CN2634187Y - Probe double dynamic constant pressure cylinder for test - Google Patents

Abstract

A probe double dynamic constant pressure cylinder for test comprises an external cylinder with set size, length and diameter, an external joint coupled with an end of the external cylinder, an internal joint assembled inside the external joint, an internal cylinder coupled at front end of the internal joint with length and diameter smaller than those of the external cylinder, an internal sleeve and another end joint coupled at the other end of the external cylinder, an actuating shaft with a piston element arranged in the inner center of the internal cylinder and passing through the internal sleeve and the end joint and exposing partial length for engagement with a testing instrument, a first air inlet channel at the rear end of the actuating shaft and the piston element for driving the actuating shaft to extend forward, a second air inlet channel arranged among the external joint, the internal and external cylinder for applying a push back pressure to the actuating shaft and the piston element and drawing back the actuating shaft. Therefore, the double dynamic constant pressure cylinder can keep more ideal and reliable constant pressure for carrying out testing operation procedure of the workpiece.

Description

The two moving weighing apparatus air cylinders of detecting probe

Technical field

The two moving weighing apparatus air cylinders of the relevant a kind of detecting probe of the utility model refer to that especially a kind of spy is fit to be used in as the two moving weighing apparatus air cylinders of the test on the probe class device, and can keep better and reliable weighing apparatus level pressure power for workpiece is carried out the test jobs program.

Background technique

After the circuit board of electronic equipment or LCD touch panel and mobile computer are made, having required set-up function for guaranteeing finished product, to its important point of contact, tested as button or point of contact, is to be necessary step.Whether no matter adopt automated procedures to carry out testing procedure, its main testing tool is probe unit.And be to cooperate the test point of different product at diverse location, the needle shaft of probe unit is also thereby the relative testing needle end of various different types arranged.

In existing probe unit, it is loaded on an axle sleeve with a needle shaft activity set usually, and its testing needle end can be exposed press to test point.Referring to Fig. 1, be this type of and commonly use probe unit, the probe unit of this figure is dismountable.This probe unit 10 contains a needle shaft 11 that is plugged in the axle sleeve 12, this needle shaft 11 be provided with one in order to the pin end 110 of contact crimping to be tested, this pin end 110 can be various different types according to above-mentioned.Axle sleeve 12 is essentially a hollow article, is provided with the real face 14 of an opening end 13 and another relative end.Needle shaft 11 end faces in axle sleeve 12 pipe and manage in then be provided with an elastic component 15 that is generally coil spring between the bottom.Above-mentioned needle shaft 11 can be in axle body near the default concave part 16 of terminal suitable location, axle sleeve 12 then in elastic component 15 and needle shaft 11 are inserted axle sleeve 12 pipes after, locate recess 17 by the outside with instrument riveted one, needle shaft 11 and axle sleeve 12 are combined into one, and make elastic component 15 be in pressured state, its bounce-back tension force will make needle shaft 11 become as shown in the figure normality extension, and 16 of concave parts can limit its maximum extend stroke.Needle shaft 11 is when testing under this state, can move back pressure elasticity assembly 15 in stressed because of itself and test specimen to be measured press, or because of not stressed with needle shaft 11 pop into position.

According to above-mentioned commonly using in the probe unit, no matter needle shaft 11 contracts in the pressurized or bullet Zhang Junyu internal preset elastic component (be spring) 15 of pressure after discharging is closely bound up.But for than length, then its longitudinal length will shorten because of stressed this type of spring 15 with certain elasticity coefficient when crimping is tested when pressurized (promptly not carrying out the crimping test) not.That is to say that this type of commonly uses probe unit when not carrying out the crimping test, its elastic resistance is lower; In case during the crimping test, then will its resistance relatively constantly be raise because of spring 15 is compressed gradually.This movement structure characteristic of commonly using probe unit constantly increases its pressure that presses down in the test process, but not for the weighing apparatus pressure condition, causes the probe test precision to be adversely affected, and truly has necessity of being improved.

Summary of the invention

Main purpose of the present utility model is promptly providing a kind of detecting probe two moving weighing apparatus air cylinders, and it can keep better and reliable weighing apparatus level pressure power for workpiece is carried out the test jobs program.

For reaching above-mentioned purpose, the technical solution of the utility model is as follows: the two moving weighing apparatus air cylinders of a kind of detecting probe, and the urceolus that it has big or small length of setting and diameter is characterized in that, in the terminal combination of this urceolus one socket; This socket is in its inner another spigot of assembling, and at this spigot front group unification length and diameter all less than the inner core of above-mentioned urceolus; Overlap and the other end joint in the end then capable of being combined in addition along urceolus; The action shaft of one sheathed piston piece can be assembled in the interior center of above-mentioned inner core, and passes above-mentioned interior cover and end connector, and its local length is exposed for preparing to engage testing tool; Above-mentioned spigot forms one in order to promoting first gas-entered passageway that action shaft protracts in action shaft and piston piece rear end thereof, and forms between socket and inner/outer tube in order to action shaft and piston piece thereof are formed the pusher back pressure and make second gas-entered passageway that contracts in the action shaft.

The utility model owing to make as the advance and retreat of probe class testing instrument replaces with air pressure control as the class elastic component of spring, and the driving pressure in its test process is decided for weighing apparatus, and the accurate testing degree will more improve and have a value on the industry.

Description of drawings

Fig. 1 is for commonly using the probe unit structural drawing.

Fig. 2 is the preferable enforcement stereogram of the utility model.

Fig. 3 is the assembly exploded view of Fig. 2.

Fig. 4 is the three-dimensional cross-section cutaway view of Fig. 2.

Fig. 5 is the three-dimensional assembly sectional exploded view of Fig. 2.

Fig. 6 is the utility model cross-section cutaway view, shows that it is to uphold test mode.

Fig. 7 is the utility model cross-section cutaway view, shows that it is a retracted state.

Fig. 8 is the spendable air pressure difference of the utility model installation drawing.

Label declaration in graphic:

20 ... urceolus 21 ... endoporus 30 ... socket

31 ... the preceding portion 32 that inserts ... rear tube 33 ... gap slot

34 ... endoporus 35 ... enlarge rank portion 40 ... spigot

41 ... inserted link 42 ... air inlet tube 43 ... back inserted link

44 ... center inlet hole 50 ... inner core 51 ... an endoporus ancient piece of jade, round, flat and with a hole in its centre

60 ... interior cover 61 ... gap slot 62 ... inner order opening

63 ... end 70 is spirally connected ... end connector 71 ... central hole

72 ... back plug-in unit 73 ... end 80 is spirally connected ... action shaft

81 ... piston piece 82,83 ... bulge loop 84 ... bar is spirally connected

90 ... air pressure difference device 91 ... side connector

92,93 ... air inlet-outlet pipe 100 ... air inlet tube

Embodiment

Referring to Fig. 2-5, the utlity model has one and set the urceolus 20 of big or small length and diameter, and can be in these urceolus 20 terminal combination one sockets 30.This socket 30 is in its inner another spigot 40 of assembling, and at this spigot 40 front group unification length and diameter all less than the inner core 50 of above-mentioned urceolus 20.Hold cover 60 and the other end joint 70 in then capable of being combined in addition along urceolus 20.One action shaft 80 can be assembled in the interior center of above-mentioned inner core 50, and passes above-mentioned interior cover 60 and end connector 70, its local length is exposed for preparing engage testing tool, and is as probe unit, not shown in the figures.

Above-mentioned urceolus 20 is a hollow tube, contains endoporus 21.Being combined in its 30 of terminal hollow tubular socket is provided with one and can be plugged in the preceding slotting portion 31 and of this endoporus 21 in order to connect the rear tube 32 of suction tude.Front-end edge along preceding slotting portion 31 then is provided with most gap slots 33 at interval, and hole 34 front ends form an expansion rank portion 35 within it.40 of above-mentioned spigots can make its mobile jib portion location be combined in above-mentioned expansion rank portion 35, and are extended an inserted link 41 forward and extended back that another contains the back inserted link 43 of air inlet tube 42 by this main rod body.This spigot 40 is provided with one simultaneously and extends the path center inlet hole 44 of whole length.

The rear end of above-mentioned hollow inner core 50 thereby capable of being combined in the preceding inserted link 41 of above-mentioned spigot 40, and make the back inserted link 43 of spigot 40 be plugged in the endoporus 34 of socket 30.Above-mentioned action shaft 80 near tail end structure one piston piece 81 in advance, makes this piston piece 81 can be pressed against the inner hole wall 51 of inner core 50 with the state of close gas in shaft.In illustrated embodiment, should be situated between with the piston piece 81 that elastic material is made is loaded between the bulge loop 82,83 of 80 liang of intervals of action shaft.

60 endoporus 21 front ends that can be assembled in urceolus 20 of cover in above-mentioned please be simultaneously referring to Fig. 5,6, and its Inner Front End is located the front end local length of hollow inner core 50 equally with inner order opening 63 windings of default back, and is provided with most gap slots 61 at interval in contiguous this junction.70 of above-mentioned end connectors are provided with a central hole 71, and are provided with the preceding inner order opening 62 that the state of holding one's breath is plugged in interior cover 60 through a back plug-in unit 72, and the external location of end 73 preparations that is spirally connected in the past.And above-mentioned action shaft 80 is positioned spigot 40 path center inlet hole 44 front ends except that its rear end is assembled, and the then movable central hole 71 that passes interior cover 60 and end connector 70 of its shaft, its front end then are provided with the bar 84 that is spirally connected for joint interlock testing tool.

Referring to Fig. 6, this usefulness is novel according to said structure thereby can be when the inlet hole 44 controlled air inlets of the path center of spigot 40, the terminal piston piece 81 of the action shaft that applies pressure to end after 80s and shaft thereof, whole action shaft 80 thereby push away before direction shown in the arrow.Under the above-mentioned state that protracts, when the control air inlet is sent into by the rear tube 32 of socket 30, as shown in Figure 7, pressurized gas will be gone ahead of the rest by the gap slot 33 of socket 30 along direction shown in the arrow, pass through then between urceolus 20 and the inner core 50, send into inner core 50 inside by the gap slot 61 of interior cover 60 again, and can form back pressures, whole action shaft 80 thereby after direction shown in the arrow, return original position the piston piece that moved forward 81.

See also Fig. 8, for conveniently carrying out air inlet control, the utility model can will be connected to the side connector 91 of an air pressure difference device 90 just like the air inlet tube 100 shown in Fig. 6,7.This air pressure difference device 90 contains two other air inlet-outlet pipes 92,93, and these air inlet-outlet pipes 92,93 can be connected to a solenoid valve (not shown).This solenoid valve can be used as the intake and exhaust control gear of air inlet-outlet pipe 92,93, and for example, when a pipeline 92 air inlets wherein, another pipeline 93 carries out exhaust; Otherwise when a pipeline 93 air inlets wherein, 92 of another pipelines carry out exhaust.By this and may command the utility model device by the path center inlet hole 44 of spigot 40 protracting, or retreat with control by the rear tube 32 of socket 30.

Above illustrated embodiment only is not in a limitative way with the utility model for convenience of description, not from the utility model spirit category, be familiar with this industry skill personage various simple and easy distortion and the modification that can do, all must include in interest field of the present utility model.

Claims (2)

1. two moving weighing apparatus air cylinders of a detecting probe, it has a urceolus of setting big or small length and diameter, it is characterized in that the terminal combination of this urceolus one socket; This socket is in its inner another spigot of assembling, and at this spigot front group unification length and diameter all less than the inner core of above-mentioned urceolus; Then make up cover and the other end joint in one along other end of urceolus; The action shaft of one sheathed piston piece is assembled in the interior center of above-mentioned inner core, and passes above-mentioned interior cover and end connector, and its local length is exposed for preparing to engage testing tool; Above-mentioned spigot forms one in order to promote first gas-entered passageway that action shaft protracts in action shaft and piston piece rear end thereof, forms between socket and inner/outer tube in order to action shaft and piston piece formation pusher back pressure thereof are made second gas-entered passageway that contracts in the action shaft.

2. the two moving weighing apparatus air cylinders of detecting probe according to claim 1, it is characterized in that, this urceolus contains endoporus, is combined in its terminal socket and is hollow tubular and is provided with one and can be plugged in the preceding slotting portion and of this endoporus in order to connect the rear tube of suction tude; Front-end edge along preceding slotting portion then is provided with most gap slots at interval; Above-mentioned spigot extends an inserted link forward by main rod body and extends back that another contains the back inserted link of air inlet tube, and this spigot is provided with one simultaneously and extends the path center inlet hole of whole length; The rear end of above-mentioned hollow inner core is combined in the preceding inserted link of above-mentioned spigot, and the back inserted link of spigot is plugged in the endoporus of socket; Near tail end structure one piston piece in advance, this piston piece is pressed against the inner hole wall of inner core to above-mentioned action shaft with the state of close gas in shaft; Cover then is assembled in the endoporus front end of urceolus in above-mentioned, and the front end local length of hollow inner core is located in its Inner Front End winding, and is provided with most gap slots at interval in contiguous this junction; Above-mentioned end connector then is provided with a central hole, and sees through a back plug-in unit and be provided with the state of holding one's breath and be plugged in interior cover, and is provided with an external location with the end that before is spirally connected; And the assembling of above-mentioned action shaft rear end is positioned outside the inlet hole front end of spigot path center, and the then movable central hole that passes interior cover and end connector of its shaft, its front end then are provided with the bar that is spirally connected for engaging the interlock testing tool.

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