CN208820098U - Spring probe - Google Patents

Abstract

The utility model provides a kind of spring probe, including needle shaft, spring, rear cover and with the needle tubing of accommodating chamber.Accommodating chamber runs through forward needle tubing and forms out the first accent, and needle shaft at least has initial position and compression position in the interior and opposite needle tubing of accommodating chamber is slidably placed on, and spring is located in accommodating chamber and front end is abutted with needle shaft elasticity；Rear cover includes the assembled portion being assembled on needle tubing and the socket part being placed through forward in spring, and one of socket part and needle shaft offer socket slid chamber, and the other of socket part and needle shaft have elastic arm；Elastic arm in being squeezed and deformed is located at socket slid chamber and abuts with the cavity wall sliding of socket slid chamber；Alternatively, elastic arm in being squeezed and deformed is inserted into socket slid chamber during needle shaft switches to compression position by initial position and abuts with the cavity wall sliding of socket slid chamber；The rear end of spring abuts with needle tubing or assembled portion elasticity and needle shaft is driven to slide onto initial position, to meet the use demand under high vibration frequency environment.

Description

Spring probe

Technical field

The utility model relates under a kind of probe more particularly to a kind of frequency environment applied to high vibration and prevent hit Spring probe.

Background technique

Pogo pin (also known as probe) be it is a kind of be applied to consumption electronic product, communication, automobile, medical treatment, aerospace, Core component in the fields such as military project in precision connector, by the probe go to realize precision connector and exterior electrical components it Between electric connection, to play the normal function of precision connector.

It is well known that probe has generally comprised needle shaft, needle tubing and spring, needle shaft is placed on needle tubing and opposite needle tubing has initially Position and the compression position slid axially backward along needle shaft, spring are closed in needle tubing and are contacted between needle shaft and needle tubing, with Needle shaft is enabled to do flexible sliding with respect to needle tubing, and needle shaft slides onto initial position under the action of the spring；Therefore in needle shaft and outside Portion's electronic component be electrically connected during, needle shaft by exterior electrical components pushing tow and by initial position slide onto compression position with Realize the purpose that the two is electrically connected.

But since the needle shaft of existing probe keeps closely contact shape with exterior electrical components under the action of the spring State, when probe is under vibration environment, especially under high vibration frequency environment, exterior electrical components can be together with needle shaft along needle The vibration of axis axial reciprocating, then due to being clearance fit between needle shaft and needle tubing, therefore make needle shaft and needle during of reciprocating vibration There are moment not contact conditions between the inner sidewall of pipe, so that probe generates hit, so that existing probe can not Meets the needs of under vibration environment especially high vibration frequency environment.

Therefore, it is badly in need of wanting a kind of high contact stabilization to meet demand under vibration environment especially high vibration frequency environment Spring probe overcomes above-mentioned defect.

Utility model content

The purpose of this utility model is to provide a kind of high contact stabilizations to meet vibration environment especially high vibration frequency The spring probe of demand under rate environment.

In order to achieve the above object, the utility model provides a kind of spring probe, including needle shaft, spring, rear cover and Needle tubing with accommodating chamber.The accommodating chamber through the needle tubing and forms out the first accent axially forward along the needle shaft, The needle shaft is in being slidably placed in the accommodating chamber and the relatively described needle tubing at least has an initial position and one along the needle The compression position of axis slid axially backward stretches out the needle from first accent when needle shaft is located at the initial position Manage or be exposed to first accent；The rear cover include the assembled portion that is assembled on the needle tubing and along the needle shaft it is axial to Before be placed through socket part in the spring, one of the socket part and needle shaft offer socket slid chamber, the socket The other of portion and needle shaft have the elastic arm of axial direction and the socket slid chamber face along the needle shaft；The elastic arm is in institute It states and is located at the socket slid chamber with being squeezed and deformed in the cavity wall by the socket slid chamber when needle shaft is in the initial position, The elastic arm also the needle shaft switches to the compression position by the initial position during with the socket slid chamber Cavity wall sliding abuts；Alternatively, the elastic arm is in during the needle shaft switches to the compression position by the initial position The cavity wall in the socket slid chamber and with the socket slid chamber is inserted by the cavity wall of the socket slid chamber with being squeezed and deformed Sliding abuts；The spring is located at the axial direction arrangement in the accommodating chamber and along the needle shaft, the front end of the spring with it is described Needle shaft elasticity abuts, and the rear end of the spring abuts with the needle tubing or assembled portion elasticity and drives described in the needle shaft slides onto Initial position.

Preferably, the elastic arm extends the cavity wall for being convex to the socket slid chamber and for abutting with cavity wall sliding Bulge-structure, the cavity wall of the socket slid chamber squeeze the elastic arm deformation by bulge-structure described in pushing tow；Alternatively, described The cavity wall of socket slid chamber, which is extended, is convex to the elastic arm and the bulge-structure for squeezing the elastic arm deformation.

Preferably, the bulge-structure along the needle shaft circumferentially.

Preferably, the outer profile that the bulge-structure is intercepted by the plane of the axial line of the excessively described needle shaft is curve or arc Line.

Preferably, the needle shaft and rear cover are respectively conductive structure, the needle tubing is conductive structure or insulation system.

Preferably, the accommodating chamber also through the needle tubing and forms out the second accent axially backward along the needle shaft, The assembled portion stretches out the needle tubing from second accent or is exposed to second accent.

Preferably, the radial dimension of the assembled portion be greater than the socket part radial dimension, the rear end of the spring with The front end surface elastic of the assembled portion abuts.

Preferably, the rear cover also includes the external connection portion positioned at the assembled portion rear, the external connection portion is from described second Accent stretches out the needle tubing.

Preferably, the needle shaft includes the axial direction along the needle shaft from front to back successively comprising needle section and auxiliary section, institute Auxiliary section and the accommodating chamber clearance fit are stated, the radial dimension of the auxiliary section is greater than the radial dimension of the needle section and makes The auxiliary section and the joint of needle section form a shoulder, and the shoulder is when the needle shaft is in the initial position and institute It states needle tubing to keep out to stop the needle shaft to skid off first accent forward, the socket slid chamber or elastic arm are formed in described match Conjunction portion, the front end of the spring are abutted with the rear end surface elastic of the auxiliary section.

Preferably, the elastic arm at least two and being separated along the radially spaced of the needle shaft, the chamber of the socket slid chamber The deformation of elastic arm described in radial compression of the wall along the needle shaft

Compared with prior art, since the other of socket part and needle shaft have the axial direction and socket slid chamber along needle shaft The elastic arm of face, elastic arm are located at socket sliding in by the cavity wall of socket slid chamber when needle shaft is in initial position with being squeezed and deformed Chamber, elastic arm also abut during needle shaft switches to compression position by initial position with the cavity wall sliding of socket slid chamber；Alternatively, Elastic arm is inserted into set with being squeezed and deformed in by the cavity wall of socket slid chamber during needle shaft switches to compression position by initial position It connects in slid chamber and is abutted with the cavity wall sliding of socket slid chamber；Therefore during needle shaft and exterior electrical components are electrically connected, Exterior electrical components pushing tow needle shaft slides onto compression position by initial position, at the same time, cavity wall of the elastic arm by socket slid chamber It is squeezed and deformed and is abutted with the cavity wall sliding of socket slid chamber, elastic arm and socket slid chamber are made under the conditions of effective positive force Cavity wall be always maintained at sliding abutting state and have high contact stabilization；Therefore, in vibration environment especially high vibration frequency It is external at this time even if needle shaft is still keeping high contact stabilization to prevent hit along the vibration of its axial reciprocating with rear cover under environment The electric current that electronic component is transmitted to needle shaft is transferred out by rear cover, alternatively, exterior electrical components be transmitted to the electric current of needle shaft according to It is secondary to be transferred out again by rear cover and needle tubing, to meet the needs of under vibration environment especially high vibration frequency environment.

Detailed description of the invention

Fig. 1 is planar structure signal of the spring probe of the implementation of the utility model first when needle shaft is in initial position Figure.

Fig. 2 is spring probe shown in FIG. 1 by the schematic diagram of internal structure after the plane cutting of its axial line excessively.

Fig. 3 is the exploded view of spring probe shown in FIG. 1.

Fig. 4 is the exploded view of spring probe shown in Fig. 2.

Fig. 5 is status diagram of the spring probe shown in Fig. 2 when just contacting with exterior electrical components.

Fig. 6 be spring probe shown in fig. 5 by exterior electrical components pushing tow to compression position when status diagram.

Fig. 7 is planar structure signal of the spring probe of the implementation of the utility model second when needle shaft is in initial position Figure.

Fig. 8 is spring probe shown in Fig. 7 by the schematic diagram of internal structure after the plane cutting of its axial line excessively.

Fig. 9 is the exploded view of spring probe shown in Fig. 7.

Figure 10 is the exploded view of spring probe shown in Fig. 8.

Figure 11 is status diagram of the spring probe shown in Fig. 8 when just contacting with exterior electrical components.

Figure 12 be spring probe shown in Figure 11 by exterior electrical components pushing tow to compression position when status diagram.

Figure 13 be the utility model third implement spring probe by cross its axial line cutting after and needle shaft, needle tubing, Exploded view when spring and rear cover are separated from each other.

Figure 14 be the utility model the 4th implement spring probe by cross its axial line cutting after and needle shaft, needle tubing, Exploded view when spring and rear cover are separated from each other.

Specific embodiment

In order to which the technology contents, construction feature of the utility model is described in detail, below in conjunction with embodiment and cooperate attached drawing It is described further.

The spring probe 100a of first embodiment includes needle shaft 10, spring 20, has accommodating chamber referring to FIG. 1 to FIG. 4, 31 needle tubing 30 and rear cover 40.Accommodating chamber 31 through needle tubing 30 and forms out the first accent 311 axially forward along needle shaft 10, Accommodating chamber 31 is also along needle shaft 10 axially backward through needle tubing 30 and the second accent 312 is formed out, certainly, according to actual needs, In other embodiments, accommodating chamber 31 can be designed to not rearwardly through needle tubing 30 and form out the second accent 312, therefore not with this It is limited.Needle shaft 10 in be slidably placed in accommodating chamber 31 and opposite needle tubing 30 at least have just like initial position shown in fig. 5 and One along needle shaft 10 the compression position (as shown in Figure 6) slid axially backward；When needle shaft 10 is located at initial position as shown in Figure 5 Needle tubing 30 is stretched out from the first accent 311, certainly, according to actual needs, the needle shaft 10 positioned at initial position can also be exposed to first Accent 311 can see the needle shaft 10 when being located at first platform position from the first accent 311, to meet needle shaft 10 and external electrical The needs in electrical contact of element 200.Rear cover 40 include the assembled portion 40a that is assembled on needle tubing 30 and along needle shaft 10 axially forward The socket part 40b being placed through in spring 20 makes to be separated with spring 20 between socket part 40b and the inner sidewall of accommodating chamber 31, due to this The accommodating chamber 31 of embodiment is rearwardly through needle tubing 30 and forms out the second accent 312, and assembled portion 40a at this time is exposed to the second accent 312, i.e., assembled portion 40a is seen from the second accent 312, in order to which assembled portion 40a is connect with exposed electrical, but not limited to this. Needle shaft 10 offers socket slid chamber 60, and socket part 40b has the elastic arm of axial direction and socket 60 face of slid chamber along needle shaft 10 50, it is preferably the elastic arm 50 at least two and radial direction along needle shaft 10 is spaced, alternatively, all 50 cross sections of elastic arm Outer profile be located on the same circle, more conducively elastic arm 50 insertion socket slid chamber 60 or from socket slid chamber 60 extract, certainly, root It is designed to not be located on the same circle according to actual needs, elastic arm 50 can also be set as one, and but not limited to this；Elastic arm 50 exists It is located at socket sliding in by the cavity wall 61 of socket slid chamber 60 with being squeezed and deformed when needle shaft 10 is in initial position as shown in Figure 5 Chamber 60 is preferably radial compression elastic arm 50 deformation of the cavity wall 61 along needle shaft 10 for being socketed slid chamber 60, so that socket slid chamber Elastic arm 50 in 60 generates flexible deformation along the radial of needle shaft 10, slides so that the elastic arm 50 being socketed in slid chamber 60 is obtained with socket It moves chamber 60 and keeps the reseting elasticity closely abutted, so that the chamber of elastic arm 50 and socket slid chamber 60 in socket slid chamber 60 Wall 61 is constantly in abutting state；And elastic arm 50 also switched in needle shaft 10 by initial position as shown in Figure 5 it is as shown in FIG. 6 It is abutted during compression position with the sliding of cavity wall 61 of socket slid chamber 60.Spring 20 is located in accommodating chamber 31 and along needle shaft 10 Axial arrangement, the front end of spring 20 with needle shaft 10 is elastic abuts, the rear end of spring 20 abuts and drives with assembled portion 40a elasticity Needle shaft 10 slides onto initial position as shown in Figure 5, i other words, after the spring probe 100a of this implementation completes assembly, this When needle shaft 10 be in initial position as shown in Figure 5 because of the effect of spring 20, in order to needle shaft 10 and exterior electrical components 200 electric connection；Certainly, according to actual needs, the rear end of spring 20 can be abutted with 30 elasticity of needle tubing, therefore be not limited.

More specifically, as follows:

As shown in Figures 2 to 4, elastic arm 50 extends the cavity wall 61 for being convex to socket slid chamber 60 and for sliding with the cavity wall 61 The bulge-structure 70 abutted is moved, the cavity wall 61 of socket slid chamber 60 squeezes the deformation of elastic arm 50 by pushing tow bulge-structure 70, therefore By bulge-structure 70, abut elastic arm 50 with the cavity wall 61 for being socketed slid chamber 60 closer, on the other hand more just It is abutted in elastic arm 50 in the sliding in the cavity wall 61 of socket slid chamber 60.Specifically, circumferential cloth of the bulge-structure 70 along needle shaft 10 It sets, is preferably so that bulge-structure 70 is formed a circle, such as be located on the same circle the outer profile of the cross section of bulge-structure 70 It or so that bulge-structure 70 is abutted in the circumferential sliding of cavity wall 61 with socket slid chamber 60, therefore is had on same circle Better high contact stabilization.For example, the outer profile that bulge-structure 70 is intercepted by the plane for the axial line for crossing needle shaft 10 For camber line, more excellent is circular arc line, and state is as shown in Fig. 2, Fig. 4, Fig. 5 and Fig. 6, so that bulge-structure 70 and socket slid chamber 60 Cavity wall 61 between frictional resistance it is smaller, therefore bulge-structure 70 is more smooth in the sliding in cavity wall 61；Certainly, according to practical need It wants, the outer profile that bulge-structure 70 is intercepted by the plane for the axial line for crossing needle shaft 10 can also be curve, therefore not to be limited.

As shown in Figures 2 to 4, the radial dimension of assembled portion 40a is greater than the radial dimension of socket part 40b, at this point, spring 20 Rear end abutted with the front end surface elastic of assembled portion 40b, in order to the electric current that flows into spring 20 by assembled portion 40b to unofficial biography It is defeated；Specifically, rear cover 40 is also stretched out comprising the external connection portion 40c positioned at the rear assembled portion 40a, external connection portion 40c from the second accent 312 Needle tubing 30 and convenient for being connect with exposed electrical, state is as shown in Figure 2；It is preferably that the radial dimension of external connection portion 40c is less than assembling The radial dimension of portion 40a, but not limited to this.It will be appreciated that assembled portion 40a at this time can be set when deleting external connection portion 40c The structure for stretching out needle tubing 30 from the second accent 312 is counted into, therefore is not limited.

As shown in Figures 2 to 4, needle shaft 10 successively includes needle section 10a comprising the axial direction along needle shaft 10 and matches from front to back Conjunction portion 10b, auxiliary section 10b and 30 clearance fit of accommodating chamber, the radial dimension of auxiliary section 10b are greater than the radial ruler of needle section 10a Joint that is very little and making auxiliary section 10b and needle section 10a forms a shoulder 13, and shoulder 13 is when needle shaft 10 is in initial position It is kept out with needle tubing 30 to stop needle shaft 10 to skid off the first accent 311 forward, state is as shown in Figure 2；At this point, socket 60 shape of slid chamber At in auxiliary section 10b, the front end of spring 20 is abutted with the rear end surface elastic of auxiliary section 10b.Specifically, in this present embodiment, needle Head 10a has chondritic 12, so that more reliably pushing tow needle shaft 10 is sliding in accommodating chamber 31 for exterior electrical components 200 It moves, certainly, is flexibly designed to other shapes of structure as needed, therefore is not limited.

Fig. 5 to Fig. 6 is please referred to, to the spring probe 100a of first embodiment and the electric connection of exterior electrical components Be illustrated in journey: when exterior electrical components 200 are just contacted with needle shaft 10, state is as shown in Fig. 5；Then, externally electronics The mobile exterior electrical components 200 of the arrow direction on the side of element 200 so that exterior electrical components 200 along needle shaft 10 it is axial to Pushing tow needle shaft 10 switches to compression position by initial position afterwards, so that axis of the bulge-structure 70 on elastic arm 50 along needle shaft 10 To continuing to slide forward in the cavity wall 61 of socket slid chamber 60, state is as shown in Figure 6.

Please refer to Fig. 7 to Figure 12, the spring probe 100b of second embodiment and the spring probe of first embodiment The structure of 100a is essentially identical, and distinctive points are as follows:

(1) in second embodiment, the cavity wall 61 of socket slid chamber 60, which is extended, is convex to elastic arm 50 and for squeezing elastic arm The bulge-structure 70 of 50 deformations；And in first embodiment, elastic arm 50 extends the cavity wall 61 for being convex to be socketed slid chamber 60 and is used in combination In the bulge-structure 70 abutted with the cavity wall 61 sliding；I other words the setting position of the bulge-structure 70 in two embodiments is different. Since the bulge-structure 70 of the present embodiment is the institute of cavity wall 61 by socket slid chamber 60 at therefore can be by welding, rolling ditch, beat Thick stick the modes such as gets ready the cavity wall 61 for making to be socketed slid chamber 60 is gone to form bulge-structure 70；And in first embodiment, Ke Yitong Crossing the modes such as welding or cutting makes to form bulge-structure 70 on elastic arm 50.

It is other to be basically the same as those in the first embodiment other than above-mentioned distinguishing characteristics, therefore details are not described herein.

It please refers to shown in Figure 11 and Figure 12, to the spring probe 100b of second embodiment and the electrical property of exterior electrical components Be illustrated in connection procedure: when exterior electrical components 200 are just contacted with needle shaft 10, state is as shown in Figure 11；Then, along outer The mobile exterior electrical components 200 of arrow direction on 200 side of portion's electronic component, so that exterior electrical components 200 are along needle shaft 10 Pushing tow needle shaft 10 switches to compression position by initial position axially backward, so that the bulge-structure 70 in cavity wall 61 is along needle shaft 10 axial continuation slides backward in the cavity wall 61 of socket slid chamber 60, and state is as shown in Figure 12.

Please refer to Figure 13, the knot of the spring probe 100a of the spring probe 100c and first embodiment of 3rd embodiment Structure is essentially identical, and distinctive points are as follows:

(1) in 3rd embodiment, needle shaft 10 has elastic arm 50 and socket part 40a offers socket slid chamber 60；And in In first embodiment, needle shaft 10 offers socket slid chamber 60 and socket part 40a has elastic arm 50.

It is other to be basically the same as those in the first embodiment other than above-mentioned distinguishing characteristics, therefore details are not described herein.

Figure 14 is please referred to, the spring probe 100c's of the spring probe 100d and 3rd embodiment of fourth embodiment Structure is essentially identical, and distinctive points are as follows:

(1) in fourth embodiment, the cavity wall 61 of socket slid chamber 60, which is extended, is convex to elastic arm 50 and for squeezing elastic arm The bulge-structure 70 of 50 deformations；And in 3rd embodiment, elastic arm 50 extends the cavity wall 61 for being convex to be socketed slid chamber 60 and is used in combination In the bulge-structure 70 abutted with the cavity wall 61 sliding；I other words the setting position of the bulge-structure 70 in two embodiments is different.

It is other identical with 3rd embodiment other than above-mentioned distinguishing characteristics, therefore details are not described herein.

It will be appreciated that in front in four embodiment disclosure of that, and according to actual needs, it can be four to front Embodiment is transformed, that is, elastic arm 50 is designed to be in be covered during needle shaft 10 switches to compression position by initial position The cavity wall 61 for connecing slid chamber 60 is inserted into socket slid chamber 60 and is supported with the sliding of cavity wall 61 of socket slid chamber 60 with being squeezed and deformed It connects, i other words, elastic arm 50 is located at outside socket slid chamber 60 when needle shaft 10 is in initial position, when exterior electrical components 200 are pushed up During axis 10 of pushing pin switches to compression position by initial position, just driving elastic arm 50 is in be squeezed by the cavity wall 61 of socket slid chamber 60 It is inserted into compressive strain in socket slid chamber 60 and is abutted with the sliding of cavity wall 61 of socket slid chamber 60.Due to oscillation ring to be applied to Border occasion, and according to needle shaft 10 in vibration environment caused by amplitude and needle shaft 10 slide by initial position the row of compression position Journey, to set the stroke that elastic arm 50 is slipped in the cavity wall 61 of socket slid chamber 60, the trip has to be larger than needle shaft 10 and is produced Raw amplitude, to prevent elastic arm 50 from surprisingly falling off at socket slid chamber 60 in vibration processes.

Compared with prior art, since the other of socket part 40b and needle shaft 10 have the axial direction and set along needle shaft 10 The elastic arm 50 of 60 face of slid chamber is connect, elastic arm 50 is squeezed when needle shaft 10 is in initial position in by the cavity wall 61 of socket slid chamber 60 Compressive strain be located at socket slid chamber 61, elastic arm 50 also during needle shaft 10 switches to compression position by initial position with socket The cavity wall 61 of slid chamber 60, which slides, to abut；Alternatively, elastic arm 50 is in during needle shaft 10 switches to compression position by initial position It is inserted into being squeezed and deformed by the cavity wall 61 of socket slid chamber 60 in socket slid chamber 60 and sliding with the cavity wall 61 of socket slid chamber 60 It moves and abuts；Therefore during needle shaft 10 and exterior electrical components 200 are electrically connected, 200 pushing tow needle shaft 10 of exterior electrical components by Initial position slides onto compression position, at the same time, elastic arm 50 by socket slid chamber 60 cavity wall 61 be squeezed and deformed and with socket The cavity wall 61 of slid chamber 60, which slides, to abut, and elastic arm 50 is made under the conditions of effective positive force and is socketed the cavity wall 61 of slid chamber 60 It is always maintained at sliding abutting state and there is high contact stabilization；Therefore, under vibration environment especially high vibration frequency environment, Even if needle shaft 10 is still keeping high contact stabilization to prevent hit along the vibration of its axial reciprocating with rear cover 40, at this time external electrical The electric current that element 200 is transmitted to needle shaft 10 is transferred out by rear cover 40, alternatively, exterior electrical components 200 are transmitted to needle shaft 10 Electric current pass sequentially through rear cover 40 and needle tubing 30 transfers out again, to meet under vibration environment especially high vibration frequency environment Demand.In addition, spring probe 100a, 100b, 100c, 100d of the utility model can be determined by size through electric current energy Power can meet 10A or more demand.

The person of being worth noting, the needle shaft 10 and rear cover 40 of aforementioned implementation are respectively conductive structure, and needle tubing 30 can choose to lead Electric structure or insulation system, when needle tubing 30 is selected as insulation system, at this time when the spring probe of multiple the utility model 100a, 100b, 100c, 100d are in use, the insulating effect that gets up to insulate.In addition, the needle shaft 10 being previously mentioned, needle tubing 30 and rear cover 40 The outer profile of the cross-sectional view of three is more excellent to justify, and certainly, is according to actual needs polygon, therefore is not limited.

Above disclosed is only the preferred embodiments of the utility model, cannot limit the utility model certainly with this Interest field, therefore equivalent variations made according to the claim of the utility model still fall within the model that the utility model is covered It encloses.

Claims (10)

1. a kind of spring probe, including needle shaft, spring and with the needle tubing of accommodating chamber, axis of the accommodating chamber along the needle shaft To running through the needle tubing forward and forming out the first accent, the needle shaft is interior and relatively described in the accommodating chamber is slidably placed on Needle tubing at least have an initial position and one along the needle shaft the compression position slid axially backward, the needle shaft is located at described The needle tubing is stretched out from first accent when initial position or is exposed to first accent, and the spring is located at the accommodating chamber Interior and axial direction arrangement along the needle shaft, the front end of the spring are abutted with the needle shaft elasticity, which is characterized in that the spring Formula probe further includes rear cover, and the rear cover includes the assembled portion being assembled on the needle tubing and wearing axially forward along the needle shaft Be placed in the socket part in the spring, one of the socket part and needle shaft offer socket slid chamber, the socket part with The other of needle shaft has the elastic arm of axial direction and the socket slid chamber face along the needle shaft；The elastic arm is in the needle It is located at the socket slid chamber with being squeezed and deformed in the cavity wall by the socket slid chamber when axis is in the initial position, it is described Cavity wall of the elastic arm also during the needle shaft switches to the compression position by the initial position with the socket slid chamber Sliding abuts；Alternatively, the elastic arm is during the needle shaft switches to the compression position by the initial position in by institute The cavity wall for stating socket slid chamber is inserted into the socket slid chamber and is slid with the cavity wall of the socket slid chamber with being squeezed and deformed It abuts；The rear end of the spring abuts with the needle tubing or assembled portion elasticity and the needle shaft is driven to slide onto the initial bit It sets.

2. spring probe according to claim 1, which is characterized in that the elastic arm, which extends, is convex to the socket sliding The cavity wall of chamber simultaneously is used to slide the bulge-structure abutted with the cavity wall, and the cavity wall of the socket slid chamber passes through protrusion described in pushing tow Structure is to squeeze the elastic arm deformation；Alternatively, the cavity wall of the socket slid chamber, which is extended, is convex to the elastic arm and for squeezing The bulge-structure of the elastic arm deformation.

3. spring probe according to claim 2, which is characterized in that circumferential cloth of the bulge-structure along the needle shaft It sets.

4. spring probe according to claim 3, which is characterized in that the bulge-structure is by the axle center of the excessively described needle shaft The outer profile that the plane of line is intercepted is curve or camber line.

5. spring probe according to claim 1, which is characterized in that the needle shaft and rear cover are respectively conductive structure, institute Stating needle tubing is conductive structure or insulation system.

6. spring probe according to claim 1, which is characterized in that the accommodating chamber also along the needle shaft it is axial to Run through the needle tubing afterwards and form out the second accent, the assembled portion is stretched out the needle tubing from second accent or is exposed to described Second accent.

7. spring probe according to claim 6, which is characterized in that the radial dimension of the assembled portion is greater than the set The radial dimension of socket part, the rear end of the spring are abutted with the front end surface elastic of the assembled portion.

8. spring probe according to claim 6, which is characterized in that the rear cover also includes after the assembled portion The external connection portion of side, the external connection portion stretch out the needle tubing from second accent.

9. spring probe according to claim 1, which is characterized in that the needle shaft include along the needle shaft it is axial by It front to back successively include needle section and auxiliary section, the auxiliary section and the accommodating chamber clearance fit, the radial direction of the auxiliary section Size is greater than the radial dimension of the needle section and the auxiliary section and the joint of needle section is made to form a shoulder, the shoulder It keeps out when the needle shaft is in the initial position with the needle tubing to stop the needle shaft to skid off first accent forward, The socket slid chamber or elastic arm are formed in the auxiliary section, and the front end of the spring and the rear end surface elastic of the auxiliary section support It connects.

10. spring probe according to claim 1, which is characterized in that the elastic arm at least two and along the needle shaft It is radially spaced separate, elastic arm deformation described in radial compression of the cavity wall along the needle shaft of the socket slid chamber.