Drawing type injection molding box for resistance strain gauge

Abstract

The utility model relates to the field of chip packaging and transportation, in particular to a drawing type injection molding box for a resistance strain gauge, which comprises an outer shell and an inner box, the inner box is installed in the outer shell in a drawing mode, the outer shell comprises a top plate and two side plates, L-shaped sliding edges are arranged at the bottoms of the side plates, the inner box comprises a box body and a box cover, the box body is a hollow box body with an opening in the upper portion, and the box cover is a hollow box body with an opening in the lower portion. Sliding grooves matched with the sliding edges are formed in the outer side walls, corresponding to the side plates, of the box body, the box cover covers an opening of the box body, a groove is formed in the upper surface of the box cover, an arc-shaped limiting plate is arranged on the lower surface of a top plate of the shell, the arc-shaped bottom of the limiting plate is in contact connection with the inner groove bottom face of the groove, and the limiting plate is a PVC injection molding plate. The beneficial effects of the utility model lie in that the open-type box body is convenient for putting in and taking out the chip, the limiting plate effectively prevents the inner box from sliding out of the housing, and the inner box is limited and fixed.

Description

Technical Field

[0001] The utility model relates to the field of chip packaging and transportation, in particular to a pull-out injection molding box for a resistance strain gauge. Background Art

[0002] The resistance strain gauge is a converter that can convert the strain on the engineering component, that is, the dimensional change, into a resistance change. It is also called a resistance strain gauge. It is generally composed of a sensitive grid, a lead, an adhesive, a substrate and a cover layer. The materials used as the substrate include paper, film, glass fiber cloth, metal foil (or metal mesh), etc. The sensitive grid is fixed on the substrate or the surface of the component. The cover layer includes paper, film and glass fiber cloth, etc. The adhesive used in the film making can also be coated on the sensitive grid as a protective layer. It can be seen that the resistance strain gauge is a thin chip product that is easy to bend and deform.

[0003] Therefore, making a packaging product that can prevent the resistance strain gauge from being squeezed and deformed is a technical problem we need to solve. Utility Model Content

[0004] The purpose of the utility model is to provide a chip carrier box that can stably clamp chips and facilitate transportation in order to address the defects and shortcomings of the prior art.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pull-out injection molded box for a resistance strain gauge, comprising an outer shell 1 and an inner box 2, the inner box 2 can be pulled out and installed in the outer shell 1, the outer shell 1 comprises a top plate 11 and two side plates 12, the bottom of the side plate 12 is provided with an L-shaped sliding edge 121, the inner box 2 comprises a box body 21 and a box cover 22, the box body 21 is a hollow box body with an opening at the top, and the outer side walls of the box body 21 corresponding to the side plates 12 are provided with sliding grooves 211 that match the sliding edge 121, the box cover 22 covers the opening of the box body 21, and a groove 221 is provided on the upper surface of the box cover 22, and an arc-shaped limit plate 3 is provided on the lower surface of the top plate 11 of the outer shell 1, and the arc-shaped bottom of the limit plate 3 is in contact with the bottom surface of the inner groove of the groove 221, and the limit plate 3 is a PVC injection molded plate.

[0006] The inner box 2 matches the inner cavity size of the outer shell 1 .

[0007] Both ends of the limiting plate 3 are fixed on the lower surface of the top plate 11 .

[0008] The limiting plate 3 and the housing 1 are integrally injection-molded using PVC material.

[0009] The lower surface of the box cover 22 is provided with a boss 222 matching the opening of the box body 21 , and the boss 222 is clamped in the opening of the box body 21 .

[0010] A ridge 223 is disposed on the lower surface of the boss 222 .

[0011] Compared with the prior art, the pull-out injection molding box for a resistance strain gauge of the utility model has the following beneficial effects: the open box body is convenient for putting in and taking out the chip, the box cover and the outer shell form a double-layer protective structure with strong safety; the overall modular design can be reused and recycled, reducing economic costs; the limiting plate effectively prevents the inner box from sliding out of the outer shell, and limits and fixes the inner box; the ridges or bumps on the box cover can be designed and manufactured according to the shape of the chip installed, which can better fix the chip. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a schematic diagram of the shell structure of the utility model.

[0015] Figure 3 It is a schematic diagram of the box structure of the utility model.

[0016] Figure 4 It is a schematic diagram of the box cover structure of the utility model.

[0017] Figure 5 It is a schematic diagram of the inner box structure of the utility model.

[0018] Explanation of the reference numerals: outer shell 1 , inner box 2 , top plate 11 , side plate 12 , sliding edge 121 , box body 21 , sliding groove 211 , box cover 22 , groove 221 , limiting plate 3 , boss 222 , convex edge 223 . DETAILED DESCRIPTION

[0019] See also Figure 1-Figure 4As shown, the technical solution adopted in this specific embodiment is: a pull-out injection molding box for a resistance strain gauge, which includes an outer shell 1 and an inner box 2 whose inner cavity size matches that of the outer shell 1, and the inner box 2 can be pulled out and installed in the outer shell 1, the outer shell 1 includes a top plate 11 and two side plates 12, and the bottom of the side plates 12 is provided with an L-shaped sliding edge 121 for the inner box 2 to be pulled out and slid, the inner box 2 includes a box body 21 and a box cover 22 matching the box body 21, the box body 21 is a hollow box body with an opening on the top, and the open box body is convenient for putting in and taking out the chip, and the outer side walls of the box body 21 corresponding to the side plates 12 are provided with sliding edges 121 that match the sliding edges 121. The groove 211, the sliding edge 121 and the sliding groove 211 cooperate to enable the inner box 2 to slide in the outer shell 1 in a pull-out manner. The box cover 22 covers the opening of the box body 21. The box cover and the outer shell form a double-layer protection structure, and the chip is not easy to fall out, which is safe. A groove 221 is arranged on the upper surface of the box cover 22, and an arc-shaped limiting plate 3 is arranged on the lower surface of the top plate 11 of the outer shell 1. The two ends of the limiting plate 3 are fixed on the lower surface of the top plate 11. When the inner box 2 is arranged in the outer shell 1, the limiting plate 3 is arranged in the groove 221, and the arc-shaped bottom of the limiting plate 3 is in contact with the inner groove bottom surface of the groove 221. Preferably, the limiting plate 3 and the outer shell 1 are integrally injection molded by PVC material. The limiting plate effectively prevents the inner box from sliding out of the outer shell and limits and fixes the inner box.

[0020] In order to make the box cover 22 cover the box body 21 more stably and firmly, a boss 222 matching the opening of the box body 21 is provided on the lower surface of the box cover 22. The boss 222 is clamped in the opening of the box body 21 to prevent the box cover 22 from sliding out at the front or rear side of the outer shell 1 when the inner box 2 is installed in the outer shell 1.

[0021] In order to better fix the chip in the box body 21, a ridge 223 that matches the chip structure is provided on the lower surface of the boss 222 to prevent the chip from shaking and being damaged in the box body 21 during transportation. The ridge or bump on the box cover can be designed and manufactured according to the shape of the chip to be installed, which can better fix the chip.

[0022] Compared with the prior art, the pull-out injection molding box for a resistance strain gauge of the utility model has the following beneficial effects: the open box body is convenient for putting in and taking out the chip, the box cover and the outer shell form a double-layer protection structure, the chip is not easy to fall out, and it is highly safe; the overall design is modular, which can be recycled and reused, reducing economic costs; the limiting plate effectively prevents the inner box from sliding out of the outer shell, and limits and fixes the inner box; the ridges or bumps on the box cover can be designed and manufactured according to the shape of the chip installed, which can better fix the chip.

[0023] The above description is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A pull-out injection molding box for a resistance strain gauge, characterized in that: The utility model comprises an outer shell (1) and an inner box (2), wherein the inner box (2) can be pulled out and installed in the outer shell (1), wherein the outer shell (1) comprises a top plate (11) and two side plates (12), wherein the bottom of the side plates (12) is provided with an L-shaped sliding edge (121), wherein the inner box (2) comprises a box body (21) and a box cover (22), wherein the box body (21) is a hollow box body with an opening at the top, wherein the outer side walls of the box body (21) corresponding to the side plates (12) are provided with sliding grooves (211) matching with the sliding edge (121), wherein the box cover (22) covers the opening of the box body (21), wherein the upper surface of the box cover (22) is provided with a groove (221), and an arc-shaped limiting plate (3) is provided on the lower surface of the top plate (11) of the outer shell (1), wherein the arc-shaped bottom of the limiting plate (3) is in contact with and connected to the inner groove bottom surface of the groove (221), and wherein the limiting plate (3) is a PVC injection molded plate.

2. The pull-out injection molding box for a resistance strain gauge according to claim 1, characterized in that: The inner box (2) matches the inner cavity size of the outer shell (1).

3. The pull-out injection molding box for a resistance strain gauge according to claim 1, characterized in that: The two ends of the limiting plate (3) are fixed on the lower surface of the top plate (11).

4. The pull-out injection molding box for a resistance strain gauge according to claim 1, characterized in that: The limiting plate (3) and the outer shell (1) are integrally injection-molded using PVC material.

5. The pull-out injection molding box for a resistance strain gauge according to claim 1, characterized in that: The lower surface of the box cover (22) is provided with a boss (222) matching the opening of the box body (21), and the boss (222) is clamped in the opening of the box body (21).

6. The pull-out injection molding box for a resistance strain gauge according to claim 5, characterized in that: A convex ridge (223) is provided on the lower surface of the boss (222).

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