TWM568970U - Switch pin assembly and testing equipment including thereof - Google Patents

Abstract

A switch pin assembly includes a first housing, a first conductive member, an insulating member, a second housing, and an abutting member. The first housing has a first opening and a second opening opposite to the first opening. The first conductive member is partially inserted in the first housing through the first opening. The insulating member is connected to the first housing through the insulating member. The second housing is pluggably sleeved in the first housing through the second opening. The abutting member is partially inserted in the second housing, in contact with the second housing, and configured to move relative to the second housing to selectively electrically conduct or separate the first conductive member.

Description

Switch needle assembly and testing device therewith

The present invention relates to a switch pin assembly, and more particularly to a test device including a switch pin assembly.

In the case of electronic products, the product must be electrically functionally tested after the assembly is completed to ensure the functional integrity of the manufactured electronics. At the same time, classification by electrical test results can be used as a basis for evaluation of different grades of products. Taking a semiconductor test process as an example, after the device to be tested (for example, a packaged IC) is sent to a tester (for example, a logic IC tester, a memory IC tester, a hybrid IC tester), the tester It can perform detailed control on the test program tailored for the component to be tested, issue the electrical signal required by the component to be tested, and accept the electrical signal responded by the component to be tested, so as to judge the product electrical test result. .

In general, there is often an interface problem between the device under test and the test machine that cannot be directly connected. Therefore, it is necessary to pass a conversion interface-electric test fixture to allow the test operation to proceed smoothly. Further, the electrical test fixture is a way of connecting the test joint of the test machine to the pin of the component to be tested, such as a probe, as an electrical signal transmission bridge.

At present, in the process of placing the circuit board to be tested on the carrier board of the electrical measuring fixture, in order to ensure as much as possible that the circuit board to be tested and the carrier board can be smoothly combined without lifting, there is a conventional testing machine in which A distance sensor with a measurable distance is set on the track of the test machine, so that the detected height difference is used to determine whether the positioning is reached. However, the distance sensor involves a more precise distance measurement setting, so the adjustment is not easy and the stability during use is not good. In addition, in order to achieve the above object, there is also a conventional test machine in which micro-switches are respectively installed at the four corners of the electrical test fixture carrier board. However, the micro-switches are not easy to install, and each electrical test fixture needs to be installed, and cannot be adapted. Use different boards to be tested.

In accordance with an embodiment of the present disclosure, a switch needle assembly includes a first housing, a first conductive member, an insulator, a second housing, and an abutting member. The first housing has opposing first and second openings. The first conductive member is partially inserted into the first housing through the first opening of the first housing. The first conductive member of the insulating member is connected to the first housing via an insulating member. The second housing is detachably sleeved on the first housing via the second opening of the first housing. The abutting portion is inserted into the second housing to contact the second housing and configured to selectively electrically or electrically separate the first conductive member from moving relative to the second housing.

In one or more embodiments of the present disclosure, the switch needle assembly further includes a first elastic member. The first elastic member is located in the second housing, and is connected between the end of the second housing adjacent to the first opening of the first housing and the abutting member, and is wound around the abutting member.

In one or more embodiments of the present disclosure, the switch needle assembly is more A second elastic member is included. The second elastic member is located in the second housing. The abutting member includes a first abutting section and a second abutting section. The first elastic member is wound around the second abutting portion of the abutting member. The second elastic member is coupled between the first abutting section and the second abutting section of the abutting member.

In one or more embodiments of the present disclosure, the elastic modulus of the second elastic member is different from the elastic modulus of the first elastic member.

In one or more embodiments of the present disclosure, the first abutting section of the abutting member has a slot. The second abutting portion of the abutting member is slidably sleeved in the slot of the first abutting section. The second elastic member is located in the slot of the first abutting section.

In one or more embodiments of the present disclosure, the second abutment section of the abutting member includes a slider. The slider of the second abutting section slidably engages the inner wall of the slot of the first abutting section.

In one or more embodiments of the present disclosure, the second housing includes a body portion and a stop portion. The body portion of the second housing is sleeved in the first housing. The stopper of the second housing protrudes from the body portion and contacts the end surface of the first housing adjacent to the second opening.

In one or more embodiments of the present disclosure, the second housing includes a body portion, an insulating portion, and a second conductive member. The insulating portion of the second housing is located at an end of the body portion facing the first conductive member. The second conductive member is disposed through the insulating portion of the second housing and partially located in the body portion of the second housing. The abutting member is configured to selectively electrically or electrically separate the first conductive member via the second conductive member of the second housing by moving relative to the second housing.

In one or more embodiments of the present disclosure, the detecting device includes Lower fixture, upper fixture and switch needle assembly. The switch needle assembly is disposed on the lower fixture. The second opening of the first housing of the switch needle assembly faces the upper fixture.

In one or more embodiments of the present disclosure, the detection device includes a needle plate and a carrier. The carrier plate is placed on the lower fixture. The needle plate is disposed between the carrier plate and the lower jig. The carrier plate is configured to movably engage the needle plate.

In one or more embodiments of the present disclosure, the abutting member of the switch pin is flush with the end of the first opening.

In summary, when the switch pin in the switch pin assembly is damaged, the switch pin assembly can be repaired only by replacing the switch pin, without replacing the entire set of switch pin assemblies, thereby reducing the maintenance cost of the switch pin assembly. . Moreover, during the maintenance of the switch needle, the needle sleeve can maintain the connection with the electrode, thereby avoiding an additional disassembly step during the maintenance process of the switch needle assembly, thereby saving assembly time of the switch needle assembly. And reduce the labor cost in the assembly process.

In addition, the switch pin assembly includes elastic members having different elastic coefficients, and a plurality of different strokes can be distinguished during the operation of the switch needle assembly. For example, the first stroke of the switch pin assembly ensures that when the board is placed over the lower fixture, the switch pin assembly can be compressed by the board to detect if the board is positioned or if a rocker has occurred. The second stroke of the switch needle assembly can continue to cause the switch needle assembly to be compressed during movement of the carrier relative to the needle plate, thereby providing space for the carrier to move toward the needle plate.

1‧‧‧Testing equipment

12‧‧‧Switch needle assembly

14‧‧‧ needle sets

18‧‧‧Switch needle

19, 19’‧‧‧ boards

102‧‧‧The lower fixture

103‧‧‧ needle board

104‧‧‧Upper fixture

105‧‧‧ Carrier Board

140‧‧‧First housing

141‧‧‧ 垣

142, 144, 1460, 1462, 1800a, 1800b‧‧

143, 1800c‧‧‧ accommodating space

145‧‧‧ end face

146‧‧‧Insulation

147, 184, 186‧‧‧ elastic parts

147a, 184a, 186a‧‧‧ first end

147b, 184b, 186b‧‧‧ second end

148, 149, 1806‧‧‧ conductive parts

148a‧‧‧End

180‧‧‧second housing

182‧‧‧After the top piece

190‧‧‧Positioning holes

1040‧‧‧Licence space

1052, 1052a, 1052b‧‧‧ guide column

1490‧‧‧conductive column

1492, 1822b‧‧‧ head

1800‧‧‧ Body Department

1802‧‧‧stops

1804‧‧‧Insulation

1804a‧‧‧Insulated body

1804b‧‧‧through hole

1806a‧‧‧conductive column

1806b‧‧‧stops

1822‧‧‧first summit

1822a‧‧‧Top pillar

1822c‧‧‧Slot

1822d‧‧‧ inner wall

1824‧‧‧second summit

1824a‧‧‧First section

1824b‧‧‧ Slider

1824c‧‧‧second section

D1, D2, L1, L2, L2'‧‧‧ length

H1, H2, H3‧‧‧ height

Z‧‧‧ direction

The above and other objects, features, advantages and advantages of the present disclosure. The embodiment can be more clearly understood. The description of the drawings is as follows: FIG. 1 is a side view of a detecting device according to an embodiment of the present disclosure, wherein the lower fixture of the detecting device is provided with a circuit board.

FIG. 2 is a perspective view of a switch needle assembly according to an embodiment of the present disclosure.

3A, 3B, and 3C are respectively a perspective view, an exploded view, and a cross-sectional view of the needle sleeve of the switch needle assembly according to an embodiment of the present disclosure.

4A, 4B, and 4C are respectively a perspective view, an exploded view, and a cross-sectional view of a switch needle in a switch needle assembly according to an embodiment of the present disclosure.

5A, 5B, and 5C are cross-sectional views of the switch needle assembly according to an embodiment of the present disclosure, respectively, during different operations.

6A, 6B, and 6D are respectively side views of the detecting device according to an embodiment of the present disclosure, wherein in the 6B and 6D, the lower fixture of the detecting device is set. There is a circuit board.

FIG. 6C is a side view showing the detecting device according to an embodiment of the present disclosure in an operation step corresponding to FIG. 6B, wherein the circuit board is in a state of a rocker.

The following description will provide many different embodiments or embodiments to implement the subject matter of the present disclosure. Specific examples of components or arrangements will be discussed below to simplify the disclosure. Of course, these descriptions are only partial examples and the disclosure is not limited thereto. For example, the first feature is formed on or above the second feature, and the description includes not only the embodiment in which the first feature is in direct contact with the second feature, but also other features formed between the first feature and the second feature, and In this case the first special An embodiment that does not directly contact the second feature. In addition, the disclosure may repeat the label or text in different examples. The purpose of the repetition is to simplify and clarify the description, rather than to define the different embodiments and the relationships between the configurations.

In addition, spatial relative terms such as "below", "below", "below", "above", "above" and other similar terms are used herein to facilitate the description of one element or feature and another element or The relationship of features. Spatially relative terms encompasses other orientations of the device in use or operation, in addition to the orientation depicted in the figures. That is, when the orientation of the device is different from the schema (rotated 90 degrees or at other orientations), the spatially relative terms used herein may also be interpreted accordingly.

Please refer to Figure 1. FIG. 1 is a side view of a detecting device 1 according to an embodiment of the present disclosure. As shown in the figure, in the present embodiment, the detecting device 1 includes a lower jig 102, a needle plate 103, a carrier 105, an upper jig 104, a power module (not shown), and a switch pin assembly 12, wherein the detecting device A circuit board 19 is disposed above the lower fixture 102 of 1. In order to clearly show the switch needle assembly 12, the carrier 105 in Fig. 1 is indicated by a broken line. The structure, function, and connection relationship between the components included in the detecting device 1 will be described in detail below.

As shown in FIG. 1, the power module is operatively coupled to the upper fixture 104 to drive the upper jig 104 to move in the direction Z relative to the lower jig 102. In the present embodiment, the direction Z is defined as the arrangement direction of the lower jig 102, the needle plate 103, and the carrier 105. In practical applications, the power module can use the combination of the motor and the belt, the combination of the motor and the screw, the combination of the pneumatic cylinder and the piston rod to drive the movement of the upper fixture 104 relative to the lower fixture 102, but the creation is Not limited to this. In the present embodiment, the switch needle assembly 12 is disposed on the lower jig 102 facing One side of the upper fixture 104, but this case is not limited to this. In the present embodiment, the upper jig 104 has a yield space 1040. The yield space 1040 of the upper jig 104 has an opening that faces the guide post 1052 on the carrier 105. The yield space 1040 of the upper jig 104 is configured to accommodate the post 1052 of the carrier 105 via the aforementioned opening.

In the present embodiment, the switch pin assembly 12 can be used to detect whether the circuit board 19 placed above the lower jig 102 is disposed through the plurality of guide posts 1052 on the carrier 105. Alternatively, the switch pin assembly 12 can also be used to detect if a circuit board 19 placed over the lower jig 102 has a rocker. Thereby, the switch pin assembly 12 can determine whether the circuit board 19 has been positioned for electrical detection of the subsequent circuit board 19. In some embodiments, the switch needle assembly 12 can also be mounted on a pick-and-place robot arm (not shown) to be sensed by a rocker (eg, a circuit board).

In the first drawing, the needle plate 103 is disposed on the lower jig 102, and includes a plate body (not shown) and a plurality of probes (not shown) provided on the plate body. The carrier 105 is positioned above the needle plate 103 and is configured to move relative to the needle plate 103 in the direction Z to engage the needle plate 103 (see FIGS. 6A-6D). The material of the plate body of the needle plate 103 may include glass fiber, but the present invention is not limited thereto. The probe of the needle plate 103 is electrically detected on the circuit board 19 through the carrier 105. The plurality of probes of the needle plate 103 are located in a space surrounded by the plurality of guide posts 1052 of the carrier 105. When the circuit board 19 is placed over the lower fixture 102, the guide post 1052 of the carrier 105 is configured to be inserted into the positioning hole 190 of the circuit board 19 to position the circuit board 19 such that the probe of the needle board 103 can be placed on the circuit board 19. The conductive features are electrically detected.

Please refer to Figure 2. FIG. 2 illustrates an embodiment according to the present disclosure. A perspective view of the switch needle assembly 12. As shown in FIG. 2, in the present embodiment, the switch needle unit 12 includes a needle cover 14 and a switch needle 18. The needle sleeve 14 of the switch needle assembly 12 includes an insulator 146, a first housing 140 and a conductive member 148 that are connected to each other via an insulator 146. The conductive member 148 of the needle sleeve 14 is connected to a first electrode (not shown). The first housing 140 of the needle sleeve 14 is connected to a second electrode (not shown). For example, the first and second electrodes may be conductive lines, but the present invention is not limited thereto. The first electrode and the second electrode are configured to be electrically connected by the switch pin 18. The first housing 140 of the needle guard 14 has opposing openings 142, 144. The first housing 140 of the needle guard 14 has an end surface 145 that abuts the opening 144 (see Figure 3C). In the present embodiment, the switch needle 18 is insertably inserted into the first housing 140 of the needle sleeve 14 through the opening 144 of the first housing 140 of the needle sleeve 14 and at least contacts the first portion of the needle sleeve 14 An end surface 145 of the housing 140.

Thereby, when the switch needle 18 in the switch needle assembly 12 is damaged, the switch needle assembly 12 can be repaired only by replacing the switch needle 18 without replacing the entire set of switch needle assemblies 12, thereby reducing the switch needle assembly. 12 maintenance costs. Moreover, during the maintenance of the switch needle 18, the needle sleeve 14 can maintain a connection with the first electrode and the second electrode (not shown), thereby avoiding additional processing during the maintenance of the switch needle assembly 12. The disassembly step further saves assembly time of the switch needle assembly 12 and reduces labor costs during assembly.

Further, please refer to FIG. 3A, FIG. 3B, and FIG. 3C. FIG. 3A is a perspective view of the needle sleeve 14 of the switch needle assembly 12 according to an embodiment of the present disclosure. Figure 3B is an exploded view of the structure shown in Figure 3A. Figure 3C is a cross-sectional view of the structure shown in Figure 3A taken along line C-C. The details will be explained below The structure, function, and connection relationship between the components included in the needle hub 14 of the switch needle assembly 12.

As shown in FIG. 3A, FIG. 3B, and FIG. 3C, the first housing 140 of the needle cover 14 further includes a dam 141 and further has an accommodation space 143 (see FIG. 3C). The dam 141 of the first housing 140 surrounds the opening 144 and forms a stepped structure on the outer surface of the first housing 140. The end face 145 of the first housing 140 (see FIG. 3C) is a dam 141 that abuts the surface of the opening 144. The accommodating space 143 of the first housing 140 has a long slot and communicates with the outside of the first housing 140 through the openings 142, 144. In the present embodiment, the material of the first housing 140 is a conductive material. For example, the material of the first housing 140 may include a copper-zinc alloy, but the present invention is not limited thereto.

In some embodiments, the insulating member 146 is partially sleeved from the opening 142 to the first housing 140. In the present embodiment, the insulating member 146 has a long tubular shape and extends from the opening 142 to be located in the accommodating space 143 of the first housing 140 (see FIG. 3C). Insulator 146 has opposite openings 1460, 1462 (see Figure 3C). In the present embodiment, the opening 1462 of the insulating member 146 is located in the accommodating space 143 of the first housing 140, and the opening 1460 is located outside the accommodating space 143. In some embodiments, the openings 1460 and 1462 of the insulating member 146 are located in the accommodating space 143 of the first housing 140. In the present embodiment, the outer surface of the insulating member 146 contacts the inner surface of the first housing 140. The material of the insulating member 146 is an insulating material. For example, the material of the insulating member 146 may include polyformaldehyde (POM), but the present invention is not limited thereto.

In some embodiments, the conductive member 148 of the needle sleeve 14 passes through the An opening 142 of the housing 140 is partially inserted into the first housing 140. In the present embodiment, the conductive member 148 of the sleeve 14 has a long tubular shape, a portion of which is sleeved on the insulating member 146 and is connected to the first housing 140 via the insulating member 146. In contrast, another portion of the conductive member 148 protrudes from the opening 1460 of the insulator 146 outside of the first housing 140. Therefore, the conductive member 148 and the first housing 140 are electrically isolated from each other by the insulating member 146. In the present embodiment, the conductive member 148 of the needle sleeve 14 has an end portion 148a that is away from the first housing 140. The needle sleeve 14 is connected to the first electrode (not shown) by the end portion 148a of the conductive member 148, and the first housing 140 of the needle sleeve 14 is connected to the second electrode (not shown) by a lead wire.

In the present embodiment, the conductive member 148 of the needle sleeve 14 is made of a conductive material. For example, the material of the first casing 140 may include nickel (Nickle, Ni) and is subjected to gold plating processing, but the present invention is not limited thereto.

In FIG. 3C, the needle sleeve 14 further includes an elastic member 147 and a conductive member 149. The elastic member 147 of the needle sleeve 14 is disposed in the conductive member 148 and includes an opposite first end portion 147a and a second end portion 147b. The first end portion 147a of the elastic member 147 away from the first housing 140 is coupled to the inner wall of the conductive member 148. The elastic member 147 is a free end adjacent to the second end portion 147b of the first housing 140, and is configured to move away from or near the first housing 140 with respect to the conductive member 148, thereby compressing or resetting the elastic member 147.

In the present embodiment, the conductive member 149 of the needle sleeve 14 is located on a side of the elastic member 147 adjacent to the first housing 140. Specifically, the conductive member 149 includes a connected conductive post 1490 and a head 1492. The conductive post 1490 of the conductive member 149 is disposed in the conductive member 148 and contacts the elastic member 147. In some embodiments, the conductive post 1490 of the conductive member 149 contacts the inside of the conductive member 148. wall.

When the switch pin 18 as shown in FIG. 4A is inserted into the first housing 140 of the needle cover 14, the switch pin 18 contacts the head 1492 of the conductive member 149 and is pressed against the conductive member 149 to cause the conductive post 1490 to compress the elastic member 147. . At this time, the elastic member 147 stores energy by being compressed, and applies a restoring force to the conductive member 149, so that the conductive member 149 abuts the switch needle 18 to ensure that the conductive member 149 can be in contact with the switch needle 18.

In the embodiment, the elastic member 147 is a spring, but the present invention is not limited thereto. In other embodiments, any member having the ability to elastically deform or have a restoring force after elastic deformation can be applied to the elastic member 147 of the present invention. In some embodiments, the material of the elastic member 147 comprises an insulating material or a material having a low conductivity. Optionally, the material of the elastic member 147 may also include a conductive material. For example, the material of the elastic member 147 may comprise an alloy steel having a chromium content of from about 10% to about 30%. In contrast, the material of the elastic member 147 may also include a steel wire (SWP) and is subjected to gold plating.

In the present embodiment, the head 1492 of the conductive member 149 is a sawtooth head, but the present invention is not limited thereto. In other embodiments, any suitable head shape can be used in this case. For example, the head 1492 of the conductive member 149 can include a star head, a round head, an umbrella head, a cup head, a pointed end, a flat head, a crown head, or any suitable head shape.

Please refer to FIG. 4A, FIG. 4B, and FIG. 4C. FIG. 4A is a perspective view of the switch needle 18 in the switch needle assembly 12 according to an embodiment of the present disclosure. Figure 4B is an exploded view of the structure shown in Figure 4A. Figure 4C is a cross-sectional view of the structure shown in Figure 4A taken along line C'-C'. As shown in Figure 4A, Figure 4B, As shown in FIG. 4C, in the present embodiment, the switch needle 18 of the switch needle assembly 12 includes a second housing 180, an abutting member 182, and elastic members 184, 186 (see FIGS. 4A and 4B). Further, the second housing 180 of the switch pin 18 includes a body portion 1800, a stopper portion 1802, an insulating portion 1804, and a conductive member 1806. The structure, function, and connection relationship between the components included in the switch pin 18 of the switch pin assembly 12 will be described in detail below.

In FIGS. 4A, 4B, and 4C, the body portion 1800 of the second housing 180 is configured to be insertably inserted through the opening 144 of the first housing 140 of the needle cover 14 as shown in FIG. 3C. The sleeve is sleeved on the first housing 140 and located in the accommodating space 143 of the first housing 140 (see FIG. 3C). The body portion 1800 of the second housing 180 has openings 1800a, 1800b (see FIG. 4B) and an accommodation space 1800c (see FIG. 4C). The accommodating space 1800c of the second housing 180 has a long slot and communicates with the outside of the second housing 180 through the openings 1800a, 1800b.

In the present embodiment, the stopper portion 1802 of the second casing 180 protrudes outward from the outer edge of the body portion 1800 and is disposed to contact the end surface 145 of the needle sleeve 14 as shown in FIG. 3C. The switch needle 18 is supported by the stopper 141 of the first casing 140 of the needle cover 14 as shown in FIG. 3C by the stopper portion 1802 of the second casing 180. In addition, the second housing 180 of the switch needle 18 is electrically connected to the first housing 140 of the needle sleeve 14 by the blocking portion 1802 .

In the present embodiment, the insulating portion 1804 of the second housing 180 is located at one end of the body portion 1800 facing the conductive member 148. Specifically, as shown in FIGS. 4A and 4B, the insulating portion 1804 includes an insulative housing 1804a and a through hole 1804b penetrating the insulative housing 1804a. The insulative housing 1804a is partially sleeved from the opening 1800a of the body portion 1800 to the body portion 1800, and is located at the second portion. The housing 180 is in the accommodating space 1800c. In the present embodiment, the outer surface of the insulative housing 1804a contacts the inner surface of the body portion 1800. The material of the insulating portion 1804 is an insulating material. For example, the material of the insulating portion 1804 may include polyformaldehyde (POM), but the present invention is not limited thereto.

As shown in FIGS. 4A and 4B, the conductive member 1806 of the switch pin 18 includes the conductive posts 1806a and the stopper 1806b that are connected. The conductive post 1806a of the conductive member 1806 is partially inserted into the insulating portion 1804 via the through hole 1804b of the insulating portion 1804. In contrast, another portion of the conductive post 1806a protrudes from the insulating portion 1804 and is located outside the accommodating space 1800c of the body portion 1800 of the second housing 180. The stopper 1806b of the conductive member 1806 protrudes from the conductive post 1806a toward the inner wall of the body portion 1800 and contacts the surface of the insulating portion 1804 toward the opening 1800b. In the present embodiment, the stopper portion 1806b of the conductive member 1806 is separated from the inner wall of the body portion 1800. That is, the conductive member 1806 is connected to the body portion 1800 via the insulating portion 1804, and is electrically isolated from the body portion 1800.

As shown in FIGS. 4B and 4C, the abutting member 182 of the switch pin 18 includes a first abutting section 1822 and a second abutting section 1824 that are configured to be movable relative to each other. In the present embodiment, the first abutting section 1822 of the abutting member 182 includes abutting abutment posts 1822a and a head 1822b and has a slot 1822c. The slot 1822c of the abutting member 182 is disposed at an end of the abutment post 1822a away from the head 1822b and extends toward the head 1822b.

In FIGS. 4B and 4C, the second abutting section 1824 of the abutting member 182 includes a first section 1824a, a slider 1824b, and a second section 1824c that are sequentially connected. In the present embodiment, the second abutting section 1824 The first section 1824a and the second section 1824c have a long columnar shape. The first section 1824a is configured as a pointed structure with respect to one end of the slider 1824b, but the present invention is not limited thereto. The outer diameter of the slider 1824b of the second abutting section 1824 is greater than the outer diameter of the first section 1824a and the second section 1824c.

In the present embodiment, the abutting pole 1822 a of the first abutting section 1822 is partially inserted into the body portion 1800 of the second casing 180 via the opening 1800 b of the second casing 180 . The abutment post 1822a of the first abutment section 1822 contacts the inner wall of the body portion 1800 of the second housing 180 and is configured to move relative to the body portion 1800 to be adjacent to or away from the conductive member 1806. The second abutting portion 1824 of the abutting member 182 is slidably sleeved in the slot 1822c of the first abutting portion 1822.

In particular, the slider 1824b of the second abutment section 1824 of the abutment member 182 slidably engages the inner wall 1822d of the slot 1822c of the first abutment section 1822 (see FIG. 4C). In other words, the first abutting section 1822 is movably contacted with the second abutting section 1824 and the body portion 1800 of the second housing 180, respectively, and is located at the second abutting section 1824 and the body portion of the second housing 180. Between 1800. In the present embodiment, the material of the abutting member 182 is a conductive material. For example, the material of the abutting member 182 may include a copper-zinc alloy, but the present invention is not limited thereto.

In FIG. 4B and FIG. 4C, the elastic member 184 of the switch needle 18 is located in the accommodating space 1800c of the second housing 180, and is closer to the needle sleeve 14 as shown in FIG. 3C than the elastic member 186. One end of an opening 142 of a housing 140. The elastic member 184 of the switch pin 18 is located between the slider 1824b of the second abutting section 1824 and the conductive member 1806 of the second housing 180, and is wound around the second The first section 1824a of the top section 1824 is reached. The resilient member 184 includes a first end 184a and a second end 184b. In the present embodiment, the first end portion 184a of the elastic member 184 is connected to the conductive member 1806 of the second housing 180, and the second end portion 184b is coupled to the slider 1824b of the abutting member 182, but this is not the case. limit.

In some embodiments, the first end 184a of the resilient member 184 can be coupled to the end of the second housing 180 proximate the opening 1800a. In some embodiments, the second end 184b of the resilient member 184 can be coupled to any location on the second abutment segment 1824. Thereby, when the first abutment section 1822 is configured to move relative to the second housing 180, the elastic member 184 is compressed or reset. With the first abutment section 1822 moving closer to the second abutment section 1824, the resilient member 186 is compressed until the first section 1824a of the second abutment section 1824 contacts the conductive member 1806 of the second housing 180. Therefore, the switch pin 18 can be selectively electrically or electrically separated via the conductive member 1806 by contacting the first segment 1824a of the second abutting portion 1824 with the conductive member 1806 of the second housing 180. The conductive member 148 of the needle sleeve 14 shown in FIG. 3C is further connected to the first electrode and the second electrode (not shown) connected to the needle sleeve 14.

In FIG. 4B and FIG. 4C, the elastic member 186 of the switch pin 18 is located in the accommodating space 1800c of the second housing 180, and is further located in the slot 1822c of the first abutting section 1822. The resilient member 186 is coupled between the bottom of the slot 1822c of the first abutting section 1822 of the abutting member 182 and the slider 1824b of the second abutting section 1824, and is wrapped around the second section 1824c of the second abutting section 1824. . The resilient member 186 includes a first end 186a and a second end 186b. In the present embodiment, the first end portion 186a of the elastic member 186 is connected. The second end portion 186b is connected to the bottom of the slot 1822c of the first abutting portion 1822, but the present invention is not limited thereto.

In some embodiments, the first end 186a of the resilient member 186 can be coupled to any location on the second abutment segment 1824. In some embodiments, the second end 186b of the resilient member 186 can be coupled to the inner wall 1822d of the slot 1822c of the first abutment section 1822. Thereby, the elastic member 186 is compressed or reset as the first abutment section 1822 moves toward or away from the second abutment section 1824. With the first abutting section 1822 moving closer to the second abutting section 1824, the resilient member 186 is compressed until the second section 1824c of the second abutting section 1824 contacts the slot 1822c of the first abutting section 1822. bottom.

In the present embodiment, the head 1822b of the first abutting section 1822 is a flat head, but the present invention is not limited thereto. In other embodiments, any suitable head shape can be used in this case. For example, the head 1822b of the first abutment section 1822 can comprise a star head, a round head, an umbrella head, a cup head, a pointed head, a sawtooth head, a crown head, or any suitable head shape.

In some embodiments, the spring constant of the resilient member 186 of the switch needle 18 is different than the spring rate of the resilient member 184. In the present embodiment, the elastic modulus of the elastic member 186 of the switch needle 18 is greater than the elastic modulus of the elastic member 184, but the present invention is not limited thereto. In other embodiments, the elastic modulus of the elastic member 186 of the switch needle 18 may also be smaller than the elastic modulus of the elastic member 184.

In the present embodiment, the elastic member 184 and/or the elastic member 186 are springs, but the present invention is not limited thereto. In other embodiments, any component having the ability to elastically deform or have a restoring force after elastic deformation can be applied as The elastic member 184 and/or the elastic member 186 of the present invention. In the present embodiment, the material of the elastic member 184 includes an insulating material or a material having a low electrical conductivity. For example, the material of the elastic member 184 comprises an alloy steel having a chromium content of from about 10% to about 30%. In some embodiments, the material of the elastic member 186 comprises an insulating material or a material having a low conductivity. Optionally, the material of the elastic member 186 may also include a conductive material. For example, the material of the elastic member 186 may comprise an alloy steel having a chromium content of from about 10% to about 30%. In contrast, the material of the elastic member 186 may also include a steel wire (SWP) and is subjected to gold plating.

Please refer to FIG. 5A, FIG. 5B and FIG. 5C. 5A to 5C are cross-sectional views showing the switch needle assembly 12 according to an embodiment of the present invention during different operations. In FIG. 5A, the switch needle 18 is inserted into the first housing 140 of the needle hub 14 via the opening 144 of the needle hub 14. The conductive member 1806 of the switch pin 18 contacts the head 1492 of the conductive member 149 in the needle cover 14 and presses against the conductive member 149 of the needle cover 14 such that the conductive post 1490 of the conductive member 149 compresses the elastic member 147 in the needle cover 14. At this time, the elastic member 147 of the needle sleeve 14 stores energy by being compressed, and applies a restoring force to the conductive member 149, so that the conductive member 149 abuts the conductive member 1806 of the switch needle 18, thereby ensuring the conductive member 149 of the needle sleeve 14 and The conductive members 1806 of the switch pins 18 can maintain a state of mutual contact under different environments.

Next, the switch needle 18 is supported by the dam 141 of the first housing 140 of the needle sleeve 14 by the stopper portion 1802 of the second housing 180. At this time, the head portion 1822b of the first abutting portion 1822 has not touched the object to be tested (for example, the circuit board 19 as shown in Fig. 1), and thus the abutting member 182 is not subjected to an external force. At this time, the elastic member 184 of the switch needle 18 is supported by the slider of the second abutting section 1824. The 1824b is in contact with the conductive member 1806 of the second housing 180 and is subjected to the pressure provided by the second abutting section 1824, the resilient member 186, and the first abutting section 1822.

In the foregoing configuration, the first section 1824a of the second abutment section 1824 has a length D1. The length of the elastic member 184 at this time is the length L1. The length L1 of the resilient member 184 is greater than the length D1 of the first section 1824a of the second abutting section 1824. Thus, the first section 1824a of the second abutment section 1824 is separated from the conductive member 1806 of the second housing 180. Moreover, in the overall structure of the switch pin 18, the first section 1824a of the second abutting section 1824 and the conductive member 1806 of the second housing 180 are electrically isolated from each other by the insulating portion 1804.

After the switch needle 18 is sleeved on the first housing 140 of the needle sleeve 14 through the opening 144 of the first housing 140 of the needle sleeve 14, the end portion 148a of the conductive member 148 of the needle sleeve 14 is electrically connected to the switch needle 18 The first housing 140 of the sleeve 14 is electrically connected to the second housing 180 of the switch pin 18, the first abutting portion 1822 of the abutting member 182 of the switch pin 18, and then electrically connected to the first housing 140. The first section 1824a of the second abutting section 1824 of the switch pin 18 abuts the top member 182. Since the conductive member 149 and the first housing 140 are electrically isolated from each other through the insulating member 146 in the overall structure of the needle sleeve 14, the head 1822b of the first abutting portion 1822 is not in contact with the object to be tested. The conductive member 149 of the needle sleeve 14 and the first housing 140 cannot be electrically connected through the switch needle 18.

In addition, the resilient member 186 of the switch pin 18 is supported between the bottom of the slot 1822c of the first abutment section 1822 and the slider 1824b of the second abutment section 1824 and is received by the first abutment section 1822. pressure. In the foregoing structural configuration, the length of the elastic member 186 at this time is the length L2.

Next, in FIG. 5B, the head 1822b of the first abutting section 1822 contacts the object to be tested (for example, the circuit board 19 as shown in FIG. 1), so that the abutting member 182 is subjected to the object to be tested. pressure. At this time, the elastic member 184 of the switch needle 18 is subjected to the pressure provided by the second abutting portion 1824, the elastic member 186, the first abutting portion 1822, and the object to be tested.

In the foregoing configuration, the resilient member 184 is compressed until the first section 1824a of the second abutting section 1824 contacts the conductive member 1806 of the second housing 180. At this time, the switch pin 18 can electrically contact the conductive member 148 of the needle sleeve 14 via the conductive member 1806 by contacting the first segment 1824a of the second abutting portion 1824 with the conductive member 1806 of the second housing 180. Therefore, in a state where the head 1822b of the first abutting portion 1822 contacts the object to be tested, the conductive member 149 of the sleeve 14 and the conductive member 148 and the first housing 140 are electrically connected through the switch pin 18, thereby being turned on. The first electrode and the second electrode (not shown) are connected to the needle sleeve 14.

In the present embodiment, since the elastic modulus of the elastic member 186 of the switch needle 18 is greater than the elastic modulus of the elastic member 184, in the case where the head portion 1822b of the first abutting portion 1822 contacts the object to be tested, the elastic member 186 is The first abutting section 1822 and the pressure provided by the object to be tested are also shared, but less deformed than the elastic member 184. Therefore, after the head 1822b of the first abutting portion 1822 contacts the object to be tested, the length of the elastic member 186 is slightly reduced to the length L2' as shown in Fig. 5A. In particular, the second section 1824c of the second abutment section 1824 has a length D2. The length L2 of the resilient member 186 is greater than the length D2 of the second section 1824c of the second abutting section 1824. Thus, the second section 1824c of the second abutment section 1824 and the first abutment section 1822 The bottom of the slot 1822c is phase separated.

Next, in FIG. 5C, the head 1822b of the first abutting section 1822 is further subjected to the pressure provided by a workpiece in addition to the object to be tested (for example, the circuit board 19 as shown in FIG. 1). At this time, the elastic member 186 of the switch needle 18 simultaneously receives the pressure provided by the first abutting portion 1822, the object to be tested, and the workpiece.

In the foregoing configuration, the resilient member 186 is compressed until the second section 1824c of the second abutment section 1824 contacts the bottom of the slot 1822c of the first abutment section 1822. At the same time, the slider 1824b of the second abutting section 1824 is slidably movable relative to the inner wall 1822d of the slot 1822c of the first abutting section 1822 to guide the second abutment in the slot 1822c of the first abutting section 1822. Top section 1824.

At this point, the first section 1824a of the second abutting section 1824 of the switch pin 18 maintains contact with the conductive member 1806 of the second housing 180 and maintains the conductive member 148 of the conductive sleeve 14 electrically. Therefore, the length of the elastic member 186 is shortened as the elastic member 186 receives the pressure of the first abutting portion 1822, the object to be tested, and the workpiece. In some embodiments, the length of the resilient member 186 is shortened from a length L2 as shown in FIG. 5B to substantially equal to the length D2 of the second segment 1824c.

Please refer to FIG. 6A, FIG. 6B, FIG. 6C, and FIG. 6D. 6A to 6D are side views respectively showing the detecting apparatus 1 according to an embodiment of the present disclosure during different operations. Please refer to Figure 6A and refer to Figure 5A. In the present embodiment, the circuit board 19 (see FIG. 6B) has not been placed above the lower fixture 102. In the detecting device 1, the needle sleeve 14 of the plurality of switch needle assemblies 12 The conductive member 149 is electrically connected to the first housing 140 without passing through the switch pin 18, thereby judging that the circuit board 19 is not placed on the lower fixture 102. In the present embodiment, the opening 144 of the first housing 140 of the switch needle assembly 12 faces the upper fixture 104.

Next, please refer to FIG. 6B and refer to FIG. 5B. The circuit board 19 is placed above the lower jig 102 and disposed on the carrier 105 such that the post 1052 of the carrier 105 is inserted into the positioning hole 190 of the circuit board 19 to position the circuit board 19. The switch pin assembly 12 contacts the circuit board 19 and is subjected to the pressure provided by the circuit board 19. At this time, the first section 1824a of the second abutting section 1824 of the switch pin 18 contacts the conductive member 1806 of the second housing 180, and electrically conducts the conductive member 148 of the needle sleeve 14 via the conductive member 1806 (see the 5B)). The conductive member 149 of the sleeve 14 and the conductive member 148 and the first housing 140 are electrically connected to the first and second electrodes (not shown). Thereby, the detecting device 1 determines via the switch pin assembly 12 that the circuit board 19 placed above the lower jig 102 has penetrated the plurality of guide posts 1052 on the carrier 105, and judges that the circuit board 19 has not been tilted.

In the embodiment shown in FIG. 6B, the circuit board 19 does not have a rocker, and thus the plurality of switch pin assemblies 12 in the detecting device 1 are compressed to have a height relative to the needle plate 103 due to the placement of the circuit board 19. H2. The height of the switch needle assembly 12 is H2 less than the height H1. In the present embodiment, the abutting members 182 (see FIGS. 5A to 5C) of the switch needles 18 of the plurality of switch needle assemblies 12 have ends that are close to the opening 144 of the needle sleeve 14, and the ends are flush. Further, the plurality of switch pin assemblies 12 can smoothly contact the lower surface of the circuit board 19 by the aforementioned end portions to avoid any damage to the circuit board 19.

Please refer to FIG. 6C and refer to FIG. 5A and FIG. 5B. FIG. 6C is a side view showing the detecting device 1 according to an embodiment of the present disclosure in an operation step corresponding to FIG. 6B, in which the circuit board 19' is in a state of a rocker. In the present embodiment, the circuit board 19' is placed above the lower jig 102. A portion of the post 1052a of the carrier 105 (shown as a left side in Figure 6C) is inserted into a corresponding locating hole 190 in the board 19'. In contrast, a portion of the guide post 1052b of the carrier 105 (shown as a right side in FIG. 6C) is not inserted or partially inserted into a corresponding locating hole 190 in the circuit board 19'.

Specifically, the switch pin assembly 12 on the lower fixture 102 near the guide post 1052a contacts the circuit board 19', withstanding the pressure provided by the circuit board 19', and electrically conducting the conductive member 148 of the sleeve 14 and the first A housing 140, and thus a first electrode and a second electrode (not shown) are connected to the sleeve 14. However, the switch needle assembly 12 on the lower fixture 102 near the guide post 1052b does not contact the circuit board 19', or the pressure provided by the circuit board 19' is insufficient to cause the second abutment section in the switch needle assembly 12. The 1824 contacts the conductive member 1806 of the second housing 180. Therefore, the needle sleeve 14 in the switch needle assembly 12 of the lower fixture 102 near the guide post 1052b cannot be electrically connected to the conductive member 148 through the switch needle 18, and thus the first electrode and the second electrode cannot be turned on.

Therefore, when the conductive member 148 of the sleeve 14 of the plurality of switch needle assemblies 12 is electrically or electrically separated from the first housing 140, the detecting device 1 determines the circuit placed above the lower fixture 102. The plate 19' is not completely worn through the plurality of guide posts 1052 on the carrier 105 to complete the positioning, or the circuit board 19' is warped. At this time, the detecting device 1 stops operating, and the position of the circuit board 19' is readjusted until the first electrode connected to the needle sleeve 14 and the second electrode (not shown) are turned on to confirm that the circuit board 19 has been worn. Carrier board The positioning is completed by a plurality of guide posts 1052 on the 105. Next, the detecting device 1 is restarted for subsequent related processes.

In the present embodiment, the switch needle assembly 12 on the lower jig 102 near the guide post 1052a is compressed to have a height H2 with respect to the needle plate 103 due to the placement of the circuit board 19'. In contrast, due to the rocker of the circuit board 19', the switch needle assembly 12 on the lower jig 102 near the guide post 1052b has a height H1 with respect to the needle plate 103.

After continuing to Fig. 6B, please refer to Fig. 6D and refer to Fig. 5C. A power module (not shown) is operatively coupled to the fixture 104 and drives the upper fixture 104 to move along the direction Z toward the lower fixture 102 such that the probe of the needle plate 103 can conduct conductive features on the circuit board 19. Electrical detection. At this time, the carrier 105 passes through the circuit board 19 to withstand the pressure provided by the upper fixture 104, so that the carrier 105 is adjacent to the board 103 toward the needle board 103 until the carrier 105 abuts the needle board 103, and the carrier 105 is guided. The post 1052 will gradually protrude into the yield space 1040 of the upper jig 104. Further, the first abutting section 1822 of the switch needle assembly 12 simultaneously withstands the pressure provided by the circuit board 19 and the upper jig 104. At this time, the second abutting portion 1824 of the switch pin 18 maintains the conductive member 1806 contacting the second housing 180, and the first housing 140 of the needle sleeve 14 maintains electrical conduction with the conductive member 148. In contrast, the elastic member 186 in the switch pin 18 receives the pressure provided by the first abutting portion 1822, the circuit board 19, and the upper jig 104, and the length thereof is thus shortened, thereby making the first abutting portion 1822 relatively second. The top section 1824 is moving closer. Therefore, the height of the switch needle assembly 12 with respect to the needle plate 103 is further compressed to a height H3 from the height H2 as shown in Fig. 6B. The height H3 of the switch needle assembly 12 is less than the height H1 and the height H2.

In the present embodiment, the elastic modulus of the elastic member 184 and the elastic member 186 in the switch needle assembly 12 are different, so that two different strokes can be distinguished during the operation of the switch needle assembly 12. Specifically, when the switch needle assembly 12 is subjected to the pressure provided by the test object, the elastic member 184 is compressed until the second abutment portion 1824 contacts the conductive member 1806 of the second housing 180. During this time interval, the compression process of the resilient member 184 is defined as the first stroke of the switch needle assembly 12. Moreover, when the switch needle assembly 12 is further subjected to the weight of the upper jig 104, the elastic member 186 is compressed until the second section 1824c of the second abutment section 1824 contacts the bottom of the slot 1822c of the first abutment section 1822. During this time interval, the compression process of the resilient member 186 is defined as the second stroke of the switch needle assembly 12. In the present embodiment, the range of the second stroke is substantially from about 6 mm to about 8 mm, but the present invention is not limited thereto.

Thereby, the first stroke of the switch pin assembly 12 ensures that when the circuit board 19 is placed over the lower jig 102, the switch pin assembly 12 can be compressed by the circuit board 19 to detect whether the circuit board 19 is positioned or negated. board. The second stroke of the switch needle assembly 12 can continue to cause the switch needle assembly 12 to be compressed to a height H3 during movement of the carrier plate 105 relative to the needle plate 103, thereby providing a space for the carrier plate 105 to move toward the needle plate 103 and remaining attached to the needle The conduction state of the first electrode and the second electrode (not shown) on the sleeve 14.

From the above detailed description of the specific implementation of the present invention, it can be clearly seen that when the switch needle in the switch needle assembly is damaged, only the switch needle needs to be exchanged to complete the maintenance of the switch needle assembly without replacement. The entire set of switch pin assemblies, which in turn reduces the maintenance cost of the switch pin assembly. Moreover, during the maintenance of the switch needle, the needle sleeve can maintain the connection with the electrode, thereby avoiding opening Additional disassembly steps are performed during the maintenance of the needle assembly, which in turn saves assembly time of the switch needle assembly and reduces labor costs during assembly.

In addition, the switch pin assembly includes elastic members having different elastic coefficients, and a plurality of different strokes can be distinguished during the operation of the switch needle assembly. For example, the first stroke of the switch pin assembly ensures that when the board is placed over the lower fixture, the switch pin assembly can be compressed by the board to detect if the board is positioned or if a rocker has occurred. The second stroke of the switch needle assembly can continue to cause the switch needle assembly to be compressed during movement of the carrier relative to the needle plate, thereby providing a space for the carrier to move toward the needle plate, and maintaining the first electrode and the second electrode connected to the needle sleeve The conduction state of the electrode (not shown).

The features of the various embodiments described above will enable those of ordinary skill in the art to better understand the various aspects of the disclosure. It is to be understood by those of ordinary skill in the art that, in order to achieve the same objectives and/or the same advantages of the embodiments of the present disclosure, other processes and structures may be further designed or modified based on the disclosure. It is to be understood by those of ordinary skill in the art that the present invention may be practiced without departing from the spirit and scope of the disclosure. Make various changes, replacements and corrections.

Claims (10)

A switch pin assembly comprising: a first housing having a first opening and a second opening; a first conductive member partially inserted through the first opening in the first housing; an insulation The first conductive member is connected to the first housing via the insulating member; a second housing is detachably sleeved on the first housing via the second opening; and an abutting member The portion is inserted into the second housing, contacts the second housing, and is configured to selectively electrically or electrically separate the first conductive member while moving relative to the second housing. The switch needle assembly of claim 1, further comprising a first elastic member disposed in the second housing and connected between the end of the second housing adjacent to the first opening and the abutting member, and Wrap the abutting member. The switch needle assembly of claim 2, further comprising a second elastic member located in the second housing, and the abutting member includes a first abutting section and a second abutting section, wherein the An elastic member is wound around the second abutting section, and the second elastic member is coupled between the first abutting section and the second abutting section. The switch needle assembly of claim 3, wherein the elastic modulus of the second elastic member is different from the elastic modulus of the first elastic member. The switch needle assembly of claim 3, wherein the first abutting section has a slot, the second abutting section is slidably sleeved in the slot, and the second elastic member is located in the slot in. The switch needle assembly of claim 5, wherein the second abutment section includes a slider slidably engaging an inner wall of the slot of the first abutment section. The switch pin assembly of claim 1, wherein the second housing comprises a body portion and a blocking portion, the body portion is sleeved in the first housing, the blocking portion protrudes from the body portion, and Contacting the first housing adjacent to an end surface of the second opening. The switch pin assembly of claim 1, wherein the second housing comprises a body portion, an insulating portion and a second conductive member, the insulating portion being located at an end of the body portion facing the first conductive member, the second portion The conductive member is disposed in the insulating portion and partially located in the body portion, wherein the abutting member is configured to be movable relative to the second housing to selectively electrically or electrically separate the second conductive member The first conductive member. A detecting device comprising: a lower fixture; an upper fixture configured to move relative to the lower fixture in a direction; and a switch needle assembly according to any one of claims 1 to 8 disposed under the fixture a fixture, wherein the second opening of the first housing of the switch needle assembly faces the upper fixture. The detecting device of claim 9, wherein the abutting member of the switch pin assembly is flush with an end of the first opening.