CN-224218515-U - Test fixture

CN224218515UCN 224218515 UCN224218515 UCN 224218515UCN-224218515-U

Abstract

The utility model relates to the technical field of earphone detection equipment, in particular to a test fixture. The test fixture comprises a bottom plate, a first positioning device, a force measuring device and a second positioning device, wherein the bottom plate is provided with an installation wall surface, the installation wall surface is provided with a sliding rail penetrating through the bottom plate, the first positioning device is arranged on the installation wall surface and is suitable for clamping the sliding arm along a first direction, the force measuring device is arranged on the installation wall surface and is configured to slide along the sliding rail, the force measuring device is provided with a connecting rod, the second positioning device is connected to the end part of the connecting rod, and the second positioning device is suitable for compressing the sliding arm along a second direction perpendicular to the first direction. The force measuring device is configured to push the sliding arm to stretch after being stressed, and the sliding path of the force measuring device and the sliding arm are concentric. The test fixture has the advantages of simple structure and high test precision.

Inventors

PENG JIUGAO
WU HAIQUAN
YAN SEN
Xu Huangli
YUAN KE
Zhan Riquan

Assignees

肇庆德庆冠旭电子有限公司

Dates

Publication Date: 20260508
Application Date: 20250411

Claims (10)

1. Test fixture for test the flexible power of the sliding arm of headphone, its characterized in that includes: The bottom plate is provided with an installation wall surface, and the installation wall surface is provided with a sliding rail penetrating through the bottom plate; a first positioning device, which is arranged on the mounting wall surface and is suitable for clamping the sliding arm along a first direction; the force measuring device is arranged on the mounting wall surface and is configured to slide along the sliding rail, and the force measuring device is provided with a connecting rod; A second positioning device connected to an end of the connecting rod, the second positioning device being adapted to press the sliding arm in a second direction perpendicular to the first direction; The force measuring device is configured to push the sliding arm to stretch after being stressed, and the sliding path of the force measuring device and the sliding arm are concentric.
2. The test fixture of claim 1, wherein the first positioning device comprises: the first positioning plate is connected to the mounting wall surface; A second positioning plate driven by a driving member configured to drive the second positioning plate to move in a direction approaching or moving away from the first positioning plate; The second locating plate can form a clamping groove with the first locating plate after moving towards the direction close to the first locating plate, and the clamping groove is used for accommodating the sliding arm.
3. The test fixture of claim 2, wherein the first positioning plate and the second positioning plate have a curvature directed toward the same, such that an arcuate clamping slot is formed between the first positioning plate and the second positioning plate, the arcuate clamping slot adapting to the curvature of the slider arm.
4. The test fixture of claim 2, wherein the mounting wall is provided with a limiting hole, the first positioning device comprises a mounting plate, the mounting plate is provided with a limiting groove, the limiting groove and the limiting hole are aligned, and a connecting piece is arranged in the limiting groove and the limiting hole in a penetrating manner and used for positioning the mounting plate on the mounting wall; The driving piece is arranged on the mounting plate, and the relative position between the limiting groove and the limiting hole is adjustable, so that the driving piece can move towards the direction close to or far away from the first positioning plate.
5. The test fixture of claim 1, wherein the second positioning device comprises a knob and a positioning platen, the knob configured to adjust movement of the positioning platen in the second direction and a direction opposite the second direction to cause the positioning platen to compress or release the slide arm.
6. The test fixture of claim 1, wherein a push rod is disposed on a side of the force measuring device remote from the connecting rod.
7. The test fixture of claim 1, wherein the mounting wall is provided with a slide along a sliding path of the force measuring device, the slide for reducing friction between the force measuring device and the mounting wall.
8. The test fixture of claim 1, wherein the end of the connecting rod is provided with a first hinge hole, the second positioning device is provided with a second hinge hole, and a hinge shaft is arranged in the first hinge hole and the second hinge hole in a penetrating manner so as to hinge the second positioning device with the connecting rod.
9. The test fixture of claim 1, wherein a rolling element is disposed on a side of the force measuring device adjacent to the mounting wall, and an end of the rolling element remote from the force measuring device is connected to the slide rail, so that the force measuring device can slide along the slide rail.
10. The test fixture of claim 9, wherein the rolling element comprises a connecting post and a ball, the connecting post being connected to the force measuring device, the ball being connected within the slide rail.

Description

Test fixture Technical Field The utility model relates to the technical field of earphone detection equipment, in particular to a test fixture. Background The pulling force of the sliding arm of the headset is very important to user experience, if the pulling force of the sliding arm is too large, the sliding arm is hard in the telescopic process, if the pulling force of the sliding arm is too small, the earmuff part can slide easily, so that the telescopic force test of the sliding arm is required to be carried out when the headset leaves the factory, and the telescopic force of the sliding arm of the headset is ensured to be consistent or within a reasonable force value interval. The current test of the telescopic force of the sliding arm of the headset utilizes a rotating motor to match with a sensor, so that the whole test equipment is relatively expensive, the occupied space is relatively large, and electrical configuration is required, so that the test cost is relatively high. Disclosure of utility model The utility model mainly aims to provide a test fixture and aims to solve the technical problem that the test cost of the existing sliding arm stretching force test is high. In order to achieve the above object, the present utility model provides a test fixture for testing a telescopic force of a sliding arm of a headset, the test fixture comprising: The bottom plate is provided with an installation wall surface, and the installation wall surface is provided with a sliding rail penetrating through the bottom plate; a first positioning device, which is arranged on the mounting wall surface and is suitable for clamping the sliding arm along a first direction; the force measuring device is arranged on the mounting wall surface and is configured to slide along the sliding rail, and the force measuring device is provided with a connecting rod; A second positioning device connected to an end of the connecting rod, the second positioning device being adapted to press the sliding arm in a second direction perpendicular to the first direction; The force measuring device is configured to push the sliding arm to stretch after being stressed, and the sliding path of the force measuring device and the sliding arm are concentric. In some embodiments, the first positioning device comprises: the first positioning plate is connected to the mounting wall surface; A second positioning plate driven by a driving member configured to drive the second positioning plate to move in a direction approaching or moving away from the first positioning plate; The second locating plate can form a clamping groove with the first locating plate after moving towards the direction close to the first locating plate, and the clamping groove is used for accommodating the sliding arm. In some embodiments, the first positioning plate and the second positioning plate have a curvature facing the same direction, such that an arcuate clamping groove is formed between the first positioning plate and the second positioning plate, the arcuate clamping groove adapting to the curvature of the sliding arm. In some embodiments, the mounting wall surface is provided with a limiting hole, the first positioning device comprises a mounting plate, the mounting plate is provided with a limiting groove, the limiting groove and the limiting hole are aligned, a connecting piece is arranged in the limiting groove and the limiting hole in a penetrating way, and the connecting piece is used for positioning the mounting plate on the mounting wall surface; The driving piece is arranged on the mounting plate, and the relative position between the limiting groove and the limiting hole is adjustable, so that the driving piece can move towards the direction close to or far away from the first positioning plate. In some embodiments, the second positioning device comprises a knob and a positioning platen, the knob configured to adjust movement of the positioning platen in the second direction and in a direction opposite the second direction to cause the positioning platen to compress or release the sliding arm. In some embodiments, a push rod is provided on a side of the force measuring device remote from the connecting rod. In some embodiments, a sliding vane is provided along the sliding path of the force measuring device, the sliding vane being configured to reduce friction between the force measuring device and the mounting wall. In some embodiments, the end of the connecting rod is provided with a first hinge hole, the second positioning device is provided with a second hinge hole, and a hinge shaft is arranged in the first hinge hole and the second hinge hole in a penetrating manner so as to hinge the second positioning device with the connecting rod. In some embodiments, a rolling element is disposed on a side of the force measuring device, which is close to the mounting wall surface, and one end of the rolling element, which is far away from the force measuring dev