Mems accelerometer test tool

Abstract

The utility model relates to a mems accelerometer test tool comprising a fixed pedestal, the fixed pedestal is connected with a support bracket, the top end of the support bracket is connected with a placing bracket, the middle part of the placing bracket is provided with a test window used for testing a product, and the placing bracket is connected with a positioning connection plate used for positioning the product. A positioning column is connected to the positioning connecting plate, a vertical plate is connected to the fixing base, a pressing fixing plate is connected to the vertical plate, a pressing air cylinder is connected to the pressing fixing plate, a driving shaft of the pressing air cylinder is connected with a pressing plate through a connecting column, a pressing column used for pressing a product is connected to the pressing plate, and a testing plate is slidably connected to the supporting support. Probes in contact with product pins are connected to the testing plate, a lifting air cylinder is connected to the fixed base, and a driving shaft of the lifting air cylinder is in driving connection with the testing plate. According to the utility model, the working efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to a MEMS accelerometer testing tool. Background Art

[0002] MEMS accelerometer is an accelerometer manufactured using MEMS technology. Due to the use of micro-electromechanical system technology, its size is greatly reduced. MEMS accelerometer has the advantages of small size, light weight, and low energy consumption. It is suitable for application in the field of geotechnical inclinometer, measuring the displacement of various geotechnical slopes and foundations, and analyzing and predicting the stability of the monitored object. After searching, the patent: Batch clamping tooling and test system and test method of MEMS accelerometer (CN201910333150.7) includes a guide rod, a pressure plate, a carrier plate, a panel, a vertical plate and a bottom plate; the panel is installed on a fixed base composed of a vertical plate and a bottom plate, and the panel includes a support plate and a bakelite pin plate embedded in the upper surface of the support plate, and multiple groups of probes are arranged on the bakelite pin plate; the carrier plate is installed above the panel through an elastic element, and the carrier plate is provided with multiple accelerometer mounting slots, and each mounting slot corresponds to a group of probes; the pressure plate moves up and down along the guide rod set on the edge of the panel, and multiple groups of pressing rods are set on the lower surface of the pressure plate, and the pressure plate is fixed to the panel by clamping buckles. Although the above structure can realize the test of multiple products, it is only for the test of the chip, rather than the test after installation on the substrate (PCB).

[0003] In view of the above-mentioned defects, the designers actively carried out research and innovation in order to create a new structure of MEMS accelerometer test fixture to make it more valuable for industrial use. Utility Model Content

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide a MEMS accelerometer testing tool.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A MEMS accelerometer testing tool comprises a fixed base, a supporting bracket is connected to the fixed base, a placing bracket is connected to the top of the supporting bracket, a test window for testing a product is opened in the middle of the placing bracket, the placing brackets located on the left and right sides of the test window are connected to positioning connecting plates for positioning the product, the positioning connecting plates are connected to positioning columns, the fixed base is connected to a vertical plate, the vertical plate is connected to a clamping fixing plate, the clamping fixing plate is connected to a clamping cylinder, the driving shaft of the clamping cylinder is connected to the clamping plate through a connecting column, the clamping plate is connected to a clamping column for clamping the product, a test board is slidably connected to the supporting bracket below the placing bracket, a probe contacting the product pin is connected to the test board, and a lifting cylinder is connected to the fixed base, and the driving shaft of the lifting cylinder is drivingly connected to the test board.

[0007] Preferably, in the aforementioned MEMS accelerometer testing fixture, the placement bracket is provided with an adjustment hole, and the positioning connection plate is connected to the adjustment hole via an adjustment bolt.

[0008] Preferably, in the MEMS accelerometer testing fixture, a clamping adjustment hole is provided on the clamping plate.

[0009] Preferably, in the MEMS accelerometer testing fixture, the clamping column is connected to the clamping adjustment hole by bolts.

[0010] Preferably, in the MEMS accelerometer testing fixture, the test plate is slidably connected to the support bracket via a linear bearing.

[0011] By means of the above solution, the utility model has at least the following advantages:

[0012] The utility model can realize rapid product testing and effectively improve work efficiency. The utility model can also test substrates (PCB boards) of different sizes, so that it can adapt to different products and achieve the purpose of reducing costs.

[0013] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a top view of the utility model. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0019] Example

[0020] like Figure 1 and Figure 2 As shown, a MEMS accelerometer testing fixture comprises a fixed base 1, the fixed base 1 is connected with a supporting bracket 2, the top of the supporting bracket 2 is connected with a placing bracket 3, the middle part of the placing bracket 3 is provided with a test window 4 for testing a product, the placing bracket 3 located on the left and right sides of the test window 4 are connected with a positioning connecting plate 5 for positioning the product, the positioning connecting plate 5 is connected with a positioning column 6, the fixed base 1 is connected with a vertical plate 7, the vertical plate 7 is connected with a clamping fixing plate 8, the clamping fixing plate 8 is connected with a clamping cylinder 9, the driving shaft of the clamping cylinder 9 is connected with a clamping plate 10 through a connecting column, the clamping plate 10 is connected with a clamping column 11 for clamping the product, a test board 12 is slidably connected with the supporting bracket 2 located below the placing bracket 3, the test board 12 is connected with a probe 13 for contacting the product pin, the fixed base 1 is connected with a lifting cylinder 14, the driving shaft of the lifting cylinder 14 is drivingly connected with the test board 12.

[0021] The placement bracket 3 in the present invention is provided with an adjustment hole, and the positioning connecting plate 5 is connected to the adjustment hole through an adjustment bolt, and can be adjusted according to the size of the product to ensure that the tooling can match it.

[0022] The clamping plate 10 of the present invention is provided with a clamping adjustment hole, and the clamping column 11 is connected to the clamping adjustment hole by bolts. Combined with the above-mentioned adjustment hole, the stability of the product after installation can be ensured.

[0023] The test plate 12 in the present invention is slidably connected to the support bracket 2 via a linear bearing.

[0024] The working principle of the utility model is as follows:

[0025] During specific work, after adjusting the position of the bracket where the positioning connecting plate is placed by adjusting the hole, the product is positioned through positioning, and then the clamping column is pressed down under the drive of the clamping cylinder to achieve the clamping of the substrate (PCB board). At this time, the mems accelerometer that the product needs to test has been positioned above the probe through the positioning connecting plate. At this time, the probe is brought into contact with the pin of the product through the lifting cylinder, and the probe communicates with the back-end detection device (PC) through a data line.

[0026] The power supply of the product in the present invention is a device known to those skilled in the art, and no further description will be given.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the description of this application, it should be noted that the terms "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0029] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or vertical, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A mems accelerometer test fixture, characterized in that: The invention comprises a fixed base (1), the fixed base (1) is connected to a support bracket (2), the top of the support bracket (2) is connected to a placement bracket (3), a test window (4) for testing a product is provided in the middle of the placement bracket (3), the placement bracket (3) is located on the left and right sides of the test window (4) and is connected to a positioning connecting plate (5) for positioning the product, the positioning connecting plate (5) is connected to a positioning column (6), the fixed base (1) is connected to a vertical plate (7), the vertical plate (7) is connected to a pressing fixing plate (8), and the The clamping fixed plate (8) is connected to a clamping cylinder (9), the driving shaft of the clamping cylinder (9) is connected to the clamping plate (10) through a connecting column, the clamping plate (10) is connected to a clamping column (11) for clamping the product, the supporting bracket (2) located below the placing bracket (3) is slidably connected to a test plate (12), the test plate (12) is connected to a probe (13) that contacts the product pin, and the fixed base (1) is connected to a lifting cylinder (14), the driving shaft of the lifting cylinder (14) is drivingly connected to the test plate (12).

2. A MEMS accelerometer testing tool according to claim 1, characterized in that: The placement bracket (3) is provided with an adjustment hole, and the positioning connection plate (5) is connected to the adjustment hole via an adjustment bolt.

3. A MEMS accelerometer testing tool according to claim 1, characterized in that: The pressing plate (10) is provided with a pressing adjustment hole.

4. A MEMS accelerometer testing tool according to claim 1, characterized in that: The pressing column (11) is connected to the pressing adjustment hole by means of bolts.

5. A MEMS accelerometer testing tool according to claim 1, characterized in that: The test plate (12) is slidably connected to the support bracket (2) via a linear bearing.

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