A wiring harness connection device for engine testing

Abstract

The utility model proposes a wiring harness connection device for engine testing, including: a first body, a second body, a conductive component and a conductive harness, the first body and the second body are made of insulating materials, the top surface of the first body is provided with a mounting cavity; the second body is fixedly arranged on the top surface of the first body, the bottom surface of the second body is provided with a mounting groove, the mounting groove is used for inserting the engine's circular ring terminal harness; the conductive component includes a conductive sheet and an elastic member, the conductive sheet is horizontally arranged in the mounting cavity, the top surface of the conductive sheet protrudes upward to form a connecting portion with an arc-shaped structure, the upper end of the elastic member is connected to the bottom surface of the conductive sheet, and the lower end of the elastic member is connected to the bottom surface of the mounting cavity; the conductive harness, one end of the conductive harness is electrically connected to the conductive component, and the other end of the conductive harness is used to electrically connect to the main control box. The connection device of the utility model can quickly achieve reliable and stable electrical connection with the circular ring terminal harness of the engine to be tested by plugging and unplugging.

Description

Technical Field

[0001] The utility model relates to the technical field of engine testing, in particular to a wiring harness connecting device for engine testing. Background Art

[0002] During normal operation of the engine, the wiring harness on the engine mainly transmits electrical signals and electricity, such as engine ignition signals, fuel injection signals, start signals, related sensor signals, and fault codes. Usually, the wiring harness of the engine is connected to the starter and other engine-related components (engine control unit ECU). However, before the engine leaves the factory, it is usually necessary to perform performance tests on a dynamometer. The engine is not connected to the starter, which requires the engine's wiring harness to be connected to the main control box of the dynamometer to obtain relevant feedback signals from the engine during the test.

[0003] The wiring harness on the engine is usually set as a ring terminal wiring harness. Due to the limited length of the wiring harness, when connecting the main control box to the wiring harness, it is usually necessary to lead the wiring harness out of the main control electrical box. The end of the wiring harness is connected to the ring piece on the ring terminal wiring harness through an alligator clip. After the wiring harness is connected to the alligator clip, it will adhere to the surface of the cylinder body. Since the temperature of the cylinder body is high during the engine test, this will cause the insulation on the alligator clip to melt, so that the metal clamp of the alligator clip will contact the cylinder body, which will cause multiple wiring harnesses to be broken through the cylinder body, making it impossible to transmit electricity or electrical signals. Utility Model Content

[0004] In view of this, the utility model proposes a wiring harness connection device for engine testing to solve the problem that the traditional alligator clip connection method has poor electrical connection reliability and is likely to affect the transmission of power and electrical signals.

[0005] The technical solution of the utility model is achieved in this way:

[0006] The utility model provides a wiring harness connection device for engine testing, comprising:

[0007] The first body is made of insulating material and has a mounting cavity on its top surface;

[0008] The second body is made of insulating material and is fixedly arranged on the top surface of the first body. The bottom surface of the second body is provided with a mounting groove penetrating the outer side wall of the second body, and the mounting groove is used for inserting the ring terminal harness of the engine;

[0009] A conductive component, comprising a conductive sheet and an elastic member, wherein the conductive sheet is horizontally arranged in the mounting cavity, the top surface of the conductive sheet protrudes upward to form a connecting portion with an arc-shaped structure, the outer diameter of the connecting portion is adapted to the inner diameter of the circular ring sheet on the circular ring terminal harness, the upper end of the elastic member is connected to the bottom surface of the conductive sheet, and the lower end of the elastic member is connected to the bottom surface of the mounting cavity, the conductive sheet has a first state and a second state, the first state is configured such that when the elastic member is not subjected to external pressure, the top surface of the connecting portion abuts against the inner top surface of the mounting groove, and the second state is configured such that when the conductive sheet is subjected to external pressure, the conductive sheet compresses the elastic member to move downward to separate the connecting portion from the inner top surface of the mounting groove;

[0010] A conductive wire harness, one end of which passes through the first body and is electrically connected to the conductive component, and the other end of which is used to be electrically connected to the main control box.

[0011] Based on the above technical solution, preferably, the conductive sheet is a circular structure, the connecting portion is located at the center of the conductive sheet, the outer diameter of the conductive sheet is larger than the outer diameter of the circular sheet on the circular terminal harness, and the width of the mounting groove is adapted to the outer diameter of the circular sheet on the circular terminal harness.

[0012] Further, preferably, the mounting groove includes a positioning groove and a guide groove, the positioning groove is an arc-shaped groove, and the positioning groove and the connecting part are coaxial, the depth of the positioning groove is adapted to the thickness of the circular ring sheet on the circular ring terminal harness, and the guide groove is a square groove, one end of the guide groove is connected to the positioning groove, and the other end extends horizontally out of the outside of the second body.

[0013] Furthermore, preferably, the depth of the guide groove is greater than the thickness of the circular ring piece on the circular ring terminal harness, and a guide slope is provided at the connection between the guide groove and the positioning groove, and the lower end of the guide slope is located above the connecting portion.

[0014] On the basis of the above technical solution, preferably, the conductive component also includes a connector, which is made of conductive material and is fixedly arranged on the bottom surface of the installation cavity. The lower end of the elastic member is connected to the connector, and the conductive wiring harness is located at one end of the installation cavity and is fixedly arranged on the connector.

[0015] Further, preferably, a first guide portion is provided at the center of the connecting member, a second guide portion coaxial with the first guide portion is provided at the center of the bottom surface of the connecting member, the upper end of the elastic member is sleeved on the second guide portion, and the lower end of the elastic member is sleeved on the first guide portion.

[0016] On the basis of the above technical solution, preferably, it also includes a pressing piece, which is made of insulating material, one end of the pressing piece is abutted against the top surface of the conductive sheet, and the other end of the pressing piece moves vertically upward through the outside of the second body, and the pressing piece can move downward relative to the second body to drive the conductive sheet to move downward in the installation cavity.

[0017] Further, preferably, the pressing piece has an arc-shaped plate body, and an arc-shaped channel for the arc-shaped plate body to move through is opened in the height direction of the second body, the arc-shaped channel is coaxial with the conductive sheet, the arc-shaped channel is located outside the mounting groove, and the radius of the arc-shaped channel is smaller than the radius of the conductive sheet, the bottom surface of the arc-shaped plate body extends horizontally outward to form a limiting portion, the limiting portion contacts the top surface of the conductive sheet, and an accommodating groove for accommodating the limiting portion is opened on the bottom surface of the second body.

[0018] Furthermore, preferably, a pressing cover is fixedly provided on one end of the pressing member extending out of the top surface of the second body.

[0019] Preferably, the conductive wire harness is located on any side of the first body away from the mounting groove.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] (1) The engine test harness connection device disclosed in the utility model is adapted to the circular ring piece of the circular ring terminal harness by the arc-shaped connecting portion of the conductive sheet, so that the circular ring piece can be stably sleeved on the connecting portion to ensure the reliability of the electrical connection. When there is no external pressure, the conductive sheet is kept in a locked position by the elastic force of the elastic member, and the circular ring piece cannot be easily removed, thereby achieving a reliable mechanical connection. By providing the mounting groove and the elastic connecting portion of the conductive sheet, the circular ring terminal harness can be easily inserted into and removed from the connection device, which simplifies the harness connection operation in the engine test and improves work efficiency. One end of the conductive wiring harness is electrically connected to the conductive component, and the other end is electrically connected to the main control box, ensuring the stable transmission of electrical signals and power during the engine test and avoiding signal transmission problems caused by poor connection. Compared with the crocodile clip connection method in the prior art, the connection device disclosed in the utility model can quickly establish an electrical connection with the ring terminal wiring harness of the engine to be tested by plugging and unplugging, thereby transmitting power and electrical signals between the main control box and the engine to be tested, without the risk of short circuit between the engine wiring harness and the engine cylinder block, and with higher safety and stability.

[0022] (2) A guiding slope is provided at the connection between the guiding groove and the positioning groove, and the lower end of the guiding slope is located above the connecting portion. Thus, when the circular ring piece passes through the guiding slope, its outer edge will naturally tilt downward and be located between the connecting portion and the guiding slope, so that the insertion process of the circular ring piece between the connecting portion and the guiding slope is more labor-saving and smooth, and resistance and friction are reduced.

[0023] (3) By setting a pressing piece, the user only needs to press the pressing piece to complete the insertion and removal operations, reducing the need for manual force and making the entire process easier and more convenient. The technical solution of using a pressing piece to drive the conductive sheet to move greatly simplifies the connection and removal operations of the ring terminal harness. This not only improves the user's operating experience and work efficiency, but also improves the safety and reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the wiring harness connection device for engine testing disclosed in the utility model;

[0026] Figure 2 This is a first-view exploded schematic diagram of the engine test harness connection device disclosed in the utility model;

[0027] Figure 3 It is a second perspective exploded schematic diagram of the engine test harness connection device disclosed in the utility model;

[0028] Figure 4 It is a top view of the wiring harness connection device for engine testing disclosed in the utility model;

[0029] Figure 5 for Figure 4 Plane section view at AA in the middle;

[0030] Reference numerals:

[0031] S, circular terminal harness; S1, circular ring piece; 1, first body; 11, mounting cavity; 2, second body; 21, mounting groove; 211, positioning groove; 212, guide groove; 213, guide slope; 22, accommodating groove; 23, arc-shaped channel; 3, conductive component; 31, conductive sheet; 32, elastic member; 310, connecting part; 33, connecting member; 331, first guide part; 311, second guide part; 4, conductive harness; 5, pressing member; 51, arc-shaped plate; 52, limiting part; 6, pressing cover. DETAILED DESCRIPTION

[0032] The following will be combined with the implementation of the utility model to clearly and completely describe the technical solutions in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] like Figure 1 As shown, combined Figure 2-5 The embodiment of the utility model discloses a wiring harness connection device for engine testing, including a first body 1, a second body 2, a conductive component 3 and a conductive harness 4.

[0034] The first body 1 and the second body 2 are the connecting bodies of the entire connecting device, and are both made of insulating materials. In the actual production process, a high-temperature resistant plastic material can be selected, such as polytetrafluoroethylene, nylon, etc. Therefore, during the use of the connecting device, the connecting device can withstand the high temperature around the engine without deformation or melting.

[0035] A mounting cavity 11 is defined on the top surface of the first body 1 for mounting the conductive component 3 .

[0036] The second body 2 is fixedly arranged on the top surface of the first body 1. Preferably, the second body 2 and the first body 1 are connected by bolts. The bottom surface of the second body 2 is provided with a mounting groove 21 that passes through the outer wall of the second body 2. The mounting groove 21 is used for inserting the ring terminal harness S of the engine.

[0037] The conductive component 3 is arranged in the mounting cavity 11, and since the second body 2 is fixed to the top surface of the first body 1, the conductive component 3 is confined in the mounting cavity 11. The conductive component 3 includes a conductive sheet 31 and an elastic member 32. The conductive sheet 31 is horizontally arranged in the mounting cavity 11. In the present embodiment, the conductive sheet 31 is a metal sheet, such as a copper sheet or an iron sheet, preferably a copper sheet, which has better conductivity. The outer contour of the conductive sheet 31 is adapted to the inner contour of the mounting cavity 11, so that it is convenient for the conductive sheet 31 to translate along the axial direction of the mounting cavity 11. The top surface of the conductive sheet 31 is upwardly protruded to form a connecting portion 310 with an arc-shaped structure. The outer diameter of the connecting portion 310 is adapted to the inner diameter of the circular sheet S1 on the circular terminal harness S. As a result, the circular sheet S1 can be sleeved on the periphery of the connecting portion 310 to realize the electrical connection between the circular sheet S1 and the connecting portion 310.

[0038] The elastic member 32 is vertically arranged in the installation cavity 11. Preferably, the elastic member 32 is located at the center of the installation cavity 11. The upper end of the elastic member 32 is connected to the bottom surface of the conductive sheet 31, and the lower end of the elastic member 32 is connected to the bottom surface of the installation cavity 11. In this embodiment, the elastic member 32 is preferably a compression spring.

[0039] The conductive sheet 31 has a first state and a second state. In the first state, when there is no external pressure on the elastic member 32, the top surface of the connecting portion 310 is abutted against the inner top surface of the mounting groove 21. It can be understood that when the entire connecting device is not connected to the ring terminal harness S of the engine, the upward elastic force of the elastic member 32 drives the top surface of the connecting portion 310 to abut against the inner top surface of the mounting groove 21.

[0040] The second state is configured that when the conductive sheet 31 is pressed by an external force, the conductive sheet 31 compresses the elastic member 32 to move downward so that the connecting portion 310 is separated from the inner top surface of the installation groove 21 .

[0041] Specifically, when the annular terminal harness S of the engine needs to be connected to the connection device of this embodiment, the annular piece S1 of the annular terminal harness S is horizontally inserted into the mounting groove 21. During the insertion of the annular piece S1, the annular piece S1 squeezes the connecting portion 310 and applies downward pressure to the connecting portion 310, causing the entire conductive sheet 31 to compress the elastic member 32 under the action of the downward pressure and move downward along the mounting cavity 11, so that a certain gap is generated between the top surface of the connecting portion 310 and the inner top surface of the mounting groove 21, thereby facilitating the annular piece After S1 passes through the above-mentioned gap and passes over the connecting part 310 and is sleeved on the outer periphery of the annular piece S1, the annular piece S1 does not apply pressure to the connecting part 310 at this time. Under the elastic force of the elastic member 32 itself, the connecting part 310 abuts against the inner top surface of the mounting groove 21, thereby locking the annular piece S1 and the connecting part 310. At this time, without external force, the annular piece S1 will not be able to be separated from the connecting part 310, thereby achieving electrical connection between the engine's annular terminal harness S and the conductive sheet 31 while maintaining an effective mechanical connection between the two.

[0042] When the circular terminal harness S needs to be removed from the connecting device, it is only necessary to pull the circular terminal harness S horizontally. Since the connecting portion 310 is a circular arc convex structure, the circular ring piece S1 will squeeze the connecting portion 310 under the action of horizontal pulling force, thereby achieving detachment from the installation groove 21.

[0043] Conductive harness 4, one end of the conductive harness 4 passes through the first body 1 and is electrically connected to the conductive component 3, and the other end of the conductive harness 4 is used to be electrically connected to the main control box. In actual use, the end of the conductive harness 4 away from the first body 1 is electrically connected to the main control box, and when the circular ring piece S1 on the circular ring terminal harness S of the engine to be tested is connected to the entire connection device, the electrical connection can be achieved.

[0044] The wiring harness connection device for engine testing disclosed in this embodiment is adapted to the circular ring piece S1 of the circular ring terminal wiring harness S through the arc-shaped connecting portion 310 of the conductive sheet 31, so that the circular ring piece S1 can be stably sleeved on the connecting portion 310 to ensure the reliability of the electrical connection. When there is no external pressure, the conductive sheet 31 is kept in the locked position by the elastic force of the elastic member 32, and the circular ring piece S1 cannot be arbitrarily dislodged, thereby achieving a reliable mechanical connection. By providing the mounting groove 21 and the elastic connecting portion 310 of the conductive sheet 31, the circular ring terminal wiring harness S can be easily inserted and unplugged from the connecting device, which simplifies the wiring harness connection operation in the engine test and improves the work efficiency. One end of the conductive harness 4 is electrically connected to the conductive component 3, and the other end is electrically connected to the main control box, which ensures the stable transmission of electrical signals and electricity during the engine test and avoids signal transmission problems caused by poor connection.

[0045] Compared with the alligator clip connection method in the prior art, the connection device disclosed in this embodiment can quickly establish an electrical connection with the ring terminal wiring harness S of the engine to be tested by plugging and unplugging, thereby transmitting electricity and electrical signals between the main control box and the engine to be tested. There is no risk of short circuit between the engine wiring harness and the engine cylinder body, and the safety and stability are relatively high.

[0046] As some preferred embodiments, the conductive sheet 31 is a circular structure, so that it can move up and down smoothly in the mounting groove 21. The circular conductive sheet 31 can provide a larger contact area in a limited space, optimize space utilization, and ensure stable transmission of electrical signals and power.

[0047] The connection portion 310 is located at the center of the conductive sheet 31. This arrangement can ensure that the circular ring terminal harness S forms good contact with the conductive sheet 31 when inserted, thereby improving the reliability and stability of the electrical connection. The outer diameter of the conductive sheet 31 is larger than the outer diameter of the circular ring sheet S1 on the circular ring terminal harness S. The larger outer diameter of the conductive sheet 31 provides a larger contact area, which enhances the stability of electrical signal and power transmission. The width of the mounting groove 21 is matched with the outer diameter of the circular ring sheet S1 on the circular ring terminal harness S, ensuring that the circular ring sheet S1 can be accurately inserted into the mounting groove 21 without loosening or offset, ensuring the stability of the mechanical connection. At the same time, it is convenient for operators to easily insert and remove the circular ring sheet S1 from the mounting groove 21, improving the convenience of operation and work efficiency.

[0048] As some preferred embodiments, the installation groove 21 includes a positioning groove 211 and a guide groove 212. The positioning groove 211 is an arc-shaped groove, and the positioning groove 211 and the connecting part 310 are coaxial. This arrangement can ensure that the circular ring terminal harness S can achieve accurate positioning of the circular ring piece S1 when inserted, and no deviation will occur, thereby ensuring the accuracy and stability of the connection.

[0049] The depth of the positioning groove 211 is matched with the thickness of the circular ring piece S1 on the circular ring terminal harness S, ensuring that the circular ring piece S1 can be fully embedded in the positioning groove 211 without vertical looseness, thereby improving the mechanical stability of the connection and the reliability of the electrical connection. The guide groove 212 is a square groove, one end of which is connected to the positioning groove 211, and the other end extends horizontally out of the second body 2. The square guide groove 212 can provide a clear guide path for the circular ring terminal harness S, ensuring that no deviation or jamming occurs during the insertion process, and improving the smoothness and accuracy of the connection operation.

[0050] In some embodiments, the depth of the guide groove 212 is consistent with the depth of the positioning groove 211. In this way, when the annular piece S1 is inserted into the guide groove 212, the residual gap of the entire annular piece S1 in the guide groove 212 is very small, which requires a large thrust to move the annular piece S1 over the connecting portion 310 and sleeve it on the connecting portion 310.

[0051] In order to save effort during the insertion process, the solution adopted in this embodiment is that the depth of the guide groove 212 is greater than the thickness of the circular ring piece S1 on the circular ring terminal harness S, ensuring that the circular ring piece S1 will not be stuck due to insufficient space during the insertion process. This allows the circular ring piece S1 to slide smoothly and eventually enter the positioning groove 211. The deeper guide groove 212 can reduce the friction between the circular ring piece S1 and the bottom of the groove, reducing the resistance during the insertion process, thereby making the operation easier.

[0052] A guide slope 213 is provided at the connection between the guide groove 212 and the positioning groove 211, and the lower end of the guide slope 213 is located above the connecting portion 310. The guide slope 213 plays a role in guiding the annular piece S1 to enter the positioning groove 211. Through the inclined surface design, the annular piece S1 can naturally slide along the inclined surface into the positioning groove 211. Specifically, when the annular piece S1 passes through the guide slope 213, its outer edge will naturally tilt downward and be located between the connecting portion 310 and the guide slope 213, so that the insertion process of the annular piece S1 between the connecting portion 310 and the guide slope 213 is more labor-saving and smooth, reducing resistance and friction.

[0053] In order to facilitate the connection between the conductive wire bundle 4 and the conductive component 3, the present embodiment further optimizes the conductive component 3. Specifically, the conductive component 3 also includes a connector 33, which is made of conductive material. The connector 33 is fixedly arranged on the bottom surface of the installation cavity 11. The lower end of the elastic member 32 is connected to the connector 33. One end of the conductive wire bundle 4 located in the installation cavity 11 is fixedly arranged on the connector 33. In some preferred embodiments, the lower end of the elastic member 32 can be welded to the connector 33, or can be directly abutted against the connector 33. The conductive wire bundle 4 passes through the first body 1 horizontally and is electrically connected to the connector 33 by bolts.

[0054] In this embodiment, the elastic member 32 is located at the axis center line of the installation cavity 11. In order to ensure that the elastic member 32 can be extended and retracted in the axial direction when the conductive sheet 31 compresses the elastic member 32, the embodiment further provides the following scheme. Specifically, a first guide portion 331 is provided at the center of the connecting member 33, and a second guide portion 311 coaxial with the first guide portion 331 is provided at the center of the bottom surface of the connecting portion 310. The upper end of the elastic member 32 is sleeved on the second guide portion 311, and the lower end of the elastic member 32 is sleeved on the first guide portion 331. Thus, by providing the first guide portion 331 and the second guide portion 311, it is possible to ensure that both ends of the elastic member 32 are axially constrained, thereby preventing the elastic member 32 from bending and deforming during the compression process.

[0055] In the above embodiment, the engine's ring terminal harness S is inserted into the mounting groove 21 by manually applying a pushing force to achieve connection with the connecting portion 310, and the engine's ring terminal harness S is disconnected from the connecting portion 310 by manually applying a pulling force. This method requires manual application of a large amount of force, and when repeated plugging and unplugging is required, it is laborious and the user experience is not good.

[0056] To this end, this embodiment proposes a new implementation method based on the above embodiments to solve the problem of laborious plugging and unplugging.

[0057] Specifically, the connection device of this embodiment further includes a pressing member 5 made of insulating material to ensure that the pressing member 5 will not be electrically connected to the conductive sheet 31, thereby preventing the entire connection device from being charged when in contact with the engine cylinder block.

[0058] One end of the pressing member 5 is pressed against the top surface of the conductive sheet 31, and the other end of the pressing member 5 moves vertically upward through the outside of the second body 2. The pressing member 5 can move downward relative to the second body 2 to drive the conductive sheet 31 to move downward in the installation cavity 11. With such a technical solution, when connection is required, the user only needs to press the pressing member 5, and the pressing member 5 drives the conductive sheet 31 to move downward along the installation cavity 11, so that the connecting portion 310 and the inner top surface of the installation groove 21 are separated, and the annular terminal harness S can be easily inserted without applying a large manual thrust. When the annular sheet S1 completely enters the installation groove 21, the user only needs to release the pressing member 5, and the conductive sheet 31 will return to its initial position, so that the connecting portion 310 passes through the annular sheet S1 and presses against the inner top surface of the installation groove 21, so as to realize the electrical connection between the annular sheet S1 and the connecting portion 310.

[0059] When the circular ring terminal harness S needs to be unplugged from the connecting device, the user only needs to press the pressing piece 5 again. The pressing piece 5 drives the conductive sheet 31 to move downward along the mounting cavity 11, so that the connecting part 310 and the circular ring sheet S1 are disengaged, and the circular ring terminal harness S can be easily unplugged without applying a large manual pulling force.

[0060] With the above arrangement, the user only needs to press the pressing member 5 to complete the insertion and removal operations, reducing the need for manual force application, making the entire process easier and more convenient. By adopting the technical solution of using the pressing member 5 to drive the conductive sheet 31 to move, the connection and removal operations of the ring terminal harness S are greatly simplified. This not only improves the user's operating experience and work efficiency, but also improves the safety and reliability of the device.

[0061] This embodiment shows a preferred structural mode of the pressing member 5. Specifically, the pressing member 5 has an arc-shaped plate body 51. The second main body 2 has an arc-shaped channel 23 in the height direction for the arc-shaped plate body 51 to move through. The arc-shaped channel 23 is coaxial with the conductive sheet 31. In this way, it is ensured that the pressing force tends to the center of the conductive sheet 31, thereby achieving smooth pressing operation.

[0062] The arc channel 23 is located outside the installation groove 21 , and the radius of the arc channel 23 is smaller than the radius of the conductive sheet 31 . This arrangement avoids interference with the plugging and unplugging operation of the annular terminal harness S in the installation groove 21 .

[0063] The bottom surface of the arc-shaped plate 51 extends outward horizontally to form a limiting portion 52, and the limiting portion 52 contacts the top surface of the conductive sheet 31. The bottom surface of the second body 2 is provided with a receiving groove 22 for receiving the limiting portion 52. The arrangement of the receiving groove 22 and the limiting portion 52 can prevent the arc-shaped plate 51 from escaping from the arc-shaped channel 23 of the second body 2, thereby playing a limiting role. Specifically, when the limiting portion 52 is received in the receiving groove 22, the top surface of the conductive sheet 31 and the bottom surface of the second body 2 are in contact. At this time, the entire arc-shaped plate 51 cannot escape from the second body 2 upwards because the limiting portion 52 is located between the receiving groove 22 and the conductive sheet 31.

[0064] Preferably, a pressing cover 6 is fixedly provided at one end of the pressing member 5 extending out of the top surface of the second body 2. The setting of the pressing cover 6 facilitates the user to apply pressure to the pressing member 5 through the pressing cover 6. In this embodiment, the pressing cover 6 and the pressing member 5 can be connected by a clamping or bolting method, and accordingly, the pressing cover 6 is also made of plastic.

[0065] Preferably, the conductive harness 4 is located on any side of the first body 1 away from the mounting groove 21. In this way, the engine's annular terminal harness S can be reduced from being entangled or interfering with the conductive harness 4 when inserted into the mounting groove 21, ensuring that the harness is arranged in an orderly manner.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wiring harness connection device for engine testing, characterized in that: include: The first body (1) is made of insulating material and has a mounting cavity (11) on its top surface; The second body (2) is made of insulating material and is fixedly arranged on the top surface of the first body (1). The bottom surface of the second body (2) is provided with a mounting groove (21) penetrating the outer wall of the second body (2). The mounting groove (21) is used for inserting the ring terminal harness (S) of the engine; The conductive component (3) comprises a conductive sheet (31) and an elastic member (32), wherein the conductive sheet (31) is horizontally arranged in the mounting cavity (11), the top surface of the conductive sheet (31) protrudes upward to form a connecting portion (310) with an arc structure, the outer diameter of the connecting portion (310) is adapted to the inner diameter of the circular ring sheet (S1) on the circular ring terminal harness (S), the upper end of the elastic member (32) is connected to the bottom surface of the conductive sheet (31), and the lower end of the elastic member (32) is connected to the bottom surface of the conductive sheet (31). The conductive sheet (31) is connected to the inner bottom surface of the installation cavity (11), and the conductive sheet (31) has a first state and a second state. The first state is configured such that when the elastic member (32) is not subjected to external pressure, the top surface of the connecting portion (310) abuts against the inner top surface of the installation groove (21); the second state is configured such that when the conductive sheet (31) is subjected to external pressure, the conductive sheet (31) compresses the elastic member (32) to move downward so that the connecting portion (310) is separated from the inner top surface of the installation groove (21); A conductive wire harness (4), one end of which passes through the first body (1) and is electrically connected to the conductive component (3), and the other end of which is used to be electrically connected to the main control box.

2. The engine test harness connection device according to claim 1, characterized in that: The conductive sheet (31) is a circular structure, the connecting portion (310) is located at the center of the conductive sheet (31), the outer diameter of the conductive sheet (31) is greater than the outer diameter of the circular sheet (S1) on the circular terminal harness (S), and the width of the mounting groove (21) is adapted to the outer diameter of the circular sheet (S1) on the circular terminal harness (S).

3. The engine test harness connection device according to claim 2, characterized in that: The mounting groove (21) comprises a positioning groove (211) and a guide groove (212); the positioning groove (211) is an arc-shaped groove, and the positioning groove (211) and the connecting portion (310) are coaxial; the depth of the positioning groove (211) is adapted to the thickness of the circular ring sheet (S1) on the circular ring terminal harness (S); the guide groove (212) is a square groove; one end of the guide groove (212) is connected to the positioning groove (211), and the other end horizontally extends out of the outside of the second body (2).

4. The engine test harness connection device according to claim 3, characterized in that: The depth of the guide groove (212) is greater than the thickness of the circular ring piece (S1) on the circular ring terminal harness (S), and a guide slope (213) is provided at the connection between the guide groove (212) and the positioning groove (211), and the lower end of the guide slope (213) is located above the connecting portion (310).

5. The engine test harness connection device according to claim 1, characterized in that: The conductive component (3) further comprises a connecting piece (33), the connecting piece (33) being made of a conductive material, the connecting piece (33) being fixedly arranged on the inner bottom surface of the installation cavity (11), the lower end of the elastic piece (32) being connected to the connecting piece (33), and one end of the conductive wire bundle (4) located in the installation cavity (11) being fixedly arranged on the connecting piece (33).

6. The engine test harness connection device according to claim 5, characterized in that: A first guide portion (331) is provided at the center of the connecting member (33), a second guide portion (311) coaxial with the first guide portion (331) is provided at the center of the bottom surface of the connecting member (310), the upper end of the elastic member (32) is sleeved on the second guide portion (311), and the lower end of the elastic member (32) is sleeved on the first guide portion (331).

7. The engine test harness connection device according to any one of claims 2 to 6, characterized in that: The device further comprises a pressing member (5), the pressing member (5) being made of an insulating material, one end of the pressing member (5) being in contact with the top surface of the conductive sheet (31), and the other end of the pressing member (5) being movable vertically upward through the outside of the second body (2), and the pressing member (5) being movable downward relative to the second body (2) to drive the conductive sheet (31) to move downward in the mounting cavity (11).

8. The engine test harness connection device according to claim 7, characterized in that: The pressing member (5) comprises an arc-shaped plate body (51); an arc-shaped channel (23) is provided in the height direction of the second body (2) for the arc-shaped plate body (51) to move through; the arc-shaped channel (23) is coaxial with the conductive sheet (31); the arc-shaped channel (23) is located outside the mounting groove (21); and the radius of the arc-shaped channel (23) is smaller than the radius of the conductive sheet (31); the bottom surface of the arc-shaped plate body (51) extends outward horizontally to form a limiting portion (52); the limiting portion (52) contacts the top surface of the conductive sheet (31); and the bottom surface of the second body (2) comprises an accommodating groove (22) for accommodating the limiting portion (52).

9. The engine test harness connection device according to claim 7, characterized in that: A pressing cover (6) is fixedly provided on one end of the pressing member (5) extending out of the top surface of the second body (2).

10. The engine test harness connection device according to claim 1, characterized in that: The conductive wire bundle (4) is located on any side of the first body (1) away from the mounting groove (21).

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