CN218158053U - Manual test fixture for surface acoustic wave - Google Patents

Abstract

The utility model discloses a manual test fixture of surface acoustic wave relates to surface acoustic wave device technical field. The device comprises a switching base detachably connected with a test circuit board, wherein a clamping assembly used for fixing a tested device is arranged on the switching base and comprises at least three positioning pins, the positioning pins are uniformly arranged at intervals, the axis of each positioning pin penetrates through the central point of the switching base, and the positioning pins can move along the length direction. The utility model discloses a setting up of locating pin removes the locating pin, can change the centre gripping space between the locating pin for the surface acoustic wave device of equidimension not can both be spacing fixed by the centre gripping subassembly, thereby effectual improvement test fixture's commonality need not remove the customization limiting plate according to the unidimensional of surface acoustic wave device, has saved the time, has saved the customization cost of limiting plate.

Description

Manual test fixture for surface acoustic wave

Technical Field

The utility model relates to a surface acoustic wave device technical field, concretely relates to manual test fixture of surface acoustic wave.

Background

The surface acoustic wave device is a solid device which utilizes the characteristics of an acoustic-electric transducer to carry out various processing on acoustic signals transmitted on the surface of a piezoelectric material substrate and complete various functions. To determine the performance of a saw device before it can be used, it needs to be tested. When the prior art tests the surface acoustic wave device, in order to ensure that the device to be tested can not deviate in the test process, the test result is influenced, the limiting plate with the limiting frame is required to be arranged in the middle of the size customization of the device to be tested, when a new product size or a test fixture is damaged, a lot of time is required to be consumed to wait for the limiting plate to be customized and completed, the return period is long, the response is slow, and the condition that the test fixture is not prepared yet can be frequently generated after the product returns. Time and cost are wasted.

SUMMERY OF THE UTILITY MODEL

The above-mentioned not enough to prior art, the utility model provides a manual test fixture of surface acoustic wave that commonality is high.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a manual test fixture of surface acoustic wave, it includes can dismantle the switching base of being connected with test circuit board, is provided with the centre gripping subassembly that is used for fixed device under test on the switching base, and the centre gripping subassembly includes at least three locating pin, and the even interval of locating pin sets up, and the axis of locating pin all passes the central point of switching base, and the locating pin can be followed length direction and removed.

Through removing the locating pin, can change the centre gripping space between the locating pin for surface acoustic wave device of different sizes can both be spacing fixed by the centre gripping subassembly, thereby effectual improvement test fixture's commonality need not customize the limiting plate of the surface acoustic wave device of every size, has saved the cost.

Furthermore, the number of the positioning pins is four, the four positioning pins are arranged at even intervals, and the axes of the four positioning pins are perpendicular to the four sides of the top surface of the switching base respectively.

Further, the centre gripping subassembly still includes four connecting rods, and four connecting rods are located respectively between two adjacent locating pins, and two adjacent locating pins all pass through connecting rod fixed connection, and four connecting rods all can dismantle with the switching base and be connected.

The connecting rod forms frame construction with the locating pin, conveniently takes off the whole switching base of follow of centre gripping subassembly, when changing different test circuit board tests, conveniently carries out the dismouting with the centre gripping subassembly.

Furthermore, the positioning pin comprises a pin seat, and the connecting rod is fixedly connected with the pin seat; be provided with the shifting chute that sets up along length direction on the key seat, and the one end that the shifting chute is close to switching base center is open structure, and the other end of shifting chute is provided with the key seat wall, is provided with the screw hole on the key seat wall, and sliding fit has the round pin piece in the shifting chute, and the one end that switching base center was kept away from to the round pin piece rotates and is connected with the screw rod, and the screw rod is parallel with the round pin piece, and the screw rod is connected with the screw hole cooperation.

Furthermore, one end of the pin block close to the switching base is attached to the side face of the device to be tested. The pin block is attached to the tested device, so that the locating pin can stably limit and fix the tested device.

Furthermore, one end of the screw rod, which is far away from the pin block, is provided with an auxiliary screwing head, and the auxiliary screwing head is positioned on one side, which is far away from the pin block, of the wall of the pin base. The auxiliary hand twisting head helps to twist the screw rod, so that the pin block is conveniently driven to move.

Furthermore, the clamping assembly further comprises a pressing plate, and one side of the pressing plate is rotatably connected with the connecting rod through a rotating shaft.

Furthermore, the surface of the pressure plate is provided with a rubber pressure column for pressing the tested device, and the length of the rubber pressure column is consistent with the thickness of the positioning pin.

Furthermore, a mounting hole is formed in the connecting rod, a mounting bolt is connected to the mounting hole in a matched mode, and the mounting bolt penetrates through the mounting hole to be connected with the switching base in a matched mode.

The utility model has the advantages that:

the utility model discloses a setting up of locating pin removes the locating pin, can change the centre gripping space between the locating pin for the surface acoustic wave device of equidimension not can both be spacing fixed by the centre gripping subassembly, thereby effectual improvement test fixture's commonality need not remove the customization limiting plate according to the unidimensional of surface acoustic wave device, has saved the time, has saved the customization cost of limiting plate.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is an exploded view of the present invention;

fig. 3 is an enlarged schematic view of a point a in fig. 2.

Wherein, 1, testing the circuit board; 2. a transfer base; 3. positioning pins; 4. a connecting rod; 5. a pin boss; 6. a moving groove; 7. a pin base wall; 8. a threaded hole; 9. a pin block; 10. a screw; 11. an auxiliary manual twisting head; 12. pressing a plate; 13. a rotating shaft; 14. pressing a rubber column; 15. and (7) mounting holes.

Detailed Description

The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes may be made apparent to those skilled in the art within the spirit and scope of the present invention as defined and defined by the appended claims.

As shown in fig. 1-2, a manual test fixture for acoustic surface waves comprises a switching base 2 detachably connected with a test circuit board 1 through bolts, wherein a clamping assembly used for fixing a tested device is arranged on the switching base 2, the clamping assembly comprises at least three positioning pins 3, the positioning pins 3 are uniformly arranged at intervals, the axes of the positioning pins 3 penetrate through the central point of the switching base 2, and the positioning pins 3 can move along the length direction.

The locating pins 3 are four, the four locating pins 3 are arranged at equal intervals, and the axes of the four locating pins 3 are perpendicular to the four sides of the top surface of the switching base 2 respectively. The clamping assembly further comprises four connecting rods 4, the four connecting rods 4 are respectively located between two adjacent positioning pins 3, the two adjacent positioning pins 3 are fixedly connected through the connecting rods 4, and the four connecting rods 4 are detachably connected with the switching base 2 through mounting bolts. Connecting rod 4 is L shape, and the corner of connecting rod 4 is provided with mounting hole 15, and mounting hole 15 cooperation is connected with mounting bolt, and mounting bolt passes mounting hole 15 and is connected with the cooperation of switching base 2. The positioning pin 3 comprises a pin seat 5, and the connecting rod 4 is fixedly connected with the pin seat 5; be provided with the shifting chute 6 that sets up along length direction on the key seat 5, and the one end that shifting chute 6 is close to switching base 2 center is open structure, and the other end of shifting chute 6 is provided with key seat wall 7, is provided with screw hole 8 on the key seat wall 7, and sliding fit has round pin piece 9 in the shifting chute 6, and round pin piece 9 keeps away from the one end rotation at switching base 2 center and is connected with screw rod 10, and screw rod 10 is parallel with round pin piece 9, and screw rod 10 is connected with screw hole 8 cooperation. One end of the pin block 9 close to the switching base 2 is attached to the side surface of the tested device.

The clamping assembly further comprises a pressing plate 12, and one side of the pressing plate 12 is rotatably connected with the connecting rod 4 through a rotating shaft 13. There are two rotating shafts 13, the axes of the two rotating shafts 13 are the same, and the two rotating shafts 13 are respectively arranged on the two connecting rods 4. The surface of the pressing plate 12 is provided with a rubber pressing column 14 for pressing the device to be tested, and the length of the rubber pressing column 14 is consistent with the thickness of the positioning pin 3.

The utility model discloses a theory of operation and use flow:

selecting a test circuit board 1 required by a tested device, installing an adapter base 2 on the test circuit board 1 through bolts, and then installing a connecting rod 4 on the adapter base 2 through an installation bolt; the device to be tested is placed in the clamping space at the center of the four positioning pins 3, the auxiliary hand screwing head 11 is screwed, the screw rod 10 is driven to rotate, the screw rod 10 is driven to move towards the direction close to the device to be tested under the matching of the screw rod 10 and the threaded hole 8 in the pin seat wall 7, the screw rod 10 is rotatably connected with the pin block 9, the pin block 9 cannot be driven to rotate by the rotation of the screw rod 10, the pin block 9 is driven to move towards the direction close to the device to be tested by the movement of the screw rod 10, until the four pin blocks 9 are attached and abutted to the device to be tested, the device to be tested is limited by the four pin blocks 9, and the device to be tested is prevented from moving in the horizontal direction. Then, the pressing plate 12 is rotated, the tested device is pressed to the switching base 2 by the rubber pressing column 14 on the pressing plate 12, the center of the switching base 2 is provided with a conductive block for connecting the tested device and the test circuit board 1, one surface of the conductive block is electrically connected with the test circuit board 1, and the other end of the conductive block is electrically connected with the tested device;

after the performance test of the tested device is completed, the pressing plate 12 is turned up, the auxiliary hand screwing head 11 is screwed, the four pin blocks 9 move in the direction away from the tested device to take down the tested device, the clamping assembly and the switching base 2 are dismounted, and the device is restored and stored.

Claims (9)

1. The utility model provides a manual test fixture of surface acoustic wave, its characterized in that includes switching base (2) of can dismantling the connection with test circuit board (1), be provided with the centre gripping subassembly that is used for fixed device under test on switching base (2), the centre gripping subassembly includes at least three locating pin (3), even interval setting in locating pin (3), just the axis of locating pin (3) all passes the central point of switching base (2), length direction removes can be followed in locating pin (3).

2. A manual surface acoustic wave test fixture as claimed in claim 1, wherein there are four said positioning pins (3), four said positioning pins (3) are uniformly spaced, and the axes of four said positioning pins (3) are perpendicular to the four sides of the top surface of the adapting base (2).

3. A surface acoustic wave manual test fixture as claimed in claim 2, characterized in that the clamping assembly further comprises four connecting rods (4), the four connecting rods (4) are respectively located between two adjacent positioning pins (3), two adjacent positioning pins (3) are fixedly connected through the connecting rods (4), and the four connecting rods (4) are detachably connected with the adapting base (2).

4. A manual surface acoustic wave test fixture as claimed in claim 3, characterized in that said positioning pin (3) comprises a pin seat (5), said connecting rod (4) is fixedly connected with the pin seat (5); be provided with on key seat (5) and follow the shifting chute (6) that length direction set up, just one end that shifting chute (6) are close to switching base (2) center is open structure, the other end of shifting chute (6) is provided with key seat wall (7), be provided with screw hole (8) on key seat wall (7), sliding fit has round pin piece (9) in shifting chute (6), the one end rotation that switching base (2) center was kept away from in round pin piece (9) is connected with screw rod (10), screw rod (10) are parallel with round pin piece (9), just screw rod (10) are connected with screw hole (8) cooperation.

5. Surface acoustic wave manual test fixture according to claim 4, characterized in that the end of the pin block (9) near the adapting base (2) abuts the side of the device under test.

6. A surface acoustic wave manual test fixture as claimed in claim 4, characterized in that an end of said screw (10) remote from said pin block (9) is provided with an auxiliary wrench head (11), and said auxiliary wrench head (11) is located on a side of said pin base wall (7) remote from said pin block (9).

7. A surface acoustic wave manual test fixture as claimed in claim 3, characterized in that said clamping assembly further comprises a pressure plate (12), one side of said pressure plate (12) is rotatably connected with the connection rod (4) through a rotation shaft (13).

8. The manual surface acoustic wave test fixture according to claim 7, wherein the surface of said pressing plate (12) is provided with rubber pressing columns (14) for pressing the device to be tested, and the length of said rubber pressing columns (14) is consistent with the thickness of said positioning pins (3).

9. A manual test fixture for surface acoustic wave according to claim 3, characterized in that the connecting rod (4) is provided with a mounting hole (15), the mounting hole (15) is connected with a mounting bolt in a matching way, and the mounting bolt passes through the mounting hole (15) to be connected with the adapter base (2) in a matching way.

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