A patch sensor and its packaging shell

Abstract

The present invention provides a patch type sensor and its packaging tube shell, which belongs to the field of patch type sensor technology. The packaging tube shell includes a plastic body and a metal shielding cover. The top of the side wall of the plastic body is integrally formed with a mounting step for fixing the filter. The side of the metal shielding cover is integrally formed with a raised structure. The top surface of the raised structure, the top surface of the metal shielding cover, and the top surface of the mounting step are flush. The raised structure forms a positioning groove with an open top, which is used to be inserted and matched with the first positioning column in the injection mold to position the metal shielding cover during injection molding. The present invention improves the structure of the metal shielding cover, which not only can position the metal shielding cover during injection molding, limit the freedom of movement of the metal shielding cover, reduce the deformation and dislocation of the metal shielding cover under the high-intensity pressure impact of the plastic, and improve the product qualification rate, but also the metal shielding cover has no gaps in the inner and outer directions and is directly connected to the filter, which greatly improves the shielding effect.

Description

Technical Field

[0001] The invention relates to a patch type sensor and a packaging tube shell thereof, belonging to the technical field of patch type sensors. Background Art

[0002] Surface mount technology (SMT) involves attaching and soldering surface mount components to designated locations on a printed circuit board (PCB). This eliminates the need for drilling holes in the PCB. In recent years, SMD sensors have gained widespread adoption in the sensor industry due to their compact size and ease of mechanized processing.

[0003] For example, Chinese invention patent application publication number CN113091921A discloses a package for a patch sensor and a patch sensor using the package. The package comprises a plastic body, a metal shield, and a plurality of first and second conductive leads. Two support platforms and a circle of steps are integrally injection-molded into the plastic body. The two support platforms mate with the second conductive leads, and the top surface of the steps is lower than the top surface of the plastic body, serving as adhesive for securing the filter. The metal shield is injection-molded into the sidewalls of the plastic body to shield internal components from external interference. Furthermore, the metal shield includes two L-shaped shielding plates, each injection-molded into the four sidewalls of the plastic body. Two shield solder pins are located at the bottom of one side of each shield. These solder pins protrude from the outer wall of the plastic body to facilitate connection to other components, and the bottom surface of the shield solder pins is flush with the bottom surface of the plastic body. The packaging tube shell eliminates the steps of separately installing the support platform, the shielding cover, and the second conductive lead during assembly, thereby simplifying the production and assembly process.

[0004] However, in actual production, due to the small size of the patch sensor, the metal shield is made of a very thin metal shielding plate. This easily deforms and misaligns under the high pressure of the plastic during injection molding. As a result, the shield in the cured package tube shell fails to meet design and usage requirements. Furthermore, the two shielding sheets are completely located inside the plastic body, with a gap between adjacent ends. This prevents the shield from completely enclosing the internal components, thus compromising the shielding effectiveness. Summary of the Invention

[0005] The object of the present invention is to provide a package tube shell for a patch sensor to solve the problem that the metal shielding cover is easily deformed and dislocated under the high-intensity pressure impact of the plastic during the injection molding of the existing package tube shell; the object of the present invention is also to provide a patch sensor to solve the above-mentioned problem.

[0006] To achieve the above objectives, the package tube shell of the patch sensor in the present invention adopts the following technical solutions:

[0007] A packaging tube shell for a patch sensor includes a shell-shaped plastic body and a metal shielding cover injection-molded and fixed inside the plastic body. The bottom of the metal shielding cover is provided with a shielding cover solder foot exposed outside the plastic body. The top of the side wall of the plastic body is integrally formed with a mounting step for fixing a filter. The top surface of the mounting step is lower than the top surface of the plastic body. A protruding structure that protrudes inward or outward is integrally formed on the side of the metal shielding cover. The top surface of the protruding structure, the top surface of the metal shielding cover, and the top surface of the mounting step are flush. The protruding structure forms a positioning groove with an open top. The positioning groove is used to be inserted and matched with a first positioning column in the injection mold to position the metal shielding cover during injection molding.

[0008] The beneficial effects of the above technical solution are as follows: a raised structure, either protruding inward or outward, is integrally formed on the side of the metal shield. The raised structure forms a positioning groove with an open top. The positioning groove can be inserted and matched with a first positioning post in the injection mold to position the metal shield during injection molding, limit the metal shield's freedom of movement, reduce deformation and dislocation of the metal shield under the high-intensity pressure impact of the plastic, and improve the product qualification rate. At the same time, the top surface of the raised structure, the top surface of the metal shield, and the top surface of the mounting step are all flush, ensuring that the first positioning post inserted into the positioning groove can be smoothly removed, achieving the above-mentioned effect. Moreover, the top surface of the metal shield is exposed, allowing the filter fixed to the mounting step to conduct electricity with the metal shield, achieving a better shielding effect.

[0009] Furthermore, the plastic body is in the shape of a square shell, and the metal shielding cover is composed of two shielding plates, which include a first shielding edge and a second shielding edge arranged vertically as a whole. The first shielding edges and the second shielding edges of the two shielding plates are arranged relative to each other, and the raised structure is arranged on the first shielding edge and / or the second shielding edge of each shielding plate.

[0010] The beneficial effects of the above technical solution are: facilitating the processing and manufacturing of the metal shielding cover, and also facilitating the injection molding of the packaging tube shell.

[0011] Furthermore, the protruding structure is provided on the first shielding edge, and the bottom of the first shielding edge is also provided with the shielding cover solder foot.

[0012] The beneficial effect of the above technical solution is that the protruding structure and the shielding cover solder feet can be processed on the first shielding edge at the same time, which facilitates processing.

[0013] Furthermore, the solder legs of the shielding cover are arranged at positions corresponding to the raised structures.

[0014] The beneficial effects of the above technical solution are: compact structure, ability to provide more protruding structures, and ensuring positioning effect.

[0015] Furthermore, the solder legs of the shielding cover are folded outwards, and the protruding structure is protruded inwards.

[0016] The beneficial effect of the above technical solution is that the deformation directions are opposite, which not only facilitates the formation of the solder legs and the protruding structure of the shielding cover, but also improves the structural strength of the shielding sheet.

[0017] Furthermore, the second shielding edge is Z-shaped, and the second shielding edge includes a first connecting segment vertically connected to the end of the first shielding edge, a second connecting segment vertically connected to the first connecting segment, and a third connecting segment vertically connected to the second connecting segment. The shielding plate also includes a third shielding edge vertically connected to the end of the first shielding edge away from the second shielding edge; the third shielding edge of one shielding plate is arranged parallel to the third connecting segment of another shielding plate and has an overlapping part in the inner and outer directions.

[0018] The beneficial effect of the above technical solution is that: by setting the second shielding edge in a Z shape, including three connecting segments, and at the same time making the shielding piece include a third shielding edge vertically connected to the first shielding edge, the third shielding edge of one shielding piece is arranged parallel and spaced apart from the third connecting segment of another shielding piece and has an overlapping part in the inner and outer directions, so that there is no gap between adjacent shielding pieces in the inner and outer directions, so that the metal shielding cover can completely surround the internal components, thereby improving the shielding effect.

[0019] Furthermore, the second connecting section extends inward, and the third shielding edge of one shielding sheet is located on the outside of the third connecting section of the other shielding sheet. The outer side surface of the third connecting section is used to cooperate with the second positioning column in the injection mold to limit the position of the third connecting section. A positioning socket is formed on the top surface of the mounting step at a position corresponding to the second positioning column.

[0020] The beneficial effect of the above technical solution is that: by extending the second connecting section inward, the third shielding edge of one shielding sheet is located on the outside of the third connecting section of the other shielding sheet, and then the outer side surface of the third connecting section is used to cooperate with the second positioning column in the injection mold to limit the movement freedom of the third connecting section, limit the position of the third connecting section, and further reduce the deformation and dislocation of the metal shielding cover under the high-intensity pressure impact of the plastic.

[0021] Furthermore, the length of the third connecting section is greater than the lengths of the first connecting section and the third shielding edge, and one third connecting section is used to engage with the two second positioning posts for blocking.

[0022] The beneficial effect of the above technical solution is that the third connecting section is relatively long and can cooperate with the two second positioning posts to further improve the limiting effect.

[0023] Furthermore, the shielding cover solder legs are arranged in pairs, and a connecting piece is connected between the pair of shielding cover solder legs.

[0024] The beneficial effect of the above technical solution is that the metal shielding cover forms a sealed environment to ensure the shielding effect.

[0025] To achieve the above objectives, the patch sensor in the present invention adopts the following technical solutions:

[0026] A patch sensor comprises a packaging tube shell and a filter mounted on the packaging tube shell, the packaging tube shell comprising a shell-shaped plastic body and a metal shielding cover fixed in the plastic body by injection molding, the bottom of the metal shielding cover is provided with a shielding cover solder foot exposed outside the plastic body, the top of the side wall of the plastic body is integrally formed with a mounting step for fixing the filter, the top surface of the mounting step is lower than the top surface of the plastic body, the side edge of the metal shielding cover is integrally formed with a protruding structure that protrudes inward or outward, the top surface of the protruding structure, the top surface of the metal shielding cover, and the top surface of the mounting step are flush, the protruding structure forms a positioning groove with an open top, the positioning groove is used to be inserted and matched with a first positioning column in the injection mold to position the metal shielding cover during injection molding.

[0027] The beneficial effects of the above technical solution are as follows: a raised structure, either protruding inward or outward, is integrally formed on the side of the metal shield. The raised structure forms a positioning groove with an open top. The positioning groove can be inserted and matched with a first positioning post in the injection mold to position the metal shield during injection molding, limit the metal shield's freedom of movement, reduce deformation and dislocation of the metal shield under the high-intensity pressure impact of the plastic, and improve the product qualification rate. At the same time, the top surface of the raised structure, the top surface of the metal shield, and the top surface of the mounting step are all flush, ensuring that the first positioning post inserted into the positioning groove can be smoothly removed, achieving the above-mentioned effect. Moreover, the top surface of the metal shield is exposed, allowing the filter fixed to the mounting step to conduct electricity with the metal shield, achieving a better shielding effect.

[0028] Furthermore, the plastic body is in the shape of a square shell, and the metal shielding cover is composed of two shielding plates, which include a first shielding edge and a second shielding edge arranged vertically as a whole. The first shielding edges and the second shielding edges of the two shielding plates are arranged relative to each other, and the raised structure is arranged on the first shielding edge and / or the second shielding edge of each shielding plate.

[0029] The beneficial effects of the above technical solution are: facilitating the processing and manufacturing of the metal shielding cover, and also facilitating the injection molding of the packaging tube shell.

[0030] Furthermore, the protruding structure is provided on the first shielding edge, and the bottom of the first shielding edge is also provided with the shielding cover solder foot.

[0031] The beneficial effect of the above technical solution is that the protruding structure and the shielding cover solder feet can be processed on the first shielding edge at the same time, which facilitates processing.

[0032] Furthermore, the solder legs of the shielding cover are arranged at positions corresponding to the raised structures.

[0033] The beneficial effects of the above technical solution are: compact structure, ability to provide more protruding structures, and ensuring positioning effect.

[0034] Furthermore, the solder legs of the shielding cover are folded outwards, and the protruding structure is protruded inwards.

[0035] The beneficial effect of the above technical solution is that the deformation directions are opposite, which not only facilitates the formation of the solder legs and the protruding structure of the shielding cover, but also improves the structural strength of the shielding sheet.

[0036] Furthermore, the second shielding edge is Z-shaped, and the second shielding edge includes a first connecting segment vertically connected to the end of the first shielding edge, a second connecting segment vertically connected to the first connecting segment, and a third connecting segment vertically connected to the second connecting segment. The shielding plate also includes a third shielding edge vertically connected to the end of the first shielding edge away from the second shielding edge; the third shielding edge of one shielding plate is arranged parallel to the third connecting segment of another shielding plate and has an overlapping part in the inner and outer directions.

[0037] The beneficial effect of the above technical solution is that: by setting the second shielding edge in a Z shape, including three connecting segments, and at the same time making the shielding piece include a third shielding edge vertically connected to the first shielding edge, the third shielding edge of one shielding piece is arranged parallel and spaced apart from the third connecting segment of another shielding piece and has an overlapping part in the inner and outer directions, so that there is no gap between adjacent shielding pieces in the inner and outer directions, so that the metal shielding cover can completely surround the internal components, thereby improving the shielding effect.

[0038] Furthermore, the second connecting section extends inward, and the third shielding edge of one shielding sheet is located on the outside of the third connecting section of the other shielding sheet. The outer side surface of the third connecting section is used to cooperate with the second positioning column in the injection mold to limit the position of the third connecting section. A positioning socket is formed on the top surface of the mounting step at a position corresponding to the second positioning column.

[0039] The beneficial effect of the above technical solution is that: by extending the second connecting section inward, the third shielding edge of one shielding sheet is located on the outside of the third connecting section of the other shielding sheet, and then the outer side surface of the third connecting section is used to cooperate with the second positioning column in the injection mold to limit the movement freedom of the third connecting section, limit the position of the third connecting section, and further reduce the deformation and dislocation of the metal shielding cover under the high-intensity pressure impact of the plastic.

[0040] Furthermore, the length of the third connecting section is greater than the lengths of the first connecting section and the third shielding edge, and one third connecting section is used to engage with the two second positioning posts for blocking.

[0041] The beneficial effect of the above technical solution is that the third connecting section is relatively long and can cooperate with the two second positioning posts to further improve the limiting effect.

[0042] Furthermore, the shielding cover solder legs are arranged in pairs, and a connecting piece is connected between the pair of shielding cover solder legs.

[0043] The beneficial effect of the above technical solution is that the metal shielding cover forms a sealed environment to ensure the shielding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A three-dimensional diagram of the package tube shell of the patch sensor of the present invention;

[0045] Figure 2 A top view of the package tube shell of the patch sensor of the present invention;

[0046] Figure 3 A top view of the metal shield, the first conductive lead, and the second conductive lead in the package tube shell of the patch sensor of the present invention;

[0047] Figure 4 A top view of the metal shield in the package tube shell of the patch sensor of the present invention;

[0048] Figure 5 It is a three-dimensional diagram of the metal shielding cover in the package tube shell of the patch sensor of the present invention.

[0049] In the figure: 1. First conductive lead; 2. Second conductive lead; 3. Shielding plate; 31. First shielding edge; 311. Protruding structure; 312. Positioning groove; 313. Shielding cover solder foot; 314. Connecting plate; 32. Second shielding edge; 321. First connecting section; 322. Second connecting section; 323. Third connecting section; 33. Third shielding edge; 4. Plastic body; 41. Support platform; 42. Mounting step; 43. Positioning socket. DETAILED DESCRIPTION

[0050] In order to make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present invention and are not intended to limit the present invention. That is, the embodiments described herein are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein may be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely intended to represent selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0052] It should be noted that relational terms such as "first" and "second" that may appear are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, terms such as "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article or device. In the absence of further limitations, an element defined by a sentence such as "including a..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0053] The features and performance of the present invention are further described in detail below with reference to the embodiments.

[0054] An embodiment of the package tube shell of the patch sensor in the present invention (hereinafter referred to as the package tube shell):

[0055] like Figure 1 and Figure 2 As shown, the package includes a plastic body 4, a metal shield, a first conductive lead 1, and a second conductive lead 2. The plastic body 4 is square, forming a housing chamber with an upward opening. Two support platforms 41 are integrally injection-molded within the housing chamber. The metal shield, first conductive lead 1, and second conductive lead 2 are injection-molded and fixed to the plastic body 4. A mounting step 42 for securing the optical filter is integrally molded at the top of the sidewall of the plastic body 4. The top surface of the mounting step 42 is lower than the top surface of the plastic body 4.

[0056] The specific structure and arrangement of the first conductive lead 1 and the second conductive lead 2 are the same as those disclosed in the Chinese invention patent application with application publication number CN113091921A. Figure 1 、 Figure 2 and Figure 3As shown, there are six first conductive leads 1, four of which are arranged in a row on one side of the plastic body 4. Each first conductive lead 1 includes a horizontal section and a lead-out section. The back of the lead-out section is flush with the back of the plastic body 4. The lead-out section includes a lead solder foot that is exposed from the outer wall of the plastic body 4. The lead solder foot constitutes the first end of the first conductive lead 1. A portion of the top surface of the horizontal section is exposed from the bottom surface of the accommodation chamber and is used to connect to the signal processing circuit, forming the second end of the first conductive lead 1.

[0057] Two second conductive leads 2 are arranged in a row with the remaining two first conductive leads 1 on the other side of the plastic body 4. The second conductive leads 2 include a middle section, a first connecting section higher than the middle section, and a second connecting section. The top surface of the first connecting section partially exposes the bottom surface of the storage chamber, forming a first exposed portion for connection to the signal processing circuit. The top and side surfaces of the second connecting section are flush with the top and side surfaces of the support platform 41, respectively, forming a second exposed portion for connection to the sensitive component.

[0058] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the metal shield is formed by two identical shielding sheets 3, each injection-molded and fixed to the four sidewalls of a plastic body 4. These shielding sheets 3 shield the internal components from external interference. The present invention's package differs from the prior art in the structure of the shielding sheets 3 and the partial structure of the plastic body 4.

[0059] Specifically, the shielding sheet 3 includes a first shielding edge 31 and a second shielding edge 32 arranged vertically as a whole. The first shielding edges 31 and the second shielding edges 32 of the two shielding sheets 3 are arranged opposite each other. Two inwardly protruding protrusions 311 are integrally formed on the first shielding edge 31 of each shielding sheet 3. The protrusions 311 form positioning grooves 312 with open tops. The positioning grooves 312 are used to engage with the first positioning posts in the injection mold to position the shielding sheet 3 during injection molding, limit the freedom of movement of the shielding sheet 3, reduce deformation and dislocation of the shielding sheet 3 under high-intensity pressure impact of the plastic, and improve the product qualification rate.

[0060] like Figure 1 and Figure 2 As shown, the top surface of the raised structure 311, the top surfaces of the two shielding sheets 3, and the top surface of the mounting step 42 are flush, ensuring that the first positioning column plugged into the positioning groove 312 can be smoothly removed to achieve the above-mentioned effect, and the top surface of the metal shielding cover is exposed, so that the filter (not shown in the figure) fixed on the mounting step 42 can be connected to the metal shielding cover, thereby achieving a better shielding effect.

[0061] like Figures 1 to 5As shown, the bottom of the first shielding edge 31 of each shielding sheet 3 is also provided with a pair of shielding cover solder feet 313 exposed outside the plastic body 4, facilitating connection with other components. Furthermore, the shielding cover solder feet 313 are positioned to correspond vertically with the raised structure 311, and the shielding cover solder feet 313 are folded outward, while the raised structure 311 is raised inward. This compact structure facilitates the simultaneous processing of the raised structure 311 and the shielding cover solder feet 313 on the first shielding edge 31. Furthermore, the two deform in opposite directions, facilitating the formation of the shielding cover solder feet 313 and the raised structure 311, ensuring the thickness of the sidewall of the plastic body 4, and also improving the structural strength of the shielding sheet 3 and the injection molding fixation effect of the shielding sheet 3.

[0062] like Figure 3 、 Figure 4 and Figure 5 As shown, the second shielding edge 32 of each shielding sheet 3 is Z-shaped. The second shielding edge 32 includes a first connecting segment 321 perpendicularly connected to the end of the first shielding edge 31, a second connecting segment 322 perpendicularly connected to the first connecting segment 321, and a third connecting segment 323 perpendicularly connected to the second connecting segment 322. The second connecting segment 322 extends inward. Each shielding sheet 3 also includes a third shielding edge 33 perpendicularly connected to the end of the first shielding edge 31 away from the second shielding edge 32. The third shielding edge 33 of one shielding sheet 3 is located outside the third connecting segment 323 of another shielding sheet 3. Furthermore, the third shielding edge 33 and the third connecting segment 323 are arranged parallel and spaced apart, overlapping in the inner-outer direction. This eliminates gaps between adjacent shielding sheets 3 in the inner-outer direction, allowing the metal shield to completely enclose the internal components and enhance shielding effectiveness. Furthermore, the compact layout of the third shielding edge 33 and the second shielding edge 32 ensures the sidewall thickness of the plastic body 4 without oversizing the housing chamber or the plastic body 4, thus meeting product requirements.

[0063] In addition, a connecting piece 314 is connected between a pair of shielding cover solder legs 313, which blocks the gap between the pair of shielding cover solder legs 313 in the inward and outward directions. This not only allows the metal shielding cover to form a sealed environment to ensure the shielding effect, but also improves the structural strength of the shielding piece 3 and improves the injection molding fixing effect of the shielding piece 3.

[0064] In addition, the length of the third connecting section 323 is greater than the length of the first connecting section 321 and the third shielding edge 33. The outer side surface of the third connecting section 323 is used to cooperate with the two second positioning posts in the injection mold to limit the freedom of movement of the third connecting section 323 and limit the position of the third connecting section 323, further reducing the deformation and dislocation of the metal shield under the high-intensity pressure impact of the plastic. Figure 1 and Figure 2As shown, after injection molding, a positioning socket 43 is formed on the top surface of the mounting step 42 at a position corresponding to the second positioning column. The positioning socket 43 and the positioning groove 312 are later filled with sealant when the filter is bonded and fixed.

[0065] The present invention improves the structure of the metal shielding cover, which not only can position the metal shielding cover during injection molding, limit the freedom of movement of the metal shielding cover, reduce the deformation and dislocation of the metal shielding cover under the high-intensity pressure impact of the plastic, and improve the product qualification rate, but also the metal shielding cover has no gaps in the internal and external directions, has sufficient height to completely surround the internal components, and is directly connected to the filter, thereby greatly improving the shielding effect of the metal shielding cover.

[0066] In other embodiments of the package tube shell of the patch sensor: according to actual needs, the number of pairs of shielding cover solder legs can be adjusted, and a connecting piece may not be provided between a pair of shielding cover solder legs. Of course, the shielding cover solder legs may not be provided in pairs.

[0067] In other embodiments of the package tube shell of the patch sensor: no matter whether the length of the third connecting segment is greater than the length of the first connecting segment and the third shielding edge, one third connecting segment can be stopped and matched with two second positioning columns, or only with one second positioning column.

[0068] In other embodiments of the packaging tube shell of the patch sensor: the second connecting section can extend outward, and at this time the third shielding edge of one shielding sheet is located on the inner side of the third connecting section of the other shielding sheet. At this time, the outer side surface of the third connecting section can be engaged with the second positioning column. Of course, the mold may not include the second positioning column, and the outer side surface of the third connecting section does not engage with any structural stop. At this time, no positioning socket is formed on the top surface of the installation step.

[0069] In other embodiments of the package tube shell of the patch sensor: the second shielding edge is not Z-shaped, but "I"-shaped, directly parallel to and spaced apart from the third shielding edge, and located on the inner or outer side of the third shielding edge, with or without overlapping parts in the inner and outer directions; of course, it can also be flush with the third shielding edge, in which case there is a gap between it and the third shielding edge; of course, the shielding sheet may not include the third shielding edge, in which case the shielding sheet as a whole is L-shaped, the same as the existing structure.

[0070] In other embodiments of the package tube shell of the patch sensor: when the solder legs of the shielding cover are folded outward, the protruding structure may also be protruded outward.

[0071] In other embodiments of the package tube shell of the patch sensor, the arrangement position of the solder legs of the shielding cover and the protruding structure may also be staggered up and down.

[0072] In other embodiments of the package tube shell of the patch sensor: the first shielding edge and the second shielding edge can both be provided with a protruding structure, or the protruding structure can be provided only on the second shielding edge. Of course, the shielding cover solder foot can also be provided only on the second shielding edge.

[0073] In other embodiments of the package tube shell of the patch sensor: according to actual needs, the plastic body can also be a round shell, and in this case the metal shielding cover is composed of two semicircular shielding pieces, or a shielding piece that is close to a full circle.

[0074] An embodiment of the patch sensor in the present invention is as follows: the patch sensor includes a packaging tube shell and a filter mounted on the packaging tube shell. The specific structure of the packaging tube shell is the same as that of the patch sensor in the above embodiment and will not be repeated here.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be based on the claims. Any equivalent structural changes made using the description and drawings of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A package tube package for a patch sensor, comprising a shell-shaped plastic body and a metal shield fixed by injection molding within the plastic body. The bottom of the metal shield is provided with shield solder pins exposed outside the plastic body. The top of the side wall of the plastic body is integrally formed with a mounting step for fixing a filter. The top surface of the mounting step is lower than the top surface of the plastic body. The following characteristics are characterized: A raised structure protruding inward or outward is integrally formed on the side of the metal shielding cover. The top surface of the raised structure, the top surface of the metal shielding cover, and the top surface of the mounting step are flush. The raised structure forms a positioning groove with an open top. The positioning groove is used to engage with a first positioning column in the injection mold to position the metal shielding cover during injection molding. The metal shielding cover is injection-molded and fixed between the side wall of the plastic body and the mounting step. The plastic body is in the shape of a square shell. The metal shielding cover is composed of two shielding plates. The shielding plates include a first shielding edge and a second shielding edge arranged vertically as a whole. The first shielding edges and the second shielding edges of the two shielding plates are arranged opposite to each other. The raised structure is provided on the first shielding edge. The second shielding edge is Z-shaped. The second shielding edge includes a first connecting section perpendicularly connected to the end of the first shielding edge, a second connecting section perpendicularly connected to the first connecting section, and a third connecting section perpendicularly connected to the second connecting section. The second connecting section extends inward, and the outer side surface of the corresponding third connecting section is used to engage with the second positioning column in the injection mold to limit the position of the third connecting section.

2. The package tube shell of the patch sensor according to claim 1, characterized in that: The bottom of the first shielding edge is also provided with the shielding cover solder foot.

3. The package tube shell of the patch sensor according to claim 2, characterized in that: The setting position of the shield cover solder foot corresponds to the upper and lower parts of the protrusion structure.

4. The package tube shell of the patch sensor according to claim 2 or 3, characterized in that: The solder legs of the shielding cover are folded outward, and the raised structure is raised inward.

5. The package tube shell of the patch sensor according to any one of claims 1 to 3, characterized in that: The shielding piece also includes a third shielding edge vertically connected to the end of the first shielding edge away from the second shielding edge; the third shielding edge of one shielding piece is arranged parallel and spaced apart from the third connecting section of another shielding piece and has an overlapping portion in the inner and outer directions.

6. The package tube shell of the patch sensor according to claim 5, characterized in that: The third shielding edge of one shielding sheet is located outside the third connecting section of the other shielding sheet, and a positioning socket is formed on the top surface of the installation step at a position corresponding to the second positioning column.

7. The package tube shell of the patch sensor according to claim 6, characterized in that: The length of the third connecting section is greater than the length of the first connecting section and the third shielding edge. One third connecting section is used for blocking and cooperating with the two second positioning posts.

8. The package tube package of the patch sensor according to any one of claims 1 to 3, characterized in that: The shielding cover solder legs are arranged in pairs, and a connecting piece is connected between the pair of shielding cover solder legs.

9. A patch sensor comprising a package and a filter mounted on the package, characterized in that: The packaging tube shell is the same as the packaging tube shell of the patch sensor according to any one of claims 1 to 8.

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