WO2019233376A1

WO2019233376A1 - Counterweight installation structure and washing machine

Info

Publication number: WO2019233376A1
Application number: PCT/CN2019/089818
Authority: WO
Inventors: 杨飞; 卢金波
Original assignee: 青岛海尔滚筒洗衣机有限公司
Priority date: 2018-06-04
Filing date: 2019-06-03
Publication date: 2019-12-12
Also published as: CN110552165A; CN110552165B

Abstract

A counterweight installation structure and a washing machine. The counterweight installation structure comprises a connecting bolt (3) and a connecting block (4) disposed on an outer drum (5). A threaded hole (41) is disposed in the connecting block, and the connecting bolt is disposed passing through a counterweight and threadedly connected to the threaded hole of the connecting block. Also disclosed is a washing machine having the counterweight installation structure. The counterweight installation structure and the washing machine having the same can prevent detachment of a counterweight.

Description

Counterweight mounting structure and washing machine

This application claims priority from a Chinese patent application with a filing date of June 4, 2018 and application number 201810565332.2, the entire contents of which are incorporated herein by reference.

Technical field

The present disclosure relates to the technical field of washing machines, for example, to a weight block mounting structure and a washing machine with the weight block mounting structure.

Background technique

The drum type washing machine has a drum, and the drum is horizontally or inclinedly disposed in the cabinet. The drum rotates alternately in both directions. The laundry is loaded in the drum, and the washing water is sent into the drum from an external water source. When the drum rotates, the laundry and washing water in the drum repeatedly fall from the top to the bottom, thereby washing the clothes. At the same time, vibration and noise are generated due to the rotation of the drum during the washing operation of the drum. In order to reduce such vibration and noise, a weight is mounted on the outer cylinder supporting and placing the rotatable drum to reduce the vibration and noise.

In the related art, the counterweight is directly fastened to the plastic screw column of the outer cylinder through self-tapping screws. This structure is prone to self-tapping screw slips and screw column breaks when the self-tapping screw penetrates the outer cylinder. In the process of using the washing machine, the weight may loosen or even break off.

Summary of the Invention

The present disclosure provides a counterweight block mounting structure and a washing machine, which can reliably connect the counterweight block to the outer cylinder and prevent screw slipping and breakage during the connection between the two.

An embodiment provides a weight block mounting structure, including a connection bolt and a connection block provided on an outer cylinder. The connection block is provided with a threaded hole, and the connection bolt is provided to pass through the weight block and communicate with the weight block. The threaded holes of the connection block are screwed.

An embodiment provides a washing machine. The washing machine includes an outer drum and the above-mentioned weight block mounting structure, and the weight block mounting structure is disposed on the outer drum.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded schematic view of a weight block mounting structure provided by an embodiment; FIG.

2 is a schematic structural diagram of a weight block mounting structure provided by an embodiment;

FIG. 3 is a partially enlarged view at A in FIG. 2; FIG.

4 is a schematic structural diagram of a mounting base according to an embodiment;

5 is a schematic structural diagram of a connection block according to an embodiment;

6 is a schematic structural diagram of another direction provided by an embodiment;

7 is a schematic structural diagram of an outer cylinder according to an embodiment;

FIG. 8 is a partial enlarged view at B in FIG. 7; FIG.

Figure 9 is a side view of the outer cylinder provided in Figure 7;

FIG. 10 is a partially enlarged view at C in FIG. 9.

In the picture:

1. Counterweights; 11. Mounting holes; 2. Mounting bases; 21; Connection holes; 22; Slots; 221; U-shaped grooves; 23. Fasteners; 24; Counterweight connection columns; 241; Through holes; 242, reinforcing ribs; 3, connecting bolts; 4, connecting blocks; 41, threaded holes; 42, protrusions; 43, internally threaded columns; 5, outer cylinders.

Detailed ways

In this embodiment, a weight block mounting structure is provided, and this structure can prevent the occurrence of the phenomenon of screw sliding wire and screw column breakage during the connection process. As shown in FIG. 1 and FIG. 2, the weight block installation structure includes a connection bolt 3 and a connection block 4 provided on the outer cylinder 5. The connection bolt 3 passes through the weight block 1 and is threadedly connected to the connection block 4 to realize the weight The block 1 is mounted on the outer cylinder 5. Since self-tapping screws are no longer used during installation, and the threaded holes are no longer directly provided on the outer cylinder 5, no problems such as slip wires and screw breakage will occur during the installation process.

Wherein, the connecting block 4 is made of metal, and the connecting block 4 is plugged or clamped on the outer cylinder 5. In an embodiment, the connecting block 4 can also be provided on the outer cylinder 5 by injection molding and connected with the outer cylinder 5 is a one-piece structure.

In the related art, the outer cylinder 5 is made of plastic. When the weight 1 is installed by self-tapping screws, the tightening force is small, which usually causes the problem of loosening the screws. In this embodiment, the connecting bolt 3 is a metal material. It is made that, during installation, the tightening torque between the connecting bolt 3 and the connecting block 4 is larger than that in the related art; therefore, the connecting force between the connecting block 4 and the connecting bolt 3 provided in this embodiment is large. Compared with the related art, the connection between the screw and the outer cylinder 5 and the connection between the screw and the weight block 1 are more tight and reliable, which can prevent the screw thread, the screw column from breaking during the installation process, and the weight block during the use of the washing machine. 1 Loosening problem occurs.

In an embodiment, as shown in FIG. 3 and FIG. 4, the weight block mounting structure includes a connection bolt 3 and a connection block 4 connecting the weight block 1 and the outer cylinder 5; the weight block 1 is installed outside through the connection bolt 3 A mounting hole 11 is provided on the outer side wall of the cylinder 5. The mounting hole 11 is a through hole and a countersink at the same time, which is convenient for concealing the connecting bolt 3. A mounting base 2 is provided, and the mounting base 2 is provided with a connection hole 21 coaxial with the mounting hole 11 and a slot 22 communicating with the connection hole 21, wherein the slot 22 and the connection hole 21 are respectively provided in the two phases of the mounting base. On the adjacent side wall, to ensure that the slot 22 and the connection hole 21 can be processed and communicated, and to ensure that the above-mentioned connection block 4 can be inserted into the slot 22, the connection bolt 3 passes through the mounting hole 11 and the connection hole 21 and connects with the connection block 4 Threaded connection.

In the above-mentioned weight block mounting structure, the connecting bolt 3 directly penetrates the mounting hole 11 and the connecting hole 21, and is then connected to the connecting block 4, and the connecting block 4 is inserted into the slot 22, and is a separate structure from the mounting seat, which can be positioned as required. Adjustment. During installation, since the mounting hole 11 and the connection hole 21 function as vias, it is convenient for the connection bolt 3 to pass through. Therefore, the connection bolt 3 is non-threaded with the installation hole 11 and the connection hole 21, so there will be no correlation. Problems with slip and breakage in technology. The position of the connecting block 4 can be adjusted by inserting it into the slot 22, so that the position of the screw hole will not be misaligned, and the problem of breakage of the slide wire and the connecting bolt 3 can be prevented.

As shown in FIG. 5, a protrusion 42 is provided downward from the bottom of the connection block 4. The protrusion 42 is configured to snap the connecting block 4 into the slot 22 as a whole, so as to prevent the connecting block 4 from shaking in the slot 22 and leaving the slot 22. The above-mentioned protrusions 42 exist in two forms. One is to directly provide the protrusions 42 at the bottom of the connection block 4. The protrusions 42 may be integrated with the connection block 4 or may be a separate structure; the other is a protrusion. The bump 42 is formed by stamping, as shown in FIG. 5 and FIG. 6, that is, the protrusion 42 is a bump 42 formed by punching the connecting block 4, and the bump 42 is an integrated structure with the connecting block 4. No matter how the protrusion 42 is obtained, it should be ensured that the connecting block 4 is locked after being inserted into the slot 22. The connecting block 4 is also provided with a screw hole 41 coaxial with the mounting hole 11. The protrusions 42 are provided along the outer circumferential direction of the screw hole 41. In one embodiment, the screw holes 41 may be uniformly arranged in the circumferential direction. The number of the protrusions 42 is provided around the threaded hole 41. The number of the protrusions 42 may be two or more. In this embodiment, the number of the protrusions 42 is four. The shape of the connection block 4 is a square structure. In other embodiments, The shape of the connecting block 4 may also be a circular or rectangular structure. The connecting block 4 is further provided with an internally threaded post 43 along the axial direction of the threaded hole 41, and the internally threaded post 43 communicates with the threaded hole 41.

As shown in FIG. 7 and FIG. 8, because the connecting block 4 is provided with an internally threaded column 43, the protruding end of the internally threaded column 43 at the bottom of the connecting block 4 may cause inconvenience or inability to insert the connecting block 4. Problem, in this embodiment, a U-shaped groove 221 is further provided at the bottom of the slot 22, and the threaded column 43 can slide into the U-shaped slot 221. After the connecting block 4 is inserted into the slot 22, the lower portion of the internally threaded column 43 is completely Enter the space formed by the U-shaped groove 221.

In order to make the connecting block 4 more stable, a fastening rib 23 is also provided at the bottom of the slot 22 in this embodiment (see FIG. 8). The width of the fastening rib 23 is small, and the function is mainly to cooperate with the protrusion 42 provided on the connection block 4 to clamp the connection block 4. The above-mentioned fastening ribs 23 are disposed on both sides of the U-shaped groove 221, and the slot 22, the fastening ribs 23, and the connection hole 21 are integrated with the outer cylinder 5 to facilitate the installation of the weight block 1. In actual installation, the fastening rib 23 cooperates with the protrusion 42 to make the connecting block 4 snap into the slot 22.

As shown in Figures 9 and 10, because the mounting hole 11 and the connection hole 21 are coaxially arranged, the installation hole 11 and the connection hole 21 need to be aligned before installation, and the connection bolt 3 can be inserted for installation; at the same time, the installation hole 11 and connection The hole 21 is connected by a connecting bolt 3 to connect the weight block 1 with the outer tube 5. After the installation is completed, the outer tube 5 and the weight block 1 may be shaken left and right, and the connecting bolt 3 may be subject to tensile stress in the radial direction. In order to solve the above-mentioned problem, in this embodiment, a side where the outer cylinder 5 and the weight block 1 meet is further provided with a weight connection post 24, and the weight connection post 24 is provided with a through hole 241 in the axial direction of itself, and a connecting bolt 3 can be threaded through the through hole 241 and the connection hole 21 to the connection block 4. In order to increase the strength of the weight connection post 24, reinforcing ribs 242 are provided on the outer side wall of the weight connection post 24 in the circumferential direction, and the reinforcement ribs 242 are evenly distributed on the outside of the weight connection post 24 in the circumferential direction.

The weight block installation structure provided in this embodiment, the connection bolt 3 is screwed with the metal connection block 4 because the connection bolt 3 passes through the mounting hole 11 on the weight block 1 and the connection hole 21 provided on the outer cylinder 5 The weight block 1 can be connected to the outer cylinder 5 and the mounting holes 11 and the connecting holes 21 are through holes. Therefore, when the connecting bolt 3 passes through the two holes, the problem of thread slipping and breakage does not occur. At the same time, the outer cylinder 5 A counterweight connection post 24 is provided on the side where the counterweight block 1 meets. The counterweight connection post 24 can guide and prevent shaking between the counterweight block 1 and the outer cylinder 5 to ensure the counterweight. The connection between the block 1 and the outer cylinder 5 is fastened.

A washing machine is also provided in this embodiment, and the washing machine includes a weight block mounting structure provided in this embodiment. The washing machine is specifically a drum washing machine.

Since the weight block 1 of the washing machine provided in this embodiment is installed through the connection bolt 3 and the connection block 4 to realize the connection between the weight block 1 and the outer cylinder 5, there will be no sliding wire and The problem of fracture can also make the connection between the weight 1 and the outer cylinder 5 stronger.

Claims

A weight block installation structure includes a connection bolt (3) and a connection block (4) provided on an outer cylinder (5), the connection block (4) is provided with a threaded hole (41), and the connection bolt ( 3) It is arranged to pass through the weight block (1) and be screwed with the threaded hole (41) of the connection block (4).
The weight block mounting structure according to claim 1, wherein the connection block (4) is plugged or snapped onto the outer cylinder (5).
The weight block mounting structure according to claim 1 or 2, further comprising a mounting base (2) provided on the outer cylinder (5), the mounting base (2) being provided with a connection hole (21) and A slot (22) communicating with the connection hole (21), the connection block (4) can be inserted into the slot (22), and the connection bolt (3) is arranged to pass through the connection hole ( 21) Threaded connection with the connecting block (4).
The weight block mounting structure according to claim 3, wherein a protrusion (42) is provided at the bottom of the connection block (4).
The weight block mounting structure according to claim 4, wherein the protrusion (42) is configured to be formed by punching on the connecting block (4), and the protrusion (42) and the slot (22) ) Bottom contact.
The weight block mounting structure according to claim 3, wherein a side of the connecting block (4) remote from the weight block (1) is further provided with an internally threaded post (43), the internally threaded post ( 43) communicates with the threaded hole (41), a U-shaped groove (221) is provided on a side of the slot (22) near the connecting block (4), and the U-shaped groove (221) is located on the internal thread Below the post (43), the internally threaded post (43) can slide into the U-shaped groove (221).
The weight block mounting structure according to claim 3, wherein a fastening rib (23) is provided on a side of the slot (22) near the connection block (4).
The weight block mounting structure according to claim 1, wherein the connection block (4) is made of metal, and the connection block (4) and the outer cylinder (5) are injection molded.
The weight block mounting structure according to claim 3, wherein a side of the mounting base (2) near the weight block (1) is further provided with a weight connection post (24), the weight connection The post (24) is provided with a through hole (241) communicating with the connection hole (21) along the axial direction of the column, and the connection bolt (3) can pass through the through hole (241) and the connection hole (241). 21) Threaded connection with the connecting block (4).
A washing machine comprises an outer cylinder (5) and a weight block mounting structure according to any one of claims 1-9, wherein the weight block mounting structure is disposed on the outer cylinder (5).