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CN-224233845-U - Pressing mechanism of test fixture and earphone test fixture

CN224233845UCN 224233845 UCN224233845 UCN 224233845UCN-224233845-U

Abstract

The utility model discloses a pushing mechanism of a test fixture and an earphone test fixture, wherein the pushing mechanism of the test fixture comprises a base, a cover plate, a guide assembly and a second connecting assembly, the cover plate can be arranged on the base in a covering mode, the cover plate comprises a base cover part, a floating cover, a pressing head part, a first elastic piece and a second elastic piece, the first elastic piece is arranged between the pressing head part and the floating cover, the pressing head part can float along a first direction relative to the floating cover, the second elastic piece is arranged between the floating cover and the base cover part, the floating cover can float along the first direction relative to the base cover part, the guide assembly comprises a guide post and a guide hole which can be in plug-in fit, the floating cover and the base cover part are detachably connected through the second connecting assembly, and through the floating of the pressing head part and the floating of the floating cover, the pushing process of the pressing head part is decomposed into the movement of the floating cover and the movement of the pressing head part, the horizontal direction error is corrected, and the positioning accuracy of the fixture is improved.

Inventors

  • LIU HUAN
  • Tu Zan
  • CHEN HUIYU
  • LI JUNKAI
  • CHEN HUAQING
  • WANG ZILONG

Assignees

  • 珠海欧森斯传感技术有限公司

Dates

Publication Date
20260512
Application Date
20250515

Claims (10)

  1. 1. Pressing mechanism of test fixture, its characterized in that includes: A base (100) adapted to house a product to be tested; The cover plate (200) is connected to one side of the base (100) in a turnover manner and can be covered on the base (100), the cover plate (200) comprises a base cover part (210), a floating cover (220), a pressure head part (230), a first elastic piece (240) and a second elastic piece (250), the pressure head part (230) can float along a first direction relative to the floating cover (220), the first elastic piece (240) is arranged between the pressure head part (230) and the floating cover (220), the floating cover (220) can float along the first direction relative to the base cover part (210), and the second elastic piece (250) is arranged between the floating cover (220) and the base cover part (210); The guide assembly comprises a guide column (310) and a guide hole (320) which can be in plug-in fit, one of the guide column (310) and the guide hole (320) is arranged on the press head part (230), and the other guide column is arranged on the base (100); and a second connecting component (420), wherein the floating cover (220) and the base cover part (210) are detachably connected through the second connecting component (420).
  2. 2. The pressing mechanism of the test fixture according to claim 1, further comprising a first foolproof hook (511) and a second foolproof hook (521) capable of being separated and combined, wherein the first foolproof hook (511) is slidably connected to the base cover portion (210), the second foolproof hook (521) is connected to the base (100), and the first foolproof hook (511) is linked to the floating cover (220) and is suitable for being switched between a first position and a second position; The first position is a position where the first fool-proof hook (511) is separated from the second fool-proof hook (521) when the floating cover (220) is fixed, and the second position is a position where the first fool-proof hook (511) and the second fool-proof hook (521) are matched when the floating cover (220) is fixed.
  3. 3. The pressing mechanism of a test fixture according to claim 2, further comprising a third elastic member (512), wherein the third elastic member (512) is disposed on a side of the first foolproof hook (511) opposite to the floating cover (220), and the third elastic member (512) abuts against the first foolproof hook (511) and the base cover (210).
  4. 4. The pressing mechanism of a test fixture according to claim 3, wherein the first foolproof hook (511) is provided with a first wedge surface, the floating cover (220) is provided with a second wedge surface, the first wedge surface is in fit and abutting connection with the second wedge surface, and the first wedge surface and the second wedge surface are simultaneously arranged at an angle with the first direction and the moving direction of the first foolproof hook (511).
  5. 5. The pressing mechanism of any one of claims 1 to 4, wherein when the cover plate (200) is covered on the base (100), a distance between an end of the guide post (310) near the base (100) and the hole of the guide hole (320) is in a range of 1mm to 2 mm.
  6. 6. The pressing mechanism of the test fixture according to claim 1, wherein the pressing head portion (230) is provided with an inclined pressing surface (231), and the pressing surface (231) is adapted to and parallel to an inner cavity opening contour of the tested product.
  7. 7. The pressing mechanism of a test fixture according to any one of claims 1 to 4 or 6, wherein the pressure head part (230) is provided with a power supply contact (232), the power supply contact (232) being adapted to be electrically connected with the product under test.
  8. 8. The pressing mechanism of a test fixture according to any one of claims 1 to 4, wherein the base (100) includes a base (110) and a product placement base (120), the product placement base (120) being detachably connected to the base (110).
  9. 9. The pressing mechanism of a test fixture according to claim 8, wherein the product placement base (120) comprises a first placement base (121) and a second placement base (122), the first placement base (121) being provided with a first placement groove, the second placement base (122) being provided with a second placement groove, the first placement groove and the second placement groove being for placing different portions of the product under test.
  10. 10. An earphone testing fixture, characterized by comprising a pressing mechanism of the testing fixture according to any one of claims 1 to 9; The artificial ear (600), the artificial ear (600) connect in base (100), just the sound receiving end of artificial ear (600) orientation on base (100) the sound production end of survey product.

Description

Pressing mechanism of test fixture and earphone test fixture Technical Field The utility model relates to the technical field of test jigs, in particular to a pressing mechanism of a test jig and an earphone test fixture. Background In the related art, aiming at the abutting connection of the pressing head and the tested product in the test fixture, a movable pressing head is generally adopted to be matched with an elastic buffer piece, so that the pressing head can be in self-adaptive abutting connection with the tested product, and the problem of low abutting precision is always caused although the pressing head can be in self-adaptive abutting connection with the tested product in a small range. Disclosure of utility model The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the pushing mechanism of the test fixture and the earphone test fixture, and the errors in the horizontal direction of the pressing head part are compensated through the floating of the pressing head part and the floating of the floating cover, so that the alignment of the guide post and the guide hole is ensured, and the positioning accuracy of the tested product is improved. In one aspect, an embodiment of the present utility model provides a pressing mechanism of a test fixture, including: The base is suitable for placing a tested product; The cover plate is connected to one side of the base in a turnover manner and can be covered on the base, the cover plate comprises a base cover part, a floating cover, a pressing head part, a first elastic piece and a second elastic piece, the pressing head part can float along a first direction relative to the floating cover, the first elastic piece is arranged between the pressing head part and the floating cover, the floating cover can float along the first direction relative to the base cover part, and the second elastic piece is arranged between the floating cover and the base cover part; The guide assembly comprises a guide column and a guide hole which can be in plug-in fit, one of the guide column and the guide hole is arranged on the press head part, and the other guide column and the guide hole are arranged on the base; And the floating cover and the base cover part are detachably connected through the second connecting component. According to some embodiments of the utility model, the pressing mechanism of the test fixture further comprises a first foolproof hook and a second foolproof hook which can be separated and combined, the first foolproof hook is connected to the base cover part in a sliding manner, the second foolproof hook is connected to the base, and the first foolproof hook is linked with the floating cover and is suitable for switching between a first position and a second position; The first position is a position where the first fool-proof hook and the second fool-proof hook are separated when the floating cover is fixed, and the second position is a position where the first fool-proof hook and the second fool-proof hook are matched when the floating cover is fixed. According to some embodiments of the utility model, the pressing mechanism of the test fixture further includes a third elastic member, and the third elastic member is disposed on a side of the first foolproof hook opposite to the floating cover, and the third elastic member abuts against the first foolproof hook and the base cover. According to some embodiments of the utility model, the first foolproof hook is provided with a first wedge surface, the floating cover is provided with a second wedge surface, the first wedge surface is matched and abutted with the second wedge surface, and the first wedge surface and the second wedge surface are simultaneously arranged at an angle with the first direction and the moving direction of the first foolproof hook. According to some embodiments of the utility model, when the cover plate is covered on the base, a distance between an end of the guide post, which is close to the base, and the orifice of the guide hole ranges from 1 mm to 2mm. According to some embodiments of the utility model, the indenter is provided with an inclined abutment surface which is adapted and parallel to the inner cavity opening profile of the product under test. According to some embodiments of the utility model, the ram portion is provided with power supply contacts adapted to be electrically connected to the product under test. According to some embodiments of the utility model, the base includes a base and a product placement base removably connected to the base. According to some embodiments of the utility model, the product placement base comprises a first placement base provided with a first placement groove and a second placement base provided with a second placement groove for placing different parts of the product under test. On the other hand, the embodiment of the utility model also provi