Glue injection structure, glue pouring box upper cover and glue pouring box

Abstract

The utility model relates to the technical field of glue filling boxes, and discloses a glue filling structure, a glue filling box upper cover and a glue filling box, the glue filling structure comprises a bottom plate integrated with a glue filling box cover plate, a glue filling hole penetrating through the bottom plate and at least one layer of enclosing wall structure surrounding the periphery of the glue filling hole and arranged on the top surface of the bottom plate, and the height of an enclosing wall is higher than that of the glue filling hole. The number of the enclosing wall structures is not less than two, and the heights of the enclosing wall structures are gradually increased from inside to outside with the glue pouring hole as the center. And the glue injection structure is arranged on a main body of the glue filling box upper cover. The glue filling box comprises the glue filling box upper cover and the glue filling box lower box body, and the glue filling box upper cover and the glue filling box lower box body are combined in a covering mode to form an inner cavity used for installing electronic components and filling sealant. The glue injection structure is simple, glue injection is convenient, and the sealing grade of the applied glue injection box and the packaging efficiency of the applied product shell with high dustproof and waterproof performance are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of glue filling boxes, in particular to a glue injection structure, an upper cover of a glue filling box and a glue filling box. Background Art

[0002] At present, the sealing and protection structures of product shells with high dust and water resistance on the market mainly adopt two forms: mechanical sealing and glue filling sealing. However, the sealing and protection reliability of products with high dust and water resistance (such as IP68) is low, and they cannot be soaked in water for a long time. Their waterproof level reaches IPX8-I of the group standard T / CMA SB 058-2021 of the China Metrology Association.

[0003] The mechanical sealing structure mainly relies on a rubber sealing gasket for sealing. During the use of the product, the following problems exist: First, the tolerances and deformations in the sealing part structure will cause uneven compression, resulting in sealing failure; Second, the pressure difference effect caused by temperature changes makes the pressure inside and outside the shell inconsistent, and water or water vapor entering the shell will cause sealing failure. The glue filling sealing mainly relies on two-component glue for sealing. During the use of the product, the following problems exist: On the one hand, it is easy to generate gaps between the glue and the shell, and water enters the interior along the gaps, resulting in sealing failure; On the other hand, the glue filling process is cumbersome. It is often necessary to transfer the shell to the glue filling room, first turn the shell over for glue filling, and wait for more than 24 hours for the glue to dry. Then, it is put into the production line for shell assembly and the assembly of other components. Therefore, the glue filling process is the bottleneck of the entire product production process, greatly affecting the efficiency of the entire production line.

[0004] Therefore, the prior art still needs to be further developed. Content of the Utility Model

[0005] In view of the above technical problems, the utility model provides a glue injection structure, an upper cover of a glue filling box and a glue filling box. The glue injection structure is simple and the glue filling is convenient, greatly improving the sealing level of the applied glue filling box and the encapsulation efficiency of the product shell with high dust and water resistance.

[0006] In view of the above problems, the utility model provides the following technical solutions:

[0007] In a first aspect, the present application provides a glue injection structure used in a glue filling box, which includes: a bottom plate integrally provided with a glue filling box cover plate, a glue injection hole penetrating the bottom plate, and at least one layer of enclosure structure provided on the top surface of the bottom plate around the outer periphery of the glue injection hole. The height of the enclosure is higher than the height of the glue injection hole.

[0008] Optionally, in the glue injection structure used in the glue filling box, the number of the enclosure structures is not less than two, and the height of the enclosure structure gradually increases from the inside to the outside with the glue injection hole as the center.

[0009] Optionally, in the glue injection structure used in the glue injection box, the multi-layer enclosure structure is a concentric annular structure centered on the glue injection hole.

[0010] Optionally, in the glue injection structure used in the glue injection box, the bottom surface of the bottom plate is recessed inward to form a groove.

[0011] In a second aspect, the present application also provides a cover for a glue injection box, and the aforementioned glue injection structure is provided on the cover body thereof.

[0012] Optionally, in the cover for the glue injection box, an exhaust structure is further provided at a position on the cover body away from the glue injection structure. The exhaust structure is the same as the glue injection structure, and the number of enclosures of the exhaust structure is the same as or different from the number of enclosures of the glue injection structure.

[0013] In a third aspect, the present application also provides a glue injection box, which includes the aforementioned cover for the glue injection box and a lower box body. The cover for the glue injection box and the lower box body are covered to form an inner cavity for installing electronic components and filling and sealing glue.

[0014] Optionally, in the glue injection box, the cover for the glue injection box and the lower box body are screwed and / or snap-fitted. The cover for the glue injection box is transparent; a wire passing hole is provided on the bottom surface of the lower box body, and a seal for the wire to pass through is installed on the wire passing hole.

[0015] Optionally, in the glue injection box, a positioning protrusion that extends vertically downward from the bottom surface of the cover for the glue injection box and is clamped inside the inner edge of the top side wall of the lower box body is provided. A first card slot for clamping with the top of the lower box body is provided on the outside of the cover for the glue injection box adjacent to the positioning protrusion.

[0016] Optionally, in the glue injection box, the depth of the first card slot is greater than the height of the positioning protrusion; mounting holes are provided on the outer side edge of the cover for the glue injection box.

[0017] The glue injection structure, the cover for the glue injection box and the glue injection box provided by the present utility model have the following beneficial effects:

[0018] 1. The design of the glue injection structure is simple and ingenious. The setting of the multi-layer enclosure structure outside the glue injection hole not only greatly expands the bonding surface between the sealant and the housing, but also extends the path for moisture in the air to enter the glue injection hole from the outside, and sets up multi-layer enclosure-type obstacles for this path. External water vapor can only enter the glue injection hole under a large siphon force, which can effectively isolate external water vapor and improve the sealing and protection reliability of the glue injection box. Grooves are provided inside the glue injection port and the exhaust port, which is beneficial to the complete discharge of the gas inside the housing and effectively avoids the phenomenon of trapped air.

[0019] 2. The glue injection structure has a wide range of applications and can be applied to the glue injection boxes of various products to play a highly reliable sealing and protection function. Its waterproof level reaches the IPX8-III level of the group standard T / CMA SB058-2021 of the China Metrology Association. The applied housing can achieve reliable sealing even after being soaked in water for more than 30 days under the condition of temperature change.

[0020] 3. Through the reasonable design of the glue injection port and the exhaust port, the glue injection box greatly optimizes and improves the convenience of the glue injection process, realizes the scheme of whole-machine glue injection after the assembly of each component, improves the glue injection and assembly efficiency, and can be used in the waterproof design of various meter housings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic perspective view of the glue injection box;

[0022] Figure 2 is a longitudinal sectional view of the glue injection box;

[0023] Figure 3 is Figure 2 an enlarged view of the structure at A of

[0024] Figure 4 is an exploded view of the structure of the glue injection box;

[0025] Among them, the reference numerals are explained as follows:

[0026] Glue injection port 1, bottom plate 11, glue injection hole 12, enclosure structure 13, groove 14, exhaust structure 2, glue injection box upper cover 3, positioning protrusion 31, lower box body 4, inner cavity 41, seal 42, first card slot 32. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present invention.

[0028] It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The orientation or positional relationship indicated by the terms "vertical", "horizontal", "left", "right", "up", "down", "inside", "outside", "bottom", etc. used in this specification is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not used to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items. In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] Embodiment 1

[0030] As Figure 3 shown, this embodiment provides a glue injection structure used in a glue injection box, which includes: a bottom plate 11 integrally provided with the glue injection box cover plate, a glue injection hole 12 penetrating the bottom plate, and at least one layer of enclosure structure 13 provided on the top surface of the bottom plate around the outer periphery of the glue injection hole, and the height of the enclosure is higher than the height of the glue injection hole.

[0031] The setting of the above enclosure structure significantly expands the contact surface between the sealant at the glue injection port and the housing, expands the bonding surface between the sealant and the housing, and effectively prevents the separation between the two; in addition, the setting of the enclosure structure extends the path for moisture in the air to enter the glue injection hole from the outside, and a large siphon force is required to enter the glue injection hole. External water vapor needs to "climb over" multiple enclosures, which can effectively isolate external water vapor and improve the sealing and protection reliability of this structure. Therefore, the above enclosure structure greatly improves the sealing performance at the glue injection port.

[0032] Preferably, the number of the enclosure structures is not less than two, and the height of the enclosure structures gradually increases from the inside out with the glue injection hole as the center. The higher the enclosure height, the more beneficial it is for protection. The arrangement that the external enclosure structure is higher than the internal enclosure structure enables the moisture in the air to first contact the outermost and highest enclosure structure. The internal enclosure structure is completely immersed in the sealant, so that the external water vapor must "climb over" multiple enclosure structures step by step from the outside to the inside to enter the glue injection port.

[0033] The more layers the enclosure structure has, the more obstacles there are for the moisture in the air to enter the glue injection hole, the more difficult it is for the potting adhesive to separate from the contacted housing part, and the more excellent the sealing performance of the glue injection structure is.

[0034] In this embodiment, the enclosure structure in the glue injection structure is two or three layers. In other embodiments, the number of layers of the enclosure structure is more.

[0035] As Figure 1 shown, in this embodiment, the multi-layer enclosure structure is a concentric annular structure centered on the glue injection hole 12.

[0036] During the process of re-injecting glue into the glue injection box, when the air in the glue injection box is not discharged from the exhaust hole in time, some bubbles will accumulate on the bottom surface of the glue injection box cover. And due to the error of the existing manufacturing process, the bottom surface of the glue injection box cover is also not flat, which is not conducive to the complete discharge of bubbles, resulting in some bubbles accumulating on the bottom surface of the glue injection box cover.

[0037] In view of the above problems, the following improvements are made: The bottom surface of the bottom plate 11 around the glue injection hole is recessed inward to form a groove 14. After such a setting, the unexhausted air in the glue injection box will accumulate below the position where the glue injection hole is located, which is conducive to the complete discharge of the gas inside the glue injection box and effectively avoids the phenomenon of air entrapment.

[0038] In the second aspect, this embodiment also provides a top cover of the glue injection box, and the aforementioned glue injection structure 1 is arranged on the top cover main body.

[0039] In the top cover of the glue injection box, an exhaust structure 2 is further arranged at a position on the top cover main body far from the glue injection structure. The exhaust structure is the same as the glue injection port 1 structure, and the number of enclosures of the exhaust structure is the same as or different from the number of enclosures of the glue injection structure.

[0040] As Figure 1 shown, in this embodiment, the enclosure of the glue injection structure 1 is two layers, and the number of enclosures of the exhaust structure is three layers. In other embodiments, the number of enclosures of the glue injection structure and the exhaust structure can be reasonably adjusted, not limited to this embodiment.

[0041] In the third aspect, as Figures 1 to 4As shown in the figure, this embodiment provides a potting box, which is mainly assembled by the aforementioned upper cover 3 and lower box body 4 of the potting box. The upper cover and the lower box body of the potting box are closed to form an inner cavity 41 for installing electronic components and filling and sealing glue.

[0042] In this embodiment, the upper cover 3 and the lower box body 4 of the potting box are screwed and clamped. In other embodiments, the upper cover 3 and the lower box body 4 of the potting box are fixedly connected in other ways.

[0043] Optionally, the upper cover of the potting box is transparent. For example, the potting box is made of transparent glass or transparent plastic. This setting not only facilitates the positioning and installation of components such as liquid crystal displays and antennas in the potting box, but also facilitates observing the potting situation in the potting box.

[0044] As Figure 2 shown in the figure, the bottom surface of the lower box body is provided with a plurality of wire passing holes, and a seal 42 for wires to pass through is installed on the wire passing holes. Wires such as wires of various sensors and power supply wires can respectively pass through the holes in the seal and be connected to the circuit board (or other electronic components) inside the potting glue.

[0045] As Figure 2 and 3 shown in the figure, a positioning protrusion 31 that extends vertically downward from the bottom surface of the upper cover 3 of the potting box and is clamped inside the inner edge of the top side wall of the lower box body is provided. A first card slot 32 that is clamped with the top of the lower box body is provided on the outer side of the upper cover of the potting box adjacent to the positioning protrusion. In this embodiment, the positioning protrusion is a positioning ring. The depth of the first card slot is greater than the height of the positioning protrusion.

[0046] The outer side of the upper cover 3 of the potting box is provided with mounting holes. The fastener realizes the fixed connection of the potting box and other mating structures through cooperation with the mounting holes.

[0047] The structure of the potting box is simple, and the sealing performance is significantly improved, with a high-reliability IPX8-III sealing protection level.

[0048] The settings of the potting port and the exhaust port of the above-mentioned potting box not only improve the sealing performance, but also improve the efficiency of the assembly and potting process flows. The potting operation can be realized after the whole machine assembly is completed, effectively solving the bottleneck problems of low efficiency and long cycle caused by long transfer and drying times in the existing potting process during production, optimizing the production process and improving the production efficiency.

[0049] In the existing traditional potting process, the potting box is open. It is necessary to first transfer the housing to the potting room, turn the open housing over for potting, and wait for about 24 hours for the glue to dry completely after potting. Then, it is put into the production line for housing assembly and the assembly of other components. Therefore, this traditional potting process flow is not only cumbersome and has a long cycle, but also greatly limits the production efficiency of the production line.

[0050] In the solution of this embodiment, the potting box can be assembled first, and then the colloid can be poured into the inner cavity through the potting hole. After 4 to 5 hours, when the colloid in the box stops flowing, it can be sent back to the production line for subsequent processing or the assembly of other structures. Therefore, compared with the existing potting process, the design of the potting box in this application greatly optimizes the production process and significantly improves the production efficiency.

[0051] The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated. It can be understood that for those of ordinary skill in the art, equivalent substitutions or changes can be made according to the technical solutions of the present invention and the concept of the present invention, and all such changes or substitutions should fall within the protection scope of the claims appended to the present invention.

Claims

1. A glue injection structure used in a glue filling box, characterized in that: include: A bottom plate integrally arranged with the glue pouring box cover plate, a glue pouring hole penetrating the bottom plate, and at least one wall structure arranged around the outer periphery of the glue pouring hole on the top surface of the bottom plate, wherein the height of the wall structure is higher than the height of the glue pouring hole.

2. The glue injection structure used in the glue filling box according to claim 1, characterized in that: The number of the wall structure is no less than two layers, and the height of the wall structure gradually increases from the inside to the outside with the glue injection hole as the center.

3. The glue injection structure used in the glue filling box according to claim 2, characterized in that: The multi-layer wall structure is a concentric ring structure with the glue injection hole as the center.

4. The glue injection structure used in a glue filling box according to claim 3, characterized in that: The bottom surface of the bottom plate around the glue injection hole is inwardly recessed to form a groove.

5. A glue filling box cover, characterized in that: The upper cover body is provided with a glue injection structure as described in any one of claims 1 to 4.

6. The glue filling box cover according to claim 5, characterized in that: An exhaust structure is also provided on the upper cover body at a position away from the glue injection structure. The exhaust structure is the same as the glue injection structure, and the number of walls of the exhaust structure is the same as or different from the number of walls of the glue injection structure.

7. A glue filling box, characterized in that: The invention comprises an upper cover and a lower box body of the glue potting box as claimed in claim 5 or 6, wherein the upper cover and the lower box body of the glue potting box are combined to form an inner cavity for installing electronic components and filling sealant.

8. The glue filling box according to claim 7, characterized in that: The upper cover of the glue potting box and the lower box body are screwed and / or clamped, and the upper cover of the glue potting box is transparent; the bottom surface of the lower box body is provided with a threading hole, and a sealing member for the threading of the wire is installed on the threading hole.

9. The glue filling box according to claim 7, characterized in that: A positioning protrusion is vertically extended downward from the bottom surface of the upper cover of the glue potting box and is clamped on the inner edge of the top side wall of the lower box body. A first clamping groove is arranged on the outer side of the upper cover of the glue potting box adjacent to the positioning protrusion and is clamped on the top of the lower box body.

10. The glue filling box according to claim 9, characterized in that: The depth of the first clamping groove is greater than the height of the positioning protrusion; and a mounting hole is arranged on the outer side of the upper cover of the glue potting box.

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