WO2019052288A1

WO2019052288A1 - Connection structure of electric control cabinet and electric control cabinet

Info

Publication number: WO2019052288A1
Application number: PCT/CN2018/099370
Authority: WO
Inventors: 江金源; 黄福豪; 梁荣鑫; 樊超; 王健
Original assignee: 格力电器（武汉）有限公司; 珠海格力电器股份有限公司
Priority date: 2017-09-12
Filing date: 2018-08-08
Publication date: 2019-03-21
Also published as: CN107396578A; CN107396578B

Abstract

Disclosed are a connection structure of an electric control cabinet and an electric control cabinet, relating to the field of electric control devices, used for locking between a cabinet body and a panel of an electric control cabinet. The connection structure of the electric control cabinet comprises a cabinet body, a cabinet cover and connectors, wherein the connectors are arranged outside the cabinet cover and the cabinet body, and the connectors are used for fastening the cabinet cover and the cabinet body. According to the technical solution, the connectors are provided between the cabinet body and the cabinet cover, and the connector is mounted with an elastic member. After the connectors are combined with the cabinet body, the cabinet cover can be fastened by the elastic force of the elastic members, and an upper cover plate and a second cover plate of the electric control cabinet can limit the movement of the connectors while protecting a spring from corrosion, thus prolonging the service life of the connectors.

Description

Connection structure and electric control box of electric control box

This application is based on CN application number 201710816891.1, application date is September 12, 2017. The disclosure of the present application is hereby incorporated by reference.

Technical field

The present disclosure relates to the field of electronic control devices, and in particular, to a connection structure of an electrical control box and an electrical control box.

Background technique

As shown in FIG. 1, the box 400 of the existing electric control box is connected with the panel 100 by a hinge 300 or the like, and then the door lock 200 is mounted on the panel 100 to lock the panel 100 and the case 400.

The inventors have found that at least the following problems exist in the prior art: since the electric control box is placed outdoors, in a humid, rainy use environment, if a connector such as a hinge 300 is used, the hinge 300 is susceptible to corrosion; The panel 100 is often opened and closed, and the hinge 300 is easily damaged by fatigue, causing the panel 100 to fall off.

Summary of the invention

The present disclosure proposes a connection structure of an electric control box and an electric control box for locking the box and the panel of the electric control box.

The present disclosure proposes a connection structure of an electric control box, including:

Box

a cover provided at an opening of the case;

A connector is disposed on the outside of the cover and the case, and is configured to clamp the cover and the case.

In some embodiments,

The connecting member is rotatably connected to the box body, and the connecting member applies a force to the box cover toward the box body; or

The connector is rotatably coupled to the cover, and the connector applies a force to the case toward the case.

In some embodiments, the connector comprises:

Connecting the body to be rotatably connected to the case;

An elastic member is sandwiched between the connecting body and the box body;

Wherein the first holding portion of the connecting body and the elastic member are located at one side of the rotatable connection, and the second holding portion of the connecting body is located at the other side of the rotatable connection;

The elastic member applies a rotational force to the first retaining portion to rotate the connecting body relative to the casing, and the second retaining portion applies the cover to the cover by the rotating force The pressing force of the lid is brought close to the box.

In some embodiments, the connection structure of the electrical control box further includes:

a latching portion is disposed on a side of the box cover facing the box body; the latching portion is in face contact with the second latching portion of the connecting body, the latching portion and the second card The contact surface of the holder is parallel to the direction in which the cover is extended.

a step portion is disposed outside the box body, the step portion is in surface contact with the first holding portion, and a direction of a contact surface of the step portion and the first holding portion is perpendicular to the box cover The direction of extension.

In some embodiments, the connecting body and the case are rotatably connected by spherical contact.

In some embodiments, the elastic member is selected from one of the following: a spring and a spring.

In some embodiments, the cover is provided with a locking groove toward a side of the case, and an edge of the case is caught in the clamping groove.

In some embodiments, a portion of the casing that is caught in the clamping groove is provided with an inner recess in which a seal is disposed.

In some embodiments, the tank is of aluminum alloy.

In some embodiments, the lid is aluminum alloy.

In some embodiments, the number of the connectors is plural, and each of the connectors is disposed in a distributed manner.

In some embodiments, a distance L1 from the end of the first latch portion of the rotatable connection of the connecting body to the housing is greater than a distance L2 from the end of the second latch portion of the rotatable joint.

In some embodiments, L1: L2 = 1.5 to 3.5.

In some embodiments, the elastic member comprises:

The elastic piece includes a first segment connected to the connecting body and a second segment for abutting the casing, and an angle between the first segment and the second segment is a right angle or an obtuse angle.

In some embodiments, the angle between the first segment and the second segment is between 120° and 135°.

In some embodiments, the cabinet comprises:

a U-shaped body includes a first opening, a second opening, and a third opening, the first opening is opposite to the second opening, and the cover is disposed at the third opening;

a first cover plate disposed at the first opening;

The second cover is disposed at the second opening.

In some embodiments, the longitudinal ends of the connector are respectively attached to the first cover and the second cover.

In some embodiments, the first cover is detachably insertable with the U-shaped body, and/or the second cover is detachably coupled to the U-shaped body.

Another embodiment of the present disclosure provides an electrical control box including a connection structure of an electrical control box provided by any one of the technical solutions of the present disclosure.

In the above technical solution, a connecting member is designed between the box body and the cover, and an elastic member is mounted on the connecting member. After the connecting member is combined with the box body, the box cover is fastened by the elastic force of the elastic member. The first cover and the second cover of the electric control box limit the movement of the connecting member while protecting the spring from corrosion, thereby improving the service life of the connecting member.

DRAWINGS

1 is a schematic view showing the connection between a box cover and a box of an electric control box in the prior art;

2 is a perspective view showing the cooperation relationship of each part of the connection structure of the electric control box according to an embodiment of the present disclosure;

Figure 3 is a partial enlarged view of A of Figure 2;

4 is a front view showing the cooperation relationship of each part of the connection structure of the electric control box according to an embodiment of the present disclosure;

Figure 5 is a partial enlarged view of B of Figure 4;

Figure 6 is a schematic structural view of the connecting member of Figure 2;

Figure 7 is a front view of the elastic member of Figure 2;

Figure 8 is a side view showing the elastic member of Figure 2;

Figure 9 is a cross-sectional view taken along line C-C of Figure 8;

Figure 10 is a side elevational view showing the maximum outer diameter of the spring;

FIG. 11 is a schematic diagram showing a partial structure of an electrical control box connection structure according to another embodiment of the present disclosure; FIG.

Figure 12 is a front view showing the structure of the elastic piece of Figure 11;

Figure 13 is a side elevational view of Figure 12;

Detailed ways

The technical solutions provided by the present disclosure will be described in more detail below with reference to FIGS. 2 to 13 .

Referring to FIG. 2 and FIG. 4 , an embodiment of the present disclosure provides a connection structure of an electric control box, including a box body 1 , a box cover 2 and a connecting member 3 , and the box cover 2 is disposed at an opening of the box body 1 . The connecting member 3 is disposed on the outside of the box cover 2 and the box body 1. The connecting member 3 is used for clamping the box cover 2 and the box body 1 so that the box cover 2 and the box body 1 are closely fitted, and the gap between the two is extremely close. small.

The inside of the electric control box is used to install electrical components. After the connection member 3 is provided, the case 1 and the cover 2 can be firmly held together without providing other connection structures.

Referring to FIG. 4 and FIG. 5, in the embodiment, the connecting member 3 is disposed outside the box body 1 and the box cover 2, and does not penetrate the box body 1 and the box cover 2, so it is different from the penetrating connection manner of bolts and the like. The connector 3 does not affect the sealing of the electrical control box. After the connector 3 is installed in place, the locking of the case 1 and the cover 2 is automatically achieved without an additional locking operation.

Referring to Fig. 4, the number of the connecting members 3 is plural, and the respective connecting members 3 are dispersed.

The connecting member 3 fastens the case 1 and the cover 2 together, for example, by means of a lever principle. For example, the following two ways:

Manner 1: The connecting member 3 is rotatably connected to the box body 1, and the connecting member 3 applies a force to the box cover 2 toward the box body 1.

Manner 2: The connecting member 3 is rotatably connected to the box cover 2, and the connecting member 3 applies a force to the box body 1 toward the box cover 2.

When the size of the box 1 is significantly larger than the size of the box cover 2, the former method is simpler and more stable.

Referring to FIG. 5, an alternative embodiment is that the connecting member 3 includes a connecting body 31 and an elastic member 32. The connecting body 31 is rotatably connected to the box body 1, and the elastic member 32 is sandwiched between the connecting body 31 and the box body 1 (including specifically the U-shaped body 15). The first holding portion 311 of the connecting body 31 and the elastic member 32 are located on one side of the rotatable connection, and the second holding portion 312 of the connecting body 31 is located on the other side of the rotatable connection. The elastic member 32 is in a compressed state after being mounted.

The elastic member 32 applies a rotational force to the first engaging portion 311 to rotate the connecting body 31 relative to the casing 1. The second retaining portion 312 applies the rotating cover to the cover 2 so that the cover 2 is close to the box. The pressing force of the body 1.

In the above structure, the cover 2 is firmly connected to the case 1 by the elastic force of the elastic member 32.

Referring to FIG. 5 , a step portion 13 is disposed outside the box body 1 , and the step portion 13 is in surface contact with the first holding portion 311 . The direction of the contact surface between the step portion 13 and the first holding portion 311 is perpendicular to the box cover 2 . The direction of extension of the surface. The elastic force of the elastic member 32 is efficiently transmitted to the step portion 13 by this structure.

Referring to FIG. 5 , a side of the cover 2 facing the case 1 is provided with a latching portion 23 , and the latching portion 23 is in face contact with the second latching portion 312 of the connecting body 31 , and the latching portion 23 and the second latching portion are respectively The contact surface of 312 is parallel to the direction of extension of the surface of the cover 2. When the engaging portion 23 is in surface contact with the second engaging portion 312, not only is it easy to mount, but also a force is reliably transmitted.

Referring to Fig. 4, the connecting member 3 is disposed in the outer recess of the casing 1, and the outer surface of the connecting member 3 is substantially flush with the outer surface of the casing 1, so that the appearance of the entire electric control box is flatter and more compact. .

Referring to Fig. 5, the connecting body 31 and the case 1 are rotatably connected by spherical contact. This connection is easy to install and reliable.

Referring to FIG. 5 and FIG. 6, the connecting member 3 utilizes the principle of lever when locking, and the connecting members 3 are disposed on the left and right sides of the box, and each connecting member 3 is designed with a pivot point, and the connecting member 3 includes the first A catching portion 311 and a second catching portion 312, the connecting member 3 includes a spring as the elastic member 32. Before the insertion of the connecting member 3, the spring is first fastened to the connecting body 31 of the connecting member 3 by screws, and the height of the spring is larger than the distance between the connecting body 31 and the casing 1. The connecting member 3 compresses the spring when the rotating fulcrum is inserted into the box body, and the elastic force of the spring causes the engaging portion 23 on the box cover 2 and the second holding portion 312 of the connecting member 3 to be engaged with each other, and the connecting member 3 A catching portion 311 is engaged with the step portion 13 on the casing. Under the joint action of the two sets of buckles, the function of fastening the box cover 2 and the box body 1 together is achieved, and the sealing property of the box body is improved.

In some embodiments, the connecting body 31, the cover 2, and the case 1 are each formed by extrusion. Therefore, the pivot point of the box body 1 is in the form of a rib, and the connecting member 3 is provided with a corresponding rotating groove. The rotating groove and the pivot point cooperate with each other, and the connecting member 3 is inserted from the upper end or the lower end of the box body, and the connecting member 3 The whole can be rotated around the fulcrum.

Referring to Figures 5 and 6, when the cover 2 is to be removed, the connectors 3 on both sides are simultaneously pressed. Since the locking of the connecting member 3 utilizes the principle of the lever, the connecting member 3 rotates around the fulcrum when pressed. The distance from the first holding portion 311 to the fulcrum is the pressing position of the human finger, and the length is L1. The distance from the second holding portion 312 to the fulcrum is L2, and the distance L1 is greater than the distance L2. Alternatively, L1: L2 = 1.5 to 3.5.

In some embodiments, the two distances satisfy the relationship: L2: L1 = 1:2. L2: L1=1: 2 is an optional value, mainly considering the installation space of the connecting member 3 left on both sides of the box body 1, and the elastic force generated by the spring. In the case where the same spring is used to generate the same elastic force, the larger the value of the length L1, the easier it is to press the connector to open the cover. In order to avoid erroneous operation during the installation process, the cover is easily opened, so the above ratio is selected.

The fastening force of the connecting member 3 is provided by the elastic force of the spring, and the structure of the spring and its dimensions are as shown in Figs. The spring includes two mounting holes for screwing in the screws to secure the spring to the connector. The dimensions of the springs satisfy the following relationship:

(1) Referring to Fig. 7, the height H of the spring, the height H should be greater than the distance between the connecting member 3 and the casing 1, and the connecting member 3 compresses the spring when inserted, so that the spring generates an elastic force, and the value of H should be 6 mm. ~12mm, the compression of the spring is 1mm ~ 7mm.

(2) Referring to Figures 8 and 9, the diameter D of the spring and the pitch L, these two dimensions will affect the ease of deformation of the spring. Considering that the force generated when the finger is pressed is greater than the spring force of the spring, the cover can be opened. The diameter D ranges from 0.6 mm to 1.2 mm, and the pitch L ranges from 1 mm to 3 mm.

(3) Referring to Figure 10, the outer diameter E of the maximum ring of the spring is mainly limited by the installation space between the connecting piece and the main body. If the outer diameter E is too large, the connecting piece cannot be inserted into the box, and the reasonable value range is 10 mm~ 13.5mm. The number of turns C of the spring is determined by the height H and the pitch L. The three have the following relationship: C≈H/L.

Referring to Figures 2-10, in some embodiments, the resilient member 32 is exemplified by the use of a spring. Referring to Figures 11 through 13, in some embodiments, the resilient member 32 is exemplified by the use of a spring. However, except for the spring and the shrapnel, the structure of the other parts can be referred to each other.

Referring to Fig. 5, the cover 2 is provided with a gripping groove 24 toward the side of the case 1, and the edge of the case 1 is caught in the catching groove 24. In this way, on the one hand, the positioning function is exerted, and on the other hand, the connection between the case 1 and the cover 2 is made more stable.

Referring to FIG. 5, a portion of the casing 1 that is caught in the clamping recess 24 is provided with an inner recess 14 in which a sealing member 4 is disposed. The seal 4 includes a seal ring or the like. The cover and the seal 4 of the above structure are used, so that the electric control box reaches the protection level of IP65.

Optionally, the case 1 is of aluminum alloy. Optionally, the lid 2 is of aluminum alloy. This can greatly improve the overall heat dissipation performance of the aluminum-plastic electric control box.

Referring to FIG. 4, in the embodiment, the number of the connecting members 3 is plural, and the connecting members 3 are dispersed.

Referring to FIG. 4 and FIG. 6, in order to make the case 1 and the cover 2 detachable, but not easily removed, the connection body 31 and the case 1 are rotatably connected to the end of the first holding portion 311. The distance L1 is greater than the distance L2 from the end of the second latching portion 312 of the rotatable joint.

Referring to FIG. 11 to FIG. 13 , in another embodiment of the present disclosure, the elastic member 32 includes a spring piece, and the elastic piece includes a first segment 321 connected to the connecting body 31 and a second segment 322 for abutting the casing 1 , the first segment The angle between the 321 and the second segment 322 is a right angle or an obtuse angle.

Referring to FIG. 13, in the present embodiment, the angle α between the first segment 321 and the second segment 322 is 120° to 135°.

Referring to FIG. 11 to FIG. 13 , the elastic piece is installed in the same manner as the spring. When the connecting piece 3 is inserted into the box body, the elastic piece is deformed, and the original bending angle of the elastic piece becomes large, thereby generating elastic force, and the cover and the main body are buckled. tight. The factors affecting the difficulty of the deformation of the shrapnel are mainly the bending angle B and the thickness A of the shrapnel. These two dimensions should satisfy the following relationship:

(1) The thickness M1 of the elastic piece is in the range of 0.8 mm to 1.2 mm. If the shrapnel is too thick, when the human finger presses the shrapnel, the shrapnel is hard to deform, and the cover is difficult to remove. If the shrapnel is too thin, when the human finger presses the shrapnel, the shrapnel cannot be recovered after being deformed, and the shrapnel loses its elasticity, and the cover and the main body cannot be fastened;

(2) The bending angle α of the elastic piece is in the range of 120° to 135°. When the connecting piece is inserted, the deformation angle of the elastic piece bending angle is 5° to 10°. If the bending angle is too small, the elastic piece is hard to be deformed when the connecting member is inserted into the casing, and the connecting member cannot be smoothly inserted. If the bending angle is too large, the elastic piece will not be deformed when the connecting member is inserted into the box, and the elastic piece cannot generate elastic force, and the cover and the main body cannot be fastened.

In the above technical solution, the connecting member mounting structure is designed on the left and right sides of the main body of the electric control box, and the connecting member is provided with an elastic member. After the connecting member is combined with the box body, the elastic cover member can be used to fasten the box cover and the electric control box. The upper and second cover plates can limit the movement of the connecting member, and at the same time protect the spring from corrosion and improve the service life of the connecting member.

Referring to Figures 2 and 4, in some embodiments, the case 1 is, for example, of a structure in which the case 1 includes a U-shaped body 15, a first cover 16 and a second cover 17, and the U-shaped body 15 includes the first An opening, a second opening, and a third opening, the first opening being opposite to the second opening. The first cover 16 is disposed at the first opening, the second cover 17 is disposed at the second opening, and the cover 2 is disposed at the third opening.

Optionally, the longitudinal ends of the connecting member 3 are respectively engaged with the first cover 16 and the second cover 17.

As shown in FIG. 3 and FIG. 5, the spring is fastened to the connecting member 3 by screws. The upper and lower planes of the connecting member 3 are respectively in close contact with the first cover 16 and the second cover 17 of the electric control box. The first cover plate 16 and the second cover plate 17 can effectively block rainwater, dust and the like from entering the connecting member from the upper and lower ends of the connecting member 3, thereby reducing the possibility of corrosion of the spring in the connecting member 3, and prolonging the spring and the screw. Service life. In FIG. 3, the upper and lower ends refer to the two ends of the connecting member 3 in contact with the first cover 16 and the second cover 17. After the connecting member 3 is combined with the box body 1, since the connecting member 3 includes a spring, the box cover 2 can be fastened by the elastic force of the spring, and the first cover plate 16 and the second cover plate 17 of the electric control box are engaged with the box body 1. The movement of the connecting member 3 can be restricted, and at the same time, the spring can be protected from corrosion, and the service life of the connecting member 3 is improved.

Optionally, the first cover 16 is detachably inserted from the U-shaped body 15. And/or, the second cover plate 17 is detachably inserted from the U-shaped body 15.

In the description of the present disclosure, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", The orientation or positional relationship of the "top", "bottom", "inside", "outside" and the like is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying The device or component referred to must have a particular orientation, is constructed and operated in a particular orientation, and thus is not to be construed as limiting the scope of the disclosure.

It should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure and are not to be construed as limiting thereof; although the present disclosure will be described in detail with reference to the preferred embodiments, those skilled in the art should understand that Modifications of the specific embodiments disclosed are intended to be equivalent to the equivalents of the technical features of the present disclosure.

Claims

A connection structure of an electric control box, characterized in that it comprises:

Box (1);

a cover (2) disposed at an opening of the case (1);

A connecting member (3) is provided on the outside of the cover (2) and the case (1), and is used for clamping the cover (2) and the case (1).
The connection structure of the electric control box according to claim 1, wherein

The connecting member (3) is rotatably connected to the box body (1), and the connecting member (3) applies a force to the box cover (2) toward the box body (1); or

The connecting piece (3) is rotatably connected to the box cover (2), and the connecting piece (3) applies a force to the box body (1) toward the box cover (2).
The connection structure of the electric control box according to claim 1 or 2, characterized in that the connecting member (3) comprises:

Connecting the body (31) to be rotatably connected to the case (1);

An elastic member (32) is sandwiched between the connecting body (31) and the case (1);

Wherein, the first holding portion (311) of the connecting body (31) and the elastic member (32) are located at one side of the rotatable connection, and the second holding portion (312) of the connecting body (31) ) on the other side of the rotatable connection;

The elastic member (32) applies a rotational force to the first holding portion (311) to rotate the connecting body (31) relative to the box (1), and the second holding portion (312) Applying a pressing force to the cover (2) to bring the cover (2) close to the case (1) under the action of the rotational force.
The connection structure of the electrical control box according to claim 3, further comprising:

a latching portion (23) is disposed on a side of the cover (2) facing the case (1); the latching portion (23) and a second latching portion of the connecting body (31) (312) Face contact, the contact surface of the engaging portion (23) and the second holding portion (312) is parallel to the extending direction of the cover (2).
The connection structure of the electrical control box according to claim 3, further comprising:

a step portion (13) disposed outside the casing (1), the step portion (13) being in surface contact with the first holding portion (311), the step portion (13) and the first portion The direction of the contact surface of a catch portion (311) is perpendicular to the direction in which the cover (2) extends.
The connecting structure of the electric control box according to claim 3, characterized in that the connecting body (31) and the box (1) are rotatably connected by spherical contact.
The connection structure of the electric control box according to claim 3, wherein the elastic member (32) is selected from one of the following: a spring and a spring.
The connecting structure of the electric control box according to claim 1, characterized in that the box cover (2) is provided with a clamping groove (24) facing the side of the box body (1), the box body ( The edge of 1) is stuck in the clamping groove (24).
The connection structure of the electric control box according to claim 8, wherein a portion of the case (1) stuck in the clamping groove (24) is provided with an inner recess (14), the inner portion A seal is provided in the recess (14).
The connection structure of an electric control box according to claim 1, characterized in that the case (1) is made of an aluminum alloy.
The connection structure of an electric control box according to claim 1, characterized in that the cover (2) is made of an aluminum alloy.
The connection structure of the electric control box according to claim 1, characterized in that the number of the connecting members (3) is plural, and each of the connecting members (3) is dispersed.
The connection structure of the electric control box according to claim 3, characterized in that the distance between the connecting body (31) and the box (1) rotatably connected from the end of the first holding portion (311) L1 is greater than a distance L2 from the end of the second latching portion (312) of the rotatable joint.
The connection structure of the electric control box according to claim 13, wherein L1: L2 = 1.5 to 3.5.
The connection structure of the electric control box according to claim 7, wherein the elastic member (32) comprises:

a spring piece including a first segment (321) coupled to the connecting body (31) and a second segment (322) for abutting the case (1), the first segment (321) and the The angle between the second segments (322) is a right angle or an obtuse angle.
The connection structure of the electric control box according to claim 15, wherein an angle between the first segment (321) and the second segment (322) is 120° to 135°.
The connection structure of the electric control box according to claim 1, characterized in that the case (1) comprises:

The U-shaped body (15) includes a first opening, a second opening and a third opening, the first opening is opposite to the second opening, and the cover (2) is disposed at the third opening;

a first cover (16) disposed at the first opening;

A second cover (17) is disposed at the second opening.
The connecting structure of the electric control box according to claim 17, characterized in that the longitudinal ends of the connecting member (3) are respectively associated with the first cover (16) and the second cover (17) fit.
The connection structure of the electric control box according to claim 17, wherein the first cover (16) is detachably inserted from the U-shaped body (15), and/or the second cover The plate (17) is detachably inserted from the U-shaped body (15).
An electrical control box comprising the connection structure of the electrical control box of any of claims 1-19.