Discrete device test fixture convenient to plug and unplug

Abstract

The utility model discloses a discrete device test fixture convenient to plug and unplug, and relates to the field of discrete device testing, the discrete device test fixture comprises a mounting plate arranged in the center of the top of an adapter plate, the top of the mounting plate is fixedly provided with a plurality of relays arranged in a rectangular array, and the left and right sides of the bottom of the mounting plate are fixedly provided with a plurality of insertion columns. A first inserting hole matched with the inserting column is formed in the top of the adapter plate, a bouncing piece used for bouncing the inserting column out of the first inserting hole is arranged in the first inserting hole, and the bouncing piece comprises a first spring with the top end and the bottom end fixedly connected to the bottom of the extrusion disc and the bottom of an inner cavity of the first inserting hole correspondingly. And inserting and fixing assemblies are fixedly arranged on the front side and the rear side of the top of the mounting plate correspondingly, and each inserting and fixing assembly comprises a first sliding rod slidably mounted in the outer cylinder. According to the device, a plurality of relays can be integrally inserted into the adapter plate and are prevented from being inserted into the corresponding jacks one by one, the operation is simple and convenient, and plugging and unplugging are convenient.

Description

Technical Field

[0001] The present application relates to the field of discrete device testing, and in particular to a discrete device testing fixture that is easy to plug and unplug. Background Art

[0002] MOSFET, transistor, and diode products must undergo performance testing before shipment to confirm that their electrical functions meet the requirements before packaging and shipment.

[0003] When using a discrete device test fixture controlled by a relay, the test socket is first opened, and various MOSFETs, transistors, and diodes to be tested are placed in corresponding limit slots. The test socket cover is then closed, and the control switches on the relays corresponding to the test points of the limit slots are opened in sequence. The control switches are used to send control signals to the relays, and current flows through the output end of the relay to the indicator light, causing the indicator light to light up. By observing the status of the indicator light, the working conditions of the relay and the current can be known, and the test of the discrete device is completed. However, when using the discrete device test fixture, the relays need to be inserted into the corresponding jacks one by one, which is too cumbersome to operate and inconvenient to plug and unplug. Utility Model Content

[0004] In order to improve the problem that several relays need to be inserted into corresponding sockets one by one, which is too cumbersome to operate and inconvenient to plug and unplug, the present application provides a discrete device test fixture that is easy to plug and unplug.

[0005] The present application provides a pluggable discrete device test fixture that adopts the following technical solution:

[0006] A test fixture for discrete devices that facilitates plugging and unplugging, comprising a mounting plate disposed at the center of the top of an adapter plate, a plurality of relays arranged in a rectangular array fixedly disposed on the top of the mounting plate, a plurality of mounting posts fixedly disposed on the left and right sides of the bottom of the mounting plate, a first mounting hole adapted for the mounting post being formed at the top of the adapter plate, a spring member disposed within the first mounting hole for ejecting the mounting post from the first mounting hole, the spring member comprising a first spring having a top and a bottom respectively fixed to the bottom of a squeeze disk and the bottom of an inner cavity of the first mounting hole;

[0007] The front and rear sides of the top of the mounting plate are both fixed with an inserting and fixing assembly, the inserting and fixing assembly includes a slide rod 1 slidably mounted inside the outer cylinder, the top of the adapter plate is provided with a second inserting hole that matches the shape of the slide rod 1, a mounting surface is provided on one side of the top of the surface of the slide rod 1, and a clamping assembly is provided between the mounting surface and the surface of the outer cylinder, the clamping assembly includes a clamping block fixed on the top of the side of the spring away from the slide rod 1;

[0008] The adapter plate is provided with a cavity 1 connected to its first insertion hole 2, and a limit assembly is provided in the cavity 1. The limit assembly includes a friction block provided in the cavity 1 and capable of lateral sliding. The surface of the friction block in contact with the slide rod 1 abuts against the surface of the slide rod 1.

[0009] By adopting the above technical solution, several relays are installed on the mounting plate, the relay pins are inserted into the sockets, the mounting column 1 is inserted into the mounting hole 1, and the mounting plate is installed on the top of the adapter plate by cooperating with the insertion fixing component and the limit component, and the several relays are inserted into the sockets as a whole, avoiding the need to insert the relays one by one, which is convenient and quick.

[0010] Preferably, the extrusion disk is located in the insertion hole 1 and can slide longitudinally.

[0011] By adopting the above technical solution, the insertion column squeezes the squeezing disk and the spring at the same time, and then the mounting plate bounces up under the action of the spring, the insertion column pops out from the insertion hole one, and the relay pin pops out from the hole, making disassembly convenient.

[0012] Preferably, a cavity three is provided at the top of the outer cylinder, which is adapted to the shape of the slide rod two, and the slide rod one is fixedly connected to the center of the bottom of the slide rod two. The slide rod one and the slide rod two are both located in the cavity three and can slide longitudinally. The end of the slide rod one away from the slide rod two can move through the side wall of the outer cylinder and extend to the outside. A groove cavity is provided below the surface of the slide rod one, and the position of the surface of the slide rod one in the groove cavity is sleeved with a spring two, the top and bottom ends of which are respectively fixed to the top of the groove cavity and the bottom of the inner cavity of cavity three.

[0013] By adopting the above technical solution, the second slide bar is pressed, and the second slide bar fixed to the second slide bar slides into the second insertion hole, thereby fixing the mounting plate on the adapter plate.

[0014] Preferably, the spring piece is fixedly mounted on the mounting surface by means of bolts, a weakening groove is provided on the outer bottom of the spring piece, and two card slots 1 that are adapted to the shape of the card block are provided on the surface of the outer cylinder.

[0015] By adopting the above technical solution, when the slide bar 1 is pressed into the insertion hole 2, the card block engaged in the upper card slot 1 slides out of the card slot 1 and is engaged in the lower card slot 1, thereby fixing the slide bar 1 in the insertion hole 2, fixing the mounting plate on the adapter plate, and inserting a plurality of relays as a whole into the insertion hole, avoiding the need to insert the relays one by one, which is convenient and quick.

[0016] Preferably, a mounting block is fixedly connected to the position of the outer cylinder surface corresponding to the lower side slot 1, a push rod 1 is movably installed through the center of the outer side of the mounting block, the inner end of the push rod 1 movably passes through the side wall of the mounting block and extends into the slot 1, a cavity 2 is opened in the mounting block, and a spring 3 is sleeved on the surface of the push rod 1, with both ends respectively fixed to the left and right sides of the inner cavity of the cavity 2.

[0017] By adopting the above technical solution, the push rod 1 is pushed to push the card block out of the card slot 1. Under the action of the spring 3, the slide rod 1 rebounds to its original position and is no longer inserted in the insertion hole 2. At this time, the card block is connected to the upper card slot 1, and then the mounting plate bounces up under the action of the spring 1, the insertion column pops out from the insertion hole 1, and the relay pin pops out from the socket, which is convenient for disassembly.

[0018] Preferably, a spring four is fixed to the side of the friction block away from the second insertion hole, and the other end of the spring four is fixed to the side of the inner cavity of the cavity one away from the friction block.

[0019] By adopting the above technical solution, the surface of the friction block in contact with the slide rod 1 abuts against the surface of the slide rod 1, avoiding the generation of a virtual position, increasing the friction between the friction block and the slide rod 1, and preventing the slide rod 1 from rebounding under the action of the spring 1 and the spring 3, so that the relay is installed more firmly.

[0020] Preferably, a bevel groove is provided at the center of one end of the friction block, and a push rod 2 is movably installed at a position corresponding to the bevel groove in the adapter plate, and the inner and outer ends of the push rod 2 are both movably passed through the side wall of the adapter plate and extend into and out of the bevel groove respectively. A connecting plate is fixedly connected to one side of the push rod 2, and a sliding groove that is adapted to the shape of the connecting plate is provided in the adapter plate. The connecting plate is located in the sliding groove and can slide horizontally, and a spring 5 is fixed to the inner side of the connecting plate, the other end of which is fixed to the inner side of the inner cavity of the sliding groove.

[0021] By adopting the above technical solution, the push rod applies thrust to the inclined surface of the inclined groove, and the friction block is forced to slide into the cavity one while squeezing the spring four, so that the friction between the friction block and the slide bar one disappears, so that the slide bar one can pop out from the insertion hole two, and then the mounting plate pops up under the action of the spring one, the mounting column pops out from the insertion hole one, and the relay pin pops out from the socket, making disassembly convenient.

[0022] Preferably, a plurality of pins are fixedly connected to the bottom of the plurality of relays, and the plurality of pins movably penetrate the side wall of the mounting plate and extend to the outside, and a plurality of jacks three adapted to the pins are provided on the top of the adapter plate.

[0023] By adopting the above technical solution, the relay pins are inserted into the sockets to achieve electrical connection.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. By installing several relays on the mounting plate, inserting the relay pins into the sockets, inserting the mounting column one into the mounting hole one, and installing the mounting plate on the top of the adapter plate by inserting the fixing component and the limit component, and the several relays are inserted into the sockets as a whole, avoiding the need to insert the relays one by one, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of this application;

[0027] Figure 2 This is a schematic diagram of the overall structure of this application;

[0028] Figure 3 This is a schematic diagram of the spring-up member structure of this application;

[0029] Figure 4 This is a schematic diagram of the structure of the insertion and fixing components of this application;

[0030] Figure 5 for Figure 4 A schematic diagram of the structure at center A;

[0031] Figure 6 This is a schematic diagram of the limit component structure of this application.

[0032] Reference numerals: 1, adapter plate; 2, mounting plate; 3, relay; 4, pin; 5, ear plate; 6, screw; 7, mounting post; 8, mounting hole 1;

[0033] 9. Pop-up member; 91. Spring 1; 92. Squeeze plate;

[0034] 10. Insertion and fixing assembly; 101. Outer cylinder; 102. Slide rod 2; 103. Slide rod 1; 104. Mounting surface; 105. Groove; 106. Spring 2; 107. Cavity 3;

[0035] 11. Snap-fit ​​assembly; 111. Spring; 112. Bolt; 113. Weakened groove; 114. Clamping block; 115. Clamping slot 1; 116. Push rod 1; 117. Mounting block; 118. Cavity 2; 119. Spring 3;

[0036] 12. Install the second socket;

[0037] 13. Limiting assembly; 131. Spring 5; 132. Friction block; 133. Spring 4; 134. Inclined groove; 135. Push rod 2; 136. Connecting plate; 137. Slide groove;

[0038] 14. Jack three; 15. Cavity one. DETAILED DESCRIPTION

[0039] The following is combined with Figures 1-6This application is described in further detail.

[0040] The embodiment of the present application discloses a discrete device test fixture that is easy to plug and unplug.

[0041] Reference Figure 1-Figure 3 A test fixture for discrete devices that is easy to plug and unplug, including a mounting plate 2 located at the top center of an adapter plate 1, with ear plates 5 fixedly connected to both sides of a plurality of relays 3. The top of the ear plate 5 and the position corresponding to the ear plate 5 on the top of the mounting plate 2 are penetrated with threaded holes adapted to screws 6. The screws 6 are threaded through the threaded holes on the ear plate 5 and then fixedly connected to the threaded holes on the mounting plate 2 to fix the plurality of relays 3 on the top of the mounting plate 2. The plurality of relays 3 are arranged in a rectangular array, and the plurality of pins 4 of the plurality of relays 3 are movable through the side wall of the mounting plate 2 and are inserted into the mounting plate 2. In the corresponding socket three 14, several relays 3 are fixedly connected to the top of the adapter plate 1 to realize electrical connection. Several mounting posts 7 are symmetrically fixedly installed on the left and right sides of the bottom of the mounting plate 2. A mounting hole 8 that is adapted to the shape of the mounting post 7 is opened on the adapter plate 1. A pop-up member 9 for popping out the mounting post 7 from the mounting hole 8 is arranged in the mounting hole 8. The pop-up member 9 includes a spring 91. The spring 91 is fixedly connected to the bottom of the inner cavity of the mounting hole 8. The top of the spring 91 is fixedly connected to the bottom of the extrusion disk 92 located in the mounting hole 8 and realizing longitudinal sliding.

[0042] The ear plate 5 connected to the relay 3 is fixedly connected to the top of the mounting plate 2 by screws 6. When the relay 3 is damaged and needs to be replaced, the screws 6 are unscrewed and the relay 3 is pulled out from the mounting plate 2. During installation, the pins of the relay 3 are passed through the corresponding socket three 14, and the ear plate 5 of the relay 3 is fixed to the top of the mounting plate 2 by screws 6, and then the relay 3 is installed on the top of the mounting plate 2, which facilitates the replacement of the relay 3. By inserting several mounting columns 7 into the corresponding mounting holes 8, the pins 4 of several relays 3 are indirectly inserted into the corresponding socket three 14. Then, with the cooperation of the mounting fixing component 10 and the limiting component 13, the electrical connection between the relay 3 and the adapter plate 1 is completed, avoiding the relays 3 being inserted one by one on the adapter plate 1, facilitating the insertion of the relay 3, and being convenient and quick. When the mounting column 7 is inserted into the mounting hole 8, it will squeeze the squeezing disk 92 and the spring 91, and then under the action of the spring 91, the mounting plate 2 and the relay 3 are bounced off the adapter plate 1, which facilitates the disassembly of the relay 3.

[0043] Reference Figure 4 、 Figure 5, a number of insertion and fixing components 10 are symmetrically fixed on the front and rear sides of the top of the mounting plate 2. The insertion and fixing components 10 include a slide rod 103 slidably mounted inside the outer cylinder 101, and a number of insertion holes 12 adapted to the shape of the slide rod 103 are opened on the top of the adapter plate 1. The clamping component 11 is fixedly mounted on a mounting surface 104 on the top side of the slide rod 103. The clamping component 11 includes a clamping block 114 fixed on the top of the spring 111 away from the slide rod 103. The bottom of the clamping block 114 is an inclined surface, and the clamping block 114 is in the shape of a right-angled trapezoid. The top of the slide rod 103 is fixedly connected to the slide rod 21 02, the radius of the slide rod 103 is 2cm smaller than that of the slide rod 2 102, and the cavity 3 107 adapted to the slide rod 2 102 is opened at the center of the top of the outer cylinder 101. The slide rod 2 102 is located in the cavity 3 107, and the end of the slide rod 103 away from the slide rod 2 102 is movable through the bottom wall of the outer cylinder 101 and extends to the outside. An annular groove 105 is chiseled below the surface of the slide rod 103, so that the diameter of the part of the slide rod 103 is reduced by 4cm. The spring 2 106 is sleeved on the surface of the slide rod 103 at the position of the groove 105. The top of the spring 2 106 is fixedly connected to the top of the groove 105. The spring 2 The bottom end of 106 is fixedly connected to the bottom of the inner cavity of cavity three 107, and a threaded hole that matches the shape of bolt 112 is opened on the outside of spring piece 111 and mounting surface 104. Bolt 112 passes through the threaded hole on spring piece 111 and is threadedly connected to the threaded hole on mounting surface 104, so that spring piece 111 is fixedly connected to mounting surface 104. Weakened groove 113 is opened at the bottom of the outer side of spring piece 111. Spring piece 111 can be deformed by opening weakened groove 113. Slot 115 that matches the shape of block 114 is opened on the surface of outer cylinder 101. Two slots 115 are arranged on the same straight line. Mounting block 1 17 is fixedly mounted on the surface of the outer cylinder 101 and corresponds to the lower side slot 115, and a push rod 116 is slidably installed in the mounting block 117. The outer end of the push rod 116 movably passes through the side wall of the mounting block 117 and extends to the outside, and the inner end of the push rod 116 movably passes through the side wall of the mounting block 117 and extends into the slot 115, and the inner end surface of the push rod 116 is flush with the inner end surface of the mounting block 117. Cavity 2 118 is opened in the center of the mounting block 117, and a spring 3 119 is sleeved on the surface of the push rod 116. The inner end and outer end of the spring 3 119 are respectively fixedly connected to the two ends of the inner cavity of cavity 2 118.

[0044] By inserting the plurality of mounting posts 7 into the corresponding mounting holes 8, the mounting plate 2 is mounted on the adapter plate 1, and the pins 4 of the plurality of relays 3 are inserted into the corresponding sockets 14. Then, the second slide bar 102 is pressed, and the second slide bar 102 drives the first slide bar 103 to be inserted into the second mounting hole 12. Due to a certain friction between the first slide bar 103 and the second mounting hole 12, the first slide bar 103 is fixedly inserted into the second mounting hole 12, thereby preventing the mounting plate 2 from being elastically moved. Under the action of spring 191, the relay 3 is fixedly installed on the adapter plate 1. During the sliding process, the slide bar 103 is engaged with the block 114 in the slot 115 thereof, and the inclined surface receives a thrust. Through the decomposition of the force, it can be seen that the block 114 and the spring piece 111 are subjected to a force in the direction away from the slot 115, and then the spring piece 111 weakens the slot 113 and deforms, so that the spring piece 111 drives the block 114 out of the slot 115. The first slide 103 slides outward, so that the slide bar 103 can slide toward the second insertion hole 12. When the slide bar 103 is fully inserted into the second insertion hole 12, the block 114 corresponds to the position of the card slot 115 on the lower side, and then the pressure received by the spring 111 is released, and the block 114 rebounds and is engaged in the card slot 115, preventing the slide bar 103 from rebounding and being inserted into the second insertion hole 12 under the action of the spring 2 106. When it rebounds to its original position, the push rod 116 can be pushed, and the push rod 116 pushes the block 114 out of the slot 115, and then the spring 2 106 rebounds and drives the slide bar 103 to rebound to its original position, and the block 114 is engaged in the slot 115 at the upper end, and then the mounting plate 2 will no longer be fixed on the adapter plate 1. Under the action of the spring 1 91, the relay 3 and the mounting plate 2 are completely bounced off the adapter plate 1, which facilitates the disassembly of the mounting plate 2 and the relay 3.

[0045] Reference Figure 6, a cavity 15 connected to the second insertion hole 12 is provided inside the adapter plate 1, and a limiting component 13 for limiting the sliding rod 103 from popping out from the second insertion hole 12 is provided in the cavity 15, and the limiting component 13 includes a friction block 132 provided in the cavity 15 and realizing lateral sliding, and the surface of the friction block 132 in contact with the sliding rod 103 abuts against the surface of the sliding rod 103 to avoid generating a virtual position and increase the friction between the friction block 132 and the sliding rod 103, and a spring 4 133 is fixedly connected to the center of the side of the friction block 132 away from the second insertion hole 12, and the end of the spring 4 133 away from the friction block 132 is fixedly connected to the cavity 1 The inner cavity is away from the side of the friction block 132, and the inclined groove 134 is opened in the center of one end of the friction block 132. A push rod 135 is slidably installed on the side of the adapter plate 1 at the position corresponding to the inclined groove 134. The inner end of the push rod 135 extends into the inclined groove 134. The connecting plate 136 is fixedly connected to one side of the push rod 135. The connecting plate 136 is located in the sliding groove 137 initially opened inside the adapter plate 1 and can slide horizontally. The shape of the sliding groove 137 is adapted to that of the connecting plate 136. The center of the inner side of the connecting plate 136 is fixedly connected to the spring 5 131. The section of the spring 5 131 away from the connecting plate 136 is fixedly connected to the inner side of the inner cavity of the sliding groove 137.

[0046] Due to the long-term insertion and removal of the slide bar 103 in the second insertion hole 12, the friction between the slide bar 103 and the second insertion hole 12 is reduced, so that the slide bar 103 may be directly ejected from the second insertion hole 12 under the action of the spring 191, and the relay 3 is not firmly installed. By setting the limit assembly 13, the surface of the friction block 132 in contact with the slide bar 103 abuts against the surface of the slide bar 103, and then there is friction between the friction block 132 and the slide bar 103, so that the slide bar 103 is firmly inserted into the second insertion hole 12, and when the slide bar 103 is inserted into the second insertion hole 12, by pushing the push rod 135, the push rod 135 applies a thrust on the inclined surface of the inclined groove 134 of the friction block 132, and through force As can be seen from the decomposition, the friction block 132 will receive a force in the direction of the cavity 15, causing the friction block 132 to slide into the cavity 15 and squeeze the spring four 133 at the same time, so that the slide bar 103 can be inserted into the insertion hole 2 12. When the slide bar 103 is fully inserted into the insertion hole 2 12, release the hand pushing the push rod 2 135. Under the action of the spring five 131, the push rod 2 135 rebounds to its original position, and the thrust acting on the friction block 132 disappears, causing the friction block 132 to rebound under the action of the spring four 133 to abut against the surface of the slide bar 103. There is friction between the friction block 132 and the slide bar 103, which prevents the slide bar 103 from popping out of the insertion hole 2 12, so that the relay 3 is firmly inserted on the adapter board 1.

[0047] The relay 3 and the adapter board 1 are both existing technologies, and their structures are not described in detail.

[0048] The implementation principle of the discrete device test fixture that is easy to plug and unplug in the embodiment of the present application is as follows: a plurality of relays 3 are fixedly installed at corresponding positions on the top of the mounting plate 2, and then a plurality of mounting posts 7 are inserted into the corresponding mounting holes 1 8. During the insertion process, the mounting posts 7 squeeze the squeezing disk 92 and the spring 1 91, and at the same time, the pin 4 of the relay 3 is inserted into the socket 3 14. At this time, the hand pressing the mounting plate 2 cannot be released to prevent the pin 4 of the relay 3 from being ejected from the socket 3 14 under the action of the spring 1 91. By pushing the push rod 2 135, the push rod 2 135 applies thrust to the friction block 1 On the inclined surface of the inclined groove 134 of the groove 132, the friction block 132 will receive a force in the direction of the cavity 15, so that the friction block 132 slides into the cavity 15, and at the same time squeezes the spring 4 133, so that the slide bar 103 can be inserted into the insertion hole 2 12. When the slide bar 103 is completely inserted into the insertion hole 2 12, the hand pushing the push rod 2 135 is released, and the push rod 2 135 rebounds to its original position under the action of the spring 5 131, and the thrust acting on the friction block 132 disappears, so that the friction block 132 rebounds to the position aligned with the slide bar 103 under the action of the spring 4 133. The surfaces are in contact, and there is friction between the friction block 132 and the slide bar 103, which prevents the slide bar 103 from popping out from the second insertion hole 12, so that the relay 3 is firmly inserted into the adapter plate 1. Then, the slide bar 102 is pressed, and the slide bar 103 is driven by the slide bar 102 to be inserted into the second insertion hole 12, and the clamping block 114 is clamped in the clamping groove 115, preventing the slide bar 103 from rebounding and popping out from the second insertion hole 12 under the action of the spring 106, so that the slide bar 103 is fixedly inserted in the second insertion hole 12, preventing the mounting plate 2 from bouncing off the adapter plate 1 under the action of the spring 191. Relay 3 is fixedly installed on the adapter board 1, and then the test socket is opened. The various MOSFETs, transistors and diodes to be tested are placed in the corresponding limit slots. Then the test socket cover is closed, and then the control switches on the relay 3 corresponding to the limit slot test points are opened in turn. The control switch is used to send a control signal to the relay 3. The current will flow through the output end of the relay 3 to the indicator light, making the indicator light up. By observing the status of the indicator light, you can know the working status of the relay 3 and the current, and complete the test of the discrete device.

[0049] The above are merely optional embodiments of the present disclosure and are not intended to limit the present disclosure. Those skilled in the art will readily appreciate that the present disclosure may be modified and varied in various ways. Any modifications, equivalent substitutions, improvements, and the like made within the spirit and principles of the present disclosure shall be included within the scope of protection of the present disclosure.

Claims

1. A discrete device test fixture that is easy to plug and unplug, comprising a mounting plate (2) arranged at the top center of an adapter plate (1), wherein a plurality of relays (3) arranged in a rectangular array are fixedly provided on the top of the mounting plate (2), characterized in that: A plurality of insertion columns (7) are fixed on the left and right sides of the bottom of the mounting plate (2); a insertion hole (8) adapted to the insertion column (7) is provided on the top of the adapter plate (1); a pop-up member (9) for popping up the insertion column (7) from the insertion hole (8) is provided in the insertion hole (8); the pop-up member (9) includes a spring (91) whose top and bottom ends are respectively fixed to the bottom of the extrusion plate (92) and the bottom of the inner cavity of the insertion hole (8); The front and rear sides of the top of the mounting plate (2) are both fixed with an insert fixing assembly (10), the insert fixing assembly (10) includes a slide rod (103) slidably mounted inside the outer cylinder (101), the top of the adapter plate (1) is provided with an insert hole (12) that matches the shape of the slide rod (103), a mounting surface (104) is provided on one side of the top of the surface of the slide rod (103), the mounting surface (104) and the surface of the outer cylinder (101) are provided with a clamping assembly (11), the clamping assembly (11) includes a clamping block (114) fixed on the top of the side of the spring (111) away from the slide rod (103); The adapter plate (1) is provided with a cavity (15) in communication with a second insertion hole (12) thereof, and a limit assembly (13) is provided in the cavity (15). The limit assembly (13) includes a friction block (132) provided in the cavity (15) and capable of sliding laterally, and the surface of the friction block (132) in contact with the slide rod (103) abuts against the surface of the slide rod (103).

2. The pluggable discrete device test fixture according to claim 1, characterized in that: The extrusion disc (92) is located in the insertion hole (8) and can slide longitudinally.

3. The pluggable discrete device test fixture according to claim 1, characterized in that: The outer cylinder (101) is provided with a cavity three (107) at the top thereof which matches the shape of the slide bar two (102); the slide bar one (103) is fixedly connected to the center of the bottom of the slide bar two (102); the slide bar one (103) and the slide bar two (102) are both located in the cavity three (107) and can slide longitudinally; the end of the slide bar one (103) away from the slide bar two (102) can move through the side wall of the outer cylinder (101) and extend to the outside; a groove cavity (105) is provided below the surface of the slide bar one (103); the surface of the slide bar one (103) is located at the position of the groove cavity (105) and is provided with a spring two (106) whose top and bottom ends are fixedly connected to the top of the groove cavity (105) and the bottom of the inner cavity of the cavity three (107) respectively.

4. The pluggable discrete device test fixture according to claim 3, characterized in that: The spring piece (111) is fixedly mounted on the mounting surface (104) by means of a bolt (112); a weakening groove (113) is provided on the outer bottom of the spring piece (111); and two first clamping grooves (115) having shapes matching those of the clamping block (114) are provided on the surface of the outer cylinder (101).

5. The pluggable discrete device test fixture according to claim 4, characterized in that: A mounting block (117) is fixedly connected to the position of the lower side slot 1 (115) on the surface of the outer cylinder (101), and a push rod 1 (116) is movably installed through the center of the outer side of the mounting block (117). The inner end of the push rod 1 (116) movably passes through the side wall of the mounting block (117) and extends into the slot 1 (115). A cavity 2 (118) is opened in the mounting block (117), and a spring 3 (119) is sleeved on the surface of the push rod 1 (116), with both ends respectively fixed to the left and right sides of the inner cavity of the cavity 2 (118).

6. The pluggable discrete device test fixture according to claim 1, characterized in that: The friction block (132) is fixedly connected to a side of the friction block (132) away from the second insertion hole (12), with the other end of the spring (133) being fixedly connected to the inner cavity of the first cavity (15) away from the friction block (132).

7. The pluggable discrete device test fixture according to claim 1, characterized in that: A bevel groove (134) is provided at the center of one end of the friction block (132), and a push rod 2 (135) is movably installed at a position corresponding to the bevel groove (134) in the adapter plate (1). The inner end and the outer end of the push rod 2 (135) are both movably passed through the side wall of the adapter plate (1) and extend to the inside and outside of the bevel groove (134) respectively. A connecting plate (136) is fixedly connected to one side of the push rod 2 (135), and a sliding groove (137) that is adapted to the shape of the connecting plate (136) is provided in the adapter plate (1). The connecting plate (136) is located in the sliding groove (137) and can slide horizontally. A spring 5 (131) is fixedly connected to the inner side of the connecting plate (136), the other end of which is fixedly connected to the inner side of the inner cavity of the sliding groove (137).

8. The pluggable discrete device test fixture according to claim 1, characterized in that: The bottoms of the plurality of relays (3) are fixedly connected with a plurality of pins (4), and the plurality of pins (4) movably penetrate the side wall of the mounting plate (2) and extend to the outside. The top of the adapter plate (1) is provided with a plurality of sockets (14) adapted to the pins (4).

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