CN210376597U

CN210376597U - Pressing mechanism

Info

Publication number: CN210376597U
Application number: CN201920911656.7U
Authority: CN
Inventors: 黄招东; 陈大添
Original assignee: Fujian Jieyu Computer Technology Co ltd
Current assignee: Fujian Jieyu Computer Technology Co ltd
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2020-04-21
Anticipated expiration: 2029-06-17

Abstract

The utility model relates to the technical field of PCB performance test, in particular to a pressing mechanism, which comprises a base, a supporting frame, a pressing rod, an upper fixing plate, a lower fixing plate, an elastic positioning column, a thimble and a tray; directly over the recess that is located the tray through the upper fixed plate, set up the common centre gripping PCB board of the apical post and the tray that evenly just set up more than two of upper fixed plate's lower surface, and the thimble stretches into the ladder inslot and the test point electrical contact on thimble tip and the PCB board from the through-hole that corresponds when the vertical elastic positioning post that compresses down of tray, a plurality of thimbles are connected with the test point electricity on the PCB board simultaneously, realize that the multiport inserts test data simultaneously, easy operation, efficiency of software testing is high. Simultaneously, the more than two even and perpendicular top posts can make the tray level push down, and the thimble is buckled or is damaged and influence the test effect when avoiding inclining.

Description

Pressing mechanism

Technical Field

The utility model relates to a PCB board capability test technical field especially relates to a push down mechanism.

Background

In order to realize one or more functions on the existing PCB, a plurality of chips or modules are generally integrated, and the chips or modules need to be cooperatively matched, which means that multi-port data input is required to be simultaneously performed in the actual test process, however, the multi-port data input is usually required to be butted one by one, the operation is complex, and the test efficiency is low. In addition, in the operation process, in order to facilitate the docking, a mode of electrically contacting the thimble with the test point on the PCB is usually used, but if the thimble is abnormally used, the thimble is easily bent or damaged to affect the test effect.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to solve the technical problem that a push-down mechanism is provided, which can effectively avoid the thimble to bend or damage and influence the test effect.

In order to solve the technical problem, the utility model discloses a technical scheme be:

a pressing mechanism comprises a base, a supporting frame, a pressing rod, an upper fixing plate, a lower fixing plate, an elastic positioning column, a thimble and a tray;

the upper surface of the base is fixedly provided with a lower fixing plate, the tray is arranged on the upper surface of the lower fixing plate through an elastic positioning column perpendicular to the lower fixing plate, the upper surface of the tray is provided with a groove, the groove is matched with the outline of the PCB, the bottom of the groove is provided with more than two through holes, the through holes are arranged opposite to test points on the PCB, and a notch is arranged on one side wall of the groove; the ejector pins are fixed on the lower fixing plate and are arranged in one-to-one correspondence with the through holes, when the elastic positioning columns are vertically and downwards compressed by the tray, the ejector pins extend into the grooves from the corresponding through holes, and the end parts of the ejector pins are in electric contact with the test points on the PCB;

the support frame sets up perpendicularly on the base upper surface and is located bottom plate one side, the gliding setting of perpendicular base upper surface direction can be followed to the lower depression bar upper end on the support frame, depression bar lower extreme and upper fixed plate fixed connection down, the upper fixed plate is located directly over the recess of tray, the lower surface of upper fixed plate is equipped with the fore-set that evenly just sets up perpendicularly more than two, during depression bar downstream the fore-set bottom contacts with PCB board up end and with the common centre gripping PCB board of tray.

Furthermore, the number of the top posts is five, the upper fixing plate is rectangular, four top posts are arranged corresponding to four rectangular vertex angles, and the rest top posts are arranged corresponding to the central positions of the rectangles.

Furthermore, an insulating layer is arranged at the bottom end of the top column, and the thickness of the insulating layer is 1-3 mm.

Furthermore, the groove depth of the groove is matched with the thickness of the PCB.

Furthermore, the ejector pin is an elastic metal ejector pin.

Further, the base is internally hollow, a connecting wire is arranged inside the base, more than two data ports are embedded in the side wall of the base, one end of the connecting wire is electrically connected with the bottom end of the ejector pin, and the other end of the connecting wire is electrically connected with the data ports.

Further, the data port is a USB interface; the number of the data ports is eight.

The beneficial effects of the utility model reside in that:

the utility model provides a mechanism pushes down is located the recess of tray directly over through the upper fixed plate, sets up the common centre gripping PCB board of fore-set and tray that evenly just perpendicular set up more than two of the lower surface of upper fixed plate, and during the vertical downward compression elastic positioning post of tray, the thimble stretches into the ladder inslot and the test point electrical contact on thimble tip and the PCB board from the through-hole that corresponds, and a plurality of thimbles are connected with the test point electricity on the PCB board simultaneously, realize that the multiport inserts test data simultaneously, easy operation, efficiency of software testing is high. Simultaneously, the more than two even and perpendicular top posts can make the tray level push down, and the thimble is buckled or is damaged and influence the test effect when avoiding inclining.

Drawings

Fig. 1 is a schematic structural view of a pressing mechanism of the present invention;

fig. 2 is a partial schematic view of the pressing mechanism of the present invention;

FIG. 3 is a front view of FIG. 2;

description of reference numerals:

1. a base; 11. a data port;

2. a support frame; 21. a vertical plate; 22. a transverse plate;

3. a lower pressure lever;

4. an upper fixing plate; 41. a top pillar;

5. a lower fixing plate;

6. an elastic positioning column;

7. a thimble;

8. a tray; 81. a groove; 811. a through hole; 812. and (4) a notch.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1 to 3, a pressing mechanism of the present invention includes a base, a supporting frame, a pressing rod, an upper fixing plate, a lower fixing plate, an elastic positioning column, a thimble and a tray;

From the above description, the beneficial effects of the present invention are:

As apparent from the above description, the tray can be horizontally pressed down by the above structure.

As can be seen from the above description, the above structure can serve as an insulation to prevent electrical contact with the contacts on the PCB.

As can be seen from the above description, the groove depth of the groove is equal to the thickness of the PCB, and the PCB can be conveniently taken out through the notch on one side wall of the groove after being placed in the groove.

Furthermore, the ejector pin is an elastic metal ejector pin.

From the above description, it can be known that each thimble is independent, and the height of the thimble can be adjusted in a self-adaptive manner when welding points on test points on a PCB are inconsistent (mainly caused by manual welding) by using the elastic metal thimble, and the thimble has upward elastic force after being pressed down, so that the end of the thimble can be ensured to be in electrical contact with the test points on the PCB no matter how high the thimble is.

According to the above description, the eight data ports can be simultaneously butted by the structure, and a contact type electric connection mode is adopted, so that the operation is convenient and quick.

Referring to fig. 1 to fig. 3, a first embodiment of the present invention is:

the utility model relates to a pressing mechanism, which comprises a base 1, a supporting frame 2, a pressing rod 3, an upper fixing plate 4, a lower fixing plate 5, an elastic positioning column 6, a thimble 7 and a tray 8;

the base 1 is in a cuboid shape, the interior of the base 1 is of a hollow structure, a plurality of connecting wires are arranged in the base 1, more than two data ports 11 are embedded in the side wall of the base 1, in the scheme, the PCB is specifically a HUB (head-up display) board, the data ports 11 are USB (universal serial bus) interfaces, the number of the data ports 11 is eight, and actually only seven ports are required to be simultaneously butted; one end of the connecting wire is electrically connected with the bottom end of the thimble, and the other end of the connecting wire is electrically connected with the data port. The base is provided with a power interface on the rear side wall and a plurality of switch devices on the upper surface.

Fixed surface installs bottom plate 5 on the base 1, bottom plate 5 is the cuboid platelike, adopts transparent ya keli material, and the base 1 upper surface is equipped with the opening, and bottom plate lid is established at the opening part and is sealed this opening, can direct observation to the base internal wiring condition and install the thimble condition on the bottom plate.

Tray 8 installs through perpendicular to bottom plate's elastic locating column 6 the upper surface of bottom plate 5, tray 8's sectional area is less than or equal to bottom plate's sectional area, and also is cuboid platelike and transparent ya keli material, tray 8 upper surface is equipped with recess 81, the profile looks adaptation of recess 81 and PCB board, the groove depth and the thickness looks adaptation of PCB board of recess 81, the tank bottom of recess 81 is equipped with through-hole 811 more than two, the test point on through-hole 811 and the PCB board sets up relatively, be equipped with breach 812 on the wall of recess 81, the PCB board is convenient for take out the PCB board in putting into the recess on the breach of back accessible recess lateral wall.

It should be noted that the test points on the PCB are distributed in a dense area and a scattered area, where the dense area is a dense area where a plurality of test points are closely distributed, for example, the distance between adjacent test points is less than 2-3mm, but not in contact.

The thimble 7 is fixed in on the bottom plate and with through-hole 811 one-to-one sets up, thimble 7 is perpendicular to the upper surface of bottom plate, many thimbles 7 parallel arrangement each other, thimble 7 is the elastic metal thimble. Each thimble is independent, adopts the height that the height of elasticity metal thimble can realize the self-adaptation when the solder joint on the test point on the PCB board is inconsistent (mainly caused by manual welding), because all have ascending elasticity after pushing down, so can guarantee the test point electrical contact on thimble tip and the PCB board no matter how high the thimble. The thimble 7 is arranged such that when the tray 8 vertically compresses the elastic positioning column 6 downwards, the thimble 7 extends into the groove 81 from the corresponding through hole 811 and the end of the thimble 7 is electrically contacted with a test point on the PCB.

Support frame 2 sets up perpendicularly at 1 upper surface of base and is located 5 one sides of bottom plate, support frame 2 comprises the diaphragm 22 that two risers 21 that are parallel to each other and a level set up, and two risers 21 set up perpendicularly at 1 upper surface of base, the both ends of diaphragm 22 respectively with the top fixed connection of two risers 21, 3 upper ends of depression bar can be followed perpendicular base upper surface direction gliding setting on the diaphragm 22 of support frame down, 3 lower extremes of depression bar and upper fixed plate 4 fixed connection down, upper fixed plate 4 is located directly over the recess of tray, the lower surface of upper fixed plate 4 is equipped with the fore-set 41 of even and perpendicular setting more than two, during 3 downstream of depression bar the fore-set 41 bottom and PCB board up end contact and with the common centre gripping PCB board of tray 8. The quantity of fore-set 41 is five, upper fixed plate 4 is rectangle, four the fore-set corresponds four apex angle positions of rectangle and sets up, and remaining one the fore-set corresponds rectangle central point and puts the setting. The tray can be horizontally pressed down through the structure. The bottom end of the top column is provided with an insulating layer, and the thickness of the insulating layer is 1-3 mm. The structure can play an insulating role and avoid the contact on the PCB board from generating electric contact.

The use process of the pressing mechanism is as follows: the data line mouth on the right side behind HUB board test fixture links to each other with A is public + B supplies the data line with public, and the power mouth inserts 5V2A power, inserts 7 equipment (the test only needs 7) of having pasted the identification number in the socket under the front end, opens the computer test and looks over the gadget. Will lift on hand for making the depression bar move up, let out the tray, put into the ladder inslot of tray with the HUB board, push down the handle, the thimble come-up withstands each port solder joint of HUB circular telegram, look over and have discerned several equipment on the test gadget, it is good to have discerned to become green explanation port, shows that red explanation port is bad or unable discernment to realize the HUB board and test.

To sum up, the utility model provides a pair of push-down mechanism is located the recess of tray through the upper fixed plate directly over, sets up the even and perpendicular fore-set that sets up of more than two of upper fixed plate's lower surface and the common centre gripping PCB board of tray, and during the vertical downward compression elastically positioned post of tray, the thimble stretches into the ladder inslot and the test point electrical contact on tip and the PCB board from the through-hole that corresponds, and a plurality of thimbles are connected with the test point electricity on the PCB board simultaneously, realize that the multiport inserts test data simultaneously, easy operation, and efficiency of software testing is high. Simultaneously, the more than two even and perpendicular top posts can make the tray level push down, and the thimble is buckled or is damaged and influence the test effect when avoiding inclining.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. A pressing mechanism is characterized by comprising a base, a supporting frame, a pressing rod, an upper fixing plate, a lower fixing plate, an elastic positioning column, a thimble and a tray;

2. The pressing mechanism as claimed in claim 1, wherein the number of the top pillars is five, the upper fixing plate is rectangular, four top pillars are arranged corresponding to four vertex angles of the rectangle, and the remaining top pillar is arranged corresponding to the center of the rectangle.

3. The hold-down mechanism according to claim 1, wherein the bottom end of the top pillar is provided with an insulating layer, and the thickness of the insulating layer is 1-3 mm.

4. The hold-down mechanism of claim 1, wherein the groove depth of the groove is adapted to the thickness of the PCB.

5. The hold-down mechanism of claim 1, wherein the ejector pin is a resilient metal ejector pin.

6. The pressing mechanism as claimed in claim 1, wherein the base has a hollow structure inside, the base has a connecting wire inside, the sidewall of the base has two or more data ports embedded therein, one end of the connecting wire is electrically connected to the bottom end of the thimble, and the other end of the connecting wire is electrically connected to the data ports.

7. The hold-down mechanism of claim 6, wherein the data port is a USB interface; the number of the data ports is eight.