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

Abstract

The invention 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 invention, the unused wire harness terminals are inserted into the fixing part, so that different wire harness terminals are isolated, and short circuit caused by mutual connection of the wire harness terminals is avoided; 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 invention relates to the technical field of automobile software testing, and in particular to a fixing device for preventing a HIL test harness terminal from being short-circuited. Background Art

[0002] In the process of automobile development, system software and mechanical hardware structures are usually designed in parallel, and testing can only be carried out after integration. If some serious safety failures are found after integration, it may cause personal injury, damage to equipment and project delays. In order to reduce the occurrence of these failures, HIL testing has been 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 carried out in parallel. When switching between projects, different projects are increasingly sharing 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. Summary of the invention

[0005] The object of the present invention is to provide a fixing device for preventing a HIL test harness terminal from being short-circuited, which can enable a HIL test platform to have the ability to prevent a harness terminal from being short-circuited.

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

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

[0008] The fixing unit comprises 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 stop structure cooperating with the wiring harness, which can prevent the wiring harness terminal from being separated from the fixing portion;

[0011] One end of the withdrawal structure is disposed in the through hole, so that the wire harness inserted into the withdrawal 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 strip 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 disposed 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 arranged 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 arranged 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 in the exit structure.

[0024] In an optional embodiment, a chassis is further included, and a plurality of fixing units are arranged 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 invention are:

[0027] Insert unused wiring harness terminals into the fixed part to isolate different wiring harness terminals and avoid short circuit caused by mutual connection of 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 withdrawal structure and can be withdrawn 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 drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A front view of a fixing device provided by an embodiment of the present invention;

[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 diagram of the structure of a wiring harness terminal of a fixing device provided in an embodiment of the present invention;

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

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

[0035] Figure 7 A top view of a bottom plate of a fixing device provided by an embodiment of the present invention;

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

[0037] Fig. 9 for Figure 8 CC section view;

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

[0039] Fig.11 A schematic structural diagram of a base of a fixing device provided in an embodiment of the present invention;

[0040] Fig.12 A schematic structural diagram of a fixing device provided in an embodiment of the present invention having a plurality of 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] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here 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 invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are 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, further definition and explanation thereof is not required in subsequent drawings.

[0046] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0047] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0048] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] The following is combined with Figure 1 To Attachment Fig.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 present invention provides a fixing device for preventing a HIL test harness terminal from short-circuiting, comprising a fixing unit 17; the fixing unit 17 comprises a fixing portion 2, a withdrawal structure, a harness terminal 3 and a base 1; one end of the fixing portion 2 and the withdrawal structure are both arranged inside the base 1; a through hole is arranged on the fixing portion 2, a first retaining structure is arranged on the inner wall of the through hole, a second retaining structure is arranged on the outer wall of the harness terminal 3, the second retaining structure is arranged in cooperation with the first retaining structure, and can prevent the harness terminal 3 from detaching from the fixing portion 2; one end of the withdrawal structure is arranged in the through hole, and the harness terminal 3 can be inserted into the withdrawal 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 section view.

[0052] In this embodiment, the shape of the fixing device can be as follows: Figure 1 and Figure 2 The cylindrical shape may 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 in shape 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] Fig.10 The base 1 is connected to the exit structure and mainly plays the role of fixing the exit structure and regulating the running track of the fixing part 2.

[0058] The base 1 may 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 as to limit the moving track of the fixing part 2 .

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

[0060] Specifically, in the present 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 arranged in pairs, with one barb 6 being arranged at each end of the diameter of the wiring harness terminal 3 , forming a pair of barbs 6 .

[0062] It 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 strip 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 wiring harness terminal 3 when positioning, 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 stop 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, Fig. 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 part 2 are pressed down at the same time. At this time, while ensuring that the fixing part 2 is still in the pressed position, the terminal can be manually removed smoothly; Figure 2As shown, when the upper end of the first stop structure on the fixing part 2 coincides with the upper end of the exit structure, the barb 6 of the second stop 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 canceled, and the fixing part 2 is 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 end 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 disposed 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, by providing the elastic member 15 , a restoring force can be applied 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 arranged inside the exit structure; and a sliding connection groove 8 is arranged 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 fixed 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 fixed 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 arranged inside the cylinder 14 and outside the cylinder 14 respectively. 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 arranged on the base 1 , and the other end is in contact with 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 sheet, 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 fixed 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 understandable 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, only one compression spring is needed, which is low in cost; when the compression spring is set outside the cylinder 14 of the exit structure, multiple compression springs are required to ensure the balance of force, 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 bottom plate 10 of the fixed part 2 is divided into an outer ring plate 12 and an inner core plate 11. The outer ring plate 12 is an annular structure, arranged outside the cylinder 14 and fixedly connected to the main body 9 of the fixed part 2; the inner core plate 11 is arranged 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, which is convenient for 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 disposed on the chassis 18 .

[0085] Specifically, in an optional implementation, 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, and 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, so as to achieve flexible distribution placement, such as Fig.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, 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 invention 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 only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fixing device for preventing short circuit of HIL test harness terminals, characterized in that: Including fixed unit; The fixing unit comprises 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 stop structure for the wiring harness terminal to prevent the wiring harness terminal from being separated from the fixing portion; One end of the withdrawal structure is disposed in the through hole, and the wiring harness terminal inserted into the withdrawal structure can be separated from the fixing portion.

2. The fixing device according to claim 1, characterized in that: The second stop structure is an elastic barb.

3. The fixing device according to claim 1, characterized in that: The first retaining structure is an annular retaining strip arranged along the circumferential direction on the inner wall of the through hole.

4. The fixing device according to claim 1, characterized in that: The exit structure comprises a cylinder, and the second stop-exit structure can enter the cylinder to realize the contraction function.

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

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

7. The fixing device according to claim 5, characterized in that: There are multiple elastic members, and the multiple elastic members are evenly arranged in a circular array around the exit structure.

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

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

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

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