A shield for a high frequency relay and a high frequency relay

Abstract

The application discloses a shielding cover of a high-frequency relay and the high-frequency relay, and the shielding cover comprises a shielding cover body with a box shape with an opening facing downward; the shielding cover body is formed by bending a metal plate piece with a plane shape; the metal plate piece comprises a middle part in a rectangular shape as a top plate of the box shape of the shielding cover body and side edge parts extended outward from four edges of the middle part to be bent into side plates of the box shape of the shielding cover body; a corresponding protruding protruding part is arranged on one side of the inner side of each of two opposite side plates, and the distance between the top ends of the two protruding parts is smaller than the fitting size of the relay body between the two opposite side plates. The application can improve the coplanar precision of the leading-out end after assembly, reduce impedance matching deviation, effectively prevent signal leakage, improve high-frequency characteristics, and has the characteristics of small processing difficulty and low manufacturing cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of relays, in particular to a shield cover of a high-frequency relay and a high-frequency relay. BACKGROUND

[0002] The high-frequency relay is generally composed of a relay body and a shield part. The relay body includes a main body part and a protection part. The main body part is composed of a magnetic circuit part, a moving part and a contact part. The protection part is generally a box-shaped shell (hereinafter referred to as a shell) formed by injection molding of synthetic resin. The relay body is provided with a plurality of parallel and coplanar lead-out ends protruding from the side surface. The shield part is a simple metal box (hereinafter referred to as a shield cover) formed by bending, which is similar in shape to the shell. The shield cover is provided with a plurality of parallel and coplanar lead-out ends electrically connected to a printed circuit board. A shield cover of a high-frequency relay in the prior art is shown in FIG. 1. Figure 1As shown, the shielding cover 100 is in an open downward box shape, and the shielding cover 100 is formed by bending a plane-shaped metal plate 200 punched out; the metal plate 200 includes a middle part 201 in a rectangular shape as a top plate 101 of the box shape of the shielding cover and side edge parts 202 extending outward from four edges of the middle part to be bent into side plates 102 of the box shape of the shielding cover 100; the top plate 101 and the side plates 102 bent from the four edges enclose a containing cavity 300 for accommodating the relay body, and the structure of the shielding cover 100 forms a joint gap 400 between adjacent side plates 102, and the bottom of two opposite side plates is further provided with a lead-out end 103; the assembly mode of the relay body and the shielding cover is that the relay body is directly assembled into the inner cavity (i.e. the containing cavity) 300 of the shielding cover, and then fixed by an adhesive or a buckle. Since the shielding cover is processed by bending, the joint gap 400 inevitably exists in the four edges, and the leakage degree of the high-frequency signal is positively correlated with the size of the joint gap, and the joint gap must be minimized; however, the shielding cover of the existing high-frequency relay is not designed to prevent signal leakage in structure, and the size of the joint gap mainly depends on the machining precision of the mold; however, the shielding cover inevitably exists in the springback caused by the elasticity of the metal material in the actual processing process, and the springback will reduce the size precision after bending, so that the size of the joint gap is difficult to control. In addition, the coplanarity of the lead-out end of the shielding cover and all the lead-out ends after the assembly of the shielding cover and the relay body will affect the impedance deviation under the high-frequency signal, and the coplanarity is positively correlated with the impedance deviation, so the coplanarity precision of the lead-out end needs to be improved as much as possible; the lead-out end of the shielding cover is arranged on the bent side, and the coplanarity is inevitably affected by the springback; and the assembly mode of the existing shielding cover and the relay body is that the position of the relay body assembled into the shielding cover cannot be adjusted, and the coplanarity of the lead-out end after assembly can be ensured only when the matching size of the two is very close, which greatly increases the processing difficulty of the mold or equipment; and since the inlaid top surface of the shielding cover needs to be treated by glue, the existence of the adhesive further aggravates the dispersion of the coplanarity. Therefore, according to the above, the existing shielding cover structure mainly has the following disadvantages:

[0003] 1. The shielding cover has no structure design for preventing signal leakage, and the size of the bending joint gap is difficult to control, the signal leakage risk is large, and the consistency of the high-frequency characteristic parameters is not easy to guarantee.

[0004] 2. The shielding cover has no guiding and limiting function, the height of the relay body assembled into the shielding cover cannot be adjusted, and the coplanarity precision of the lead-out end is difficult to guarantee, which will increase the deviation of the characteristic impedance matching and aggravate the reflection and loss of the signal. SUMMARY

[0005] The present application aims at overcoming the defects of the prior art, and provides a shielding cover of a high-frequency relay and the high-frequency relay, which can improve the coplanar precision of the leading-out end after assembly, reduce impedance matching deviation, effectively prevent signal leakage, improve high-frequency characteristics, and has the characteristics of small processing difficulty and low manufacturing cost.

[0006] The technical scheme adopted by the present application to solve the technical problems is as follows: a shielding cover of a high-frequency relay, comprising a shielding cover body in the shape of a box with an opening downward; the shielding cover body is formed by bending a metal plate in a planar shape; the metal plate comprises a middle part in the shape of a rectangle as a top plate of the box-shaped shielding cover body and side edge parts extending outward from four edges of the middle part to be bent into side plates of the box-shaped shielding cover body; the top plate and the side plates bent from the four edges enclose a containing cavity for accommodating a relay body; a corresponding protruding protrusion is arranged on one side of the inner side of each of two opposite side plates, and the distance between the top ends of the two protrusions is less than the accommodation size of the relay body between the two opposite side plates, so that the accommodation depth of the relay body in the containing cavity is adjusted by interference fit between the relay body and the two opposite side plates.

[0007] The metal plate is punched; the metal plate has a joint gap between adjacent side plates after being bent, and a leading-out end is arranged at the bottom of a specified side plate; the protrusion is a protruding platform, and the coplanar precision of the leading-out end of the shielding cover body and the leading-out end of the relay body is improved by clamping the relay body by the top end faces of the two protruding platforms; a protruding part is further protruded to the two side edge directions of the side plate from each of two of the four side plates, so that the joint gap between the adjacent side plates is shielded by the protruding part.

[0008] The side plates and the top plate are vertically distributed; the adjacent side plates are also perpendicular to each other; and the leading-out end is formed by bending the bottom of the specified side plate.

[0009] One side of the inner side of the top plate is further provided with a rough structure for improving the adhesive strength between the relay body and the shielding cover.

[0010] The rough structure is a plurality of small pits arranged on one side of the inner side of the top plate, or a piece of rough surface, or a plurality of small protrusions or a plurality of small pits.

[0011] A notch or a rib is further arranged at the bending part between the top plate and the corresponding side plate, and the notch or the rib is interposed between the side edge of the top plate and the top edge of the corresponding side plate, so that the bending strength of the bending part is improved by the notch or the rib.

[0012] Two notches or ribs are arranged at the bending part between the top plate and the corresponding side plate, and the two notches or ribs are uniformly distributed at the bending part; the notches or ribs of the two opposite bending parts of the shielding cover body are mirror-distributed.

[0013] The top end surface of the convex platform is also provided with a chamfer; and the two convex platforms of the shielding cover body are mirror-distributed and respectively arranged at the middle of the inner side surface of the two opposite side plates.

[0014] The two protruding parts of the side plate are symmetrically distributed and protrude from the two side edges of the side plate; the protruding part is further provided with a gap near the bending part between the side plate and the top plate.

[0015] The top plate is rectangular; the side plate corresponding to the long side of the top plate is a long side plate, and the side plate corresponding to the short side of the top plate is a short side plate; the two convex platforms are respectively arranged at the inner side surface of the two short side plates; the protruding parts are respectively arranged at the two side edges of the two long side plates; the designated side plate with the leading end is a long side plate.

[0016] A high-frequency relay includes a relay body and a shielding cover as described above; the relay body is arranged in the accommodating cavity of the shielding cover body.

[0017] A high-frequency relay includes a relay body and a shielding cover; the shielding cover includes a shielding cover body with an opening downward and a box shape; the shielding cover body is formed by bending a metal plate; the metal plate includes a middle part which is a rectangular top plate of the box-shaped shielding cover body and side edge parts which are side plates of the box-shaped shielding cover body and extend outward from the four edges of the middle part; the top plate and the side plates formed by bending the four edges enclose an accommodating cavity for accommodating the relay body; two protruding parts protruding outward are respectively arranged at the two opposite outer side surfaces of the relay body, and the distance between the top ends of the two protruding parts is greater than the size between the inner side surfaces of the two opposite side plates of the shielding cover body, so that the depth of the relay body in the accommodating cavity is adjusted by the interference fit between the protruding parts of the side edges of the relay body and the two opposite side plates.

[0018] The metal plate is punched; the metal plate has a joint gap between the adjacent side plates after bending, and a leading end is arranged at the bottom of the designated side plate; the protruding part is a convex platform, and the coplanar precision of the leading end of the shielding cover body and the leading end of the relay body is improved by the fit between the top end surfaces of the two protruding platforms of the relay body and the inner side surfaces of the two opposite side plates of the shielding cover body; the two of the four side plates further respectively protrude in the direction of the two side edges of the side plate to shield the joint gap between the adjacent side plates.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] 1、The present application adopts the structure that the corresponding convex protruding parts are arranged on the inner side of the two opposite side plates, and the distance between the top ends of the two protruding parts is less than the installation size of the relay body between the two opposite side plates, so that the installation depth of the relay body in the accommodating cavity is adjusted by the interference fit between the relay body and the two opposite side plates. The structure of the present application can adjust the assembly position of the relay body and the shielding cover body by the interference fit between the two protruding parts of the shielding cover body and the relay body, so that the coplanar precision of the leading end of the shielding cover body and the leading end of the relay body can be improved, and the impedance matching deviation can be reduced.

[0021] 2、The present application adopts the structure that the metal plate is punched, the protruding part is a convex platform, and the protruding parts are further arranged on the two side plates in the four side plates. The shielding cover body made of the punched metal plate has the characteristics of small processing difficulty and low manufacturing cost. The top end surface (i.e. the plane) of the convex platform can clamp the relay body, so that the relay body is not easy to be inclined when being installed in the shielding cover, that is, the relay body can be installed vertically to the top surface of the shielding cover, so that the relay body is prevented from being pressed against the side plate after being inclined, and the large interface gap between the adjacent side plates is avoided. Moreover, the side plate with the leading foot of the shielding cover is not inclined, which is beneficial to improving the coplanar precision of the leading foot of the shielding cover and the leading foot of the relay body. Meanwhile, the interference fit part is in surface-to-surface contact, so that the assembly precision is high. The protruding part can shield the interface gap between the adjacent side plates, so that the signal leakage is effectively prevented, and the high-frequency characteristic is improved.

[0022] 3、The present application adopts the structure that the notch or the rib is arranged at the bending part between the top plate and the corresponding side plate, and the convex platform is arranged on the inner side of the corresponding side plate. The notch or the rib can increase the rigidity of the side plate close to the top plate, that is, the side plate can be equivalent to two parts, the rigidity close to the top plate is large, and the rigidity close to the opening of the shielding cover body is small. Since the convex platform is arranged in the middle of the corresponding side plate, the opening of the shielding cover body and the top plate of the shielding cover body are both away from the convex platform. The rigidity close to the opening of the shielding cover body is large, so that the relay body is convenient to install. The rigidity close to the top plate is large, so that the small interference fit amount can achieve large rebound force, and the convex platform and the relay body are kept flat as much as possible. The final effect is that the convex platform can adjust the height and reduce the interface gap between the adjacent side plates as much as possible.

[0023] 4, The application has the advantages that the top plate is in the shape of a rectangle, the long side of the top plate corresponds to the long side plate, the short side of the top plate corresponds to the short side plate, the two protruding platforms are arranged on the inner side of the two short side plates, the protruding parts are arranged on the two long side plates, and the designated side plate with the leading end is the long side plate. The deformation of the protruding platform of the short side plate after interference fit with the relay body does not affect the leading end of the long side plate, and the protruding parts on the two long side plates can shield the gap caused by the deformation of the short side plate, thereby improving the coplanarity precision of the leading end of the shielding cover and the leading end of the relay body and reducing signal leakage. The notch or rib at the bending position of the top plate and the long side plate can increase the rigidity of the bottom of the long side plate, reduce the rebound of the long side plate after bending, effectively avoid the increase of the gap caused by the deformation of the long side plate, and achieve the purpose of reducing signal leakage. Meanwhile, the height consistency of the leading end arranged on the long side plate is improved, thereby improving the coplanarity precision of the leading end of the shielding cover and the leading end of the relay body and reducing impedance matching deviation.

[0024] The application will be further described in detail below in combination with the drawings and examples. However, the shielding cover of the high-frequency relay and the high-frequency relay of the application are not limited to the examples. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a perspective structural schematic view of a shielding cover of a high-frequency relay of the prior art;

[0026] Figure 2 is a perspective structural schematic view of the shielding cover of the example one of the application;

[0027] Figure 3 is a perspective structural schematic view of the shielding cover of the example one of the application (the bottom is turned up);

[0028] Figure 4 is a side view of the shielding cover of the example one of the application;

[0029] Figure 5 is a bottom view of the shielding cover of the example one of the application;

[0030] Figure 6 is a sectional view along the line A-A in Figure 5 ;

[0031] Figure 7 is an enlarged view of part B in Figure 6 ;

[0032] Figure 8 is an enlarged view of part C in Figure 6 ;

[0033] Figure 9 is Figure 6 is an enlarged schematic view of another structure of the C portion in

[0034] Figure 10 is a perspective configuration schematic view of another structure of the shield of Embodiment 1 of the present application;

[0035] Figure 11 is a perspective configuration schematic view of the high-frequency relay of Embodiment 1 of the present application;

[0036] Figure 12 is a perspective configuration schematic view of the relay body of the high-frequency relay of Embodiment 1 of the present application;

[0037] Figure 13 is a process schematic view of the process of fitting the relay body of the high-frequency relay of Embodiment 1 of the present application into the shield Figure 1 ;

[0038] Figure 14 is a process schematic view of the process of fitting the relay body of the high-frequency relay of Embodiment 1 of the present application into the shield Figure 2 ;

[0039] Figure 15 is a process schematic view of the process of fitting the relay body of the high-frequency relay of Embodiment 1 of the present application into the shield Figure 3 ;

[0040] Figure 16 is a schematic view of the structure of the high-frequency relay of Embodiment 1 of the present application after fitting the relay body into the shield;

[0041] Figure 17 is a connection schematic view of the high-frequency relay of Embodiment 1 of the present application and a circuit board;

[0042] Figure 18 is a schematic view of the high-frequency relay of Embodiment 2 of the present application;

[0043] Figure 19 is a process schematic view of the process of fitting the relay body of the high-frequency relay of Embodiment 2 of the present application into the shield;

[0044] Figure 20 is a schematic view of the structure of the high-frequency relay of Embodiment 2 of the present application after fitting the relay body into the shield. DETAILED DESCRIPTION

[0045] Embodiment 1

[0046] Referring to Figures 2 to 17As shown in the drawings, the shielding cover of the high-frequency relay of the present application comprises a shielding cover body 2 with a box shape with an opening downward; the shielding cover body 2 is formed by bending a plane-shaped metal plate 1 punched out; the metal plate 1 comprises a middle part 11 in a rectangular shape as the top plate 21 of the box-shaped shielding cover body and side edge parts 12 extending outward from the four edges of the middle part 11 to be bent into the side plates 22 of the box-shaped shielding cover body 2; the top plate 21 and the side plates 22 bent from the four edges surround a containing cavity 23 for accommodating the relay body 3, have a joint gap 24 between the adjacent side plates 22, and are provided with lead-out ends 25 at the bottom of the designated side plates; one side of the inner side of the two opposite side plates 22 is respectively provided with a corresponding protruding raised part 4, and the distance between the top ends of the two raised parts 4 is smaller than the accommodation size of the relay body 3 between the two opposite side plates 22, so that the accommodation depth of the relay body 3 in the containing cavity 23 is adjusted by the interference fit between the relay body 3 and the two opposite side plates 22, thereby improving the coplanar precision of the lead-out ends 25 of the shielding cover body 2 and the lead-out ends 31 of the relay body 3; two of the four side plates 22 are respectively provided with a protruding part 5 protruding to the two side edge directions of the side plates, so that the joint gap 24 between the adjacent side plates 22 is shielded by the protruding part 5. After the coplanar precision of the lead-out ends 25 of the shielding cover body 2 and the lead-out ends 31 of the relay body 3 is improved, as shown in the drawings, Figure 17 As shown in the drawings, the shielding cover body 2 of the high-frequency relay of the present application comprises a shielding cover body 2 with a box shape with an opening downward; the shielding cover body 2 is formed by bending a plane-shaped metal plate 1 punched out; the metal plate 1 comprises a middle part 11 in a rectangular shape as the top plate 21 of the box-shaped shielding cover body and side edge parts 12 extending outward from the four edges of the middle part 11 to be bent into the side plates 22 of the box-shaped shielding cover body 2; the top plate 21 and the side plates 22 bent from the four edges surround a containing cavity 23 for accommodating the relay body 3, have a joint gap 24 between the adjacent side plates 22, and are provided with lead-out ends 25 at the bottom of the designated side plates; one side of the inner side of the two opposite side plates 22 is respectively provided with a corresponding protruding raised part 4, and the distance between the top ends of the two raised parts 4 is smaller than the accommodation size of the relay body 3 between the two opposite side plates 22, so that the accommodation depth of the relay body 3 in the containing cavity 23 is adjusted by the interference fit between the relay body 3 and the two opposite side plates 22, thereby improving the coplanar precision of the lead-out ends 25 of the shielding cover body 2 and the lead-out ends 31 of the relay body 3; two of the four side plates 22 are respectively provided with a protruding part 5 protruding to the two side edge directions of the side plates, so that the joint gap 24 between the adjacent side plates 22 is shielded by the protruding part 5. After the coplanar precision of the lead-out ends 25 of the shielding cover body 2 and the lead-out ends 31 of the relay body 3 is improved, as shown in the drawings,

[0047] In the embodiment, the raised part 4 is a raised platform, and the relay body 3 is clamped by the top end faces of the two raised platforms 4, thereby improving the coplanar precision of the lead-out ends 25 of the shielding cover body 2 and the lead-out ends 31 of the relay body 3.

[0048] In the embodiment, the top plate 21 is in a rectangular shape; the side plate 22 corresponding to the long side of the top plate 21 is a long side plate 221, and the side plate corresponding to the short side of the top plate 21 is a short side plate 222; the two raised platforms 4 are respectively arranged on one side of the inner side of the two short side plates 222, and the raised platforms 4 are formed by beating the outer side of the short side plates 222 to form depressions; the protruding parts 5 are respectively arranged on the two side edges of the two long side plates 221; the designated side plate provided with the lead-out ends 25 is a long side plate 221.

[0049] In this embodiment, the side plates and the top plate are vertically distributed, that is, the two long side plates 221 are vertically distributed with the top plate 21, and the two short side plates 222 are also vertically distributed with the top plate 21; the adjacent side plates are also perpendicular to each other, that is, the adjacent long side plates 221 and short side plates 222 are also perpendicular to each other; the lead-out end 25 is formed by bending the bottom of the designated side plate, i.e., the long side plate 221.

[0050] The inner side of the top plate is also provided with a rough structure to improve the adhesive strength between the relay body and the shielding cover. In this embodiment, the rough structure consists of multiple small pits 211 on the inner side of the top plate 21. By providing small pits 211 on the inner side of the top plate 21, this invention can improve the defect of poor bonding between the sealant and the metal, improve the bonding reliability between the shielding cover and the relay body, and avoid the problem of the shielding cover loosening or falling off after the relay is subjected to impact vibration or high temperature.

[0051] In this embodiment, a cut 61 (e.g., a notch) is provided at the bend where the top plate 21 and the side plate 22 meet, connecting the side edge of the top plate 21 and the top edge of the side plate 22. Figure 8 As shown), of course, it can also be rib 62 (as shown). Figure 9 (as shown); the cut 61 or rib can be used to increase the bending strength at the bend.

[0052] In this embodiment, as Figure 5 As shown, two cuts 61 or ribs are provided at the bend where the top plate 21 and the short side plate 222 meet, and the two cuts 61 or ribs are symmetrically distributed at the bend; in the shielding cover body 2, the cuts or ribs at the two opposite bends (i.e., the bends corresponding to the two short side plates 222) of the shielding cover body 2 are mirror images of each other. This structure of the present invention, with the two cuts 61 at the same bend symmetrically distributed, can ensure uniform strength at the bend and prevent one side of the bend from warping.

[0053] Setting cuts or ribs at the bends where the top plate 21 and the side plate 22 meet can reduce the springback of the material after bending, improve the dimensional stability after bending, and ensure the consistency of the joint gaps between adjacent side plates. In this embodiment, the cuts 61 or ribs 62 are set at the bends between the two short side plates 222 and the top plate 21, with two cuts 61 or ribs 62 at each bend; of course, cuts or ribs can also be set at the bends between the two long side plates 221 and the top plate 21.

[0054] In this embodiment, the top surface of the raised platform 4 is also provided with a chamfer 41; and the two raised platforms 4 are mirror images of each other, and are respectively located in the middle of the inner side of the two opposing short side plates 222. By placing the raised platform 4 in the middle of the short side plate 222, the present invention can ensure that the opening of the shield body is a certain distance away from the raised platform 4, which is used for pre-guiding the relay body 3 when it is first installed into the shield body 2, so as to reduce the assembly difficulty; the chamfer 41 provided at the top surface of the raised platform 4 can be used for guiding the relay body 3 before it is installed into the shield body 2 for interference fit, so as to avoid interference between the relay body 3 and the shield body 2 when it is installed.

[0055] In this embodiment, the protrusions 5 extending from both sides of the long side plate 221 are symmetrically distributed, and the protrusions 5 are also provided with a clearance notch 51 at the bend between the long side plate 221 and the top plate 21.

[0056] In this embodiment, the protrusion dimension of the protrusion 5 on the long side plate 221 is designed to be greater than the thickness dimension of the short side plate 222. The protrusion 5 on the long side plate 221 can be used to cover the joint gap of the shielding cover body 2 and the gap caused by the outward deformation of the protruding platform 4 on the short side plate 222 of the relay body 3 after interference fit, thereby reducing high-frequency signal leakage. A clearance notch 51 is provided at the bend between the long side plate 221 and the top plate 21 (the root of the protrusion cannot coincide with the bend) to avoid interference after the adjacent side plates are bent, or to avoid interference by providing clearance on the small side plate, which would increase the gap between adjacent side plates.

[0057] When the relay body 3 is installed into the shielding cover body 2, the bottom of the shielding cover body 2 should be facing upwards, i.e., the opening of the shielding cover body 2 should be facing upwards. The relay body 3 is then installed into the shielding cover body 2 from top to bottom (e.g., Figures 13 to 16 As shown), the relay body 3 and the shielding cover body 2 are initially fitted with a clearance (as shown). Figure 13 As shown), a portion of the relay body 3 is inserted into the shielding cover body 2. The relay body 3 does not contact the raised platform 4. At this time, the shielding cover body 2 initially limits the relay body 3 (the relay body 3 still has degrees of freedom, but it will not tilt or lean). The relay body 3 will not squeeze the shielding cover body 2. Then, the relay body 3 and the shielding cover body 2 transition into a more stable fit, as shown... Figure 14 As shown, the chamfer on the raised platform 4 of the shielding cover body 2 gradually changes the fit between the relay body 3 and the shielding cover body 2 from a clearance fit to an interference fit. At this time, the raised platform 4 of the shielding cover body 2 begins to guide the relay body 3, and the relay body 3 will also exert a certain amount of compression deformation on the shielding cover body 2. The short side plate 222 of the shielding cover body 2 will show a certain outward deformation amount δ1. As the insertion depth of the relay body 3 increases, the relay body 3 and the shielding cover body 2 are in an interference fit, such as...Figure 15 As shown, the deformation amount of the shield body 2 extruded by the relay body 3 is also increased (the maximum deformation amount is represented by δ2), and the adjacent side plate joint gap is increased. In order to minimize the deformation amount caused by the interference fit, the shield body can be designed as follows: first, the protruding height of the protruding platform 4 is as small as possible; second, the top surface of the protruding platform 4 is spaced apart from the opening of the shield body 2, because the opening of the shield body 2 has good flexibility and small rebound force after deformation, which is beneficial to the assembly from the gap fit to the interference fit. At the same time, the top surface of the protruding platform 4 is spaced apart from the bottom of the shield body 2 (i.e. the inner surface of the top plate) in the relay body 3, because the bottom has large rigidity and large rebound force after deformation, which is not conducive to assembly; and the closer to the bottom, the greater the deformation amount of the short side plate after being extruded, and the greater the joint gap between the adjacent side plates after assembly. Therefore, the optimal position of the protruding platform 4 in the short side plate is in the middle, which can utilize the characteristics of the opening with large flexibility to facilitate the assembly process of the relay body 3, and can also utilize the characteristics of the bottom with large rigidity to achieve large rebound force with small interference fit amount, so as to keep the protruding platform 4 and the relay body 3 as flat as possible. The final effect is that the protruding platform 4 can adjust the height and minimize the joint gap between the adjacent side plates. Of course, the deformation amount will be generated finally, which cannot be eliminated; but through the above design, the gap can be minimized, as shown in FIG. 16.

[0058] As Figure 3 shown, in the embodiment, the lead-out end 25 of the shield body 2 is arranged at the bottom end of the two side edges of the long side plate 221, that is, each long side plate 221 is provided with two lead-out ends 25; of course, a plurality of lead-out ends 25 can be arranged at the bottom end of the long side plate 221 according to needs (as shown in FIG. 17). Figure 10

[0059] The high-frequency relay of the present application comprises a relay body 3 and the above shield; the relay body 3 is arranged in the accommodating cavity 23 of the shield body 2.

[0060] ​The shielding cover of the high-frequency relay and the high-frequency relay of the present application adopt the structure that the two opposite short side plates 222 are provided with corresponding protruding raised portions 4 on the inner side of one side, and the distance between the top ends of the two raised portions 4 is less than the installation size of the relay body 3 between the two opposite short side plates 222, so as to adjust the installation depth of the relay body 3 in the accommodating cavity by the interference fit between the relay body 3 and the two opposite short side plates 222. The structure of the present application can adjust the assembly position of the relay body 3 and the shielding cover body 2 by the interference fit between the two raised portions 4 of the shielding cover body 2 and the relay body 3, so as to improve the coplanar precision of the lead-out end 25 of the shielding cover body 2 and the lead-out end 31 of the relay body 3, and reduce the impedance matching deviation.

[0061] The shielding cover of the high-frequency relay and the high-frequency relay of the present application adopt the structure that the metal plate member 1 is punched, the raised portion 4 is a raised platform, and the two long side plates 221 of the four side plates are respectively provided with protruding portions 5 extending to the two side edges of the side plates. The structure of the present application has the characteristics of small processing difficulty and low manufacturing cost for manufacturing the shielding cover body 2 by the punched metal plate member 1; the top end surface (i.e. the flat surface) of the raised platform 4 can clamp the relay body 3, so as to prevent the relay body 3 from being inclined when being installed in the shielding cover 2, that is, the relay body 3 can be installed vertically to the top surface of the shielding cover 2, so as to avoid the increase of the interface gap caused by the pressing of the side plate 22 by the inclined relay body 3; moreover, the non-inclination of the side plate (i.e. the long side plate) 221 provided with the lead-out foot of the shielding cover is also beneficial to improve the coplanar precision of the lead-out foot of the shielding cover and the lead-out foot of the relay body; at the same time, the interference fit part is in surface-to-surface contact, so as to have the characteristic of high assembly precision; the protruding portion 5 can shield the interface gap between the adjacent side plates 22, so as to effectively prevent the signal leakage and achieve the purpose of improving the high-frequency characteristics.

[0062] The shielding cover of the high-frequency relay and the high-frequency relay of the present application adopt the structure that the bending part between the top plate 21 and the corresponding short side plate 222 is further provided with a notch 61 or a rib 62 which is connected between the side edge of the top plate and the top edge of the side plate, and the convex platform 4 is arranged in the middle of the inner side of the short side plate 222. The structure of the present application can increase the rigidity of the short side plate 222 near the top plate by using the notch 61 or the rib 62, that is, the short side plate 222 can be equivalent to two parts, the rigidity of the part near the top plate 21 is larger, and the rigidity of the part near the opening of the shielding cover body 2 is smaller. Since the convex platform 4 is arranged in the middle of the short side plate 222, it is away from the opening of the shielding cover body 2 and the top plate 21 of the shielding cover body 2. The flexibility of the part of the short side plate 222 near the opening of the shielding cover body 2 can be utilized to facilitate the installation of the relay body 3, and the rigidity of the part of the short side plate 222 near the top plate 21 can be utilized to realize a large rebound force with a small interference fit, so as to ensure that the convex platform 4 and the relay body 3 are kept as flat as possible. The final effect is that the convex platform 4 can realize height adjustment and minimize the joint gap between adjacent side plates.

[0063] The shielding cover of the high-frequency relay and the high-frequency relay of the present application adopt the structure that the top plate 21 is arranged in a rectangular shape, the side plate corresponding to the long side of the top plate 21 is a long side plate 221, the side plate corresponding to the short side of the top plate 21 is a short side plate 222, the two convex platforms 4 are arranged on the inner side of the two short side plates 222 respectively, the convex parts 5 are arranged on the two side edges of the two long side plates 221 respectively, and the designated side plate provided with the lead-out end 25 is the long side plate 221. The structure of the present application can not affect the lead-out end 25 of the long side plate 221 due to the deformation of the convex platform 4 of the short side plate 222 after interference fit with the relay body 3, and the convex parts 5 of the two side edges of the long side plate 221 can shield the gap caused by the deformation of the short side plate 222, so as to improve the coplanar precision of the lead-out end 25 of the shielding cover and the lead-out end 31 of the relay body 3 and reduce signal leakage. For the long side plate 221, the notch or rib at the bending part of the top plate 21 and the long side plate 221 can increase the rigidity of the bottom of the long side plate 221, so as to reduce the rebound amount of the long side plate 221 after bending, effectively avoid the increase of the gap caused by the outward deformation of the long side plate 221, achieve the purpose of reducing signal leakage, improve the consistency of the height dimension of the lead-out end 25 arranged on the long side plate 221, and finally realize the reduction of impedance matching deviation.

[0064] Embodiment two

[0065] Reference Figures 18 to 20As shown, the shielding cover of the high-frequency relay of the present application is different from that of the first embodiment in that no protruding platform for interference fit with the relay body 3 is arranged on the two short side plates 222 of the shielding cover body 2. The protruding platform is arranged at the two ends of the length of the relay body 3, i.e. the two opposite outer sides (the two end faces of the length) of the relay body 3 are respectively provided with outwardly protruding protruding platforms 7, and the distance between the two protruding platforms 4 is greater than the size between the two opposite short side plates 222 of the shielding cover body 2 for fitting to the two opposite outer sides of the relay body, so as to adjust the depth of the relay body 3 in the accommodating cavity 23 of the shielding cover body 2 by interference fit between the protruding platforms 7 of the side edges of the relay body 3 and the two opposite short side plates 222 of the shielding cover body 2, thereby improving the coplanar precision of the lead-out end 25 of the shielding cover body 2 and the lead-out end 31 of the relay body 3.

[0066] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed above with the preferred embodiment, it is not intended to limit the present application. Any skilled person in the art can make many possible changes and modifications to the technical solution of the present application, or modify equivalent embodiments, without departing from the scope of the technical solution of the present application, by using the disclosed technical content. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, without departing from the content of the technical solution of the present application, shall fall within the scope of protection of the technical solution of the present application.

Claims

1. A shield for a high frequency relay, comprising a shield body having a box shape with an opening facing downward; the shield body being formed by bending a flat metal plate member; the metal plate member including a middle portion which is a top plate of the box shape of the shield body and has a rectangular shape, and side edge portions which extend outward from four sides of the middle portion to be bent into side plates of the box shape of the shield body; the top plate and the side plates bent from the four sides enclosing a receiving cavity for receiving a relay body therein; characterized in that: The inner side of the two opposite side plates is respectively provided with a corresponding convex protruding part, the protruding part is a convex platform, and the distance between the top ends of the two convex platforms is less than the installation size of the relay body between the two opposite side plates, so that the installation depth of the relay body in the accommodating cavity is adjusted by the interference fit between the relay body and the two opposite side plates; the top end of the protruding part is provided with a flat surface for face-to-face contact with the interference fit part of the relay body, the top end of the two convex platforms faces the relay body for clamping, and the two convex platforms of the shield body are mirror image distributed and respectively located in the middle of the inner side of the two opposite side plates.

2. The shield for a high frequency relay according to claim 1, characterized by: The metal plate is punched; the adjacent side plates after bending of the metal plate have a joint gap, and the bottom of the specified side plate is provided with a lead-out end; two of the four side plates respectively protrude in the direction of the two side edges of the side plate to shield the joint gap between the adjacent side plates.

3. The shield for a high frequency relay according to claim 2, characterized in that: The side plate and the top plate are vertically distributed; the adjacent side plates are also perpendicular to each other; and the lead-out end is formed by bending the bottom of the specified side plate.

4. The shield for a high frequency relay according to claim 1, characterized by: The inner side of the top plate is also provided with a rough structure for improving the adhesive strength between the relay body and the shield.

5. The shield for a high frequency relay according to claim 4, characterized in that: The rough structure is a plurality of small pits provided on the inner side of the top plate, or a piece of rough surface, or a plurality of small protrusions or a plurality of small pits.

6. The shield for a high frequency relay according to claim 1, characterized by: The bending part between the top plate and the corresponding side plate is also provided with a notch or a rib joint between the side edge of the top plate and the top edge of the corresponding side plate, so as to improve the bending strength of the bending part.

7. The shield for a high frequency relay according to claim 1, characterized by: The bending part between the top plate and the corresponding side plate is provided with two notches or ribs, and the two notches or ribs are uniformly distributed at the bending part; and the notches or ribs of the two opposite bending parts of the shield body are mirror image distributed.

8. The shield for a high frequency relay according to claim 1, characterized by: The top end surface of the convex platform is also provided with a chamfer.

9. The shield for a high frequency relay according to claim 1, characterized by: The protruding parts protruding in the direction of the two side edges of the side plate are symmetrically distributed, and the protruding part near the bending part between the side plate and the top plate is also provided with a gap.

10. The shield for a high frequency relay according to claim 2, characterized by: The top plate is rectangular in shape; the side plate corresponding to the long side of the top plate is a long side plate, and the side plate corresponding to the short side of the top plate is a short side plate; the two convex platforms are respectively arranged on the inner side of the two short side plates; the protruding parts are respectively arranged on the two side edges of the two long side plates; and the specified side plate provided with the lead-out end is a long side plate.

11. A high frequency relay characterized by: The relay body and the shield according to any one of claims 1 to 10 are included; and the relay body is installed in the accommodating cavity of the shield body.

12. A high frequency relay comprising a relay main body and a shield cover; the shield cover comprising a shield cover main body having a box shape with an opening facing downward; the shield cover main body being formed by bending a flat metal plate member; the metal plate member comprising a middle portion as a top plate of the box shape of the shield cover main body and having a rectangular shape, and side edge portions extending outwardly from four sides of the middle portion to be bent as side plates of the box shape of the shield cover main body; the top plate and the side plates bent from the four sides enclosing a receiving cavity for accommodating the relay main body; characterized in that: The two opposite outer sides of the relay body are respectively provided with outwardly protruding protruding parts, the protruding parts are protruding platforms, and the distance between the top ends of the two protruding platforms is greater than the size between the inner sides of the two opposite side plates of the shielding cover body for fitting the two opposite side plates of the relay body, so as to adjust the depth of the relay body in the accommodating cavity by the interference fit between the protruding parts of the side edges of the relay body and the two opposite side plates, the top ends of the protruding parts are provided with planes for face-to-face contact with the interference fit part of the relay body; the top ends of the two protruding platforms are clamped against the relay body, and the two protruding platforms of the shielding cover body are mirror image distributed and respectively located in the middle of the inner sides of the two opposite side plates.

13. The high frequency relay according to claim 12, characterized in that: The metal plate is punched; the adjacent side plates after being bent have a joint gap, and the bottom of the designated side plate is provided with a leading end; the protruding part is a protruding platform, the top end of the two protruding platforms of the relay body is matched with the inner side of the two opposite side plates of the shielding cover body, so as to improve the coplanar precision of the leading end of the shielding cover body and the leading end of the relay body; two of the four side plates further respectively protrude in the direction of the two side edges of the side plates to shield the joint gap between the adjacent side plates.

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