WO2018028551A1

WO2018028551A1 - Top loading-type washing machine door cover assembly and washing machine

Info

Publication number: WO2018028551A1
Application number: PCT/CN2017/096336
Authority: WO
Inventors: 孙思成; 刘杰; 王佑喜; 林雪锋; 才智; 徐鹏飞
Original assignee: 青岛海尔洗衣机有限公司
Priority date: 2016-08-12
Filing date: 2017-08-08
Publication date: 2018-02-15
Also published as: CN107723999A; CN107723999B

Abstract

Disclosed are a top loading-type washing machine door cover assembly and a washing machine. The door cover assembly comprises a door cover (1) and a damping structure (2), wherein the damping structure (2) is a linear damper arranged on a control panel base (10) of the washing machine, and the damping structure (2) is in contact with an inner side of the door cover (1). In the process of opening the door cover (1), the damping structure (2) provides an upward jacking force, such that it is easy for a user to open the door cover (1), thereby reducing the force required by the arm of the user. In the process of closing the door cover (1), the damping structure (2) provides an upward damping force, thereby slowing down the speed of the door cover (1) going down, and improving the safety of closing the door cover (1). A contact point between the damping structure (2) and the inner side of the door cover (1) is at a distance from an axis of a rotating shaft of the door cover (1), having an arm of force of a certain length, wherein same provides a large moment of force for the door cover (1). The structure of the linear damper is simple and has a high stability, thereby facilitating the improvement of the product quality and the reduction in cost.

Description

Top-loading washing machine door cover assembly and washing machine

Technical field

[0001] The present invention relates to the technical field of washing machines, and in particular to a washing machine door cover assembly and a washing machine having the same.

Background technique

[0002] A top-loading type washing machine is provided with a door cover that is rotated upwardly, and a door cover is disposed in a mouth of a control panel seat located at the top of the washing machine, and a rear side of the door cover and a rear portion of the control tray seat pass through a pivot Turn the connection and the door cover can be opened up or closed. When the door cover is closed, the door cover is easily closed by gravity. At present, a rotary damper is generally arranged between the door cover and the control disc seat, and the damper is disposed at the hinge of the door cover to increase the smoothness of the slamming door and to avoid the wear caused by the rapid movement of the components.

technical problem

[0003] A common type of damper is a torsion spring type damper, which mainly keeps the plastic door cover of the washing machine in a closed state or keeps the cover of the washing machine stable; however, the disadvantage of the torsion spring type damping is that when the washing machine door is When the cover is closed, the torsion spring will generate a downward force to accelerate the falling of the door cover, posing a threat to the personal safety of the use. Another type of damper is a rotary hydraulic or pneumatic damper. Compared with the torsion spring damper, it has the advantages of large damping force, can reduce the falling of the door cover, and ensure safety. However, the rotary hydraulic or pneumatic damper has the impulse. The buffer is mainly concentrated in the hinge structure, which makes the structure more complicated, the installation is troublesome, and different door cover structures need to be separately designed and processed, and the material precision is high, so that the cost of the rotary gas spring damper is high.

[0004] In addition, in recent years, various circuits, wires, and display components have been integrated on the door cover of the washing machine, so that the weight of the door cover is also increased, and a damper is required to provide a larger damping force. The existing rotary damper From the structural analysis, the force wall of the action is small, and the resistance torque that can be provided is limited, which cannot meet the requirements of the heavy door cover.

Problem solution

Technical solution

[0005] The present invention is directed to the technical problem existing in the prior art, and provides a top cover type washing machine door cover assembly, The linear damping structure is provided, the structure is simple and reasonable, and the door cover can be provided with a large torque.

[0006] In order to achieve the above technical purpose, the present invention is implemented by the following technical solutions:

[0007] A top-loading type washing machine door cover assembly includes a door cover and a damping structure, wherein the damping structure is a linear damper disposed on a control panel of the washing machine, and the damping structure is in contact with an inner side of the door cover .

[0008] Further, an axis of the damping structure is perpendicular to a plane where the door cover is closed.

[0009] Further, the top surface of the damping structure has a supporting slope for providing support for the door cover in the snoring state.

[0010] Further, the top surface of the damping structure further has a force receiving surface that is forced under the closed state of the door cover.

[0011] Further, the top surface of the damping structure further has an arc damping surface for providing a pushing force and a damping force respectively during the snoring and closing process of the door cover.

[0012] Further, the force receiving plane, the curved damping surface and the supporting inclined surface are disposed in order from front to back.

[0013] Further, the outer side of the damping structure is provided with an external thread, and the control disc holder is provided with an internal thread groove matched with the external thread, and the damping structure is screwed and fixed to the internal thread. Inside the slot.

[0014] Further, a reinforcing rib is disposed on a periphery of the internal thread groove.

[0015] Further, a reinforcing member is disposed on an inner side of the door cover, and the reinforcing member is provided with an inward arcuate protrusion, and the arcuate protrusion is in contact with a top surface of the damping structure.

[0016] Further, the reinforcing member is a spring piece disposed in a front-rear direction, and the arc-shaped protrusion is a deformation portion of the elastic piece, and a front end of the elastic piece is fixed on the door cover.

[0017] Further, a fixing groove for fixing the elastic piece is disposed on an inner side of the door cover, and a rear end of the fixing groove is provided with a sealing receiving cavity extending backward, and a rear end of the elastic piece is located at the Accommodate the cavity.

[0018] Further, the damping structure comprises a damping cylinder and a piston rod, and the piston rod is provided with a protrusion protruding radially outward for triggering the safety of the door cover.

[0019] The present invention further provides a washing machine, comprising a box body, a control disc seat on the box body, The structure is simple and reasonable, and the assembly is simple, the performance is reliable, and the door cover can be provided with a large torque.

[0020] Further, a safety gate is disposed in the control panel.

Advantageous effects of the invention

Beneficial effect

[0021] The top cover type washing machine door cover assembly provided by the present invention is provided in the washing machine control by the damping structure a linear damper on the disk holder, and the damping structure is in contact with the inner side of the door cover, that is, the damping structure can provide an upward force; that is, during the door cover beating process, the damping structure provides an upward thrust, which is convenient The user knocks on the door cover to reduce the force of the user's arm; during the closing of the door cover, the damping structure provides an upward damping force, slows down the speed of the door cover, improves the safety of closing the door cover; and the damping structure and the inner side of the door cover The contact point has a certain distance from the axis of the shaft of the door cover, that is, a force arm having a certain length, so that the damping structure can provide a large torque to the door cover, ensure product quality, improve customer satisfaction; and linear damper The utility model has the advantages of simple structure, reliable performance and high stability, which is beneficial to improving product quality and reducing cost; the damping structure is directly fixedly mounted on the disc holder, and the installation and fixing with respect to the rotary damper is simple and convenient, and is advantageous for improving the assembly speed. Further reduce costs.

Brief description of the drawing

DRAWINGS

1 is a schematic structural view of an embodiment of a door cover assembly for a top-loading type washing machine according to the present invention;

2 is a schematic structural view of another angle in FIG. 1;

3 is an enlarged schematic structural view of a region A in FIG. 2;

4 is a cross-sectional structural view of the door cover of FIG. 1 after being closed;

Figure 5 is a schematic enlarged view of the damping structure of Figure 1;

6 is a schematic diagram of a front view structure of FIG. 5.

BEST MODE FOR CARRYING OUT THE INVENTION

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention.

[0029] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "front", "back", "upper", "lower", etc. are based on the normal use state of the washing machine, relative to the user. The <RTI ID=0.0>> </ RTI> </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt;

[0030] Referring to FIG. 1 to FIG. 6 , an embodiment of a top cover type washing machine door cover assembly according to the present invention is provided. In this embodiment, a door cover assembly of a top-loading type washing machine is disposed on the control panel 10, including Door cover 1 and door cover 1 The damper structure 2 is fitted, wherein the damper structure 2 is a linear damper disposed on the control disc housing 10, and the damper structure 2 is in contact with the inner side of the door cover 1.

[0031] In the embodiment, the damping structure 2 is a linear damper disposed on the control panel 10, and the damping structure 2 is in contact with the inner side of the door cover 1 so that the damping structure 2 can provide an upward force; During the beating process of the door cover 1, the damping structure 2 provides an upward thrust, which is convenient for the user to hit the door cover 1 and reduce the force of the user's arm; during the closing process of the door cover 1, the damping structure 2 provides an upward damping force, and the door is slowed down. The speed at which the cover 1 descends increases the safety of closing the door cover 1; and the contact point between the damping structure 2 and the inner side of the door cover 1 has a certain distance from the axis of the shaft of the door cover 1, that is, a force arm having a certain length, so that The damping structure 2 can provide a large torque to the door cover 1 to ensure product quality and improve customer satisfaction; and the linear damper has simple structure, reliable performance and high stability, which is beneficial to improve product quality and reduce cost; 2 It can be directly fixed on the disc holder. It is simple and convenient to install and fix relative to the rotary damper, which is beneficial to improve the assembly speed. To further reduce costs.

[0032] In this embodiment, referring to FIG. 4, in the closed state of the door cover 1, the door cover 1 is pressed against the damping structure 2, and the damping structure is in a compressed state by the gravity of the door cover 1; The axis of the door is perpendicular to the plane in which the door cover 1 is closed, which is advantageous for increasing the contact area with the damping structure 2 in the closed state of the door cover 1, so that the force per unit area is reduced, which is advantageous for the stability of the structure of the damping structure 2. .

[0033] In this embodiment, referring to FIG. 3 and FIG. 5, the damping structure 2 includes a damping cylinder 21 and a piston rod 22, and an external thread is disposed outside the piston rod 22, and a piston rod is disposed on the control disc base. The external thread on the 22 matches the internal thread groove 101, and the damping structure 2 is screwed and fixed in the internal thread groove 101. In order to reinforce the structural rigidity and strength of the fixed internally threaded groove 101, reinforcing ribs are provided on the periphery of the internally threaded groove 101 to ensure the robustness of the damping structure 2 during use. The internal thread groove 101 does not need to be separately designed, and can be injection molded with the control disc holder 10; the preferred internal thread groove 101 is disposed on the control disc holder 10 on both sides of the water injection port of the washing machine.

[0034] In this embodiment, referring to FIG. 1 and FIG. 6, the top surface of the damping structure 2 is also the top surface of the piston rod 22, and the top surface of the piston rod 22 is in contact with the inner side of the door cover 1 as a door cover. 1 provides an upward force; the door cover 1 has a closed state, a snoring state, and a snoring process and a closing process that switch between a closed state and a snoring state, according to the cooperation of the damper structure 2 and the door cover 1, at the piston rod The top surface of 22 is a force receiving plane 223, a curved damping surface 222 and a supporting inclined surface 221 from front to back. [0035] Specifically, the supporting inclined surface 221 provides a supporting force for the door cover 1 in the snoring state, so that the door cover 1 is hovered after contacting the supporting inclined surface 221, or the damping structure 2 passes the supporting inclined surface 221 to make the door cover 1 Keeping in the snoring state, by setting the damping force of the damper structure 2 to be slightly larger than the component force of the door cover 1 in the vertical direction of the supporting slanting surface 221, it is possible to maintain the snoring state of the door cover 1 in a non-human condition; By setting the support slope 221, the standing function of the door cover 1 in the snoring state is ensured, which facilitates the user's placement and removal of the clothes.

[0036] The arc damping surface 222 is a contact surface of the door cover 1 with the inner side of the door cover 1 during the snoring or closing process, and the arc damping surface 222 is disposed so that the damper structure is in the process of slamming and closing the door cover 1 2 The thrust and damping forces are respectively provided for the door cover 1 through the curved damping surface 22 2 to ensure the safety of the door cover 1 and improve customer satisfaction. When the user finishes putting the clothes on, the door cover 1 is slightly applied, and the force receiving portion of the damping structure 2 reaches the curved damping surface 222 from the supporting inclined surface 221, and the pressure of the door cover is slightly larger than the damping force of the damping structure 2, in the washing machine door The cover 1 slowly descends under the action of gravity. After passing through the smooth transition zone to the area of the force receiving surface, the entire gravity of the entire washing machine cover is converted into the pressure on the force receiving surface of the damper.

[0037] The force receiving plane 223 is a contact surface of the door cover 1 with the inner side of the door cover in the closed state, that is, the force plane 223 is perpendicular to the axis of the damping structure 2, so that the gravity of the door cover is pressed against the force plane 223. The damping force of the damping structure 2 is smaller than the gravity of the door cover, and the piston rod 22 is compressed, and the closed state of the door cover 1 is maintained.

[0038] In this embodiment, as shown in FIG. 3, a reinforcing member 11 is disposed on the inner side of the door cover, and the reinforcing member 11 is provided with an inward arcuate protrusion 111, and the arcuate protrusion 111 and the damping structure 2 are provided. The top surface is in contact with the supporting slope 221 and the curved damping surface 222; however, due to the length of the piston rod 22 extending, the force plane 223 may not be in contact with the curved projection 111. The supporting inclined surface 221 of the damping structure 2 and the curved damping surface 222 are in contact with the curved convex protrusion 111, and the working state of the piston rod 22 of the damping structure 2 is extended; the force receiving plane 223 is in contact with the inner side of the door cover 1 and is a damping structure. The piston rod 22 of 2 is retracted. The strength of the contact of the door cover 1 with the damper structure 2 is increased by providing the reinforcing member 11. During the closing process of the door cover 1, the contact surface of the damping structure 2 is transferred from the supporting inclined surface 221 to the force receiving plane 223 via the curved damping surface 222, and the force applied to the door cover 1 of the washing machine is gradually increased during this operation. Until the gravity of the entire upper cover acts on the damping structure 2; or conversely, during the snoring of the door cover 1, the magnitude of the friction between the curved damping surface 222 of the damping structure 2 and the door 1 of the washing machine is directly related to the door The flexibility of the movement of the cover; thus, the reinforcing member 11 is provided with an inwardly curved projection 111, and the curved damping surface 222 and the curved projection 111 of the damping structure 2 during the opening or closing of the door cover 1 Contact, and relative movement, help to reduce the friction between the two, improve the arc resistance The flexibility of the relative movement of the nibble 222 with the curved projection 111 ensures a smooth working condition and an improved service life.

In the embodiment, the reinforcing member 11 is a resilient piece disposed in the front-rear direction, wherein the curved protrusion 111 is a deformed portion of the elastic piece, and the front end of the elastic piece is fixed on the door cover 1 and the rear end is a free end. When the door cover 1 is in the closed state, the curved protrusion 111 on the elastic piece contacts the top surface of the control disk holder 10, and the curved protrusion 111 is pressed by the door cover 1 so that the curved protrusion 111 is slightly extended, that is, The height is lowered, and the curved protrusion 111 does not affect the fastening of the door cover 1. After the door cover 1 is smashed, the arcuate projection 111 of the elastic piece is reset, and the piston rod 22 of the same damping structure 2 protrudes upward, and the arcuate projection 111 is in contact with the arcuate damping surface 222 of the piston rod 22, and the damping structure 2 The upward thrust is transmitted to the door cover 1 through the curved protrusion 111; the arcuate protrusion 111 comes into contact with the support slope 221 as the door cover 1 is smashed and reaches the snoring state. By providing the reinforcing member 11 as a spring piece, on the one hand, the friction between the damping structure 2 and the reinforcing member 11 of the door cover 1 is reduced, and on the other hand, the rigidity of the contact portion of the damping structure 2 and the door cover 1 is ensured. And the reinforcing member 11 is a spring piece, so that the structural shape of the arcuate protrusion 111 can be changed, so that the arcuate protrusion 111 is in elastic contact with the piston rod 22 to increase the cushioning property; and the top surface of the control panel 10 is not disposed. The relief structure of the curved protrusion 111. By providing the curved protrusion 111, in the snoring state of the door cover 1, the snagging angle of the door cover 1 is larger than the inclination angle of the support slope 221, that is, the inclination angle of the door cover 1 is large, so that the gravity of the door cover 1 is The separation and separation in the vertical direction will be small, that is, the torque for driving the closing direction of the door cover 1 is small, which is advantageous for increasing the stability of the door cover 1 in the snoring state.

[0040] In this embodiment, as shown in FIG. 3, in order to install the elastic piece, a fixing groove 12 for fixing the elastic piece is disposed on the inner side of the door cover 1, and a rearward extending end is provided at the rear end of the fixing groove 12. The sealed receiving cavity, the rear end of the elastic piece is located in the accommodating cavity, such that the curved protrusion 111 is deformed, and the rear end of the elastic piece can be expanded and contracted in the accommodating cavity.

[0041] In this embodiment, as shown in FIG. 4, a safety switch 3 is provided in the control panel 10, and the safety switch is a micro-motion switch associated with the door cover 1 for ensuring the cover of the washing machine. Stop function to ensure safety. The piston rod 22 is provided with a protrusion 224 protruding radially outward, and the protrusion 224 is used to trigger the safety switch 3. When the door cover 1 is in the closed state, the gravity of the door cover 1 keeps the piston rod 22 of the damping structure 2 in a compressed state, and the bump 224 acts on the safety switch 3, so that the safety switch 3 is in a closed state, and the washing machine control system is normal. Operation; When the door cover 1 is smashed, the 吋 piston rod 22 moves upward, and the rib 224 is disengaged from the safety 3 3, so that the safety 幵 Close 3, if the washing machine is in normal operation, the door cover 1 starts to slam the piston rod 22 of the damping structure 2, and the safety switch 3 (broken state) sends a door cover abnormal signal to the washing machine control system, the control system Stop the operation of the washing machine in an instant and give an alarm. By setting the bump 224 for triggering the safety switch 3, the sensitivity of the safety switch can be ensured, and the structure is simple, and only one bump 2 24 is needed on the piston rod 22, and no special safety setting is required. The linkage trigger structure helps to reduce costs.

[0042] In this embodiment, as shown in FIG. 4, the upper end surface of the protrusion 224 is flush with the force plane 223, and a notch 102 matching the protrusion 224 is disposed at the internal thread groove 101. When the cover 1 is in the closed state, the piston rod 22 is compressed, the protrusion 224 is located in the notch 102, and the upper end surface of the protrusion 224 is flush with the force receiving plane 223, so that the piston rod 22 can be closed in the closed state of the door cover 1. The contact area with the inner side of the door cover 1 increases the force performance of the piston rod 22.

In the present embodiment, the door cover 1, the damper structure 2 and the safety guard 3 are all mounted on the washing machine control tray base 10.

From the perspective of mechanical structure design: During the process of door cover 1 snoring, the damper structure 2 provides upward thrust, which is convenient for the user to hit the door cover 1 and reduce the force of the user's arm; during the closing process of the door cover 1, the damping structure 2 Provides upward damping force, slows down the speed of the door cover, improves the safety of closing the door, protects the user from injury; analyzes from the control system: the washing machine is in the closed state, the damping structure 2 acts on the safety gate 3 The safety gate 3 is in the closed state, the washing machine control system is in normal operation; the washing machine door cover is opened, the damping structure 2 is bounced, the safety is closed 3 (broken state), the door cover 1 abnormal signal is sent to the washing machine control system, and the control is performed. The system instantly stops the operation of the washing machine and gives an alarm to protect the user from the damage of the washing machine. The invention designs a door cover damping structure integrated with the function of triggering the safety function, and comprehensively optimizes the design from the mechanical structure and the control system to ensure the safety of the washing machine user.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art may use the above-disclosed technical contents to change or modify the equivalent changes. An equivalent embodiment. However, any simple modifications, equivalent changes and modifications made to the above embodiments in accordance with the technical spirit of the present invention are still within the scope of protection of the present invention.

Claims

Claim

A top cover type washing machine door cover assembly, comprising a door cover and a damping structure, wherein the damping structure is a linear damper disposed on a control panel of the washing machine, the damping structure and an inner side of the door cover contact.

The door cover assembly of claim 1 wherein the top surface of the damping structure has a support ramp that provides support for the door cover in a snoring state.

The door cover assembly according to claim 1, wherein the top surface of the damper structure further has a force receiving surface that is forced in a closed state of the door cover.

The door cover assembly of claim 1 wherein the top surface of the damper structure further has an arcuate damping surface that provides a thrust and damping force for the door cover during snoring and closing, respectively.

The door cover assembly according to any one of claims 1 to 4, characterized in that: the outer side of the damping structure is provided with an external thread, and the control disc holder is provided with an internal thread matched with the external thread a groove, the damping structure is screwed and fixed in the internally threaded groove.

The door cover assembly according to any one of claims 1 to 4, wherein a reinforcing member is disposed on an inner side of the door cover, and the reinforcing member is provided with an inward arcuate protrusion, the arc shape The projection is in contact with the top surface of the damping structure.

The door cover assembly according to claim 6, wherein the reinforcing member is a spring piece disposed in a front-rear direction, the curved protrusion is a deformation portion of the elastic piece, and a front end of the elastic piece is fixed to the On the door cover.

The door cover assembly according to claim 7, wherein a fixing groove for fixing the elastic piece is disposed on an inner side of the door cover, and a rear end of the fixing groove is provided with a sealing receiving cavity extending backward. The rear end of the elastic piece is located in the receiving cavity.

The door cover assembly according to any one of claims 1 to 4, wherein the damping structure comprises a damper cylinder and a piston rod, and the piston rod is provided with a radially outward convexity for triggering The safety of the door cover is a bump.

A washing machine comprising a box body and a control panel seat on the box body, wherein the control panel holder is provided with the door cover assembly according to any one of claims 1 to 9.