Spraying arm for cleaning machine and cleaning machine

Abstract

The spraying arm comprises a body with a flow channel, a water outlet communicated with the flow channel is formed in the side wall of the body, a nozzle is rotationally connected to the water outlet, and a water inlet sleeve capable of being matched with the water outlet in an inserted mode and rotationally connected with the water outlet is arranged at the bottom of the nozzle. The edge of the lower end of the water inlet sleeve is provided with clamping jaws capable of being matched with the inner top wall of the body at the water outlet for limiting, and at least one clamping jaw is an elastic clamping jaw capable of stretching out and drawing back in the radial direction relative to the water inlet sleeve. In the assembling process, in the process that the water inlet sleeve is inserted into the water outlet, the elastic clamping jaw is extruded to retract into the water inlet sleeve, so that the water inlet sleeve can be inserted into the water outlet more smoothly under the condition that extrusion is reduced, after the water inlet sleeve is inserted in place, extrusion to the elastic clamping jaw is eliminated, the elastic clamping jaw extends out and limits the lower edge of the water inlet sleeve, and assembling is convenient; therefore, the connecting structure of the nozzle and the water outlet is protected, and the rotating stability and the sealing performance of the nozzle can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, in particular to a spray arm for a washing machine and a washing machine. Background Art

[0002] Dishwashers are generally provided with a spray arm that rinses dishes or fruits and vegetables by spraying water jets. For example, the applicant's prior application CN202211611048.7 "A washing machine" discloses a structure, which includes a box and a spray arm, the spray arm is rotatably arranged in the box, the spray arm is provided with a hollow flow channel, the spray arm is also provided with a water outlet connected to the flow channel, the water outlet is connected to a nozzle that can rotate relative to the spray arm, and the upper surface of the spray arm is provided with a concave installation groove for installing the nozzle and in a semi-enclosed structure.

[0003] The above structure is provided with a nozzle at the end of the spray arm which can rotate with the spray arm and can rotate relative to the spray arm, which is conducive to eliminating the cleaning dead angle. The nozzle is constrained on the spray arm by the claw at its water inlet. During assembly, the claw is inserted into the connection hole of the spray arm by deformation and extrusion, which can easily cause the water inlet of the nozzle to break or be damaged, affecting the rotation stability of the nozzle or causing water leakage. Utility Model Content

[0004] The first technical problem to be solved by the utility model is to provide a spray arm for a cleaning machine that can avoid extrusion deformation during assembly to protect the connection structure between the nozzle and the spray arm, thereby improving the stability of the nozzle and the assembly sealing.

[0005] The second technical problem to be solved by the utility model is to provide a cleaning machine using the above-mentioned spray arm in view of the current status of the prior art.

[0006] The technical solution adopted by the utility model to solve at least one of the above technical problems is:

[0007] A spray arm for a cleaning machine comprises a body with a flow channel, a water outlet connected to the flow channel is provided on the side wall of the body, a nozzle is rotatably connected to the water outlet, a water inlet sleeve which can be plugged into and rotatably connected to the water outlet is provided at the bottom of the nozzle, a claw which can cooperate with the top wall of the body at the water outlet to limit the position is provided at the lower end edge of the water inlet sleeve, and at least one of the claws is an elastic claw which can be radially extended and retracted relative to the water inlet sleeve.

[0008] The utility model provides a clamping claw at the lower end of the water inlet sleeve of the nozzle, which can constrain the water inlet sleeve at the water outlet of the body, and at least one clamping claw is an elastic clamping claw that can be radially extended and retracted relative to the water inlet sleeve. During assembly, when the water inlet sleeve is inserted into the water outlet, the elastic clamping claw is squeezed and retracted into the water inlet sleeve, so that the water inlet sleeve can be inserted into the water outlet more smoothly under the condition of reduced squeezing. After being inserted into place, the squeezing of the elastic clamping claw is eliminated, and the elastic clamping claw stretches out and limits the lower edge of the water inlet sleeve. The assembly is convenient, and the problem of squeezing and deformation of the clamping claw is avoided, thereby protecting the connection structure between the nozzle and the water outlet, which is beneficial to improving the rotation stability and sealing of the nozzle.

[0009] Preferably, there are at least two claws, the first claw is a fixed claw provided on one side of the water inlet sleeve, and the second claw is an elastic claw provided on the other side of the water inlet sleeve and arranged opposite to the first claw. The elastic claw is symmetrically arranged with a fixed claw, which, on the one hand, ensures the reliability of the nozzle at the water outlet after assembly, and, on the other hand, can also be used to adjust the assembly gap between the water inlet sleeve and the water outlet during assembly, and the elastic claw is used to reduce or avoid squeezing of the water inlet sleeve claw.

[0010] Preferably, the elastic claw comprises a claw body and an elastic member, the outer side wall of the water inlet sleeve is provided with a receiving groove extending in the radial direction, the claw body is telescopically arranged in the receiving groove, the elastic member is arranged in the receiving groove and makes the claw body always maintain a tendency to extend outward, and at least the lower part of the outer side wall of the claw body is formed with a first guide surface that gradually tilts from top to bottom toward the center of the water inlet sleeve. With the above structure, when the first guide surface of the elastic claw is squeezed during the process of inserting the water inlet sleeve into the water outlet, it can be gradually retracted into the receiving groove along the first guide surface, and the avoidance of the elastic claw leaves more space for other claws, thereby avoiding the damage caused by hard squeezing.

[0011] Further preferably, a second guide surface is formed on the upper part of the outer wall of the claw body, which is gradually inclined from bottom to top toward the center of the water inlet sleeve. The second guide surface is provided mainly to facilitate the removal of the nozzle. When the nozzle needs to be removed, the nozzle is squeezed toward the fixed claw opposite the elastic claw, and an upward force is applied at the same time. The elastic claw can be gradually retracted into the accommodating groove under the guidance of the second guide surface. After the elastic claw is avoided, the other fixed claws have better space to be taken out from the water outlet, avoiding damage caused by excessive squeezing.

[0012] Preferably, the slope of the second guide surface is smaller than that of the first guide surface, and the height of the first guide surface is 2 to 5 times the height of the second guide surface. Such a structure is adopted to take into account three functions: (1) the first guide surface is convenient for realizing the extension and retraction of the elastic claw during assembly; (2) the second guide surface is convenient for realizing the extension and retraction of the elastic claw during disassembly; (3) after assembly, the elastic claw is reliably limited to the top wall of the body.

[0013] Preferably, the inner top wall of the accommodating groove is provided with a stopper block with a trapezoidal cross section having a small upper end and a large lower end, and correspondingly, the top wall of the claw body is provided with a stopper groove which penetrates the water inlet jacket in a radial direction and is slidably matched with the stopper block. With the above structure, on the one hand, the extension and contraction of the elastic claw is guided, and on the other hand, the elastic claw is limited in the up and down directions.

[0014] Preferably, both sides of the claw body are provided with notch grooves extending inward from the outer end, the notch groove is blind at one end near the center of the water inlet sleeve, and the outer side wall of the water inlet sleeve is provided with a clamping foot at the side edge near the accommodating groove that can cooperate with the notch groove guide and cooperate with the blind end of the notch groove to limit the position. This structure is mainly used to limit the length of the elastic claw extending outward.

[0015] Preferably, the inner end surface of the claw body is provided with a positioning groove, and correspondingly, the inner end surface of the receiving groove is provided with a positioning column, and the elastic member is a spring with one end sleeved on the positioning column and the other end constrained in the positioning groove. This structure facilitates the positioning of the elastic member and makes it reliable to install.

[0016] Preferably, there are four claws evenly distributed in the circumferential direction of the water inlet sleeve, three of which are fixed claws and one is an elastic claw. This structure is conducive to taking into account both the installation reliability and rotation stability of the nozzle.

[0017] A cleaning machine comprises a box body, a concave water return area is arranged at the bottom of the box body, the top of the water return area is covered with a filter plate, and an upper spray arm is rotatably arranged on the filter plate and connected to the water return area through a water pump mechanism.

[0018] Compared with the prior art, the utility model has the following advantages: the utility model is provided with a claw at the lower end of the water inlet sleeve of the nozzle which can constrain it at the water outlet of the main body, and at least one claw is an elastic claw which can be radially extended and retracted relative to the water inlet sleeve. During assembly, when the water inlet sleeve is inserted into the water outlet, the elastic claw is squeezed and retracted into the water inlet sleeve, so that the water inlet sleeve can be inserted into the water outlet more smoothly with reduced squeezing. After being inserted into place, the squeezing of the elastic claw is eliminated, and the elastic claw extends out and limits the lower edge of the water inlet sleeve. The assembly is convenient, and the problem of squeezing and deformation of the claw is avoided, thereby protecting the connection structure between the nozzle and the water outlet, which is beneficial to improving the rotation stability and sealing of the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the spray arm of an embodiment of the utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the bottom structure;

[0021] Figure 3 for Figure 1 A partial cross-sectional view of

[0022] Figure 4 This is an assembly diagram of the nozzle and the body of the utility model embodiment;

[0023] Figure 5 This is a schematic diagram of the structure of the claw body in the embodiment of the utility model;

[0024] Figure 6 for Figure 5 Another angle view of . DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] like Figures 1 to 6 As shown, the spray arm for the washing machine of this embodiment includes a main body 1 extending in the length direction, and the main body 1 is hollow inside to form a flow channel 12, and the flow channel 12 also extends in the length direction of the main body 1. A water inlet 13 connected to the flow channel is provided at the central part of the bottom wall of the main body 1, and a plurality of spray holes arranged at intervals and connected to the flow channel are provided on the top wall of the main body 1. A water outlet 15 arranged near the end is provided on the top wall of the main body 1, and a nozzle 2 that can rotate relative to the main body 1 is rotatably connected to the water outlet 15, and a spray hole is provided on the nozzle 2. The nozzle 2 is located at the end of the spray arm, and while rotating with the spray arm, it can also rotate by itself, so as to spray the outer periphery of the bowl basket and the inner wall of the washing chamber, so as to further eliminate the cleaning dead corners and improve the cleaning effect.

[0027] The nozzle 2 of this embodiment is disc-shaped, and a water inlet sleeve 21 which can be plugged into and rotatably connected to the water outlet 15 is provided at the bottom of the nozzle 2. A claw 22 which can cooperate with the inner top wall of the main body 1 at the water outlet 15 to limit the position is provided at the lower edge of the water inlet sleeve 21. At least one claw 22 is an elastic claw 220 which can radially extend and retract relative to the water inlet sleeve 21.

[0028] In this embodiment, there are four claws 22 evenly distributed in the circumferential direction of the water inlet jacket 21, three claws 22 are fixed claws, and one claw is an elastic claw 220. This structure is conducive to taking into account both the installation reliability and rotation stability of the nozzle 2.

[0029] The first clamping claw 22 of this embodiment is a fixed clamping claw provided on one side of the water inlet sleeve 21, and the second clamping claw is an elastic clamping claw 220 provided on the other side of the water inlet sleeve 21 and arranged opposite to the first clamping claw 22. The elastic clamping claw 220 is arranged symmetrically with a fixed clamping claw, on the one hand, to ensure the reliability of the constraint of the nozzle 2 at the water outlet 15 after the assembly is completed, and on the other hand, the assembly gap between the water inlet sleeve 21 and the water outlet 15 can be used for adjustment during assembly, and the elastic clamping claw 220 can be used to reduce or avoid squeezing the clamping claws of the water inlet sleeve 21.

[0030] In this embodiment, the elastic claw 220 includes a claw body 221 and an elastic member 222. The outer wall of the water inlet jacket 21 is provided with a receiving groove 211 extending in the radial direction. The claw body 221 is retractably arranged in the receiving groove 211. The elastic member 222 is arranged in the receiving groove 211 and makes the claw body 221 always maintain a tendency to extend outward. The outer wall of the claw body 221 is formed with a first guide surface 201 which is gradually inclined from top to bottom toward the center of the water inlet jacket 21. With the above structure, when the first guide surface 201 of the elastic claw 220 is squeezed during the process of inserting the water inlet jacket 21 into the water outlet 15, it can be gradually retracted into the receiving groove 211 along the first guide surface 201. The avoidance of the elastic claw 220 leaves more space for other claws, thereby avoiding the damage caused by hard squeezing.

[0031] The upper part of the outer wall of the claw body 221 is formed with a second guide surface 202 which is gradually inclined from bottom to top toward the center of the water inlet sleeve 21. The second guide surface 202 is provided mainly to facilitate the disassembly of the nozzle 2. When the nozzle 2 needs to be disassembled, the nozzle 2 is squeezed toward the fixed claw opposite to the elastic claw 220, and an upward force is applied at the same time. The elastic claw 220 can be gradually retracted into the accommodating groove 211 under the guidance of the second guide surface 202. After the elastic claw 220 is avoided, the other fixed claws have better space to be taken out from the water outlet 15, avoiding damage caused by excessive squeezing.

[0032] The slope of the second guide surface 202 is smaller than that of the first guide surface 201, and the height of the first guide surface 201 is 2 to 5 times the height of the second guide surface 202. This structure is adopted to take into account three functions: (1) the first guide surface 201 is convenient for realizing the extension and retraction of the elastic claw 220 during assembly; (2) the second guide surface 202 is convenient for realizing the extension and retraction of the elastic claw 220 during disassembly; (3) after assembly, the elastic claw 220 and the inner top wall of the body 1 are reliably limited.

[0033] The inner top wall of the accommodating groove 211 is provided with a stopper block 2111 with a trapezoidal cross section having a small upper end and a large lower end. Correspondingly, the top wall of the claw body 221 is provided with a stopper groove 2211 which penetrates the water inlet jacket 21 in a radial direction and is slidably matched with the stopper block 2111. With the above structure, the elastic claw 220 is guided to extend and retract on the one hand, and the elastic claw 220 is limited in the up and down directions on the other hand.

[0034] The two sides of the claw body 221 are provided with notch grooves 2201 extending inward from the outer end, and the notch groove 2201 is a blind end at one end near the center of the water inlet sleeve 21. The outer wall of the water inlet sleeve 21 is provided with a clamping foot 212 at the side edge near the accommodating groove 211, which can cooperate with the notch groove 2201 for guidance and limit with the blind end of the notch groove 2201. This structure is mainly used to limit the length of the elastic claw 220 extending outward.

[0035] The inner end surface of the claw body 221 is provided with a positioning groove 2212, and correspondingly, the inner end surface of the receiving groove 211 is provided with a positioning column 2112, and the elastic member 222 is a spring with one end sleeved on the positioning column 2112 and the other end constrained in the positioning groove 2212. This structure facilitates the positioning of the elastic member 222 and makes it reliable to install.

[0036] The cleaning machine of this embodiment includes a box body, a concave water return area is provided at the bottom of the box body, the top of the water return area is covered with a filter plate, and also includes the above-mentioned spray arm, which is rotatably provided on the filter plate and is connected to the water return area through a water pump mechanism. A slag collection basket for collecting slag during the cleaning process is also provided, the lower part of the slag collection basket is accommodated in the water return area, and the top of the slag collection basket has a slag collection port exposed from the filter plate to facilitate slag collection.

[0037] In this embodiment, a claw 22 is provided at the lower end of the water inlet sleeve 21 of the nozzle 2 to constrain it at the water outlet 15 of the main body, and at least one claw is an elastic claw 220 that can be radially extended and retracted relative to the water inlet sleeve. During assembly, when the water inlet sleeve 21 is inserted into the water outlet 15, the elastic claw 220 is squeezed and retracted into the water inlet sleeve, so that the water inlet sleeve 21 can be inserted into the water outlet 15 more smoothly with reduced squeezing. After being inserted into place, the squeezing of the elastic claw 220 is eliminated, and the elastic claw 220 extends out and limits the lower edge of the water inlet sleeve 21, which is convenient for assembly and avoids the problem of claw squeezing and deformation, thereby protecting the connection structure between the nozzle 2 and the water outlet 15, which is beneficial to improving the rotation stability and sealing of the nozzle 2.

[0038] 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 for a cleaning machine, comprising a body (1) having a flow channel, a water outlet (15) connected to the flow channel is provided on a side wall of the body (1), a nozzle (2) is rotatably connected to the water outlet (15), and the characteristics are: The bottom of the nozzle (2) is provided with a water inlet sleeve (21) which can be plugged into and rotatably connected to the water outlet (15), and the lower edge of the water inlet sleeve (21) is provided with a clamping claw (22) which can cooperate with the inner top wall of the body (1) at the water outlet (15) to limit the position, and at least one of the clamping claws (22) is an elastic clamping claw (220) which can be radially extended and retracted relative to the water inlet sleeve (21).

2. The spray arm for a cleaning machine according to claim 1, characterized in that: There are at least two claws (22), the first claw (22) is a fixed claw arranged on one side of the water inlet jacket (21), and the second claw (22) is an elastic claw (220) arranged on the other side of the water inlet jacket (21) and opposite to the first claw (22).

3. The spray arm for a cleaning machine according to claim 2, characterized in that: The elastic claw (220) comprises a claw body (221) and an elastic member (222); the outer wall of the water inlet jacket (21) is provided with a receiving groove (211) extending in the radial direction; the claw body (221) is telescopically arranged in the receiving groove (211); the elastic member (222) is arranged in the receiving groove (211) and enables the claw body (221) to always maintain a tendency to extend outward; and at least the lower part of the outer wall of the claw body (221) is formed with a first guide surface (201) which is gradually inclined from top to bottom toward the center of the water inlet jacket (21).

4. The spray arm for a cleaning machine according to claim 3, characterized in that: A second guide surface (202) is formed on the upper portion of the outer wall of the claw body (221) and is gradually inclined from bottom to top toward the center of the water inlet jacket (21).

5. The spray arm for a cleaning machine according to claim 4, characterized in that: The slope of the second guide surface (202) is smaller than the slope of the first guide surface (201), and the height of the first guide surface (201) is 2 to 5 times the height of the second guide surface (202).

6. The spray arm for a cleaning machine according to any one of claims 3 to 5, characterized in that: The inner top wall of the accommodating groove (211) is provided with a limiting block (2111) having a trapezoidal cross-section with a small upper end and a large lower end. Correspondingly, the top wall of the claw body (221) is provided with a limiting groove (2211) which penetrates radially along the water inlet jacket (21) and slidably cooperates with the limiting block (2111).

7. The spray arm for a cleaning machine according to any one of claims 3 to 5, characterized in that: The two sides of the claw body (221) are provided with notch grooves (2201) extending inward from the outer end, and the notch groove (2201) is a blind end at one end close to the center of the water inlet sleeve (21). The outer wall of the water inlet sleeve (21) is provided with a clamping foot (212) at the side edge close to the accommodating groove (211) that can cooperate with the notch groove (2201) for guidance and limit with the blind end of the notch groove (2201).

8. The spray arm for a cleaning machine according to any one of claims 3 to 5, characterized in that: The inner end surface of the claw body (221) is provided with a positioning groove (2212), and correspondingly, the inner end surface of the receiving groove (211) is provided with a positioning column (2112), and the elastic member (222) is a spring with one end sleeved on the positioning column (2112) and the other end constrained in the positioning groove (2212).

9. The spray arm for a cleaning machine according to any one of claims 2 to 5, characterized in that: There are four clamping claws (22) which are evenly distributed in the circumferential direction of the water inlet jacket (21), three clamping claws (22) are fixed clamping claws, and one clamping claw (22) is an elastic clamping claw (220).

10. A cleaning machine, comprising a box, wherein a concave water return area is provided at the bottom of the box, and a filter plate is covered on the top of the water return area, characterized in that: It also includes the spray arm according to any one of claims 1 to 9, which is rotatably arranged on the filter plate and is connected to the return water area through a water pump mechanism.

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