CN209784413U - device is reformed transform to keypad test needle - Google Patents

Abstract

The utility model discloses a keyboard testing needle transformation device, which comprises an upper mould component, a testing needle, a needle sleeve, a spring and a lower mould component, wherein a plurality of groups of the testing needle are arranged inside a plurality of groups of needle sleeves, the testing needle is movably connected with the upper mould component, one end of the spring is respectively arranged at the tail part of the testing needle, a plurality of groups of the spring are respectively arranged inside the needle sleeves, a plurality of groups of the needle sleeves are respectively arranged on the upper mould component, the lower mould component is arranged below the upper mould component, an upper pressure plate is arranged below a second layer plate, four groups of upper guide posts are arranged between the upper connecting plate and the upper pressure plate, the contact area of the testing needle is increased, the pressure of the lower pressure spring is reduced, the purpose that the contact pressure of the testing needle and a key position is reduced, the non-pressing is achieved, the angle of the testing needle is adjusted, the original 90-degree is, the contact area is increased, and the pressure of the spring sleeved on the test needle is adjusted to 10-15G from the original 60-80G.

Description

Device is reformed transform to keypad test needle

Technical Field

The utility model belongs to the technical field of test jig test fixture, concretely relates to keypad test needle reforms transform device.

Background

In the production process of the PCB, electrical defects such as short circuit, open circuit and electric leakage caused by external factors are difficult to avoid, and in addition, the PCB circuit board continuously evolves towards high density, fine pitch and multiple levels, if the bad boards cannot be screened out in time and flow into the manufacturing process, more cost waste is caused, so that the technology for improving the test can provide a solution for reducing the rejection rate and improving the product yield for PCB manufacturers besides the improvement of the manufacturing process control.

The normal key position is required to be well contacted, the abnormality such as impression can not exist, the design of the current test needle for key position is consistent with that of the test needles at other positions, the key position is easy to be damaged and scrapped in the operation process, and the improvement is difficult through the operation mode.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a keypad test needle transformation device, the pressure that increases and reduce the push down spring through test needle area of contact comes to reach the test needle and reduces the purpose that reaches not to press up with button position contact pressure.

in order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a keypad test needle transformation device, includes last mould assembly, test needle, needle cover, spring and lower mould assembly, a plurality of groups the test needle is installed in the inside of a plurality of groups needle covers, test needle and last mould assembly swing joint, a plurality of groups the afterbody at a plurality of groups test needle, a plurality of groups are installed respectively to the one end of spring the spring is installed respectively in the inside of a plurality of groups needle covers, a plurality of groups the needle cover is installed respectively on last mould assembly, lower mould assembly sets up the below at last mould assembly.

Preferably, the upper die assembly comprises a fixed plate, an upper connecting plate, a first layer plate, a second layer plate and an upper pressing plate, the upper connecting plate is arranged below the fixed plate, a plurality of groups of upper connecting columns are arranged between the fixed plate and the upper connecting plate, the fixed plate is connected with the upper connecting plate through the upper connecting columns, the first layer plate is arranged below the upper connecting plate, the second layer plate is arranged below the first layer plate, the upper pressing plate is arranged below the second layer plate, four groups of upper guide pillars are arranged between the upper connecting plate and the upper pressing plate, the four groups of upper guide pillars respectively penetrate through the first layer plate and the second layer plate, and two ends of the four groups of upper guide pillars are respectively connected with the upper connecting plate and the upper pressing plate.

Preferably, the lower die assembly comprises a bottom plate, a lower connecting plate, a third plate, a fourth plate and a lower pressing plate, the lower connecting plate is arranged above the bottom plate, a plurality of groups of lower connecting columns are arranged between the bottom plate and the lower connecting plate, two ends of each lower connecting column are respectively connected with the bottom plate and the lower connecting plate, the third plate is arranged above the lower connecting plate, the fourth plate is arranged above the third plate, the lower pressing plate is arranged above the fourth plate, a plurality of groups of lower guide pillars are arranged between the lower connecting plate and the lower pressing plate, and two ends of each lower guide pillar are respectively connected with the lower connecting plate and the lower pressing plate.

Compared with the prior art, the beneficial effects of the utility model are that:

1. The contact area of the test needle is increased, and the pressure of the pressing spring is reduced to achieve the purpose that the contact pressure of the test needle and the key position is reduced to achieve non-pressing.

2. The angle of the test needle is adjusted to 120 degrees from the original 90 degrees, and the contact area is increased.

3. The spring pressure on the test needle is adjusted to 10-15G from 60-80G.

Drawings

fig. 1 is an exploded view of the present invention;

Fig. 2 is an overall schematic view of the present invention;

FIG. 3 is a schematic view of an upper mold assembly of the present invention;

Fig. 4 is a schematic view of the lower mold assembly of the present invention.

In the figure: 1. an upper die assembly; 101. a fixing plate; 102. an upper connecting plate; 103. a first laminate; 104. a second laminate; 105. an upper pressure plate; 106. an upper connecting column; 107. an upper guide post; 2. a test pin; 3. a needle sleeve; 4. a spring; 5. a lower die assembly; 501. a base plate; 502. a lower connecting plate; 503. a third laminate; 504. a fourth laminate; 505. a lower pressing plate; 506. a lower connecting column; 507. and a lower guide post.

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. 1-4, the present invention provides a technical solution: the utility model provides a keypad test needle transformation device, includes mould assembly 1, test needle 2, needle cover 3, spring 4 and lower mould assembly 5, a plurality of groups test needle 2 installs in the inside of a plurality of groups needle cover 3, test needle 2 and last mould assembly 1 swing joint, a plurality of groups the afterbody at a plurality of groups test needle 2, a plurality of groups are installed respectively to the one end of spring 4 the inside at a plurality of groups needle cover 3 is installed respectively, a plurality of groups needle cover 3 is installed respectively on last mould assembly 1, lower mould assembly 5 sets up in the below of last mould assembly 1, and the top angle of test needle 2 is increased to 120 degrees by original 90 degrees, increases area of contact.

Specifically, the upper die assembly 1 includes a fixed plate 101, an upper connecting plate 102, a first layer plate 103, a second layer plate 104 and an upper pressing plate 105, the upper connecting plate 102 is disposed below the fixed plate 101, a plurality of sets of upper connecting columns 106 are disposed between the fixed plate 101 and the upper connecting plate 102, the fixed plate 101 is connected to the upper connecting plate 102 through the upper connecting columns 106, the first layer plate 103 is disposed below the upper connecting plate 102, the second layer plate 104 is disposed below the first layer plate 103, the upper pressing plate 105 is disposed below the second layer plate 104, four sets of upper guide pillars 107 are disposed between the upper connecting plate 102 and the upper pressing plate 105, the four sets of upper guide pillars 107 respectively penetrate through the first layer plate 103 and the second layer plate 104, two ends of the four sets of upper guide pillars 107 are respectively connected to the upper connecting plate 102 and the upper pressing plate 105, the top of the testing pin 2 is in interference connection with the upper pressing plate 105, and the testing pin 2 is triggered to move upwards when the upper die assembly 1 and the lower, the pushing spring 44 is pressed tightly, and the spring 4 drives the testing needle 2 to return when the upper die assembly 1 is lifted.

Specifically, the lower die assembly 5 includes a bottom plate 501, a lower connecting plate 502, a third plate 503, a fourth plate 504 and a lower pressing plate 505, the lower connecting plate 502 is disposed above the bottom plate 501, a plurality of sets of lower connecting columns 506 are disposed between the bottom plate 501 and the lower connecting plate 502, two ends of the lower connecting columns 506 are respectively connected to the bottom plate 501 and the lower connecting plate 502, the third plate 503 is disposed above the lower connecting plate 502, the fourth plate 504 is disposed above the third plate 503, the lower pressing plate 505 is disposed above the fourth plate 504, a plurality of sets of lower guiding columns 507 are disposed between the lower connecting plate 502 and the lower pressing plate 505, two ends of the lower guiding columns 507 are respectively connected to the lower connecting plate 502 and the lower pressing plate 505, and the principle of the testing machine is that a lower die is fixed

The working principle is as follows: the testing machine is characterized in that the testing needle 2 is arranged on the upper die assembly 1, all the key positions are arranged on the upper die assembly 1, the lower die assembly 5 is fixed, and the upper die assembly 1 is pressed down to contact the PCB;

the top angle of the test needle 2 is increased from the original 90 degrees to 120 degrees, and the contact area is increased;

The upper part of the test needle 2 is sleeved with a spring 4, the spring 4 contacts the surface of the PCB by the elasticity of the spring 4, the pressure of the spring 4 is reduced, and the pressure of the test needle 2 pressed on the surface of the PCB is also reduced according to the principle of acting force and return acting force;

the top of the test needle 2 contacts the PCB, and the spring 4 is sleeved in the tail of the test needle 2 to extend and retract the needle head.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (3)

1. The utility model provides a device is reformed transform to keypad test needle, includes last mould component (1), test needle (2), needle cover (3), spring (4) and lower mould component (5), its characterized in that: a plurality of groups test needle (2) are installed in the inside of a plurality of groups needle cover (3), test needle (2) and last mould subassembly (1) swing joint, a plurality of groups the afterbody at a plurality of groups test needle (2) is installed respectively to the one end of spring (4), a plurality of groups the inside at a plurality of groups needle cover (3), a plurality of groups are installed respectively to spring (4) needle cover (3) on last mould subassembly (1), lower mould subassembly (5) sets up the below at last mould subassembly (1).

2. The key board test pin modification device according to claim 1, wherein: the upper die assembly (1) comprises a fixing plate (101), an upper connecting plate (102), a first layer plate (103), a second layer plate (104) and an upper pressing plate (105), the upper connecting plate (102) is arranged below the fixing plate (101), a plurality of groups of upper connecting columns (106) are arranged between the fixing plate (101) and the upper connecting plate (102), the fixing plate (101) and the upper connecting plate (102) are connected through the upper connecting columns (106), the first layer plate (103) is arranged below the upper connecting plate (102), the second layer plate (104) is arranged below the first layer plate (103), the upper pressing plate (105) is arranged below the second layer plate (104), four groups of upper guiding columns (107) are arranged between the upper connecting plate (102) and the upper pressing plate (105), and the four groups of upper guiding columns (107) respectively penetrate through the first layer plate (103) and the second layer plate (104), two ends of the four groups of upper guide posts (107) are respectively connected with the upper connecting plate (102) and the upper pressure plate (105).

3. The key board test pin modification device according to claim 1, wherein: the lower die assembly (5) comprises a bottom plate (501), a lower connecting plate (502), a third layer plate (503), a fourth layer plate (504) and a lower pressing plate (505), the lower connecting plate (502) is arranged above the bottom plate (501), a plurality of groups of lower connecting columns (506) are arranged between the bottom plate (501) and the lower connecting plate (502), two ends of the lower connecting column (506) are respectively connected with the bottom plate (501) and the lower connecting plate (502), the third layer (503) is arranged above the lower connecting plate (502), the fourth layer (504) is arranged above the third layer (503), the lower pressing plate (505) is arranged above the fourth layer plate (504), a plurality of groups of lower guide posts (507) are arranged between the lower connecting plate (502) and the lower pressing plate (505), and two ends of the lower guide post (507) are respectively connected with a lower connecting plate (502) and a lower pressing plate (505).