Detection device

Abstract

The utility model provides a detection device which is suitable for steering wheel key detection and comprises a main body, a mounting rotating shaft, a horn contact, a horn switch, a horn output interface, at least two different types of CAN input interfaces and a CAN output interface. The mounting rotating shaft is arranged on the main body main panel; the horn contacts are positioned around the mounting rotating shaft; the loudspeaker output interface is suitable for being connected with loudspeaker prompting equipment; the anode of the horn output interface is connected in series with the horn contact and the horn switch; the cathode of the horn output interface is electrically connected with the mounting rotating shaft; the CAN output interface is suitable for being connected with CAN bus detection equipment; corresponding contacts of the at least two CAN input interfaces are connected in parallel and then are connected with corresponding contacts of the CAN output interface; during detection, the steering wheel is fixed by installing the rotating shaft, so that the slip ring at the bottom of the steering wheel is connected with the horn contact, the operation is convenient and rapid, the CAN bus interface of the steering wheel is directly connected with the CAN input interface of the corresponding type, a large number of patch cords are not needed, the operation is further simplified, and the detection efficiency is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of steering wheel detection, and more specifically, relates to a detection device. Background Art

[0002] Car steering wheels typically feature a variety of buttons, including those for the horn, multimedia, and other functions. To ensure proper function, each button must be inspected during production. However, due to the wide variety of steering wheel models, the button interfaces vary significantly.

[0003] Most steering wheel button interfaces fall into two main categories: one is the horn button interface, which, due to its simple function, is typically connected using a slip ring structure, and the slip ring structures of various steering wheels are not very different; the other is the interface for multimedia, function control, and other buttons. To achieve a wide range of functions, these buttons usually use the CAN bus and therefore typically use a multi-contact connector. However, to match different vehicle models, different steering wheels have different CAN bus interface types and different male and female connectors. Therefore, during the factory inspection process, the operator must first buckle the steering wheel to secure it, then operate the contact module to connect the slip ring structure, press the horn button to test whether it is functioning properly, and then select different adapter cables to connect the steering wheel's CAN bus interface to the CAN bus testing equipment for testing. This makes the entire process very complicated and the inspection efficiency is low. Utility Model Content

[0004] In view of this, an embodiment of the present application provides a detection device to solve the technical problems in the prior art of complex steering wheel button detection operation and low detection efficiency.

[0005] To achieve the above objectives, the technical solution adopted in this application is:

[0006] In one aspect, a detection device is provided, suitable for detecting steering wheel buttons, comprising:

[0007] a main body having a main panel;

[0008] A mounting shaft is provided on the main panel and is suitable for detachably mounting a steering wheel and enabling the steering wheel to rotate flexibly;

[0009] a speaker contact, provided on the main panel and located around the mounting shaft, adapted to abut against a bottom slip ring of the steering wheel mounted on the mounting shaft;

[0010] a horn switch, provided on the main body;

[0011] A speaker output interface, adapted to be connected to a speaker prompt device; the positive pole of the speaker output interface is connected in series with the speaker contact and the speaker switch, and the negative pole of the speaker output interface is electrically connected to the mounting shaft;

[0012] At least two different types of CAN input interfaces, each suitable for connecting to a CAN bus interface of a different steering wheel; and

[0013] The CAN output interface is suitable for connecting to a CAN bus detection device; corresponding contacts of at least two CAN input interfaces are connected in parallel and then connected to corresponding contacts of the CAN output interface.

[0014] In some embodiments, the horn switch and the CAN input interface are located on the main panel.

[0015] In some embodiments, the physical interface of at least one of the CAN input interfaces is a female connector, and the physical interface of at least one of the CAN input interfaces is a male connector.

[0016] In some embodiments, the number of the speaker contacts is three and they are evenly distributed around the mounting shaft.

[0017] In some embodiments, the horn switch is a knob switch.

[0018] The beneficial effect of the detection device provided by the embodiment of the present application is that, compared with the prior art, the detection device of the embodiment of the present application, before detection, first connects the horn prompt device to the horn output interface, and connects the CAN output interface to the CAN bus detection device; during detection, fixes the steering wheel on the mounting shaft so that the slip ring at the bottom is connected to the horn contact, then turns on the horn switch, rotates the steering wheel and presses the horn button, and uses the horn prompt device to detect whether the horn button of the steering wheel is functioning normally; then, connects the CAN bus interface of the steering wheel to the matching CAN input interface, presses each CAN bus button in turn, and thus can use the CAN bus detection device to detect whether each CAN bus button is functioning normally;

[0019] By installing a rotating shaft to fix the steering wheel, the steering wheel is prevented from moving and the slip ring at the bottom of the steering wheel can be connected to the horn contact, making operation more convenient and quicker. In addition, the CAN bus interface of the steering wheel is directly connected to the corresponding type of CAN input interface, without the need for a large number of adapter cables, further simplifying the operation and improving detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 A schematic diagram of the main panel of the detection device provided in an embodiment of the present application;

[0022] Figure 2 for Figure 1 A side view of the detection device;

[0023] Figure 3 for Figure 1 Circuit diagram of the detection device.

[0024] Among them, the reference numerals in the figures are:

[0025] 1-Main body; 11-Main panel; 2-Mounting shaft; 3-Speaker contact; 4-Speaker switch; 5-Speaker output interface; 6-CAN input interface; 7-CAN output interface. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0027] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0028] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0030] Please also refer to Figures 1 to 3 The detection device provided in the embodiment of the present application is now described. A detection device, suitable for detecting steering wheel buttons, comprises:

[0031] a main body having a main panel;

[0032] A mounting shaft is provided on the main panel and is suitable for detachably mounting a steering wheel and enabling the steering wheel to rotate flexibly;

[0033] a speaker contact, provided on the main panel and located around the mounting shaft, adapted to abut against a bottom slip ring of the steering wheel mounted on the mounting shaft;

[0034] a horn switch, provided on the main body;

[0035] A speaker output interface, adapted to be connected to a speaker prompt device; the positive pole of the speaker output interface is connected in series with the speaker contact and the speaker switch, and the negative pole of the speaker output interface is electrically connected to the mounting shaft;

[0036] At least two different types of CAN input interfaces, each suitable for connecting to a CAN bus interface of a different steering wheel; and

[0037] The CAN output interface is suitable for connecting to a CAN bus detection device; corresponding contacts of at least two CAN input interfaces are connected in parallel and then connected to corresponding contacts of the CAN output interface.

[0038] Compared with the prior art, the detection device of the embodiment of the present application, before testing, first connects the horn prompt device to the horn output interface, and connects the CAN output interface to the CAN bus detection device; during testing, fixes the steering wheel to the mounting shaft so that the slip ring at the bottom is connected to the horn contact, then turns on the horn switch, rotates the steering wheel and presses the horn button, and uses the horn prompt device to detect whether the horn button on the steering wheel is functioning properly; then, connects the CAN bus interface of the steering wheel to the matching CAN input interface, and presses each CAN bus button in turn, so that the CAN bus detection device can detect whether each CAN bus button is functioning properly;

[0039] By installing a rotating shaft to fix the steering wheel, the steering wheel is prevented from moving and the slip ring at the bottom of the steering wheel can be connected to the horn contact, making operation more convenient and quicker. In addition, the CAN bus interface of the steering wheel is directly connected to the corresponding type of CAN input interface, without the need for a large number of adapter cables, further simplifying the operation and improving detection efficiency.

[0040] In this embodiment, the main body may be an aluminum alloy box, with its top surface serving as a main panel. The mounting shaft and speaker contacts are mounted on the main panel, while the speaker switch, various CAN input interfaces, speaker output interfaces, and CAN output interfaces may be located on other sides of the main body for ease of use. The main body houses connecting wires or a PCB board that secures the various components. A power supply may also be installed inside the main body to power the speaker notification device.

[0041] The lower end of the mounting shaft is mounted to the main panel via a bearing, allowing for flexible rotation. The upper end of the mounting shaft is configured to correspond to the fixing hole in the center of the steering wheel to facilitate securing the steering wheel to the mounting shaft. Specifically, the fixing hole in the steering wheel is typically a splined hole. Therefore, the upper end of the mounting shaft can be configured as a square head. The four corners of the square head engage with the keyway in the splined hole, allowing for simple securing of the steering wheel without overtightening and facilitating disassembly.

[0042] The horn contact adopts elastic contact. When the steering wheel is installed on the mounting shaft, the horn contact contacts the bottom slip ring of the steering wheel and conducts with the horn button.

[0043] The horn switch controls the on / off state of the horn warning device. If the horn button on the steering wheel fails and remains in the normally closed state, the horn warning device can be disconnected through the horn switch to prevent the horn warning device from sounding for a long time.

[0044] The horn warning device is usually a buzzer or alarm light, which can be powered by its own power supply or a built-in power supply. The horn output interface usually includes two positive and negative contacts, which are connected to the positive and negative poles of the horn warning device respectively.

[0045] The CAN input interface typically includes at least three contacts, one for each of the CAN bus's CAN_L, CAN_SHLD, and CAN_H signals. In some extreme cases, it may only include two contacts, one for each of the CAN bus's CAN_L and CAN_H signals. In more flexible situations, it may include at least five contacts, one for each of the CAN_GND, CAN_L, CAN_SHLD, CAN_H, and CAN_V+ signals. Furthermore, the CAN input interface may also include additional contacts to enable more functionality. The physical interface type of each CAN input interface is determined based on the CAN bus interface of the various steering wheels to be tested, ensuring that each steering wheel's CAN bus interface can be connected to a corresponding CAN input interface.

[0046] The CAN output interface is determined by the interface of the selected CAN bus detection device and typically includes five contacts for transmitting the CAN_GND, CAN_L, CAN_SHLD, CAN_H, and CAN_V+ signals. A 9-pin D-Sub connector or OPEN_5 terminal block can be used. Each contact of the CAN output interface is connected to a corresponding contact of each CAN input interface. This allows the steering wheel's CAN bus interface to connect directly to the CAN bus detection device on the CAN output interface after being connected to any CAN input interface.

[0047] Figure 3 This is a circuit diagram of the specific implementation of this application. In the figure, T is the installation shaft, CN1, CN2, and CN3 are respectively speaker contacts, SW1 is the speaker switch, H2 is the speaker output interface, U1 and U2 are respectively CAN input interfaces, and H1 is the CAN output interface.

[0048] See also Figure 1 and Figure 2 As a specific implementation of the detection device provided in this application, the horn switch and the CAN input interface are arranged on the main panel.

[0049] In this embodiment, the horn switch and the CAN input interface are also provided on the main panel, and all parts that need to be connected are concentrated on the main panel, making it convenient for the operator in front to perform unified operations on various parts on the main panel.

[0050] See also Figure 1 and Figure 3 As a specific embodiment of the detection device provided in this application, the physical interface of at least one of the CAN input interfaces is a six-pin female socket, and the physical interface of at least one of the CAN input interfaces is a six-pin male socket.

[0051] In this embodiment, since the steering wheel has numerous buttons and transmits more than just CAN signals, the steering wheel's CAN bus interface also transmits other signals in addition to traditional CAN bus signals. Therefore, the steering wheel's CAN bus interface typically has more than five contacts. This embodiment utilizes a six-contact CAN input interface capable of connecting to a six-contact steering wheel CAN bus interface.

[0052] Of the six contacts of the CAN input interface, three or five contacts are used for CAN bus signals, and the other contacts can be left floating or connected to other detection equipment.

[0053] See also Figure 1 and Figure 3 As a specific embodiment of the detection device provided in this application, the number of the speaker contacts is three, and they are evenly distributed around the mounting shaft.

[0054] In this embodiment, three contacts are usually set on the car body to abut the slip ring at the bottom of the steering wheel. The three evenly distributed speaker contacts can truly simulate the state of the steering wheel after installation, so that the detection results can better reflect the state of the steering wheel after installation on the car body.

[0055] See also Figure 1 As a specific implementation of the detection device provided in this application, the horn switch is a knob switch.

[0056] In this embodiment, the horn switch adopts a knob switch to reduce accidental touches and can clearly identify the current state of the horn switch, thereby avoiding abnormal detection results due to accidental touches or forgetting to close the horn switch.

[0057] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. Detection device, suitable for steering wheel button detection, characterized in that: include: a main body having a main panel; A mounting shaft is provided on the main panel and is suitable for detachably mounting a steering wheel and enabling the steering wheel to rotate flexibly; a speaker contact, provided on the main panel and located around the mounting shaft, adapted to abut against a bottom slip ring of the steering wheel mounted on the mounting shaft; a horn switch, provided on the main body; A speaker output interface, adapted to be connected to a speaker prompt device; the positive pole of the speaker output interface is connected in series with the speaker contact and the speaker switch, and the negative pole of the speaker output interface is electrically connected to the mounting shaft; At least two different types of CAN input interfaces, each suitable for connecting to a CAN bus interface of a different steering wheel; and The CAN output interface is suitable for connecting to a CAN bus detection device; corresponding contacts of at least two CAN input interfaces are connected in parallel and then connected to corresponding contacts of the CAN output interface.

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