CN218450539U

CN218450539U - Test fixture for inspecting product performance

Info

Publication number: CN218450539U
Application number: CN202222555493.8U
Authority: CN
Inventors: 刘金华
Original assignee: Gettop Acoustic Co Ltd
Current assignee: Gettop Acoustic Co Ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2023-02-03
Anticipated expiration: 2032-09-27

Abstract

The utility model provides a test fixture of inspection product performance, including base subassembly and upper cover subassembly, the base subassembly includes fixed connection's base frame, base mold insert and product locating piece in proper order, the upper cover subassembly includes fixed connection's upper cover frame and upper cover mold insert, be used for placing the product that awaits measuring on the product locating piece, upper cover mold insert pressfitting is on the product, upper cover frame and base frame fixed connection. The base frame and the upper cover frame are universal parts, do not need to be replaced according to different products, only need to manufacture the matched base insert, the matched product positioning block and the matched upper cover insert, and have the advantages of less overall used materials, low processing cost and short manufacturing period; and set up the front chamber sealing washer between base mold insert and product locating piece, the surface that the base mold insert set up the front chamber seal groove is smooth plane, and the area is big, and the width of front chamber sealing washer can be done greatly, and the front chamber sealing washer can not be damaged easily, reduces the change frequency.

Description

Test fixture for inspecting product performance

Technical Field

The utility model relates to a test inspection of speaker, specifically speaking relates to a test fixture of performance is produced in inspection.

Background

The test of the loudspeaker needs to be carried out on a baffle plate, and various performances of the loudspeaker are tested, including frequency response, distortion and the like. The existing testing jig is structurally shown in fig. 4-5, a through hole is arranged on a base and used as a sound outlet, a groove is formed in the circumferential direction of the sound outlet, a product is placed in the groove, a front cavity sealing ring is arranged between the circumferential direction of the groove and the sound outlet and used for sealing, an upper cover with a pressing needle and a probe is pressed on the other side of the product, a rear cavity sealing ring is arranged between the upper cover and the groove and used for sealing, and finally the upper cover is pressed tightly through an elbow clamp. However, there are the following problems: firstly, each set of base, upper cover, elbow clamp and the like can only test one corresponding product, and each product is required to be provided with a test fixture of the base, the upper cover, the elbow clamp and the like, so that the overall used material and processing cost is higher, and the manufacturing period is long; secondly, the gland needs to be made of plastic non-conductive materials, so that the hardness and the bending resistance are low, and the elbow clip (pressing device) has deformation or fracture risks when being pressed down, so that the tested performance is changed; thirdly, the sealed limit of using of sound hole department is narrower, therefore the limit of front chamber sealing washer will be some narrowly, leads to the front chamber sealing washer to be damaged easily, has improved the change frequency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the weak point of above-mentioned conventional art, provide a test fixture of product performance is produced in the inspection.

The purpose of the utility model is achieved through the following technical measures: the utility model provides a test fixture of inspection product performance which characterized in that: the base assembly comprises a base frame, a base insert and a product positioning block which are fixedly connected in sequence, the upper cover assembly comprises an upper cover frame and an upper cover insert which are fixedly connected, a product to be tested is placed on the product positioning block, the upper cover insert is pressed on the product, and the upper cover frame is fixedly connected with the base frame.

As a preferred scheme, one side of the base insert is in contact with the base frame, the other side of the base insert is in contact with the product positioning block, the base insert is provided with a sound outlet, the product positioning block is provided with a product mounting hole, and the product placing hole and the sound outlet are concentrically arranged.

As a preferred scheme, a front cavity sealing ring is arranged between the base insert and the product positioning block, a front cavity sealing groove is formed in one side, close to the product positioning block, of the base insert, the front cavity sealing groove is formed in the circumferential direction of the sound outlet hole, and the front cavity sealing ring is installed in the front cavity sealing groove.

As a preferable scheme, the area of the product placing hole is larger than that of the sound outlet hole, and the area of the product placing hole is smaller than that enclosed by the front cavity sealing groove.

As a preferable scheme, the surface of the base insert provided with the front cavity sealing groove is a flat plane.

As a preferable scheme, the upper cover insert is located at the center of the upper cover frame, and the upper cover insert is arranged corresponding to the product placement hole on the product positioning block.

Preferably, the upper cover insert and the upper cover frame are fixedly connected by a fastening bolt, and the fastening bolt is arranged along the horizontal direction.

As a preferable scheme, an upper cover mounting hole is formed in the base frame, and the upper cover frame is placed in the upper cover mounting hole of the base frame.

As an optimal scheme, be provided with the multiunit flange of subtend along circumference on the upper cover frame, one of them set of flange length is great, and other flange length is less, and the great flange of length and the side contact setting of upper cover mounting hole, install the elbow on the base frame and press from both sides, the elbow presss from both sides and can compress tightly the great flange of length, and there is the space in the less flange of length and the side of relative upper cover mounting hole, fastening bolt installs on the less flange of length.

Preferably, the upper cover frame is made of metal.

Owing to adopted above-mentioned technical scheme, compare with prior art, the utility model has the advantages that: the base assembly and the upper cover assembly are assembled, the base frame and the upper cover frame are universal parts, replacement is not required according to different products, only the matched base insert, the matched product positioning block and the matched upper cover insert are required to be manufactured, the overall used materials are few, the processing cost is low, and the manufacturing period is short; a front cavity sealing ring is arranged between the base insert and the product positioning block, the surface of the front cavity sealing groove of the base insert is a flat plane, the area is large, the width of the front cavity sealing ring can be large, the front cavity sealing ring cannot be easily damaged, and the replacement frequency is reduced; the upper cover mold insert is used for compressing tightly the product and detecting, and does not have insulating requirement to the upper cover frame, and the upper cover frame is the metal material, can not have crooked or fracture risk when the elbow presss from both sides the pushing down, can improve the stability of test.

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

Drawings

Fig. 1 is a schematic diagram of the overall explosion structure of the testing jig for inspecting the product performance of the present invention.

Fig. 2 is a schematic view of a top view structure of the testing jig for inspecting product performance of the present invention.

Fig. 3 is a schematic B-B sectional structural diagram of the testing jig for inspecting product performance of the present invention.

Fig. 4 is a schematic diagram of the background art structure of the present invention.

Fig. 5 is a schematic diagram of the background art structure of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to 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", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Example (b): as shown in fig. 1-3, a test fixture for inspecting product performance comprises a base assembly and an upper cover assembly, wherein the base assembly comprises a base frame 1, a base insert 2 and a product positioning block 3 which are fixedly connected in sequence, a through hole is formed in the base frame 1, a first step 4, a second step 5 and an upper cover mounting hole 6 are sequentially formed in the through hole, the base insert 2 is fixedly connected to the base frame 1, a extending edge 7 is arranged in the circumferential direction of the base insert 2, the extending edge 7 is located on the first step 4, and the base insert 2 and the base frame 1 are fixedly connected through bolts.

Be provided with the play sound hole 8 with the through-hole intercommunication on the base mold insert 2, it is located the central point of base mold insert 2 to go out sound hole 8 and put, the inboard of base mold insert 2 is provided with front chamber seal groove 9, front chamber seal groove 9 sets up along a sound hole 8 circumference, front chamber seal groove 9 is used for placing front chamber sealing washer 10 this embodiment, as shown in fig. 1 and fig. 3, the surface that base mold insert 2 set up front chamber seal groove 9 is smooth plane, the area is big, front chamber sealing washer 10's width can be done greatly, front chamber sealing washer 10 can not damage easily, reduce the change frequency. In this embodiment, the inner side is a side close to the center, and correspondingly, the outer side is a side close to the outside.

One side that first step 4 was kept away from to base mold insert 2 still is provided with product locating piece 3, in this embodiment, the circumference size of product locating piece 3 is unanimous with the circumference size of base mold insert 2 to be set up, product locating piece 3 passes through bolt fixed connection with base mold insert 2, the central point of product locating piece 3 puts and is provided with the product and places hole 11, the product is placed hole 11 and is gone out sound hole 8 and set up with one heart, the area that hole 11 was placed to the product is greater than the area of going out sound hole 8, be less than the area that front chamber seal groove 9 encloses. As shown in fig. 3, during assembly, the base insert 2 is fixed on the base frame 1, the front cavity sealing ring 10 is placed in the front cavity sealing groove 9, and the product positioning block 3 is fixed by a bolt, in this embodiment, the bolt connecting holes of the product positioning block 3 and the base insert 2 are overlapped, that is, the product positioning block 3 and the base insert 2 can be fixed on the base frame 1 by only one set of bolt. In this way, the entire base assembly is assembled.

As shown in fig. 1 to 3, the upper cover assembly includes an upper cover frame 12 and an upper cover insert 13, which are fixedly connected, the upper cover insert 13 is located at a central position of the upper cover frame 12, the upper cover insert 13 is disposed corresponding to the product placement hole 11 on the product positioning block 3, a press pin 14 and a probe 15 are disposed on the upper cover insert 13, the upper cover insert 13 and the upper cover frame 12 are fixedly connected by a fastening bolt 16, in this embodiment, the fastening bolt 16 is disposed along a horizontal direction, and the fastening bolt 16 penetrates through a side wall of the upper cover frame 12 and presses the upper cover insert 13, so as to fix the upper cover insert 13 and the upper cover frame 12.

Base subassembly and upper cover subassembly are the equipment and form, and wherein base frame 1 and upper cover frame 12 need not to change according to the difference of product for general part, only need make supporting base mold insert 2, product locating piece 3 and upper cover mold insert 13 can, the material of whole use is few, and the processing cost is low, and the preparation cycle is short.

As shown in fig. 1-2, the upper cover frame 12 is placed in the upper cover mounting hole 6 of the base frame 1, the shape of the upper cover frame 12 is the same as the shape of the upper cover mounting hole 6, a plurality of sets of opposite support edges 17 are circumferentially arranged on the upper cover frame 12, one set of support edges 17 is longer, and the other support edges 17 are shorter.

In this embodiment, the pressing pin 14 and the probe 15 are mounted on the upper cover insert 13, so that there is no special requirement for the material of the upper cover frame 12, and insulation is not required.

When the cover assembly is assembled, the cover insert 13 and the cover frame 12 are fixed together by the fastening bolts 16, and then the probe 15 and the pressing pin 14 are installed at the corresponding positions of the cover insert 13. When testing the product, put into the product on the product locating piece 3 by survey product 20 and place in the hole 11, one side orientation play sound hole 8 setting of survey product 20, and circumference is pressed on ante-chamber sealing washer 10, ante-chamber sealing washer 10 seals the product ante-chamber, keep away from base mold insert 2 one side installation back chamber sealing washer 19 at product locating piece 3, and press the upper cover subassembly on product locating piece 3, as shown in fig. 3, back chamber sealing washer 19 is located between product locating piece 3 and upper cover mold insert 13, seal the product back chamber, press tightly upper cover frame 12 with elbow clamp 18, detect the product can.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a test fixture of inspection product performance which characterized in that: the base assembly comprises a base frame, a base insert and a product positioning block which are fixedly connected in sequence, the upper cover assembly comprises an upper cover frame and an upper cover insert which are fixedly connected, a product to be tested is placed on the product positioning block, the upper cover insert is pressed on the product, and the upper cover frame is fixedly connected with the base frame.

2. The test fixture of claim 1, wherein: one side of the base insert is in contact with the base frame, the other side of the base insert is in contact with the product positioning block, a sound outlet hole is formed in the base insert, a product mounting hole is formed in the product positioning block, and the product placing hole and the sound outlet hole are concentrically arranged.

3. A test fixture for inspecting product performance as claimed in claim 2, wherein: be provided with the antetheca sealing washer between base mold insert and the product locating piece, one side that the base mold insert is close to the product locating piece is provided with the antetheca seal groove, the antetheca seal groove sets up along a sound hole circumference, the antetheca sealing washer is installed in the antetheca seal groove.

4. A test fixture for inspecting product performance as claimed in claim 3, wherein: the area of the product placing hole is larger than that of the sound outlet hole, and the area of the product placing hole is smaller than that enclosed by the front cavity sealing groove.

5. A test fixture for inspecting product performance as claimed in claim 3, wherein: the surface of the base insert provided with the front cavity sealing groove is a flat plane.

6. A test fixture for inspecting product performance as claimed in claim 2, wherein: the upper cover insert is located at the center of the upper cover frame, and the upper cover insert corresponds to the product placing hole in the product positioning block.

7. A test fixture for inspecting product properties according to any one of claims 1 to 6, wherein: the upper cover insert and the upper cover frame are fixedly connected through a fastening bolt, and the fastening bolt is arranged along the horizontal direction.

8. The test fixture of claim 7, wherein: the base frame is provided with an upper cover mounting hole, and the upper cover frame is placed in the upper cover mounting hole of the base frame.

9. The test fixture of claim 8, wherein: the utility model discloses a fixed-top cover frame, including upper cover frame, elbow clamp, upper cover mounting hole, upper cover frame, lower cover mounting hole, the upper cover frame is last to be provided with the multiunit of subtend flange along circumference, and one of them group flange length is great, and other flange length is less, and the great flange of length sets up with the side contact of upper cover mounting hole, it presss from both sides to install the elbow on the base frame, the elbow presss from both sides and can compress tightly the great flange of length, and there is the space in the less flange of length and the side of relative upper cover mounting hole, fastening bolt installs on the less flange of length.

10. The test fixture of claim 1, wherein: the upper cover frame is made of metal.