Aircraft switch conductivity test tool

Abstract

The utility model relates to the technical field of microswitch performance detection, and provides an aircraft switch conductivity test tool comprising a base plate provided with a support; the dial indicator is fixedly mounted on the bracket; the test box is fixedly connected to the bottom plate and is opposite to the bracket, a support for fixing an electric switch and a wiring terminal for connecting an electric switch contact are arranged in the test box, and a test hole electrically connected with the wiring terminal is formed in the side surface, far away from the bracket, of the test box; a meter pen of the universal meter is inserted into the test hole; the test rod is rotationally connected to the side surface, opposite to the bracket, of the test box; wherein one end of the test rod abuts against the measuring head of the dial indicator, and the other end extends into the test box and abuts against the button of the switch. Through slow rotation of the test rod, the process that the button of the switch is completely compressed or rebounded can be simulated, meanwhile, whether the conductivity of the switch is normal or not can be judged by combining the readings of the universal meter and the dial indicator, and hidden faults occurring in the process that the button of the switch is compressed or rebounded can be detected.

Description

TECHNICAL FIELD

[0001] The utility model relates to microswitch performance detection technical field, concretely relates to an airplane electric door conductivity test frock. BACKGROUND

[0002] The circuit design of modern civil aircraft electromechanical accessories has an electric door, and the electric door has a wide range of uses, that is, can be used as a control switch, and can also be used as a signal switch.

[0003] The electric door will appear fatigue or damage in different degrees after long-time execution of switch action, and therefore needs to be regularly detected in conductivity to determine the good or bad of the full stroke performance of the electric door. However, the conductivity detection currently commonly used cannot completely detect the hidden faults of the electric door in the compression or rebound process of the button thereof. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides an airplane electric door conductivity test frock, which can find abnormal conditions in the on or off process of the electric door, so as to detect the hidden faults of the electric door in the compression or rebound process of the button thereof.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] An airplane electric door conductivity test frock comprises:

[0007] A bottom plate, which is provided with a support;

[0008] A dial indicator, which is fixedly installed on the support;

[0009] A test box, which is fixedly connected to the bottom plate and opposite to the support, is internally provided with a support for fixing the electric door and a terminal for connecting the contact points of the electric door, and the side face away from the support is provided with a test hole electrically connected with the terminal;

[0010] A multimeter, whose probe is inserted into the test hole; and

[0011] A test rod, which is rotationally connected to the side face of the test box opposite to the support;

[0012] Wherein, one end of the test rod is in abutting connection with the measuring head of the dial indicator, and the other end extends into the test box and is in abutting connection with the button of the electric door.

[0013] In one embodiment of the present application, the support is provided with an elastic hole coaxial with the test rod;

[0014] The measuring rod of the dial indicator is inserted into the elastic hole in a manner that the measuring head faces the test rod, and is locked by a first screw threadedly connected with the upper end of the support.

[0015] In one embodiment of the present disclosure, a pair of first long holes are formed on the bottom plate, and the lower end of the support is connected to the first long holes by a second screw;

[0016] The second screw is loosened, and the support can be moved along the length direction of the first long hole to adjust the pressure of the measuring head of the dial gauge against the end of the test rod.

[0017] In one embodiment of the present disclosure, the dial gauge is a digital dial gauge.

[0018] In one embodiment of the present disclosure, two third screws are screwed on the upper end of the support, and the third screws are removed and screwed through the mounting hole of the switch to fix the switch.

[0019] A pair of second long holes are formed on the inner bottom of the test box, which are perpendicular to the first long holes and arranged in a line, and the lower end of the support is connected to the second long holes by a fourth screw;

[0020] The fourth screw is loosened, and the support can be moved along the length direction of the second long hole to adjust the button of the switch to align with the other end of the test rod.

[0021] In one embodiment of the present disclosure, a nylon plate is arranged in the test box, which is perpendicular to the test rod in the axial direction.

[0022] The wiring terminal is fixedly installed on the nylon plate to achieve insulation.

[0023] In one embodiment of the present disclosure, the wiring terminal corresponds to the test hole one by one, and three are arranged respectively to match the three contacts of the switch.

[0024] In one embodiment of the present disclosure, the test box is further provided with a cover plate.

[0025] A rectangular hole is formed in the middle of the cover plate to expose the support for fixing the switch.

[0026] In one embodiment of the present disclosure, the cover plate is a transparent acrylic cover plate.

[0027] In one embodiment of the present disclosure, the test rod is sequentially divided into a handle, a light rod, a screw rod and a pressure head.

[0028] The handle is connected to the measuring head of the dial gauge.

[0029] A spring is sleeved on the light rod.

[0030] The spring is respectively in contact with the handle and the rectangular block in the test box at both ends;

[0031] The screw thread of the screw rod penetrates the rectangular block;

[0032] The pressure head is in contact with the button of the electric switch.

[0033] Compared with the prior art, the utility model has the beneficial effects that:

[0034] Through the slow rotation of the test rod, the process that the button of the electric switch is completely compressed or rebounds can be simulated, and whether the conduction of the electric switch is normal can be judged by combining the readings of the multimeter and the dial indicator, the hidden fault of the electric switch in the process that the button of the electric switch is compressed or rebounds can be detected, the reliability and accuracy of the electric switch detection are improved, and the maintenance quality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0036] Fig. 1 It is a three-dimensional structure schematic diagram of the utility model;

[0037] Fig. 2 It is a top view structure schematic diagram of the utility model after the cover plate is removed;

[0038] Fig. 3 It is a front view structure schematic diagram of the test rod. DETAILED DESCRIPTION

[0039] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be essentially exemplary rather than limiting.

[0040] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model by indicating or implying that the indicated device or element must have a particular orientation, construction and operation.

[0041] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0042] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication or interaction relationship between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0043] In the utility model, unless otherwise specifically defined and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or the indirect contact of the first and second features through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include the vertical direction of the first feature above and obliquely above the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include the vertical direction of the first feature below and obliquely below the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0044] The following disclosure provides many different embodiments or examples for implementing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the utility model.

[0045] The embodiments of the utility model will be described in detail below with reference to the drawings.

[0046] Referring to Figs. 1-3 The utility model provides a kind of airplane electric door conducting test tool, comprising:

[0047] Bottom plate 10, it is equipped with support 11 on it;

[0048] Dial gauge (not shown in drawing), fixed installation is in support 11;

[0049] Test box 20, fixedly connected to bottom plate 10 and opposite support 11, its inside is equipped with the support 21 for fixing electric door and the wiring terminal 22 for connecting electric door contact point, the side away from support 11 is equipped with the test hole 23 electrically connected with wiring terminal 22;

[0050] Multimeter (not shown in drawing), its meter pen is inserted into test hole 23;And

[0051] Test rod 30, rotationally connected to the side of test box 20 opposite support 11;

[0052] Among them, test rod 30 one end and the measuring head of dial gauge abut connection, the other end extends to test box 20 and the button of electric door abut connection.

[0053] In use, the electric switch to be tested is fixed on the support 21 and its contact is connected with the terminal 22; then the dial gauge is fixed on the bracket 11 and its probe is abutted on one end of the testing rod 30 in a pressed state, at this time the dial gauge is adjusted to zero; then the probe of the multimeter is inserted into the testing hole 23 and adjusted to the ohm scale, and the reading of the multimeter is observed to be normal. At this time, the testing rod 30 is slowly rotated clockwise by one hand to make one end of the testing rod 30 abut the button of the electric switch, then the testing rod 30 is continuously rotated slowly until the button of the electric switch is completely compressed by the testing rod 30, in the whole compression process, the change of the reading of the multimeter is observed to be abnormal, and the reading of the dial gauge is observed, the compression distance of the button of the electric switch is recorded; similarly, the testing rod 30 is slowly rotated counterclockwise by one hand to make one end of the testing rod 30 slowly leave the button of the electric switch, the testing rod 30 is continuously rotated slowly until the button of the electric switch is completely separated from the testing rod 30, in the whole rebound process, the change of the reading of the multimeter is observed to be abnormal, and the reading of the dial gauge is observed, the rebound distance of the button of the electric switch is recorded. If the reading of the multimeter in the compression and rebound processes of the button of the electric switch is normal (i.e. the resistance value when the button is compressed and the electric switch is turned on is less than 1Ω, and the resistance value when the button rebounds and the electric switch is turned off is greater than 1MΩ), and the reading of the dial gauge is within the preset range (for example, less than 0.3mm), it is proved that the electric switch is normal and there is no hidden fault, i.e. the full stroke performance is good; otherwise, it is proved that the electric switch is not normal and needs to be repaired or replaced. That is to say, through the slow rotation of the testing rod 30, the process that the button of the electric switch is completely compressed or rebounds can be simulated, and whether the electric switch is normal can be judged by combining the readings of the multimeter and the dial gauge, the hidden fault of the electric switch in the compression or rebound process of the button of the electric switch can be detected, the reliability and accuracy of the detection of the electric switch are improved, and the repair quality is improved.

[0054] Referring to Fig. 1 As shown in the figure, the bracket 11 is provided with an elastic hole coaxial with the testing rod 30 (which is composed of two semicircular holes, similar to an expansion sleeve), and the probe of the dial gauge is inserted into the elastic hole and locked by the first screw threadedly connected to the upper end of the bracket 11. In this way, the dial gauge can be fixed and installed.

[0055] The bottom plate 10 is provided with a pair of first long holes 12, and the lower end of the bracket 11 is connected to the first long holes 12 by the second screw. When the second screw is loosened, the bracket 11 can move along the length direction of the first long hole 12 to adjust the pressure degree of the probe of the dial gauge abutting on one end of the testing rod 30.

[0056] In this embodiment, the dial gauge is preferably a digital dial gauge. The digital dial gauge has high precision, and the reading is intuitive and accurate.

[0057] The upper end of the support 21 is threaded with two third screws. Remove the third screws, pass them through the mounting hole of the switch, and tighten them to the upper end of the support 21 to fix the switch. The bottom of the test box 20 has a pair of second elongated holes 24 that are perpendicular to the length of the first elongated hole 12 and arranged in a row. The lower end of the support 21 is connected to the second elongated holes 24 by a fourth screw. Loosen the fourth screw, and the support 21 can move along the length of the second elongated hole 24 to adjust the switch button and align it with the other end of the test rod 30.

[0058] The test box 20 contains a nylon plate 25 whose surface is perpendicular to the axis of the test rod 30, and the wiring terminal 22 is fixedly installed on the nylon plate 25 to achieve insulation.

[0059] See Fig. 1 and Fig. 2 As shown, each terminal 22 corresponds to a test hole 23, with three terminals provided to match the three contacts of the switch. Specifically, one probe of the multimeter is inserted into one test hole 23 to correspond to the common contact (C) of the switch, while the other probe is switched between the other two test holes 23 to correspond to the normally open contact (NO) and normally closed contact (NC) of the switch.

[0060] The test box 20 is also provided with a cover plate 26, and a rectangular hole is provided in the middle of the cover plate 26 to expose the support 21 for easy fixing of the switch.

[0061] In this embodiment, the cover plate 26 is preferably a transparent acrylic cover plate. This facilitates observation of the contact between the switch contacts and the wiring terminal 22, and the contact between the button and the test rod 30.

[0062] See Fig. 2 and Fig. 3 As shown, the test rod 30 consists of a handle 31, a smooth rod 32, a screw 33, and a pressure head 34. The handle 31 is connected to the probe of the dial indicator. A spring 35 is fitted onto the smooth rod 32, with both ends of the spring 35 contacting the handle 31 and a rectangular block 27 inside the test box 20. The screw 33 is threaded through the rectangular block 27 (this allows for smoother rotation of the test rod 30). The pressure head 34 is connected to the button of the power switch. Rotating the handle 31 rotates the test rod 30, compressing the spring 35 and thus limiting the test rod 30 to rotate slowly at a low speed, simulating the process of the power switch button being fully compressed or rebounding.

[0063] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.

Claims

1. A fixture for testing the continuity of an aircraft power switch, characterized in that, include: A base plate on which a support frame is mounted; A dial indicator is fixedly installed on the bracket; The test box is fixedly connected to the base plate and opposite to the bracket. Inside, there is a support for fixing the switch and a terminal block for connecting the switch contacts. On the side away from the bracket, there is a test hole that is electrically connected to the terminal block. A multimeter, with its probes inserted into the test holes; and The test rod is rotatably connected to the side of the test box facing the bracket; One end of the test rod is in contact with the probe of the dial indicator, and the other end extends into the test box and is in contact with the button of the power switch.

2. The aircraft switch continuity testing fixture according to claim 1, characterized in that: The bracket has an elastic hole coaxial with the test rod; The dial indicator's probe is inserted into the elastic hole with the probe facing the test rod, and then locked in place by a first screw threaded to the upper end of the bracket.

3. The aircraft switch continuity testing fixture according to claim 2, characterized in that: A pair of first elongated holes are provided on the base plate, and the lower end of the bracket is connected to the first elongated holes by a second screw; Loosening the second screw allows the bracket to move along the length of the first elongated hole to adjust the pressure exerted by the dial indicator probe against one end of the test rod.

4. The aircraft switch continuity testing fixture according to any one of claims 1 to 3, characterized in that, The dial indicator is a digital dial indicator.

5. The aircraft switch continuity testing fixture according to claim 3, characterized in that: The upper end of the support is threaded with two third screws. Remove the third screws, pass them through the mounting hole of the switch, and then tighten them to the upper end of the support to fix the switch. The bottom of the test box has a pair of second long holes that are perpendicular to the first long hole and arranged in a row. The lower end of the support is connected to the second long holes by a fourth screw. Loosen the fourth screw, and the support can move along the length of the second elongated hole to adjust the button of the switch so as to align with the other end of the test rod.

6. The aircraft switch continuity testing fixture according to claim 1 or 5, characterized in that: The test box contains a nylon plate whose surface is perpendicular to the axis of the test rod. The wiring terminals are fixedly installed on the nylon plate to achieve insulation.

7. The aircraft switch continuity testing fixture according to claim 6, characterized in that, Each of the wiring terminals corresponds to one of the test holes, and three terminals are provided to match the three contacts of the switch.

8. The aircraft switch continuity testing fixture according to claim 1 or 7, characterized in that: The test box is also equipped with a cover; A rectangular hole is provided in the middle of the cover plate to expose the support for easy fixing of the switch.

9. The aircraft switch continuity testing fixture according to claim 8, characterized in that, The cover plate is a transparent acrylic cover plate.

10. The aircraft switch continuity testing fixture according to claim 1, characterized in that: The test rod consists of a handle, a guide rod, a screw, and a pressure head. The handle is in contact with the probe of the dial indicator; A spring is fitted onto the optical rod; The two ends of the spring respectively abut against the handle and the rectangular block inside the test box; The screw thread penetrates the rectangular block; The pressure head is in contact with the button of the power switch.

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