KR200449392Y1 - Probe pin structure, and it's assembling - Google Patents

Abstract

The present invention is a connecting line probe of a measuring instrument that allows the measurement of important parameters such as internal impedance or loss angle by contacting the pin terminal with a measurement target such as a battery or an electrolytic capacitor. The present invention relates to a pin shape and a fastening structure of a connecting line probe for contacting and connecting a part to be measured to an input circuit of a measuring device.

When the object to be measured is easily worn by the excessive force applied to the pin coupling body of the probe, the locking grooves required when the pin coupling body is coupled with the pin pipe are easily worn, and the pin coupling body 110 is pin pin 112 due to its wear. There are frequent defects such as being inserted into the product and preventing it from coming out or breaking the spring.

According to the present invention, a pin rod is additionally formed on an end surface of the spring bearing of the pin assembly so that the pin rod end 16 of the pin body comes out of the pin pipe 112 when the object to be measured (probe) is directly connected to the pin holder 113. The pin holder 113 and the pin rod 14 are in mechanical contact with each other by touching the inner inner wall 21 and the locking groove Eliminate failures that can be caused by wear or spring breakage.

4-terminal network, probe, pin terminal head, pin pipe, pin assembly

Description

Probe pin structure, and it's assembling

In recent years, due to the increase in wired and wireless communication service networks, there are hundreds of battery facilities in each relay station as the primary backup power of communication network power. Also, hundreds of battery cells are connected in series at emergency power systems such as computer center computers or factory automation facilities. It is operating in a charged state. When some (at least one) of the battery cells connected in series are aged, they are unable to perform their functions during a power failure, and thus, many measuring devices for checking the aging state of the battery cells have been adopted.

In addition, the electrolytic capacitors connected to the DC booth of the power converter are parts whose endurance life varies depending on the use conditions (particularly the use temperature) and the endurance life is short. Therefore, it is essential to continuously measure the aging state of the electrolytic capacitor in order to secure operational reliability of the power converter.

As the electrolytic capacitor deteriorates, capacitance capacitance, equivalent series resistance (ESR), and leakage current value generally change. Since the ESR has a very low resistance, a specially designed connection probe can be used to make accurate measurements.

The present invention relates to the pin shape of the measurement connecting line (lead wire) probe of the portable measuring device for measuring the degree of aging of the object to be measured and the fastening structure thereof.

When measuring the characteristics of an object under test, such as a battery or an electrolytic capacitor, the internal impedance or resistance of the object under test is so small that the effect of contact resistance with probe terminals in contact with the object under test should be excluded. As a solution to this problem, the connector using a four-prong network is used.In order to minimize contact resistance with the terminal under test, press the pin terminal head of the connection probe to the part to be measured to apply more than a certain amount of force to the connector. Only the probe terminal and the part to be measured can be contacted firmly to obtain accurate measurement value.

As described above, since many battery strings and accumulators are used in the industrial field and have to be frequently measured periodically, the connection probe of the measuring instrument has a high frequency of use unlike the connection lead of the general measuring instrument.

As described above, the probe of the portable measuring device that checks the aging state of the object to be measured must be used in the field differently from that of other general measuring instruments, and because the force is applied more than necessary to the pin assembly of the connecting line probe every measurement. The pin body of the pin pipe is inserted into the pin pipe cannot be pulled out, or frequent failures such as the spring of the probe pin assembly is broken by excessive force.

FIG. 1 shows an example of a connector of a four-terminal network, which is widely used in recent years, and an external shape of a pin assembly 110 thereof. The pin holder 113 of the connecting line probe is inserted into the head of the probe formed of a plastic resin such as ABS, and the pin assembly 110 is inserted into the pin holder 113, as shown in FIG. As shown in the drawing, a lead wire 114 is connected to an end portion of the head portion which is an easy connection portion of the pin holder 113.

The pin terminal head 11 of the pin assembly 110 has a pointed shape so that the pin terminal head 11 can be reliably contacted when contacting the measurement site of the object to be measured, and the pin assembly 110 is connected to the pin pipe 112. Since it is integrated with the spring 111 assembled in the inside is inserted into the pin holder 113, when the pin assembly 110 is worn, only the pin assembly 110 can be easily replaced.

Also, When the pin terminal head 11 portion of the probe comes into contact with the portion to be measured, the pin body is pressed and enters the inside of the pin pipe 112 so that the force generated by the elasticity (restoration force) of the spring 111 is measured. Even if the force pressing the site to be measured changes in the middle, the pointed end of the pin terminal head 11 is surely in contact with the object to be measured.

The pin waist 12 is designed so that its outer diameter is slightly smaller than the pin terminal head 11 and the spring support 13, and the locking groove (㉮) generated by bending the surface of the pin pipe 112 in a ring shape is provided. Since it is located in the pin waist (12) The pin assembly 110 may have a stopper function that allows the pin body to move within a limited distance without exiting the pin pipe 112.

In addition, when a pressing force is applied to bring the probe pin terminal head 11 into contact with the portion to be measured, a wall in which the locking groove (㉮) is formed where the pin waist 12 and the pin terminal head 11 are in contact with each other. (Barrier) so that the pin body is no longer inserted into the pin pipe (112).

On the other hand, the probe of the portable measuring device to check the aging state of the object to be measured must be used in the field, unlike the other general measuring instruments, and the locking groove (가 mark) by the excessive force applied to the pin assembly 110 every measurement With this pin waist (12) Since it frequently hits the wall formed at the connection portion of the pin terminal head 11, the locking groove (㉮) can be easily worn and eventually the pin assembly 110 is inserted into the pin pipe 112 to prevent it from coming out. Or defects such that the spring 111 is broken by excessive force are frequently generated.

The present invention has a structure such that the pin rod 14 is further formed at the end of the spring support 13 to which the spring 111 of the pin assembly 110 is connected, so that the locking groove (㉮) A failure that may be caused by wear or breakage of the spring 111 may be eliminated.

Figure 2 shows a cross-sectional structure of a conventional pin assembly is assembled.

3 is a perspective view of a pin body which is a kernel component of the pin assembly 110 as an embodiment of the present invention.

The pin assembly 110 of the present invention is composed of the pin body and the pin pipe 112, the pin body is also the pin terminal head 11, pin waist 12, spring support 13, and pin rod 14 It consists of the corresponding parts.

Since the outer diameter of the pin waist 12 is slightly smaller than the outer diameter of the pin terminal head 11 and the spring support 13, the pin body is inserted into the pin pipe 112 to bend the surface of the pin pipe 112 into a ring shape. Once assembled by the formed locking groove (㉮ mark), the pin body is prevented from exiting from the pin assembly 110 by the stopper role of the locking groove (㉮ mark).

The present invention is to improve the structure of the pin assembly 110 of the probe so that the locking groove is not worn by further forming the pin rod 14 on the end surface of the spring support 13 of the pin body.

That is, by improving the structure as described above, even when the pin assembly 110 of the connecting line probe is pressed to the maximum to contact the object to be measured, the pin rod end 16, which is the end of the pin rod 14, is held by the pin holder ( The locking groove of the pin pipe 112 is worn because the locking groove formed in the pin pipe 112 is not directly in contact with the end wall of the pin terminal head 11 because the inner wall surface 21 of the 113 is first touched. It can prevent damage.

In addition, since the excessive force applied to the pin assembly 110 at the time of taking the object to be measured (probe) is not transmitted to the spring 111 by the pin rod 14 is absorbed to the pin holder 113 side, Even in the use environment of the bad condition as described above, the connection pin probe coupling body 110 is inserted into the locking groove (㉮ mark) of the pin pipe 112 so that it can not be pulled out or the spring of the probe pin coupling body 112 is not broken, etc. Can prevent the malfunction.

The pin coupling body 110 of the present invention is formed by additionally forming a pin rod 14 on the spring support 13 of the pin body to be assembled into the spring 111, so that the probe pin in the use environment of the bad conditions as described above It is possible to minimize the failure or wear, such as the body is inserted into the locking groove of the pin pipe 112 can not be pulled out or the spring is not damaged by excessive force. When the pin terminal head 11 contacts the object to be measured, the pin terminal end 16, which is the end of the pin body, contacts the inner wall surface 21 of the pin holder 113, thereby contacting the pin terminal head. 11 can be electrically connected (contacted) with the lead wire 114 connected to the pin holder 113 completely, and the measurement signal obtained from the object under test can be transmitted to the lead wire 114 without contact resistance. It becomes possible.

In addition, since the spring 111 is not eccentric in the pinpipe due to the action of the pin rod 14, friction between the spring 111 and the inner surface of the pinpipe 112 may be reduced when it is operated.

Figure 3 shows a perspective view of the pin body as a component of the pin assembly 110 as an embodiment of the present invention.

4 shows the structure of the pin body.
5 shows the pin assembly 110 is coupled to the pin pipe 112 is inserted into the pin holder.
The pin assembly 110 is composed of a pin body and a pin pipe 112, which is a kernel component, the pin body 11, the pin waist 12, the spring support 13, and the pin rod 14 It is configured to include). The pin rod 14 formed on the end surface of the spring support 13 of the pin body is inserted into the center of the spring 111, and the pin body is inserted into the pin pipe 112 together with the spring 111 and then the pin pipe ( Curling the end of the 112 to the spring (Curling) to configure the pin assembly 110 of the probe.

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Depending on the designer's intention, the pin rod 14 may be made as a separate part. In this case, the pin rod 15 is formed at the center point of the upper surface of the spring support 13 of the pin body and is opposed to the upper surface. (14) By forming a triangular circular hole corresponding to the pin port 15 on the surface, when the pin body and the pin rod 14 is inserted into the pin pipe 112, the pin port 15 is the triangular It is interlocked with a circular hole to prevent eccentricity between them.

In addition, the pin rod (14) formed by being connected to the spring support 13 is designed to be slightly smaller than the inner diameter of the spring 111 so that the outer diameter thereof to secure the clearance between the spring 111, the spring support 13 The outer diameter of the adjacent portion) is designed to be approximately equal to the inner diameter of the spring 111. Therefore, the pin rod 14 is accurately inserted into the center portion of the spring 111 by the base portion of the outer diameter of the pin rod 14 formed to be substantially the same as the inner diameter of the spring 111, and the portion that serves as the foundation is formed with the spring 111. Since it can be fixed and is always positioned in the center during contraction or expansion, the friction between the spring 111 and the inner surface of the pinpipe can be reduced.

The probe pin fastening structure of the present invention will be described.

The outer diameter of the pin waist 12 is designed to have a dimension smaller than the inner diameter of the pin pipe 112 by the height of the locking groove formed in the inner direction of the pin pipe 112 (usually the height of the locking groove is approximately equal to the thickness of the pin pipe). It is. Insert the spring 111 into the pin rod 14 of the pin body and insert it into the pin pipe 112, but the pin waist is adjacent to the spring support 13 in the state where the pin body is in a normal position ( A ring-shaped locking groove (㉮ mark) is formed while turning the pin pipe 112 on the surface of the pin pipe 112 corresponding to the end of 12).

The locking groove thus generated is located at the end of the pin waist 12 corresponding to the adjacent portion of the spring support 13 when the pin body is maximally out of the pin body and the pin body is located at a predetermined position in the pin pipe 112. It will be able to play a role that does not fall. In the state where the pin body is pressed to the maximum, the locking groove (㉮) is placed in the pin waist region close to the pin terminal head 11.

5 shows a cross-sectional view of a steady state in which the pin assembly of the present invention is coupled from a pin holder, and FIG. 6 shows a cross-sectional view of the pin assembly of the present invention completely inserted into a pin holder.

As such, the shape of the probe pin of the present invention has a structure in which a pin rod 14 is additionally formed at an end surface of the spring support 13 to which the spring 111 is connected to the pin assembly 110, and the pin rod 14. It is possible to insert the pin coupling body 110 to the maximum until the pin rod end 16 of the pin holder 113 is in contact with the inner wall portion 21 of the pin holder 113.

In addition, the shape of the probe pin of the present invention, the pin rod end 16 of the pin rod 14, even if the pin assembly 110 of the connecting line probe is pressed and inserted with maximum force to contact the site to be measured It exits the pinpipe 112 and comes into contact with the inner wall surface 21 of the pin holder first, and the pin body can be electrically contacted with the lead wire.

Therefore, since the pin body is no longer inserted, the locking groove of the pin pipe 112 does not come into contact with the end portion of the pin terminal head in the pin waist 12, so even in the use environment of the bad condition as described above. It is possible to prevent the wear of the locking groove (㉮) and to minimize the failure or wear, such as the pin coupling body 110 is inserted into the pin pipe 112 to prevent the escape.

In addition, since the outer diameter of the pin rod 14 where the pin rod 14 and the spring support 13 are adjacent to each other is substantially the same as the inner diameter of the spring 111, the pin rod 14 is inserted into the center of the spring 111 to be accurately inserted into the spring ( It can be fixed to the 111, and thus the spring 111 is always located in the center at the time of contraction or expansion can reduce the mutual friction with the spring 111 with the inner surface of the pin pipe (112).

1 is an external view of the pin assembly and the pin pipe of the connector probe

2 is a cross-sectional view of a conventional fin assembly

3 is a sash diagram of a pin body that is a pin assembly part of the present invention

Figure 4 is a cross-sectional view of the pin body which is a pin assembly part of the present invention

Figure 5 is a cross-sectional view of the normal state in which the pin assembly of the present invention is inserted into the pin holder

Figure 6 is a cross-sectional view of a state in which the pin assembly of the present invention completely entered the pin holder

 Explanation of symbols on the main parts of the drawings

11; Pin terminal head 12; Pin waist 13; Spring bearing 14; Pin rod 15; Pinport
16; Pin bar end 21; Inner wall

 110; Pin conjugate 111; Spring 112; Pinpipe 113; Pinholder 114; Lead wire

Claims (4)

Pin terminal head; A pin waist connected in series with the pin terminal head and having a radius smaller than that of the pin terminal head; A spring bearing connected in series with the pin waist and having a radius greater than that of the pin waist; And In the probe comprising a pin body connected in series with the spring support and including a pin rod installed in the inner diameter of the spring, A pin coupler coupled to the spring to be inserted into the pin pipe having both ends opened, and a pin coupling body assembled with the pin body by curling an end edge of the pin pipe so that the spring is caught; And a pin holder in which the pin assembly is inserted and fixed, and only the tip of the pin rod comes out of the pin pipe and touches an inner wall thereof to reduce contact resistance. delete delete Pin terminal head; A pin waist connected in series with the pin terminal head and having a radius smaller than that of the pin terminal head; A spring bearing connected in line with the pin waist and having a radius greater than the pin waist and including a pin port at a center point of an upper surface thereof; And A pin body joined to the pin port of the spring support and including a hole for engaging the pin port, the pin body including a pin rod installed in the inner diameter of the spring; The pin rod is coupled to the spring is inserted into the pin pipe, and the pin coupling body assembled with the pin body by curling the end edge of the pin pipe so that the spring is caught; And a pin holder having an inner wall portion in which the pin assembly is inserted and fixed and the pin rod ends contact with the object to be measured.

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