A user-friendly standardized test fixture for potentiometers

Abstract

This utility model relates to the field of potentiometer testing technology, and more particularly to a user-friendly standardized potentiometer testing fixture, which mainly consists of a mounting base, a cover plate, clamping pins, pin sleeves, micro switches, and connectors. The probe clamps of this utility model have high hardness and are not easily deformed. Furthermore, the probe clamps and pin sleeves can be matched to the size and gap of the potentiometer pins. The pin sleeve opening is set in the mounting base of the fixture; the cable only needs to be soldered to the pin sleeve. Routine maintenance only requires replacing the probe clamps, eliminating the need for soldering. Since the probe clamps only require opening for installation, the processing difficulty of the fixture base is greatly reduced, and standardization is achieved. A miniature aviation connector replaces the original fixture's one clamp, one cable structure, making storage easier and more aesthetically pleasing. For encoders and potentiometers with switches, serial port connectors can be used, and the wiring of both miniature aviation connectors and serial port connectors is standardized.

Description

Technical Field

[0001] This utility model relates to the field of potentiometer testing technology, and in particular to a standardized potentiometer testing fixture that is easy to use. Background Technology

[0002] Traditional potentiometer testing fixtures are mostly clip-on type fixtures, which have many shortcomings in use:

[0003] 1) Its clips are made of copper and have not undergone surface treatment. They are not hard enough. The potentiometer pins wear out after about 5,000 insertions and removals and need to be replaced. Moreover, replacement is inconvenient and requires a specialist to disassemble and resolder them.

[0004] 2) Since the housing of the fixture is made of acrylic, the screws for fixing the clamps are M2, and the threaded holes are easy to slip. The main problem is that the clamps are only one size, while the pins and spacing of potentiometers vary in size, making it very inconvenient to match them. Special potentiometers and encoders cannot be used. The processing of the fixture housing is also difficult, requiring two or more acrylic sheets to be spliced ​​together.

[0005] 3) The fixture housing cannot be standardized due to the clamping mechanism.

[0006] 4) The test connection cable comes with one cable per fixture, which is not universal and is not fixed. It is not only easy to desolder, but the color of the cable does not correspond to the order of the 1, 2, and 3 pins of the potentiometer.

[0007] In view of this, the inventors aim to design a standardized potentiometer test fixture that is easy to use. Summary of the Invention

[0008] The purpose of this invention is to overcome the aforementioned problems in traditional technologies and provide a standardized potentiometer testing fixture that is easy to use.

[0009] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0010] A user-friendly standardized potentiometer test fixture includes a mounting base, a cover plate, clamping pins, pin sleeves, a micro switch, and a connector. The mounting base has a cable connection cavity inside. The cover plate is fastened to the opening of the cable connection cavity. Three clamping pins are inserted side-by-side at the front end of the mounting base, and a pin sleeve is installed at the inner end of each clamping pin. A micro switch is installed at the side end of the mounting base. A connector for connecting to an instrument is installed at the rear end of the mounting base. The connector is a miniature aviation plug or a serial port connector. Each pin sleeve is connected to the connector via a cable. The micro switch can reset the potentiometer during testing by disconnecting pin 1 from the instrument.

[0011] Furthermore, in the aforementioned easy-to-use standardized potentiometer test fixture, the front end of the mounting base is provided with a plug hole to facilitate the exposure of the clip pins.

[0012] Furthermore, in the aforementioned easy-to-use standardized potentiometer test fixture, each of the cables is a different color, and the color of each cable corresponds to the pin number of the potentiometer and the connector pin number.

[0013] Furthermore, in the aforementioned user-friendly standardized potentiometer test fixture, the connector is a female plug, and the instrument is equipped with a male plug for easy connection to the female plug.

[0014] Furthermore, in the aforementioned user-friendly standardized potentiometer test fixture, both the mounting base and the cover plate are made of transparent acrylic material.

[0015] The beneficial effects of this utility model are:

[0016] 1. The probe clips are standard purchased parts with high hardness, which are not easily deformed. They have not deformed even after hundreds of thousands of tests. There are four types of probe clips and four types of pin sleeves that can be matched to the size and gap of the potentiometer pins.

[0017] 2. Set the opening of the needle sleeve in the mounting base of the fixture. The cable only needs to be soldered to the needle sleeve. During routine maintenance, only the probe clip needs to be replaced, and soldering is not required.

[0018] 3. Since the probe clip only needs to be installed by drilling holes, the processing difficulty of the fixture body is greatly reduced, and it can be standardized.

[0019] 4. Miniature aviation connectors replace the traditional test fixture structure of one fixture and one cable. This eliminates the need for male connectors on the instrument, while the test fixture uses a uniform female connector, simplifying storage and improving aesthetics. Furthermore, serial connectors can be used for encoders and potentiometers with switches, eliminating issues of poor contact and desoldering. The wiring of both miniature aviation connectors and serial connectors follows a unified standard. Cable colors correspond to potentiometer pins and connector pin numbers, facilitating standardized manufacturing.

[0020] Of course, any product implementing this utility model does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the standardized potentiometer test fixture in Example 1;

[0023] Figure 2 This is a top view of the standardized test fixture for potentiometers in Example 1;

[0024] Figure 3 This is a rear view schematic diagram of the standardized potentiometer test fixture in Example 1;

[0025] Figure 4 This is a schematic diagram of the fixture in Embodiment 1 after omitting the cover plate;

[0026] Figure 5 This is an assembly diagram of the clip needle and needle sleeve;

[0027] Figure 6 This is a schematic diagram of the structure of the standardized potentiometer test fixture in Example 2;

[0028] In the attached diagram, the components represented by each number are as follows:

[0029] 1-Mounting base, 2-Cover plate, 3-Clamping pin, 4-Pin sleeve, 5-Micro switch, 6-Connector. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Example 1

[0031] like Figures 1-5 As shown, this embodiment provides a user-friendly standardized potentiometer test fixture, including a mounting base 1, a cover plate 2, clamping pins 3, pin sleeves 4, a micro switch 5, and a connector 6. The mounting base 1 has a cable connection cavity inside. The cover plate 2 is fastened to the opening of the cable connection cavity. Three clamping pins 3 are inserted side-by-side at the front end of the mounting base 1, and a pin sleeve 4 is installed inside each clamping pin 3. A micro switch 5 is installed on the side end of the mounting base 1. A connector for connecting to an instrument is installed at the rear end of the mounting base 1. The connector is a miniature aviation plug. Each pin sleeve 4 is connected to the connector 6 via a cable. The micro switch 5 can reset the potentiometer during testing by disconnecting the connection between the potentiometer pin 1 and the instrument.

[0032] In this embodiment, the front end of the mounting base 1 is provided with a insertion hole to facilitate the exposure of the clip pin 3.

[0033] In this embodiment, each cable is a different color, and the color of each cable corresponds to the pin of the potentiometer and the pin number of the plug.

[0034] In this embodiment, connector 8 is a female plug, and the instrument is equipped with a male plug that facilitates connection with the female plug.

[0035] In this embodiment, both the mounting base 1 and the cover plate 2 are made of transparent acrylic material.

[0036] One specific application of this embodiment is as follows: the probe clips are purchased standard parts, with high hardness and not easily deformed. They remain unchanged even after hundreds of thousands of tests. Four types of probe clips and four types of pin sleeves are available to match the size and gap of the potentiometer pins. The pin sleeves are installed with openings in the fixture's mounting base. The cables only need to be soldered to the pin sleeves. Routine maintenance only requires replacing the probe clips, eliminating the need for soldering. Since the probe clips only require installation with openings, the machining difficulty of the fixture base is greatly reduced, and standardization is achieved. Miniature aviation connectors replace the original structure of one clamp and one cable per test fixture. This requires only male connectors on the instrument, while the test fixture uses a uniform female connector, facilitating storage and improving aesthetics. Furthermore, serial connectors can be used for encoders and potentiometers with switches, eliminating issues of poor contact and desoldering. The wiring of both miniature aviation connectors and serial connectors is standardized. The cable colors correspond to the potentiometer pins and the connector pin numbers, facilitating standardized manufacturing. Example 2

[0037] The difference between this embodiment and Embodiment 1 is that connector 6 is a serial port connector.

[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to specific implementation methods. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A potentiometer standardization test fixture for ease of use, characterized by, The device includes a mounting base, a cover plate, clamping pins, pin sleeves, a micro switch, and a connector. The mounting base has a cable connection cavity inside. The cover plate is fastened to the opening of the cable connection cavity by fasteners. Three clamping pins are inserted side by side at the front end of the mounting base, and a pin sleeve is installed at the inner end of each clamping pin. A micro switch is installed at the side end of the mounting base. A connector for connecting to an instrument is installed at the rear end of the mounting base. The connector is a miniature aviation plug or a serial port connector. Each pin sleeve is connected to the connector via a cable. The micro switch can reset the device during potentiometer testing by disconnecting the connection between pin 1 of the potentiometer and the instrument.

2. The standardization test fixture for potentiometer according to claim 1, wherein, The front end of the mounting base has an insertion hole to expose the clip pin.

3. The standardization test fixture for potentiometer according to claim 1, wherein, Each of the cables is a different color, and the color of each cable corresponds to the pin number of the potentiometer and the pin number of the plug.

4. The standardization test fixture for potentiometer according to claim 1, wherein, The connector is a female plug, and the instrument is equipped with a male plug for easy connection to the female plug.

5. The standardization test fixture for potentiometer according to claim 1, wherein, Both the mounting base and the cover are made of transparent acrylic material.

Images