CN112813651A - Door hinge connecting device and roller washing machine - Google Patents

Abstract

The invention belongs to the technical field of hinge connection, and particularly discloses a door hinge connecting device and a roller washing machine, wherein the door hinge connecting device comprises a door body and a door supporting piece provided with an opening for opening or closing the door body; a hinge assembly rotatably connecting a door body and a door support member, the hinge assembly comprising: the hinge support is fixed on the door body, and two ends of the hinge shaft are fixed with the door support and penetrate through the hinge leaf so that the hinge leaf rotates around a shaft along with the hinge support in the movement of opening or closing the opening of the door body; the double torsion springs are sleeved on the hinge shaft and comprise two pressing ends which are parallel to each other and used for receiving pressing force of the hinge leaves, and when the door body is in a closed opening state, the pressing ends are pressed by the hinge leaves so that elastic deformation of the double torsion springs is maximum. The door hinge connecting device and the drum washing machine have the advantages that the door body automatically pops open relative to the door supporting piece, and the use experience of a user is improved.

Description

Door hinge connecting device and roller washing machine

Technical Field

The invention relates to the technical field of hinge connection, in particular to a door hinge connecting device and a roller washing machine.

Background

For example, a drum washing machine on the market is generally arranged as a front opening door, wherein one type of drum washing machine is designed to be a door rotating door embedded into a front panel serving as a door support and rotatably connected with the front panel through a door hinge assembly, a door hook is fixedly installed on the door body, a door lock mechanism is fixedly installed on the front panel, the door hook is fixed by a mechanical mechanism, the door lock mechanism realizes the door locking action of the drum washing machine, then safe washing and high-speed dewatering action is carried out, and the water leakage phenomenon in the washing process is prevented. After the existing drum washing machine on the market is used, because the inside of a drum of the drum washing machine is closed, the washed clothes are very wet, after the clothes are washed, a door body of the washing machine is still closed, the clothes need to be taken out of the drum washing machine in time, and if a user cannot take the clothes out of the washing machine in time, the clothes are placed for a long time, bacteria are easily bred in the clothes in the washing machine, and particularly, peculiar smell is easily generated in hot seasons. Drum type washing machine on the existing market is having washed the clothes, after finishing using, only have short-lived music prompt tone usually, the display screen also can extinguish automatically after a period of time, the user often can forget timely sunning clothing, and can't open the door after washing the clothes at washing machine, and, in user's use at ordinary times, even the user remembers even sunning clothing and open the door body, however, present door hinge subassembly is when the user opens the door body, can't provide enough elastic force and make the door body keep away from the front panel and open enough angle, cause the user still to need further stimulate the door body so that take out the clothing that has washed, consequently, the user experience sense has been reduced.

Disclosure of Invention

Based on this, aiming at the prior art, the invention aims to solve the technical problem of providing a door hinge connecting device and a drum washing machine which can generate enough elastic acting force to act on a door body to enable the door body to automatically get away from a door supporting piece and enable the door body to be opened at a sufficient angle, thereby facilitating a user to take articles through an opening and improving the use experience of the user.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

in one aspect, the present invention provides a door hinge connecting device, comprising: the door comprises a door body and a door supporting piece, wherein the door supporting piece is provided with an opening for opening or closing the door body; a hinge assembly rotatably connecting a door body and a door support member, the hinge assembly comprising: the hinge frame comprises a hinge seat and a hinge leaf which are oppositely arranged, and the hinge seat is fixed on the door body; the two ends of the hinge shaft are fixed with the door supporting piece and penetrate through the hinge leaf so that the hinge leaf rotates around a shaft along with the hinge seat in the movement of opening or closing the opening of the door body; the double-torsion spring is sleeved on the hinge shaft and comprises two pressing ends which are parallel to each other and used for receiving pressing force of the hinge leaves, and the pressing ends are pressed by the hinge leaves when the door body is in a closed opening state so that elastic deformation of the double-torsion spring is maximum.

In one technical scheme, the middle of the hinge leaf is provided with a notch, a double torsion spring is arranged in the notch, and the lacking edge of the notch is used for applying abutting force to the two abutting ends and receiving elastic restoring force from the two abutting ends.

In one technical scheme, the hinge leaf further comprises cylindrical through grooves positioned on two sides of the notch, and the hinge shaft penetrates through the through grooves.

In one technical scheme, the double torsion spring further comprises a linking end, the two abutting ends and the linking end extend along the radial direction of the double torsion spring at an included angle, the two abutting ends are symmetrically arranged relative to the hinging end in the axial direction of the double torsion spring, and the linking end is abutted to a limiting rib arranged on the door supporting piece in the opening state of the door body.

In one embodiment, the door prop member is provided with an opening, and the hinge bracket further includes an arcuate flap positioned between the hinge base and the hinge leaf for movement in the opening as the hinge leaf rotates about the hinge axis.

In one technical scheme, the door supporting piece is further provided with a bulge surrounding the opening, and the bulge is abutted against the hinge seat when the door body is in a closed opening state.

In a technical scheme, the hinge assembly further comprises a nut, the door supporting frame is provided with a pair of shaft sleeves with through holes, the hinge shaft penetrates through the through holes, protruding platforms and external threads are arranged at two ends of the hinge shaft respectively, the protruding platforms are abutted to the end portions of one shaft sleeve, the external threads extend out of the other shaft sleeve and are fixed with the nut in a threaded mode, and the nut is abutted to the end portions of the other shaft sleeve.

In one technical scheme, a pair of shaft sleeves are convexly arranged on the door supporting frame, and a reinforcing rib is arranged between the pair of shaft sleeves and the through hole.

In another aspect, the present invention provides a drum washing machine, which includes any one of the door hinge connecting devices, the door body is a rotating door having a glass bowl, the door supporting member is a front panel, the opening is a laundry access opening, and the rotating door is rotatably mounted on the front panel through a hinge assembly to open or close the laundry access opening.

In a technical scheme, the front panel is provided with a hinge assembly and a door lock mechanism on two sides of an opening respectively, a door hook matched with the door lock mechanism to lock the rotating door is arranged on the rotating door, the door lock mechanism is provided with an electromagnetic coil and a cam slider, the cam slider is movably arranged in the electromagnetic coil, a limiting groove is formed in the door hook, after the rotating door is completely closed, the cam slider is inserted into the limiting groove of the door hook to realize mutual locking, after the electromagnetic coil is electrified, the electromagnetic force of the electromagnetic coil acts on the cam slider to enable the cam slider to move and break away from the limiting groove, and then the rotating door is automatically opened under the action of a double torsion spring.

Compared with the prior art, the invention has the beneficial effects that: the door hinge connecting device and the drum washing machine have the advantages that the door body is automatically bounced open relative to the door supporting piece, and the use experience of a user is improved.

Drawings

In order that the present disclosure may be more readily and clearly understood, the following detailed description of the present disclosure is provided in connection with specific embodiments thereof, which are included in the accompanying drawings, and the description of which is intended to illustrate and not limit the present disclosure, wherein:

FIG. 1 is a front view of a door hinge connecting device according to the present invention;

FIG. 2 is an assembled view of a hinge assembly and a door support member portion of the door hinge connecting device of the present invention;

FIG. 3 is an exploded view corresponding to FIG. 2;

FIGS. 4 and 5 are front views of the double torsion spring according to the door hinge connecting device of the present invention showing the maximum amount of non-elastic deformation and elastic deformation

FIG. 6 is a cross-sectional view of the door body of the door hinge connecting device of the present invention at one viewing angle in a fully opened state;

FIG. 7 is an enlarged view of a portion of FIG. 6 at A;

FIG. 8 is a cross-sectional view of another perspective of the door body of the door hinge connecting device of the present invention in a fully open state;

FIG. 9 is an enlarged view of a portion of FIG. 8 at B;

FIG. 10 is a sectional view of a door body of the door hinge connecting device of the present invention in a half open state;

FIG. 11 is an enlarged view of a portion of FIG. 10 at C;

FIG. 12 is a cross-sectional view of a door body of the door hinge connecting device of the present invention in a fully closed state;

FIG. 13 is an enlarged view of a portion of FIG. 12 at D;

the reference numbers in the figures denote:

10-a door body; 11-door hook; 12-a glass bowl;

20-a door support; 21-opening; 22-limit ribs; 23-opening a hole; 24-a bump; 25-shaft sleeve; 26-reinforcing ribs; 27-a door lock mechanism;

30-a hinge assembly; 31-a hinge mount; 31A-hinge mount; 31B-hinge leaf; 31B 1-notch; 31B 2-missing edge; 31B 3-through slots; 31C-hinge plate; 32-hinge axis; 32A-boss; 32B-external threads; 33-double torsion spring; 33A-a pressing end; 33B-Link end; 34-nut.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Specifically, the variable transfer frame realizes the volume change through the relative telescopic motion of one transfer frame relative to the other transfer frame, so that a proper volume can be set according to actual needs to be used for containing articles such as clothes, washing and protecting articles and the like.

Referring to fig. 1 to 13, an embodiment of the present invention provides a door hinge connecting device, which includes a door body 10, a door support 20, and a hinge assembly 30, in which the door body 10 and the door support 20 are applied to a drum washing machine, and in addition, the door body 10 and the door support 20 may also be applied to other occasions according to actual needs, for example, the door body 10 and the door support 20 may also be applied to a storage box, an express delivery cabinet, and the like. The door supporter 20 is provided with an opening 21 for opening or closing the door body 10, and a user can take and place an article through the opening 21. The hinge assembly 30 is rotatably connected with the door body 10 and the door support member 20, the hinge assembly 30 comprises a hinge frame 31, a hinge shaft 32 and a double torsion spring 33, the hinge frame 31 comprises a hinge seat 31A and a hinge leaf 31B which are oppositely arranged, so that the hinge seat 31A and the hinge leaf 31B are respectively arranged on the door body 10 and the door support member 20, the hinge seat 31A is fixed on the door body 10, two ends of the hinge shaft 32 are fixed with the door support member 20 and penetrate through the hinge leaf 31B so that the hinge leaf 31B rotates around a shaft along with the hinge seat 31A in the movement of opening or closing the opening 21 of the door body 10, the double torsion spring 33 is sleeved on the hinge shaft 32, the double torsion spring 33 comprises two abutting ends 33A which are parallel to each other and used for receiving abutting force of the hinge leaf 31B, and under the same effective number of turns, double torsion springs 33 can generate double elastic deformation force, and the hinge assembly. Referring still further to fig. 6 to 13, when the door body 10 shown in fig. 6 to 9 is in the fully opened state, the fully opened state corresponds to the door body 10 being rotated by a preset maximum angle with respect to the door supporter 20 so that the opening 21 is opened to a maximum extent, it should be noted that the preset maximum angle may be set according to actual needs, and an appropriate double torsion spring 33 and a specific assembly size are selected according to the set angle, and in the present embodiment, the preset maximum angle is set to 120 °. In this state, the two pressing ends 33A are not pressed by the hinge leaf 31B, and when the door 10 shown in fig. 10 and 11 is in a half-opened state, in this way, when this state occurs to close the opening 21, the two pressing ends 33A are pressed by the hinge leaf 31B to generate a certain elastic deformation amount of the double torsion spring 33, correspondingly, when this state occurs to automatically open the opening 21, the two pressing ends 33A provide an elastic deformation force corresponding to the certain elastic deformation amount, when the door 10 shown in fig. 12 and 13 further closes the opening 21 until the door 10 is completely closed, the door 10 is latched with the door supporter 20, so that, when this state occurs to close the opening 21, the pressing forces of the two pressing ends 33A by the hinge leaf 31B are further increased to the maximum to maximize the elastic deformation amount of the double torsion spring 33, correspondingly, when the state occurs in the automatic opening of the opening 21, only the door body 10 and the door support member 20 need to be unlocked, and the elastic restoring force generated by the double torsion spring 33 with the maximum elastic deformation acts on the hinge leaf 31B to rotate around the hinge shaft 32, so that the hinge seat 31A is driven to drive the door body 10 to rotate to the preset maximum angle relative to the door support member 20 until the elastic restoring force disappears, therefore, the door hinge connecting device can realize the automatic bouncing of the door body 10 relative to the door support member 20 to open the opening 21, and improve the use experience of a user.

Referring to fig. 3 and 7, in an embodiment, a notch 31B1 is provided at the middle of the hinge leaf 31B, a double torsion spring 33 is disposed in the notch 31B1, and a notch 31B2 of the notch 31B1 is used for applying an abutting force to the two abutting ends 33A, so that the double torsion spring 33 is disposed through the notch 31B1, which can both limit the main body of the double torsion spring 33 well and reliably apply an abutting force to the two abutting ends 33A and receive an elastic restoring force from the two abutting ends 33A through the notch 31B2 during the rotation of the hinge leaf 31B relative to the hinge shaft 32, thereby ensuring a smooth rotation speed of the automatic opening door 10.

Referring to fig. 2 with emphasis, in one embodiment, the hinge leaf 31B further includes cylindrical through slots 31B3 at both sides of the notch 31B1, and the hinge shaft 32 is inserted into each through slot 31B3, so that both ends of the hinge shaft 32 are rotatably engaged with the two cylindrical through slots 31B3, thereby ensuring the overall synchronism and reliability of the rotation of the hinge leaf 31B relative to the hinge shaft 32.

Referring to fig. 4 and 5, in an embodiment, the double torsion spring 33 further includes a link end 33B, the two pressing ends 33A and the link end 33B extend along the radial direction of the double torsion spring 33 at an included angle, which can be set according to the above-mentioned preset maximum angle to generate a corresponding elastic restoring force, the two pressing ends 33A are symmetrically arranged relative to the hinge end in the axial direction of the double torsion spring 33, in the state that the door body 10 opens the opening 21, more specifically, in the state that the door body 10 shown in fig. 11 is in the fully opened state, the link end 33B abuts on the position-limiting rib 22 of the door support 20, so that the collision friction between the door body 10 and the door support plate can be prevented, the appearance of the door support plate is prevented from being affected, and, since the force bearing points of the double torsion spring 33 are three upper, middle and lower, the two pressing ends 33A as the upper and lower force bearing points of the double torsion spring 33 abut on the hinge leaf 31B, the linking end 33B as the middle stress point of the double torsion spring 33 is abutted against the limiting rib, the upper stress point and the lower stress point are symmetrical relative to the middle stress point, double reaction force can be formed, and the middle stress point can reduce the damage of the double torsion spring 33 to the double torsion spring and the door support member 20 under the mutual action force.

Referring to fig. 3, in an embodiment, the door supporter 20 is provided with the opening 23, the hinge bracket 31 further includes a curved hinge plate 31C between the hinge seat 31A and the hinge leaf 31B, and the hinge plate 31C moves in the opening 23 when the hinge leaf 31B rotates about the hinge shaft 32, so that the hinge seat 31A generates a pressing force against the pressing ends 33A by the hinge leaf 31B when the hinge leaf 31B is subjected to the elastic restoring force of the pressing ends 33A to automatically drive the door 10 to open the opening 21 or when the door 10 closes the opening 21, the hinge leaf 31B is driven to rotate about the hinge shaft 32, and thus, the opening 23 can provide a sufficient space for the movement of the hinge plate 31C therein and the edge of the opening 23 can prevent an unexpected external force from acting on the hinge plate 31C. In addition, the hinge bracket 31 including the hinge leaf 31B, the hinge base 31A and the hinge plate 31C is integrally formed and made of a metal material so as to have sufficient rigidity to support and rotate the door body 10.

In one embodiment, the door supporting member 20 is further provided with a protrusion 24 surrounding the opening 23, the protrusion 24 abuts against the hinge seat 31A in a state where the door 10 closes the opening 21, that is, the door 10 is in a fully opened state, the protrusion 24 can enhance the abutting force of the door supporting plate against the hinge seat 31A, prevent the door supporting plate from being subjected to collision friction by the hinge seat 31A, and avoid affecting the appearance of the door supporting plate, and the height of the protrusion 24 is set to ensure that the door 10 and the door supporting plate are reliably locked and unlocked.

Referring to the drawings, in one embodiment, the hinge assembly 30 further includes a nut 34, the door supporting bracket is provided with a pair of bushings 25 having through holes, the hinge shaft 32 is inserted into the through holes and has bosses 32A and external threads 32B at two ends thereof, the bosses 32A abut against an end of one of the bushings 25, the external threads 32B extend out of the other bushing 25 and are screwed with the nut 34, the nut 34 abuts against an end of the other bushing 25, and the bosses 32A may be provided with screw threads on an outer circumference thereof to facilitate a user to screw the bosses 32A to tighten the nut 34. Therefore, since the hinge base 31A can be firmly fixed to the door supporting plate, the reliability of the rotation of the hinge leaf 31B is secured.

Referring to the drawings with emphasis, in one embodiment, it is characterized in that a pair of bosses 25 are protruded on the door supporting bracket, and a reinforcing rib 26 is provided between the pair of bosses 25 and the through hole, and the strength of the pair of bosses 25 is enhanced by providing the reinforcing rib 26 to improve the assembling stability with the hinge base 31A.

In conclusion, the door hinge connecting device of the invention can drive the door body 10 to be automatically opened through the elastic restoring force formed by the hinge assembly 30 under the elastic deformation of the double torsion spring 33, thereby improving the user experience.

Referring to fig. 1 to 13 with emphasis, another embodiment of the present invention provides a drum washing machine, which includes any one of the door hinge connecting devices disposed therein, so that the drum washing machine has any beneficial effect of the door hinge connecting device, which is not described herein again, and in addition, the drum washing machine may be particularly a drum washing machine with a door 10 embedded therein, and the door 10 does not interfere with the door supporting plate during opening and can be opened at a large angle. The door body 10 is the revolving door that has glass bowl 12, and door support piece 20 is the front panel, and opening 21 is the clothing and gets and put the mouth, and the revolving door passes through hinge subassembly 30 and rotationally installs on the front panel in order to open or close the clothing and get and put the mouth, consequently, after drum type washing machine has washed the clothing, because the revolving door can be opened for the front panel is automatic when the revolving door has been opened to needs, has greatly improved user and has used the experience and feel, and convenience of customers directly gets the clothing of taking and having washed.

In one embodiment, the front panel is provided with a hinge assembly 30 and a door lock mechanism 27 on two sides of the opening 21, the rotating door is provided with a door hook 11 which is matched with the door lock mechanism 27 to lock the rotating door, the door lock mechanism 27 is provided with an electromagnetic coil and a cam slider, the cam slider is movably arranged in the electromagnetic coil, the door hook 11 is provided with a limiting groove, and after the rotating door is completely closed, the cam slider is inserted into the limiting groove of the door hook 11 to realize mutual locking; after the electromagnetic coil is electrified, the electromagnetic force of the electromagnetic coil acts on the cam slider to enable the cam slider to move and separate from the limiting groove, and then the rotating door is automatically opened under the action of the double torsion springs 33. Therefore, before the drum-type washing machine has washed the clothing, revolving door and front panel are by firm ground hasp, guarantee the safe operation of washing procedure, finish washing the clothing promptly at the washing procedure operation, and the revolving door pops open for the front panel is automatic, thereby both avoided the user to forget timely sunning clothing and prevent bacterial growing and peculiar smell production, improved user again and used experience and felt.

It should be added that the above-mentioned related structure with the door-closing support can be arranged either directly on the door support for cost saving or on a fixed plate fixed on the door support for strength.

The relative arrangement of the components set forth in these embodiments does not limit the scope of the invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A door hinge connecting device, comprising:

the door comprises a door body and a door supporting piece, wherein the door supporting piece is provided with an opening for opening or closing the door body;

a hinge assembly rotatably connecting the door body and the door support member, the hinge assembly comprising:

the hinge frame comprises a hinge seat and a hinge leaf which are oppositely arranged, and the hinge seat is fixed on the door body;

the two ends of the hinge shaft are fixed with the door supporting piece and penetrate through the hinge leaf so that the hinge leaf rotates around a shaft along with the hinge seat in the movement of opening or closing the opening of the door body;

the double torsion springs are sleeved on the hinge shafts and comprise two pressing ends which are parallel to each other and used for receiving pressing force of the hinge leaves, and the pressing ends are pressed by the hinge leaves when the door body is closed in the opening state, so that elastic deformation of the double torsion springs is maximized.

2. The door hinge connecting device according to claim 1, wherein a notch is provided in the middle of the hinge leaf, the double torsion spring is disposed in the notch, and the lacking edge of the notch is used for applying the abutting force to the two abutting ends and receiving the elastic restoring force from the two abutting ends.

3. The door hinge connecting device according to claim 2, wherein the hinge leaf further comprises cylindrical through grooves at both sides of the notch, and the hinge shaft is inserted into each through groove.

4. The door hinge connecting device according to claim 1, wherein the double torsion spring further comprises a hinge end, the two abutting ends and the hinge end extend in a radial direction of the double torsion spring at an included angle, the two abutting ends are symmetrically arranged relative to the hinge end in an axial direction of the double torsion spring, and the hinge end abuts against a limiting rib arranged on the door support member when the door body opens the opening.

5. The door hinge connecting device according to claim 1, wherein the door supporter is provided with an opening, and the hinge bracket further includes a hinge plate having an arc shape between the hinge base and the hinge leaf, the hinge plate moving in the opening when the hinge leaf rotates about the hinge shaft.

6. The door hinge connecting device according to claim 5, wherein the door supporting member is further provided with a projection around the opening, the projection abutting against the hinge base in a state where the door body closes the opening.

7. The door hinge connecting device according to claim 1, wherein the hinge assembly further comprises a nut, the door support frame is provided with a pair of shaft sleeves with through holes, the hinge shaft is arranged in the through holes in a penetrating manner, bosses and external threads are respectively arranged at two ends of the hinge shaft, the bosses are abutted against the end portions of one of the shaft sleeves, the external threads extend out of the other shaft sleeve and are fixed with the nut in a threaded manner, and the nut is abutted against the end portion of the other shaft sleeve.

8. The door hinge connecting device according to claim 7, wherein the pair of bosses are protruded from the door supporting bracket, and a reinforcing rib is provided between the pair of bosses and the through hole.

9. A drum washing machine comprising the door hinge connecting device according to any one of claims 1 to 8, wherein the door body is a swing door having a glass bowl, the door supporting member is a front panel, the opening is a laundry access opening, and the swing door is rotatably mounted on the front panel by a hinge assembly to open or close the laundry access opening.

10. A drum washing machine as claimed in claim 9 wherein the front panel is provided with a hinge assembly and a door lock mechanism on each side of the opening, the revolving door is provided with a door hook cooperating with the door lock mechanism to lock the revolving door, the door lock mechanism is provided with an electromagnetic coil and a cam slider, the cam slider is movably disposed in the electromagnetic coil, the door hook is provided with a limit slot, the cam slider is inserted into the limit slot of the door hook to achieve mutual locking after the revolving door is completely closed, electromagnetic force of the electromagnetic coil acts on the cam slider to move the cam slider and disengage the limit slot after the electromagnetic coil is energized, and the revolving door is automatically opened under the action of the double torsion spring.

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