CN212872826U

CN212872826U - Test fixture of DC/DC power module

Info

Publication number: CN212872826U
Application number: CN202021105502.8U
Authority: CN
Inventors: 李志宏
Original assignee: Xi'an Guande Electronic Technology Co ltd
Current assignee: Xi'an Guande Electronic Technology Co ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-04-02
Anticipated expiration: 2030-06-15

Abstract

The utility model discloses a DC/DC power module's test fixture relates to power supply unit technical field, including socket and sliding seat, seted up a plurality of spouts on the socket top surface, sliding seat of equal slidable mounting in every spout, the slot has been seted up on having two conducting strip sliding seats on the spout bottom surface of sliding seat below, the slot bottom has metal connecting sheet, when metal connecting sheet removed in the spout along with the sliding seat, metal connecting sheet and a conducting strip contact, make power module's pin pass through metal connecting sheet and conducting strip and be connected with test instrument. Adopt the utility model discloses an anchor clamps, tester can need not consider the direction that power module pegged graft, no matter with what kind of mode grafting power module, can both guarantee that power module's pin and test instrument connect correctly, have greatly improved efficiency of software testing.

Description

Test fixture of DC/DC power module

Technical Field

The utility model relates to a power supply unit technical field, in particular to DC/DC power module's test fixture.

Background

Power modules are widely used in various electrical devices, and DC/DC power modules are widely used.

The power supply module can be tested before leaving the factory so as to ensure the product quality. The test method is to plug the pins of the power module into the socket device, and then to apply a load to the power module by powering on the socket device with the test instrument. Because the pins on the power module are more and the layout mode of the pins is not centrosymmetric, the direction requirement is met when the power module is plugged, otherwise, the pins of the power module cannot be normally plugged into the socket device.

However, when the tester manually plugs the power module into the socket device, the power module cannot be plugged in the correct direction every time, so that the tester needs to change the direction and then plug again, which undoubtedly increases the workload of the tester and reduces the testing efficiency.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a DC/DC power module's test fixture for solve the problem that exists among the prior art.

A test fixture for a DC/DC power supply module comprises a socket body and a plurality of sliding seats, wherein the top surface of the socket body is provided with a plurality of sliding grooves, the number of the sliding seats is the same as that of the sliding grooves, one sliding seat is slidably mounted in each sliding groove, and the sliding seats slide in the sliding grooves along the length direction of the sliding grooves;

the inner bottom surface of the sliding chute is provided with two conducting strips, the two conducting strips are positioned on the same straight line, and the straight line where the two conducting strips are positioned is parallel to the length direction of the sliding chute;

the slot has been seted up on the top surface of sliding seat, the slot includes the guide part that leaks hopper-shaped, the metal connection piece is installed to the bottom of guide part, the lower extreme of metal connection piece stretches out from the bottom surface of sliding seat, works as the metal connection piece removes to one along with the sliding seat in the spout when the top of conducting strip, the bottom of metal connection piece contacts and the electricity is connected with this conducting strip.

The embodiment of the utility model provides an embodiment of a DC/DC power module's test fixture, including socket and sliding seat, seted up a plurality of spouts on the socket top surface, equal sliding mounting sliding seat in every spout, seted up the slot on having two conducting strip sliding seats on the spout bottom surface of sliding seat below, the slot bottom has metal connecting piece, when metal connecting piece moves in the spout along with the sliding seat, metal connecting piece and a conducting strip contact, make power module's pin pass through metal connecting piece and conducting strip and be connected with test instrument. Adopt the utility model discloses an anchor clamps, tester can need not consider the direction that power module pegged graft, no matter with what kind of mode grafting power module, can both guarantee that power module's pin and test instrument connect correctly, have greatly improved efficiency of software testing.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic overall structure diagram of a test fixture for a DC/DC power module according to an embodiment of the present invention;

FIG. 2 is a schematic view of a test fixture in partial longitudinal section.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and 2, an embodiment of the present invention provides a test fixture for a DC/DC power module, the fixture includes a socket body 100 and a plurality of sliding seats 200, the socket body 100 is a cube block, a plurality of sliding grooves 110 are disposed on a top surface of the socket body, the number of the sliding grooves 110 is the same as the number of pins of the power module to be tested, the number of the sliding seats 200 is the same as the number of the sliding grooves 110, and each sliding seat 200 is slidably mounted in the sliding groove 110.

The sliding block 200 slides inside the sliding groove 110 along the longitudinal direction of the sliding groove 110, i.e., the width direction of the power module. Two conducting strips 120 are installed on the inner bottom surface of the sliding groove 110, the two conducting strips 120 are located on the same straight line, and the straight line where the two conducting strips 120 are located is parallel to the length direction of the sliding groove 110.

One end of the conductive plate 120 is located inside the sliding slot 110, and the other end of the conductive plate extends from the bottom surface of the socket body 100, so that two conductive plates 120 extend from each sliding slot 110. All the conductive sheets 120 extending from the sliding slots 110 are divided into two groups, and the two conductive sheets 120 extending from each sliding slot 110 belong to the two groups of conductive sheets respectively. The two sets of conducting strips 120 are electrically connected to a testing instrument, respectively.

In this embodiment, the two sets of conductive sheets 120 may form a cable, which is electrically connected to the testing apparatus. Specifically, the sliding grooves 110 are in a central symmetrical state on the top surface of the socket body 100, and when the number of the sliding grooves 110 is four, the sliding groove 110 at the upper left corner and the sliding groove 110 at the lower right corner form a symmetrical group, and the sliding groove 110 at the upper right corner and the sliding groove 110 at the lower left corner form a symmetrical group. At this time, the conducting strip 120 on the left side in the chute 110 at the upper left corner and the conducting strip 120 on the right side in the chute 110 at the lower right corner are electrically connected together and are connected with one wire, the conducting strip 120 on the right side in the chute 110 at the upper left corner and the conducting strip 120 on the left side in the chute 110 at the lower right corner are electrically connected together and are connected with one wire, and so on, the four formed wires form one cable.

Generally, since the sliding slots 110 are formed in the socket body 100 in a central symmetrical manner, all the conductive sheets 120 are also formed in a central symmetrical manner. When the cable is formed, the two conducting strips 120 with symmetrical two sides of the symmetrical center are connected together and connected with one conducting wire, and a plurality of conducting wires can form the cable.

The top surface of the sliding seat 200 is provided with a slot 210, the inner bottom surface of the slot 210 is provided with a metal connecting sheet 220, the upper end of the metal connecting sheet 220 is positioned on the bottom surface of the slot 210, the lower end of the metal connecting sheet extends out from the bottom surface of the sliding seat 200, the lower end of the metal connecting sheet 220 is in a horizontal state, and the length of the horizontal part is smaller than the distance between the two conducting sheets 120 in the sliding groove 110, so that when the metal connecting sheet 220 moves in the sliding groove 110 under the driving of the sliding seat 200, the metal connecting sheet 220 can be ensured to be only in contact with one conducting sheet 220, and the situation of contact with the two conducting sheets 220 at the same time can.

The height of the portion of the metal connecting plate 220 outside the sliding seat 200 is equal to the distance between the sliding seat 200 and the conductive plates 120, so that when the metal connecting plate 220 slides over one of the conductive plates 120, the metal connecting plate 220 just contacts with the conductive plate 120 and forms an electrical connection.

In this embodiment, the slot 210 is composed of two parts communicating with each other: a guide portion and an insertion portion. The guide part is a funnel-shaped groove, and the side surface of the guide part is an inclined plane or an arc surface for guiding the pins of the power supply module to the center of the bottom of the guide part. The plug-in part is located below the guide part, the diameter of the plug-in part is equivalent to that of the pin, when the pin is guided to the bottom by the guide part, the pin continues to move downwards and is inserted into the plug-in part, and after the pin is completely inserted into the plug-in part, the pin is contacted with the top end of the metal connecting sheet 220 located at the bottom of the plug-in part to form electric connection.

In order to enhance the connection stability between the metal connecting sheet 220 and the pins, the inner side surface of the guide part is provided with a metal elastic sheet, the metal elastic sheet is connected with the metal connecting sheet 220, after the pins are inserted into the inserting and connecting parts, the metal elastic sheet is extruded to generate elastic deformation, so that the pressure between the metal elastic sheet and the pins is increased, the contact area is increased, and the condition of poor contact between the pins and the metal connecting sheet 200 is prevented.

A plurality of elastic members 111 are further installed between the sliding seat 200 and the inner side wall of the sliding slot 111, and the elastic members 111 are used for providing elastic force for the sliding seat 200 to move to an initial position when being pressed by the pins to slide. In this embodiment, when the elastic member 111 is in the natural state, the sliding seat 200 is located at the middle position of the sliding slot 110.

The utility model discloses an anchor clamps are when using, and the direction that the tester need not to consider power module as long as with power module's pin downwardly inserted sliding seat 200 slot 210 can. If the contact position of the pin and the inner wall of the slot 210 is located at the position near the outer side of the slot 210 when the pin is inserted into the slot, the sliding seat 200 gradually moves outwards along with the insertion of the pin, at this time, the elastic member 111 is compressed or stretched and provides elasticity, when the pin is inserted to the bottom of the insertion part, the pin is contacted and electrically connected with the top end of the metal connecting sheet 220, at this time, the bottom end of the metal connecting sheet 220 is also contacted and electrically connected with the conducting sheet 120 at the outer side, and thus, the pin and the test instrument are connected. If the contact position of the pins with the inner wall of the slot 210 is located at the inner position of the slot 210 when the slot is inserted, the sliding seat 200 finally moves inwards in the sliding slot 110, and the pins are connected with the inner conductive sheet 120 through the metal connecting sheets 220. After the test is completed, the pins are pulled out from the slots 210, and the sliding seat 200 moves to the initial position under the elastic force of the elastic members 111 to wait for the next test operation.

While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The test fixture for the DC/DC power supply module is characterized by comprising a socket body and a plurality of sliding seats, wherein the top surface of the socket body is provided with a plurality of sliding grooves, the number of the sliding seats is the same as that of the sliding grooves, one sliding seat is arranged in each sliding groove in a sliding mode, and the sliding seats slide in the sliding grooves along the length direction of the sliding grooves;

2. The test fixture of a DC/DC power supply module of claim 1, wherein the sliding slots are centrosymmetric on the socket body, and all the conductive sheets are also centrosymmetric;

two conducting strips which are symmetrical at two sides of the symmetrical center are connected together and are connected with a conducting wire, and a plurality of conducting wires form a cable.

3. The test fixture of a DC/DC power supply module according to claim 1, wherein the lower end of the metal connecting plate is in a horizontal state, and the length of the horizontal state is smaller than the distance between two conductive plates in the sliding groove.

4. The test fixture of claim 1, wherein the metal connecting plate is located at a height outside the sliding seat corresponding to a distance between the sliding seat and the conductive plate.

5. The test fixture of claim 1, wherein the guide portion has a metal spring on an inner side thereof, and the metal spring is connected to the metal connecting plate.

6. The test fixture of a DC/DC power supply module of claim 1, wherein a plurality of elastic members are installed between the sliding seat and the inner sidewall of the sliding groove.