Constant-temperature test fixture

Abstract

The utility model relates to the technical field of chip packaging testing, and particularly provides a constant-temperature testing clamp which comprises a constant-temperature clamp shell, a constant-temperature clamp base, a constant-temperature insulation connecting block and a constant-temperature clamp top clamping block. The first cavity is internally provided with an insulation block installation groove used for installing the constant-temperature insulation connecting block, the other end of the constant-temperature clamp base is provided with a containing groove used for containing a tested object, and the containing groove and the constant-temperature clamp top clamping block form a limiting space used for limiting the tested object. The constant-temperature clamp shell is provided with a second cavity with one end open and used for containing the constant-temperature clamp base, after the constant-temperature clamp base and the constant-temperature clamp shell are buckled, a constant-temperature testing space is formed by the first cavity and the second cavity, and the effect of stabilizing the testing temperature is achieved by installing the constant-temperature maintaining assembly for the whole clamp. And the spectrum and power stability during the TO test is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of chip packaging and testing technology, and specifically provides a constant temperature testing fixture. Background Technology

[0002] With the rapid development of the telecommunications industry, fiber optic communication technology is constantly evolving towards ultra-high capacity, intelligence, and integration, aiming to achieve intelligent network parameter monitoring and ultra-long-distance, ultra-high capacity information transmission. Furthermore, with the continuous advancement of integration technology and optical communication devices, the entire fiber optic communication industry is rapidly developing towards high performance and low cost. This has also driven the rapid upgrading of optical modules.

[0003] Early transistors mostly used coaxial packaging, which was later adopted in optical communication and called TO (TransistorOutline) packaging. Existing TO testing makes it difficult to guarantee the temperature stability of the test environment, resulting in differences between test results and actual use. Therefore, there is an urgent need for a device that can provide a stable test temperature for the test environment. Utility Model Content

[0004] To solve the above problems, this utility model provides a constant temperature test fixture. By installing a constant temperature adjustment device on the entire fixture, the test temperature is stabilized, which greatly improves the spectral and power stability during TO testing.

[0005] A constant temperature testing fixture includes a constant temperature fixture shell, a constant temperature fixture base, a constant temperature insulating connecting block, and a constant temperature fixture top locking block, wherein...

[0006] The thermostatic clamp base has a first cavity with one end open and accommodating the thermostatic insulating connecting block. The first cavity is provided with an insulating block mounting groove for installing the thermostatic insulating connecting block. The other end of the thermostatic clamp base has a placement groove for placing the object to be tested. The top locking block of the thermostatic clamp is located at the other end of the thermostatic clamp base and is arranged adjacent to the placement groove. The placement groove and the top locking block of the thermostatic clamp constitute a limiting space for limiting the object to be tested.

[0007] The thermostatic fixture housing has a second cavity with one end open and accommodating the thermostatic fixture base. After the thermostatic fixture base and the thermostatic fixture housing are fastened together, the first cavity and the second cavity constitute a thermostatic testing space. The other end of the thermostatic fixture housing is provided with a thermostatic holding component for adjusting the temperature of the thermostatic testing space.

[0008] As a preferred embodiment, the thermostatic clamp housing has a fixed threaded hole at one end, and the other end of the thermostatic clamp base has a mounting surface. The placement groove is located on the mounting surface, and the mounting surface has a fixed through hole corresponding to the fixed threaded hole.

[0009] As a preferred embodiment, the constant temperature holding assembly includes a thermoelectric cooler for generating a constant temperature and a blower for supplying constant temperature air to the constant temperature test space. The constant temperature fixture housing has a fan mounting hole for fixing the blower and a thermoelectric cooler placement slot for mounting the thermoelectric cooler.

[0010] As a preferred embodiment, the second cavity is cylindrical, and the outer peripheral wall of the first cavity is correspondingly cylindrical, with the outer peripheral wall of the first cavity being accommodated within the second cavity.

[0011] As a preferred embodiment, the constant temperature insulating connection block includes a pin electrode placement area for placing the electrode pins of the object under test, a plug-in module for cooperating with the mounting groove of the insulating block, and a reserved mounting hole for installation and fixation.

[0012] As a preferred embodiment, the top clamp of the thermostatic fixture has a limiting groove for limiting the position against the object being measured and a connecting hole for installation. The top clamp of the thermostatic fixture is rotatably mounted on the mounting surface by screws and the connecting hole.

[0013] As a preferred embodiment, the thermostatic clamp has two top locking blocks, which are symmetrically installed on both sides of the placement slot.

[0014] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0015] A constant temperature test fixture includes a constant temperature fixture shell, a constant temperature fixture base, a constant temperature insulating connecting block, and a constant temperature fixture top locking block. The constant temperature fixture base has a first cavity with one end open and accommodating the constant temperature insulating connecting block. The first cavity is provided with an insulating block mounting groove for mounting the constant temperature insulating connecting block. The other end of the constant temperature fixture base has a placement groove for placing the test object. The placement groove and the constant temperature fixture top locking block constitute a limiting space for limiting the test object. The constant temperature fixture shell has a second cavity with one end open and accommodating the constant temperature fixture base. After the constant temperature fixture base and the constant temperature fixture shell are fastened together, the first cavity and the second cavity constitute a constant temperature test space. The other end of the constant temperature fixture shell is provided with a constant temperature holding component for adjusting the temperature of the constant temperature test space. By installing a constant temperature holding component on the entire fixture, the test temperature is stabilized, which greatly improves the spectral and power stability during TO testing. Attached Figure Description

[0016] Figure 1 This is an exploded view of the structure of a constant temperature testing fixture according to an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the constant temperature fixture shell in a constant temperature testing fixture according to an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the structure of a constant temperature fixture base in a constant temperature testing fixture according to an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the structure of a constant temperature insulating connecting block in a constant temperature testing fixture according to an embodiment of the present utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the top clamping block of a constant temperature test fixture according to an embodiment of the present utility model.

[0021] The reference numerals in the figures include:

[0022] Thermostatic clamp housing 100, fixed threaded hole 110, fan mounting hole 120, second cavity 130, reserved wire groove 140, semiconductor cooler placement groove 150;

[0023] Thermostatic clamp base 200, placement groove 210, fixing through hole 220, insulating block mounting groove 230, reserved wire groove 240, pressure block fixing threaded hole 250, first cavity 260, mounting surface 270;

[0024] Thermostatic insulating connector 300, reserved mounting hole 310, pin electrode placement area 320, plug-in module 330;

[0025] Thermostatic clamp top locking block 400, connecting hole 410, limit groove 420 Detailed Implementation

[0026] In the following description, embodiments of the present invention will be described with reference to the accompanying drawings. In the description below, the same modules are denoted by the same reference numerals. Where the same reference numerals are used, their names and functions are also the same. Therefore, their detailed description will not be repeated.

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and do not constitute a limitation thereof.

[0028] Combination Figure 1 and 2As shown, this embodiment of the present invention provides a constant temperature testing fixture, including a constant temperature fixture shell 100, a constant temperature fixture base 200, a constant temperature insulating connecting block 300, and a constant temperature fixture top locking block 400. The constant temperature fixture base 200 has a first cavity 260 with one end open to accommodate the constant temperature insulating connecting block 300. The first cavity 260 has an insulating block mounting groove 230 for mounting the constant temperature insulating connecting block 300. The other end of the constant temperature fixture base 200 has a placement groove 210 for placing the object to be tested. The object to be tested can be... For TO lasers and other TO tests, the constant temperature insulating connecting block 300 can be adapted to replace different TO test bases, thus enabling the testing of various models of TO lasers. The constant temperature fixture top locking block 400 is located at the other end of the constant temperature fixture base 200 and is adjacent to the placement slot 210. The placement slot 210 and the constant temperature fixture top locking block 400 constitute a limiting space for limiting the test object. The test object is placed in the limiting space, and the limiting effect of the placement slot 210 and the constant temperature fixture top locking block 400 makes the test object tightly abut against the fixture.

[0029] Combination Figure 2 As shown, the thermostatic fixture housing 100 has a second cavity 130 with one end open and accommodating the thermostatic fixture base 200. The second cavity 130 can fit against the outer surface of the thermostatic fixture base 200. After the thermostatic fixture base 200 and the thermostatic fixture housing 100 are fastened together, the first cavity 260 and the second cavity 130 can form a thermostatic test space. The other end of the thermostatic fixture housing 100 is provided with a thermostatic holding component (not shown in the figure) for adjusting the temperature of the thermostatic test space. The thermostatic holding component can continuously adjust the temperature of the thermostatic test space, keep the test environment temperature constant, and achieve the effect of stabilizing the test temperature, which greatly improves the spectral and power stability during TO testing.

[0030] Combination Figure 2 and 3 As shown, in some embodiments, the second cavity 130 is cylindrical, and the outer peripheral wall of the first cavity 260 is correspondingly cylindrical. The outer peripheral wall of the first cavity 260 is accommodated in the second cavity 130. The insulating block mounting groove 230 can be set on the inner peripheral wall of the first cavity 260, so that the constant temperature insulating connecting block 300 can be better fixed in the constant temperature test space, which is convenient for maintaining the constant temperature of the test environment.

[0031] Combination Figure 1 and 2As shown, in some embodiments, in order to facilitate the combined installation of the thermostatic clamp housing 100 and the thermostatic clamp base 200, the thermostatic clamp housing 100 has a fixing threaded hole 110 at one end opening, and the thermostatic clamp base 200 has a mounting surface 270 at the other end. The mounting surface 270 has a fixing through hole 220 corresponding to the fixing threaded hole 110. The two can be fixed by bolt connection. The placement groove 210 for placing the object to be measured can adopt a structure adapted to the surface of the object to be measured. For example, it can adopt a cylindrical hole. The placement groove 210 is set on the mounting surface 270, preferably at the geometric center of the mounting surface 270.

[0032] Combination Figure 2 As shown, in some embodiments, the constant temperature holding assembly includes a thermoelectric cooler for generating a constant temperature and a blower for delivering constant temperature air to the constant temperature test space. The temperature of the entire fixture is regulated by the thermoelectric cooler. The thermoelectric fixture housing 100 has a fan mounting hole 120 for fixing the blower and a thermoelectric cooler placement slot 150 for mounting the thermoelectric cooler. The blower is fixed through the fan mounting hole 120, and the thermoelectric cooler is placed in the thermoelectric cooler placement slot 150 for fixation. Preferably, a heat sink can be further added to the thermoelectric fixture housing 100 to quickly transfer the heat generated by the thermoelectric cooler.

[0033] In some embodiments, the material of the thermostatic insulating connecting block 300 can be bakelite, the purpose of which is to prevent the current from being electrically connected to the thermostatic clamp housing 100, thus maintaining insulation. Those skilled in the art can choose flexibly as needed, and there is no limitation thereto.

[0034] Combination Figure 3 and 4 As shown, the thermostatic insulating connection block 300 includes a pin electrode placement area 320 for placing the electrode pins of the test object, a plug-in module 330 for cooperating with the insulating block mounting groove 230, and a reserved mounting hole 310 for installation and fixing. The pin electrode placement area 320 can be used to install electrodes that match the TO pins, and can also be connected to the wires of the thermostatic holding assembly below. The wires are connected to the outside from the reserved wire groove 140 on the thermostatic fixture housing 100 and the reserved wire groove 240 on the thermostatic fixture base 200. Those skilled in the art should understand this, so it will not be described in detail.

[0035] Combination Figure 5As shown, in some embodiments, the top clamping block 400 of the thermostatic fixture has a limiting groove 420 for limiting the position against the object being measured and a connecting hole 410 for installation. A corresponding pressure block fixing threaded hole 250 is provided on the mounting surface 270. The top clamping block 400 of the thermostatic fixture is rotatably mounted on the mounting surface 270 by screws, with the pressure block fixing threaded hole 250 and the connecting hole 410 connected. The rotation direction of the top clamping block 400 of the thermostatic fixture is along the plane of the mounting surface 270. After the object being measured is placed in the placement groove, the thermostatic fixture is then... The top clamping block 400 of the fixture limits the position of the object to be measured. The limiting groove 420 on the top clamping block 400 of the thermostatic fixture can prevent the position of the object to be measured from shifting. For more stable limiting, there are two top clamping blocks 400 of the thermostatic fixture. The two top clamping blocks 400 of the thermostatic fixture are symmetrically installed on both sides of the placement groove. The two limiting grooves 420 can better clamp the object to be measured. When limiting, the two top clamping blocks 400 of the thermostatic fixture work together to provide limiting for the object to be measured by rotating, so that the fixture and the object to be measured are in closer contact.

[0036] This utility model provides a constant temperature testing fixture, including a constant temperature fixture shell 100, a constant temperature fixture base 200, a constant temperature insulating connecting block 300, and a constant temperature fixture top locking block 400. The constant temperature fixture base 200 has a first cavity 260 with one end open and accommodating the constant temperature insulating connecting block 300. The first cavity 260 is provided with an insulating block mounting groove 230 for mounting the constant temperature insulating connecting block 300. The other end of the constant temperature fixture base 200 has a placement groove for placing the object to be tested. The constant temperature fixture top locking block 400 is located at the other end of the constant temperature fixture base 200 and is arranged adjacent to the placement groove. The slot and the top locking block 400 of the thermostatic fixture constitute a limiting space for limiting the test object. The thermostatic fixture housing 100 has a second cavity 130 with one end open and accommodating the thermostatic fixture base 200. After the thermostatic fixture base 200 and the thermostatic fixture housing 100 are fastened together, the first cavity 260 and the second cavity 130 constitute a thermostatic test space. The other end of the thermostatic fixture housing 100 is provided with a thermostatic holding component for adjusting the temperature of the thermostatic test space. By installing a thermostatic adjustment device on the entire fixture, the test temperature is stabilized, which greatly improves the spectral and power stability during TO testing.

[0037] Although embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

[0038] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A thermostatic test fixture, characterized by, The constant temperature clamp shell, the constant temperature clamp base, the constant temperature insulation connecting block and the constant temperature clamp top clamping block are included, wherein, The constant temperature clamp base has a first cavity with an open end and containing the constant temperature insulation connecting block, the first cavity is provided with an insulation block mounting groove for mounting the constant temperature insulation connecting block, the other end of the constant temperature clamp base has a placement groove for placing the measured object, the constant temperature clamp top clamping block is located at the other end of the constant temperature clamp base and is adjacent to the placement groove, and the placement groove and the constant temperature clamp top clamping block constitute a limiting space for limiting the measured object. The constant temperature clamp shell has a second cavity with an open end and containing the constant temperature clamp base, the first cavity and the second cavity constitute a constant temperature test space after the constant temperature clamp base is engaged with the constant temperature clamp shell, and the other end of the constant temperature clamp shell is provided with a constant temperature maintaining assembly for temperature adjustment of the constant temperature test space.

2. The constant temperature test fixture of claim 1, wherein, The constant temperature clamp shell has a fixed threaded hole at an open end, the other end of the constant temperature clamp base has a mounting surface, the placement groove is located on the mounting surface, and the mounting surface is provided with a fixed through hole corresponding to the fixed threaded hole.

3. The constant temperature test fixture of claim 1, wherein, The constant temperature maintaining assembly includes a semiconductor refrigerator for generating constant temperature and a supply fan for delivering constant temperature air to the constant temperature test space, the constant temperature clamp shell has a fan mounting hole for fixing the supply fan and a semiconductor refrigerator placement groove for mounting the semiconductor refrigerator.

4. The constant temperature test fixture of claim 1, wherein, The second cavity is cylindrical, and the outer peripheral wall of the first cavity corresponds to a cylindrical shape, and the outer peripheral wall of the first cavity is contained in the second cavity.

5. The constant temperature test fixture of claim 1, wherein, The constant temperature insulation connecting block includes a pin electrode placement area for placing the electrode pin of the measured object, a plug-in module for cooperating with the insulation block mounting groove, and a reserved mounting hole for mounting and fixing.

6. The constant temperature test fixture of claim 1, wherein, The constant temperature clamp top clamping block has a limiting groove for limiting against the measured object and a connecting hole for mounting, and the constant temperature clamp top clamping block is rotatably mounted on the mounting surface through a screw and the connecting hole.

7. The constant temperature test fixture of claim 6, wherein, The constant temperature clamp top clamping block is two, and the two constant temperature clamp top clamping blocks are symmetrically mounted on both sides of the placement groove.

Images