CN114019196A

CN114019196A - Relay contact voltage drop test fixture

Info

Publication number: CN114019196A
Application number: CN202111281441.XA
Authority: CN
Inventors: 饶云飞; 苗建峰; 彭贵斌
Original assignee: Hunan Sanyi Seiko Technology Co ltd
Current assignee: Hunan Sanyi Seiko Technology Co ltd
Priority date: 2021-11-01
Filing date: 2021-11-01
Publication date: 2022-02-08

Abstract

The invention discloses a relay contact pressure drop test fixture in the technical field of pressure drop test equipment, which comprises a test base, a support, a mounting plate, a cylinder, a buffer assembly and a test plate, wherein a plurality of test columns are mounted on the test plate, a plurality of clamping arms are hinged to the test base along the central line array of the test base, and when the test plate moves downwards, the driving assembly drives the plurality of clamping arms to swing towards the inner side direction of the test base, so that the clamping arms clamp a relay placed on the test base. Compared with the prior art, the invention has the beneficial effects that: survey test panel through the cylinder drive and remove down for the test post can with the contact on the relay, thereby replace the mode that comes the test through the wiring at present, promoted the efficiency that detects the operation, move down through surveying the test panel in addition, and by the swing of drive assembly drive clamp arm, make a plurality of clamp arms press from both sides tight relay jointly, when making the detection operation, the relay can not produce and removes by oneself, improves the precision of test.

Description

Relay contact voltage drop test fixture

Technical Field

The invention relates to the technical field of voltage drop test equipment, in particular to a clamp for testing the contact voltage drop of a relay.

Background

A solid-state relay (SSR, hereinafter abbreviated as "SSR") is a novel contactless switch device composed entirely of solid-state electronic components, and it uses the switching characteristics of electronic components (such as switching transistors, triacs, and other semiconductor devices) to achieve the purpose of connecting and disconnecting a circuit without contact and spark, and is also called a "contactless switch". The solid-state relay is a four-terminal active device, two terminals of which are input control terminals, and the other two terminals of which are output controlled terminals, has the functions of amplification driving and isolation, is very suitable for driving a high-power switch type actuating mechanism, has higher reliability than an electromagnetic relay, is contactless, has long service life, high speed and small interference to the outside, and is widely applied.

The solid-state relay needs to test important indexes before delivery: the traditional test process is that four wires are respectively connected to input a plus pole and output the plus pole and unload the product after the test is finished, and the next product is continuously loaded. Through the retrieval, chinese patent publication No. CN209446635U discloses a relay contact pressure drop test fixture, which comprises a housing, the standing groove has been seted up to the upper surface of casing, the direction spout has all been seted up at both ends about the standing groove, two direction spouts all communicate with the outside, two direction spouts respectively with two movable block sliding connection, movable block and casing pass through resetting means and connect, install two input on the left movable block and lead electrical pillar, the one end of input is led electrical pillar extends to in the standing groove, install two output on the movable block on right side and lead electrical pillar, the one end of output is led electrical pillar extends to in the standing groove, the side that the standing groove was kept away from to the movable block and the one end of dwang are passed through the rotation pin and are rotated the connection.

The application also aims to provide a technical scheme for carrying out the rapid voltage drop test on the solid-state relay.

In order to solve the above problems, we propose a relay contact voltage drop test fixture.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art, and to solve the technical problem, the invention provides a relay contact voltage drop test fixture, which has the following technical scheme:

the invention provides a relay contact pressure drop test fixture which comprises a test base, wherein a support is arranged on the test base, a mounting plate is fixedly connected to the upper end of the support, an air cylinder is vertically arranged on the mounting plate, a buffering assembly is connected to the air cylinder in a driving mode, a test board is connected to the buffering assembly, a plurality of test columns are mounted on the test board, a plurality of clamping arms are hinged to the test base along the central line array of the test base, and when the test board moves downwards, the driving assembly drives the clamping arms to swing towards the inner side direction of the test base, so that the clamping arms clamp a relay placed on the test base.

In the relay contact voltage drop test fixture, the buffer assembly comprises a buffer column vertically and fixedly connected to the test board, the cylinder is drive-connected with a buffer seat, a slot for the buffer column to be inserted is formed in the buffer seat, a buffer spring is arranged in the slot, and the buffer spring elastically abuts against the buffer column and drives the buffer column to move downwards.

In the relay contact voltage drop test fixture, the positioning pin is penetrated through the end of the buffer column penetrating into the slot, and the buffer seat is provided with a waist-shaped hole for inserting the positioning pin and capable of freely sliding up and down.

In the relay contact voltage drop test fixture, the driving assembly comprises a floating plate, an installation space for installing the floating plate is formed in the test base, a plurality of ejector rods are vertically arranged on the floating plate, the upper ends of the ejector rods protrude above the test base, a plurality of hinge rods are hinged to the floating plate, swing arms are arranged on the clamping arms, and the lower ends of the swing arms are hinged to the upper ends of the hinge rods.

In the relay contact pressure drop test fixture, the surface of the clamping arm is coated with a rubber layer.

In the relay contact voltage drop test fixture, a guide post is vertically arranged in the installation space, a through hole for the guide post to freely pass through is formed in the floating plate, a return spring is sleeved on the guide post, and two ends of the return spring in the elastic direction elastically abut against the floating plate and the inner bottom wall of the installation space respectively.

In the relay contact voltage drop test fixture, a sliding sleeve is embedded on the floating plate and sleeved on the guide post and can freely slide up and down.

Compared with the prior art, the invention has the beneficial effects that: the test board is driven to move downwards by the cylinder, so that the test column can be contacted with a contact on the relay, the current mode of testing through wiring is replaced, the efficiency of detection operation is improved, in addition, the test board moves downwards, the clamping arms are driven by the driving assembly to swing, so that the plurality of clamping arms clamp the relay together, the relay does not move automatically during the detection operation, the precision of the test is improved, in addition, the swinging of the clamping arms is realized through the movement of the test board, the operation is convenient, no additional driving element is required to be arranged, the energy consumption is reduced, in addition, the buffer spring is arranged to generate upward elastic abutting force on the floating board, so that the floating board can move upwards under the natural state or the cylinder rod of the cylinder is shortened, and further, the clamping arms can be automatically unclamped, so that a worker can place the relay between the plurality of clamping arms, and can be convenient for the workman to take out the relay after the test finishes.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the final assembly of the present invention;

FIG. 2 is an enlarged view of a portion of the structure at A in FIG. 1;

fig. 3 is an enlarged schematic view of a partial structure at B in fig. 1.

In the figure: 1-support, 2-cylinder, 3-mounting plate, 4-buffer base, 5-testing column, 6-testing plate, 7-relay, 8-ejector rod, 9-clamping arm, 10-oscillating arm, 11-hinge rod, 12-mounting space, 13-floating plate, 14-guide column, 15-testing base, 16-buffer spring, 17-buffer column, 18-positioning pin, 19-slot, 20-kidney-shaped hole, 21-reset spring and 22-sliding sleeve.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Examples

As shown in figures 1-3, a relay contact pressure drop test fixture comprises a test base 15, a support 1 is arranged on the test base 15, a mounting plate 3 is fixedly connected to the upper end of the support 1, an air cylinder 2 is vertically arranged on the mounting plate 3, a buffer assembly is connected to the air cylinder 2 in a driving manner, a test plate 6 is connected to the buffer assembly, a plurality of test columns 5 are arranged on the test plate 6, four clamping arms 9 are hinged to the test base 15 along the central line array thereof, when the test plate 6 moves downwards, the four clamping arms 9 are driven by a driving assembly to swing towards the inner side direction of the test base 15, so that the clamping arms 9 clamp a relay 7 placed on the test base 15, the relay 7 is located between the four clamping arms 9, the air cylinder 2 acts, the air cylinder rod of the air cylinder 2 extends, and the test plate 6 is driven to move downwards, until the test post 5 offsets with the contact of relay 7, and then can test, survey test panel 6 in the removal process down in addition, drive four clamp arm 9 along with the articulated department of test strip base 15 swing towards the direction of relay 7 by the drive assembly, make clamp arm 9 clamp relay 7 jointly, make relay 7 can not produce the phenomenon of self-propelled removal in the testing process, the precision in the testing process has been guaranteed, survey test panel 6 through buffering subassembly in addition, make test post 5 when the contact of contact relay 7, can not produce great effort, avoid producing great extrusion force to the contact and lead to the contact to damage.

In this embodiment, the buffering subassembly includes the buffering post 17 of vertical rigid coupling on surveying test panel 6, the drive connection has buffering seat 4 on the cylinder 2, set up the slot 19 that supplies buffering post 17 to insert to close on the buffering seat 4, be equipped with buffer spring 16 in the slot 19, buffer spring 16 elasticity supports buffering post 17 and drives buffering post 17 and move down, when the contact of testing post 5 and relay 7, the contact produces reverse effort to testing post 5, produce elasticity through buffer spring 16 to buffering post 17 this moment and support, make buffering post 17 can have elastic buffering, avoid testing post 5 to cause great extrusion force to the contact.

In this embodiment, the locating pin 18 is worn to be equipped with by the one end that buffering post 17 penetrated in slot 19, offers on the buffer seat 4 to supply locating pin 18 to insert and close, and can freely gliding waist shape hole 20 from top to bottom, slides and spacing in waist shape hole 20 through locating pin 18 for reciprocating of buffering post 17 has spacingly, and can avoid test post 5 to produce the rotation by oneself.

In this embodiment, the driving assembly includes floating plate 13, be equipped with on the test base 15 and supply installation space 12 of floating plate 13 installation, vertically be equipped with a plurality of ejector pins 8 on the floating plate 13, the ejector pin 8 upper end is outstanding to test base 15 top, it has four hinge rods 11 to articulate on the floating plate 13, be equipped with swing arm 10 on the clamp arm 9, swing arm 10 lower extreme and hinge rod 11 upper end are articulated, when surveying test panel 6 and moving down, survey test panel 6 bottom surface and will contact with ejector pin 8 upper end, and drive ejector pin 8 and move down, make floating plate 13 move down, during the process of floating plate 13 moving down, will be swung down by hinge rod 11 pulling swing arm 10, and then drive clamp arm 9 and press from both sides tight relay 7.

In this embodiment, the surface of the clamping arm 9 is coated with a rubber layer, and by arranging the rubber layer, the phenomenon that the surface extrusion force of the clamping arm 9 on the relay 7 is too large, so that the surface of the relay 7 is damaged can be avoided.

In this embodiment, a guide post 14 is vertically arranged in the installation space 12, a through hole for the guide post 14 to freely pass through is formed in the floating plate 13, a return spring 21 is sleeved on the guide post 14, two ends of the elastic force direction of the return spring 21 respectively elastically abut against the floating plate 13 and the inner bottom wall of the installation space 12, the floating plate 13 compresses the return spring 21 in the downward moving process, when the test plate 6 moves upward, the return spring 21 is converted from a compression state to an extension state, so that the floating plate 13 moves upward, the swing arm can swing upward, the clamping arm 9 automatically releases the clamp, the structure is simple, and manual operation is not needed.

In this embodiment, the floating plate 13 is embedded with a sliding sleeve 22, the sliding sleeve 22 is sleeved on the guide post 14 and can freely slide up and down, and the sliding sleeve 22 slides on the guide post 14, so that the floating plate 13 is subjected to less mechanical wear of the guide post 14.

In the specific implementation: the relay 7 is placed on the testing base 15, the relay 7 is positioned between the four clamping arms 9, then the cylinder 2 acts, the cylinder rod of the cylinder 2 extends, and drives the testing board 6 to move downwards until the testing column 5 abuts against the contact of the relay 7, so that the testing can be carried out, in addition, when the testing board 6 moves downwards, the bottom surface of the testing board 6 contacts with the upper end of the ejector rod 8 and drives the ejector rod 8 to move downwards, so that the floating board 13 moves downwards, in the downward movement process of the floating board 13, the swinging arm 10 is pulled by the hinge rod 11 to swing downwards, so as to drive the clamping arms 9 to clamp the relay 7, so that the relay 7 cannot move by itself in the detection process, the precision in the testing process is ensured, in the downward movement process of the floating board 13, the reset spring 21 is compressed, when the testing board 6 moves upwards, the reset spring 21 is converted into an extension state from a compression state, thereby moving the floating plate 13 upward so that the swing arm can swing upward, so that the clamp arm 9 automatically releases the clamp.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a relay contact pressure drop test fixture, includes test base (15), its characterized in that, be equipped with a support (1) on test base (15), support (1) upper end rigid coupling has mounting panel (3), vertical cylinder (2) of being equipped with on mounting panel (3), the drive is connected with the buffering subassembly on cylinder (2), be connected with on the buffering subassembly and survey test panel (6), install a plurality of test columns (5) on surveying test panel (6), it has a plurality of tight arms (9) of clamp to follow its central line array to articulate on test base (15), survey test panel (6) when moving down, it is a plurality of by the drive subassembly drive tight arm (9) of clamp towards the inboard direction swing of test base (15), and then make tight arm (9) of clamp press from both sides and tightly place relay (7) on test base (15).

2. The relay contact pressure drop test fixture according to claim 1, wherein the buffer assembly comprises a buffer column (17) vertically and fixedly connected to the test board (6), the cylinder (2) is connected with the buffer base (4) in a driving manner, a slot (19) for the buffer column (17) to be inserted and combined is formed in the buffer base (4), a buffer spring (16) is arranged in the slot (19), and the buffer spring (16) elastically abuts against the buffer column (17) and drives the buffer column (17) to move downwards.

3. The relay contact voltage drop test fixture according to claim 2, wherein a positioning pin (18) is inserted into one end of the buffer column (17) inserted into the slot (19), and a kidney-shaped hole (20) for inserting the positioning pin (18) and capable of sliding up and down is formed in the buffer seat (4).

4. The relay contact pressure drop test fixture according to claim 1, wherein the driving assembly comprises a floating plate (13), the test base (15) is provided with an installation space (12) for installing the floating plate (13), the floating plate (13) is vertically provided with a plurality of ejector rods (8), the upper ends of the ejector rods (8) protrude above the test base (15), the floating plate (13) is hinged with a plurality of hinge rods (11), the clamping arm (9) is provided with a swing arm (10), and the lower end of the swing arm (10) is hinged with the upper ends of the hinge rods (11).

5. A relay contact pressure drop test fixture according to claim 4, characterized in that the clamping arms (9) are surface coated with a rubber layer.

6. The relay contact voltage drop test fixture according to claim 4, wherein a guide post (14) is vertically arranged in the mounting space (12), a through hole for the guide post (14) to freely pass through is formed in the floating plate (13), a return spring (21) is sleeved on the guide post (14), and two ends of the return spring (21) in the elastic force direction elastically abut against the floating plate (13) and the inner bottom wall of the mounting space (12) respectively.

7. The relay contact pressure drop test fixture according to claim 6, wherein a sliding sleeve (22) is embedded on the floating plate (13), and the sliding sleeve (22) is sleeved on the guide post (14) and can freely slide up and down.