CN221199815U - Anti-interference test fixture for automobile electronic signal wire - Google Patents

Abstract

The utility model discloses an anti-interference test fixture for an automobile electronic signal wire, which belongs to the field of test fixtures and comprises a bottom plate, wherein an anti-interference test fixture body for the automobile electronic signal wire is fixedly arranged in the middle of the upper end of the bottom plate, limit posts are fixedly arranged at four corners of the upper end of the bottom plate, a baffle plate is fixedly arranged at the upper end of the limit posts, a bearing is fixedly embedded in the middle of the right end of the upper end of the bottom plate, a screw rod is fixedly arranged in the bearing, a driving block is fixedly arranged at the upper end of the screw rod, limit edges are sleeved outside the limit posts and the screw rod, the screw rod is in threaded connection with the limit edges, and an electromagnetic shielding cover is fixedly arranged at the limit edges.

Description

Anti-interference test fixture for automobile electronic signal wire

Technical Field

The utility model relates to the field of test jigs, in particular to an anti-interference test jig for an automobile electronic signal wire.

Background

The automobile electronic is a generic term for a vehicle body automobile electronic control device and a vehicle-mounted automobile electronic control device. Because electromagnetic waves are filled in the space environment, electromagnetic compatibility transient anti-interference test is required to be carried out on the automobile electronic product before the automobile electronic product leaves the factory so as to determine various performances of the automobile electronic product in a normal use environment.

Chinese patent grant bulletin number: CN204649870U, provide the anti-interference test fixture of the electronic signal line of the car, this patent couples the input end of the signal channel of one way to signal generator, the output end couples to measured, thus couple the interference signal of the signal generator to measured object, judge whether measured object works normally at this moment, and then confirm the anti-interference ability of the measured object; the jig has simple structure and low manufacturing cost; aiming at different tested objects and test requirements, the signal generator and the tested objects are only required to be connected into the corresponding coupling signal channels, and the replacement is convenient.

In the prior art, the channel coupling process is affected by electromagnetic wave interference and noise to generate the problem of higher error rate, so that the anti-interference test fixture for the automobile electronic signal wire cannot accurately judge the anti-interference capability of the automobile electronic signal through the coupling signal channel and the signal generator, and the accuracy of a test result is reduced.

Disclosure of utility model

1. Technical problem to be solved

Aiming at the problems existing in the prior art, the utility model aims to provide the anti-interference test fixture for the automobile electronic signal wire, which can prevent external electromagnetic waves from interfering channel coupling and improve the accuracy of test results by arranging an electromagnetic shielding cover capable of being lifted and opened at the upper end of the anti-interference test fixture for the automobile electronic signal wire.

2. Technical proposal

In order to solve the problems, the utility model adopts the following technical scheme.

The anti-interference test fixture for the automobile electronic signal wire comprises a bottom plate, an anti-interference test fixture body for the automobile electronic signal wire is fixedly installed in the middle of the upper end of the bottom plate, limiting columns are fixedly installed at four corners of the upper end of the bottom plate, a baffle is fixedly installed at the upper end of each limiting column, a bearing is fixedly embedded in the middle of the upper right end of the bottom plate, a screw rod is fixedly installed inside the bearing, a driving block is fixedly installed at the upper end of each screw rod, limiting edges are sleeved on the outer sides of the limiting columns and the screw rods, the screw rods are in threaded connection with the limiting edges, and an electromagnetic shielding cover is fixedly installed at the upper ends of the limiting edges. The staff can manually rotate the drive block and the screw rod, and then control spacing limit and electromagnetic shield cover to reciprocate and remove, will spacing limit through a plurality of spacing posts, improves electromagnetic shield cover's stability, and electromagnetic shield cover removes to lower extreme and bottom plate laminating, seals the anti-interference test tool body of car electronic signal line inside electromagnetic shield cover, makes the anti-interference test tool body of car electronic signal line keep apart with external electromagnetic wave.

Further, the anti-interference test fixture body of the automobile electronic signal wire is internally provided with a plurality of coupling signal channels, an output end and an input end of each coupling signal channel are fixedly arranged at the input end, an input end wire is fixedly arranged at the output end, a tested object is fixedly arranged at one end, far away from the output end, of each output end wire, a signal generator is fixedly arranged at one end, far away from the input end, of each input end wire, and when the anti-interference test fixture is used, interference signals of the signal generators are coupled to the tested object, and whether the tested object works normally or not is judged at the moment.

Further, the bottom plate upper end outside is provided with the rectangle frame groove, limit lower extreme fixed mounting has the rectangle framework, the rectangle framework is located rectangle frame groove upper end, and the shape phase-match in rectangle framework and rectangle frame groove, and during the use, when electromagnetic shield moves down and is sealed state, the rectangle framework moves down and inserts inside the rectangle frame groove in step, reduces electromagnetic shield and the clearance of bottom plate.

Further, the electromagnetic shielding cover comprises an aluminum frame body and a sound insulation plate, the sound insulation plate is arranged on the outer side of the aluminum frame body in a fixed connection mode, the aluminum frame body is fixedly connected with a limiting edge, plant limiting and wood mixture are adopted as materials of the sound insulation plate, and when the electromagnetic shielding cover is used, the aluminum frame body is used for shielding electromagnetic waves.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages that:

(1) According to the scheme, the electromagnetic shielding cover capable of being lifted and opened and closed is arranged at the upper end of the anti-interference test fixture of the automobile electronic signal wire, interference caused by external electromagnetic waves to channel coupling is avoided, and accuracy of test results is improved.

(2) When the electromagnetic shielding cover moves downwards to be in a sealing state, the rectangular frame body moves downwards synchronously and is inserted into the rectangular frame groove, so that the gap between the electromagnetic shielding cover and the bottom plate is reduced, and the sealing performance of the electromagnetic shielding cover is further improved.

(3) The aluminum frame body is used for shielding electromagnetic waves, and the aluminum frame body and the sound insulation plate have sound insulation effects, so that the sound insulation effect of the electromagnetic shielding cover is improved.

Drawings

FIG. 1 is a schematic view showing an open state structure of an electromagnetic shield according to the present utility model;

FIG. 2 is a schematic view showing a closed state structure of an electromagnetic shielding case according to the present utility model;

Fig. 3 is a cross-sectional view of an anti-interference test fixture for an automobile electronic signal line in the utility model.

The reference numerals in the figures illustrate:

1. a bottom plate; 2. a rectangular frame groove; 3. a limit column; 4. a baffle; 5. limit edges; 6. an electromagnetic shield; 61. an aluminum frame; 62. a sound insulation board; 7. the anti-interference test fixture body of the electronic signal wire of the car; 8. an output end wire; 9. an input end lead; 10. a test object; 11. a signal generator; 12. a bearing; 13. a screw rod; 14. a driving block; 15. a rectangular frame.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model; it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present utility model are within the protection scope of the present utility model.

In the description of the present utility model, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1:

Referring to fig. 1-3, the anti-interference test fixture for the automobile electronic signal wire comprises a bottom plate 1, wherein an anti-interference test fixture body 7 for the automobile electronic signal wire is fixedly installed in the middle of the upper end of the bottom plate 1, limit posts 3 are fixedly installed at four corners of the upper end of the bottom plate 1, a baffle 4 is fixedly installed at the upper end of each limit post 3, a bearing 12 is fixedly embedded in the middle of the right end of the bottom plate 1, a screw rod 13 is fixedly installed in the bearing 12, a driving block 14 is fixedly installed at the upper end of each screw rod 13, limit edges 5 are sleeved outside the limit posts 3 and the screw rods 13, the screw rods 13 are in threaded connection with the limit edges 5, and an electromagnetic shielding cover 6 is fixedly installed at the upper ends of the limit edges 5. The staff can manually rotate the driving block 14 and the screw rod 13, and then control the lifting movement of the limit edge 5 and the electromagnetic shielding cover 6, limit the limit edge 5 through a plurality of limit posts 3, improve the stability of the electromagnetic shielding cover 6, and the electromagnetic shielding cover 6 moves to the lower end to be attached to the bottom plate 1, so that the anti-interference test jig body 7 of the automobile electronic signal wire is sealed inside the electromagnetic shielding cover 6, the anti-interference test jig body 7 of the automobile electronic signal wire is isolated from external electromagnetic waves, and the test efficiency is improved.

Referring to fig. 3, an anti-interference test fixture body 7 for an automotive electronic signal line is internally provided with a plurality of coupling signal channels, an output end and an input end of each coupling signal channel, an input end is fixedly provided with an input end lead 9, an output end lead 8 is fixedly provided with an output end lead 8, a tested object 10 is fixedly provided at one end of the output end lead 8 away from the output end, a signal generator 11 is fixedly provided at one end of the input end lead 9 away from the input end, and when the anti-interference test fixture is used, interference signals of the signal generator 11 are coupled to the tested object 10 to judge whether the tested object 10 works normally at the moment, so as to determine the anti-interference capability of the tested object 10.

The bottom plate 1 upper end outside is provided with rectangle frame groove 2, and limit 5 lower extreme fixed mounting has rectangle framework 15, and rectangle framework 15 is located rectangle frame groove 2 upper end, and rectangle framework 15 and rectangle frame groove 2's shape assorted, and during the use, when electromagnetic shield 6 moves down and is sealed state, rectangle framework 15 moves down and inserts rectangle frame groove 2 inside in step, reduces electromagnetic shield 6 and bottom plate 1's clearance, further improves electromagnetic shield 6's leakproofness.

The electromagnetic shield 6 includes aluminium framework 61 and acoustic celotex board 62, and acoustic celotex board 62 passes through fixed connection mode to be installed in aluminium framework 61 outside, and aluminium framework 61 and spacing limit 5 fixed connection, and the material of acoustic celotex board 62 adopts plant spacing and timber mixture, and during the use, aluminium framework 61 is used for shielding electromagnetic wave, and aluminium framework 61 and acoustic celotex board 62 all possess the sound insulation effect, improve the sound insulation effect of electromagnetic shield 6.

The working principle of the utility model is as follows: firstly, a tested object 10 to be tested is connected with an output end wire 8, a worker can manually rotate a driving block 14 and a screw rod 13, then the limiting edge 5 and the electromagnetic shielding cover 6 are controlled to move downwards, the limiting edge 5 is limited through a plurality of limiting columns 3, the stability of the electromagnetic shielding cover 6 is improved, the electromagnetic shielding cover 6 moves to the lower end to be attached to the bottom plate 1, the anti-interference test jig body 7 of the automobile electronic signal wire is sealed inside the electromagnetic shielding cover 6, the anti-interference test jig body 7 of the automobile electronic signal wire is isolated from external electromagnetic waves, and the test efficiency is improved. The anti-interference test fixture body 7 of the automobile electronic signal wire is connected with a power supply, an interference signal of the signal generator 11 is coupled to the tested object 10, whether the tested object 10 works normally at the moment is judged, and then the anti-interference capability of the tested object 10 is determined.

The above description is only of the preferred embodiments of the present utility model; the scope of the utility model is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present utility model, and the technical solution and the improvement thereof are all covered by the protection scope of the present utility model.

Claims (6)

1. The utility model provides an anti-interference test fixture of car electronic signal line, includes bottom plate (1), its characterized in that: the anti-interference testing jig is characterized in that an anti-interference testing jig body (7) for an automobile electronic signal wire is fixedly mounted at the middle of the upper end of the bottom plate (1), limiting columns (3) are fixedly mounted at four corners of the upper end of the bottom plate (1), a baffle (4) is fixedly mounted at the upper end of the limiting columns (3), a bearing (12) is fixedly embedded in the middle of the upper right end of the bottom plate (1), a screw rod (13) is fixedly mounted in the bearing (12), a driving block (14) is fixedly mounted at the upper end of the screw rod (13), limiting edges (5) are sleeved outside the limiting columns (3) and the screw rod (13), the screw rod (13) is in threaded connection with the limiting edges (5), and an electromagnetic shielding cover (6) is fixedly mounted at the upper end of the limiting edges (5).

2. The automotive electronics signal line anti-interference test fixture of claim 1, wherein: the anti-interference test fixture for the automobile electronic signal wire comprises an anti-interference test fixture body (7), wherein a plurality of path coupling signal channels are arranged in the anti-interference test fixture body, the path coupling signal channels are provided with an output end and an input end, an input end lead (9) is fixedly arranged at the input end, and an output end lead (8) is fixedly arranged at the output end.

3. The automotive electronics signal line anti-interference test fixture of claim 2, wherein: one end of the output end wire (8) far away from the output end is fixedly provided with a tested object (10), and one end of the input end wire (9) far away from the input end is fixedly provided with a signal generator (11).

4. The automotive electronics signal line anti-interference test fixture of claim 1, wherein: the novel anti-theft device is characterized in that a rectangular frame groove (2) is formed in the outer side of the upper end of the bottom plate (1), a rectangular frame body (15) is fixedly arranged at the lower end of the limiting edge (5), the rectangular frame body (15) is located at the upper end of the rectangular frame groove (2), and the rectangular frame body (15) is matched with the rectangular frame groove (2) in shape.

5. The automotive electronics signal line anti-interference test fixture of claim 1, wherein: the electromagnetic shielding cover (6) comprises an aluminum frame body (61) and a sound insulation plate (62), wherein the sound insulation plate (62) is arranged on the outer side of the aluminum frame body (61) in a fixed connection mode, and the aluminum frame body (61) is fixedly connected with the limiting edge (5).

6. The automotive electronics signal line anti-interference test fixture of claim 5, wherein: the material of the sound insulation plate (62) adopts plant limiting and wood mixture.