Drawing force test fixture and test machine

Abstract

The utility model provides a drawing force test fixture and a test machine. The drawing force test fixture comprises a clamping piece and a fixture seat which are oppositely arranged, a clamping part is arranged on the clamping piece, and the clamping part is used for clamping and / or abutting against one end, provided with a nut, of the plastic screw column assembly; the clamp seat comprises a clamp seat main body and a limiting piece, a connecting hole is formed in the clamp seat main body, and limiting holes with different sizes are formed in the limiting piece; the limiting piece is movably arranged in the clamp base body so that the end, connected with the nut, of the plastic screw column assembly can penetrate through the limiting hole and / or the connecting hole to be fixed to the clamp base. The utility model provides a drawing force test fixture and a test machine, which can adapt to diversified plastic screw stud assemblies, have high universality and wide application scenarios, and are beneficial to improving the accuracy of test results.

Description

Technical Field

[0001] This application relates to the field of pull-out force testing technology, and in particular to a pull-out force testing fixture and testing machine. Background Technology

[0002] Pull-out force testing is a mechanical testing method used to evaluate the tensile strength of materials or connectors in the direction perpendicular to the surface. In the process of pull-out force testing, it is often necessary to fix the material to be tested. Pull-out force testing fixture is a device specifically used to fix the material and transfer the tensile force from the testing machine to the material or connector.

[0003] In the existing technology, some test fixtures can be used to hold sheet-like or block-like materials, but for cylindrical materials, such as screw pillar assemblies, uneven force and material deformation are likely to occur, resulting in deviations in test data. In addition, some test fixtures have poor versatility and cannot meet the usage requirements of screw pillar assemblies of different specifications, thus limiting the application scenarios of the test fixtures.

[0004] Therefore, a solution is needed to address at least one of the aforementioned problems. Utility Model Content

[0005] In view of at least one of the defects in the prior art, this application proposes a pull-out force testing fixture.

[0006] The technical solution adopted by this application to solve at least one of the above-mentioned technical problems is as follows:

[0007] A pull-out force testing fixture includes: a locking member and a fixture base disposed opposite to each other; the locking member is provided with a snap-fit ​​portion, which is used to lock and / or abut against one end of a plastic screw post assembly provided with a nut;

[0008] The fixture base includes a fixture base body and a limiting member. The fixture base body has a connecting hole, and the limiting member has limiting holes of different sizes.

[0009] The limiting member is movably placed in the fixture body so that the end of the plastic screw post assembly with the nut can pass through the limiting hole and / or the connecting hole and be fixed to the fixture body.

[0010] In one specific embodiment, the fixture body is provided with a sliding groove, and the connecting hole is formed on the bottom wall of the sliding groove;

[0011] The limiting member is placed in the sliding groove to achieve a movable connection with the fixture base body.

[0012] Wherein, the inner diameter of the connecting hole is not less than the inner diameter of any of the limiting holes.

[0013] In one specific embodiment, the two sidewalls of the sliding groove protrude toward the central region of the sliding groove to form abutting portions for abutting the limiting member.

[0014] In one specific embodiment, the distance from the bottom of the sliding groove to the abutment portion is a first length, and the thickness of the limiting member is not greater than the first length.

[0015] In one specific embodiment, the cross-sectional shape of the snap-fit ​​portion includes a V-shape.

[0016] In one specific embodiment, a buffer pad layer is provided on the side of the latching portion opposite to the clamp seat and / or on the side of the limiting member opposite to the engaging member.

[0017] In one specific embodiment, the inner wall of each of the limiting holes is provided with an internal thread that matches the external thread of the plastic screw post assembly.

[0018] In one specific embodiment, a mounting base and a bracket are also provided;

[0019] The clamp seat is connected to the mounting base via the bracket.

[0020] In one specific embodiment, the end of the engaging member away from the engaging portion is provided with a first connecting portion for connecting to an external structure, and the mounting base is provided with a second connecting portion for connecting to an external structure.

[0021] A pull-out force testing machine, comprising a pull-out force testing fixture as described in any of the claims in the first part.

[0022] Beneficial effects:

[0023] This application provides a pull-out force testing fixture and testing machine, which can adapt to a variety of plastic screw stud assemblies, has strong versatility and a wide range of application scenarios, and helps to improve the accuracy of test results. Specifically, the snap-fit ​​part of the snap-fit ​​component and the limiting hole of different sizes of the limiting component can adapt to the use needs of plastic screw stud assemblies of different sizes, and the force is evenly distributed, making it less likely to squeeze the plastic screw stud assembly, thereby improving the accuracy of the pull-out force test results of the plastic screw stud assembly. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional structural diagram of the pull-out force testing fixture in this embodiment;

[0026] Figure 2 This is a three-dimensional structural diagram of the snap-fit ​​component in this embodiment;

[0027] Figure 3 Connections to the fixture base structure in this embodiment Figure 1 ;

[0028] Figure 4 Connections to the fixture base structure in this embodiment Figure 2 ;

[0029] Figure 5 This is a three-dimensional structural diagram of the limiting component in this embodiment;

[0030] Figure 6 This is an example diagram of the plastic screw post assembly structure in this embodiment;

[0031] Figure 7 This is a three-dimensional structural diagram of the pull-out force testing machine in this embodiment.

[0032] Figure label:

[0033] 1-Clamping part; 11-Clamping part; 110-Anti-slip texture; 111-Buffer pad; 12-First connecting part; 2-Clamp seat; 21-Clamp seat body; 210-Abutting part; 211-Sliding groove; 22-Limiting part; 220-Limiting hole; 221-Internal thread; 222-External thread; 23-Connecting hole; 3-Bracket; 4-Mounting base; 41-Second connecting part; 51-Nut; 52-Screw; 53-Nut; 61-Base; 62-Drive device; 63-Clamp fixing device. Detailed Implementation

[0034] Various embodiments of this disclosure will be described more fully below. This disclosure may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of this disclosure to the specific embodiments disclosed herein, but rather this disclosure should be understood to cover all adjustments, equivalents, and / or alternatives falling within the spirit and scope of the various embodiments of this disclosure.

[0035] In the following, the terms “comprising” or “may include”, which may be used in various embodiments of this disclosure, indicate the presence of the disclosed functions, operations, or elements, and do not limit the addition of one or more functions, operations, or elements. Furthermore, as used in various embodiments of this disclosure, the terms “comprising,” “having,” and their cognates are intended only to indicate a particular feature, number, step, operation, element, component, or combination of the foregoing, and should not be construed as primarily excluding the presence of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing, or the possibility of adding one or more combinations of the foregoing.

[0036] In various embodiments of this disclosure, the expression "or" or "at least one of A and / or B" includes any combination or all combinations of the words listed simultaneously. For example, the expression "A or B" or "at least one of A and / or B" may include A, may include B, or may include both A and B.

[0037] The terms used in the various embodiments of this disclosure (such as "first," "second," etc.) may modify various components in the various embodiments, but do not limit the corresponding components. For example, the above terms do not limit the order and / or importance of the components. The above terms are only used for the purpose of distinguishing one component from others. For example, a first user device and a second user device refer to different user devices, although both are user devices. For example, a first component may be referred to as a second component without departing from the scope of the various embodiments of this disclosure, and similarly, a second component may also be referred to as a first component.

[0038] It should be noted that if a description is made of "connecting" one component to another, then the first component can be directly connected to the second component, and a third component can be "connected" between the first and second components. Conversely, when a component is "directly connected" to another component, it can be understood that there is no third component between the first and second components.

[0039] The term "user" as used in various embodiments of this disclosure may refer to a person using an electronic device or a device using an electronic device (e.g., an artificial intelligence electronic device).

[0040] The terminology used in the various embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the various embodiments of this disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of this disclosure pertain. Terms (such as those defined in a generally used dictionary) are to be interpreted as having the same meaning as in the context of the relevant technical field and are not to be interpreted as having an idealized or overly formal meaning, unless clearly defined in the various embodiments of this disclosure.

[0041] Example

[0042] This application provides a pull-out force testing fixture, which can be mounted on a pull-out force testing machine and performs pull-out force testing by clamping a tensile plastic screw post assembly. Figures 1 to 4 As shown, it includes: a locking member 1 and a clamping base 2 arranged opposite to each other;

[0043] The engaging part 1 is provided with a engaging part 11, which is used to engage and / or abut against one end of the plastic screw post assembly that is provided with a nut 51;

[0044] Specifically, in some embodiments of this application, the snap-fit ​​portion 11 is provided with an opening, and the opening is used to clamp the plastic screw post assembly from the radial direction. The size of the opening gradually increases or decreases along the radial direction of the plastic screw post assembly to accommodate plastic screw post assemblies with different outer diameters.

[0045] The fixture base 2 includes a fixture base body 21 and a limiting member 22. The fixture base body 21 has a connecting hole 23, and the limiting member 22 has limiting holes 220 of different sizes.

[0046] Preferably, the inner diameter of the connecting hole 23 is not less than that of any limiting hole 220;

[0047] The 220 limiting holes of different sizes are used to accommodate the fixing needs of plastic screw stud assemblies with different outer diameters;

[0048] The limiting member 22 is movably placed in the fixture body 21 so that one end of the plastic screw post assembly connected to the nut 53 can pass through the limiting hole 220 and / or the connecting hole 23 and be fixed to the fixture 2.

[0049] Understandably, through the movable setting of the limiting member 22, one end of the plastic screw post assembly connected with the nut 53 can pass through the limiting hole 220 and / or the connecting hole 23 and be fixed to the clamp base 2; and the limiting member 22 is provided with multiple limiting holes 220 of different diameters. Through the cooperation of the limiting holes 220 and the connecting hole 23, it can adapt to plastic screw post assemblies of different outer diameters, which has strong versatility and good clamping stability.

[0050] In addition, the limiting hole 220 also helps to limit the offset or movement of the plastic screw stud assembly in the radial direction. As a component of the clamp seat 2, the limiting member 22 increases the contact surface between the clamp seat 2 and the plastic screw stud assembly, thereby enhancing the stability of the relative position between the plastic screw stud assembly and the clamp seat 2; and can also adjust the connection method of the clamp seat 2 according to the outer diameter of different plastic screw stud assemblies.

[0051] More specifically, in some embodiments of this application, such as Figure 6 As shown, the plastic screw post assembly includes a plastic screw post and a nut 53. The snap-fit ​​part 11 is used to snap the screw 52 part of the plastic screw post and to abut against the nut 51 of the plastic screw post. The other end of the plastic screw post passes through the limiting hole 220 and / or the connecting hole 23 and is threaded to the nut 53 and fixed to the clamp seat 2, thereby achieving a good fixing effect on both ends of the plastic screw post assembly.

[0052] Of course, there are no restrictions on the specific form of the plastic screw post assembly, nor on the specific fixing method.

[0053] Furthermore, a sliding groove 211 is provided on the fixture body 21, and a connecting hole 23 is provided on the bottom wall of the sliding groove 211;

[0054] The limiting member 22 is placed in the sliding groove 211 to achieve a movable connection with the fixture seat body 21.

[0055] Specifically, in some embodiments of this application, the limiting member 22 is movably placed in the sliding groove 211 to switch the limiting hole 220 of different diameters to be opposite to the connecting hole 23, so that the other end of the plastic screw post assembly can pass through the limiting hole 220 and / or the connecting hole 23 and be fixed to the clamp seat 2.

[0056] More specifically, in some embodiments of this application, when dealing with plastic screw post assemblies with small outer diameters, the other end of the plastic screw post assembly only passes through the limiting hole 220 and is fixed to the clamp seat 2 by connecting the bottom of the limiting member 22.

[0057] When dealing with plastic screw stud assemblies with a large outer diameter, the other end of the plastic screw stud assembly can pass through the limiting hole 220 and the connecting hole 23 in sequence, or pass through the connecting hole 23 without using the limiting part 22, and be directly fixed to the bottom of the clamp base 2. When passing through the limiting hole 220 and the connecting hole 23 at the same time, the number of fixing points between the clamp base 2 and the plastic screw stud assembly can be further increased, thereby enhancing the stability of clamping and fixing.

[0058] Furthermore, such as Figure 3 As shown, the two side walls of the sliding groove 211 protrude toward the central area of ​​the sliding groove 211 to form abutment portions 210 for abutting against the limiting member 22.

[0059] Specifically, in some embodiments of this application, the two side walls of the sliding groove 211 in the length direction protrude toward the central region of the sliding groove 211 to form an abutment portion 210 for abutting against the limiting member 22.

[0060] The distance between the protruding parts on both side walls is no greater than the width of the limiting member 22.

[0061] Furthermore, the distance between the protruding portions on both sides of the wall is not less than the diameter of the screw 52 of the plastic screw post assembly.

[0062] Understandably, on the one hand, the abutment portion 210 enhances the structural strength of the sliding groove 211 portion in the clamp seat 2, making it easier to better fix the plastic screw post assembly;

[0063] On the other hand, the abutting portion 210 distributed along the length of the sliding groove 211 can also limit or guide the sliding movement of the limiting member 22 to a certain extent.

[0064] On the other hand, when conducting the pull-out force test of the plastic screw post assembly, the abutment part 210 can abut against the limiting member 22, which increases the contact area between the sliding groove 211 and the limiting member 22, and at the same time increases the force point, which can play a supporting role and prevent the limiting member 22 from disengaging from the sliding groove 211 to a certain extent, further enhancing the connection stability between the clamp seat 2 and the plastic screw post assembly.

[0065] Furthermore, the distance from the bottom of the sliding groove 211 to the abutment portion 210 is the first length, and the thickness of the limiting member 22 is not greater than the first length.

[0066] Understandably, the design of the positional relationship between the abutment part 210 and the limiting member 22 reduces the friction between the abutment part 210 and the limiting member 22, which can ensure the smooth movement of the limiting member 22 to a large extent and avoid jamming problems caused by excessive interference of the abutment part 210.

[0067] Meanwhile, during the pull-out force test of the plastic screw post assembly, the abutment part 210 can also abut against the limiting part 22, which enhances the stability.

[0068] Specifically, in some embodiments of this application, the cross-sectional shape of the snap-fit ​​portion 11 includes a V-shape.

[0069] Understandably, the V-shaped snap-fit ​​part 11 can adapt to different sizes of plastic screw post assemblies, has a tolerance range, and thus has strong versatility. On the other hand, the V-shaped shape of the snap-fit ​​part 11 generates greater clamping force through inclined contact, which also enhances the stability of the snap-fit ​​part 11 in the engagement state with the screw 52 part of the plastic screw post and the abutment state with the nut 51 part of the plastic screw post.

[0070] More specifically, in some embodiments of this application, elastic anti-detachment portions (not shown in the figure) are also provided on both sides of the opening of the snap-fit ​​portion 11. The anti-detachment portions are used to prevent the plastic screw post assembly from detaching from the snap-fit ​​portion 11 during the test, thereby enhancing the safety of the snap-fit ​​component 1.

[0071] Furthermore, such as Figure 2 As shown, the snap-fit ​​part 11 is provided with anti-slip texture 110.

[0072] Optionally, the anti-slip texture 110 can be in the form of a zigzag pattern, a wave pattern, or a raised or recessed pattern;

[0073] Of course, there are no restrictions on the specific shape of the anti-slip texture 110.

[0074] Understandably, the anti-slip texture 110 increases the roughness of the surface of the snap-fit ​​portion 11, thereby increasing the coefficient of friction between the surface of the snap-fit ​​portion 11 and the contact surface of the plastic screw post assembly, and thus increasing the friction between the snap-fit ​​portion 11 and the plastic screw post assembly, which helps to enhance the connection stability between the snap-fit ​​portion 11 and the plastic screw post assembly.

[0075] Furthermore, such as Figure 2 and Figure 5 As shown, a buffer pad 111 is provided on the side of the latching part 11 facing away from the clamp seat 2 and / or on the side of the limiting member 22 facing away from the engaging member 1.

[0076] Understandably, in some embodiments of this application, the buffer layer 111 can effectively absorb the impact and vibration received, protect the snap-fit ​​portion 11 and the limiting member 22 from direct impact, thereby reducing damage or wear caused by external forces.

[0077] In addition, the buffer pad 111 helps to reduce the gap at the connection between the snap-fit ​​part 11 and / or the limiting member 22 and the plastic screw post assembly, making the connection tighter and thus improving the connection stability of the plastic screw post assembly.

[0078] For example, the material of the cushioning layer 111 can be such as rubber, silicone or chlorinated polyethylene;

[0079] Of course, no restrictions are placed on the specific material composition of the cushioning layer 111.

[0080] Furthermore, such as Figure 5 As shown, the inner wall of each limiting hole 220 is provided with an internal thread 221 that matches the external thread 222 of the plastic screw post assembly.

[0081] Understandably, the internal thread 221 on the limiting hole 220 and the external thread 222 of the plastic screw post assembly achieve a self-locking effect, which helps the plastic screw post assembly to be firmly fixed on the fixture seat 2. This avoids loosening or instability during the test to a certain extent, and also effectively limits the axial displacement and radial sway of the plastic screw post assembly under test, reducing the test error caused by the loosening of the plastic screw post assembly, thereby improving the test accuracy.

[0082] In addition, the threaded engagement allows pressure to be transmitted evenly along the helix, which also helps to avoid local stress concentration.

[0083] Furthermore, such as Figure 1 , Figure 3 and Figure 4 As shown, a mounting base 4 and a bracket 3 are also provided; the clamp base 2 is connected to the mounting base 4 via the bracket 3.

[0084] Understandably, the bracket 3 is positioned between the mounting base 4 and the clamp base 2, and the clamp base 2 is connected to the mounting base 4 through the bracket 3, thus creating a gap between the mounting base 4 and the clamp base 2. This facilitates the use of plastic screw post assemblies of different lengths, and the gap also facilitates the operation of fixing the plastic screw post assembly to the clamp base 2.

[0085] Meanwhile, the bracket 3 and the mounting base 4 can also disperse the stress on the clamp base 2, reduce local stress concentration, and reduce the risk of damage to the clamp base 2.

[0086] Furthermore, combined Figure 1 , Figure 2 and Figure 4 As shown, the end of the snap-fit ​​1 away from the snap-fit ​​part 11 is provided with a first connecting part 12 for connecting to an external structure, and the mounting base 4 is provided with a second connecting part 41 for connecting to an external structure.

[0087] For example, the external structure may be a desktop, a drive unit, or a pull-out force testing machine;

[0088] Specifically, in some embodiments of this application, the pull-out force testing fixture is connected to the pull-out force testing machine through the first connecting part 12 and the second connecting part 41.

[0089] Of course, no restrictions are placed on the specific structure of the external structure.

[0090] More specifically, in some embodiments of this application, the first connecting part 12 is a through hole and the second connecting part 41 is a threaded hole. The pull-out force testing fixture and the pull-out force testing machine are fixed by the through hole and the connecting post, and the threaded hole and the bolt.

[0091] This application also provides a pull-out force testing machine, such as... Figure 7 As shown, a pull-out force testing fixture including any of the items in the first part above;

[0092] The pull-out force testing machine is also equipped with a base 61, a drive device 62, and a movable clamp fixing device 63;

[0093] The driving device 62 is connected to the clamp fixing device 63 and is used to drive the clamp fixing device 63 to move toward or away from the base 61. The base 61 is used to fix the clamp seat 2 through the second connecting part 41 of the mounting seat 4. The clamp fixing device 63 is connected to the locking member 1 through the first connecting part 12, and drives the locking member 1 to move toward or away from the base 61.

[0094] The engaging part 11 of the engaging component 1 engages with the screw 52 of the plastic screw post assembly, which is provided with a nut 51 at one end. The clamp base 2 fixes the end of the plastic screw post assembly connected to the nut 53. The clamp fixing device 63 is driven by the driving device 62, which moves the clamp fixing device 63 away from the base 61. The nut 51 of the plastic screw post assembly abuts against the engaging part 11. The engaging component 1 is moved by the driving device 62, thereby applying a pull-out force to the plastic screw post assembly, thus realizing the pull-out force test of the plastic screw post assembly.

[0095] The embodiments of this application have at least the following beneficial effects:

[0096] This application provides a pull-out force testing fixture and testing machine that can adapt to a variety of plastic screw stud assemblies, has strong versatility and a wide range of application scenarios, and helps to improve the accuracy of test results. Specifically, the snap-fit ​​part 11 of the snap-fit ​​part 1 and the limiting hole 220 of different sizes of the limiting part 22 are provided, thereby adapting to the usage requirements of plastic screw stud assemblies of different sizes, and the force is evenly distributed, making it less likely to squeeze the plastic screw stud assembly, thus improving the accuracy of the pull-out force test results of the plastic screw stud assembly.

[0097] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of a preferred embodiment, and the modules or processes shown in the drawings are not necessarily essential for implementing this application.

[0098] Those skilled in the art will understand that the modules in the apparatus of the implementation scenario can be distributed within the apparatus of the implementation scenario as described, or they can be located in one or more apparatuses different from this implementation scenario, with corresponding changes. The modules of the above-described implementation scenario can be combined into one module, or they can be further divided into multiple sub-modules.

[0099] The serial numbers in this application are for descriptive purposes only and do not represent the superiority or inferiority of the implementation scenario.

[0100] The above disclosures are only a few specific implementation scenarios of this application. However, this application is not limited to these. Any variations that can be conceived by those skilled in the art should fall within the protection scope of this application.

Claims

1. A pull-out force testing fixture, characterized in that, include: The locking components and clamping bases are positioned opposite each other; The engaging component is provided with a snap-fit ​​part, which is used to engage and / or abut against one end of the plastic screw post assembly that is provided with a nut; The fixture base includes a fixture base body and a limiting member. The fixture base body has a connecting hole, and the limiting member has limiting holes of different sizes. The limiting member is movably placed in the fixture body so that one end of the plastic screw post assembly connected to the nut can pass through the limiting hole and / or the connecting hole and be fixed to the fixture body.

2. The pull-out force testing fixture according to claim 1, characterized in that, The fixture base body is provided with a sliding groove, and the connecting hole is provided on the bottom wall of the sliding groove; The limiting member is placed in the sliding groove to achieve a movable connection with the fixture base body. Wherein, the inner diameter of the connecting hole is not less than the inner diameter of any of the limiting holes.

3. A pull-out force testing fixture according to claim 2, characterized in that, The two side walls of the sliding groove protrude toward the central region of the sliding groove to form abutting parts for abutting the limiting member.

4. A pull-out force testing fixture according to claim 3, characterized in that, The distance from the bottom of the sliding groove to the abutment is a first length, and the thickness of the limiting member is not greater than the first length.

5. A pull-out force testing fixture according to claim 1, characterized in that, The cross-sectional shape of the snap-fit ​​portion includes a V-shape.

6. A pull-out force testing fixture according to claim 1, characterized in that, A buffer pad is provided on the side of the latching part opposite to the clamp seat and / or on the side of the limiting member opposite to the engaging member.

7. A pull-out force testing fixture according to claim 1, characterized in that, The inner wall of each of the limiting holes is provided with an internal thread that matches the external thread of the plastic screw post assembly.

8. A pull-out force testing fixture according to claim 1, characterized in that, It is also equipped with a mounting base and bracket; The clamp seat is connected to the mounting base via the bracket.

9. A pull-out force testing fixture according to claim 8, characterized in that, The engaging member has a first connecting portion for connecting to an external structure at one end away from the engaging portion, and the mounting base has a second connecting portion for connecting to an external structure.

10. A pull-out force testing machine, characterized in that, The present invention includes a pull-out force testing fixture as described in any one of claims 1 to 9.

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