CN220490358U - Test fixture and point pressure test equipment - Google Patents

Abstract

The utility model relates to a test fixture and a spot pressure test device, wherein the test fixture comprises: a load-bearing table and a support assembly. The test device comprises a bearing table, and is characterized in that a test cavity is arranged in the bearing table, the test cavity penetrates through the bearing table along the upper and lower directions of the bearing table, the bearing table is provided with a positioning part, the positioning part is used for fixing a piece to be tested at the upper end of the test cavity, the support assembly comprises a support table, the projection of the support table is positioned in the projection area of the test cavity in the upper and lower directions of the bearing table, the support table is arranged below the positioning part, and at least part of the support table is arranged along the upper and lower directions of the bearing table and is adjustable relative to the position of the test cavity. The test fixture has higher test efficiency and is beneficial to reducing test cost.

Description

Test fixture and point pressure test equipment

Technical Field

The utility model relates to the technical field of jigs, in particular to a testing jig and point pressure testing equipment.

Background

For electronic devices such as mobile phones, tablet computers and notebook computers, the effect and performance of the screen of the electronic devices are of vital importance to the quality of the electronic devices. Therefore, in the production process of the electronic device, the screen is required to be subjected to a point pressing test finally, namely, an operator applies a certain pressing force to a certain point on the screen so as to simulate the hard object pressing scene in the use scene of the user.

In the related art, the testing jig of the screen spot pressure testing device adopts an integrated design, and when the testing jig is manufactured, the gap between the bottom of the jig and the screen or the whole machine is a fixed value. Therefore, when the structure of the screen or the whole machine is adjusted, a set of jigs needs to be prepared again, so that the testing efficiency is lower and the cost is higher.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent.

Therefore, the embodiment of the utility model provides the test fixture which has higher test efficiency and is beneficial to reducing test cost.

The embodiment of the utility model also provides a point pressure test device.

The test fixture of the embodiment of the utility model comprises: the test device comprises a bearing table, wherein a test cavity is arranged in the bearing table, the test cavity penetrates through the bearing table along the upper and lower directions of the bearing table, the bearing table is provided with a positioning part, and the positioning part is used for fixing a piece to be tested at the upper end of the test cavity; the supporting assembly comprises a supporting table, the projection of the supporting table is located in the projection area of the test cavity in the vertical direction orthogonal to the bearing table, the supporting table is arranged below the positioning part, and at least part of the supporting table is adjustable in position relative to the test cavity along the vertical direction of the bearing table.

According to the test fixture provided by the embodiment of the utility model, the positioning part is arranged on the bearing table, so that the to-be-tested piece can be positioned, and the to-be-tested piece is prevented from moving relative to the bearing table. Because the position of at least part of the supporting table along the up-down direction of the bearing table is adjustable relative to the test cavity, when the point pressure test is carried out on the piece to be tested, the gap size between the piece to be tested and the supporting table can be flexibly adjusted, so that when the point pressure test finds that the point pressure defect occurs in the current gap, the height of the supporting table can be adjusted until the point pressure test is not defective, the gap design between the whole machine and the screen is guided, the test efficiency of the piece to be tested is improved, and the test cost is reduced.

In some embodiments, the supporting table includes a plurality of supporting units, and the positions of the supporting units relative to the positioning portion along the up-down direction of the bearing table are adjustable.

In some embodiments, the upper end surfaces of the plurality of support units define a support surface, and the projected peripheral contour of the support surface coincides with the projected peripheral contour of the test cavity in the vertical direction orthogonal to the carrying table.

In some embodiments, the projections of the test cavity and the supporting units in the up-down direction of the bearing table are rectangular, and a plurality of supporting unit arrays are arranged in the test cavity.

In some embodiments, the support assembly further includes a plurality of adjusting members, the plurality of adjusting members are in one-to-one correspondence with the plurality of support units, the adjusting members are disposed at lower ends of the support units, and the adjusting members are used for adjusting positions of the support units in an up-down direction of the carrying platform.

In some embodiments, the adjusting part includes a connection rod and a driving part, an upper end of the connection rod is connected with the supporting unit, a lower end of the connection rod is connected with the driving part, and the driving part is used for driving the connection rod to move along an up-down direction of the bearing table.

In some embodiments, the adjusting part includes a threaded rod, a fastening nut and a fixing plate, the upper end of the threaded rod is connected with the supporting unit, the lower end of the threaded rod is penetrated through the fixing plate, the fastening nut is matched on the threaded rod and can move between a locking position and a releasing position, and in the locking position, the fastening nut is abutted against the fixing plate so as to limit the threaded rod to move relative to the fixing plate along the up-down direction of the bearing table; in the release position, the fastening nut is spaced apart from the fixed plate so that the threaded rod moves in an up-down direction of the carrying platform relative to the fixed plate.

In some embodiments, the positioning portion is a positioning groove, a bottom surface of the positioning groove is suitable for being attached to a bottom surface of the to-be-tested piece, and the positioning groove is arranged around the peripheral edge of the test cavity.

In some embodiments, the adjustable gap between the bottom surface of the positioning groove and the supporting surface of the supporting table is greater than or equal to 0.3 mm and less than or equal to 3 mm.

A point pressure test apparatus of another embodiment of the present utility model includes: a test jig, the test jig being any one of the embodiments of the present utility model; the spot pressing device is provided with a pressing head which is arranged above the test jig and can move along the up-down direction of the bearing table.

According to the spot pressure test equipment provided by the embodiment of the utility model, the positioning part is arranged on the bearing table, so that the to-be-tested piece can be positioned, and the to-be-tested piece is prevented from moving relative to the bearing table. Because the position of at least part of the supporting table along the up-down direction of the bearing table is adjustable relative to the test cavity, when the point pressure test is carried out on the piece to be tested, the gap size between the piece to be tested and the supporting table can be flexibly adjusted, so that when the point pressure test finds that the point pressure defect occurs in the current gap, the height of the supporting table can be adjusted until the point pressure test is not defective, the gap design between the whole machine and the screen is guided, the test efficiency of the piece to be tested is improved, and the test cost is reduced.

Drawings

FIG. 1 is a schematic diagram of a point pressure test apparatus according to an embodiment of the present utility model.

Fig. 2 is a top view of a test fixture according to an embodiment of the utility model.

FIG. 3 is a cross-sectional view of a test fixture according to an embodiment of the utility model.

Fig. 4 is a schematic diagram of the support assembly of the test fixture according to the embodiment of the utility model during adjustment.

FIG. 5 is a schematic diagram of a support assembly of a test fixture according to an embodiment of the utility model.

FIG. 6 is a schematic diagram of a support assembly of a test fixture according to another embodiment of the utility model.

Reference numerals:

1. a carrying platform; 11. a test chamber; 12. a positioning part; 121. a positioning groove;

2. a support assembly; 21. a support table; 211. a supporting unit; 212. a support surface; 22. an adjusting member; 221. a connecting rod; 222. a driving member; 2221. a cylinder; 223. a threaded rod; 224. a fixing plate; 225. a fastening nut;

3. a piece to be measured;

4. a pressure head.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

A test jig and a spot pressure test apparatus according to an embodiment of the present utility model are described below with reference to fig. 1 to 5.

As shown in fig. 1 to 4, a test fixture according to an embodiment of the present utility model includes: a carrying platform 1 and a support assembly 2. The test cavity 11 is arranged in the bearing table 1, the test cavity 11 penetrates through the bearing table 1 along the up-down direction of the bearing table 1, the bearing table 1 is provided with a positioning part 12, and the positioning part 12 is used for fixing the to-be-tested piece 3 at the upper end of the test cavity 11. The support assembly 2 comprises a support table 21, wherein in the vertical direction orthogonal to the carrying table 1, the projection of the support table 21 is positioned in the projection area of the test cavity 11, the support table 21 is arranged below the positioning part 12, and at least part of the support table 21 is adjustable in position relative to the test cavity 11 along the vertical direction of the carrying table 1. It is understood that the part 3 to be measured may be a screen or a complete machine.

According to the test fixture of the embodiment of the utility model, the positioning part 12 is arranged on the bearing table 1, so that the piece 3 to be tested can be positioned, and the piece 3 to be tested is prevented from moving relative to the bearing table 1. Because the position of at least part of supporting table 21 along the up-down direction of plummer 1 relative to test cavity 11 is adjustable, consequently when carrying out the point and pressing test to the piece 3 that awaits measuring, can adjust the clearance size between piece 3 and the supporting table 21 that awaits measuring in a flexible way to when the point and pressing test finds that the current clearance appears pressing badly, can adjust the height of supporting table 21 until the point presses the test to have not badly, and then instruct the clearance design between complete machine and the screen, improved the test efficiency of piece 3 that awaits measuring, and reduced the expense that needs redesign, production tool because of the structural design of piece 3 that awaits measuring becomes, be favorable to reducing test cost.

Alternatively, as shown in fig. 2 to 4, the support table 21 includes a plurality of support units 211, and the plurality of support units 211 are each adjustable in position relative to the positioning portion 12 in the up-down direction of the carrying table 1. It can be understood that the supporting units 211 are independent of each other, and each supporting unit 211 can define the height freely, so that the supporting units 211 at different positions can be adjusted in a targeted manner, and the gaps between the part to be tested 3 (screen or whole machine) and the respective positions of the supporting table 21 can be adjusted to the optimal size. The test result of the test fixture provided by the embodiment of the utility model can provide data support for the gap design of the whole machine structure, guide the gap design of the whole machine and a screen, and improve the test accuracy of the to-be-tested piece 3.

Alternatively, as shown in fig. 3 and 4, the upper end surfaces of the plurality of support units 211 define a support surface 212, and the projected outer peripheral contour of the support surface 212 coincides with the projected outer peripheral contour of the test chamber 11 in the up-down direction orthogonal to the stage 1. It is understood that the gap between the whole supporting surface 212 corresponding to the test cavity 11 and the part 3 to be tested is adjustable, in other words, the height of the supporting surface 212 at any position in the test cavity 11 is adjustable. Therefore, the test fixture of the embodiment of the utility model can perform the spot-press test of different gap values at each position of the to-be-tested piece 3 (screen or whole machine), thereby improving the flexibility and accuracy of the test fixture.

In a specific example, as shown in fig. 2 and 3, the projections of the test chamber 11 and the supporting units 211 in the up-down direction of the stage 1 are each rectangular, and a plurality of supporting units 211 are arranged in an array within the test chamber 11. It can be appreciated that, since the screen of the part 3 to be tested is generally rectangular in structure, the plurality of supporting units 211 are sequentially arranged along the transverse direction and the longitudinal direction of the test cavity 11 and form the rectangular supporting surface 212, so as to satisfy the spot-pressing test of most screens, and the manufacturing process is convenient, and the production cost is low.

In some embodiments, as shown in fig. 3 to 6, the support assembly 2 further includes a plurality of adjusting members 22, the plurality of adjusting members 22 are in one-to-one correspondence with the plurality of support units 211, the adjusting members 22 are disposed at the lower ends of the support units 211, and the adjusting members 22 are used for adjusting the positions of the support units 211 in the up-down direction of the carrying platform 1. It can be appreciated that the plurality of adjusting units respectively control the plurality of supporting units 211, so that each supporting unit 211 can be lifted and lowered respectively, thereby improving the convenience of testing the testing fixture. In addition, since the adjusting part 22 is disposed at the lower end of the supporting unit 211, it does not interfere with the test in the test chamber 11, so that the structure of the test fixture is more reasonable.

Alternatively, as shown in fig. 5, the adjusting part 22 includes a connection rod 221 and a driving member 222, an upper end of the connection rod 221 is connected to the supporting unit 211, a lower end of the connection rod 221 is connected to the driving member 222, and the driving member 222 is used to drive the connection rod 221 to move in the up-down direction of the loading table 1. It will be appreciated that the adjustment member 22 is adjusted using an automatic control mechanism, and the driving member 222 may be a cylinder 2221 or an electric cylinder. In one example, as shown in fig. 5, the driver 222 is a cylinder 2221. The cylinder 2221 is provided at the lower end of the connection rod 221, and a piston rod of the cylinder 2221 is connected to the lower end of the connection rod 221. The test fixture according to the embodiment of the utility model can automatically adjust the supporting unit 211 by setting the adjusting part 22 to the above structure, thereby improving the convenience of the test fixture in use.

Alternatively, as shown in fig. 6, the adjusting part 22 includes a threaded rod 223, a fastening nut 225, and a fixing plate 224, an upper end of the threaded rod 223 is connected to the supporting unit 211, a lower end of the threaded rod 223 is penetrated through the fixing plate 224, and the fastening nut 225 is fitted on the threaded rod 223 and is movable between a locking position and a releasing position. In the locked position, the fastening nut 225 abuts against the fixing plate 224 to restrict the threaded rod 223 from moving in the up-down direction of the loading table 1 relative to the fixing plate 224. In the release position, the fastening nut 225 is spaced apart from the fixing plate 224 so that the threaded rod 223 moves in the up-down direction of the loading table 1 with respect to the fixing plate 224.

For example, as shown in fig. 6, there are two fastening nuts 225, and the two fastening nuts 225 are disposed on the upper and lower sides of the fixing plate 224, respectively. When the height of the supporting unit 211 is required to be adjusted, the two fastening nuts 225 may be unscrewed so that the threaded rod 223 may slide in the up-down direction with respect to the fixing plate 224. After the supporting unit 211 is adjusted to the set position, the upper and lower fastening nuts 225 may be tightened to fix the threaded rod 223. The test fixture of the embodiment of the utility model can facilitate the processing and manufacturing of the adjusting part 22 by arranging the adjusting part 22 in the structure, and has lower cost.

In some embodiments, as shown in fig. 2 and 3, the positioning portion 12 is a positioning groove 121, and a bottom surface of the positioning groove 121 is adapted to be fitted to a bottom surface of the to-be-tested piece 3, and the positioning groove 121 is disposed around an outer peripheral edge of the test cavity 11. It can be understood that the bottom surface of the positioning groove 121 is a step surface, the peripheral outline of the positioning groove 121 is slightly larger than the peripheral outline of the to-be-measured member 3, and after the to-be-measured member 3 is mounted to the positioning groove 121, the bottom surface of the positioning groove 121 is attached to the bottom surface of the to-be-measured member 3, and the side wall of the positioning groove 121 is substantially attached to the side wall of the to-be-measured member 3, thereby completing the positioning process of the to-be-measured member 3. The test fixture of the embodiment of the utility model can facilitate the processing and manufacturing of the bearing table 1 by arranging the positioning part 12 with the structure, and has better positioning effect.

Alternatively, the adjustable gap between the bottom surface of the positioning groove 121 and the top surface of the support table 21 is 0.3 mm or more and 3 mm or less. It is understood that the gap between the bottom surface of the member 3 to be measured and the support surface 212 of the support table 21 ranges from 0.3 mm to 3 mm. For example, the gap between the bottom surface of the workpiece 3 and the support surface 212 of the support table 21 is 0.3 mm, 1.0 mm, 1.5 mm, 2.0 mm, 2.5 mm, 3.0 mm. The inventor of the present application found through experimental study that when the gap between the bottom surface of the positioning groove 121 and the top surface of the supporting table 21 is within the above range, the testing requirements of most screen spot presses can be satisfied, so that the testing range of the testing jig is wider.

As shown in fig. 1, a spot pressing test apparatus according to another embodiment of the present utility model includes a test fixture and a spot pressing device. The test fixture is provided with the pressure head 4, and the pressure head 4 is arranged above the test fixture and can move along the up-down direction of the bearing table 1.

According to the spot pressure test equipment of the embodiment of the utility model, the positioning part 12 is arranged on the bearing table 1, so that the piece 3 to be tested can be positioned, and the piece 3 to be tested is prevented from moving relative to the bearing table 1. Because the position of at least part of supporting table 21 along the up-down direction of plummer 1 relative to test cavity 11 is adjustable, consequently when carrying out the point and pressing test to the piece 3 that awaits measuring, can adjust the clearance size between piece 3 and the supporting table 21 that awaits measuring in a flexible way to when the point and pressing test finds that the current clearance appears pressing badly, can adjust the height of supporting table 21 until the point presses the test to have not badly, and then instruct the clearance design between complete machine and the screen, improved the test efficiency of piece 3 that awaits measuring, and reduced the expense that needs redesign, production tool because of the structural design of piece 3 that awaits measuring becomes, be favorable to reducing test cost.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the utility model.

Claims (10)

1. A test fixture, its characterized in that includes:

the test device comprises a bearing table, wherein a test cavity is arranged in the bearing table, the test cavity penetrates through the bearing table along the upper and lower directions of the bearing table, the bearing table is provided with a positioning part, and the positioning part is used for fixing a piece to be tested at the upper end of the test cavity;

the supporting assembly comprises a supporting table, the projection of the supporting table is located in the projection area of the test cavity in the vertical direction orthogonal to the bearing table, the supporting table is arranged below the positioning part, and at least part of the supporting table is adjustable in position relative to the test cavity along the vertical direction of the bearing table.

2. The test fixture of claim 1, wherein the support table comprises a plurality of support units, and the positions of the support units relative to the positioning portion along the up-down direction of the bearing table are adjustable.

3. The test fixture of claim 2, wherein the upper end surfaces of the plurality of support units define a support surface, and wherein a projected peripheral contour of the support surface coincides with a projected peripheral contour of the test cavity in an up-down direction orthogonal to the carrier.

4. The test fixture of claim 3, wherein the test chamber and the support unit are each rectangular in projection in the up-down direction of the carrier, and a plurality of the support unit arrays are disposed in the test chamber.

5. The test fixture of claim 2, wherein the support assembly further comprises a plurality of adjusting members, the plurality of adjusting members are in one-to-one correspondence with the plurality of support units, the adjusting members are disposed at lower ends of the support units, and the adjusting members are used for adjusting positions of the support units in the up-down direction of the bearing table.

6. The test fixture of claim 5, wherein the adjusting member comprises a connecting rod and a driving member, the upper end of the connecting rod is connected to the supporting unit, the lower end of the connecting rod is connected to the driving member, and the driving member is used for driving the connecting rod to move along the up-down direction of the bearing table.

7. The test fixture of claim 5, wherein the adjusting member comprises a threaded rod, a fastening nut and a fixing plate, the upper end of the threaded rod is connected with the supporting unit, the lower end of the threaded rod is arranged on the fixing plate in a penetrating manner, the fastening nut is matched on the threaded rod and can move between a locking position and a releasing position, and in the locking position, the fastening nut is abutted against the fixing plate so as to limit the threaded rod to move relative to the fixing plate along the up-down direction of the bearing table; in the release position, the fastening nut is spaced apart from the fixed plate so that the threaded rod moves in an up-down direction of the carrying platform relative to the fixed plate.

8. The test fixture of any one of claims 1-7, wherein the positioning portion is a positioning groove, a bottom surface of the positioning groove is adapted to fit with a bottom surface of the part under test, and the positioning groove is disposed around an outer peripheral edge of the test cavity.

9. The test fixture of claim 8, wherein the adjustable gap between the bottom surface of the positioning slot and the support surface of the support table is greater than or equal to 0.3 mm and less than or equal to 3 mm.

10. A spot pressure test apparatus, comprising:

a test jig according to any one of claims 1 to 9;

the spot pressing device is provided with a pressing head which is arranged above the test jig and can move along the up-down direction of the bearing table.