CN216293966U

CN216293966U - A go up spray arm connection structure and cleaning machine for cleaning machine

Info

Publication number: CN216293966U
Application number: CN202121484196.8U
Authority: CN
Inventors: 施郑赞; 郑峰; 张昌海; 姜勇; 韩健健; 赵书瀚
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-04-15
Anticipated expiration: 2031-06-30

Abstract

The utility model relates to an upper spray arm connecting structure for a cleaning machine and the cleaning machine, wherein the connecting structure comprises an upper spray arm and a water supply pipe, a water inlet of the upper spray arm is connected with a water outlet of the water supply pipe through a rotating assembly, the rotating assembly comprises a rotating sleeve and a positioning sleeve, a first assembling sleeve is arranged on the top wall of the upper spray arm, the positioning sleeve is in inserting fit with the first assembling sleeve and in interference fit with the first assembling sleeve, the rotating sleeve is arranged on the periphery of the positioning sleeve, a check ring capable of abutting against the rotating sleeve to axially limit the rotating sleeve is arranged at the top of the positioning sleeve, and a second assembling sleeve which extends downwards and is detachably inserted on the rotating sleeve is arranged at the water outlet of the water supply pipe. The upper spray arm is convenient to assemble, and the rotating support surface of the upper spray arm is a contact surface between the rotating sleeve and the positioning sleeve, so that the contact surface is larger, the rotating stability of the upper spray arm is improved, and the cleaning effect is improved; simultaneously, the position sleeve and the first assembly sleeve are in interference fit, and the rotating stability is good.

Description

A go up spray arm connection structure and cleaning machine for cleaning machine

Technical Field

The utility model relates to the technical field of dish washing machines, in particular to an upper spray arm connecting structure for a cleaning machine and the cleaning machine.

Background

At present, for a dish washing machine with a large volume, at least an upper layer of spraying system and a lower layer of spraying system are generally arranged, and an upper layer of spraying arm can be generally rotatably connected to a water supply pipeline at the middle part and sprays upwards to wash dishes in an upper dish basket.

The Chinese utility model patent with the publication number of CN208193082U, a dish washer (application number: CN201820011032.5), discloses a structure, which discloses a structure for connecting an upper spray arm with a water supply pipeline, comprising a spray arm component and a water inlet pipe, wherein the spray arm component comprises a spray arm and an adapter, the first end of the adapter is connected with the spray arm, the second end of the adapter is connected with the water inlet pipe, a water passage is arranged in the adapter, and the water inlet pipe is communicated with the spray arm through the water passage. In addition, the second of adaptor is served and is equipped with the arch, is equipped with the mounting groove on the inlet tube, protruding and mounting groove joint cooperation, and the mounting groove carries out circumference and axial spacing to the arch for the firm in connection of adaptor and inlet tube, and connected mode is simple.

The connection structure between spray arm and the inlet tube is simpler in the aforesaid, but, goes up the spray arm when rotatory, and rotatory holding surface is provided by the buckle, and the holding surface is very little, and this just leads to influencing the stability in rotation of spray arm easily, and then influences the cleaning performance.

SUMMERY OF THE UTILITY MODEL

The first technical problem to be solved by the utility model is to provide an upper spray arm connecting structure for a cleaning machine, which improves the rotation stability and improves the cleaning effect by increasing the rotation supporting surface aiming at the current situation of the prior art.

The second technical problem to be solved by the present invention is to provide an upper spray arm connecting structure for a cleaning machine, which is convenient to assemble, in view of the current state of the prior art.

The third technical problem to be solved by the present invention is to provide a cleaning machine using the above-mentioned upper spray arm connection structure, in view of the current situation of the prior art.

The technical scheme adopted by the utility model for solving at least one technical problem is as follows: the utility model provides an go up spray arm connection structure for cleaning machine, includes spray arm and delivery pipe, it has the water inlet to open on the roof of spray arm to go up, the delivery pipe has the delivery port of arranging down, the water inlet of going up the spray arm is connected its characterized in that through the delivery port of rotating assembly with the delivery pipe: the rotating assembly comprises a rotating sleeve and a positioning sleeve, a first assembling sleeve extending upwards around the water inlet is arranged on the top wall of the upper spraying arm, the positioning sleeve is connected with the first assembling sleeve in an inserting mode and in interference fit with the first assembling sleeve, the rotating sleeve is arranged on the periphery of the positioning sleeve, a check ring capable of abutting against the rotating sleeve to axially limit the positioning sleeve is arranged at the top of the positioning sleeve, and a second assembling sleeve extending downwards and detachably inserted on the rotating sleeve is arranged at the water outlet of the water supply pipe.

In the above scheme, be provided with protruding circle on the supporting inner wall of first equipment, it has the draw-in groove that can with protruding circle interference fit to open on the periphery wall of position sleeve lower part, and under the assembly completion state, the magnitude of interference between protruding circle and the draw-in groove inner wall is not less than 0.4 mm. By adopting the matching structure, the production and the manufacture are convenient, and the assembly is also convenient.

Preferably, the upper surface of the convex ring is abutted against the inner top wall of the clamping groove, the interference magnitude of the upper surface of the convex ring and the inner top wall of the clamping groove is not less than 0.2mm, the lower surface of the convex ring is abutted against the inner bottom wall of the clamping groove, and the interference magnitude of the lower surface of the convex ring and the inner bottom wall of the clamping groove is not less than 0.2 mm.

Preferably, the first assembling sleeve is inserted with the positioning sleeve under a heated state. Due to the interference magnitude, if the positioning sleeve is directly inserted into the first assembling sleeve, the realization is difficult, and the convex ring, even the first assembling sleeve and the positioning sleeve can be damaged; when the upper spray arm and the lower spray arm are assembled, the upper spray arm is boiled in hot water of about 80 ℃ for about 30 seconds, when the upper spray arm is heated, the first assembling sleeve expands and becomes large, the positioning sleeve is inserted into the first assembling sleeve, and when the temperature is recovered, the first assembling sleeve and the positioning sleeve have a firm connection relation.

Preferably, the inner top wall of the clamping groove is convexly provided with at least two salient points which are arranged at intervals, and the salient points are abutted on the upper surface of the convex ring in an interference manner in the assembled state. Above-mentioned bump can be spacing to protruding circle in footpath to make protruding circle and draw-in groove combination back two can not relative rotation, strengthen connection structure's stability.

Preferably, the outer peripheral wall of the positioning sleeve is provided with a pressing ring which is arranged along the circumferential direction and is close to the upper portion of the clamping groove, and in the assembled state, the lower wall surface of the pressing ring is close to the top wall of the first assembling sleeve or is in contact with the top wall of the first assembling sleeve. This structure is favorable to carrying on spacingly to the power of going up spray arm on vertical to improve its stability in rotation.

Preferably, in order to avoid leakage, a water outlet of the water supply pipe is provided with a flow guide sleeve extending downwards into the positioning sleeve.

In the utility model, the rotating sleeve is provided with an inner sleeve and an outer sleeve which are sleeved at intervals and the bottoms of which are connected together, the inner sleeve is sleeved on the periphery of the positioning sleeve, the check ring is abutted against the top of the inner sleeve, and the second assembling sleeve is inserted into an upper port formed by the inner sleeve and the outer sleeve. Preferably, the outer peripheral wall of the second assembly set is provided with a top ring which can abut against the top wall of the outer sleeve so as to axially limit the outer sleeve. The rotating sleeve is limited in the inner area and the outer area through the retainer ring and the top ring, so that the rotating stability of the rotating sleeve is further improved.

In order to facilitate assembly, an internal thread is arranged on the inner peripheral wall of the outer sleeve, and an external thread which is in fit connection with the internal thread is arranged on the outer peripheral wall of the second assembly sleeve.

The utility model provides an use cleaning machine that has above-mentioned spray arm connection structure, includes the box, and this bottom half is provided with the return water chamber, the lower extreme of delivery pipe is connected with this return water chamber, box upper portion is provided with the bowl basket that can take out or put into the box, go up the spray arm and can locate in the box and be located the bottom of bowl basket with rotating for upwards wash the tableware that holds in the bowl basket.

Compared with the prior art, the utility model has the advantages that: the upper spray arm is rotatably connected with the water supply pipe through the rotary sleeve and the positioning sleeve, so that the assembly is convenient, and the rotating support surface of the upper spray arm is a contact surface between the rotary sleeve and the positioning sleeve, and compared with the clamping contact in the prior art, the contact surface is larger, so that the rotating stability of the upper spray arm is improved, and the cleaning effect is favorably improved; simultaneously, the locating sleeve and the first assembly sleeve are in interference fit, so that the connection reliability of the locating sleeve and the first assembly sleeve is not easily influenced due to sediment accumulation, and the upper spray arm is ensured to have better rotation stability all the time.

Drawings

FIG. 1 is a schematic structural view of an upper spray arm connection structure according to an embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of FIG. 1;

FIG. 3 is a partially exploded view of FIG. 1;

fig. 4 is a schematic structural diagram of a positioning sleeve in the embodiment of the utility model.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 4, the upper spray arm connecting structure for the cleaning machine of the present embodiment includes an upper spray arm 1 and a water supply pipe 2, a water inlet 11 is opened on a top wall of the upper spray arm 1, the water supply pipe 2 has a water outlet 21 disposed downward, and the water inlet 11 of the upper spray arm 1 is connected to the water outlet 21 of the water supply pipe 2 through a rotating assembly 3.

The rotating assembly 3 comprises a rotating sleeve 31 and a positioning sleeve 32, a first assembly sleeve 12 extending upwards around the water inlet 11 is arranged on the top wall of the upper spray arm 1, and the positioning sleeve 32 is connected with the first assembly sleeve 12 in an inserting and assembling mode and in interference fit with the first assembly sleeve 12. The rotating sleeve 31 is sleeved on the periphery of the positioning sleeve 32, the top of the positioning sleeve 32 is provided with a retaining ring 323 which can abut against the rotating sleeve 31 so as to axially limit the rotating sleeve, and the water outlet 21 of the water supply pipe 2 is provided with a second assembling sleeve 22 which extends downwards and is detachably inserted on the rotating sleeve 31.

Specifically, a convex ring 121 is arranged on the inner wall of the first assembling sleeve 12, a clamping groove 321 which can be in interference fit with the convex ring 121 is formed in the outer peripheral wall of the lower portion of the positioning sleeve 32, and the interference magnitude between the convex ring 121 and the inner wall of the clamping groove 321 is not less than 0.4mm in the assembled state. The upper surface of the convex ring 121 is abutted against the inner top wall of the clamping groove 321, the interference magnitude of the upper surface and the inner top wall is not less than 0.2mm, the lower surface of the convex ring 121 is abutted against the inner bottom wall of the clamping groove 321, and the interference magnitude of the lower surface and the inner bottom wall is not less than 0.2 mm.

Due to the interference, if the positioning sleeve 32 is directly inserted into the first assembly sleeve 12, it is difficult to achieve, and the protruding ring 121, and even the first assembly sleeve 12 and the positioning sleeve 32 may be damaged, so that during assembly, hot-fitting is required, that is, the first assembly sleeve 12 and the positioning sleeve 32 are inserted together in a heated state. The upper spray arm 1 is firstly boiled in hot water of about 80 ℃ for about 30 seconds, when the upper spray arm 1 is heated, the first assembly sleeve 12 expands and becomes large, the positioning sleeve 32 is inserted into the first assembly sleeve 12, and when the temperature is recovered, the first assembly sleeve 12 and the positioning sleeve 32 have a firm connection relationship.

Four salient points 3211 which are arranged at intervals are convexly arranged on the inner top wall of the clamping groove 321, and in an assembled state, the salient points 3211 are in interference fit with the upper surface of the convex ring 121. The convex points 3211 can limit the convex ring 121 in the radial direction, so that the convex ring 121 and the slot 321 cannot rotate relative to each other after being combined, and the stability of the connection structure is enhanced.

The outer peripheral wall of the positioning sleeve 32 is provided with a pressing ring 322 which is arranged along the circumferential direction and is close to the upper part of the clamping groove 321, and in the assembled state, the lower wall surface of the pressing ring 322 is close to the top wall of the first assembling sleeve 12 or is in contact with the top wall of the first assembling sleeve 12. This structure is favorable to carrying on spacingly to the power of going up spray arm 1 on vertical to improve its rotational stability.

To avoid leakage, a flow guide sleeve 211 extending downward into the positioning sleeve 32 is provided at the water outlet 21 of the water supply pipe 2.

In this embodiment, the rotating sleeve 31 has an inner sleeve 311 and an outer sleeve 312 that are sleeved at an interval between the inner and outer ends and are connected at the bottom, the inner sleeve 311 is sleeved on the outer periphery of the positioning sleeve 32, the retaining ring 323 abuts against the top of the inner sleeve 311, and the second assembly sleeve 22 is inserted into the upper port formed by the inner sleeve 311 and the outer sleeve 312. The outer peripheral wall of the second assembly sleeve 22 is provided with a top ring 221 which can abut against the top wall of the outer sleeve 312 so as to axially limit the outer sleeve. The rotation sleeve 31 is limited in the inner and outer regions by the retainer ring 323 and the top ring 221, which is beneficial to further improving the rotation stability.

The inner circumferential wall of the outer sleeve 312 is provided with an internal thread 3121, and the outer circumferential wall of the second fitting sleeve 22 is provided with an external thread 222 which is in fit connection with the internal thread 3121.

This embodiment is applied to cleaning machine that has above-mentioned spray arm connection structure and includes the box, and this bottom half is provided with the return water chamber, and the lower extreme of delivery pipe 2 is connected with this return water chamber, and box upper portion is provided with the bowl basket that can take out or put into the box, goes up spray arm 1 and can locate in the box and be located the bottom of bowl basket with rotating for upwards wash the tableware that holds in the bowl basket.

In the embodiment, the upper spray arm 1 is rotatably connected with the water supply pipe 2 through the rotary sleeve 31 and the positioning sleeve 32, and the rotating support surface of the upper spray arm 1 is a contact surface between the rotary sleeve 31 and the positioning sleeve 32, which is larger than the snap contact in the prior art, so that the rotating stability of the upper spray arm 1 is improved, and the cleaning effect is improved; meanwhile, the locating sleeve 32 is in interference fit with the first assembly sleeve 12, so that the connection reliability of the locating sleeve and the first assembly sleeve is not easily influenced due to sediment accumulation, and the upper spray arm is ensured to have better rotation stability all the time.

Directional terms such as "front," "rear," "upper," "lower," "left," "right," "side," "top," "bottom," and the like are used in the description and claims of the present invention to describe various example structural portions and elements of the utility model, but are used herein for convenience of description only and are to be determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the present invention may be oriented in different directions, the directional terms are used for descriptive purposes and are not to be construed as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity.

Claims

1. The utility model provides an go up spray arm connection structure for cleaning machine, includes spray arm (1) and delivery pipe (2), it has water inlet (11) to open on the roof of spray arm (1) to go up, delivery pipe (2) have delivery port (21) of arranging down, the water inlet (11) of going up spray arm (1) are connected with delivery port (21) of delivery pipe (2) through rotating assembly (3), its characterized in that: the rotating assembly (3) comprises a rotating sleeve (31) and a positioning sleeve (32), a first assembly sleeve (12) extending upwards around a water inlet (11) is arranged on the top wall of the upper spray arm (1), the positioning sleeve (32) is connected with the first assembly sleeve (12) in an inserting and matching mode in an interference fit mode, the rotating sleeve (31) is sleeved on the periphery of the positioning sleeve (32), the top of the positioning sleeve (32) is provided with a check ring (323) capable of abutting against the rotating sleeve (31) to axially limit the rotating sleeve, and a second assembly sleeve (22) extending downwards and detachably inserted on the rotating sleeve (31) is arranged at a water outlet (21) of the water supply pipe (2).

2. The upper spray arm connecting structure for a washing machine according to claim 1, wherein: be provided with protruding circle (121) on the inner wall of first supporting (12), it has draw-in groove (321) that can with protruding circle (121) interference fit to open on the periphery wall of position sleeve (32) lower part, and under the assembly completion state, the interference magnitude between protruding circle (121) and draw-in groove (321) inner wall is not less than 0.4 mm.

3. The upper spray arm connecting structure for a washing machine according to claim 2, wherein: the upper surface of protruding circle (121) and the interior roof of draw-in groove (321) offset and the interference magnitude of the two is not less than 0.2mm, the lower surface of protruding circle (121) and the interior bottom wall of draw-in groove (321) offset and the interference magnitude of the two is not less than 0.2 mm.

4. The upper spray arm connecting structure for a washing machine according to claim 2, wherein: the first assembly sleeve (12) is inserted with the positioning sleeve (32) in a heated state.

5. The upper spray arm connecting structure for a washing machine according to claim 4, wherein: at least two salient points (3211) which are arranged at intervals are convexly arranged on the inner top wall of the clamping groove (321), and in the assembled state, the salient points (3211) are abutted to the upper surface of the convex ring (121) in an interference manner.

6. The upper spray arm connecting structure for a washing machine according to claim 2, wherein: the clamping ring (322) which is arranged along the circumferential direction and is close to the upper part of the clamping groove (321) is arranged on the circumferential wall of the positioning sleeve (32), and in the state of complete assembly, the lower wall surface of the clamping ring (322) is close to the top wall of the first assembly sleeve (12) to be arranged or is in contact with the top wall of the first assembly sleeve (12).

7. The upper spray arm connecting structure for a washing machine according to any one of claims 1 to 6, wherein: a flow guide sleeve (211) extending downwards into the positioning sleeve is arranged at the water outlet (21) of the water supply pipe (2).

8. The upper spray arm connecting structure for a washing machine according to any one of claims 1 to 6, wherein: the rotating sleeve (31) is provided with an inner sleeve (311) and an outer sleeve (312) which are sleeved at intervals and the bottoms of which are connected together, the inner sleeve (311) is sleeved on the periphery of the positioning sleeve (32), the check ring (323) is abutted against the top of the inner sleeve (311), and the second assembling sleeve (22) is inserted into an upper port formed by the inner sleeve (311) and the outer sleeve (312); the inner peripheral wall of the outer sleeve (312) is provided with an internal thread (3121), and the outer peripheral wall of the second assembly sleeve (22) is provided with an external thread (222) which is matched and connected with the internal thread (3121).

9. The upper spray arm connecting structure for a washing machine according to claim 8, wherein: and a top ring (221) which can be abutted against the top wall of the outer sleeve (312) so as to axially limit the top wall is arranged on the outer peripheral wall of the second assembling sleeve (22).

10. A cleaning machine using the upper spray arm connecting structure of any one of claims 1 to 9, comprising a box body, a water return cavity is arranged at the bottom of the box body, the lower end of the water supply pipe (2) is connected with the water return cavity, a bowl basket which can be taken out or put into the box body is arranged at the upper part of the box body, and the cleaning machine is characterized in that: the upper spray arm (1) can be rotatably arranged in the box body and positioned at the bottom of the bowl basket and is used for upwards cleaning tableware contained in the bowl basket.