Jig base and test jig

Abstract

The utility model relates to the technical field of test jigs, and particularly discloses a jig base and a test jig, and the jig base comprises a jig bottom plate which is provided with a carrier plate accommodating groove and a plurality of guide columns protruding upwards; the floating carrier plate is arranged in the carrier plate accommodating groove in an up-down sliding manner; the floating springs are located below the floating carrier plate and used for driving the floating carrier plate to slide upwards; each limiting assembly comprises a bolt cushion sleeve and a limiting bolt, the bolt cushion sleeves are used for limiting the floating carrier plate to continue to move upwards, and the limiting bolts penetrate through the bolt cushion sleeves and fix the bolt cushion sleeves to the jig bottom plate; the bottom face of the bolt cushion sleeve is of a plane structure. The jig base and the test jig provided by the utility model can effectively solve the problem that it is difficult to ensure that the floating carrier plate is just in a horizontal state when sliding upwards to a limit position.

Description

Technical Field

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

[0002] See also Figure 1 , the existing fixture base includes:

[0003] A fixture bottom plate 301, wherein the fixture bottom plate 301 is provided with a carrier plate receiving groove 3011;

[0004] A floating carrier 302, wherein the floating carrier 302 is slidably disposed in the carrier accommodating groove 3011, and a top surface of the floating carrier 302 is provided with a component placement groove 3021 for placing the device under test; wherein the floating carrier 302 is provided with a countersunk hole 3024 and a guide groove 3025 extending downward from the bottom of the countersunk hole 3024 through the floating carrier 302;

[0005] A floating spring 303, the floating spring 303 is located below the floating carrier 302 and is used to drive the floating carrier 302 to slide upward;

[0006] The limiting bolt 3042 includes a bolt head 3042 a located in the countersunk hole 3024 , and a screw rod portion 3042 b fixed to the bottom of the bolt head 3042 a and passing through the guide groove 3025 .

[0007] Generally, the connection position between the bolt head 3042a and the screw rod portion 3042b is an arc-shaped structure 3042c.

[0008] Furthermore, the diameter of the guide groove 3025 is slightly larger than the screw portion 3042b, but not much larger. This results in that when the floating carrier 302 moves upward to the limit position, the upper end notch of the guide groove 3025 abuts against the arc structure 3042c of the limit bolt 3042, and the floating carrier 302 and the limit bolt 3042 are in line contact or even point contact. Such contact is insufficient, and it is difficult to ensure that the floating carrier 302 is in a horizontal state when it slides upward to the limit position.

[0009] If the diameter of the guide groove 3025 is much larger than the screw portion 3042b, so that the entire arc structure 3042c is tightly inserted into the guide groove 3025, the floating carrier 302 is prone to large-scale horizontal shaking relative to the limit bolt 3042 during the up and down sliding process, and accurate positioning in the up and down directions cannot be achieved.

[0010] Therefore, it is necessary to improve the existing fixture base to solve the problem that it is difficult to ensure that the floating carrier is in a horizontal state when sliding upward to the limit position.

[0011] The above information disclosed in this Background section is included only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not form the prior art that is currently known to a person of ordinary skill in the art. Utility Model Content

[0012] One purpose of the utility model is to provide a fixture base and a test fixture, which can effectively solve the problem that it is difficult to ensure that the floating carrier is in a horizontal state when sliding upward to the limit position.

[0013] To achieve the above objectives, on the one hand, the utility model provides a fixture base, comprising:

[0014] A fixture bottom plate, wherein the fixture bottom plate is provided with a carrier plate receiving groove, and a plurality of guide columns protruding upward are provided at the bottom of the carrier plate receiving groove;

[0015] A floating carrier, wherein the floating carrier is slidably disposed in the carrier accommodating groove; wherein the floating carrier is provided with a plurality of guide holes slidably connected to each of the guide pillars, and a plurality of limiting notches are provided at the edge of the floating carrier;

[0016] A plurality of floating springs, each of which is located below the floating carrier and is used to drive the floating carrier to slide upward;

[0017] A plurality of limit assemblies are arranged corresponding to each of the limit notches, and the limit assemblies include bolt washers whose edge positions extend into the corresponding limit notches to limit the floating carrier from continuing to move upward, and limit bolts that pass through the bolt washers and fix the bolt washers to the jig bottom plate; wherein the bottom surface of the bolt washers is a planar structure.

[0018] Optionally, a top surface of the floating carrier is provided with a component placement slot for placing the device under test.

[0019] Optionally, a plurality of cushion sleeve accommodating grooves are provided at the edge of the carrier plate accommodating groove, which are arranged in one-to-one correspondence with each of the limiting components.

[0020] Optionally, the bottom of the gasket sleeve accommodating groove is higher than the bottom of the carrier plate accommodating groove, and the bottom of the gasket sleeve accommodating groove is a planar structure.

[0021] Optionally, the limiting bolt includes a bolt head and a screw portion fixed to the bottom of the bolt head, wherein the connection position between the bolt head and the screw portion is an arc structure;

[0022] The bolt washer is provided with a head accommodating groove for accommodating the bolt head, and the bottom of the head accommodating groove is provided with an avoidance hole for the arc structure and the screw rod part to pass through.

[0023] Optionally, a threaded hole threadably connected to the screw rod portion is provided at the bottom of the gasket sleeve accommodating groove.

[0024] Optionally, the number of the guide posts is two, and the two guide posts are located at two oppositely disposed vertex corners of the floating carrier.

[0025] Optionally, the number of the floating springs is four, and one floating spring is correspondingly arranged at each vertex corner of the floating carrier plate.

[0026] Optionally, the number of the limiting components is four, and one limiting component is correspondingly arranged on each side of the floating carrier.

[0027] On the other hand, a test fixture is provided, comprising:

[0028] Briquetting module;

[0029] A rotating hook plate, the rotating hook plate is located on the side of the pressing block module, and the middle position of the rotating hook plate is rotatably connected to the pressing block module;

[0030] The fixture base is located below the pressing block module and is clamped with the lower end of the rotating hook plate.

[0031] The beneficial effects of the utility model are: providing a fixture base and a test fixture, wherein the floating carrier slides along the guide column, and the size difference between the guide column and the guide hole is small, thereby avoiding the problem of large lateral shaking of the floating carrier during the up and down sliding process;

[0032] When the floating spring drives the floating carrier to slide upward to the limit position, the floating carrier abuts against the bottom surface of the bolt washer. The bottom surface of the bolt washer is a plane structure. The bolt washer and the floating carrier are in surface contact. The contact is relatively sufficient, which is conducive to ensuring that the floating carrier is in a horizontal state when it slides upward to abut against the bottom surface of the bolt washer.

[0033] Therefore, the fixture base and the test fixture provided by the utility model can effectively solve the problem that it is difficult to ensure that the floating carrier is in a horizontal state when sliding upward to the limit position. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0035] Figure 1 A schematic diagram of the structure of an existing fixture base provided as background technology;

[0036] Figure 2 A schematic diagram of the structure of a test fixture provided in an embodiment;

[0037] Figure 3 An exploded schematic diagram of a test fixture provided in an embodiment;

[0038] Figure 4 An exploded schematic diagram of a fixture base provided in an embodiment;

[0039] Figure 5 A schematic diagram of the structure of the limit assembly provided in the embodiment.

[0040] In the figure:

[0041] 1. Briquetting module;

[0042] 2. Rotate the hook plate;

[0043] 3. Fixture base;

[0044] 301, fixture bottom plate; 3011, carrier plate receiving groove; 3012, guide column; 3013, cushion sleeve receiving groove;

[0045] 302, floating carrier; 3021, component placement slot; 3022, guide hole; 3023, limit notch; 3024, countersunk hole; 3025, guide groove;

[0046] 303, floating spring;

[0047] 304, limiting assembly; 3041, bolt washer; 3041a, head accommodating groove; 3041b, avoidance hole; 3042, limiting bolt; 3042a, bolt head; 3042b, screw rod; 3042c, arc structure. DETAILED DESCRIPTION

[0048] The reference to "embodiment" in the present invention means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The word "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present invention, as long as there is no technical contradiction or conflict, the various technical features mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

[0049] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which the present invention belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit the present invention.

[0050] In the description of the present invention, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in a logical relationship of "or".

[0051] In the present invention, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0052] Without further restrictions, in the present invention, the words "include", "comprises", "has" or other similar expressions used in sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0053] Similar to the understanding in the Examination Guidelines, in the present invention, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of the present invention, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0054] In the description of the embodiments of the present invention, the space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present invention or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0055] Unless otherwise expressly specified or limited, in the description of the embodiments of the present utility model, the terms "install", "connect", "connect", "fix", "set" and the like used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the technical field of the present utility model, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to the specific circumstances.

[0056] The utility model provides a fixture base and a test fixture, which are suitable for application scenarios of clamping and fixing a device to be tested, and can effectively solve the problem of difficulty in ensuring that a floating carrier is in a horizontal state when sliding upward to an extreme position.

[0057] See also Figure 2 and Figure 3 In this embodiment, the test fixture includes a pressing block module 1, a rotating hook plate 2, and a fixture base 3. The rotating hook plate 2 is located on the side of the pressing block module 1, and the middle position of the rotating hook plate 2 is rotatably connected to the pressing block module 1; the fixture base 3 is located below the pressing block module 1 and is clamped with the lower end of the rotating hook plate 2.

[0058] See also Figure 3~Figure 5 The fixture base 3 includes a fixture bottom plate 301 , a floating carrier plate 302 , a plurality of floating springs 303 , and a plurality of limiting components 304 arranged one-to-one corresponding to each of the limiting notches 3023 .

[0059] The fixture bottom plate 301 is provided with a carrier plate receiving groove 3011, and the bottom of the carrier plate receiving groove 3011 is provided with a plurality of guide posts 3012 protruding upward. The top surface of the floating carrier plate 302 is provided with a component placement groove 3021 for placing the device under test (the bottom of the component placement groove 3021 is provided with a test probe), and the floating carrier plate 302 is slidably arranged in the carrier plate receiving groove 3011; wherein, the floating carrier plate 302 is provided with a plurality of guide holes 3022 slidably connected to each of the guide posts 3012, and the edge position of the floating carrier plate 302 is provided with a plurality of limiting notches 3023. Each of the floating springs 303 is located below the floating carrier plate 302, and is used to drive the floating carrier plate 302 to slide upward.

[0060] The limiting assembly 304 includes a bolt washer 3041 whose edge position extends into the corresponding limiting notch 3023 to limit the floating carrier 302 from continuing to move upward, and a limiting bolt 3042 that passes through the bolt washer 3041 and fixes the bolt washer 3041 to the fixture base plate 301; wherein the bottom surface of the bolt washer 3041 is a planar structure.

[0061] The jig base 3 and the test jig provided in this embodiment, after the device under test is placed in the component placement slot 3021, the jig base 3 is installed into the bottom of the pressure block module 1, and the rotating hook plate 2 is used to lock the jig base 3, so that the test probe at the bottom of the component placement slot 3021 can be electrically connected to the device under test, thereby completing the clamping and fixing of the device under test.

[0062] Before the device under test is loaded into the component placement slot 3021, when the floating spring 303 drives the floating carrier 302 to slide upward to the limit position, the floating carrier 302 abuts against the bottom surface of the bolt washer 3041. The bottom surface of the bolt washer 3041 is a flat structure. The bolt washer 3041 and the floating carrier 302 are in surface contact. The contact is relatively sufficient, which is conducive to ensuring that the floating carrier 302 is in a horizontal state when it slides upward to abut against the bottom surface of the bolt washer 3041.

[0063] When the device to be tested is loaded into the component placement slot 3021, the floating carrier 302 slides along the guide post 3012. The size difference between the guide post 3012 and the guide hole 3022 is small, thereby avoiding the problem of large lateral shaking of the floating carrier 302 during the up and down sliding process.

[0064] Therefore, the fixture base 3 and the test fixture provided by the present invention can effectively solve the problem that it is difficult to ensure that the floating carrier 302 is in a horizontal state when sliding upward to the limit position.

[0065] The edge of the carrier plate receiving groove 3011 is provided with a plurality of cushion sleeve receiving grooves 3013 corresponding to the respective position limiting components 304. The groove bottom of the cushion sleeve receiving groove 3013 is higher than the groove bottom of the carrier plate receiving groove 3011, and the groove bottom of the cushion sleeve receiving groove 3013 is a planar structure.

[0066] The limiting bolt 3042 includes a bolt head 3042a and a screw portion 3042b fixed to the bottom of the bolt head 3042a, wherein the connection position between the bolt head 3042a and the screw portion 3042b is an arc structure 3042c. The bolt washer 3041 is provided with a head receiving groove 3041a for accommodating the bolt head 3042a, and the bottom of the head receiving groove 3041a is provided with an avoidance hole 3041b for the arc structure 3042c and the screw portion 3042b to pass through. The bottom of the washer receiving groove 3013 is provided with a threaded hole threadedly connected to the screw portion 3042b. It should be noted that the size of the avoidance hole 3041b is relatively large, and the arc structure 3042c can enter the avoidance hole 3041b, thereby avoiding the problem of insufficient contact between the bolt washer 3041 and the limiting bolt 3042.

[0067] Optionally, the number of the guide pillars 3012 is two, and the two guide pillars 3012 are located at two opposite top corners of the floating carrier 302; the number of the floating springs 303 is four, and a floating spring 303 is correspondingly arranged at each top corner of the floating carrier 302; the number of the limit assemblies 304 is four, and a limit assemblies 304 is correspondingly arranged on each side of the floating carrier 302.

[0068] In summary, the fixture base 3 and the test fixture provided by the present embodiment have the following advantages: the floating carrier 302 slides along the guide column 3012, thereby avoiding the problem of large lateral shaking of the floating carrier 302 during the up and down sliding process; when the floating spring 303 drives the floating carrier 302 to slide upward to the limit position, the bolt washer 3041 and the floating carrier 302 are in surface contact, and the contact is relatively sufficient, which is conducive to ensuring that the floating carrier 302 is in a horizontal state when it slides upward to abut against the bottom surface of the bolt washer 3041. Therefore, the fixture base 3 and the test fixture provided by the utility model can effectively solve the problem that it is difficult to ensure that the floating carrier 302 is in a horizontal state when it slides upward to the limit position.

[0069] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A fixture base, characterized in that: include: A fixture bottom plate (301), wherein the fixture bottom plate (301) is provided with a carrier plate accommodating groove (3011), and a plurality of guide columns (3012) protruding upward are provided at the bottom of the carrier plate accommodating groove (3011); A floating carrier (302), the floating carrier (302) being slidably disposed up and down in the carrier accommodating groove (3011); wherein the floating carrier (302) is provided with a plurality of guide holes (3022) slidably connected up and down with each of the guide pillars (3012), and a plurality of limiting notches (3023) are provided at the edge of the floating carrier (302); a plurality of floating springs (303), each of the floating springs (303) being located below the floating carrier (302) and used to drive the floating carrier (302) to slide upwards; A plurality of limit assemblies (304) are arranged corresponding to each of the limit notches (3023), the limit assemblies (304) comprising a bolt washer (3041) extending at an edge position into the corresponding limit notch (3023) to limit the floating carrier (302) from continuing to move upward, and a limit bolt (3042) passing through the bolt washer (3041) and fixing the bolt washer (3041) to the fixture bottom plate (301); wherein the bottom surface of the bolt washer (3041) is a planar structure.

2. The fixture base according to claim 1, characterized in that: The top surface of the floating carrier (302) is provided with a component placement slot (3021) for placing the device to be tested.

3. The fixture base according to claim 1, characterized in that: A plurality of cushion sleeve accommodating grooves (3013) are arranged at the edge of the carrier plate accommodating groove (3011) and are arranged in one-to-one correspondence with each of the limiting components (304).

4. The fixture base according to claim 3, characterized in that: The groove bottom of the gasket sleeve accommodating groove (3013) is higher than the groove bottom of the carrier plate accommodating groove (3011), and the groove bottom of the gasket sleeve accommodating groove (3013) is a planar structure.

5. The fixture base according to claim 4, characterized in that: The limiting bolt (3042) comprises a bolt head (3042a) and a screw rod portion (3042b) fixedly arranged at the bottom of the bolt head (3042a), wherein the connection position between the bolt head (3042a) and the screw rod portion (3042b) is an arc-shaped structure (3042c); The bolt washer (3041) is provided with a head accommodating groove (3041a) for accommodating the bolt head (3042a), and the groove bottom of the head accommodating groove (3041a) is provided with an avoidance hole (3041b) for the arc structure (3042c) and the screw rod portion (3042b) to pass through.

6. The fixture base according to claim 5, characterized in that: The bottom of the gasket sleeve accommodating groove (3013) is provided with a threaded hole threadably connected to the screw rod portion (3042b).

7. The fixture base according to claim 1, characterized in that: The number of the guide columns (3012) is two, and the two guide columns (3012) are located at two oppositely disposed vertex corners of the floating carrier (302).

8. The fixture base according to claim 1, characterized in that: The number of the floating springs (303) is four, and one floating spring (303) is correspondingly arranged at each vertex of the floating carrier plate (302).

9. The fixture base according to claim 1, characterized in that: The number of the limiting components (304) is four, and one limiting component (304) is correspondingly arranged on each side surface of the floating carrier (302).

10. A test fixture, characterized in that: include: Briquetting module (1); A rotating hook plate (2), the rotating hook plate (2) being located on a side of the pressing block module (1), and the middle portion of the rotating hook plate (2) being rotatably connected to the pressing block module (1); The jig base (3) according to any one of claims 1 to 9, wherein the jig base (3) is located below the pressing block module (1) and is clamped with the lower end of the rotating hook plate (2).

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