CN213122153U

CN213122153U - Contact detection device for power module test fixture

Info

Publication number: CN213122153U
Application number: CN202022160967.XU
Authority: CN
Inventors: 任春茂; 陈春胜; 罗辉; 王伟群; 黄广龙; 谢冬坡
Original assignee: Shenzhen Yuanlichuang Technology Co ltd
Current assignee: Shenzhen Yuanlichuang Technology Co ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-05-04
Anticipated expiration: 2030-09-28

Abstract

The utility model discloses a power module test fixture contact detection device, which comprises a base and a top seat, wherein the base and the top seat are arranged horizontally, the top seat is positioned right above the base, the base and the top seat are fixed together through a plurality of guide pillars vertically arranged on the periphery, and a test board is fixed in the middle of the top surface of the base; the middle part of the top surface of the top seat is vertically meshed with a lifting assembly. Has the advantages that: the utility model can detect the contact point of the detection component by quickly contacting the detection position of the functional module on the test board by screwing the stud to drive the movable plate to lift, the operation mode of the detection process is simple and easy to realize, and the detection efficiency of the functional module is favorably improved; the position of contact can be adjusted along the mode that the spout slided to the threaded sleeve through the determine module, then can adapt to the detection position that contacts the functional module of multiple different specifications, has promoted the use general scope of device.

Description

Contact detection device for power module test fixture

Technical Field

The utility model relates to a power module test auxiliary assembly field, concretely relates to power module test fixture contact detection device.

Background

The power module reliability test is a test for simulating the field working condition and the environmental condition of a power semiconductor module to determine the module reliability, so that the field working condition such as a certain voltage is required to be applied to a tested module for detection, the process needs to be carried out on a detection device, but the conventional detection device is extremely inconvenient to operate, seriously influences the test efficiency, has poor use universality and can only detect a single type of power module.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a power module test fixture contact detection device just in order to solve above-mentioned problem, through twisting the function module detection position on the mode that the double-screw bolt drove the fly leaf and go up and down can make the quick contact test bench of determine module's contact detect, the simple easy realization of testing process's operation, see the explanation below for details.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a power module test fixture contact detection device, including base and footstock, the base with the footstock is the level setting, and the footstock is located directly over the base, the base with the footstock between together fixed through many guide pillars that set up vertically all around, the top surface middle part of base is fixed with the testboard;

the middle part of the top surface of the top seat is vertically meshed with a lifting assembly, a movable plate is horizontally fixed at the bottom end of the lifting assembly, the movable plate is vertically matched with the guide pillar in a sliding mode, the movable plate is located right above the test board, sliding grooves are vertically formed in the two sides of the movable plate in a transverse mode, and each sliding groove is vertically matched with a detection assembly capable of sliding transversely.

Preferably, the lifting assembly comprises a stud and a locking nut, the stud is connected with the top base in a vertical meshed mode, a rotary bearing is horizontally fixed at the bottom end, extending out of the bottom surface of the top base, of the stud, a connecting sleeve is fixed on the outer side of the rotary bearing, the bottom surface of the connecting sleeve is fixedly connected with the top surface of the movable plate, and the part, extending out of the top surface of the top base, of the stud is connected with the locking nut in a meshed mode.

Preferably, a hand wheel is fixed at the top end of the stud, and anti-skid grains are formed in the surface of the hand wheel.

Preferably, the sliding groove is a waist-shaped long groove.

Preferably, the detection assembly comprises a threaded sleeve and a test electrode, the threaded sleeve is in vertical sliding fit with the sliding groove and can slide transversely along the threaded sleeve, a lantern ring is coaxially fixed to the part, extending out of the bottom end of the sliding groove, of the threaded sleeve, a compression nut is meshed with the part, extending out of the top end of the sliding groove, the test electrode is coaxially fixed to the inner side of the threaded sleeve, and a contact is fixed to the bottom end of the test electrode.

Preferably, the diameters of the collar and the compression nut are both larger than the groove width of the sliding groove.

Preferably, the contact is made of pure copper, and the contact is of an inverted truncated cone-shaped structure.

When the contact detection device for the power module test fixture is used, a power module is placed on the top surface of the test bench, the test positions face upwards, a connecting line between the test positions is transversely arranged below the detection assembly, the compression nut is screwed upwards to leave the top surface of the movable plate, then the contact is adjusted to be vertically opposite to the test positions in a mode that the threaded sleeve transversely moves along the sliding chute, then the threaded sleeve is locked to be incapable of rotating in a mode that the compression nut is screwed downwards to be tightly pressed against the top surface of the movable plate, then the contact is locked to be vertically opposite to the test positions, the other contact is also adjusted to be vertically opposite to the other test positions and locked according to the mode, the test electrodes are electrified in a mode of being electrically connected with external cables, and the locking nut is screwed upwards to be close to the hand wheel, then the hand wheel is screwed to drive the stud to rotate forwards, the stud drives the movable plate to descend in the process of rotating forwards, the contact descends immediately, the stud stops being screwed after the contact descends to the test position which is in contact with and pressed on the power module, then the stud can be locked to be incapable of rotating by screwing the locking nut to the top surface of the top seat, so that the state that the contact is in contact with and pressed on the test position of the power module is locked, then the test electrode can provide voltage and other working conditions for the power module to detect, the locking nut is screwed again to release the locking of the stud after the detection is finished, then the stud is screwed to rotate backwards to drive the movable plate to ascend, the stud stops after the contact ascends to leave the power module for a certain distance, and then the tested power module can be taken down to continue to replace other power modules for testing, the operating mode of testing process is simple easily to be realized, is favorable to promoting the detection efficiency to functional module, simultaneously through determine module the threaded sleeve follows the mode that the spout slided can be adjusted the position of contact on transversely, then can adapt to the detection position that contacts the functional module of multiple different specifications, promoted the use general range of device.

Has the advantages that: 1. the utility model can detect the contact point of the detection component by quickly contacting the detection position of the functional module on the test board by screwing the stud to drive the movable plate to lift, the operation mode of the detection process is simple and easy to realize, and the detection efficiency of the functional module is favorably improved;

2. the position of contact can be adjusted along the mode that the spout slided to the threaded sleeve through the determine module, then can adapt to the detection position that contacts the functional module of multiple different specifications, has promoted the use general scope of device.

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 front external view of the present invention;

figure 2 is a front cross-sectional view of the present invention from figure 1;

figure 3 is a top external view of figure 1 of the present invention;

fig. 4 is a top cross-sectional view of fig. 1 according to the present invention.

The reference numerals are explained below:

1. a top seat; 2. a movable plate; 201. a chute; 3. a guide post; 4. a test bench; 5. a base; 6. a lifting assembly; 601. a hand wheel; 602. locking the nut; 603. a stud; 604. connecting sleeves; 605. a slew bearing; 7. a detection component; 701. a test electrode; 702. a compression nut; 703. a threaded bushing; 704. a collar; 705. and (4) a contact.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the utility model provides a power module test fixture contact detection device, including base 5 and footstock 1, base 5 and footstock 1 are the level setting all, and footstock 1 is located base 5 directly over, and many guide pillars 3 through vertical setting around between base 5 and the footstock 1 are together fixed, and the top surface middle part of base 5 is fixed with testboard 4. The vertical meshing in top surface middle part of footstock 1 is connected with lifting unit 6, and lifting unit 6's bottom level is fixed with fly leaf 2, and fly leaf 2 and the equal vertical sliding fit of guide pillar 3, and fly leaf 2 is located testboard 4 directly over, and horizontal vertical spout 201 of having seted up is all followed to the both sides of fly leaf 2, and the equal vertical sliding fit of every spout 201 has the determine module 7 that can transversely slide.

As a preferable scheme of the scheme, the lifting assembly 6 comprises a stud 603 and a lock nut 602, the stud 603 is vertically engaged with the top base 1, a rotary bearing 605 is horizontally fixed at the bottom end of the stud 603 extending out of the bottom surface of the top base 1, a connecting sleeve 604 is fixed on the outer side of the rotary bearing 605, preferably, the connecting sleeve 604 is made of insulating material, the bottom surface of the connecting sleeve 604 is fixedly connected with the top surface of the movable plate 2, the part of the stud 603 extending out of the top surface of the top seat 1 is engaged and connected with a locking nut 602, with the arrangement, the contact 705 is driven to rapidly descend by screwing the stud 603 so as to contact the detection position for testing, and the detection position is rapidly locked by screwing the locking nut 602 to the surface of the top seat 1, the top end of the stud 603 is fixed with the hand wheel 601, and the surface of the hand wheel 601 is provided with anti-slip lines, so that the stud 603 can be conveniently rotated in a manner of holding the hand wheel 601 to apply force, and the hand wheel 601 is prevented from being released in the process of rotating the hand wheel 601.

The spout 201 is waist type elongated slot, so set up, be convenient for spout 201 self can be by good quick processing and have comparatively wide adjustment range on horizontal, determine module 7 includes threaded sleeve 703 and test electrode 701, threaded sleeve 703 and the vertical sliding fit of spout 201 and can transversely slide along threaded sleeve 703, threaded sleeve 703 stretches out the coaxial lantern ring 704 that is fixed with of part of spout 201 bottom, the part meshing that spout 201 stretches out the spout 201 top is connected with gland nut 702, threaded sleeve 703 inboard coaxial fixed with test electrode 701, the bottom mounting of test electrode 701 has contact 705, so set up, be convenient for carry out the test of operating condition such as voltage fast along with the mode contact power module's that movable plate 2 descends detection position through contact 705.

The diameters of the lantern ring 704 and the gland nut 702 are all greater than the groove width of the sliding groove 201, so that the gland nut 702 is screwed down to the surface of the movable plate 2, the threaded sleeve 703 can not slide along the sliding groove 201 in a locking mode, the contact 705 is made of pure copper, the contact 705 is an inverted round table-shaped structure, and the contact 705 is arranged so that the contact 705 can be conveniently contacted with a test position, and the contact has a good use effect and the bottom end can be more attached to the test position.

By adopting the structure, when in use, the power module is placed on the top surface of the test bench 4, the test positions face upwards, the connecting line between the test positions is transversely arranged below the detection component 7, the upper screwing compression nut 702 leaves the top surface of the movable plate 2, then the contact 705 is adjusted to be vertically opposite to the test positions in a mode of transversely moving the threaded sleeve 703 along the sliding groove 201, then the threaded sleeve 703 is locked to be incapable of rotating in a mode of tightly propping the lower screwing compression nut 702 on the top surface of the movable plate 2, then the contact 705 is locked to be vertically opposite to the test positions, the other contact 705 is also adjusted to be vertically opposite to the other test positions and locked in the mode, the test electrodes 701 are electrified in a mode of being electrically connected with external cables, the upper screwing locking nut 602 rises to be close to the hand wheel 601, then the hand wheel 601 is screwed to drive the stud 603, and the stud 603 drives the movable plate 2 to descend, the contact 705 descends immediately, when the contact 705 descends to a test position which is contacted and pressed on the power module, the stud 603 is stopped being screwed, then the stud 603 can be locked and cannot rotate in a mode of screwing the locking nut 602 to the top surface of the top seat 1, so that the locking contact 705 is contacted and pressed on the test position of the power module, then the power module can be detected by providing working conditions such as voltage and the like through the test electrode 701, after the detection is finished, the locking nut 602 is screwed up again to release the locking of the stud 603, then the stud 603 is screwed and reversed to drive the movable plate 2 to ascend, when the contact 705 ascends and leaves the power module for a certain distance, the contact 705 can be stopped, then the power module which is tested can be taken down to continue to replace other power modules for testing, the operation mode of the detection process is simple and easy to realize, the detection efficiency of the function modules is improved, and meanwhile, the contact 705 can be adjusted in a transverse direction in a mode of sliding along the The detection device can be adapted to the detection positions of the functional modules contacting various different specifications, and the general use range of the device is widened.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a power module test fixture contact detection device, includes base (5) and footstock (1), its characterized in that: the base (5) and the top seat (1) are both horizontally arranged, the top seat (1) is positioned right above the base (5), the base (5) and the top seat (1) are fixed together through a plurality of guide columns (3) vertically arranged on the periphery, and a test bench (4) is fixed in the middle of the top surface of the base (5);

the top surface middle part vertical meshing of footstock (1) is connected with lifting unit (6), the bottom level of lifting unit (6) is fixed with fly leaf (2), fly leaf (2) with the equal vertical sliding fit of guide pillar (3), just fly leaf (2) are located directly over testboard (4), horizontal vertical spout (201) have been seted up along all to the both sides of fly leaf (2), and every equal vertical sliding fit of spout (201) has detection component (7) that can transversely slide.

2. The power module test fixture contact detection apparatus of claim 1, wherein: lifting unit (6) include double-screw bolt (603) and lock nut (602), double-screw bolt (603) with the vertical meshing of footstock (1) is connected, double-screw bolt (603) stretch out the bottom level of footstock (1) bottom surface is fixed with slewing bearing (605), slewing bearing's (605) outside is fixed with adapter sleeve (604), just the bottom surface of adapter sleeve (604) with fly leaf (2) top surface fixed connection, double-screw bolt (603) stretch out the partial meshing of footstock (1) top surface is connected with lock nut (602).

3. The power module test fixture contact detection apparatus of claim 2, wherein: a hand wheel (601) is fixed at the top end of the stud (603), and anti-skid grains are formed in the surface of the hand wheel (601).

4. The power module test fixture contact detection apparatus of claim 2 or 3, wherein: the sliding groove (201) is a waist-shaped long groove.

5. The power module test fixture contact detection apparatus of claim 4, wherein: the detection assembly (7) comprises a threaded sleeve (703) and a test electrode (701), the threaded sleeve (703) is in vertical sliding fit with the sliding groove (201) and can slide transversely along the threaded sleeve (703), a lantern ring (704) is coaxially fixed to the part, extending out of the bottom end of the sliding groove (201), of the sliding groove (201) is connected with a compression nut (702) in a meshed mode, the test electrode (701) is coaxially fixed to the inner side of the threaded sleeve (703), and a contact (705) is fixed to the bottom end of the test electrode (701).

6. The power module test fixture contact detection apparatus of claim 5, wherein: the diameters of the collar (704) and the compression nut (702) are both larger than the groove width of the sliding groove (201).

7. The power module test fixture contact detection apparatus of claim 6, wherein: the contact (705) is made of pure copper, and the contact (705) is of an inverted truncated cone-shaped structure.