Installation structure and installation method of spray arm for cleaning machine door

Abstract

The present invention relates to a spray arm mounting structure and method for a door body of a cleaning machine, comprising a water inlet sleeve and a locking member. The top wall of the spray arm is provided with an assembly ring extending upward around the periphery of a water inlet, the lower part of the water inlet sleeve is inserted into the assembly ring and locked with the assembly ring, and the top edge of the water inlet sleeve is provided with an assembly edge extending radially outward to the outside of the assembly ring; the locking member is annular and sleeved on the periphery of the assembly ring, the inner edge of the top wall of the locking member is rotatably matched with the lower surface of the assembly edge, the locking member is provided with an installation groove arranged circumferentially around the periphery of the assembly edge, and the lower surface of the door body is provided with a plug-in sleeve that can be inserted into the installation groove, and the plug-in sleeve is threadedly connected to the side wall of the installation groove. During the disassembly and assembly process, the movement of the spray arm's own gravity is used to form a limit with the locking member, so that the spray arm is rotated to achieve disassembly and assembly, and the operation is simple and reliable; in the cleaning state, the spray arm eliminates the limit under its own gravity and rotates smoothly.

Description

Technical Field

[0001] The invention relates to the technical field of dishwashers, and in particular to a spray arm mounting structure and a mounting method for a door body of a dishwasher. Background Art

[0002] For a sink-type dishwasher, in order to improve the cleaning effect of the back of the tableware, a spray arm can be set on the lower surface of the door body located at the top of the sink to spray downward to rinse the back of the tableware.

[0003] The applicant's prior application 202221592429.0 "Door body assembly for cleaning machine and cleaning machine" discloses a structure, which includes a door body and a disc-shaped upper spray arm, which is arranged on the lower surface of the door body, and a water inlet connected to the upper spray arm is opened on the top of the door body, and a first spray hole and a second spray hole are opened on the lower surface of the upper spray arm. The first spray hole is arranged near the central area of ​​the upper spray arm and is used for spraying downward, and the second spray hole is arranged near the edge of the upper spray arm and is used for spraying to the circumferential area outside it.

[0004] In order to avoid the invasion of residues and improve the space utilization, the above solution sets a mounting space on the lower surface of the door body, and installs the disc-shaped upper spray arm in the space. After installation, the gap between the disc-shaped upper spray arm and the mounting space is very small, which makes it difficult to remove the upper spray arm when it is blocked or needs to be cleaned. Summary of the invention

[0005] The first technical problem to be solved by the present invention is to provide a spray arm installation structure for cleaning a machine door body, which is convenient for disassembling and assembling an embedded disc-shaped spray arm.

[0006] The second technical problem to be solved by the present invention is to provide a method for installing a spray arm on a cleaning machine door body that is easy to operate in view of the current status of the prior art.

[0007] The technical solution adopted by the present invention to solve at least one of the above technical problems is:

[0008] A spray arm mounting structure for a door body of a cleaning machine, comprising a door body and a spray arm, wherein the lower surface of the door body is recessed upward to form a mounting cavity, a water guide port is provided at the top of the mounting cavity, the spray arm is rotatably arranged in the mounting cavity and a water inlet connected to the water guide port is provided at the top, and a water spray hole is provided at the bottom wall, and further comprising:

[0009] A water inlet sleeve, the top wall of the spray arm is provided with an assembly ring extending upward around the periphery of the water inlet, the lower part of the water inlet sleeve is inserted into the assembly ring and locked with the assembly ring, and the top edge of the water inlet sleeve is provided with an assembly edge extending radially outward to the outside of the assembly ring;

[0010] The locking piece is annular and sleeved on the outer periphery of the assembly ring. The inner edge of the top wall of the locking piece is rotatably matched with the lower surface of the assembly edge. The locking piece is provided with a mounting groove arranged circumferentially around the outer periphery of the assembly edge. The lower surface of the door body is provided with a plug sleeve that can be inserted into the mounting groove, and the plug sleeve is threadedly connected to the side wall of the mounting groove.

[0011] A limiting structure is arranged between the spray arm and the locking member, which can form a limit when the two are in a relatively close state and cancel the limit when the two are in a relatively far state.

[0012] Preferably, the lower surface of the locking member is provided with a recessed slot, and correspondingly, the upper surface of the spray arm is provided with a block that can be inserted into the slot as it approaches the locking member, and the block and the slot together constitute the limiting structure. This structure is convenient for generating or eliminating the limit as the spray arm moves up and down, and is easy to operate.

[0013] Preferably, in the cleaning state, the lower surface of the assembly edge contacts and cooperates with the upper surface of the inner edge of the locking member, a first gap is formed between the top edge of the water inlet sleeve and the inner top wall of the door body, a second gap is formed between the upper surface of the spray arm and the lower surface of the locking member, and the height of the first gap is greater than the height of the second gap. With such a structure, on the one hand, the water inlet sleeve can rotate smoothly with the spray arm, and on the other hand, the limiting structure can be formed.

[0014] Preferably, the water inlet jacket includes a first section, a second section, and a third section which are connected in sequence from bottom to top and whose diameters gradually increase. The first section is inserted into the assembly ring and locked with the assembly ring. The lower end of the second section abuts against the assembly ring and its outer peripheral wall is roughly flush with the outer peripheral wall of the assembly ring. The portion of the third section located radially outside the second section constitutes the assembly edge. With the above structure, the first section is used for locking connection with the spray arm, the third section is used for rotational cooperation with the locking member, and the second section is connected and transitioned to reduce fluid energy loss.

[0015] Preferably, the inner edge of the locking member is provided with a first vertical side wall arranged along the circumferential direction, the first vertical side wall is sleeved on the outer circumference of the assembly ring and the second section, and a rotational mating surface is formed between the top of the first vertical side wall and the lower surface of the third section. The above structure makes the assembly structure compact and reliable, and in the cleaning state, the spray arm tends to press downward under the action of water pressure and its own gravity when spraying water, and the cooperation between the spray arm and the assembly ring is more reliable to avoid water leakage here.

[0016] To facilitate assembly, the outer edge of the locking piece is provided with a vertically arranged second vertical side wall, the second vertical side wall and the first vertical side wall enclose the installation groove, the outer surface of the second vertical side wall is provided with an external thread, and the outer surface of the plug-in sleeve is provided with an internal thread matching the external thread.

[0017] Preferably, the inner diameter of the third section is larger than the inner diameter of the first section, and the inner peripheral wall of the second section forms a diversion slope extending obliquely from the lower edge of the third section to the upper edge of the first section. The top wall of the door body is provided with a water guide sleeve extending downward along the water guide port to the third section in the water inlet sleeve, the inner diameter of the water guide sleeve is consistent with the inner diameter of the first section, the outer diameter of the water guide sleeve is smaller than the outer diameter of the third section, and the lower end is arranged corresponding to the diversion slope. The above structure is conducive to reducing fluid energy loss, maintaining a large water pressure and a good flushing effect.

[0018] In order to facilitate assembly, the outer wall of the first section is provided with a limiting cam. Correspondingly, a slot is opened on the circumference of the assembly ring which can be engaged with the limiting cam for limiting the position. The limiting cam and the slot can be achieved through operating tooling during the coordinated installation to ensure that the two are reliably connected after assembly and that relative rotation in the circumferential direction does not occur.

[0019] A method for installing a spray arm on a cleaning machine door body comprises the following steps:

[0020] During installation, place the spray arm on the operating platform with the water inlet facing upwards, first put the locking piece on the outer periphery of the assembly ring and use its gravity to naturally sink and rest on the spray arm, then insert the lower part of the water inlet sleeve into the assembly ring and rotate it circumferentially at a certain angle to lock the two; make the lower surface of the door body face upwards, and buckle the spray arm into the installation cavity. At this time, the spray arm is close to the locking piece due to gravity to form a limit, and the plug-in sleeve is inserted into the installation groove. Rotate the spray arm, and the plug-in sleeve is threadedly locked and connected with the side wall of the installation groove;

[0021] When the door is closed, the spray arm moves away from the locking member under the action of gravity and the limit is cancelled, and the spray arm can rotate relative to the locking member;

[0022] When disassembling, open the door body until the lower surface of the door body faces upward. At this time, the spray arm approaches the locking piece under the action of gravity so that the two form a limit. Rotate the spray arm to release the threaded locking connection between the plug sleeve and the side wall of the installation groove, and then remove the spray arm.

[0023] Compared with the prior art, the advantages of the present invention are: the present invention provides a structure and method for disassembling and assembling an embedded spray arm. During the disassembly and assembly process, the movement of the spray arm's own gravity and the locking member are used to form a limit, so that the spray arm is rotated to achieve disassembly and assembly, and the operation is simple and reliable; in the cleaning state, the spray arm eliminates the limit under its own gravity and rotates smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of a door cleaning machine according to an embodiment of the present invention;

[0025] Figure 2 for Figure 1 Partial exploded view of

[0026] Figure 3 for Figure 2 A schematic diagram of the structure in the middle from another angle;

[0027] Figure 4 is a cross-sectional view of a door body according to an embodiment of the present invention;

[0028] Figure 5 for Figure 4 Enlarged view of part B. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below with reference to the accompanying drawings.

[0030] like Figures 1 to 5 As shown, the spray arm mounting structure for the cleaning machine door of this embodiment includes a door body 1 and a disc-shaped spray arm 2. The lower surface of the door body 1 is recessed upward to form a mounting cavity 11. A water guide port 12 is provided at the top of the mounting cavity 11. The spray arm 2 is rotatably disposed in the mounting cavity 11 and has a water inlet 21 connected to the water guide port 12 at the top and a water spray hole 22 on the bottom wall.

[0031] The spray arm 2 of this embodiment is detachably mounted on the door body 1 through the water inlet sleeve 3 and the locking member 4. The top wall of the spray arm 2 is provided with an assembly ring 23 extending upward around the periphery of the water inlet 21, the lower part of the water inlet sleeve 3 is inserted into the assembly ring 23 and locked with the assembly ring 23, and the top edge of the water inlet sleeve 3 is provided with an assembly edge 34 extending radially outward to the outside of the assembly ring 23. The locking member 4 is annular and sleeved on the outer periphery of the assembly ring 23, the inner edge of the top wall of the locking member 4 is rotatably matched with the lower surface of the assembly edge 34, the locking member 4 is provided with an installation groove 41 arranged circumferentially around the periphery of the assembly edge 34, and the lower surface of the door body 1 is provided with a plug sleeve 13 that can be inserted into the installation groove 41, and the plug sleeve 13 is threadedly connected to the side wall of the installation groove 41.

[0032] A limiting structure A is arranged between the spray arm 2 and the locking member 4, which can form a limit when the two are in a relatively close state and cancel the limit when the two are in a relatively far state.

[0033] In this embodiment, the lower surface of the locking member 4 is concavely provided with a slot 42, and correspondingly, the upper surface of the spray arm 2 is provided with a block 24 that can be inserted into the slot 42 as it approaches the locking member 4, and the block 24 and the slot 42 together constitute the limiting structure A. This structure is convenient for generating or eliminating the limiting position as the spray arm 2 moves up and down, and is easy to operate.

[0034] In the cleaning state, the lower surface of the assembly edge 34 contacts and cooperates with the upper surface of the inner edge of the locking member 4, a first gap 100 is formed between the top edge of the water inlet jacket 3 and the inner top wall of the door body 1, a second gap 200 is formed between the upper surface of the spray arm 2 and the lower surface of the locking member 4, and the height of the first gap 100 is greater than the height of the second gap 200. With such a structure, on the one hand, the water inlet jacket 3 can rotate smoothly with the spray arm 2, and on the other hand, it is ensured that the limiting structure A can be formed.

[0035] The water inlet jacket 3 includes a first section 31, a second section 32, and a third section 33 which are connected in sequence from bottom to top and whose diameters gradually increase. The first section 31 is inserted in the assembly ring 23 and locked with the assembly ring 23. The lower end of the second section 32 abuts against the assembly ring 23 and its outer peripheral wall is roughly flush with the outer peripheral wall of the assembly ring 23. The portion of the third section 33 located radially outside the second section 32 constitutes an assembly edge 34. With the above structure, the first section 31 is used for locking connection with the spray arm 2, the third section 33 is used for rotational cooperation with the locking member 4, and the second section 32 is connected and transitioned to reduce fluid energy loss.

[0036] The inner edge of the locking member 4 is provided with a first vertical side wall 43 arranged along the circumferential direction, and the first vertical side wall 43 is sleeved on the outer circumference of the assembly ring 23 and the second section 32, and a rotational mating surface is formed between the top of the first vertical side wall 43 and the lower surface of the third section 33. The above structure makes the assembly structure compact and reliable, and in the cleaning state, the spray arm 2 tends to be pressed downward under the action of water pressure and its own gravity when spraying water, and the cooperation between the spray arm 2 and the assembly ring 23 is more reliable to avoid water leakage here.

[0037] To facilitate assembly, the outer edge of the locking member 4 is provided with a vertically arranged second vertical side wall 44, and the second vertical side wall 44 and the first vertical side wall 43 enclose an installation groove 41. The outer surface of the second vertical side wall 44 is provided with an external thread, and the outer surface of the plug-in sleeve 13 is provided with an internal thread matching the external thread.

[0038] The inner diameter of the third section 33 is larger than the inner diameter of the first section 31, and the inner peripheral wall of the second section 23 forms a diversion slope 35 extending obliquely from the lower edge of the third section 33 to the upper edge of the first section 31. The inner top wall of the door body 1 is provided with a water guide sleeve 121 extending downward from the water guide port 12 to the third section 33 in the water inlet sleeve 3, the inner diameter of the water guide sleeve 121 is consistent with the inner diameter of the first section 31, the outer diameter of the water guide sleeve 121 is smaller than the outer diameter of the third section 33, and the lower end is arranged corresponding to the diversion slope 35. The above structure is conducive to reducing fluid energy loss, maintaining a large water pressure and a good flushing effect.

[0039] To facilitate assembly, a limiting cam 311 is provided on the outer circumferential wall of the first section 31. Correspondingly, a slot 231 is provided on the circumference of the assembly ring 23 for engaging with the limiting cam 311. The limiting cam 311 and the slot 231 can be matched and installed by operating tooling to ensure that the two are reliably connected after assembly and that relative rotation in the circumferential direction does not occur.

[0040] The method for installing a spray arm on a cleaning machine door in this embodiment includes the following steps:

[0041] During installation, place the spray arm 2 on the operating platform with the water inlet 21 facing upwards, first sleeve the locking piece 4 on the outer periphery of the assembly ring 23 and use its gravity to naturally sink and rest on the spray arm 2, then insert the lower part of the water inlet sleeve 3 into the inner periphery of the assembly ring 23 and rotate it at a certain angle to lock the two; make the lower surface of the door body 1 face upwards, buckle the spray arm 2 into the installation cavity 11, at this time, the spray arm 2 is close to the locking piece 4 due to gravity, and the two form a limit, the plug-in sleeve 13 is inserted into the installation groove 41, rotate the spray arm 2, and the plug-in sleeve 13 is threadedly locked and connected with the side wall of the installation groove 41;

[0042] In the door-closed state, the spray arm 2 moves away from the locking member 4 under the action of gravity and the limit is cancelled, and the spray arm 2 can rotate relative to the locking member 4;

[0043] When disassembling, open the door body 1 until the lower surface of the door body 1 faces upward. At this time, the spray arm 2 is close to the locking piece 4 under the action of gravity so that the two form a limit. Rotate the spray arm 2, release the threaded locking connection between the plug sleeve 13 and the side wall of the installation groove 41, and then the spray arm 2 can be removed.

[0044] During the disassembly and assembly process, the present embodiment utilizes the movement of the spray arm 2's own gravity and the locking member 4 to form a limit, thereby rotating the spray arm 2 to achieve disassembly and assembly, which is simple and reliable to operate; in the cleaning state, the spray arm 2 eliminates the limit under its own gravity and rotates smoothly.

[0045] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A spray arm mounting structure for a door body of a cleaning machine, comprising a door body (1) and a spray arm (2), wherein the lower surface of the door body (1) is recessed upward to form a mounting cavity (11), a water guide port (12) is provided at the top of the mounting cavity (11), the spray arm (2) is rotatably arranged in the mounting cavity (11) and a water inlet (21) connected to the water guide port (12) is provided at the top, and a water spray hole (22) is provided at the bottom wall, wherein: Also includes A water inlet sleeve (3), the top wall of the spray arm (2) is provided with a mounting ring (23) extending upward around the periphery of the water inlet (21), the lower part of the water inlet sleeve (3) is inserted into the mounting ring (23) and locked with the mounting ring (23), and the top edge of the water inlet sleeve (3) is provided with a mounting edge (34) extending radially outward to the outside of the mounting ring (23); The locking member (4) is annular and is sleeved on the outer periphery of the assembly ring (23). The inner edge of the top wall of the locking member (4) is rotatably matched with the lower surface of the assembly edge (34). The locking member (4) is provided with a mounting groove (41) arranged circumferentially around the outer periphery of the assembly edge (34). The lower surface of the door body (1) is provided with a plug sleeve (13) that can be inserted into the mounting groove (41). The plug sleeve (13) is threadedly connected to the side wall of the mounting groove (41). A limiting structure (A) is provided between the spray arm (2) and the locking member (4), which can form a limit when the two are in a relatively close state and cancel the limit when the two are in a relatively far state; The lower surface of the locking member (4) is provided with a recessed slot (42), and correspondingly, the upper surface of the spray arm (2) is provided with a block (24) which can be inserted into the slot (42) as the spray arm approaches the locking member (4), and the block (24) and the slot (42) together constitute the limiting structure (A); In the cleaning state, the lower surface of the assembly edge (34) contacts and cooperates with the upper surface of the inner edge of the locking piece (4), a first gap (100) is formed between the top edge of the water inlet sleeve (3) and the inner top wall of the door body (1), and a second gap (200) is formed between the upper surface of the spray arm (2) and the lower surface of the locking piece (4), and the height of the first gap (100) is greater than the height of the second gap (200).

2. The spray arm installation structure for cleaning machine door according to claim 1, characterized in that: The water inlet jacket (3) comprises a first section (31), a second section (32), and a third section (33) which are connected in sequence from bottom to top and whose diameters gradually increase; the first section (31) is inserted into the assembly ring (23) and locked with the assembly ring (23); the lower end of the second section (32) abuts against the assembly ring (23) and its outer peripheral wall is substantially flush with the outer peripheral wall of the assembly ring (23); the portion of the third section (33) located radially outside the second section (32) constitutes the assembly edge (34).

3. The spray arm installation structure for cleaning machine door according to claim 2, characterized in that: The inner edge of the locking member (4) is provided with a first vertical side wall (43) arranged along the circumferential direction, the first vertical side wall (43) is sleeved on the outer circumference of the assembly ring (23) and the second section (32), and a rotational mating surface is formed between the top of the first vertical side wall (43) and the lower surface of the third section (33).

4. The spray arm installation structure for cleaning machine door according to claim 3, characterized in that: The outer edge of the locking member (4) is provided with a second vertical side wall (44) arranged vertically, and the second vertical side wall (44) and the first vertical side wall (43) enclose the installation groove (41), the outer surface of the second vertical side wall (44) is provided with an external thread, and the outer surface of the plug-in sleeve (13) is provided with an internal thread matching the external thread.

5. The spray arm installation structure for cleaning machine door according to claim 2, characterized in that: The inner diameter of the third section (33) is greater than the inner diameter of the first section (31), and the inner peripheral wall of the second section (32) forms a flow guide slope (35) extending obliquely from the lower edge of the third section (33) to the upper edge of the first section (31).

6. The spray arm installation structure for cleaning machine door according to claim 5, characterized in that: The inner top wall of the door body (1) is provided with a water guide sleeve (121) extending downwardly along the water guide port (12) to the third section (33) in the water inlet sleeve (3); the inner diameter of the water guide sleeve (121) matches the inner diameter of the first section (31); the outer diameter of the water guide sleeve (121) is smaller than the outer diameter of the third section (33) and the lower end is arranged corresponding to the guide slope (35).

7. The spray arm installation structure for cleaning machine door according to claim 2, characterized in that: The outer peripheral wall of the first section (31) is provided with a limiting convex clamp (311), and correspondingly, a clamping opening (231) capable of being engaged with the limiting convex clamp (311) and limiting the position is opened on the circumference of the assembly ring (23).

8. A method for installing a spray arm on a cleaning machine door, characterized in that: The spray arm installation structure for cleaning a machine door according to any one of claims 1 to 7 comprises the following steps: During installation, the spray arm (2) is placed on the operating platform with the water inlet (21) facing upwards, the locking piece (4) is first sleeved on the outer periphery of the assembly ring (23) and allowed to naturally sink and rest against the spray arm (2) by gravity, and then the lower part of the water inlet sleeve (3) is inserted into the inner periphery of the assembly ring (23) and rotated at a certain angle to lock the two; the lower surface of the door body (1) is facing upwards, and the spray arm (2) is buckled into the installation cavity (11). At this time, the spray arm (2) is close to the locking piece (4) due to gravity, and the two are limited. The plug-in sleeve (13) is inserted into the installation groove (41), and the spray arm (2) is rotated, so that the plug-in sleeve (13) is threadedly locked and connected with the side wall of the installation groove (41); In the door-closed state, the spray arm (2) moves away from the locking member (4) under the action of gravity and the limit is cancelled, so that the spray arm (2) can rotate relative to the locking member (4); When disassembling, the door body (1) is opened until the lower surface of the door body (1) faces upward. At this time, the spray arm (2) is close to the locking member (4) under the action of gravity so that the two are limited. The spray arm (2) is rotated to release the threaded locking connection between the plug sleeve (13) and the side wall of the installation groove (41), and the spray arm (2) can be removed.

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