Relay for starting motor

Abstract

The utility model discloses a relay for starting a motor, which comprises a relay body and a heat dissipation assembly, the relay body comprises a shell, a cover plate is detachably mounted on the shell, and a mounting plate is mounted at the bottom of the shell; the heat dissipation assembly comprises an inner shell, the inner shell is arranged in the outer shell in an integrated forming mode, a cavity is formed between the outer side wall of the inner shell and the inner side wall of the outer shell, the cavity is filled with heat absorption materials, and a plurality of heat conduction columns are fixedly connected to the side wall of the inner shell in a penetrating mode. According to the utility model, the heat radiation assembly is arranged, so that the heat generated by the electric appliance element can be directly transmitted through the heat conduction element when the relay is used, and the heat in the relay is absorbed by the heat absorption material and then is transmitted to the outside through the heat conduction rod to be released; therefore, the explosion-proof electric appliance element can release internal heat under the condition that the inside and the outside are isolated, and the relay is safe to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of relays, and in particular relates to a relay for starting a motor. Background Art

[0002] The main function of the electrical starter relay is to provide the necessary current during the equipment startup process to ensure that the equipment can start smoothly and enter the normal operating state. The motor relay with common pole is a relay used for electrical starter. For special places such as mines, electrical equipment is flameproof to ensure safety, so the relay is also flameproof. The flameproof relay isolates the inside of the equipment from the external environment through a solid shell. Even if an explosion occurs inside, it will not spread to the external environment.

[0003] For motors that need to be started and stopped frequently, the inverter will be used continuously, so the electrical components in the inverter will continue to heat up. Since the flameproof relay is isolated from the outside, the heat dissipation performance inside the relay is poor, so it is not convenient for the electrical components inside the relay to dissipate heat, which makes the use of the relay a safety hazard.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0005] The utility model aims to provide a motor starting relay, which can solve the problem that the flameproof relay has poor heat dissipation, resulting in potential safety hazards in the use of the relay.

[0006] In order to achieve the above purpose, the technical solution provided by a specific embodiment of the utility model is as follows:

[0007] A motor starting relay, comprising:

[0008] The relay body comprises a housing, on which a cover plate is detachably mounted, and the cover plate is easy to disassemble and assemble, so that the electrical components in the housing can be easily maintained and replaced. A mounting plate is mounted at the bottom of the housing, and the housing can be easily mounted through the mounting plate.

[0009] The heat dissipation component includes an inner shell, and the inner shell is used to install the electrical components inside the relay. The inner shell is arranged inside the outer shell by an integral molding method, and a chamber is formed between the outer wall of the inner shell and the inner wall of the outer shell, and the chamber is filled with a heat-absorbing material. Since the inner shell is used to install the electrical components, the heat generated by the electrical components when the relay is used is in the inner shell, and the heat is transferred to the chamber through the inner shell so that the heat-absorbing material absorbs the heat, thereby absorbing the heat in the inner shell, and then adjusting the temperature in the inner shell. The heat-absorbing material adopts a material with good heat absorption performance to absorb heat. A plurality of heat-conducting columns are fixedly connected to the side wall of the inner shell in a penetrating manner. In order to allow the heat in the inner shell to be transferred to the chamber, the heat in the inner shell can be transferred to the chamber through the heat-conducting columns so that the heat-absorbing material absorbs the heat, thereby absorbing the heat in the inner shell. A plurality of heat-conducting rods are installed in the chamber. When the heat-absorbing material absorbs heat, the heat is transferred to the outside through the heat-conducting rods, so that the heat-absorbing material can continuously absorb the heat generated by the electrical components when the relay is in use through the heat-conducting columns, thereby making the temperature inside the relay normal, so as to ensure that the flameproof relay is isolated from the outside and the internal heat is released, thereby ensuring the safety of the relay when in use.

[0010] In one or more embodiments of the present invention, a mounting groove matching the mounting plate is provided at the bottom of the shell, and the mounting plate is sleeved in the mounting groove so that the mounting plate is stable when installed at the bottom of the shell, so that the shell can be stabilized after installation through the mounting plate.

[0011] In one or more embodiments of the utility model, the ends of the mounting plate are provided with mounting holes, through which the mounting plate is fixed to the mounting member. The mounting plate and the housing are threadedly connected with a first fixing screw, through which the mounting plate is fixed to the bottom of the housing.

[0012] In one or more embodiments of the present invention, a plurality of contact sheets are mounted on the cover plate, and a plurality of studs are integrally formed on the cover plate.

[0013] In one or more embodiments of the utility model, a plurality of second fixing screws are installed between the cover plate and the outer shell, and the plurality of second fixing screws are respectively arranged at the four corners of the cover plate. The second fixing screws are used to fix the cover plate to the outer shell, and the cover plate is easy to disassemble and assemble because the second fixing screws are easy to disassemble and assemble.

[0014] In one or more embodiments of the utility model, the outer shell is made of heat-insulating material. Since the environments in which flameproof relays are used vary greatly, in order to prevent the temperature of the outside world from being transferred to the outer shell when the outside world is at high temperature, the outer shell is made of heat-insulating material. The inner shell is made of heat-conductive material so that the heat emitted by the electrical components in the inner shell can be transferred to the chamber through the inner shell.

[0015] In one or more embodiments of the present invention, the heat absorbing material is a graphite material, so that the heat transferred from the inner shell is absorbed by the graphite. The graphite material is provided in a powder form, so that the heat transfer between the graphites is faster.

[0016] In one or more embodiments of the utility model, one end of the plurality of heat-conducting columns is placed on the inner side of the inner shell. In order to improve the heat conduction efficiency of the heat-conducting column to the heat generated by the electrical components, one end of the heat-conducting column is placed on the inner side of the inner shell, so that a heat-conducting element can be set up between the end of the heat-conducting column placed in the inner shell and the electrical components, and then the heat generated by the electrical components can be directly transferred to the heat-conducting column through the heat-conducting element, so that the heat generated by the electrical components can be directly conducted. At the same time, multiple heat-conducting columns are provided, and the heat-conducting elements can be set up according to the distribution of the heating electrical components installed in the inner shell. The other ends of the plurality of heat-conducting columns are placed in the chamber, and the heat generated by the electrical components is transferred to the heat-conducting column through the heat-conducting element, and the heat-conducting column can transfer the heat to the chamber so that the heat-absorbing material absorbs the heat. One end of the heat-conducting column placed in the chamber is fixedly connected with a heat-conducting plate. In order for the heat-absorbing material to quickly absorb the heat transferred by the heat-conducting element, a heat-conducting plate is provided at one end of the heat-conducting column placed in the chamber to increase the efficiency of heat transfer.

[0017] In one or more embodiments of the utility model, a plurality of the heat-conducting rods are installed on the cover plate in a through manner, the upper end of the heat-conducting rod is fixedly connected to the bottom of the contact sheet, and the lower end of the heat-conducting rod is placed in a position close to the lower side of the chamber. The heat-conducting rod transfers the heat absorbed by the heat-absorbing material. Since the contact sheet is connected to the heat-conducting rod, the heat-conducting rod can transfer the heat to the contact sheet, so that the heat can be released through the contact sheet. At the same time, in order to improve the heat transfer effect of the contact sheet, the contact sheet is made of copper material. In order to improve the heat transfer of the heat-conducting rod to the heat-absorbing material, the lower end of the heat-conducting rod is set in a position close to the lower side of the chamber so as to increase the contact area between the heat-conducting rod and the heat-absorbing material.

[0018] In one or more embodiments of the present invention, a sealing gasket is provided at the bottom of the cover plate, and the sealing gasket is sleeved on the chamber. The sealing gasket can seal the chamber when the cover plate is installed on the housing.

[0019] Compared with the prior art, the utility model is provided with a heat dissipation component, so that the heat generated by the electrical components when the relay is in use will be directly transferred through the heat-conducting element, so that the heat in the relay is absorbed by the heat-absorbing material, and then transferred to the outside through the heat-conducting rod for release, so that the flameproof electrical components can release the internal heat while being isolated from the inside and the outside, thereby making the use of the relay safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a front view of a motor starting relay in one embodiment of the utility model;

[0022] Figure 2 A three-dimensional diagram of a motor starting relay in one embodiment of the utility model Figure 1 ;

[0023] Figure 3 A three-dimensional diagram of a motor starting relay in one embodiment of the utility model Figure 2

[0024] Figure 4 A cross-sectional view of a motor starting relay in one embodiment of the utility model;

[0025] Figure 5 It is a cross-sectional view of a motor starting relay in one embodiment of the utility model;

[0026] Figure 6 It is a schematic diagram of an inner shell in one embodiment of the utility model.

[0027] Description of main reference numerals:

[0028] 1-relay body, 11-housing, 12-cover, 13-mounting slot, 14-mounting plate, 15-first fixing screw, 16-contact sheet, 17-stud, 18-second fixing screw, 2-heat dissipation assembly, 21-inner housing, 22-chamber, 23-heat absorbing material, 24-heat conducting column, 25-heat conducting plate, 26-heat conducting rod, 27-sealing pad. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0030] like Figure 1~Figure 5 As shown, a motor starting relay in one embodiment of the utility model includes a relay body 1 and a heat dissipation component 2.

[0031] like Figure 1~Figure 5 As shown, the relay body 1 includes a housing 11, on which a cover plate 12 is detachably mounted, and the cover plate 12 is easy to disassemble and install, so that the electrical components in the housing 11 can be easily maintained and replaced. A mounting plate 14 is mounted at the bottom of the housing 11, and the housing 11 can be easily mounted through the mounting plate 14.

[0032] like Figure 3 As shown, a mounting groove 13 matching with the mounting plate 14 is provided at the bottom of the housing 11, and the mounting plate 14 is sleeved in the mounting groove 13, so that the mounting plate 14 is stable when installed at the bottom of the housing 11, so that the housing 11 is stable after installation through the mounting plate 14.

[0033] like Figure 3 As shown, the ends of the mounting plate 14 are provided with mounting holes, through which the mounting plate 14 is fixed to the mounting member. The mounting plate 14 and the housing 11 are threadedly connected with a first fixing screw 15, through which the mounting plate 14 is fixed to the bottom of the housing 11.

[0034] like Figure 2 As shown, a plurality of contact sheets 16 are mounted on the cover plate 12 , and a plurality of studs 17 are integrally formed on the cover plate 12 .

[0035] like Figure 2 As shown, a plurality of second fixing screws 18 are installed between the cover plate 12 and the housing 11. The plurality of second fixing screws 18 are respectively arranged at the four corners of the cover plate 12. The second fixing screws 18 are used to fix the cover plate 12 on the housing 11. The easy disassembly and assembly of the second fixing screws 18 makes the disassembly and assembly of the cover plate 12 convenient.

[0036] like Figure 4~Figure 6As shown, the heat dissipation assembly 2 includes an inner shell 21, and the inner shell 21 is used to install the electrical components inside the relay. The inner shell 21 is arranged inside the outer shell 11 by an integral molding method, and a chamber 22 is formed between the outer wall of the inner shell 21 and the inner wall of the outer shell 11, and the chamber 22 is filled with a heat-absorbing material 23. Since the inner shell 21 is used to install the electrical components, the heat generated by the electrical components when the relay is used is in the inner shell 21, and the heat is transferred to the chamber 22 through the inner shell 21, so that the heat-absorbing material 23 absorbs the heat, thereby absorbing the heat in the inner shell 21, and then adjusting the temperature in the inner shell 21. The heat-absorbing material 23 uses a material with good heat absorption performance to absorb heat. A plurality of heat-conducting columns 24 are fixedly connected to the side wall of the inner shell 21 in a penetrating manner. In order to transfer the heat in the inner shell 21 to the chamber 22, the heat in the inner shell 21 can be transferred to the chamber 22 through the plurality of heat-conducting columns 24, so that the heat-absorbing material 23 absorbs the heat, thereby absorbing the heat in the inner shell 21. A plurality of heat-conducting rods 26 are installed in the chamber 22. When the heat-absorbing material 23 absorbs the heat, the heat is transferred to the outside through the heat-conducting rods 26, so that the heat-absorbing material 23 can continue to absorb the heat generated by the electrical components when the relay is used through the heat-conducting columns 24, so that the temperature inside the relay is normal, so as to ensure that the flameproof relay is isolated from the outside and the internal heat is released, thereby ensuring the safety of the relay when it is used.

[0037] Preferably, the outer shell 11 is made of heat-insulating material. Since the environments in which flameproof relays are used vary greatly, when the outside is at high temperature, in order to prevent the outside temperature from being transferred to the outer shell 11, the outer shell 11 is made of heat-insulating material. The inner shell 21 is made of heat-conductive material so that the heat emitted by the electrical components in the inner shell 21 can be transferred to the chamber 22 through the inner shell 21.

[0038] Preferably, the heat absorbing material 23 is a graphite material, so that the graphite absorbs the heat transferred from the inner shell 21. The graphite material is provided in a powder form, so that the heat transfer between the graphites is faster.

[0039] like Figure 4 and Figure 5As shown, one end of a plurality of heat-conducting columns 24 is placed on the inner side of the inner shell 21. In order to improve the heat-conducting efficiency of the heat-conducting columns 24 for the heat generated by the electrical components, one end of the heat-conducting columns 24 is placed on the inner side of the inner shell 21, so that a heat-conducting element can be set up between the end of the heat-conducting column 24 placed in the inner shell 21 and the electrical components, and then the heat generated by the electrical components can be directly transferred to the heat-conducting column 24 through the heat-conducting element, so that the heat-conducting column 24 is transferred to the chamber 22, so that the heat generated by the electrical components can be directly conducted. At the same time, multiple heat-conducting columns 24 are provided, and the heat-conducting elements can be set up according to the distribution of the heat-generating electrical components installed in the inner shell 21. The other ends of the plurality of heat-conducting columns 24 are placed in the chamber 22, and the heat generated by the electrical components is transferred to the heat-conducting columns 24 through the heat-conducting elements, and the heat-conducting columns 24 can transfer the heat to the chamber 22 so that the heat-absorbing material 23 absorbs the heat. One end of the heat-conducting column 24 placed in the chamber 22 is fixedly connected to a heat-conducting plate 25. In order for the heat-absorbing material 23 to quickly absorb the heat transferred from the heat-conducting element, a heat-conducting plate 25 is provided at one end of the heat-conducting column 24 placed in the chamber 22 to increase the efficiency of heat transfer.

[0040] It should be noted that, since a heat-conducting element is provided between the heat-conducting column 24 and the heat-generating electrical element, insulation treatment is required during installation to avoid electrical conduction between the electrical element and the heat-conducting element, so as to ensure the safe use of the relay.

[0041] like Figure 5 and Figure 6 As shown, a plurality of heat-conducting rods 26 are installed on the cover plate 12 in a through manner, the upper end of the heat-conducting rod 26 is fixedly connected to the bottom of the contact sheet 16, and the lower end of the heat-conducting rod 26 is placed in a position close to the lower side in the chamber 22. The heat-conducting rod 26 transfers the heat absorbed by the heat-absorbing material 23. Since the contact sheet 16 is connected to the heat-conducting rod 26, the heat-conducting rod 26 can transfer the heat to the contact sheet 16, so that the heat can be released through the contact sheet 16. At the same time, in order to improve the heat transfer effect of the contact sheet 16, the contact sheet 16 is made of copper material. In order to improve the heat transfer of the heat-conducting rod 26 to the heat-absorbing material 23, the lower end of the heat-conducting rod 26 is set in a position close to the lower side of the chamber 22, so as to increase the contact area between the heat-conducting rod 26 and the heat-absorbing material 23.

[0042] like Figure 5 As shown, a sealing gasket 27 is provided at the bottom of the cover plate 12 , and the sealing gasket 27 is sleeved on the chamber 22 . The sealing gasket 27 can seal the chamber 22 when the cover plate 12 is installed on the housing 11 .

[0043] When in use, when the explosion-proof relay for motor starting is in use, due to the frequent starting of the motor, the electrical components in the inner shell 21 will continue to heat up, causing the temperature in the inner shell 21 to be high, and the heat generated by the electrical components will be transferred to the heat-conducting column 24 through the heat-conducting element, and the heat-conducting column 24 can transfer the heat to the heat-conducting plate 25 at the other end, so that the heat-absorbing material 23 absorbs the heat, and the heat absorbed by the heat-absorbing material 23 will be transferred to the contact piece 16 through the heat-conducting rod 26, and finally the heat will be released through the contact piece 16, so that the heat generated by the electrical components can be continuously extracted through the heat-conducting element, so that the heat in the inner shell 21 can be released, thereby ensuring that the temperature of the electrical components in the inner shell 21 is normal when in use, and then ensuring the safety of the relay when in use.

[0044] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0045] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A motor starting relay, It is characterized in that include: The relay body comprises a housing, a cover plate is detachably mounted on the housing, and a mounting plate is mounted on the bottom of the housing; The heat dissipation component includes an inner shell, which is arranged inside an outer shell by an integral molding method, a chamber is formed between the outer wall of the inner shell and the inner wall of the outer shell, the chamber is filled with heat-absorbing material, a plurality of heat-conducting columns are fixedly connected to the side wall of the inner shell in a penetrating manner, and a plurality of heat-conducting rods are installed in the chamber.

2. A motor starting relay according to claim 1, It is characterized in that The bottom of the shell is provided with a mounting groove matching the mounting plate, and the mounting plate is sleeved in the mounting groove.

3. A motor starting relay according to claim 1, It is characterized in that The ends of the mounting plates are each provided with mounting holes, and the mounting plates and the housing are threadedly connected with a first fixing screw.

4. A motor starting relay according to claim 1, It is characterized in that A plurality of contact sheets are mounted on the cover plate, and a plurality of studs are integrally formed on the cover plate.

5. A motor starting relay according to claim 4, It is characterized in that A plurality of second fixing screws are installed between the cover plate and the housing, and the plurality of second fixing screws are respectively arranged at the four corners of the cover plate.

6. A motor starting relay according to claim 1, It is characterized in that The outer shell is configured to be a heat insulating material, and the inner shell is configured to be a heat conducting material.

7. A motor starting relay according to claim 1, It is characterized in that The heat absorbing material is a graphite material, and the graphite material is provided in a powder form.

8. A motor starting relay according to claim 1, It is characterized in that One end of each of the heat-conducting columns is placed on the inner side of the inner shell, and the other end of each of the heat-conducting columns is placed in the chamber. One end of each of the heat-conducting columns placed in the chamber is fixedly connected to a heat-conducting plate.

9. A motor starting relay according to claim 4, It is characterized in that The plurality of heat-conducting rods are all installed on the cover plate in a penetrating manner, the upper ends of the heat-conducting rods are fixedly connected to the bottom of the contact sheet, and the lower ends of the heat-conducting rods are placed in a position close to the lower side in the chamber.

10. A motor starting relay according to claim 1, It is characterized in that A sealing gasket is arranged at the bottom of the cover plate, and the sealing gasket is sleeved on the chamber.

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