TWI724345B - A relay and a motor - Google Patents

Abstract

This application provides relays and motors. The relay of the present application includes: a housing with ventilation holes provided therein; a relay unit provided in the housing; and a water-tight ventilating layer covering the vents on the housing. According to the technical solution of the present application, the ventilation and water tightness of the relay are improved.

Description

Relay and motor

This application relates to the field of motors, and in particular to relays of motors.

Relay is an electrical control device that can control a larger operating current with a smaller operating current, and can be used to delay or time switch the operating circuit to achieve automatic adjustment, safety protection and conversion circuit functions, so that the relay can be used Application areas such as high current demand such as control motors.

In the known technology, the relay does not have a dedicated ventilation structure, which will result in poor heat dissipation performance, and will also affect its working temperature and working life. In addition, its structure has poor water tightness, which will seriously affect its working life.

Therefore, it is necessary to provide improved technical solutions to overcome the technical problems existing in the prior art.

The main technical problem to be solved by this application is the ventilation and water tightness of the relay.

In order to solve the above technical problems, on the one hand, the present application provides a relay, which includes: a housing on which ventilation holes are opened; a relay unit, which is arranged in the housing; and a water-tight and gas-permeable layer, the water-tight and gas-permeable layer Cover the ventilation holes on the housing.

On the other hand, the present application provides a motor, which includes the relay as described above.

According to the technical solution of the present application, the water-tight cover on the ventilation hole of the relay housing The permeability layer can effectively improve the ventilation and water tightness of the relay.

100‧‧‧Relay

110‧‧‧Shell

111‧‧‧Top Wall

112‧‧‧Columnar sidewall

113‧‧‧Ventilation hole

114‧‧‧Boss

115‧‧‧fastening hole

120‧‧‧Relay unit

130‧‧‧Water-tight and breathable layer

140‧‧‧end cap

141‧‧‧Folding

142‧‧‧Make room

143‧‧‧Mounting hole

150‧‧‧Elastic washers

151‧‧‧Ventilation slot

152‧‧‧Through hole

160‧‧‧Ventilation gap

170‧‧‧fastening element

Refer to the detailed description of the following specific embodiments in conjunction with the accompanying drawings to better understand the present application. The same reference numerals in the accompanying drawings refer to the same elements in the views. Among them: FIG. 1 shows a schematic diagram of a relay according to a specific embodiment; FIG. 2 shows a schematic top view of a relay according to a specific embodiment; and FIG. 3 shows a schematic cross-sectional view along the line A-A shown in FIG. 2.

Referring to FIGS. 1 to 3, a relay 100 according to a specific embodiment of the present application includes a housing 110 and a relay unit 120 provided in the housing 110. Wherein, a ventilation hole 113 is provided on the housing 110, and a water-tight and breathable layer 130 is covered on the ventilation hole 113. In this arrangement, the airflow can freely pass through the water-tight air-permeable layer 130, enter and exit the inside and outside of the housing 110 through the ventilation holes 113 on the housing 110, and exchange heat with the relay unit 120 in the housing 110 to achieve Air convection is used to cool the relay unit. At the same time, water vapor or water droplets cannot penetrate into the housing through the water-tight and breathable layer, and therefore cannot cause rust and other negative effects on the relay unit.

According to the description in the foregoing embodiment, when the ventilation hole 113 is provided on the housing 110 of the relay 100 and the water-tight air-permeable layer 130 is covered, the effects of both ventilation and water-tightness can be achieved. Such a water-tight and breathable layer has many products in the prior art, for example, it may be a Gore-Tex film, and so on. And with the development of technology, a variety of material films with both water tightness and air permeability may be developed in the future, all of which should be included in the scope of this application.

For the ventilation hole and the water-tight and breathable layer covering it, a variety of specific improvements can be made on this basis to achieve different technical effects from different aspects.

For example, when the involved housing 110 includes a flat housing part, it may be considered to provide the ventilation hole 113 on the flat housing part. More specifically, as shown in FIG. 1, for the cylindrical relay 100, the housing 110 includes a cylindrical side wall 112 and a flat top wall 111 and a bottom wall. At this time, the ventilation hole 113 is provided on the top wall 111. In this way, the mechanical processing of the ventilation hole structure is more convenient, and it is also more convenient to cover the water-tight and breathable layer on it without changing the original contour of the outer surface. It should be understood that although the above description is based on the venting holes provided in the top wall. However, in fact, the ventilation holes can be arranged on the same flat bottom wall, or even two walls are provided with ventilation holes, which have similar technical effects and will not be repeated here.

For another example, a plurality of such ventilation holes 113 may be provided in the housing 110 to achieve a better air convection effect.

On the basis of the foregoing embodiments, additional technical effects can be achieved by adding some additional components. Examples are also given below.

For example, an end cover 140 may be additionally provided, and the end cover 140 may cover the top wall 111 and/or the bottom wall provided with the ventilation holes. This provides a better fixing effect for the water-tight and breathable layer provided thereon. Of course, in consideration of further optimized fixing and sealing effects, an elastic washer 150 can also be added between the end cover 140 and the top wall 111 and/or the bottom wall to provide a certain buffer space, thereby making the fastening of the two more effective. reliable.

Although several fixing means are provided, considering the original intention of this application, the requirement of ventilation and convection of the relay unit 120 should be taken into consideration while fixing. Therefore, the end cover 140 further includes a flange 141 extending from the top wall 111 and/or the bottom wall toward the side wall, and there is a ventilation gap 160 between the flange 141 and the side wall; and a ventilation groove 151 is provided on the elastic gasket 150, and the ventilation groove 151 communicates with each other. Ventilation hole 113. At this time, an air flow channel for convection inside and outside the housing is formed between the fixing elements. Specifically, air can flow inward through the ventilation gap 160 between the flange 141 and the side wall, and after flowing through the ventilation slot 151 on the elastic gasket 150, it finally enters the housing through the ventilation hole 113 to cool the relay unit, and Can flow out in the reverse direction. Both of the above settings The technical effects of ventilation, convection and component fixation are improved.

In addition, due to the presence of multiple elements, in order to provide positioning and alignment and facilitate the assembly process, a boss 114 can be provided on the top wall 111 and/or the bottom wall of the housing 110, and a boss 114 can be provided on the elastic washer 150 to cooperate with the boss 114 The through hole 152 is provided on the end cover 140, and a space 142 for accommodating the pressure deformation of the elastic washer 150 is provided on the end cover 140. By placing the through hole 152 on the elastic washer 150 through the boss 114, and then aligning the relief space 142 on the end cover 140 with the boss 114, the positioning and alignment of the three can be easily achieved; When the end cover 140 firmly presses the elastic washer 150 on the housing 110, the elastic deformation of the elastic washer 150 due to the pressure can extend into the relief space 142, which is more convenient to promote the tightness of the three. On this basis, a fastening hole 115 is provided in the boss 114, and an installation hole 143 is opened in the relief space 142; and the fastening element 170 is matched with the fastening hole 115 through the installation hole 143, thereby achieving the Multiple components are easily installed as a whole.

According to another concept of the present application, a motor of a specific embodiment is also provided herein. The motor includes the relay in any one of the foregoing embodiments, and therefore also has corresponding technical effects, so it will not be repeated here.

The above specific implementation manners are only used to illustrate the application, but not to limit the application. In order to illustrate the relative position relationship, relative azimuth terms such as left and right, top and bottom are used in this application, which are not a limitation on absolute positions. Persons of ordinary skill in the relevant technical fields can also make various changes and modifications to the technical solutions of this application without departing from the scope of this application. Therefore, all equivalent technical solutions also belong to the scope of this application. The patent of this application The scope of protection shall be limited by the claim.

100‧‧‧Relay

110‧‧‧Shell

111‧‧‧Top Wall

112‧‧‧Columnar sidewall

113‧‧‧Ventilation hole

114‧‧‧Boss

115‧‧‧fastening hole

130‧‧‧Water-tight and breathable layer

140‧‧‧end cap

141‧‧‧Folding

142‧‧‧Make room

143‧‧‧Mounting hole

150‧‧‧Elastic washers

151‧‧‧Ventilation slot

152‧‧‧Through hole

170‧‧‧fastening element

Claims (7)

A relay (100), comprising: a housing (110) on which a ventilation hole (113) is opened, wherein the housing (110) includes a columnar side wall (112) and a flat top wall (111) and a bottom wall, The ventilation holes (113) are arranged on the top wall (111) and/or the bottom wall; the relay unit (120) is arranged in the housing (110); the water-tight and air-permeable layer (130), The water-tight and breathable layer (130) covers the ventilation holes (113) on the housing (110); wherein, the relay (100) further includes an end cover (140), which covers The top wall (111) and/or the bottom wall. The relay (100) according to claim 1, wherein the end cover (140) further includes a folding edge (141) extending from the top wall (111) and/or the bottom wall toward the side wall (112), and the folding There is a ventilation gap (160) between the edge (141) and the side wall (112). The relay (100) according to claim 1 or 2, further comprising an elastic washer (150), and the elastic washer (150) is arranged on the end cover (140) and the top wall (111) and/ Or between the bottom walls; and the elastic gasket (150) is provided with a ventilation slot (151), and the ventilation slot (151) communicates with the ventilation hole (113). The relay (100) according to claim 3, wherein a boss (114) is provided on the top wall (111) and/or the bottom wall of the housing (110), and the elastic washer (150) is A through hole (152) that matches with the boss (114) is provided, and the end cover (140) is provided with a space (142) for accommodating the pressure-bearing deformation of the elastic washer (150); Wherein, the boss (114) is placed in the relief space (142) through the through hole (152). The relay (100) according to claim 4, further comprising a fastening element (170); the boss (114) is provided with a fastening hole (115), and the relief space (142) is opened A mounting hole (143) is provided; the fastening element (170) is matched with the fastening hole (115) via the mounting hole (143). The relay (100) according to any one of claim 1 or 2, wherein the water-tight and gas-permeable layer (130) is a Gore-Tex film. A motor, comprising: the relay (100) according to any one of claims 1 to 6.

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