Fixing device for preventing HIL test wire harness terminal from being short-circuited

Abstract

The utility model relates to the technical field of automobile software testing, in particular to a fixing device for preventing HIL test wire harness terminals from being short-circuited. The fixing device comprises a fixing unit; the fixing unit comprises a fixing part, a retreating structure and a base; one end of the fixing part and the withdrawing structure are arranged in the base; a through hole is formed in the fixing part, and a first retaining structure matched with the wire harness terminal is arranged on the inner wall of the through hole, so that the wire harness terminal can be prevented from being separated from the fixing part; and one end of the withdrawing structure is arranged in the through hole, so that the wire harness terminal inserted into the withdrawing structure can be separated from the fixed part. According to the utility model, the unused wire harness terminals are inserted into the fixing part, so that different wire harness terminals are isolated, and the wire harness terminals are prevented from being mutually connected to form a short circuit; when the wire harness terminal needs to be used, the wire harness terminal is separated from the fixed part through the press-in and exit structure and can exit from the fixed part, so that the wire harness terminal can be normally used.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile software testing, in particular to a fixing device for preventing HIL test harness terminals from being short-circuited. Background Art

[0002] During automotive development, system software and mechanical hardware structures are typically designed in parallel, with testing only possible after integration. Discovering serious safety failures after integration could potentially result in personal injury, equipment damage, and project delays. To mitigate these failures, HIL testing is widely used.

[0003] HIL testing, or Hardware-in-the-Loop Testing, is a testing method widely used in the field of automotive electronic control systems.

[0004] With the rapid development of the automotive industry, more and more projects are being run in parallel. When switching between projects, there is an increasing number of cases where different projects share wiring harnesses. The sharing of wiring harnesses results in some terminals not needing to be connected to the HIL in a certain project, but being directly exposed, which poses a risk of short circuits. Utility Model Content

[0005] The utility model aims to provide a fixing device for preventing HIL test harness terminals from being short-circuited, which enables the HIL test platform to have the ability to prevent harness terminals from being short-circuited.

[0006] The embodiment of the present utility model is achieved as follows:

[0007] The utility model provides a fixing device for preventing a HIL test harness terminal from being short-circuited, comprising a fixing unit;

[0008] The fixing unit includes a fixing portion, an exit structure and a base;

[0009] One end of the fixing portion and the exit structure are both arranged inside the base;

[0010] The fixing portion is provided with a through hole, and the inner wall of the through hole is provided with a first retaining structure that cooperates with the wiring harness and can prevent the wiring harness terminal from being separated from the fixing portion;

[0011] One end of the exit structure is disposed in the through hole, and the wiring harness inserted into the exit structure can be separated from the fixing portion.

[0012] In an optional embodiment, the second retaining structure is an elastic barb.

[0013] In an optional embodiment, the first retaining structure is an annular retaining bar circumferentially arranged on the inner wall of the through hole.

[0014] In an optional embodiment, the exit structure includes a cylinder, and the second stop structure can enter the cylinder to achieve a contraction function.

[0015] In an optional embodiment, an elastic member is provided in the base, and the elastic member is used to apply a force to the fixing portion in a direction away from the base.

[0016] In an optional embodiment, the elastic member is arranged inside the exit structure;

[0017] A sliding connection groove is provided on the side wall of the exit structure.

[0018] In an optional embodiment, there are multiple elastic members, and the multiple elastic members are evenly arranged in a circular array around the exit structure.

[0019] In an optional embodiment, the fixing portion includes a main body and a bottom plate;

[0020] The main body is arranged on one side of the bottom plate;

[0021] The through hole is provided on the main body;

[0022] The bottom plate includes an outer ring plate and an inner core plate;

[0023] The inner core plate is slidably disposed within the exit structure.

[0024] In an optional embodiment, a chassis is further included, and a plurality of fixing units are provided on the chassis.

[0025] In an optional embodiment, the fixing unit and the chassis are detachably connected.

[0026] The beneficial effects of the embodiments of the present utility model are:

[0027] Insert the unused wiring harness terminals into the fixed part to isolate different wiring harness terminals and avoid short circuit caused by mutual connection of the wiring harness terminals; when the wiring harness terminals need to be used, the wiring harness terminals are separated from the fixed part by pressing the exit structure and can be exited from the fixed part, so that the wiring harness terminals can be used normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 A front view of a fixing device provided in an embodiment of the present utility model;

[0030] Figure 2 for Figure 1 AA section view;

[0031] Figure 3 for Figure 1 AA cross-sectional view of another embodiment

[0032] Figure 4 A schematic structural diagram of a wiring harness terminal of a fixing device provided by an embodiment of the present utility model;

[0033] Figure 5 A top view of the fixing portion of the fixing device provided by an embodiment of the present utility model;

[0034] Figure 6 for Figure 5 BB cross-sectional view;

[0035] Figure 7 A top view of the bottom plate of the fixing device provided in an embodiment of the present utility model;

[0036] Figure 8 A top view of the exit structure of the fixing device provided in an embodiment of the present utility model;

[0037] Figure 9 for Figure 8 CC cross-sectional view;

[0038] Figure 10 for Figure 8 DD cross-sectional view;

[0039] Figure 11 A schematic structural diagram of a base of a fixing device provided in an embodiment of the present utility model;

[0040] Figure 12 A schematic structural diagram of a fixing device provided in an embodiment of the present invention having multiple fixing units.

[0041] icon:

[0042] 1-base; 2-fixing part; 3-wiring terminal; 4-cylinder; 5-annular baffle; 6-barb; 7-elastic member; 8-sliding connection groove; 9-main body; 10-bottom plate; 11-inner core plate; 12-outer ring plate; 13-fixed connection part; 14-cylinder; 15-elastic member; 16-sliding connection groove; 17-fixing unit; 18-chassis. DETAILED DESCRIPTION

[0043] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0046] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0047] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0048] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0049] The following is combined with Figure 1 To the attached Figure 12 , some embodiments of the present invention are described in detail. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0050] The utility model provides a fixing device for preventing HIL test harness terminals from short-circuiting, comprising a fixing unit 17; the fixing unit 17 comprises a fixing portion 2, an exit structure, a harness terminal 3 and a base 1; one end of the fixing portion 2 and the exit structure are both arranged inside the base 1; a through hole is provided on the fixing portion 2, a first retaining structure is provided on the inner wall of the through hole, and a second retaining structure is provided on the outer wall of the harness terminal 3, the second retaining structure is arranged in conjunction with the first retaining structure to prevent the harness terminal 3 from detaching from the fixing portion 2; one end of the exit structure is provided in the through hole, and the harness terminal 3 can be inserted into the exit structure.

[0051] In this embodiment, the fixing device for preventing the HIL test harness terminal from shorting is as follows: Figure 1 is the front view, Figure 2 for Figure 1 AA cross-sectional view.

[0052] In this embodiment, the shape of the fixing device can be as follows: Figure 1 and Figure 2 The cylindrical shape can also be any shape, and its internal space is determined according to the shape of the wiring harness terminal 3.

[0053] In the present invention, the wiring harness terminal 3 is cylindrical and the entire device is also cylindrical for illustration.

[0054] Specifically, in this embodiment, the fixing device is composed of three parts, including a bottom, a fixing portion 2 and an exit structure.

[0055] In this embodiment, the entire device is made of insulating material.

[0056] Figure 3 Schematic diagram of the structure of the wiring harness terminal 3, which is cylindrical or in other shapes.

[0057] Figure 10 The base 1 is connected to the exit structure and mainly plays the role of fixing the exit structure and regulating the running trajectory of the fixing part 2.

[0058] The base 1 can be in any shape such as a cylinder or a square, and the shape of the internal space is consistent with that of the fixing part 2 , so long as the moving track of the fixing part 2 can be limited.

[0059] In an optional embodiment, the second retaining structure is an elastic barb 6 .

[0060] Specifically, in this embodiment, the second retaining structure is an elastic barb 6 provided on the outer wall of the wiring harness terminal 3, which can cooperate with the first retaining structure after being inserted into the through hole to prevent the wiring harness terminal 3 from detaching from the through hole.

[0061] In this embodiment, the barbs 6 are provided in pairs, with one barb 6 provided at each end of the diameter of the wiring harness terminal 3 , forming a pair of barbs 6 .

[0062] They can also be arranged around the periphery of the wiring harness terminal 3, and the specific number is set according to actual needs.

[0063] In an optional embodiment, the first retaining structure is an annular retaining bar 5 circumferentially arranged on the inner wall of the through hole.

[0064] In this embodiment, the first retaining structure is an annular baffle 5, which is arranged around the center line of the through hole on the inner wall of the through hole, and can block all the barbs 6 entering the through hole, thereby better preventing the barbs 6 from detaching from the through hole, ensuring the stability of the positioning of the wiring harness terminal 3, further ensuring the positioning stability of the wiring harness terminal 3, and reducing the risk of short circuit.

[0065] In an optional embodiment, the exit structure includes a cylinder 14, and the second retreat-stopping structure can enter the cylinder 14 to achieve a contraction function.

[0066] like Figure 7 This is a top view of the exit structure. Figure 8 for Figure 7 CC cross-sectional view, Figure 9 for Figure 7 DD cross-sectional view.

[0067] In this embodiment, the exit structure is mainly to receive the barb 6 into the exit structure when the wiring harness terminal 3 and the fixing portion 2 are pressed down at the same time. At this time, while ensuring that the fixing portion 2 is still in the pressed position, the terminal can be manually removed smoothly; Figure 2As shown, when the upper end of the first retaining structure on the fixing part 2 coincides with the upper end of the exit structure, the barb 6 of the second retaining structure will inevitably enter the exit structure, and the wiring harness terminal 3 can be taken out from the exit structure at this time; after the wiring harness terminal 3 is taken out, the downward pressure of the fixing part 2 can be cancelled, and the fixing part 2 can be reset.

[0068] Similarly, when placing the wiring harness terminal 3, manually hold the fixing part 2 and insert the wiring harness terminal 3 into the through hole of the fixing part 2. When the top of the barb 6 of the wiring harness terminal 3 moves to the bottom of the first stop structure on the fixing part 2, the wiring harness terminal 3 can be fixed in the fixing part 2.

[0069] In an optional embodiment, an elastic member 15 is provided in the base 1 , and the elastic member 15 is used to apply a force to the fixing portion 2 in a direction away from the base 1 .

[0070] In this embodiment, the elastic member 15 can apply a restoring force to the fixing portion 2, so that the fixing portion 2 can be reset after the wiring harness connecting end withdraws from the pushing structure and thus withdraws from the fixing portion 2.

[0071] In an optional embodiment, the elastic member 15 is provided inside the exit structure; and a sliding connection groove 8 is provided on the side wall of the exit structure.

[0072] In this embodiment, the elastic member 15 is arranged inside the cylinder 14 of the exit structure, and a part of the fixing part 2 is arranged inside the cylinder 14 so that it can be connected to the elastic member 15. The connection method can be abutment or other methods, and the elastic member 15 can apply a force to the fixing part 2 away from the base 1.

[0073] Since the elastic member 15 is arranged inside the cylinder 14, the fixing portion 2 needs to be divided into two parts, which are respectively arranged inside the cylinder 14 and outside the cylinder 14. The two parts are connected by the sliding connection groove 8 to achieve integrated movement.

[0074] Specifically, in this embodiment, the elastic member 15 is a compression spring, one end of which is provided on the base 1 and the other end abuts against the fixing portion 2 , exerting a force on the fixing portion 2 in a direction away from the base 1 .

[0075] It can be understood that in this embodiment, the elastic member 15 is a compression spring, but it is not limited to a compression spring. It can also be other types of elastic members 15, such as a spring, etc., as long as it can apply a force to the fixing part 2 away from the base 1.

[0076] In an optional embodiment, there are multiple elastic members 15 , and the multiple elastic members 15 are evenly arranged in a circular array around the exit structure.

[0077] In this embodiment, the elastic member 15 can be arranged outside the exit structure in the base 1 and evenly arranged in a circular array around the exit structure, so as to not only apply a force to the fixing seat away from the base 1, but also ensure the balance and stability of the force.

[0078] The elastic member 15 in this embodiment may also be configured as a compression spring.

[0079] It is understood that the position of the compression spring can be set according to actual needs. When the compression spring is set inside the cylinder 14 of the exit structure, it can use only one compression spring, which is low in cost. When the compression spring is set outside the cylinder 14 of the exit structure, in order to ensure the balance of force, multiple compression springs are required, which is costly and easy to install.

[0080] In an optional embodiment, the fixing portion 2 includes a main body portion 9 and a base plate 10; the main body portion 9 is arranged on one side of the base plate 10; the through hole is arranged on the main body portion 9; the base plate 10 includes an outer ring plate 12 and an inner core plate 11; the inner core plate 11 is slidably arranged in the exit structure.

[0081] In this embodiment, the base plate 10 of the fixed portion 2 is divided into an outer ring plate 12 and an inner core plate 11. The outer ring plate 12 is an annular structure and is disposed outside the cylinder 14 and fixedly connected to the main body 9 of the fixed portion 2; the inner core plate 11 is disposed inside the cylinder 14 and abuts against the compression spring.

[0082] In this embodiment, the inner core plate 11 and the outer ring plate 12 are connected together via a fixed connection portion 13 , and the fixed connection portion 13 is disposed in the sliding connection groove 8 of the exit structure.

[0083] In this embodiment, the connection between the fixed connection part 13 and the inner core plate 11 and the outer ring plate 12 can be an integrated setting. At this time, the upper end of the sliding connection groove 8 on the cylinder 14 of the exit structure is open for easy installation; the connection between the fixed connection part 13 and the inner core plate 11 and the outer ring plate 12 can also be snap-on, plug-in, etc., so as to facilitate the connection between the base plate 10 and the cylinder 14.

[0084] In an optional embodiment, a chassis 18 is further included, and a plurality of fixing units 17 are provided on the chassis 18 .

[0085] Specifically, in an optional embodiment, the fixing unit 17 and the chassis 18 are detachably connected.

[0086] The single fixing unit 17 for preventing the short circuit of the HIL test harness terminal is expanded into a group structure. The single fixing unit 17 can be placed on the chassis 18 by placing a magnet or Velcro at the location of the single fixing unit 17 to achieve flexible distribution placement, such as Figure 11 shown.

[0087] It should be noted that the shape of the chassis 18 is not limited to a rectangle. The circle represents a single fixing unit 17 and can be freely combined and placed.

[0088] It should also be pointed out that the detachable connection method between the fixing unit 17 and the chassis 18 can be a magnet or Velcro method, but it is not limited to the above two methods. It can also be other detachable connection methods, such as snap-on connection, etc., as long as it can achieve a convenient detachable connection between the fixing unit 17 and the chassis 18.

[0089] The beneficial effects of the embodiments of the present utility model are:

[0090] Insert the unused wiring harness terminals 3 into the fixed part 2 to isolate different wiring harness terminals 3 and avoid short circuits caused by mutual connection between the wiring harness terminals 3; when a certain wiring harness terminal 3 is needed, the wiring harness terminal 3 is separated from the fixed part by pressing the withdrawal structure and can be withdrawn from the fixed part 2, so that the wiring harness terminal 3 can be used normally.

[0091] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A fixing device for preventing short circuit of HIL test harness terminals, characterized in that: including a fixed unit; The fixing unit includes a fixing portion, an exit structure and a base; One end of the fixing portion and the exit structure are both arranged inside the base; The fixing portion is provided with a through hole, and the inner wall of the through hole is provided with a first retaining structure for the wiring harness terminal to prevent the wiring harness terminal from being separated from the fixing portion; One end of the exit structure is disposed in the through hole, and the wiring harness terminal inserted into the exit structure can be separated from the fixing portion.

2. The fixing device according to claim 1, characterized in that The first retaining structure is an annular retaining strip circumferentially arranged on the inner wall of the through hole.

3. The fixing device according to claim 1, characterized in that The exit structure includes a cylinder, and the second stop structure on the wiring harness terminal can enter the cylinder to realize the contraction function.

4. The fixing device according to claim 1, characterized in that An elastic member is provided in the base, and the elastic member is used to apply a force to the fixing portion in a direction away from the base.

5. The fixing device according to claim 4, characterized in that The elastic member is arranged inside the exit structure; A sliding connection groove is provided on the side wall of the exit structure.

6. The fixing device according to claim 4, characterized in that There are multiple elastic members, and the multiple elastic members are evenly arranged in a circular array around the exit structure.

7. The fixing device according to claim 1, characterized in that The fixing portion includes a main body and a bottom plate; The main body is arranged on one side of the bottom plate; The through hole is provided on the main body; The bottom plate includes an outer ring plate and an inner core plate; The inner core plate is slidably disposed within the exit structure.

8. The fixing device according to claim 1, characterized in that It also includes a chassis, on which a plurality of fixing units are arranged.

9. The fixing device according to claim 8, characterized in that The fixing unit and the chassis are detachably connected.

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