CN217483796U

CN217483796U - Elasticity test fixture

Info

Publication number: CN217483796U
Application number: CN202220846417.XU
Authority: CN
Inventors: 杨卫海
Original assignee: Rongcheng Goer Technology Co ltd
Current assignee: Rongcheng Goer Technology Co ltd
Priority date: 2022-04-13
Filing date: 2022-04-13
Publication date: 2022-09-23
Anticipated expiration: 2032-04-13

Abstract

The utility model discloses an elasticity test fixture relates to detection device technical field, mainly includes parts such as base, support, test bar, pressure sensor and the portion that resets. Wherein, a positioning part for installing the elastic sheet is arranged on the base; the bracket is arranged on the base and is provided with a chute; the test rod is slidably assembled in the chute and used for applying pressure to the elastic sheet; the pressure sensor is arranged in the testing rod and used for detecting the pressure applied by the testing rod to the elastic sheet; the reset part is arranged on the bracket and used for driving the test rod to reset. The utility model discloses an elasticity test fixture simple structure, convenient operation can replace the drawing force test machine that the laboratory used at present stage to carry out the elasticity test to the shell fragment to satisfy the test requirement, test time is short, and is efficient.

Description

Elasticity test fixture

Technical Field

The utility model belongs to the technical field of detection device, specifically speaking relates to an experiment frock for testing part elasticity.

Background

Sheet metal parts can be arranged in a plurality of electronic products, and the sheet metal parts can play a role in providing elastic force and are commonly called elastic pieces in the industry. For example, the stainless steel component shown in fig. 1 is a spring piece for being mounted on a CPU of a motherboard, and the spring piece is used for applying elastic force to the CPU to ensure that the CPU is in close contact with a heat sink.

The spring plate 10 shown in fig. 1 includes a middle base plate 11 and wing plates 12 and 13 on both left and right sides thereof. The wing plates 12 and 13 on the left and right sides are bent, and the bent structure can provide elasticity. When the left and right wings 12 and 13 are flattened, the left and right wings 12 and 13 can provide elastic force in opposite directions due to the high strength of the material itself. When the wing plates 12, 13 on the left and right sides are restored to the original bent form, the elastic force disappears. The elastic force of the elastic sheet 10 directly affects the heat dissipation performance of the CPU, so that the elastic force of the elastic sheet 10 needs to be tested in the manufacturing stage of the electronic product.

In the existing elastic force testing method, the elastic sheet 10 is generally placed on a laboratory drawing force testing machine for testing. Generally, the drawing force testing machine in the current market integrates various testing functions, such as tensile, compression, bending, flattening and other tests on parts, so that the device structure is complex and the acquisition cost is high. The testing requirement of the elastic sheet 10 is single, and the elastic sheet 10 only needs to be flattened. Therefore, if the drawing force tester is specially purchased only for the single part such as the spring sheet 10, on one hand, the problems of small size and material consumption and resource waste of the tester exist; on the other hand, the method also has the defects of complex operation, long testing time, low efficiency and the like.

Disclosure of Invention

The utility model discloses to the elasticity test demand of shell fragment, provided an elasticity test fixture, can simplify test operation, improved efficiency of software testing.

In order to solve the design purpose, the utility model adopts the following technical scheme to realize:

an elasticity test tool comprises a base, a bracket, a test rod, a pressure sensor and a reset part; the base is provided with a positioning part for mounting the elastic sheet; the bracket is arranged on the base and is provided with a sliding chute; the testing rod is assembled in the sliding groove in a sliding mode and used for pressing the elastic sheet; the pressure sensor is arranged in the test rod and used for detecting the pressure applied by the test rod to the elastic sheet; the resetting part is arranged on the bracket and is used for driving the testing rod to reset.

In some embodiments of the present application, in order to limit the magnitude of the force applied to the elastic sheet by the testing rod, a limiting portion may be installed on the testing rod to limit the sliding distance of the testing rod in the sliding groove, and the sliding distance may be determined according to the stroke of the elastic sheet when the elastic sheet reaches the required deformation in the elastic force testing process.

In some embodiments of the application, it is preferable to design that the chutes are exposed at the head end and the tail end of the testing rod, the tail end of the testing rod is over against the arrangement position of the elastic sheet, the limiting part is installed on the side surface of the head end of the testing rod, and the distance between the limiting part and the support is configured to be consistent with the stroke of the elastic sheet when the elastic sheet reaches the required deformation in the elasticity testing process. Like this, support on and prevent the test rod when stopping sliding when spacing portion supports, the shell fragment just reaches required deformation, and the pressure value that detects through pressure sensor this moment can reflect the elasticity size of shell fragment more accurately.

In some embodiments of the present application, it is preferable to design the bracket as a door-shaped bracket, and the bracket is installed on the top surface of the base, and when the elastic sheet is installed on the positioning portion, the bracket is located right above the elastic sheet; the sliding groove comprises an inner sliding groove which is arranged on the top surface of the middle cross beam of the door-shaped support and penetrates through the bottom surface of the middle cross beam; the testing rod is arranged in the inner chute, and the tail end of the testing rod is opposite to the central position of the elastic sheet, so that the two sides of the elastic sheet can be uniformly stressed.

In some embodiments of the present application, two positioning portions may be provided, and a positioning seat and a positioning pin may be disposed in each positioning portion; the two positioning seats can be arranged on the top surface of the base, positioning holes are formed in the top surfaces of the positioning seats, and the positioning pins are detachably arranged in the positioning holes; the elastic sheet is provided with two end parts which are in relative position relation, and each end part is provided with an assembling hole; when the elastic sheet is placed on the elasticity test tool, the two end parts of the elastic sheet are respectively borne on the two positioning seats, and the assembly holes of the elastic sheet are vertically opposite to the positioning holes of the positioning seats and are limited by the positioning pins.

In some embodiments of the present application, the sliding groove may further include two outer sliding grooves provided on two side surfaces of the middle cross member in a relative positional relationship; configuring the test rod to comprise a main rod and two L-shaped side rods; wherein the main rod is slidably fitted in the inner slide groove; arrange two L type side levers branch in the relative both sides of mobile jib, and its horizontal part is connected to the mobile jib makes the top surface of mobile jib be cross, and the vertical part of two L type side levers is respectively in slide in two outer spouts, can improve the stationarity of test bar slip process from this.

In some embodiments of the present application, the stopper portion may be mounted on the main rod; the reset part is arranged below the horizontal part of the L-shaped side rod, so that the reset part drives the test rod to move upwards for resetting.

In some embodiments of the present application, the reset portion may be a spring, and preferably includes two springs, which are respectively located below the horizontal portions of the two L-shaped side bars, and apply upward elastic restoring force to the horizontal portions of the two L-shaped side bars, so that the test bar is stressed in a balanced manner during the reset process, and the stability of the reset movement of the test bar is improved.

In some embodiments of the present application, it is preferable that oil grooves are respectively formed in vertical portions of the main rod and the two L-shaped side rods of the test rod, and lubricating oil is injected into the oil grooves, so that friction between the test rod and the bracket can be reduced, and further, pressure applied to the test rod during an elasticity test process and an elastic restoring force provided by the spring during a return process of the test rod can be reduced.

In some embodiments of the present application, in order to achieve the purpose of visually displaying the test result, a display may be further disposed in the elasticity testing tool, and is preferably mounted on the bracket and connected to the pressure sensor through a cable. In order to prevent the cable from influencing the sliding process of the test rod in the sliding groove, a threading hole can be formed in the test rod, and the cable is configured to pass through the threading hole and reach the arrangement position of the pressure sensor so as to realize the electric communication between the pressure sensor and the display.

Compared with the prior art, the utility model discloses an advantage is with positive effect: the utility model discloses a set up the test bar in elasticity test fixture to configuration pressure sensor in the test bar can accomplish the automated inspection of shell fragment elasticity when utilizing the test bar to exert pressure to the shell fragment from this. Through setting up the portion that resets in elasticity test fixture, can accomplish the elasticity test at the test arm after, the automatic control test arm resets, makes ready for the test task of next shell fragment. The utility model discloses an elasticity test fixture simple structure, convenient operation can replace the drawing force test machine that the laboratory used at present stage to carry out the elasticity test to the shell fragment to satisfy the test requirement, test time is short, and is efficient.

Other features and advantages of the present invention will become apparent from the following detailed description of the embodiments of the invention, when read in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of a spring;

fig. 2 is a schematic structural diagram of an embodiment of the elasticity testing tool provided by the present invention;

fig. 3 is a schematic structural view of the elasticity testing tool shown in fig. 2 after the elastic sheet shown in fig. 1 is mounted thereon;

FIG. 4 is a longitudinal cross-sectional view of one embodiment of the spring force testing tool of FIG. 3;

FIG. 5 is a schematic structural view of one embodiment of the chute of FIG. 2;

FIG. 6 is a schematic diagram of the construction of one embodiment of the test stick of FIG. 2;

fig. 7 is a longitudinal sectional view of the test rod after assembly with the chute.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly unless otherwise specifically indicated and limited. For example, it may be a fixed connection, a detachable connection or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In this embodiment, an elastic force testing tool is designed for the elastic force testing requirement of the elastic sheet, and as shown in fig. 2, the elastic force testing tool mainly includes a base 20, a bracket 30, a testing rod 40, a pressure sensor 50, and the like.

The base 20 is a base and can be designed to be a flat cuboid structure, and the top surface can be provided with a positioning portion 21 for mounting the spring plate 10 to be tested.

In this embodiment, for the elongated elastic sheet 10, two positioning portions 21 may be disposed on the base 20 to respectively support and limit two ends of the elastic sheet 10 in the length direction.

In some embodiments, as shown in fig. 1, the elongated elastic sheet 10 is generally provided with mounting holes 14 at two ends thereof for mounting and fixing the elastic sheet 10 to other products. For the structural design of the elastic sheet 10, in this embodiment, when the positioning portions 21 are installed on the base 20, the relative positions between the two positioning portions 21 may be configured according to the relative positions of the two assembly holes 14 on the elastic sheet 10, as shown in fig. 3, two ends of the elastic sheet 10, which are provided with the assembly holes 14, are respectively supported on the two positioning portions 21, and other portions of the elastic sheet 10 are suspended, so that the test rod 40 applies pressure to the elastic sheet 10 to force the elastic sheet 10 to deform.

As a preferred embodiment, the two positioning portions 21 may adopt a structure design that the positioning seat 22 cooperates with the positioning pin 23, as shown in fig. 4. Specifically, two positioning bases 22 may be respectively mounted on the top surface of the base 20, and positioning holes 24 may be formed in the positioning bases 22. When the elastic sheet 10 is mounted on the positioning seat 22, the assembly hole 14 of the elastic sheet 10 is vertically aligned with the positioning hole 24 of the positioning seat 22, and then the positioning pin 23 is inserted into the positioning hole 24 to limit the elastic sheet 10, and the relative relationship after assembly is shown in fig. 3.

Referring to fig. 3, the bracket 30 is mounted on the base 20, preferably designed as a door-type bracket, and is mounted on the top surface of the base 20, and crosses the elastic piece 10, and is located right above the elastic piece 10. The bracket 30 is provided with a chute for assembling the test rod 40, so that the test rod 40 can move up and down along the chute, and pressure is applied to the elastic sheet 10 positioned below the bracket 30 to force the elastic sheet 10 to deform, thereby completing the elasticity test task.

In this embodiment, the sliding slot is preferably formed on the middle beam of the bracket 30 and located at the center of the middle beam, so that the force applying point of the testing rod 40 can be located at the center of the elastic sheet 10, for example, the middle substrate 11 of the elastic sheet 10 is applied with force, so as to ensure that the left and right side wing plates 12 and 13 of the elastic sheet 10 can be extended uniformly. Meanwhile, the elastic force of the elastic sheet 10 can be reflected more accurately by measuring the pressure applied to the center of the elastic sheet 10, so that the accuracy of the elastic force test is improved.

In some embodiments, the chute may comprise two sections, an inner chute 31 and an outer chute 32, as shown in fig. 5. The inner chute 31 is provided at the center of the middle cross beam of the door-shaped bracket 30 and vertically penetrates the middle cross beam. The two outer chutes 32 may be provided, which are respectively located on two opposite side surfaces of the middle cross beam, and are symmetrical with the inner chute 31 as a center.

The test bar 40 includes a main bar 41 and two L-shaped side bars 42, as shown in fig. 6. Wherein, the main rod 41 can be designed into a long column shape and is slidably assembled in the inner chute 31 of the bracket 30. After assembly, the head and tail ends of the main rod 41 are exposed out of the inner chutes 31. The two L-shaped side levers 42 are disposed on opposite sides of the main lever 41 and connected to opposite sides of the main lever 41 by horizontal portions thereof, respectively, so that the top surface of the head end of the test bar 40 is cross-shaped to smoothly apply force to the test bar 40. The vertical portions of the two L-shaped side bars 42 are parallel to the main bar 41 and are slidably fitted in the two outer slide grooves 32 of the bracket 30, respectively. This design can improve the stationarity of test bar 40 when moving up and down in the spout.

In some embodiments,

oil grooves

43, 44 may be formed in the main shaft 41 and the two side shafts 42 of the test bar 40, respectively, as shown in fig. 6. When the oil groove 43 is formed in the main rod 41, a plurality of annular oil grooves 43 may be sequentially formed in the height direction of the main rod 41, the plurality of annular oil grooves 43 are distributed in a specific area of the main rod 41 in parallel and at equal intervals, and the specific area is an area where the main rod 41 does not always expose the inner chute 31 when moving up and down in the inner chute 31, as shown in fig. 7. Oil grooves 44 opened in the two L-shaped side bars 42 are provided in the vertical portions of the side bars 42. A plurality of oil grooves 44 may be formed in the vertical portion of each side bar 42, and the oil grooves may be arranged in parallel at regular intervals in the height direction of the vertical portion. The oil grooves 44 formed in the L-shaped side bars 42 extend only on three sides of the vertical portions of the side bars 42 that contact the outer slide grooves 32, and the oil grooves 44 are not formed in the sides of the vertical portions that expose the outer slide grooves 32, thereby preventing oil leakage.

Lubricating oil is injected into the

oil grooves

43 and 44, and when the test rod 40 slides in the sliding groove, the lubricating oil can form an oil film on the inner surface of the sliding groove, so that the friction force between the test rod 40 and the sliding groove can be reduced, the technical effect of saving external force is achieved, and meanwhile, the process that the test rod 40 moves up and down along the sliding groove can be smoother.

A pressure sensor 50 is provided in the test bar 40, as shown in fig. 4, for detecting the pressure applied to the spring plate 10 by the test bar 40.

In this embodiment, the pressure sensor 50 may be disposed in the main rod 41 of the testing rod 40, for example, a columnar protrusion 45 may be formed at the bottom of the tail end of the main rod 41, the pressure sensor 50 may be disposed in the columnar protrusion 45, the columnar protrusion 45 may be used to contact the spring plate 10, and the pressure applied to the spring plate 10 by the columnar protrusion 45 may be sensed by the pressure sensor 50. When the elastic sheet 10 deforms to a specific state, for example, the elastic sheet 10 deforms from an original curved shape to a flat shape, the magnitude of the pressure detected by the pressure sensor 50 is the magnitude of the elastic force of the elastic sheet 10.

The main rod 41 of the test bar 40 is provided with a threading hole 46, and as shown in fig. 4 and 6, a cable 51 connected to the pressure sensor 50 is led out of the main rod 41 through the threading hole 46, and the led-out position is located in a region where the head end of the main rod 41 is always exposed out of the inner chute 31, and is preferably formed on one side surface of the main rod 41. Thus, when an external force is applied to the top surface of the test bar 40, the cable 51 is not affected.

In order to make the technician intuitively understand the test result, the cable 51 may be connected to the display 52, as shown in fig. 3 and 4, and the pressure detected by the pressure sensor 50 is displayed by the display 52, so as to obtain the elastic force of the elastic sheet 10.

In some embodiments, the display 52 may be mounted on the rack 30, such as on a vertical post on one side of the gantry 30, for viewing and recording by a technician.

In order to simplify the test operation of the technician, a stopper 47 may be provided on the test bar 40, as shown in fig. 2, for limiting a sliding distance (i.e., a downward movement stroke) of the test bar 40. The sliding distance can be determined according to the stroke of the elastic sheet 10 when the elastic sheet reaches the required deformation in the elastic force test process.

As a preferred embodiment, the limiting portion 47 may be designed to be cylindrical, and is installed on one side surface of the head end of the main rod 41 of the test rod 40, and is located above the bracket 30. The distance between the limiting portion 47 and the bracket 30 is configured to be consistent with the stroke of the elastic sheet 10 when the elastic sheet 10 reaches the required deformation in the elastic force testing process, and after the elastic sheet 10 is mounted on the positioning portion 21, the middle substrate 11 of the elastic sheet 10 is closely adjacent to or attached to the columnar protrusion 45 at the bottom of the main rod 41, as shown in fig. 3. Thus, when a downward external force is applied to the top surface of the test rod 40, the test rod 40 moves down along the slide groove. When the position-limiting portion 47 abuts against the support 30, the testing rod 40 stops moving downward, and the elastic piece 10 also reaches a desired deformation state, for example, a flat state. At this time, the elastic force value of the elastic sheet 10 is displayed by the pressure value displayed on the display 52.

After the elastic force test is finished, in order to enable the test rod 40 to automatically reset, the reset portion 33 is further disposed on the bracket 30, as shown in fig. 5, to drive the test rod 40 to move upwards along the sliding groove and return to the initial position.

In some embodiments, the reset portion 33 can be two springs, which are respectively disposed on the top surface of the middle cross beam of the bracket 30 and located at two opposite sides of the inner sliding groove 31, i.e., at a position between the inner sliding groove 31 and the two outer sliding grooves 32 and below the horizontal portions of the two L-shaped side bars 42 of the testing rod 40. When the test bar 40 moves down the slide groove, the horizontal portion of the L-shaped side lever 42 compresses the spring 33 until the stopper portion 47 abuts on the holder 30. When the external force applied to the test bar 40 disappears, the spring 33 rebounds to apply an upward elastic restoring force to the horizontal portions of the two L-shaped side bars 42 to drive the test bar 40 to move upward and return to be ready for the next elastic force test.

The elastic sheet 10 on the base 20 is taken down and replaced by a new one, and then the next round of elasticity test task can be continuously executed.

The elasticity testing tool of the embodiment is utilized to replace a traditional drawing force testing machine to carry out elasticity testing on the elastic sheet, so that the investment can be saved and the testing efficiency can be improved under the condition of ensuring the testing effect.

Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.

Claims

1. The utility model provides an elasticity test fixture which characterized in that includes:

the base is provided with a positioning part for mounting the elastic sheet;

the bracket is arranged on the base and is provided with a sliding groove;

the testing rod is assembled in the sliding groove in a sliding mode and used for pressing the elastic sheet;

the pressure sensor is arranged in the test rod and used for detecting the pressure applied by the test rod to the elastic sheet;

and the resetting part is arranged on the bracket and is used for driving the testing rod to reset.

2. The elasticity test tool according to claim 1, wherein a limiting part is mounted on the test rod and used for limiting the sliding distance of the test rod in the sliding groove, and the sliding distance is determined according to the stroke of the elastic sheet when the elastic sheet reaches the required deformation in the elasticity test process.

3. The elasticity test fixture according to claim 2, wherein the sliding grooves are exposed at the head end and the tail end of the test rod, the tail end of the test rod is opposite to the arrangement position of the elastic sheet, the limiting part is arranged on the side surface of the head end, and the distance between the limiting part and the support is consistent with the stroke of the elastic sheet when the elastic sheet reaches the required deformation in the elasticity test process.

4. The elasticity test tool of claim 2,

the bracket is a door-shaped bracket and is arranged on the top surface of the base, and when the elastic sheet is arranged on the positioning part, the bracket is positioned right above the elastic sheet;

the sliding groove comprises an inner sliding groove, is formed in the top surface of the middle cross beam of the door-shaped support and penetrates through the bottom surface of the middle cross beam;

the testing rod is arranged in the inner chute, and the tail end of the testing rod is over against the central position of the elastic sheet.

5. The elasticity test tool of claim 4,

the number of the positioning parts is two, and each positioning part comprises a positioning seat and a positioning pin; the two positioning seats are arranged on the top surface of the base, positioning holes are formed in the top surfaces of the positioning seats, and the positioning pins are detachably arranged in the positioning holes;

the elastic sheet is provided with two end parts which are in relative position relation, and each end part is provided with an assembling hole; when the elastic sheet is placed on the elasticity test tool, the two end parts of the elastic sheet are respectively borne on the two positioning seats, and the assembly holes of the elastic sheet are vertically opposite to the positioning holes of the positioning seats and are limited by the positioning pins.

6. The elasticity test tool of claim 4,

the sliding grooves also comprise two outer sliding grooves which are arranged on two side surfaces of the middle cross beam in a relative position relationship;

the test bar includes:

a main rod slidably fitted in the inner chute;

and the two L-shaped side rods are respectively arranged on two opposite sides of the main rod, the horizontal parts of the two L-shaped side rods are connected to the main rod, so that the top surface of the main rod is cross-shaped, and the vertical parts of the two L-shaped side rods respectively slide in the two outer sliding grooves.

7. The elasticity test fixture of claim 6,

the limiting part is arranged on the main rod;

the reset part is positioned below the horizontal part of the L-shaped side rod.

8. The elasticity test tool according to claim 7, wherein the reset portion is a spring, and comprises two springs, the two springs are respectively located below the horizontal portions of the two L-shaped side bars, and upward elastic restoring force is applied to the horizontal portions of the two L-shaped side bars.

9. The elasticity test tool according to claim 6, wherein oil grooves are respectively formed in the main rod of the test rod and the vertical portions of the two L-shaped side rods, and lubricating oil is filled in the oil grooves.

10. The elasticity test fixture of any one of claims 1 to 9, further comprising:

a display mounted on the bracket and connected to the pressure sensor through a cable; the test rod is provided with a threading hole, and the cable penetrates through the threading hole.