Floating type rotary cover and test fixture

Abstract

The utility model relates to the technical field of test fixtures, and particularly discloses a floating type rotary cover and a test fixture, comprising: a rotary cover body, the bottom of which is provided with an outer accommodating groove; the fixed rotating shaft is mounted on the rotating cover body and penetrates through the outer accommodating groove; the limiting box is located in the outer containing groove and rotationally connected with the rotating cover body around a fixed rotating shaft; wherein an inner accommodating groove is formed in the bottom of the limiting box; the floating pressing block is located in the inner containing groove, and the floating pressing block is provided with a shaft passing hole for the fixed rotating shaft to penetrate through; the shaft passing hole is in clearance fit with the fixed rotating shaft; the pressing block spring assembly is located between the bottom face of the limiting box and the top face of the floating pressing block and used for driving the floating pressing block to be away from the floating pressing block. The floating type rotary cover and the test fixture provided by the utility model can effectively solve the problem that the electronic device is tilted in the process of pressing the electronic device by the existing test fixture.

Description

Technical Field

[0001] The utility model relates to the technical field of test fixtures, in particular to a floating rotary cover and a test fixture. Background Art

[0002] Before the electronic devices such as circuit boards leave the factory, it is necessary to place the electronic devices in a test fixture for electrical testing of the electronic devices to prevent defective products from flowing into the market.

[0003] The existing test fixture includes a fixture base for placing an electronic device, a cover plate rotating shaft installed on the fixture base, and a rotary cover hinged to the fixture base around the cover plate rotating shaft.

[0004] After placing the electronic device in the fixture base, rotating the rotary cover can make the rotary cover cooperate with the fixture base to press the electronic device tightly, and then the electronic device is tested.

[0005] Generally, the top surface of the electronic device is horizontal. During the process of rotating and closing the rotary cover, the position of the rotary cover close to the cover plate rotating shaft will first press down on one end of the electronic device close to the cover plate rotating shaft, causing the end of the electronic device far from the cover plate rotating shaft to tilt upward. That is, during the entire process of rotating and closing the rotary cover, the pressure exerted by the rotary cover on the electronic device is not vertically downward, which may cause damage to the electronic device or the fixture base.

[0006] Therefore, it is necessary to improve the existing test fixture to solve the problem that the electronic device will tilt during the process of pressing the electronic device tightly.

[0007] The above information disclosed in this background section is only included to enhance the understanding of the background of the present disclosure, and thus may include information that does not form the prior art known to those of ordinary skill in the art at present. Summary of the Utility Model

[0008] An object of the utility model is to provide a floating rotary cover and a test fixture, which can effectively solve the problem that the electronic device will tilt during the process of pressing the electronic device tightly by the existing test fixture.

[0009] To achieve the above object, on the one hand, the utility model provides a floating rotary cover, including:

[0010] A rotary cover body, with an outer accommodation groove provided at the bottom of the rotary cover body;

[0011] A fixed rotating shaft, which is installed on the rotary cover body and passes through the outer accommodation groove;

[0012] A limit box, which is located in the outer accommodation groove and is rotatably connected to the rotary cover body around the fixed rotating shaft; wherein, a content accommodation groove is provided at the bottom of the limit box;

[0013] A floating pressing block, which is located in the content accommodation groove, and the floating pressing block is provided with a shaft passing hole for the fixed rotating shaft to pass through; wherein, the shaft passing hole is in clearance fit with the fixed rotating shaft;

[0014] A pressing block spring assembly, which is located between the bottom surface of the limit box and the top surface of the floating pressing block, and is used to drive the floating pressing block away from the floating pressing block.

[0015] Optionally, the shaft passing hole is a long hole extending in the vertical direction.

[0016] Optionally, the pressing block spring assembly includes a plurality of proximal springs and a plurality of distal springs;

[0017] The fixed rotating shaft is located between each proximal spring and each distal spring.

[0018] Optionally, each proximal spring and each distal spring are symmetrically arranged with respect to the fixed rotating shaft.

[0019] Optionally, the number of both the proximal springs and the distal springs is two.

[0020] On the other hand, a test fixture is provided, which includes a fixture base provided with a component placing groove for placing an electronic component, a cover plate rotating shaft installed on the fixture base, and the floating rotary cover hinged to the fixture base around the cover plate rotating shaft.

[0021] Optionally, it further includes:

[0022] A cover plate limit block, which is slidably connected to the fixture base, and a hook portion is provided at one end of the cover plate limit block close to the floating rotary cover;

[0023] A limit block spring, which is located on the side of the cover plate limit block away from the floating rotary cover, and is used to drive the cover plate limit block to slide relative to the fixture base until the hook portion is located above the floating rotary cover.

[0024] Optionally, it further includes:

[0025] A side push block, which is slidably connected to the fixture base;

[0026] A side push rod, one end of which is fixedly connected to the side push block, and the other end extends to the component placing groove and presses the electronic component from the side after being driven.

[0027] A push block spring, which is located on the side of the side push block close to the workpiece placement groove, is used to drive the side push block to drive the side push rod away from the workpiece placement groove.

[0028] Optionally, it further includes:

[0029] A U-shaped lock block, which is slidably connected to the fixture base, and the sliding direction of the U-shaped lock block with respect to the fixture base is perpendicular to the sliding direction of the side push block with respect to the fixture base;

[0030] A lock block spring, which is used to drive the U-shaped lock block to slide to the side of the side push block away from the workpiece placement groove to limit the side push block from moving away from the workpiece placement groove.

[0031] Optionally, the side push rod is a spring probe.

[0032] The beneficial effects of the present utility model are as follows: A floating rotary cover and a test fixture are provided. After placing the electronic device into the fixture body, rotate and close the floating rotary cover. During the process of closing the floating rotary cover, the floating pressing block will first abut against the electronic device;

[0033] When the floating pressing block abuts against the electronic device, under the elastic action of the pressing block spring assembly, the limiting box will rotate around the fixed rotating shaft as the rotary cover body rotates, so that the top surface of the pressing block spring assembly remains horizontal;

[0034] Synchronously, under the elastic action of the pressing block spring assembly, the floating pressing block will not only rotate around the fixed rotating shaft as the rotary cover body rotates, but also move up and down relative to the fixed rotating shaft to a certain extent, so that the bottom surface of the pressing block spring assembly remains horizontal. Therefore, the pressing block spring assembly can drive the floating pressing block to press the electronic device downward flat, thereby avoiding the problem of the electronic device warping. Description of the Drawings

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0036] Figure 1 Structural schematic diagram of the test fixture before the side push assembly presses the electronic device provided in the embodiment;

[0037] Figure 2 Structural schematic diagram of the test fixture after the side push assembly presses the electronic device provided in the embodiment;

[0038] Figure 3 Explosion schematic diagram of the floating rotary cover provided for the embodiment;

[0039] Figure 4 Cross-sectional schematic diagram of the floating rotary cover provided for the embodiment;

[0040] Figure 5 Bottom surface schematic diagram of the floating rotary cover provided for the embodiment;

[0041] Figure 6 Cross-sectional schematic diagram of the test fixture provided for the embodiment.

[0042] In the figure:

[0043] 100, fixture base; 100a, part placement groove; 200, cover plate rotating shaft; 300, floating rotary cover; 400, cover plate limiting block; 400a, hook portion; 500, limiting block spring; 600, side pushing assembly;

[0044] 1, rotary cover body; 101, outer accommodation groove;

[0045] 2, fixed rotating shaft;

[0046] 3, limiting box; 301, inner accommodation groove;

[0047] 4, floating pressing block; 401, shaft passing hole;

[0048] 5, pressing block spring assembly; 501, proximal spring; 502, distal spring;

[0049] 6, side pushing block;

[0050] 7, side push rod;

[0051] 8, push block spring;

[0052] 9, U-shaped locking block;

[0053] 10, locking block spring. Detailed implementation manners

[0054] In the present utility model, referring to "embodiment" means that the specific features, structures or characteristics described in combination with the embodiment can be included in at least one embodiment of the present utility model. The term "embodiment" appearing at various positions in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in the present utility model, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0055] Unless otherwise defined, the technical terms used herein have the same meanings as those commonly understood by those skilled in the technical field to which the present utility model belongs; the use of the relevant terms herein is only for describing specific embodiments and is not intended to limit the present utility model.

[0056] Without further limitation, in the present utility model, the terms "comprising", "including", "having" or other similar expressions used in a statement are intended to cover non-exclusive inclusion. These expressions do not exclude the existence of additional elements in the process, method or product including the said elements, so that the process, method or product including a series of elements may not only include those defined elements, but also include other elements not explicitly listed, or further include elements inherent to such process, method or product.

[0057] In the description of the embodiments of the present utility model, the spatially related expressions such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or the drawings. It is only for the convenience of describing the specific embodiments of the present utility model or facilitating the understanding of the readers, rather than indicating or implying that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present utility model.

[0058] Unless otherwise clearly specified or limited, in the description of the embodiments of the present utility model, the terms "installed", "connected", "joined", "fixed", "set", etc. shall be understood in a broad sense. For example, the said "connection" may be a fixed connection, a detachable connection, or an integral setting; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium; it may be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the technical field to which the present utility model belongs, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0059] The present utility model provides a floating rotary cover and a test fixture, which are applicable to the application scenarios of electrical testing of electronic devices such as circuit boards, and can effectively solve the problem that the existing test fixture will cause the electronic device to warp during the process of pressing the electronic device.

[0060] See Figure 1 and Figure 2, in this embodiment, the test fixture includes a fixture base 100 provided with a component placement groove 100a for placing electronic components, a cover plate rotating shaft 200 installed on the fixture base 100, and a floating rotating cover 300 hinged to the fixture base 100 around the cover plate rotating shaft 200.

[0061] See Figures 3 to 5 , the floating rotating cover 300 includes a rotating cover body 1, a fixed rotating shaft 2, a limit box 3, a floating pressing block 4, and a pressing block spring assembly 5. An outer accommodation groove 101 is provided at the bottom of the rotating cover body 1. The fixed rotating shaft 2 is installed on the rotating cover body 1 and passes through the outer accommodation groove 101. The limit box 3 is located in the outer accommodation groove 101 and is rotatably connected to the rotating cover body 1 around the fixed rotating shaft 2; wherein, an inner accommodation groove 301 is provided at the bottom of the limit box 3. The floating pressing block 4 is located in the inner accommodation groove 301, and the floating pressing block 4 is provided with a shaft passing hole 401 for the fixed rotating shaft 2 to pass through; wherein, the shaft passing hole 401 is in clearance fit with the fixed rotating shaft 2. The pressing block spring assembly 5 is located between the bottom surface of the limit box 3 and the top surface of the floating pressing block 4 and is used to drive the floating pressing block 4 away from the floating pressing block 4.

[0062] For the floating rotating cover 300 and the test fixture provided in this embodiment, after the electronic component is placed in the component placement groove 100a of the fixture body, the floating rotating cover 300 is rotated and closed. During the process of closing the floating rotating cover 300, the floating pressing block 4 will first abut against the electronic component;

[0063] When the floating pressing block 4 abuts against the electronic component, under the elastic action of the pressing block spring assembly 5, the limit box 3 will rotate around the fixed rotating shaft 2 as the rotating cover body 1 rotates, so that the top surface of the pressing block spring assembly 5 remains horizontal;

[0064] Synchronously, under the elastic action of the pressing block spring assembly 5, the floating pressing block 4 will not only rotate around the fixed rotating shaft 2 as the rotating cover body 1 rotates, but also move up and down relative to the fixed rotating shaft 2 to a certain extent, so that the bottom surface of the pressing block spring assembly 5 remains horizontal. Therefore, the pressing block spring assembly 5 can drive the floating pressing block 4 to press the electronic component downward flat, thereby avoiding the problem of the electronic component warping.

[0065] Optionally, the shaft passing hole 401 is a long hole extending in the vertical direction, so that the floating pressing block 4 can move up and down relative to the fixed rotating shaft 2, and further press the electronic component downward.

[0066] In this embodiment, the pressing block spring assembly 5 includes a plurality of proximal springs 501 and a plurality of distal springs 502; the fixed rotating shaft 2 is located between each of the proximal springs 501 and each of the distal springs 502.

[0067] During the closing process of the floating rotary cover 300, the floating pressing block 4 will first abut against the electronic device. Therefore, the proximal spring 501 closer to the cover plate rotating shaft 200 will be compressed first, and the distal spring 502 farther from the cover plate rotating shaft 200 will be compressed later. As the rotary cover body 1 gradually rotates to the horizontal, the difference in the compression amounts of the proximal spring 501 and the distal spring 502 gradually decreases and finally tends to be the same. This ensures that the floating pressing block 4 always presses the electronic device vertically downward during the entire closing process of the floating rotary cover 300, avoiding damage to the electronic device due to warping.

[0068] Furthermore, each of the proximal springs 501 and each of the distal springs 502 are symmetrically arranged with respect to the fixed rotating shaft 2 to improve the uniformity of the force received by the floating pressing block 4. For example, the number of the proximal springs 501 and the distal springs 502 is two each, and a spring is provided at each of the four corners of the floating pressing block 4, which can fully improve the uniformity of the force received by the floating pressing block 4, thereby ensuring a good flat pressing effect.

[0069] Optionally, the test fixture further includes a cover plate limiting block 400 and a limiting block spring 500.

[0070] The cover plate limiting block 400 is slidably connected to the fixture base 100, and a hook portion 400a is provided at one end of the cover plate limiting block 400 close to the floating rotary cover 300. The limiting block spring 500 is located on the side of the cover plate limiting block 400 away from the floating rotary cover 300 and is used to drive the cover plate limiting block 400 to slide relative to the fixture base 100 until the hook portion 400a is located above the floating rotary cover 300.

[0071] After the hook portion 400a moves above the floating rotary cover 300, the floating rotary cover 300 can be locked to prevent the floating rotary cover 300 from being opened during the test, which may affect the test results. When the electronic device needs to be taken out, against the elastic force of the limiting block spring 500, push the cover plate limiting block 400 backward, and then rotate and open the floating rotary cover 300 to take out the electronic device.

[0072] In this embodiment, referring to Figure 2 and Figure 6 , the test fixture further includes a side pushing assembly 600 for pressing the electronic device from the side. The side pushing assembly 600 includes a side pushing block 6, a side pushing rod 7, a pushing block spring 8, a U-shaped locking block 9, and a locking block spring 10.

[0073] The side push block 6 is slidably connected to the fixture base 100. One end of the side push rod 7 is fixedly connected to the side push block 6, and the other end extends to the component placing groove 100a. After being driven, it presses the electronic component from the side. The push block spring 8 is located on the side of the side push block 6 close to the component placing groove 100a, and is used to drive the side push block 6 to drive the side push rod 7 away from the component placing groove 100a;

[0074] The U-shaped lock block 9 is slidably connected to the fixture base 100, and the sliding direction of the U-shaped lock block 9 and the fixture base 100 is perpendicular to the sliding direction of the side push block 6 and the fixture base 100. The lock block spring 10 is used to drive the U-shaped lock block 9 to slide to the side of the side push block 6 away from the component placing groove 100a, so as to limit the side push block 6 from moving away from the component placing groove 100a.

[0075] After the electronic component is placed in the component placing groove 100a, overcoming the elastic force of the push block spring 8, the side push block 6 is pushed, so that the other end of the side push rod 7 extends into the component placing groove 100a and presses the electronic component from the side. At this time, the lock block spring 10 drives the U-shaped lock block 9 to pop outwards, thereby blocking the side push block 6 from moving away from the component placing groove 100a, so that the side push rod 7 can continuously press the electronic component from the side.

[0076] When the electronic component needs to be taken out, first overcome the elastic force of the lock block spring 10, and then push the U-shaped lock block 9, so that the U-shaped lock block 9 disengages from the sliding area of the side push block 6. Under the action of the push block spring 8, the side push block 6 drives the side push rod 7 to slide away from the component placing groove 100a, and then disengages from the electronic component.

[0077] Optionally, if a test spring piece is also provided at the side position of the electronic component, the side push rod 7 can be set as a spring probe for electrical testing through the side push rod 7.

[0078] In summary, the floating rotary cover 300 and the test fixture provided in this embodiment have the following advantages:

[0079] ① During the process of rotating and closing the floating rotary cover 300, under the elastic action of the pressing block spring assembly 5, the limit box 3 will rotate around the fixed rotating shaft 2 as the rotary cover body 1 rotates. The floating pressing block 4 will not only rotate around the fixed rotating shaft 2 as the rotary cover body 1 rotates, but also move up and down relative to the fixed rotating shaft 2 to a certain extent. Thus, the floating pressing block 4 presses the electronic component downwards, thereby avoiding the problem of the electronic component warping;

[0080] ② There is a side push component 600 provided to push the electronic component from the side, avoiding the electronic component from disengaging from the component placing groove 100a during the test process, and also being able to make electrical connection with the electronic component from the side.

[0081] Finally, it should be noted that although the above embodiments have been described in the text and drawings of the specification of this application, the patent protection scope of this application cannot be limited thereby. Any technical solutions resulting from equivalent structure or equivalent process substitution or modification made by using the content recorded in the text and drawings of the specification of this application based on the essential concept of this application, as well as the direct or indirect implementation of the technical solutions of the above embodiments in other related technical fields, etc., are all included in the patent protection scope of this application.

Claims

1. A floating rotary cover, characterized in that, Comprising: A rotary cover body (1), wherein an outer accommodation groove (101) is provided at the bottom of the rotary cover body (1); A fixed rotating shaft (2), which is installed on the rotary cover body (1) and passes through the outer accommodation groove (101); A limit box (3), which is located in the outer accommodation groove (101) and is rotatably connected to the rotary cover body (1) around the fixed rotating shaft (2); wherein, an inner accommodation groove (301) is provided at the bottom of the limit box (3); A floating pressing block (4), which is located in the inner accommodation groove (301), and the floating pressing block (4) is provided with a shaft passing hole (401) for the fixed rotating shaft (2) to pass through; wherein, the shaft passing hole (401) and the fixed rotating shaft (2) are in clearance fit; A pressing block spring assembly (5), which is located between the bottom surface of the limit box (3) and the top surface of the floating pressing block (4) and is used to drive the floating pressing block (4) away from the floating pressing block (4).

2. The floating rotary cap according to claim 1, wherein The shaft passing hole (401) is a long hole extending in the vertical direction.

3. The floating rotary cap according to claim 1, wherein The pressing block spring assembly (5) includes a plurality of proximal springs (501) and a plurality of distal springs (502); The fixed rotating shaft (2) is located between each of the proximal springs (501) and each of the distal springs (502).

4. The floating rotary cap according to claim 3, wherein And each of the proximal springs (501) and each of the distal springs (502) are symmetrically arranged with respect to the fixed rotating shaft (2).

5. The floating rotary cap according to claim 4, characterized in that, The number of both the proximal springs (501) and the distal springs (502) is two.

6. A test fixture, characterized in that, Comprising a jig base (100) provided with a component placing groove (100a) for placing an electronic device, a cover plate rotating shaft (200) installed on the jig base (100), and a floating rotary cover (300) as described in any one of claims 1 - 5 that is hinged to the jig base (100) around the cover plate rotating shaft (200).

7. The test fixture according to claim 6, wherein Further comprising: A cover plate limit block (400), which is slidably connected to the jig base (100), and a hook portion (400a) is provided at one end of the cover plate limit block (400) close to the floating rotary cover (300); A limit block spring (500), which is located on a side of the cover plate limit block (400) away from the floating rotary cover (300) and is used to drive the cover plate limit block (400) to slide relative to the jig base (100) until the hook portion (400a) is located above the floating rotary cover (300).

8. The test fixture according to claim 6, wherein Further comprising: A side pushing block (6), which is slidably connected to the jig base (100); A side push rod (7), one end of which is fixedly connected to the side pushing block (6), and the other end extends to the component placing groove (100a) and presses the electronic device tightly from the side after being driven; A push block spring (8), the push block spring (8) is located on one side of the side push block (6) close to the workpiece placing groove (100a), and is used to drive the side push block (6) to drive the side push rod (7) away from the workpiece placing groove (100a).

9. The test fixture according to claim 8, wherein, It further includes: A U-shaped lock block (9), the U-shaped lock block (9) is slidably connected to the fixture base (100), and the sliding direction of the U-shaped lock block (9) and the fixture base (100) is perpendicular to the sliding direction of the side push block (6) and the fixture base (100); A lock block spring (10), the lock block spring (10) is used to drive the U-shaped lock block (9) to slide to one side of the side push block (6) away from the workpiece placing groove (100a), so as to limit the side push block (6) from moving away from the workpiece placing groove (100a).

10. The test fixture according to claim 8, wherein The side push rod (7) is a spring probe.

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