Washing machine nozzle body structure free of screws and welding

Abstract

The utility model discloses a washing machine spray head body structure free of screws and welding, which comprises a water box, a spray head body and a spray head body, the spraying part is arranged in the water box, a labyrinth sealing structure is arranged between the head of the spraying part and the water box, and the spraying part is further clamped and fixed to the water box through a buckle structure. The labyrinth sealing structure is designed between the spraying piece and the water box, an effective sealing effect can be achieved through the staggered labyrinth sealing structure, meanwhile, the multiple drainage holes are formed in the root of the sealing structure, pressure relief at the position can be facilitated, water is prevented from climbing along the wall, and the performance of the sealing structure is further ensured; a plurality of buckle structures are designed between the spraying piece and the water box, after the spraying piece and the water box are assembled, locking operation of the spraying piece and the water box can be achieved through cooperation of the buckle structures and the fourth protruding ribs, and compared with a traditional sealing mode, the sealing performance is guaranteed, and meanwhile the overall manufacturing process and cost can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of washing machines, and particularly relates to a washing machine spray head body structure without screws and welding. Background Art

[0002] Generally, washing machines on the current market are equipped with a water box assembly for adding washing powder or liquid detergent and fabric softener. Before the washing machine is filled with water, solid detergents such as washing powder or liquid detergents such as washing liquid can be added to the detergent box in the water box assembly. When water is filled, the water flow passes through the water box assembly and sprays out through the spraying part to wash the inner cavity of the detergent box, quickly dissolving the detergent, and making the detergent flow into the inner drum of the washing machine along the gap between the water box and the lower part of the detergent box with the water flow.

[0003] For the vast majority of washing machine brands on the existing market, welding or screw connection methods are mainly used to ensure the seal between the water box and the spraying part (spray head structure). The former structure has a higher cost, requires dedicated welding equipment and tooling, and also requires an additional welding process; the latter requires an air gun to be set up on the production line for screw installation. The use of screws itself brings additional costs, and there is a risk of rusting during long-term use. There is room for improvement in both cases.

[0004] In view of this, a washing machine spray head body structure without screws and welding is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a washing machine spray head body structure without screws and welding in order to solve the above-mentioned problems.

[0006] The technical solution adopted by the utility model is as follows: A washing machine spray head body structure without screws and welding, comprising: a water box, which is in the shape of a box with an opening on the side; a spraying part, which is arranged in the water box, and a labyrinth seal structure is arranged between the head of the spraying part and the water box. The spraying part is also fixedly clamped with the water box through a snap structure, wherein: the labyrinth seal structure includes a first rib and a second rib arranged on the inner end face of the head of the spraying part and a step part arranged at the top end of the water box. A third rib extends outward horizontally along the connection between the step part and the inside of the water box. The first rib, the second rib and the spraying part enclose a first seal groove adapted for the third rib to be inserted into. The step part and the third rib enclose a second seal groove adapted for the first rib to be in interference fit. The first seal groove and the second seal groove are arranged in a staggered manner from bottom to top to form a labyrinth seal.

[0007] In a preferred embodiment, the bottom end face of the first rib has an inclined surface that slopes upward.

[0008] In a preferred embodiment, a continuous fourth rib is provided between the inner wall and the side wall of the water box. A limiting cavity adapted to the spraying member is formed by enclosing between the water box and the fourth rib. A guiding surface that can slide along the fourth rib in a guiding manner protrudes from the tail end of the spraying member.

[0009] In a preferred embodiment, there is a horizontal buffer distance between the head of the spraying member and the head of the stepped portion.

[0010] In a preferred embodiment, the snap structure includes a plurality of snap fasteners and slots that are adapted to engage with each other. The plurality of snap fasteners are equidistantly spaced and distributed at the head of the first rib. The plurality of slots are spaced and distributed on the stepped portion and are correspondingly arranged with the snap fasteners.

[0011] In a preferred embodiment, a water passing cavity is formed by sinking the top of the spraying member. A plurality of spraying holes communicating with the water passing cavity are formed in the bottom wall of the spraying member.

[0012] In a preferred embodiment, a plurality of water discharging holes are spaced and distributed at the bottom end of the head of the spraying member. The water discharging holes communicate with the water passing cavity.

[0013] In a preferred embodiment, a through water inlet hole is provided on the side wall of the water box. A water inlet is provided on the side wall of the spraying member and is communicated with the water inlet hole.

[0014] In a preferred embodiment, a guiding rib position is protruded from the inner wall at the top end of the water box. A guiding groove that can slide along the guiding rib position in a guiding manner is formed in the guiding surface.

[0015] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0016] 1. In the present utility model, a labyrinth seal structure is designed between the spraying member and the water box. The staggered labyrinth seal structure can achieve an effective sealing effect. Water sealing can be realized only by the structures of the spraying member and the water box itself. Compared with the traditional sealing method, while ensuring the sealing performance, the overall manufacturing process and cost can be reduced, which is worthy of popularization;

[0017] 2. In the present utility model, water discharging holes are opened at the root of the seal structure, which is more conducive to pressure relief here, preventing water from climbing along the wall. At the same time, the inclined surface structure of the labyrinth seal structure is more conducive to achieving sealing during assembly, thereby further ensuring the sealing effect of the seal structure;

[0018] 3. In the present utility model, there is a buffer distance between the labyrinth structure and the water box. Part of the extremely small leaked water flow will fall due to the action of gravity within this distance. Since it is still within the range of the water box, it is equivalent to a secondary insurance for the seal structure;

[0019] 4. In the present utility model, a plurality of buckle structures are designed between the spraying member and the water box. After the spraying member and the water box are assembled, the locking operation of the spraying member and the water box can be realized by the cooperation of the buckle structure and the fourth rib. Brief Description of the Drawings

[0020] Figure 1 is a three-dimensional structure schematic diagram of the whole present utility model;

[0021] Figure 2 is a schematic cross-sectional plane structure diagram of the whole present utility model;

[0022] Figure 3 is a schematic three-dimensional structure diagram of the spraying member in the present utility model;

[0023] Figure 4 is a schematic three-dimensional structure diagram of the water box as seen from the opening in the present utility model.

[0024] Reference numerals in the figures: 1 - water box, 101 - water inlet hole, 102 - card slot, 103 - step portion, 104 - fourth rib, 105 - guide rib position, 106 - third rib, 2 - spraying member, 201 - water discharge hole, 202 - first rib, 203 - guide surface, 204 - buckle, 205 - second rib, 206 - spraying hole, 207 - guide groove. Detailed Embodiment

[0025] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0026] Refer to Figures 1-4, a washing machine spray head body structure without screws and welding, comprising: a water box 1, which is in the shape of a box with an opening on the side (to meet the subsequent placement of a pull-out detergent box); a spray member 2, which is arranged in the water box 1, and a labyrinth seal structure is provided between the head of the spray member 2 and the water box 1. The labyrinth seal structure includes a first rib 202 and a second rib 205 provided on the inner end face of the head of the spray member 2 and a stepped portion 103 provided on the top end of the water box 1. A third rib 106 is formed by the connection between the stepped portion 103 and the inside of the water box 1 extending laterally outward. The first rib 202, the second rib 205 and the spray member 2 enclose a first seal groove adapted for the third rib 106 to be inserted into. The stepped portion 103 and the third rib 106 enclose a second seal groove adapted for the first rib 202 to be in interference fit. The first seal groove and the second seal groove are arranged in a staggered manner from bottom to top to form a labyrinth seal. A labyrinth seal structure is designed between the spray member 2 and the water box 1. The staggered labyrinth seal structure can achieve an effective sealing effect. Water sealing can be achieved only by the structures of the spray member 2 and the water box 1 itself. Compared with the traditional sealing method, while ensuring the sealing performance, the overall manufacturing process and cost can be reduced, which is worthy of promotion.

[0027] Further, the bottom end face of the first rib 202 has an inclined surface that slopes upward. The inclined surface structure designed on the first rib 202 can facilitate assembly and ensure the sealing effect after assembly.

[0028] Further, a continuous fourth rib 104 is provided between the inner wall and the side wall of the water box 1. A limiting cavity adapted for the spray member 2 is formed by the enclosure between the water box 1 and the fourth rib 104. A guiding surface 203 that can slide along the fourth rib 104 is protruded from the tail end of the spray member 2. Through the cooperation of the guiding surface 203 and the fourth rib 104, while facilitating the spray member 2, the assembly accuracy of the spray member 2 can be improved. Secondly, the up and down positions of the spray member 2 can be limited after assembly.

[0029] Further, there is a horizontal buffer distance between the head of the spray member 2 and the head of the stepped portion 103. There is a buffer distance between the spray member 2 and the stepped portion 103. Part of the extremely small leakage water flow will fall due to the action of gravity within this distance. Since it is still within the range of the water box 1, it is equivalent to a secondary insurance for the sealing structure and there will be no water leakage phenomenon.

[0030] Further, the spray member 2 is also fixedly clamped to the water box 1 through a snap structure. The snap structure includes a plurality of snaps 204 and slots 102 that are adapted to be clamped. The plurality of snaps 204 are equally spaced and distributed at the head of the first rib 202. The plurality of slots 102 are spaced and distributed on the stepped portion 103 and are correspondingly arranged with the snaps 204. A plurality of snap structures are designed between the spray member 2 and the water box 1. After the spray member 2 and the water box 1 are assembled, the locking operation of the spray member 2 and the water box 1 can be realized by the cooperation of the snap structure and the fourth rib 104.

[0031] Among them, both the spraying member 2 and the water box 1 are integrally formed plastic parts.

[0032] Furthermore, a through water inlet hole 101 is provided on the side wall of the water box 1, the side wall of the spraying member 2 has a water inlet connected to the water inlet hole 101, a water passing cavity is formed by the sinking of the top of the spraying member 2, and a plurality of spraying holes 206 communicating with the water passing cavity are formed on the bottom wall of the spraying member 2. The water inlet hole 101 is connected to the water inlet system (position in the figure) of the washing machine. When water enters, the water flow discharged by the water inlet system passes through the water inlet hole 101 and is sprayed out through the spraying holes 206 to wash the inner cavity of the detergent box (not shown in the figure), quickly dissolving the detergent.

[0033] Furthermore, a plurality of water discharge holes 201 are distributed at intervals at the bottom end of the head of the spraying member 2. The water discharge holes 201 communicate with the water passing cavity. Opening the water discharge holes 201 at the root of the sealing structure is more conducive to pressure relief here, preventing water from climbing along the wall, thereby further ensuring the sealing effect of the sealing structure.

[0034] Furthermore, a guiding rib position 105 is formed by the convexity of the inner wall at the top end of the water box 1, and a guiding groove 207 capable of guiding and sliding along the guiding rib position 105 is formed on the guiding surface 203. The cooperation of the guiding rib position 105 and the guiding groove 207 plays an auxiliary guiding role for the installation of the spraying member 2.

[0035] In summary, a labyrinth sealing structure is designed between the spraying member 2 and the water box 1. The staggered labyrinth sealing structure can achieve an effective sealing effect. Water sealing can be realized only by the structures of the spraying member 2 and the water box 1 themselves. Compared with the traditional sealing method, it can reduce the overall manufacturing process and cost while ensuring the sealing performance, and is worthy of promotion.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A washing machine nozzle structure free of screws and welding, characterized in that: include: A water box, which is in the shape of a box with an opening on the side; A spraying member is arranged in the water box, a labyrinth sealing structure is arranged between the head of the spraying member and the water box, and the spraying member is also fixed to the water box by a snap-fit ​​structure, wherein: The labyrinth sealing structure includes a first convex rib and a second convex rib provided on the inner end surface of the spray head and a step portion provided on the top of the water box, wherein the step portion and the internal connection of the water box extend outwardly in the transverse direction to form a third convex rib, the first convex rib, the second convex rib and the spray part are surrounded to form a first sealing groove adapted for the insertion of the third convex rib, the step portion and the third convex rib are surrounded to form a second sealing groove adapted for the interference fit of the first convex rib, and the first sealing groove and the second sealing groove are alternately arranged from bottom to top to form a labyrinth seal.

2. A washing machine nozzle structure free of screws and welding as claimed in claim 1, characterized in that: The bottom end surface of the first convex rib has an upwardly inclined slope.

3. A washing machine nozzle structure free of screws and welding as claimed in claim 1, characterized in that: A continuous fourth convex rib is provided between the inner wall and the side wall of the water box, a limiting cavity adapted to the spraying member is enclosed between the water box and the fourth convex rib, and a guide surface that can slide along the fourth convex rib is protruded from the tail end of the spraying member.

4. A washing machine nozzle structure free of screws and welding as claimed in claim 1, characterized in that: A transverse buffer distance is provided between the head of the spraying member and the head of the step portion.

5. A washing machine nozzle structure free of screws and welding as claimed in claim 1, characterized in that: The buckle structure includes a plurality of buckles and slots adapted to engage with each other, the buckles are evenly spaced on the head of the first convex rib, and the slots are spaced on the step portion and corresponding to the buckles.

6. A washing machine nozzle structure free of screws and welding as claimed in claim 1, characterized in that: The top of the spraying member is sunken to form a water passage cavity, and the bottom wall of the spraying member is provided with a plurality of spray holes connected with the water passage cavity.

7. A washing machine nozzle structure free of screws and welding as claimed in claim 6, characterized in that: A plurality of drainage holes are spaced apart at the bottom end of the head of the spraying member, and the drainage holes are connected with the water passage cavity.

8. A washing machine nozzle structure free of screws and welding as claimed in claim 1, characterized in that: The side wall of the water box is provided with a through water inlet hole, and the side wall of the spraying member is provided with a water inlet port connected with the water inlet hole.

9. A washing machine nozzle structure free of screws and welding as claimed in claim 3, characterized in that: The inner wall of the top end of the water box is protruded to form a guide rib, and the guide surface is provided with a guide groove that can guide and slide along the guide rib.

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