Pressure maintaining device for rear cover of outer barrel of washing machine

Abstract

The utility model discloses a pressure maintaining device for a rear cover of an outer barrel of a washing machine, which is used for assembling and pressure maintaining fitting of the rear cover of the outer barrel of the washing machine and an outer sealing ring and comprises a supporting seat, a positioning mechanism positioned on the seat surface of the supporting seat and a surrounding jacking mechanism positioned on the seat side of the supporting seat, the outer cylinder rear cover is coaxially located on the supporting seat and is radially and internally supported and positioned through the positioning mechanism; the surrounding jacking mechanism comprises a surrounding guide rail coaxial with the supporting base and a jacking part arranged on the surrounding guide rail, and the surrounding guide rail drives the jacking part to move around the outer barrel rear cover in the state that the jacking part jacks the outer sealing ring. The outer sealing ring is jacked and pressed in a surrounding walking mode, it is guaranteed that the outer sealing ring is tightly attached to the outer cylinder rear cover, and the outer sealing ring is prevented from cracking and falling off.

Description

TECHNICAL FIELD

[0001] The utility model belongs to washing machine parts assembly technical field, especially relate to a kind of pressure maintaining device of washing machine outer cylinder rear cover. BACKGROUND

[0002] As Figure 1 As shown in the assembly of washing machine outer cylinder rear cover 1, outer sealing ring 2 needs to be assembled on outer cylinder rear cover 1 for sealing, due to lack of form pressure maintaining measures for outer sealing ring 2 in the assembly process, and affected by the easy deformation characteristics of outer sealing ring itself structure, outer sealing ring is prone to cracking, resulting in falling off from outer cylinder rear cover, which brings trouble to assembly operation. SUMMARY

[0003] The utility model discloses a kind of pressure maintaining device of washing machine outer cylinder rear cover, by being carried out around walking top pressure to outer sealing ring, ensure that outer sealing ring is tightly attached with outer cylinder rear cover, avoid outer sealing ring cracking and falling off.

[0004] Technical scheme: to achieve the above object, a kind of pressure maintaining device of washing machine outer cylinder rear cover of the utility model, the pressure maintaining device is used for the assembly pressure maintaining attachment of washing machine outer cylinder rear cover and outer sealing ring, the pressure maintaining device includes support seat, the positioning mechanism in the seat surface of support seat and the around top pressure mechanism in the seat side of support seat;The outer cylinder rear cover is coaxially seated on support seat, and is positioned by the radial inner bracing positioning of the positioning mechanism;The around top pressure mechanism includes around guide rail being coaxially arranged with support seat and top pressure part being arranged on around guide rail, in top pressure outer sealing ring state, around guide rail drives top pressure part to move around outer cylinder rear cover.

[0005] Further, the support seat includes base and inner bracing platform that are integrally formed in steps, among the outer cylinder rear cover seated on support seat, the base axially supports outer cylinder rear cover, and the inner bracing platform radially braces outer cylinder rear cover.

[0006] Further, a plurality of positioning mechanisms are distributed in circumferential array on inner bracing platform;

[0007] The positioning mechanism includes transverse telescopic drive part and bracing plate on transverse telescopic drive part, and the bracing plate is pushed against the inner circle wall of outer cylinder rear cover by the elongation of transverse telescopic drive part.

[0008] Further, the outer periphery of the base is provided with peripheral plate, and the around guide rail is mounted on the peripheral plate.

[0009] Further, the top pressing part comprises a vertical telescopic driving part mounted on the surrounding guide rail and a rolling top pressing part connected to the vertical telescopic driving part; the vertical telescopic driving part can extend to push the rolling top pressing part to rise to the top pressing outer sealing ring, and the rolling top pressing part is driven by the surrounding guide rail to move in a circumferential walking state of the top pressing outer sealing ring.

[0010] Further, the top pressing part further comprises an elastic telescopic rod, which is connected between the vertical telescopic driving part and the rolling top pressing part in a vertical posture, and the elastic telescopic rod has a rod body structure with a changeable elastic force.

[0011] Beneficial effects: in the state of top pressing the outer sealing ring, the surrounding guide rail can drive the top pressing part to move around the outer cylinder rear cover, so as to top press the outer sealing ring by walking around, ensure that the outer sealing ring is tightly attached to the outer cylinder rear cover, thereby avoiding the cracking and falling phenomenon of the outer sealing ring, and improving the assembly quality and reliability. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 Structure diagram of the outer cylinder rear cover of the washing machine assembled with the sealing ring;

[0013] Figure 2 Structure diagram of the pressure maintaining device of the outer cylinder rear cover of the washing machine;

[0014] Figure 3 Structure diagram of the pressure maintaining device of the utility model applied to the pressure maintaining operation of the sealing ring of the outer cylinder rear cover. DETAILED DESCRIPTION

[0015] The utility model will be further described below in combination with the drawings.

[0016] As shown in Figure 1 , Figure 2 and Figure 3 , a pressure maintaining device of a washing machine outer cylinder rear cover, the pressure maintaining device is used for the assembly pressure maintaining attachment of the outer cylinder rear cover 1 and outer sealing ring 2 of the washing machine, the pressure maintaining device comprises a support seat 3, a positioning mechanism 4 located on the seat surface of the support seat 3 and a surrounding top pressing mechanism 5 located on the seat side of the support seat 3, the outer cylinder rear cover 1 is coaxially arranged on the support seat 3 and is positioned by the radial inner support of the positioning mechanism 4, the surrounding top pressing mechanism 5 comprises a surrounding guide rail 6 coaxially arranged with the support seat 3 and a top pressing part 7 arranged on the surrounding guide rail 6, in the state of top pressing the outer sealing ring 2, the surrounding guide rail 6 drives the top pressing part 7 to move around the outer cylinder rear cover 1, so as to top press the outer sealing ring 2 by walking around, ensure that the outer sealing ring 2 is tightly attached to the outer cylinder rear cover 1, thereby avoiding the cracking and falling phenomenon of the outer sealing ring 2, and improving the assembly quality and reliability.

[0017] As shown in Figure 2And Figure 3 As shown in the drawings, the support seat 3 comprises a base 31 and an inner support platform 32 which are integrally formed in steps, the diameter of the base 31 is larger than the inner ring diameter of the outer cylinder rear cover 1, and the diameter of the inner support platform 32 is matched with the inner ring diameter of the outer cylinder rear cover 1, so that in the outer cylinder rear cover 1 seated on the support seat 3, the base 31 axially supports the outer cylinder rear cover 1, and the inner support platform 32 radially supports the outer cylinder rear cover 1. In order to make the outer cylinder rear cover 1 more easily seated on the support seat 3, the edge of the platform of the inner support platform 32 is chamfered.

[0018] In order to stabilize the positioning and fixing of the outer cylinder rear cover 1 relative to the support seat 3, a plurality of positioning mechanisms 4 are distributed in a circumferential array on the inner support platform 32; more specifically, the positioning mechanism 4 comprises a transverse telescopic driving part 41 and a support plate 42 on the transverse telescopic driving part 41, the transverse telescopic driving part 41 is elongated to push the support plate 42 against the inner ring wall of the outer cylinder rear cover 1. The transverse telescopic driving part 41 is a transverse air cylinder, which is installed on the platform of the inner support platform 32 through a first air cylinder mounting seat 40. In order to make the support plate 42 better fit when it is against the inner ring wall of the outer cylinder rear cover 1, the shape of the support plate 42 is a circular arc shape which is matched with the shape profile of the inner ring wall of the outer cylinder rear cover 1.

[0019] As shown in the drawings, Figure 2 Or Figure 3 As shown in the drawings, the outer periphery of the base 31 is provided with a peripheral plate 33, and the surrounding guide rail 6 is installed on the peripheral plate 33. The surrounding guide rail 6 of the utility model can adopt a ring-shaped electric guide rail.

[0020] As shown in the drawings, Figure 2 And Figure 3 As shown in the drawings, the top pressing part 7 comprises a vertical telescopic driving part 51 installed on the surrounding guide rail 6 and a rolling top pressing part 52 connected to the vertical telescopic driving part 51; the vertical telescopic driving part 51 is elongated to push the rolling top pressing part 52 to rise to press the outer sealing ring 2, and the rolling top pressing part 52 is driven by the surrounding guide rail 6 to be in a circumferential walking motion state of pressing the outer sealing ring 2. When pressing the outer sealing ring 2, the contact is rolling, which can avoid friction damage to the outer sealing ring 2. The vertical telescopic driving part 51 is a vertical air cylinder, which is connected to the slider on the ring-shaped electric guide rail through a second air cylinder mounting seat 50.

[0021] It is worth noting that, in the utility model, the top pressing part 7 further includes elastic telescopic rod 53, the elastic telescopic rod 53 is connected between vertical telescopic drive part 51 and rolling top pressing part 52 in vertical posture, and the rolling top pressing part 52 can adopt a roller, the roller is installed on the elastic telescopic rod 53 through the roller seat 54, and the elastic telescopic rod 53 is the rod body structure that the elasticity change is measurable, for example, the spring inside the elastic telescopic rod 53 adopts pressure sensor spring, in the process of surrounding walking top pressing to the outer sealing ring 2, the pressure value can be monitored through the pressure sensor spring, within the error allowable range, when the pressure value appears larger fluctuation, it shows that the outer sealing ring 2 appears local cracking in the fitting part, or it does not fit closely when assembling, if the monitoring pressure value still appears larger fluctuation after passing several rounds of surrounding walking top pressing, then the corresponding position of the monitoring pressure value fluctuation needs to be checked, the reason is further determined by manual, whether the new outer sealing ring 2 needs to be replaced or the outer sealing ring 2 needs to be re-watered and bonded.

[0022] The above only is the preferred implementation of the utility model, it should be pointed out: for the ordinary skill in the art of the present technology, on the premise of not departing from the principle of the utility model, still can make several improvements and refinements, these improvements and refinements also should be considered the protection range of the utility model.

Claims

1. A pressure maintaining device for the rear cover of the outer drum of a washing machine, which is used for the assembly pressure maintaining and close contact of the rear cover (1) of the outer drum of a washing machine and the outer sealing ring (2), characterized in that: The pressure maintaining device comprises a supporting seat (3), a positioning mechanism (4) on the seat surface of the supporting seat (3), and a surrounding top pressing mechanism (5) on the seat side of the supporting seat (3); the outer cylinder rear cover (1) is coaxially arranged on the supporting seat (3) and is positioned by the positioning mechanism (4) in the radial direction; the surrounding top pressing mechanism (5) comprises a surrounding guide rail (6) coaxially arranged with the supporting seat (3) and a top pressing part (7) arranged on the surrounding guide rail (6); in the state of pressing the outer sealing ring (2), the surrounding guide rail (6) drives the top pressing part (7) to move around the outer cylinder rear cover (1).

2. The pressure maintaining device for the rear cover of the outer tub of a washing machine according to claim 1, wherein: The supporting seat (3) comprises a base (31) and an inner supporting table (32) formed in one step; the base (31) axially supports the outer cylinder rear cover (1), and the inner supporting table (32) radially supports the outer cylinder rear cover (1).

3. The pressure maintaining device of the rear cover of the outer tub of the washing machine according to claim 2, characterized in that: A plurality of the positioning mechanisms (4) are distributed in a circular array on the inner supporting table (32). The positioning mechanism (4) comprises a transverse telescopic driving part (41) and a supporting plate (42) on the transverse telescopic driving part (41); the transverse telescopic driving part (41) is elongated to push the supporting plate (42) against the inner ring wall of the outer cylinder rear cover (1).

4. The pressure maintaining device for the rear cover of the outer tub of a washing machine according to claim 3, wherein: The base (31) is provided with an outer peripheral plate (33), and the surrounding guide rail (6) is mounted on the outer peripheral plate (33).

5. The pressure maintaining device for the rear cover of the outer tub of a washing machine according to claim 4, wherein: The top pressing part (7) comprises a vertical telescopic driving part (51) mounted on the surrounding guide rail (6) and a rolling top pressing part (52) connected to the vertical telescopic driving part (51); the vertical telescopic driving part (51) is elongated to push the rolling top pressing part (52) to rise to press the outer sealing ring (2), and the rolling top pressing part (52) is driven by the surrounding guide rail (6) to move in a circular walking state to press the outer sealing ring (2).

6. The pressure maintaining device of the rear cover of the outer tub of the washing machine according to claim 5, wherein: The top pressing part (7) further comprises an elastic telescopic rod (53) connected between the vertical telescopic driving part (51) and the rolling top pressing part (52) in a vertical posture, and the elastic telescopic rod (53) has a rod body structure with a measurable elastic force.

Images