CN210037874U

CN210037874U - PCB testing jig

Info

Publication number: CN210037874U
Application number: CN201920153815.1U
Authority: CN
Inventors: 浦佳; 项芳; 乔洁
Original assignee: Wuhan Jingyitong Electronic Technology Co Ltd
Current assignee: Wuhan Jingyitong Electronic Technology Co Ltd
Priority date: 2019-01-29
Filing date: 2019-01-29
Publication date: 2020-02-07
Anticipated expiration: 2029-01-29

Abstract

The utility model discloses a PCB board test fixture, including the base, the displacement actuating mechanism who is connected with the unsteady location support plate that is used for placing PCB and is used for driving unsteady location support plate to reciprocate floats on the base, and the rigid coupling has the probe module that is used for the contact to switch on PCB on the base, and displacement actuating mechanism's expansion end is connected with the fore-set that is used for the contact to push down PCB, and the probe module is located and unsteady location support plate below, and the fore-set is located unsteady location support plate top. The utility model is not only simple in structure, convenient to use, the accurate counterpoint crimping that can guarantee PCB board and probe moreover effectively can avoid the crimping to switch on in-process pressure overload simultaneously and cause the damage to PCB board or probe.

Description

PCB testing jig

Technical Field

The utility model relates to a test fixture belongs to PCB board check out test set technical field, concretely relates to PCB board test fixture.

Background

PCBs, which are also called printed circuit boards, also called printed circuit boards and printed wiring boards, are not only important electronic components but also support bodies for electronic components and providers of electrical connections between electronic components. The quality of the PCB directly affects the performance and the service life of the electronic components, so a series of performance tests need to be performed on the PCB after the PCB is manufactured, and one of the series of performance tests is particularly important: namely, the conductivity of each signal contact of the PCB is tested. At present, all adopt the formula of pushing down design (PCB is fixed, the probe pushes down) to the conductivity test equipment of each signal contact of PCB board, utilize actuating mechanism to drive the probe and push down the test, as chinese utility model patent CN206460141U, CN206594269U and CN207817022U show, the problem that above-mentioned technical scheme exists is that formula structural pressure is wayward pushes down, can cause the damage to PCB board or probe when the crimping switches on in-process pressure overload.

In order to solve the technical problems in the technical solutions, the specification of chinese patent CN103412165A discloses a test fixture for testing pin point conduction of a PCB board of a mobile phone, which includes a test board, a support plate, a top seat, a cylinder, a positioning support plate, a moving plate, an insertion plate and probes, wherein the support plate is arranged at the rear side of the test board, the top seat above the test board is connected to the front end of the support plate, the positioning support plate for placing the PCB board is arranged at the bottom of the front end of the top seat, the cylinder is arranged at the bottom of the rear end of the top seat, a cylinder rod of the cylinder is connected to the moving plate which is transversely arranged, the insertion plate is arranged at the top of the moving plate, and the probes are arranged in the insertion plate. According to the invention, the PCB or the probe is effectively prevented from being crushed by adopting the technical scheme of PCB fixation and probe lifting type design, but because the position-limiting mechanism is not arranged above the PCB, when the probe is lifted up to contact and jack up the PCB, the PCB can be moved, so that the probe is dislocated with a signal contact on the PCB, and the false detection is caused.

Disclosure of Invention

An object of the utility model is to provide a PCB board test fixture, it is simple structure, convenient to use not only, can guarantee the accurate counterpoint crimping of PCB board and probe effectively moreover and can avoid crimping to switch on in-process pressure overload and cause the damage to PCB board or probe simultaneously.

For solving the technical problem, the utility model discloses a such PCB board test fixture, it includes the base, it is connected with the displacement actuating mechanism that the location support plate floated and was used for driving to float that is used for placing PCB on the base and float the location support plate and reciprocate to float, the rigid coupling has the probe module that is used for the contact to switch on PCB on the base, displacement actuating mechanism's expansion end is connected with the fore-set that is used for the contact to push down PCB, the probe module be located with the location support plate below floats, the fore-set is located the location support plate top floats.

In a preferred embodiment of the present invention, the base is fixedly connected with a travel switch for controlling the on/off of the PCB.

The utility model discloses an in the preferred embodiment, the rigid coupling has rather than the first guide pillar of arranging perpendicularly on the base, sliding fit is connected with the location support plate that floats that is used for placing PCB on the first guide pillar, the location support plate that floats with be provided with reset spring between the guide pillar.

The utility model discloses an in a preferred embodiment, displacement actuating mechanism includes that second guide pillar, sliding fit on the base of perpendicular rigid coupling install the unsteady clamp plate on the second guide pillar and connect in the sharp actuating mechanism of unsteady clamp plate upper end, the lower extreme rigid coupling of unsteady clamp plate has the fore-set.

In a preferred embodiment of the present invention, the linear driving mechanism includes an elbow clamp, an elbow clamp limiting post and a third guide post which are connected in sequence from top to bottom.

In a preferred embodiment of the present invention, the linear driving mechanism is connected to the base through a bracket.

The utility model discloses an in a preferred embodiment, the location support plate floats includes the support plate body, be provided with the recess that is used for fixing a position PCB on the support plate body, be provided with the hole of dodging the probe module on the support plate body.

The utility model discloses an in an preferred embodiment, the fore-set is made for the silica gel material, the fore-set moves down through pushing down PCB drive location support plate that floats.

In a preferred embodiment of the present invention, the probe module includes a probe mounting plate and a probe.

In a preferred embodiment of the present invention, the number and the arrangement position of the probes correspond to the number and the arrangement position of the signal contacts on the PCB to be tested.

The utility model has the advantages that: the utility model has simple structure and convenient use, and not only ensures that the PCB or the probe is not damaged in the crimping and conducting process, but also effectively ensures the accurate alignment and crimping of the PCB and the probe by arranging the fixed probe module below the floating positioning support plate and arranging the movable support pillar above the floating positioning support plate; furthermore, the utility model ensures that the pressure is not overloaded in the process of crimping and connecting by arranging the travel switch for controlling the on/off of the PCB on the base; furthermore, the utility model discloses a connection scheme of a floating positioning support plate, which facilitates the installation of the floating positioning support plate by arranging a guide pillar and a return spring on a base; furthermore, the utility model discloses a manual displacement driving mechanism technical scheme, which has simple structure and convenient assembly; further, the utility model discloses a jack-prop when having avoided the crimping to switch on the process that selects for use the jack-prop that the silica gel material made to strike PCB.

Drawings

Fig. 1 is a schematic view of a PCB testing jig according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a PCB testing jig according to an embodiment of the present invention;

in the figure: 1-a base; 2-a probe module; 3-floating the positioning carrier plate; 4-a displacement drive mechanism; 5-a top pillar; 6-a travel switch; 7-a scaffold; 8-a return spring; 2.1-mounting plate; 2.2-Probe; 4.1-a second guide post; 4.2-floating press plate; 4.3-elbow clip; 4.4-elbow clip limiting column; 4.5-third guide pillar.

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 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.

As can be seen from the attached drawings of the specification of the invention, the utility model discloses a PCB testing jig, which comprises a base 1 and a bracket 7 arranged on the base 1, wherein the bracket 7 is arranged vertically to the base 1, a first guide pillar vertically arranged to the base 1 is fixedly connected with the base 1, a floating positioning support plate 3 for placing a PCB is connected on the first guide pillar in a sliding fit manner, a reset spring 8 is arranged between the floating positioning support plate 3 and the first guide pillar, the upper end of the first guide pillar is provided with a structure for limiting the floating positioning support plate 3, the floating positioning support plate 3 can move up and down along the first guide pillar, the reset spring 8 is compressed when the floating positioning support plate 3 moves down, a displacement driving mechanism 4 for driving the floating positioning support plate 3 to move up and down is arranged on the bracket 7, the displacement driving mechanism 4 comprises a second guide pillar 4.1 vertically fixedly connected on the base 1, a floating press plate 4.2 arranged on the second guide pillar 4.1 in a sliding fit manner and a linear, the lower end of the floating pressure plate 4.2 is fixedly connected with a top column 5; the linear driving mechanism comprises an elbow clamp 4.3, an elbow clamp limiting column 4.4 and a third guide pillar 4.5 which are sequentially connected from top to bottom, the utility model discloses an invention point lies in that the floating positioning support plate 3 can drive the PCB to move down to contact the probe module 2, and simultaneously, the jacking pillar 5 is utilized to ensure that the PCB is positioned at the position of the floating positioning support plate 3 so as to avoid the displacement of the floating positioning support plate 3 caused when the probe module 2 contacts the floating positioning support plate 3.

Therefore, the utility model discloses a rigid coupling has the probe module 2 that is used for the contact to switch on PCB on base 1, the expansion end of displacement actuating mechanism 4 is connected with the fore-set 5 that is used for the contact to push down PCB, probe module 2 is located with 3 below the floating location support plates, the fore-set 5 is located 3 above the floating location support plates, the floating location support plates 3 include the support plate body, be provided with the recess that is used for fixing a position PCB on the support plate body, be provided with the hole of dodging probe module 2 on the support plate body, probe module 2 includes probe mounting panel 2.1 and probe 2.2, probe mounting panel 2.1 is connected with base 1 detachably; the number and the arrangement positions of the probes 2.2 correspond to the number and the arrangement positions of the signal contacts on the PCB to be tested, the number and the arrangement positions of the holes on the carrier plate body correspond to the number and the arrangement positions of the probes 2.2, and the probes 2.2 can adopt telescopic probes.

Preferably, a travel switch 6 for controlling the on/off of the PCB is fixedly connected to the base 1.

Preferably, the top pillar 5 is made of a silica gel material, and the top pillar 5 drives the floating positioning carrier plate 3 to move downwards by pressing the PCB downwards.

Use the utility model discloses the time, operating personnel puts into unsteady location support plate 3 with PCB at first, then rotatory elbow presss from both sides 4.3 and drives the elbow and press from both sides spacing post 4.4, guide pillar 4.5 and unsteady clamp plate 4.2 and move down, 5 contact PCBs of fore-set of unsteady clamp plate 4.2 lower extreme, continue rotatory elbow and press from both sides 4.3, fore-set 5 drives unsteady location support plate 3 through PCB and moves down one until PCB and probe 2.2 contact, at this moment, 6 contact switch-on of travel switch begin to detect PCB, it drives elbow and presss from both sides spacing post 4.4 to detect the back operating personnel reverse rotation elbow that finishes, guide pillar 4.5 and unsteady clamp plate 4.2 move up, unsteady location support plate 3 moves to the guide pillar 4 highest point under reset spring 8 effects.

It should be noted that the displacement driving mechanism indicated in the present invention is not limited to the above technical solution, and may also adopt the technical solutions in CN206460141U, CN206594269U, CN207817022U and CN103412165A, and the functions thereof only need to be able to drive the floating positioning carrier plate 3 to move up and down.

The utility model discloses the unsteady location support plate that points out is not limited to above-mentioned technical scheme, and it also can be technical scheme in CN206460141U, CN206594269U, CN207817022U and CN103412165A, and its function as long as can realize the location of PCB can.

The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. The utility model provides a PCB board test fixture, includes base (1), floating connection has the displacement actuating mechanism (4) that is used for placing PCB's unsteady location support plate (3) and is used for drive unsteady location support plate (3) to reciprocate on base (1), its characterized in that: the solid coupling has probe module (2) that is used for the contact to switch on PCB on base (1), the expansion end of displacement actuating mechanism (4) is connected with and is used for the contact to push down top post (5) of PCB, probe module (2) be located with unsteady location support plate (3) below, top post (5) are located unsteady location support plate (3) top.

2. The PCB testing jig of claim 1, wherein: and a travel switch (6) for controlling the on/off of the PCB is fixedly connected to the base (1).

3. The PCB testing jig of claim 1, wherein: the PCB positioning device is characterized in that a first guide pillar which is perpendicular to the base (1) is fixedly connected to the base (1), a floating positioning support plate (3) used for placing a PCB is connected to the first guide pillar in a sliding fit mode, and a reset spring (8) is arranged between the floating positioning support plate (3) and the guide pillar.

4. The PCB testing jig of claim 1, wherein: the displacement driving mechanism (4) comprises a second guide pillar (4.1) vertically and fixedly connected to the base (1), a floating pressing plate (4.2) installed on the second guide pillar (4.1) in a sliding fit mode and a linear driving mechanism connected to the upper end of the floating pressing plate (4.2), and the lower end of the floating pressing plate (4.2) is fixedly connected with the ejection pillar (5).

5. The PCB testing jig of claim 4, wherein: the linear driving mechanism comprises an elbow clamp (4.3), an elbow clamp limiting column (4.4) and a third guide column (4.5) which are sequentially connected from top to bottom.

6. The PCB testing jig of claim 4, wherein: the linear driving mechanism is connected with the base (1) through a support (7).

7. The PCB testing jig of claim 1, wherein: the floating positioning carrier plate (3) comprises a carrier plate body, a groove used for positioning the PCB is formed in the carrier plate body, and a hole for avoiding the probe module (2) is formed in the carrier plate body.

8. The PCB testing jig of claim 1, wherein: the top pillar (5) is made of silica gel, and the top pillar (5) drives the floating positioning support plate (3) to move downwards by pressing down the PCB.

9. The PCB testing jig of claim 1, wherein: the probe module (2) comprises a probe mounting plate (2.1) and a probe (2.2).

10. The PCB testing jig of claim 9, wherein: the number and the arrangement positions of the probes (2.2) correspond to the number and the arrangement positions of the signal contacts on the PCB to be tested.