wherein a recess is formed in a side of the swing arm unit facing away from the body portion, the acceleration sensor is located in the recess, and a cover is disposed on the swing arm unit and adapted to the recess.

7. The chassis sensor assembly of claim 1, wherein the external device is an ECU, the ECU being connected to the connector.

8. The chassis sensor assembly of claim 2, wherein the two sets of pins are integrally injection molded with the connection unit.

9. An undercarriage height sensing apparatus comprising an undercarriage sensor assembly according to any one of claims 1 to 8.

10. A vehicle characterized by comprising the chassis height detection apparatus according to claim 9.