Relay and electric system comprising same

Abstract

The utility model relates to a relay and an electrical system including the relay, the relay comprises a relay main body and a housing, the housing is provided with at least one pair of buckles arranged oppositely, the buckles are used for installing the relay on a guide rail, at least one buckle is connected with a flange, and the flange is connected with the relay main body. The relay is installed and fixed in a flange connection mode and / or a guide rail connection mode. According to the relay, the buckle and the flange are arranged on the relay shell, a guide rail installation mode or a flange connection mode can be adopted, and a conventional mode of installing the relay by using a socket in a matched mode is omitted, so that the problem that the service life of the relay is shortened or even fails due to high temperature is effectively solved, and the installation mode is more flexible.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric appliance, especially a relay and an electric system comprising the relay. BACKGROUND

[0002] Relays are widely used in many fields, including industrial automation, transportation, power systems, communication equipment, home appliances and electronic products, automotive electronics, medical devices, agricultural equipment, security equipment, etc. Generally, the electrical connection and fixed installation of a relay are concentrated together, for example, the relay is installed on a socket, as shown in Figure 1 The bottom of the relay 100 is configured to match the structure of the socket 200, and the pins of the relay 100 are inserted into the clamps inside the socket 200. The specific installation structure can be referred to Chinese utility model patent CN211743059U. In this way, the temperature rise at the pins of the relay depends on: (1) the clamping force and conductivity of the clamp. The greater the clamping force, the larger the contact surface between the pin and the clamp, and the lower the temperature rise rate. The higher the conductivity of the clamp, the lower the temperature rise rate. The clamping force of the clamp depends on the production process of the clamp. The higher the conductivity of the clamp, the higher the material cost; (2) the clamp is installed inside the socket, and the heat dissipation effect is poor.

[0003] For high-load relays, due to the relatively large load current, the heat generated by the relay during operation is also relatively large. If a matching socket is used, high temperature is likely to occur at the contact position between the socket clamp and the relay terminal. Under continuous high temperature, it may affect the service life of the relay, or it may cause the plastic parts of the socket and the relay to melt, the relay to loosen, and the relay to malfunction or even pose a danger.

[0004] Therefore, it is of practical significance to solve the problem of high temperature caused by the use of a relay in a matching socket, which shortens the service life of the relay or even causes it to fail. For this reason, some relays are installed on a guide rail to replace the socket installation method, for example, Chinese utility model patent CN217280599U discloses a relay socket guide rail installation structure, which comprises a shell, a guide rail limiting block is fixed on the shell, a locking buckle is arranged on the shell, a guide rail mounting groove is arranged on the shell, the guide rail limiting block and the locking buckle are respectively located on both sides of the guide rail mounting groove and at least partially protrude from the side wall of the guide rail mounting groove to limit the guide rail installed in the guide rail mounting groove, and a boss protruding from the bottom surface of the guide rail mounting groove is arranged near the guide rail limiting block.

[0005] However, the above structure requires sufficient space on the relay shell to design the guide rail mounting groove, which limits the application scenarios. In certain installation situations, if the distance between the installation panel and the relay is limited, the above guide rail installation structure cannot be used. Utility model content

[0006] In view of the above problems, the utility model provides a kind of relay and the electric system including relay, relay cancels the use of socket, the electric connection and fixed installation part of relay are separated, fixed installation part can be installed on guide rail by buckle, it can also be connected by flange, and electric connection part only needs the pin of relay terminal to be connected with quick-connect terminal, pin and quick-connect terminal are exposed, and heat dissipation effect is good, to further solve the problem that high temperature is generated when relay is used with socket, which shortens the service life of relay or even fails. At the same time, for the scene that the space for fixing and installing relay is limited, the relay can be directly connected to the panel by flange, so that the connection mode of relay is more flexible.

[0007] To solve this technical problem, the utility model takes the following scheme:

[0008] A kind of relay, including relay main body and shell, at least one pair of opposite buckle is provided on the shell, the buckle is used to install the relay on a guide rail, wherein at least one of the buckle is connected flange, and the relay is installed and fixed by flange connection and / or guide rail connection mode.

[0009] Further, the buckle is arranged on the shell opposite to the terminal of the relay, the buckle includes opposite fixed buckle and sliding buckle, wherein the fixed buckle is fixedly connected with the shell, and the fixed buckle and the shell form a clamping groove for clamping the guide rail, and the sliding buckle is connected with a sliding block and an elastic member, and the elastic member applies a force to the sliding block and the sliding buckle towards the guide rail.

[0010] Further, the fixed buckle includes a first clamping block and a second clamping block fixedly connected to one side of the shell, and the sliding buckle on the opposite side forms a three-point fixing with the first clamping block and the second clamping block.

[0011] Further, the first clamping block and the second clamping block are connected to the flange, and the mounting shaft of the flange is perpendicular to the connecting line between the first clamping block and the second clamping block.

[0012] Further, a limiting block is arranged on the shell at a position corresponding to the fixed buckle.

[0013] Further, the sliding buckle is fixedly connected with the sliding block, the free end of the elastic member is fixedly connected with the sliding block, and the other end is fixedly connected with the shell.

[0014] Further, the elastic member includes at least one compression block, and the compression block includes an "S"-shaped elastic sheet.

[0015] Further, the elastic member comprises at least one pair of symmetrically arranged compression blocks, and the sliding block is located between the two compression blocks, wherein the sliding block comprises a block body, and a groove is arranged on the surface of the block body, and a cross beam is arranged on the top of the groove.

[0016] Further, the elastic member is connected with at least one flange, and the mounting shaft of the flange is perpendicular to the reciprocating direction of the elastic member.

[0017] Based on the same inventive concept, the utility model also protects an electric system, which is provided with at least one panel and / or guide rail for mounting the relay.

[0018] By adopting the foregoing technical scheme, the utility model improves the shell of the relay, increases the buckle on the shell, does not need to use the matched socket, and facilitates the installation and disassembly of the guide rail.

[0019] Further, the utility model also provides the flange connected with the buckle, integrates the flange installation and the guide rail installation, facilitates the flexible use of the flange connection and the guide rail installation of the customer in two modes, and expands the applicable scene of the relay installation. DETAILED DESCRIPTION

[0020] Figure 1 is a schematic diagram of the prior art relay;

[0021] Figure 2 is a schematic diagram of the three-dimensional structure of the relay provided by the embodiment 1 of the utility model;

[0022] Figure 3 is a side view of the relay provided by the embodiment 1 of the utility model;

[0023] Figure 4 is a top view of the relay provided by the embodiment 1 of the utility model;

[0024] Figure 5 is a schematic diagram of the three-dimensional structure of the relay in the installation state from one perspective provided by the embodiment 1 of the utility model;

[0025] Figure 6 is a schematic diagram of the three-dimensional structure of the relay in the installation state from another perspective provided by the embodiment 1 of the utility model;

[0026] Figure 7 is a side view of the relay in the installation state from one perspective provided by the embodiment 1 of the utility model;

[0027] Figure 8 is a side view of the relay in the installation state from another perspective provided by the embodiment 1 of the utility model;

[0028] Figure 9is a top view of the mounting state of the relay according to embodiment 1 of the present application. DETAILED DESCRIPTION

[0029] The technical solutions of the present application will be described clearly and completely in combination with the drawings and specific embodiments below. However, those skilled in the art will understand that the following described embodiments are part of the embodiments of the present application, rather than all the embodiments, and are only used to illustrate the present application, and should not be regarded as limiting the scope of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application. The specific conditions not mentioned in the embodiments are carried out according to the conventional conditions or the conditions recommended by the manufacturer. The reagents or instruments not mentioned by the manufacturer are all conventional products that can be purchased on the market.

[0030] In the description of the present application, it should be pointed out that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the device or element indicated to have a specific orientation, to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present application, it should be pointed out that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] Embodiment 1

[0033] Reference Figures 2-9The relay comprises a relay main body 1 and a shell 2, and the shell 2 is provided with at least one pair of oppositely arranged buckles for mounting the relay on a guide rail. For example, two buckles can be arranged to form a two-point fixed mounting, or three buckles can be arranged to form a three-point fixed mounting, and the latter has better mounting stability. At least one of the buckles is connected to a flange, and the relay can be fixed by flange connection, or mounted and fixed by buckle connection with the guide rail, or by using both methods. For example, when a plurality of relays need to be installed in a row, the extension space of the guide rail is limited, and the distance between the relay and the mounting panel at the local position is limited and insufficient to accommodate the guide rail. Therefore, the relay can be mounted and fixed by flange connection to match the insufficient installation of the guide rail.

[0034] In the embodiment, the buckle is arranged on the shell 2 opposite to the wiring end of the relay, and the shell 2 covers the relay main body 1 with the wiring end exposed at the bottom. In the prior art, the electrical connection and mounting are usually concentrated on one end, which has the problem of overheating. There are also mounting structures on the side adjacent to the electrical connection, which can increase the heat dissipation effect. However, when the electrical connection part accumulates heat to a certain extent, the mounting structure on the side will be damaged once the electrical connection part is burned, and there is still a risk of loose mounting. In the embodiment, the part for mounting and fixing is separated from the wiring end for electrical connection and located at opposite positions. On the one hand, the electrical connection part can use more reliable wiring methods such as welding or copper screw locking; on the other hand, the mounting and fixing part is away from the electrical connection part and is not easily affected by the heat of the electrical connection part. Even if the electrical connection part is burned due to overheating, it is difficult to cause the mounting of the relay to loosen, thereby improving the safety.

[0035] Specifically, as shown in Figure 2 and 3 , the buckle comprises a fixed buckle 3 and a sliding buckle 4, the fixed buckle 3 is fixedly connected to the shell 2, and the fixed buckle 3 and the shell 2 form a clamping groove 21 for clamping the guide rail. The clamping groove 21 can be a wedge-shaped clamping groove or an arc-shaped clamping groove.

[0036] The sliding buckle 4 is connected to the sliding block 6 and the elastic member 7, and the elastic member 7 applies a force to the sliding block 6 and the sliding buckle 4 towards the guide rail. The force can be changed by changing the deformation of the elastic member 7 to change the position of the sliding buckle 4 and the sliding block 6 to match the installation and dismounting needs of the guide rail. The combination of the fixed buckle and the sliding buckle facilitates the selection of the buckle spacing suitable for the installation of the guide rail.

[0037] It is understood that in other embodiments, two relatively arranged sliding latches 4 or two relatively arranged fixed latches 3 can also be used to install the relay. However, the combination of fixed latches and sliding latches can more easily change the relative position of the latches and the guide rail, making it easier to install and remove the relay on the guide rail.

[0038] Specifically, the fixing buckle 3 may include one, two, or more buckles to match the sliding buckle on the opposite side to form a two-point fixing, a three-point fixing, or a multi-point fixing.

[0039] refer to Figure 4 In this embodiment, the fixing buckle 3 includes a first locking block 31 and a second locking block 32 fixedly connected to one side of the outer casing 2. The two are spaced apart, thereby locking one side of the guide rail into the two slots 21 formed by the first locking block 31, the second locking block 32 and the outer casing. The sliding buckle 4 located on the opposite side forms a three-point fixation with the first locking block 31 and the second locking block 32. This three-point fixation has good firmness.

[0040] For accurate positioning, limiting blocks 22 are respectively provided on the outer shell 2 at the corresponding positions of the first locking block 31 and the second locking block 32. The limiting blocks 22 can be rectangular or triangular. When one side of the guide rail enters the slot 21, the protruding surface of the limiting block 22 abuts against the bottom surface of the guide rail to prevent the guide rail from sliding.

[0041] In this embodiment, a flange 5 is connected to the first locking block 31 and the second locking block 32. The flange 5 is fixedly connected to the outer shell 2. The flange 5 has a through hole 51 located between the first locking block 31 and the second locking block 32, such that the mounting axis of the flange 5 is perpendicular to the line connecting the first locking block 31 and the second locking block 32. Screws or bolts can be passed through the through hole 51 to fix the relay to a panel. This panel can be connected to a guide rail or can be any flat plate separate from the guide rail. When the installation location is not suitable for setting a guide rail, or when a row of relays needs to be installed but the guide rail cannot be accommodated in a certain area, a flange connection can be used for installation and fixation. It is understood that when the panel is connected to the guide rail, the added flange connection can enhance the fixing strength of the relay, if such fixing strength is required.

[0042] The sliding buckle 4 is fixedly connected to the slider 6, and the free end of the elastic element 7 is fixedly connected to the slider 6, while the other end is fixedly connected to the housing 2. This forms a groove between the sliding buckle 4 and the housing 2 to accommodate one side of the guide rail. This groove mates with the groove 21 formed by the fixed buckle 3 on the opposite side. The two sides of a U-shaped or I-shaped guide rail are respectively located within the two grooves, thus mounting the relay on the guide rail. During installation, the elastic element 7 moves the slider 6 and the sliding buckle 4 to change the groove spacing to match the size of the guide rail to be installed.

[0043] Better, such as Figure 4 As shown, the sliding buckle 4 and the slider 6 are located on the central axis of the line connecting the first block 31 and the second block 32 to improve the stability of the relay mounted on the guide rail.

[0044] The slider 6 is connected to the elastic element 7. The elastic element 7 applies a force to the slider 6 in a direction towards the guide rail, thus enabling the installation, fixing, and removal of the relay. For details, please refer to... Figures 5-9 Before the guide rail is installed, push the slider 6 to move away from the fixed buckle 3, increasing the distance between the fixed buckle 3 and the sliding buckle 4, making it easier to place the guide rail 9. After the guide rail 9 is placed, remove the force applied to the slider 6. Under the reset action of the elastic element 7, the slider 6 drives the sliding buckle 4 to move closer to the fixed buckle 3, reducing the distance between the fixed buckle 3 and the sliding buckle 4, thereby fixing the relay on the guide rail 9.

[0045] refer to Figure 4 The elastic element 7 includes at least one compression block, which contains an "S"-shaped elastic sheet, such as a plastic sheet or a spring sheet. In this embodiment, the elastic element 7 includes two pairs of symmetrically arranged first compression blocks 71 and second compression blocks 72. The slider 6 is located between the first compression blocks 71 and the second compression blocks 72, so that the reciprocating motion of the elastic element 7 remains linear and is not easily deviated. When the slider 6 moves, it follows the reciprocating motion direction of the elastic element 7, which not only facilitates installation but also improves stability after installation.

[0046] This embodiment is merely exemplary, and the elastic element is not limited to this structure. Those skilled in the art should realize that the elastic element can also be a spring, and the compression block can be a pair or more, depending on the magnitude of the elastic force and the design space.

[0047] In this embodiment, the slider 6 is located between the first compression block 71 and the second compression block 72. The slider 6 includes a block 61, and the surface of the block 61 is provided with a groove 62. A crossbeam 63 is provided on the top of the groove 62. By applying force through the crossbeam 63, or by acting within the groove 62, the slider 6 can be pushed to move, so as to facilitate the opening of the sliding buckle 4 during installation.

[0048] In the embodiment, the elastic member 7 is further connected with a flange 8, the flange 8 is fixedly connected with the shell 2, the flange 8 is provided with a through hole 81, and the mounting shaft of the flange is perpendicular to the reciprocating direction of the elastic member 7. Specifically, the other end of the elastic member 7 away from the free end is fixedly connected with the flange 8. It can be understood that when the opposite fixed buckle 3 is connected with the flange 5, the flange 8 is not necessary, and when the flange 8 is arranged, a screw or a bolt can be used to pass through the through hole 81 to realize the connection of the relay flange to the panel, and the panel can be connected with the guide rail or be any flat piece separated from the guide rail. When the installation position is not suitable for arranging the guide rail or when a row of relays need to be installed and the local part cannot accommodate the guide rail, the flange connection mode can be used for installation and fixation. When the panel is connected with the guide rail, the additional flange connection can enhance the fixation strength of the relay, if such fixation strength is needed. In other embodiments, the elastic member 7 can be further connected with two flanges 8 arranged on both sides of the elastic member 7 to improve the stability of the installation.

[0049] In the embodiment, the sliding buckle 4, the sliding block 6 and the elastic member 7 are integrally formed, and a sliding block for the guide rail installation is not needed, which is beneficial to improve the convenience and firmness of the installation.

[0050] The electrical system using the relay can be provided with a panel for matching the flange on the relay to be fixed in the flange connection mode, or can be provided with a guide rail for matching the buckle on the relay to be installed in the clamping mode, and the two modes can be combined to realize the flexible installation of the relay.

[0051] Although the embodiments of the utility model have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as the limitation of the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above embodiments in the range of the utility model without departing from the principles and purposes of the utility model.

Claims

1. A relay comprising a relay main body and a housing, characterized by: At least one pair of buckles are arranged on the shell oppositely, and the buckles are used to mount the relay on a guide rail, wherein at least one of the buckles is connected with a flange, and the relay is mounted and fixed by the flange connection and / or guide rail connection.

2. The relay according to claim 1, characterized in that: The buckles are arranged on the shell opposite to the wiring terminal of the relay, and the buckles comprise a fixed buckle and a sliding buckle arranged oppositely, wherein the fixed buckle is fixedly connected with the shell, and the fixed buckle and the shell form a clamping groove for clamping the guide rail, and the sliding buckle is connected with a sliding block and an elastic member, and the elastic member applies a force to the sliding block and the sliding buckle towards the guide rail.

3. The relay of claim 2, wherein: The fixed buckle comprises a first clamping block and a second clamping block fixedly connected with a side edge of the shell, and the sliding buckle oppositely arranged forms a three-point fixing with the first clamping block and the second clamping block.

4. The relay of claim 3, wherein: The first clamping block and the second clamping block are connected with the flange, and the mounting shaft of the flange is perpendicular to the connecting line between the first clamping block and the second clamping block.

5. A relay according to any one of claims 2 to 4, characterised in that: A limiting block is arranged on the shell at a position corresponding to the fixed buckle.

6. The relay of claim 2, wherein: The sliding buckle is fixedly connected with the sliding block, the free end of the elastic member is fixedly connected with the sliding block, and the other end is fixedly connected with the shell.

7. The relay of claim 6, wherein: The elastic member comprises at least one compression block, and the compression block comprises an "S"-shaped elastic sheet.

8. The relay of claim 7, wherein: The elastic member comprises at least one pair of symmetrically arranged compression blocks, and the sliding block is located between the two compression blocks, and the sliding block comprises a block body, and a groove is arranged on the surface of the block body, and a cross beam is arranged on the top of the groove.

9. A relay according to any one of claims 6 to 8, characterised in that: The elastic member is connected with at least one flange, and the mounting shaft of the flange is perpendicular to the reciprocating direction of the elastic member.

10. An electrical system characterized by: The electrical system is provided with at least one panel and / or guide rail for mounting the relay according to any one of claims 1-9.

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