Novel grounding mechanism

Abstract

The utility model discloses a novel grounding mechanism, which belongs to the technical field of circuit board impedance testing, and comprises a fixed block with a first plane and a movable block with a second plane, the fixed block is provided with an inner cavity, the movable block is inserted into the inner cavity, and the second plane on the movable block is exposed outside the first plane; after the movable block is subjected to external force, the second plane can move backwards or incline towards one side relative to the first plane. The fixed block is provided with a reset assembly which enables the movable block to restore to the original shape. Through the mutual cooperation of the movable block and the fixed block, the structure is simple, the telescopic movement of the movable block can be in good contact with the probe, and the stability of the circuit board blocking test is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit board impedance testing and relates to a novel grounding mechanism. Background Art

[0002] A grounding device is required in the circuit board impedance test to prevent static electricity accumulation from damaging the test equipment and circuit board and ensure the safety of the test. When the current grounding device is tangent to two 3mm diameter probes, the center distance between the two probes can be adjusted between 4 and 6mm, which is prone to poor contact with the grounding device, affecting the stability of the circuit board impedance test.

[0003] Therefore, it is necessary to improve the prior art to overcome the defects in the prior art. Utility Model Content

[0004] The utility model aims to provide a novel grounding mechanism, which improves the stability of contact between the grounding mechanism and the probe by improving the structure thereof.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] A novel grounding mechanism comprises a fixed block with a first plane and a movable block with a second plane, wherein the fixed block is provided with an inner cavity, the movable block is inserted into the inner cavity, and the second plane on the movable block is exposed outside the first plane; when the movable block is acted upon by an external force, the second plane can be moved backward or tilted to one side relative to the first plane; and a reset component for restoring the movable block to its original state is provided on the fixed block.

[0007] As a further improvement of an embodiment of the utility model, the second plane is in a long strip structure.

[0008] As a further improvement of an embodiment of the utility model, the fixed block is a fixed aluminum block, and the movable block is a movable copper block.

[0009] As a further improvement of an embodiment of the utility model, the reset assembly includes a reset spring and a baffle, the baffle is fixed on the fixed block, one end of the reset spring abuts against the baffle, and the other end of the reset spring abuts against the movable block; the gap between the baffle and the movable block is distributed so that the movable block can tilt or move backward after being acted upon by an external force.

[0010] As a further improvement of an embodiment of the utility model, two spring positioning grooves are provided on the movable block; the two spring positioning grooves are distributed on the side away from the second plane and are symmetrically distributed along the central axis of the movable block; the number of the return springs is two, which are respectively arranged in the two spring positioning grooves.

[0011] As a further improvement of an embodiment of the present utility model, a stop block is provided in the inner cavity of the fixed block. The stop block is located at the upper end of the inner cavity. The movable block is provided in the inner cavity below the stop block. The baffle is locked on the stop block by screws.

[0012] As a further improvement of an embodiment of the present utility model, a positioning groove is provided at the lower end of the stop block. A positioning block corresponding to the positioning groove is provided on the movable block. The positioning block abuts against the positioning groove under the action of a return spring.

[0013] As a further improvement of an embodiment of the present utility model, the positioning grooves are centrally distributed on the stop block.

[0014] As a further improvement of an embodiment of the present utility model, the second plane inclines to one side relative to the first plane under a stressed state, so that there is a yaw of plus or minus 2 degrees between the second plane and the first plane.

[0015] Adopting the above technical solution, the following beneficial effects are achieved: Through the mutual cooperation between the movable block and the fixed block, the structure is simple. The telescopic movement of the movable block can be well in contact with the probe, thereby improving the stability of the circuit board blocking test. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can be obtained according to the provided drawings.

[0017] The structures, ratios, sizes, etc. illustrated in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions under which the present utility model can be implemented. Therefore, they do not have a substantial technical meaning. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present utility model.

[0018] Figure 1 It is a three-dimensional schematic diagram of the first state provided by the present utility model.

[0019] Figure 2 It is a three-dimensional schematic diagram of the second state provided by the present utility model.

[0020] Figure 3 It is a schematic diagram of the main view state structure provided by the present utility model.

[0021] Figure 4 Explosion structure schematic diagram provided by the present utility model.

[0022] Figure 5 Stereoscopic schematic diagram of the first state of the movable block provided by the present utility model.

[0023] Figure 6 Stereoscopic schematic diagram of the second state of the movable block provided by the present utility model.

[0024] Figure 7 Stereoscopic schematic diagram of the first state of the fixed block provided by the present utility model.

[0025] Figure 8 Schematic diagram of the structure of the product provided by the present utility model when it is in an unloaded state.

[0026] Figure 9 Schematic diagram of the first state of the structure of the product provided by the present utility model when it is in a loaded state.

[0027] Figure 10 Schematic diagram of the second state of the structure of the product provided by the present utility model when it is in a loaded state.

[0028] Figure 11 Schematic diagram of the third state of the structure of the product provided by the present utility model when it is in a loaded state.

[0029] In the figure: 1 - fixed block; 2 - movable block; 3 - retaining piece; 4 - return spring; 5 - screw;

[0030] 11 - fixed block body; 12 - inner cavity; 13 - retaining block; 14 - positioning groove; 15 - screw hole;

[0031] 21 - movable block body; 22 - spring positioning groove; 23 - positioning block; 24 - boss;

[0032] S1 - first plane; S2 - second plane. Detailed implementation manners

[0033] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0034] It should be pointed out that unless otherwise specified, all technical and scientific terms used in the present application have the same meanings as those commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0035] In the present utility model, unless otherwise specified, the orientation terms such as "upper, lower, top, bottom" generally refer to the directions shown in the drawings, or to the vertical, perpendicular or gravitational directions of the components themselves; similarly, for the convenience of understanding and description, "inner, outer" refer to the inner and outer of the contours of the respective components themselves, but the above orientation terms are not used to limit the present utility model. Embodiment

[0036] Refer to Figures 1-4 As shown, a novel grounding mechanism includes a fixed block 1 having a first plane S1 and a movable block 2 having a second plane S2. An inner cavity is provided on the fixed block 1, and the movable block 2 is inserted into the inner cavity. When assembled into a finished product, the second plane S2 on the movable block 2 is exposed outside the first plane S1 for contacting the probe. When an external force acts on the movable block 2 (the probe acts on the second plane S2), the second plane S2 moves backward or tilts to one side relative to the first plane S1. At the same time, since a reset assembly for restoring the movable block 2 to its original state is provided on the fixed block 1. Therefore, when the second plane S2 is forced to move backward or tilt to one side, the reset assembly will provide a reverse force to the movable block 2, making the contact of the second plane S2 more stable.

[0037] In this embodiment, the second plane S2 has a strip-like structure, so that it has enough space to contact the probe, improving the application range of the grounding mechanism and enabling it to meet the use requirements of probes with different spacings.

[0038] Furthermore, the reset assembly includes a reset spring 4 and a retaining piece 3. The retaining piece 3 is locked to the fixed block 1 by a screw 5. One end of the reset spring 4 abuts against the retaining piece 3, and the other end of the reset spring 4 abuts against the movable block 2. Enough clearance is left between the retaining piece 3 and the movable block 2, so that the movable block 2 has enough space to tilt or move backward when an external force acts on it.

[0039] In this embodiment, the fixed block 1 is made of a fixed aluminum block, the movable block 2 is made of a movable copper block, and the screw 5 is a stainless steel socket head cap screw.

[0040] Combined with Figure 5 、 Figure 6 As shown, the movable block 2 includes a movable block body 21. Two spring positioning grooves 22 are provided on the back surface of the movable block body 21 for placing the reset spring 4. The two spring positioning grooves 22 are symmetrically distributed along the central axis of the movable block. The front surface of the movable block body 21 has a convex platform 24 protruding outward. The outer side surface of the convex platform 24 is the second plane S2. A positioning block 23 is provided at the upper end of the movable block body 21, and the positioning block 23 is centrally distributed on the movable block body 21. The movable block body 21, the convex platform 24, and the positioning block 23 are an integral structure, that is, the movable block 2 is integrally formed.

[0041] Combined with Figure 7 As shown, the fixed block 1 includes a fixed block body 11. There is a through cavity 12 in the front and rear directions on the fixed block body 11. A stop block 13 is arranged in the cavity 12, and the stop block 13 is located at the upper end of the cavity 12. The movable block 2 is inserted into the cavity below the stop block 13. There is a screw hole 15 on the stop block 13, and correspondingly, a corresponding screw hole is arranged on the retaining piece 3. The screw passes through the screw hole on the retaining piece 3 and is locked in the screw hole 15 to fix the position of the retaining piece 3.

[0042] In this embodiment, the stop block 13 has a limiting effect on the movable block 2. Specifically, a positioning groove 14 is arranged at the lower end of the stop block 13, and the positioning groove 14 corresponds to the positioning block 23 on the movable block. After assembly, the positioning block 23 abuts against the positioning groove 14 under the action of the return spring 4, thereby limiting the farthest distance that the second plane S2 moves outward.

[0043] Preferably, the stop block 13 and the fixed block body 11 are of an integral structure, that is, the fixed block 1 is integrally formed.

[0044] Combined with Figures 8-11 As shown, when the assembled grounding mechanism is in use, the probe acts on the second plane S2, providing an external force on the movable block 2. When the external force acts on the middle position of the movable block 2, the movable block 2 moves backward as a whole. As Figure 8 When not under force, the distance between the second plane S2 and the first plane S1 is H1, and the value of H1 is 1.3 mm. Figure 9 When in the stressed state, the distance between the second plane S2 and the first plane S1 is H2, and the value of H2 is 1.1 mm. It can be seen that in this embodiment, the external force can move the movable block 2 backward as a whole by 0.2 mm.

[0045] As Figure 10 When the external force F1 acts on the left side of the second plane S2, the second plane S2 tilts to the left, and the tilt angle is D1, and the above D1 is 2 degrees. As Figure 11 When the external force F2 acts on the right side of the second plane S2, the second plane S2 tilts to the right, and the tilt angle is D2, and the above D2 is 2 degrees. It can be seen that when the second plane S2 tilts to one side relative to the first plane S1 in the stressed state, there is a yaw of plus or minus 2 degrees between the second plane S2 and the first plane S1.

[0046] In summary, the embodiments of the present utility model achieve the following technical effects:

[0047] A return spring provides buffer support for the movable block, enabling the movable block to have elastic telescopic movement. When an external force probe acts on the second plane of the movable block, the return spring will provide a reaction force for the movable block, enabling full contact between the probe and the movable block, thereby improving the stability of the circuit board blockage test.

[0048] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0049] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0050] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A novel grounding mechanism, characterized in that: It comprises a fixed block with a first plane and a movable block with a second plane, wherein the fixed block is provided with an inner cavity, the movable block is inserted into the inner cavity, and the second plane on the movable block is exposed outside the first plane; when the movable block is acted upon by an external force, the second plane can move backward or tilt to one side relative to the first plane; and a reset component for restoring the movable block to its original state is provided on the fixed block.

2. The novel grounding mechanism according to claim 1, characterized in that: The second plane is in a long strip structure.

3. The novel grounding mechanism according to claim 1 or 2, characterized in that: The fixed block is a fixed aluminum block, and the movable block is a movable copper block.

4. The novel grounding mechanism according to claim 3, characterized in that: The reset assembly includes a reset spring and a baffle, wherein the baffle is fixed on the fixed block, one end of the reset spring abuts against the baffle, and the other end of the reset spring abuts against the movable block; the gap between the baffle and the movable block is distributed so that the movable block can tilt or move backward after being acted upon by an external force.

5. The novel grounding mechanism according to claim 4, characterized in that: The movable block is provided with two spring positioning grooves; the two spring positioning grooves are distributed on the side away from the second plane and are symmetrically distributed along the central axis of the movable block; the number of the return springs is two, which are respectively arranged in the two spring positioning grooves.

6. The novel grounding mechanism according to claim 4 or 5, characterized in that: The inner cavity of the fixed block is provided with a stopper, the stopper is located at the upper end of the inner cavity, the movable block is provided in the inner cavity below the stopper, and the stopper is fixed on the stopper by screws.

7. The novel grounding mechanism according to claim 6, wherein: A positioning groove is arranged at the lower end of the stopper, and a positioning block corresponding to the positioning groove is arranged on the movable block, and the positioning block abuts against the positioning groove under the action of a return spring.

8. The novel grounding mechanism according to claim 7, characterized in that: The positioning groove is centrally distributed on the stopper.

9. The novel grounding mechanism according to claim 1, characterized in that: The second plane is tilted to one side relative to the first plane under a force state, so that there is a deflection of plus or minus 2 degrees between the second plane and the first plane.

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