Plastic package type relay with better strength

Abstract

The utility model discloses a plastic package type relay with better strength. The plastic package type relay comprises a plastic package type relay body. The plastic package type relay body is provided with a shell; the improved structure is characterized by further comprising a reinforcing frame, and the reinforcing frame is provided with an opening part and a transparent bottom surface; the plastic package type relay body is matched in the reinforcing frame, and leading-out pins of the plastic package type relay body forwards extend out of the opening part; and the plastic package type relay body is fixed with the reinforcing frame at the opening part of the reinforcing frame. According to the utility model, the structural strength of the housing of the plastic package type relay body is enhanced through the reinforcing frame, and the risk of glue cracking due to the deformation of the housing of the plastic package type relay body in a high-temperature environment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to a plastic-sealed relay with better strength. Background Art

[0002] A relay is an electronic control device with a control system (also known as an input circuit) and a controlled system (also known as an output circuit). It is commonly used in automatic control circuits. It is essentially an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays a role in automatic regulation, safety protection, and circuit conversion.

[0003] Currently, plastic-sealed relays, such as Figure 1 As shown, the relay movement 2' is mainly placed in the shell 1', and then the airtightness requirement of the relay is achieved by dispensing glue and plastic sealing; however, this method has the following problems: since the interior of the plastic-sealed relay is a closed cavity, under thermal stress (such as: welding heat during the installation of PCB relays), the gas inside the relay is heated and the pressure increases, and then the product expands, causing cracks at the junction of the shell 1' and the glue 3', resulting in a decrease in the airtightness of the plastic-sealed relay. Utility Model Content

[0004] The purpose of the present utility model is to overcome the shortcomings of the existing technology and provide a plastic-sealed relay with better strength. The structural strength of the outer shell of the plastic-sealed relay body is increased by a reinforcing frame, thereby reducing the risk of deformation of the outer shell of the plastic-sealed relay body and glue cracking in a high temperature environment.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a plastic-sealed relay with better strength, including a plastic-sealed relay body; the plastic-sealed relay body has an outer shell; and also includes a reinforcement frame, the reinforcement frame having an opening and a transparent bottom surface; the plastic-sealed relay body is adapted to the reinforcement frame, and the lead pins of the plastic-sealed relay body extend forward from the opening; the plastic-sealed relay body is fixed to the reinforcement frame at the opening of the reinforcement frame.

[0006] After the plastic-encapsulated relay body is fixed to the reinforcement frame, a portion of the plastic-encapsulated relay body extends rearwardly from the bottom surface of the reinforcement frame.

[0007] The outer side surface of the plastic-sealed relay body corresponding to the opening of the reinforcement frame is provided with a first wavy structure, and / or the inner side surface of the opening of the reinforcement frame is provided with a second wavy structure.

[0008] When the plastic-encapsulated relay body is installed in the reinforcement frame, the first wavy structure of the plastic-encapsulated relay body matches the second wavy structure of the reinforcement frame.

[0009] The plastic-sealed relay body and the reinforcement frame are fixed to each other by glue dispensing or ultrasonic welding.

[0010] The plastic-sealed relay body and the reinforcement frame are fixed to each other by snapping.

[0011] The outer shell of the plastic-sealed relay body is provided with a convex rib surrounding the periphery at a position corresponding to the mouth of the reinforcement frame, and the inner side of the mouth of the reinforcement frame is provided with a step surface. When the plastic-sealed relay body is installed in the reinforcement frame, the convex rib of the plastic-sealed relay body rests on the step surface of the reinforcement frame.

[0012] The first wavy structure of the plastic-sealed relay body is arranged on the outer side of the rib.

[0013] Bosses are provided on the sides of the reinforcement frame, and the sides of the plastic-sealed relay body installed in the reinforcement frame rest against the bosses.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The present invention also includes a reinforcement frame having an opening and a transparent bottom surface. The plastic-encapsulated relay body fits within the reinforcement frame, with its lead pins extending forward from the opening. The plastic-encapsulated relay body is secured to the reinforcement frame at the opening. This structure of the present invention increases the structural strength of the plastic-encapsulated relay body's housing through the reinforcement frame, reducing the risk of deformation and glue cracking in high-temperature environments. If the reinforcement frame fits only within the opening of the plastic-encapsulated relay body's housing, it primarily strengthens the opening.

[0016] 2. The present invention adopts a method in which the outer side surface of the plastic-sealed relay body corresponding to the mouth of the reinforcement frame is provided with a first wavy structure, and / or the inner side surface of the mouth of the reinforcement frame is provided with a second wavy structure, thereby ensuring that the glue can better flow into the space between the reinforcement frame and the outer shell of the plastic-sealed relay body, and the mating surface of the reinforcement frame and the outer shell of the plastic-sealed relay body is wavy, which increases the contact area between the glue and the outer shell and the reinforcement frame. At the same time, the bonding force between the two is changed from a single direction to multiple directions, which can enhance the bonding strength between the plastic-sealed relay body and the reinforcement frame.

[0017] 3. In the present invention, the outer shell of the plastic-sealed relay body is provided with convex ribs surrounding the periphery at the position corresponding to the mouth of the reinforcement frame, and the inner side of the mouth of the reinforcement frame is provided with a step surface to achieve positioning between the reinforcement frame and the plastic-sealed relay body, so as to facilitate fixation by dispensing glue or ultrasonic welding.

[0018] 4. In the present invention, since the plastic-sealed relay body and the reinforcement frame are fixed by a snap-fit ​​method, after the relay is glued, if it needs to be transferred (such as to an oven), the snap-fit ​​structure can ensure a reliable connection between the reinforcement frame and the plastic-sealed relay body without the need for other auxiliary fixing tooling.

[0019] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments; however, the present invention, which is a plastic-sealed relay with better strength, is not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of a plastic-sealed relay in the prior art;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the first embodiment of the present invention (with the bottom surface turned upward);

[0022] Figure 3 It is a cross-sectional schematic diagram of the first embodiment of the present utility model;

[0023] Figure 4 This is a bottom view of the plastic-encapsulated relay body of the first embodiment of the present utility model;

[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of the reinforcement frame of the first embodiment of the present invention (with the bottom surface turned upward);

[0025] Figure 6 It is a cross-sectional schematic diagram of the second embodiment of the present utility model;

[0026] Figure 7 It is a cross-sectional schematic diagram of the third embodiment of the present utility model;

[0027] Figure 8 It is a cross-sectional schematic diagram of the fourth embodiment of the present utility model;

[0028] Figure 9 This is a schematic diagram of the three-dimensional structure of the reinforcement frame of the fourth embodiment of the present invention (with the bottom surface turned upward);

[0029] Figure 10 It is a cross-sectional schematic diagram of the reinforcement frame of the fourth embodiment of the present utility model;

[0030] Figure 11 This is a bottom view of the reinforcement frame of the fourth embodiment of the present utility model;

[0031] Figure 12 yes Figure 11 A magnified schematic diagram of point A;

[0032] Figure 13This is a schematic diagram of the three-dimensional structure of the plastic-sealed relay body of the fourth embodiment of the present utility model (with the bottom surface turned upward);

[0033] Figure 14 This is a bottom view of the plastic-sealed relay body of the fourth embodiment of the present utility model;

[0034] Figure 15 yes Figure 14 A magnified schematic diagram of point B;

[0035] Figure 16 It is a cross-sectional schematic diagram of the fifth embodiment of the present utility model;

[0036] Figure 17 This is a cross-sectional schematic diagram of Example 6 of the present utility model (with the bottom surface turned upward);

[0037] Figure 18 yes Figure 17 An enlarged schematic diagram of point C;

[0038] Figure 19 This is a schematic diagram of the three-dimensional structure of the reinforcement frame of the sixth embodiment of the present invention (with the bottom surface turned upward);

[0039] Figure 20 It is a cross-sectional schematic diagram of the reinforcement frame of the sixth embodiment of the present utility model. DETAILED DESCRIPTION

[0040] Example 1

[0041] See also Figures 2 to 5 As shown, the present invention provides a plastic-sealed relay with better strength, comprising a plastic-sealed relay body 1; the plastic-sealed relay body 1 having a shell 11; and further comprising a reinforcement frame 2, the reinforcement frame 2 having an opening 21 and a transparent bottom surface; the plastic-sealed relay body 1 is adapted in the reinforcement frame 2, and the lead pins 12 of the plastic-sealed relay body 1 extend forward from the opening 21; the plastic-sealed relay body 1 is fixed to the reinforcement frame 2 at the opening 21 of the reinforcement frame 2.

[0042] In this embodiment, after the plastic-encapsulated relay body 1 and the reinforcement frame 2 are fixed, a portion of the plastic-encapsulated relay body 1 extends backward out of the bottom surface of the reinforcement frame 2 .

[0043] In this embodiment, the plastic-encapsulated relay body 1 and the reinforcement frame 2 are fixed by glue dispensing or ultrasonic welding. In this embodiment, the opening 21 of the reinforcement frame 2 is covered with a whole layer of glue dispensing layer 41.

[0044] In this embodiment, bosses 22 are provided on the four sides of the reinforcement frame 2 , and the sides of the plastic-encapsulated relay body 1 inserted into the reinforcement frame 2 abut against the bosses 22 to reserve a gap for dispensing glue and ensure the glue area.

[0045] The present invention provides a plastic-encapsulated relay with enhanced strength, further comprising a reinforcement frame 2 having an opening 21 and a transparent bottom surface. The plastic-encapsulated relay body 1 fits within the reinforcement frame 2, with the lead pins 12 of the plastic-encapsulated relay body 1 extending forward from the opening 21. The plastic-encapsulated relay body 1 is secured to the reinforcement frame 2 at the opening 21 of the reinforcement frame 2. This structure of the present invention increases the structural strength of the housing 11 of the plastic-encapsulated relay body 1 through the reinforcement frame 2, reducing the risk of deformation of the housing 11 of the plastic-encapsulated relay body 1 to the point of glue cracking in high-temperature environments. If the reinforcement frame 2 fits only at the opening of the housing 11 of the plastic-encapsulated relay body 1, it primarily serves to strengthen the opening of the housing.

[0046] Example 2

[0047] See also Figure 6 As shown, the present invention is a plastic-sealed relay with better strength, which is different from the first embodiment in that a dotted plastic sealing tape 42 is provided between the shell 11 of the plastic-sealed relay body 1 and the reinforcement frame 2 near the mouth 21 of the reinforcement frame 2.

[0048] Example 3

[0049] See also Figure 7 As shown, the present invention provides a plastic-encapsulated relay with improved strength. This differs from the first embodiment in that a stepped surface 26 is provided on the inner side of the mouth 21 of the reinforcement frame 2, and the mouth 21 of the reinforcement frame 2 is covered with a full layer of adhesive 43. A wavy structure 27 is provided on the inner side of the mouth 21 of the reinforcement frame 2 to increase the contact area between the adhesive and the reinforcement frame 2.

[0050] Example 4

[0051] See also Figures 8 to 15 As shown, a plastic-sealed relay with better strength of the present invention is different from the first embodiment in that a first wavy structure 112 is provided at the position of the mouth 21 of the reinforcing frame 2 of the plastic-sealed relay body 1, and a second wavy structure 24 is provided on the inner side surface of the mouth 21 of the reinforcing frame 2. When the plastic-sealed relay body 1 is installed in the reinforcing frame 2, the first wavy structure 112 of the plastic-sealed relay body 1 cooperates with the second wavy structure 24 of the reinforcing frame 2.

[0052] In this embodiment, the shell 11 of the plastic-encapsulated relay body 1 is provided with a convex rib 111 surrounding the periphery at a position corresponding to the mouth 21 of the reinforcement frame 2, and a step surface 23 is provided on the inner side of the mouth 21 of the reinforcement frame 2. When the plastic-encapsulated relay body 1 is installed into the reinforcement frame 2, the convex rib 111 of the plastic-encapsulated relay body 1 rests on the step surface 23 of the reinforcement frame 2.

[0053] In this embodiment, the first wavy structure 112 of the plastic-encapsulated relay body 1 is provided on the outer side of the rib 111 .

[0054] The present invention provides a plastic-sealed relay with better strength. The outer side surface of the plastic-sealed relay body 1 corresponding to the mouth 21 of the reinforcement frame 2 is provided with a first wavy structure 211, and the inner side surface of the mouth 21 of the reinforcement frame 2 is provided with a second wavy structure 24, which ensures that glue can better flow between the reinforcement frame 2 and the outer shell 11 of the plastic-sealed relay body 1, and the mating surface of the reinforcement frame 2 and the outer shell 11 of the plastic-sealed relay body 1 is wavy, which increases the contact area between the glue and the outer shell 11 and the reinforcement frame 2. At the same time, the bonding force between the two is changed from a single direction to multiple directions, which can enhance the bonding strength of the plastic-sealed relay body 1 and the reinforcement frame 2.

[0055] In the present invention, the outer shell 11 of the plastic-sealed relay body 1 is provided with a convex rib 111 surrounding the periphery at a position corresponding to the mouth 21 of the reinforcement frame 2, and a step surface 23 is provided on the inner side of the mouth 21 of the reinforcement frame 2 to achieve positioning between the reinforcement frame 2 and the plastic-sealed relay body 1, so as to facilitate fixation by dispensing glue or ultrasonic welding.

[0056] Example 5

[0057] See also Figure 16 As shown, the present invention is a plastic-sealed relay with better strength, which is different from the fourth embodiment in that the rib 111 of the plastic-sealed relay body 1 and the contact position between the rib 111 and the reinforcement frame 2 are covered with a dotted plastic sealing structure 44.

[0058] Example 6

[0059] See also Figures 17-20 As shown, a plastic-encapsulated relay with improved strength according to the present invention differs from the fourth embodiment in that the plastic-encapsulated relay body 1 and the reinforcement frame 2 are fixed together by a snap-fit ​​mechanism. The mouth 21 of the reinforcement frame 2 is provided with a snap-fit ​​mechanism 25. The rib 111 on the housing 11 of the plastic-encapsulated relay body 1 is snap-fitted between the stepped surface 23 and the snap-fit ​​mechanism 25. The mouth 21 of the reinforcement frame 2 is covered with a full layer of adhesive layer 45.

[0060] The present invention provides a plastic-sealed relay with better strength, in which the plastic-sealed relay body 1 and the reinforcement frame 2 are fixed by a snap-fit ​​method. After the relay is glued, if it needs to be transferred (such as to an oven), the snap-fit ​​structure can ensure a reliable connection between the reinforcement frame 2 and the plastic-sealed relay body 1 without the need for other auxiliary fixing tooling.

[0061] In another embodiment, the plastic-encapsulated relay body 1 and the reinforcement frame 2 may be fixed only by snap fastening or interference fitting without glue.

[0062] The above is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above with a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the field can use the technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention without departing from the scope of the technical solution of the present invention, or modify it into an equivalent equivalent embodiment. Therefore, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A plastic-encapsulated relay with improved strength, comprising a plastic-encapsulated relay body having a housing; and characterized in that: It also includes a reinforcement frame having an opening and a transparent bottom surface; the plastic-sealed relay body is adapted in the reinforcement frame, and the lead pins of the plastic-sealed relay body extend forward from the opening; the plastic-sealed relay body is fixed to the reinforcement frame at the opening of the reinforcement frame.

2. The plastic-sealed relay with improved strength according to claim 1, characterized in that: After the plastic-encapsulated relay body is fixed to the reinforcement frame, a portion of the plastic-encapsulated relay body extends rearwardly out of the bottom surface of the reinforcement frame.

3. The plastic-sealed relay with improved strength according to claim 1, characterized in that: The outer side surface of the plastic-sealed relay body corresponding to the opening of the reinforcement frame is provided with a first wavy structure, and / or the inner side surface of the opening of the reinforcement frame is provided with a second wavy structure.

4. The plastic-sealed relay with improved strength according to claim 3, characterized in that: When the plastic-encapsulated relay body is installed in the reinforcement frame, the first wavy structure of the plastic-encapsulated relay body matches the second wavy structure of the reinforcement frame.

5. The plastic-sealed relay with improved strength according to claim 3, characterized in that: The plastic-sealed relay body and the reinforcement frame are fixed to each other by glue dispensing or ultrasonic welding.

6. The plastic-sealed relay with improved strength according to claim 1, characterized in that: The plastic-sealed relay body and the reinforcement frame are fixed to each other by glue dispensing or ultrasonic welding.

7. The plastic-encapsulated relay with improved strength according to any one of claims 1 to 6, characterized in that: The plastic-sealed relay body and the reinforcement frame are fixed to each other by snapping.

8. The plastic-encapsulated relay with improved strength according to any one of claims 1 to 5, characterized in that: The outer shell of the plastic-sealed relay body is provided with a convex rib surrounding the periphery at a position corresponding to the mouth of the reinforcement frame, and the inner side of the mouth of the reinforcement frame is provided with a step surface. When the plastic-sealed relay body is installed in the reinforcement frame, the convex rib of the plastic-sealed relay body rests on the step surface of the reinforcement frame.

9. The plastic-sealed relay with improved strength according to claim 8, characterized in that: The first wavy structure of the plastic-sealed relay body is arranged on the outer side of the convex rib.

10. The plastic-sealed relay with improved strength according to claim 1, characterized in that: Bosses are provided on the sides of the reinforcement frame, and the sides of the plastic-sealed relay body installed in the reinforcement frame rest against the bosses.

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