Friction abnormal sound test carrier tool

Abstract

The utility model provides a friction abnormal sound test carrier tool, which comprises a base, a first mounting piece and a second mounting piece, and is characterized in that the base comprises a first hinge groove with an inner wall of a spherical structure and two second hinge grooves with inner walls of spherical structures; a first bonding surface and a first hinging surface are respectively formed on two sides of the first mounting piece, and the first hinging surface is connected with a first spherical hinge which can be movably embedded into the first hinging groove; a second bonding face and a second hinge face are formed on the two sides of the second installation piece respectively, and the second hinge face is connected with two second spherical hinges capable of being movably embedded into the second hinge grooves. The base can be matched with the first mounting piece and the second mounting piece in a hinged mode, when samples of different types are tested, only the first mounting piece or the second mounting piece needs to be replaced, the base does not need to be disassembled and replaced, the screw disassembling and assembling step is omitted, and the testing efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to friction abnormal sound test equipment technical field, concretely relates to a kind of friction abnormal sound test carrier tooling. BACKGROUND

[0002] Automobile material friction abnormal sound is one of the important sources of automobile abnormal sound, such as friction between interior decoration, friction between parts of central control instrument, etc. Material friction abnormal sound discrimination is needed before automobile product development verification, to prevent obvious abnormal sound after two materials are assembled into a vehicle. Material friction abnormal sound test includes material A and material B, wherein material A is fixed on a slide, material B is fixed on a spring holder and vertically pressed against material A. When the slide moves, material A and material B slide and rub, and the data collected by force sensor, acceleration sensor and other devices during the rubbing process can be used for material evaluation.

[0003] In order to realize the mutual friction of two materials, the test usually pastes material A and material B on the slide and the fixed frame respectively. Based on different test purposes, the contact mode of material A and material B is different. For example, when performing leather and leather friction test, line-surface contact friction between the two is required. When performing plastic and plastic friction test, face-to-face contact friction between the two is required. In general, material A is pasted on the slide in a flat state during the test, while material B is pasted according to the different friction modes by selecting the corresponding tooling. For example, the patent document with application number CN202011551859.3 discloses a material friction abnormal sound test bench plug-in fast release structure. Different structures of the pressure head are used in the embodiments 1 and 2 of the patent document. The pressure head of one embodiment has a flat surface bonding surface, while the pressure head of the other embodiment has a curved surface bonding surface. The above technical solution meets the two pasting requirements of material B, but when switching the test mode, the pressure head needs to be removed from the spring clamp and then another pressure head needs to be installed. The mode switching process takes a long time and the test efficiency is low.

[0004] There is a common drawback. In order to ensure test accuracy, it is necessary to ensure that the line-surface or face-to-face contact between material A and material B during the test is uniform, and a gap cannot be formed by one side being raised. The installation structure in the prior art cannot guarantee the above effect. UTILITY MODEL CONTENTS

[0005] In order to solve the above problems, the utility model provides a friction abnormal sound test carrier tooling. The carrier tooling can adaptively adjust the contact mode between material A and material B, ensure the uniformity of line-surface or face-to-face contact, and improve the test accuracy.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A frictional abnormal sound test carrier tool, comprising a base, a first mounting member and a second mounting member, the base has a mounting base surface, the mounting base surface is formed with a first hinge part and a second hinge part, the first hinge part comprises a first hinge groove with a spherical inner wall, the second hinge part comprises two second hinge grooves with spherical inner walls; the first mounting member is formed with a first bonding surface and a first hinge surface on two sides respectively, the first bonding surface is a planar structure, the first hinge surface is connected with a first spherical hinge with a spherical convex outer wall which is movably embedded in the first hinge groove; the second mounting member is formed with a second bonding surface and a second hinge surface on two sides respectively, the second bonding surface is formed with a curved surface structure which protrudes away from the second hinge surface, the second hinge surface is connected with two second spherical hinges with spherical convex outer walls which are movably embedded in the second hinge grooves, the center distance of the two hinge grooves is equal to the center distance of the two second spherical hinges.

[0008] Further, the first hinge groove is located on the line connecting the two second hinge grooves.

[0009] Further, the first hinge groove is arranged in the middle of the mounting base surface, and the two second hinge grooves are arranged symmetrically with respect to the center of the first hinge groove.

[0010] Further, the center line of the two second spherical hinges is perpendicular to the generatrix of the second hinge surface.

[0011] Further, the spherical radius corresponding to the outer wall of the first spherical hinge is not more than the spherical radius corresponding to the inner wall of the first hinge groove, and the spherical radius corresponding to the outer wall of the second spherical hinge is not more than the spherical radius corresponding to the inner wall of the second hinge groove.

[0012] Further, the depth of the first hinge groove is 0.3-0.5 times the corresponding spherical radius, the protrusion height of the first spherical hinge is 0.5-0.7 times the corresponding spherical radius, and the protrusion height of the first spherical hinge is greater than the depth of the first hinge groove.

[0013] Further, the depth of the second hinge groove is 0.3-0.5 times the corresponding spherical radius, the protrusion height of the second spherical hinge is 0.5-0.7 times the corresponding spherical radius, and the protrusion height of the second spherical hinge is greater than the depth of the second hinge groove.

[0014] Further, the spherical radius corresponding to the first spherical hinge is greater than the spherical radius corresponding to the second hinge groove.

[0015] Further, the base further comprises a connecting part provided with a connecting hole.

[0016] Further, the line direction of the two second hinge grooves is parallel to the axis direction of the connecting hole.

[0017] Therefore, the utility model can achieve the following beneficial effects:

[0018] 1. The utility model discloses a hinged groove and ball hinge are provided with the mounting piece for pasting sample and the base movable hinge for connecting spring clamp, and the mounting piece can deflect based on the hinge point, when the mounting piece is pressed on the slide by the spring frame, the mounting piece can adjust the angle according to the stress condition of the installation base surface, so that the sample B pasted on the installation base surface is more uniform and close to the sample A below, and the test precision is improved.

[0019] 2. The utility model discloses that first hinged part and second hinged part are simultaneously provided on the base, and first hinged part and second hinged part can be respectively hinged with first mounting piece and second mounting piece, when testing different types of samples, only need to replace first mounting piece / second mounting piece, do not need to disassemble and replace the base, the screw dismounting step is saved, and the test efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the stereoscopic structure schematic diagram of the friction abnormal sound test carrier tool in the embodiment;

[0021] Figure 2 It is the side view or sectional view structure schematic diagram of the friction abnormal sound test carrier tool;

[0022] Figure 3 It is the structure schematic diagram of the friction abnormal sound test carrier tool in the first working state;

[0023] Figure 4 It is the structure schematic diagram of the friction abnormal sound test carrier tool in the second working state;

[0024] Figure 5 It is the installation structure schematic diagram of the friction abnormal sound test carrier tool and spring frame;

[0025] In the drawing, 1-base, 11-installation base surface, 12-first hinged groove, 13-second hinged groove, 14-connection part, 141-connection hole, 2-first mounting piece, 21-first bonding surface, 22-first hinged surface, 23-first ball hinge, 3-second mounting piece, 31-second bonding surface, 32-second hinged surface, 33-third ball hinge, 4a, 4b-movable gap, 5-spring frame, 6-fixed screw. DETAILED DESCRIPTION

[0026] The technical solutions of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model. Embodiments

[0027] With reference to Figure 1 And Figure 2 The embodiment provides a frictional abnormal sound test carrier tool, which comprises a base 1, a first mounting piece 2 and a second mounting piece 3, and specifically:

[0028] The base 1 comprises a main body part which is roughly cuboid in structure, a mounting base surface 11 is formed on the first side of the main body part, the mounting base surface is formed with a first hinge part and a second hinge part, the first hinge part comprises a first hinge groove 12, the inner wall of the first hinge groove is spherical in structure, and the depth of the first hinge groove is not more than the radius of the corresponding spherical structure, the second hinge part comprises two second hinge grooves 13, the inner wall of the second hinge groove is spherical in structure, and the depth of the second hinge groove is not more than the radius of the corresponding spherical structure, the first hinge groove is located in the middle of the mounting base surface, and the first hinge groove is located at the center position of the connecting line of the two second hinge grooves, and the connecting line of the two second hinge grooves is parallel to one side of the mounting base surface; a connecting base surface parallel to the mounting base surface is formed on the second side of the main body part, a connecting part 14 is vertically connected to the connecting base surface, and the connecting part is provided with a connecting hole 141 whose axis direction is parallel to the connecting base surface;

[0029] The two sides of the first mounting piece 2 are respectively formed with a first bonding surface 21 and a first hinge surface 22, the first bonding surface and the first hinge surface are mutually parallel planar structures, the middle part of the first hinge surface is connected with a convex first spherical hinge 23, the outer wall of the first spherical hinge is spherical in structure, the corresponding spherical radius of the outer wall of the first spherical hinge is not more than the corresponding spherical radius of the inner wall of the first hinge groove, and the convex height of the first spherical hinge compared with the first hinge surface is greater than the depth of the first hinge groove, so that the first spherical hinge can be movably embedded into the first hinge groove and at least part of the first spherical hinge is located outside the first hinge groove;

[0030] The two sides of the second mounting piece 3 are respectively formed with a second bonding surface 31 and a second hinge surface 32, in the embodiment, the second bonding surface is a curved surface structure which is convex in the direction away from the second hinge surface and can coincide with the side wall of a certain cylinder, in another embodiment, the second bonding surface can also be a certain part of the shape which can coincide with the side wall of a certain cylinder, for example, the second bonding surface can be a certain part of the shape which can coincide with the side wall of a certain cylinder in the direction away from the second hinge surface Figure 1 、 2The second adhesive surface is discontinuously distributed based on the shown structure, or the second adhesive surface is composed of a central curved surface structure and two side flat surface structures, but generally, it is necessary to ensure that the second adhesive surface has a limit protruding part in a straight line with the maximum distance from the second hinge surface, and the tangent plane of the limit protruding part is parallel to the second hinge surface, so that when the sample is bonded to the second adhesive surface, friction is performed through the limit protruding part; the second hinge surface is connected with two protruding second ball hinges, the outer wall of the second ball hinge is a spherical surface structure, the corresponding spherical radius of the outer wall of the second ball hinge is not more than the corresponding spherical radius of the inner wall of the second hinge groove, and the protruding height of the second ball hinge is greater than the depth of the first hinge groove, so that the second ball hinge can be movably embedded into the second hinge groove and at least part of it is outside the second hinge groove, the center distance of the two second ball hinges is equal to the center distance of the two second hinge grooves, and the center line of the two second ball hinges is perpendicular to the generatrix of the second adhesive surface. It should be noted that the second hinge surface in this application can be a structure coinciding with the shape of the cylindrical side wall, so the generatrix of the second hinge surface is the generatrix of the cylindrical side wall, but in some embodiments, the second hinge surface can have a more complex curved surface structure, but it can be determined that the curved surface structure should be formed by moving a certain generatrix in a plane perpendicular to the generatrix.

[0031] Referring to Figure 3 , the embodiment provides a structure of the above-mentioned frictional abnormal sound test carrier tool in the first working state, which comprises a first mounting piece 2 and a base 1, the first ball hinge 23 of the first mounting piece is movably embedded into the first hinge groove of the base, and the active gap 4a is formed between the first hinge surface of the first mounting piece and the mounting base surface of the base. Since the first ball hinge can roll in any direction in the first hinge groove, the first mounting piece can change the angle between itself and the base, so that when the first mounting piece is pressed on a pressed plane which is not completely parallel to the mounting base surface, the first adhesive surface can be adaptively adjusted to be parallel to the pressed plane and uniformly attached to the pressed plane.

[0032] Referring to Figure 4 , the embodiment provides a structure of the above-mentioned frictional abnormal sound test carrier tool in the second working state, which comprises a second mounting piece 3 and a base 1, the two second ball hinges 33 of the second mounting piece are movably embedded into the two second hinge grooves of the base, and the active gap 4b is formed between the second hinge surface of the second mounting piece and the mounting base surface of the base. In the plane perpendicular to the center line of the two ball hinges, the two second ball hinges can roll in the second hinge groove, so that the second adhesive surface can change the angle between its generatrix and the mounting base surface of the base, and when the second mounting piece is pressed on a pressed plane which is not completely parallel to the mounting base surface, the second adhesive surface can adaptively adjust the generatrix angle to uniformly attach the limit protruding part to the pressed plane.

[0033] As a further preferred embodiment, the outer wall of the first ball joint corresponds to a spherical radius greater than the inner wall of the second articulation groove corresponding to a spherical radius, so that the first ball joint cannot form a good movable fit with the second articulation groove to avoid the first ball joint being incorrectly inserted into the second articulation groove when fitting the first mounting member and the base, making the operation more convenient, while the second ball joint itself has two site restrictions and cannot be incorrectly inserted into the first articulation groove.

[0034] With reference to Figure 5 The utility model discloses in use first mounting member or second mounting member can be selected according to the different test object, and when the test mode is replaced, the base does not need to be detached from the spring frame, and the working efficiency is higher.

[0035] Finally, it should be noted that: the above only for the preferred embodiments of the utility model have been described, and are not used to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A fixture for testing friction noise, characterized in that: The device includes a base, a first mounting member, and a second mounting member. The base has a mounting surface, which has a first hinge portion and a second hinge portion. The first hinge portion includes a first hinge groove with a spherical inner wall, and the second hinge portion includes two second hinge grooves with spherical inner walls. The first mounting member has a first adhesive surface and a first hinge surface on its two sides. The first adhesive surface has a planar structure and is connected to a first ball joint with a raised outer spherical wall that can be movably embedded in the first hinge groove. The second mounting member has a second adhesive surface and a second hinge surface on its two sides. The second adhesive surface has a curved surface structure that protrudes away from the second hinge surface and is connected to two second ball joints with raised outer spherical walls that can be movably embedded in the second hinge grooves. The center distance between the two hinge grooves is equal to the center distance between the two second ball joints.

2. The friction noise testing carrier fixture according to claim 1, characterized in that: The first hinge slot is located on the line connecting the two second hinge slots.

3. The friction noise testing carrier fixture according to claim 2, characterized in that: The first hinge slot is located in the middle of the mounting base surface, and the two second hinge slots are symmetrically arranged with respect to the center of the first hinge slot.

4. The friction noise testing carrier fixture according to claim 1, characterized in that: The line connecting the centers of the two second ball joints is perpendicular to the generatrix of the second hinge surface.

5. The friction noise testing carrier fixture according to claim 1, characterized in that: The spherical radius corresponding to the outer wall of the first ball joint does not exceed the spherical radius corresponding to the inner wall of the first hinge groove, and the spherical radius corresponding to the outer wall of the second ball joint does not exceed the spherical radius corresponding to the inner wall of the second hinge groove.

6. The friction noise testing carrier fixture according to claim 5, characterized in that: The depth of the first hinge groove is 0.3 to 0.5 times the radius of the corresponding sphere, the protrusion height of the first ball joint is 0.5 to 0.7 times the radius of the corresponding sphere, and the protrusion height of the first ball joint is greater than the depth of the first hinge groove.

7. The friction noise testing carrier fixture according to claim 5, characterized in that: The depth of the second hinge groove is 0.3 to 0.5 times the radius of the corresponding sphere, the protrusion height of the second ball joint is 0.5 to 0.7 times the radius of the corresponding sphere, and the protrusion height of the second ball joint is greater than the depth of the second hinge groove.

8. The friction noise testing carrier fixture according to claim 1, characterized in that: The radius of the spherical surface corresponding to the first ball joint is greater than the radius of the spherical surface corresponding to the second hinge groove.

9. The friction noise testing carrier fixture according to claim 1, characterized in that: The base also includes a connecting part, which has a connecting hole.

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