Relay housing

Abstract

The utility model discloses a relay housing, which comprises a first housing and a second housing, the first housing is connected with the second housing in a buckling manner, the first housing is provided with a first plug-in part, the second housing is provided with a second plug-in part matched with the first plug-in part, and the inner wall of the second housing is provided with a limiting convex rib. One end of the limiting convex rib extends to the inner side of the second opposite-inserting part, a gap for the first opposite-inserting part to be inserted is reserved between the limiting convex rib and the second opposite-inserting part, and the first opposite-inserting part is inserted into the gap and tightly attached to the second opposite-inserting part. According to the utility model, the first plug-in part of the first shell is inserted between the limiting convex rib and the second plug-in part of the second shell, and the first plug-in part of the first shell and the second plug-in part of the second shell are always attached together under the limitation that the limiting convex rib is matched with the second plug-in part; falling of a buckle connected and matched with the first shell and the second shell or offset at a seam cannot be generated, and reliability and attractiveness of the combination position of the first shell and the second shell are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to a relay housing. Background Art

[0002] In the field of electrical control, relays, as a commonly used electronic component, play an important role. The relay housing is an important component that protects the internal mechanism of the relay and ensures its normal operation. Its performance and characteristics are of key significance.

[0003] With the rapid development of the new energy industry, the market has increasingly higher performance requirements for high-voltage DC relays. High performance requirements also mean that the internal structure of the relay must be powerful. Therefore, when the external dimensions of the relay are fixed, the space occupied by the shell should be sacrificed as much as possible to make more space for the internal structure of the relay. This means that the shell thickness should be designed to be thinner. However, due to the thin shell thickness, in some processes after the assembly of the relay product (such as heating and baking) or when it is used in a high-temperature and harsh environment later, there will be problems with the shell being deformed by heat, such as the upper shell expanding outward and the lower shell concave inward, or vice versa. After deformation, it is easy to cause the buckle connecting the upper shell and the lower shell to fall off, and the deformation between the upper shell and the lower shell will cause a gap at the joint between the two, which seriously affects the appearance. At the same time, foreign matter such as dust can easily invade the interior of the relay, affecting the reliability of the relay. Therefore, it is necessary to improve the existing technology to overcome the defects in the existing technology. Utility Model Content

[0004] The problem to be solved by the utility model is to provide a relay housing to overcome the defects of the existing relay housing in that the buckles are easy to fall off after deformation and a gap is generated at the joint, which seriously affects the appearance and product protection.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a relay housing, comprising: a first housing and a second housing, the first housing being snap-connected to the second housing, the first housing being provided with a first pair of inserting parts, the second housing being provided with a second pair of inserting parts matching the first pair of inserting parts, and a limiting rib being provided on the inner wall of the second housing, one end of the limiting rib extending to the inner side of the second pair of inserting parts, and a gap being left between the limiting rib and the second pair of inserting parts for the first pair of inserting parts to be plugged in, the first pair of inserting parts being inserted into the gap and fitting tightly with the second pair of inserting parts.

[0006] As a further improvement of the present invention, a first clamping portion is provided on the first pair of inserting parts, and a second clamping portion is provided on the second pair of inserting parts. When the first pair of inserting parts are fully inserted into the gap, the first clamping portion and the second clamping portion are just clamped.

[0007] As a further improvement of the present invention, one of the first clamping portion and the second clamping portion is configured as a clamping slot, and the other is configured as a clamping protrusion for mutually clamping with the clamping slot.

[0008] As a further improvement of the present invention, a plurality of the limiting ribs are provided, and at least one of the limiting ribs is provided opposite to the second clamping portion.

[0009] As a further improvement of the present invention, the first shell is thinned from the outside to the inside along one circle toward the second shell to form the first plug-in portion; the second shell is thinned from the inside to the outside along one circle toward the first shell to form the second plug-in portion.

[0010] As a further improvement of the present invention, when the first pair of plug-in parts and the second pair of plug-in parts are in a plug-in state, the outer wall of the first pair of plug-in parts is tightly fitted with the inner wall of the second pair of plug-in parts, the inner wall of the first pair of plug-in parts is flush with the inner wall of the second shell, and the outer wall of the second pair of plug-in parts is flush with the outer wall of the first shell.

[0011] As a further improvement of the present invention, there are multiple limiting ribs, and the multiple limiting ribs are arranged and distributed along the inner side of the second pair of inserting parts, or the multiple limiting ribs are arranged and distributed along at least one inner side edge of the second pair of inserting parts.

[0012] As a further improvement of the present invention, a U-shaped buckle is provided on the second pair of inserting parts, and a clamping protrusion for clamping with the U-shaped buckle is provided on the outer wall of the first shell.

[0013] As a further improvement of the present invention, a connector housing is integrally provided on one side of the second shell, and a through hole for inserting a static contact of the relay is opened on the top of the second shell.

[0014] As a further improvement of the present invention, the wall thickness of the first shell and the second shell are both 1mm-3mm.

[0015] The beneficial effects of the present invention are as follows: the present invention provides a relay housing, which inserts the first pair of inserting parts of the first housing between the limiting ribs and the second pair of inserting parts of the second housing. Under the restriction of the limiting ribs and the second pair of inserting parts, even if the relay product is deformed after high-temperature baking or is used in a high-temperature harsh environment in the later stage, the first pair of inserting parts of the first housing and the second pair of inserting parts of the second housing are always fitted together, and the buckles connecting the first housing and the second housing will not fall off or the joints will not have a break, thereby ensuring the reliability of the joint position of the first housing and the second housing and the aesthetics of the product, preventing dust and other foreign matter from easily invading the interior of the relay, and ensuring the reliability of the relay operation. In addition, compared with relay products of the same specifications, the relay housing of the present invention can make the wall thickness thinner, providing more installation space for the internal mechanism of the relay as much as possible, while also reducing the material used for the relay housing and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the relay housing of the present utility model;

[0017] Figure 2 This is an exploded view of the relay housing of the present invention;

[0018] Figure 3 It is a cross-sectional view of the relay housing of the present utility model;

[0019] Figure 4 For this utility model Figure 3 Enlarged view of part A in the middle;

[0020] Figure 5 A perspective view of the second housing of the relay housing of the present invention;

[0021] Figure 6 This is a cross-sectional view of another embodiment of the relay housing of the present invention;

[0022] Figure 7 This is a front view of another embodiment of the relay housing of the present invention.

[0023] The following description is made with reference to the accompanying drawings:

[0024] 1. First shell; 101. First plug-in portion; 102. First clamping portion; 2. Second shell; 201. Second plug-in portion; 202. Position-limiting rib; 203. Gap; 204. Second clamping portion; 205. U-shaped buckle; 206. Connector housing; 207. Through hole. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0026] See Figures 1 to 5 The utility model provides a relay housing, comprising: a first housing 1 and a second housing 2, wherein the first housing 1 and the second housing 2 are fixedly connected in a snap-fit ​​manner.

[0027] The present invention does not limit the shapes of the first housing 1 and the second housing 2. The first housing 1 and the second housing 2 are assembled together to protect the internal mechanism of the relay.

[0028] In this embodiment, specifically, the first shell 1 and the second shell 2 are both substantially rectangular covers, and the first shell 1 and the second shell 2 are openly arranged toward each other; further, the first shell 1 is at the bottom and the second shell 2 is at the top.

[0029] The first shell 1 and the second shell 2 are both made of plastic by injection molding.

[0030] See Figures 3 to 5 A first plug-in portion 101 is integrally provided on the top of the first shell 1, and a second plug-in portion 201 matching the first plug-in portion 101 is integrally provided on the bottom of the second shell 2. A limiting rib 202 is also integrally provided on the inner wall of the second shell 2. The lower end of the limiting rib 202 extends vertically downward to the inner side of the second plug-in portion 201, and the lower end of the limiting rib 202 does not contact the second plug-in portion 201. A gap 203 is left between the limiting rib 202 and the second plug-in portion 201 for the first plug-in portion 101 to be plugged in. The first plug-in portion 101 is inserted into the gap 203 and fits tightly with the second plug-in portion 201.

[0031] In this way, by inserting the first pair of inserting parts 101 of the first shell 1 between the limiting rib 202 and the second pair of inserting parts 201 of the second shell 2, the first pair of inserting parts 101 of the first shell 1 and the second pair of inserting parts 201 of the second shell 2 are tightly fitted. Under the restriction of the limiting rib 202 and the second pair of inserting parts 201, even if the relay product is deformed after high-temperature baking or is used in a high-temperature harsh environment later, the first pair of inserting parts 101 of the first shell 1 and the second pair of inserting parts 201 of the second shell 2 are always fitted together, and the buckle connecting the first shell 1 and the second shell 2 will not fall off or the seam will not be broken, thereby ensuring the reliability of the joint position of the first shell 1 and the second shell 2 and the aesthetics of the product, preventing dust and other foreign matter from easily invading the interior of the relay, and ensuring the reliability of the relay operation. In addition, compared with relay products of the same specifications, the relay shell of the utility model can be made thinner in wall thickness, providing more installation space for the internal mechanism of the relay as much as possible, while also reducing the material used in the relay shell and reducing costs.

[0032] Preferably, the wall thickness of the first housing 1 and the second housing 2 is 1mm-3mm, and 1.5mm is specifically used in this embodiment. Of course, it is not limited to this. When the specifications of the relay product are larger, the wall thickness of the first housing 1 and the second housing 2 can be adaptively increased.

[0033] like Figure 2 As shown, one end of the first shell 1 facing the second shell 2 (i.e., the upper end of the first shell 1) is thinned from the outside to the inside along a circle of itself to form a first inserting portion 101. Figure 5 As shown, the second shell 2 is thinned from the inside out along one circle toward the end of the first shell 1 (i.e., the lower end of the second shell 2) to form a second plug-in portion 201. The outer dimensions of the first plug-in portion 101 are consistent with the inner dimensions of the second plug-in portion 201. When the first plug-in portion 101 and the second plug-in portion 201 are in the plugged state, the outer wall of the first plug-in portion 101 fits tightly against the inner wall of the second plug-in portion 201, the inner wall of the first plug-in portion 101 is flush with the inner wall of the second shell 2, and the outer wall of the second plug-in portion 201 is flush with the outer wall of the first shell 1.

[0034] The top outer edge of the first inserting portion 101 and the bottom inner edge of the second inserting portion 201 are both chamfered to facilitate the insertion and fitting of the two.

[0035] See Figure 2 The first pair of inserting parts 101 is provided with a plurality of first clamping parts 102 with no limit on the number, and the second pair of inserting parts 201 is provided with second clamping parts 204 with the same number and one-to-one corresponding to the first clamping parts 102. When the first pair of inserting parts 101 is fully inserted into the gap 203, the first clamping parts 102 and the second clamping parts 204 are just clamped one-to-one.

[0036] Among them, one of the first clamping portion 102 and the second clamping portion 204 is configured as a clamping slot, and the other is configured as a clamping protrusion for clamping with the clamping slot.

[0037] like Figure 4 As shown, in one embodiment of the present invention, the first clamping portion 102 is configured as a clamping protrusion, and the second clamping portion 204 is configured as a clamping slot. The clamping protrusion is clamped into the clamping slot to achieve a clamping fixed connection between the first shell 1 and the second shell 2.

[0038] like Figure 6 As shown, in another embodiment of the present invention, the first clamping portion 102 is configured as a clamping slot, and the second clamping portion 204 is configured as a clamping protrusion, which is clamped into the clamping slot, thereby also realizing a clamping fixed connection between the first shell 1 and the second shell 2.

[0039] See Figure 5There are multiple limiting ribs 202, and the multiple limiting ribs 202 are arranged along the inner side of the second pair of inserting parts 201, or the multiple limiting ribs 202 can also be arranged along one to multiple inner sides of the second pair of inserting parts 201.

[0040] It is worth mentioning that each second clamping portion 204, i.e., the inner side of the clamping slot, is provided with a limiting rib 202 opposite thereto. Under the restriction of the limiting rib 202, the first clamping portion 102 can be further prevented from escaping from the second clamping portion 204, thereby further increasing the reliability of the snap connection between the first shell 1 and the second shell 2.

[0041] See Figure 1 A connector housing 206 is integrated into one side of the second housing 2 for connecting to an external electrical connector. Two through-holes 207 are provided at the top of the second housing 2 for inserting the relay's static contacts, and a barrier is provided between the two through-holes 207 to increase creepage distance.

[0042] like Figure 7 As shown, in another embodiment of the present invention, the snap-fit ​​structure is modified. Specifically, the second inserting portion 201 is integrally provided with a plurality of U-shaped snap-fits 205 along its bottom edge, and the outer wall of the first housing 1 is provided with latching protrusions for interlocking with the U-shaped snap-fits 205. When the first inserting portion 101 is fully inserted into the gap 203, the latching protrusions and the U-shaped snap-fits 205 engage in a one-to-one correspondence, similarly achieving a snap-fit ​​fixed connection between the first housing 1 and the second housing 2.

[0043] Thus, it can be seen that the relay housing of the present invention inserts the first pair of inserting parts 101 of the first housing 1 between the limiting rib 202 and the second pair of inserting parts 201 of the second housing 2, so that the first pair of inserting parts 101 of the first housing 1 and the second pair of inserting parts 201 of the second housing 2 fit tightly together. Under the restriction of the limiting rib 202 and the second pair of inserting parts 201, even if the relay product is deformed after high-temperature baking or is used in a high-temperature harsh environment later, the first pair of inserting parts 101 of the first housing 1 and the second pair of inserting parts 201 of the second housing 2 are always in contact with each other, and the buckle connecting the first housing 1 and the second housing 2 will not fall off or the joint will not be broken, thereby ensuring the reliability of the joint position of the first housing 1 and the second housing 2 and the aesthetics of the product, preventing dust and other foreign matter from easily invading the interior of the relay, and ensuring the reliability of the relay operation. In addition, compared with relay products of the same specifications, the relay housing of the present invention can be made thinner in wall thickness, providing more installation space for the internal mechanism of the relay as much as possible, while also reducing the material used in the relay housing and reducing costs.

[0044] In the above description, many specific details are set forth in order to fully understand the present invention. However, the above description is only a preferred embodiment of the present invention. The present invention can be implemented in many other ways different from those described herein, so the present invention is not limited by the specific implementation disclosed above. At the same time, any person skilled in the art can use the above-disclosed methods and technical contents 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 embodiment of equivalent changes. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

Claims

1. A relay housing, comprising a first housing (1) and a second housing (2), wherein the first housing (1) and the second housing (2) are snap-connected, characterized in that: The first shell (1) is provided with a first plug-in portion (101), the second shell (2) is provided with a second plug-in portion (201) matching the first plug-in portion (101), and a limiting rib (202) is provided on the inner wall of the second shell (2), one end of the limiting rib (202) extends to the inner side of the second plug-in portion (201), and a gap (203) is left between the first plug-in portion (101) and the second plug-in portion (201) for plugging in the first plug-in portion (101), and the first plug-in portion (101) is inserted into the gap (203) and fits tightly with the second plug-in portion (201).

2. The relay housing according to claim 1, wherein: The first pair of inserting parts (101) is provided with a first clamping part (102), and the second pair of inserting parts (201) is provided with a second clamping part (204). When the first pair of inserting parts (101) is completely inserted into the gap (203), the first clamping part (102) and the second clamping part (204) are just clamped.

3. The relay housing according to claim 2, wherein: One of the first clamping portion (102) and the second clamping portion (204) is configured as a clamping slot, and the other is configured as a clamping protrusion for clamping with the clamping slot.

4. The relay housing according to claim 2, wherein: A plurality of the limiting ribs (202) are provided, and at least one of the limiting ribs (202) is arranged opposite to the second clamping portion (204).

5. The relay housing according to claim 1, wherein: One end of the first shell (1) facing the second shell (2) is thinned along its own circle from the outside to the inside to form the first plug-in portion (101); and one end of the second shell (2) facing the first shell (1) is thinned along its own circle from the inside to the outside to form the second plug-in portion (201).

6. The relay housing according to claim 5, characterized in that: When the first pair of plug-in parts (101) and the second pair of plug-in parts (201) are in a plugged-in state, the outer wall of the first pair of plug-in parts (101) is tightly fitted with the inner wall of the second pair of plug-in parts (201), the inner wall of the first pair of plug-in parts (101) is flush with the inner wall of the second shell (2), and the outer wall of the second pair of plug-in parts (201) is flush with the outer wall of the first shell (1).

7. The relay housing according to claim 5, characterized in that: The limiting ribs (202) are provided in plurality, and the plurality of limiting ribs (202) are arranged and distributed along a circle of the inner side of the second inserting portion (201), or the plurality of limiting ribs (202) are arranged and distributed along at least one inner side edge of the second inserting portion (201).

8. The relay housing according to claim 1, wherein: A U-shaped buckle (205) is provided on the second inserting portion (201), and a clamping protrusion for clamping with the U-shaped buckle (205) is provided on the outer wall of the first shell (1).

9. The relay housing according to claim 1, wherein: A connector housing (206) is integrally provided on one side of the second housing (2), and a through hole (207) for a static contact of a relay to pass through is provided on the top of the second housing (2).

10. The relay housing according to claim 1, wherein: The wall thickness of the first shell (1) and the second shell (2) are both 1 mm to 3 mm.

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