Cleaning machine

Abstract

The cleaning machine comprises a box body, a door body and a hinge assembly, the hinge assembly comprises a door hinge, a pull rope and an elastic piece, the elastic piece is horizontally arranged on the side portion of a base of the box body, the front end of the elastic piece is restrained on the base, and the rear end of the elastic piece is connected with the second end of the pull rope. According to the hinge assembly, a linear spring in an existing hinge assembly is improved, the elastic piece formed by winding the long-strip-shaped metal sheet in the circumferential direction and conducting lamination and compression in the axial direction is adopted, every time the elastic piece is wound by one circle, the elastic piece shows at least two wave troughs and two wave crests in the axial direction, and in the two mutually-connected circles, the wave troughs and the wave crests are staggered. The wave trough part of the previous circle abuts against the wave crest part of the next circle to form an elastic supporting position, the width of the elastic piece is increased, and the elastic supporting position improves the transmission sensitivity of elastic force, so that the drawing force of a unit area can be improved, the spring is used in a cleaning machine, the height of the spring can be reduced by about 20%, the assembling space is saved, and the assembling efficiency is improved. And the base of the box body can be conveniently lowered, so that the overall cost is reduced.

Description

Technical Field

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

[0002] Dishwashers have become a relatively common household appliance. Chinese utility model patent ZL201520248676.2 "Dishwasher" discloses a structure, including: a body, a chamber with an open front end is defined in the body; a door body, the door body is arranged at the opening of the chamber, and the lower end of the door body is pivotally connected to the body to open and close the chamber; a door lock, the door lock is arranged on the body and connected to the upper end of the door body to lock and unlock the door body; an electric control board, the electric control board is connected to the door lock and controls the door lock to lock and unlock the door body; a connecting member, the connecting member is arranged between the body and the door body, a part of the connecting member is connected to the body and the other part is detachably connected to the door body, and the connecting member limits the opening angle of the door body relative to the body when connected to the door body.

[0003] The connecting piece structure disclosed in the above scheme adopts an ordinary linear spring to offset the gravity during the opening and closing of the door. Since the door is heavy and opens and closes many times, the ordinary linear spring needs to have a larger axial length and radial length to meet the tensile force requirements, resulting in a higher assembly space. This requires a corresponding increase in the base height, which greatly increases the product cost. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a cleaning machine which can reduce the size of the elastic part, thereby reducing the assembly space and further reducing the cost, in view of the current status of the prior art.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] A cleaning machine comprises a box, a door and a hinge assembly, wherein the box is provided with an opening on the front side, the bottom of the door can be turned over and arranged at the bottom edge of the opening to open or close the opening, the hinge assembly is connected between the door and the base of the box, and the hinge assembly comprises:

[0007] A door hinge is arranged on the side of the door body, and the rear part of the door hinge is rotatably connected to the side of the box body;

[0008] A pull rope, the first end of which is connected to the rear end of the door hinge, the second end of which is supported by a guide wheel and then extends backward at the side of the box base, and the rear section of the pull rope forms a horizontal forward extension path;

[0009] An elastic member, which is horizontally arranged on the side of the box base and has a front end constrained on the base and a rear end connected to the second end of the pull rope;

[0010] The elastic member is formed by winding a long strip of metal sheet circumferentially and stacking and compressing it axially. After each winding, the elastic member presents at least two troughs and two peaks in the axial direction. In the two interconnected circles, the trough part of the upper circle rests on the peak part of the lower circle to form an elastic support position.

[0011] The utility model improves the linear spring in the existing hinge assembly and adopts an elastic member formed by winding a long strip of metal sheet in the circumferential direction and stacking and compressing in the axial direction. For each circle of the elastic member, the elastic member presents at least two troughs and two crests in the axial direction. In the two circles connected to each other, the trough part of the upper circle abuts against the crest part of the lower circle to form an elastic support position. Since the width of the elastic member is increased and the elastic support has improved transmission sensitivity to the elastic force, the tensile force per unit area can be increased. When used in a cleaning machine, the height of the spring can be reduced by about 20%, thereby saving assembly space and making it convenient to lower the base of the box, thereby reducing costs overall.

[0012] Preferably, the width direction of the metal sheet is consistent with the radial direction of the elastic member. With such a structure, better supporting force can be provided in the radial direction.

[0013] Preferably, at each of the elastic support positions, a line contact structure is formed between the trough portion of the previous circle and the peak portion of the next circle, which is conducive to improving the feedback sensitivity of the elastic support position to the elastic force.

[0014] Preferably, the linear direction corresponding to the line contact structure is consistent with the radial direction of the elastic member. This structure is conducive to improving the stability of the elastic member during the expansion and contraction process, thereby maximizing its tensile force.

[0015] Preferably, each circle of the elastic member has three troughs and three crests, and in two interconnected circles, the troughs of the upper circle are against the crests of the lower circle to form three elastic support positions. Providing three elastic support positions can provide better telescopic stability for the elastic member.

[0016] Preferably, viewed from the circumferential direction, the elastic member is divided into three shuttle-shaped openings with a wide middle and narrow ends by three elastic support positions, and two adjacent openings are arranged alternately up and down in the axial direction. The three openings formed by each circle are evenly distributed in the circumferential direction of the elastic member, and the multiple openings formed by each circle are arranged in a row along the axial direction. The above structure makes the elastic member compact and stable as a whole, which is conducive to improving the telescopic stability.

[0017] In the utility model, there are two guide wheels, the first guide wheel is arranged on the elastic member, the second guide wheel is located below the first guide wheel and arranged near the rear edge of the box base, and the pull rope passes around the bottom of the first guide wheel and the rear side of the second guide wheel and extends forward. The above structure is adopted to provide a reasonable tension limit for the hinge assembly.

[0018] Preferably, the front end of the elastic member is connected to the front edge of the box base through a card plate, and the rear end of the elastic member is connected to the second end of the pull rope through a card plate. A notch is provided on one side edge of the card plate, and the first corner of the inner end of the notch extends into the first side wall of the card plate and forms a first recess corresponding to the edge arrangement of the elastic member in the first side wall of the card plate, and the second corner of the inner end of the notch extends into the second side wall of the card plate and forms a second recess corresponding to the edge arrangement of the elastic member in the second side wall of the card plate. With the above structure, the end of the elastic member can be rotated from the notch to the opposite side of the card plate, so that the elastic member is clamped on the card plate, and the first recess and the second recess on both sides of the card plate respectively clamp part of the elastic member from the upper and lower directions to improve the fixing stability of the elastic member.

[0019] Compared with the prior art, the advantages of the utility model are: the utility model improves the linear spring in the existing hinge assembly, and adopts an elastic member formed by winding a long strip of metal sheet along the circumferential direction and stacking and compressing along the axial direction. For each circle of the elastic member, the elastic member presents at least two troughs and two peaks in the axial direction. In the two circles connected to each other, the trough part of the upper circle rests on the peak part of the lower circle to form an elastic support position. Since the width of the elastic member is increased and the elastic support improves the transmission sensitivity of the elastic force, the tensile force per unit area can be increased. When used in a cleaning machine, the height of the spring can be reduced by about 20%, thereby saving assembly space and facilitating the lowering of the box base, thereby reducing costs overall. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0021] Figure 2 for Figure 1 A schematic diagram of a part of the structure of the elastic member;

[0022] Figure 3 for Figure 2 Side view of

[0023] Figure 4 This is a schematic diagram of the structure of the card board in the embodiment of the utility model;

[0024] Figure 5 for Figure 4 Another angle of the picture. DETAILED DESCRIPTION

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

[0026] like Figures 1 to 5 As shown, the cleaning machine of this embodiment includes a housing 1, a door 2 and a hinge assembly 3. An opening is arranged on the front side of the housing 1, and the bottom of the door 2 can be flipped and arranged at the bottom edge of the opening to open or close the opening.

[0027] The hinge assembly 3 is connected between the door body 2 and the base 11 of the box body 1. The hinge assembly 3 of this embodiment includes a door hinge 31, a pull rope 32, and an elastic member 33. The door hinge 31 is arranged on the side of the door body 2, and the rear part of the door hinge 31 is rotatably connected to the side of the box body 1; the first end of the pull rope 32 is connected to the rear end of the door hinge 31, and the second end is supported by the guide wheel 34 and extends backward on the side of the base 11 of the box body 1 after the reversal, and the rear section of the pull rope 32 forms a horizontal forward extension path. The elastic member 33 is horizontally arranged on the side of the base 11 of the box body 1, and the front end is constrained on the base 11, and the rear end is connected to the second end of the pull rope 32.

[0028] The elastic member 33 is formed by winding a long strip of metal sheet circumferentially and stacking and compressing it axially. After each winding, the elastic member presents at least two troughs 331 and two peaks 332 in the axial direction. In the two interconnected circles, the trough 331 of the previous circle rests against the peak 332 of the next circle to form an elastic support position 333.

[0029] The width direction of the metal sheet is consistent with the radial direction of the elastic member 33. With such a structure, better support force can be provided in the radial direction. At each elastic support position 333, a line contact structure 334 is formed between the trough part 331 of the previous circle and the peak part 332 of the next circle. This structure is conducive to improving the feedback sensitivity of the elastic support position 333 to the elastic force. The linear direction corresponding to the line contact structure 334 is consistent with the radial direction of the elastic member 33. This structure is conducive to improving the stability of the elastic member during the expansion and contraction process, thereby maximizing its tensile force.

[0030] In this embodiment, each circle of the elastic member 33 is correspondingly formed with three troughs 331 and three crests 332. In two circles connected to each other, each trough 331 of the upper circle is correspondingly pressed against each crest 332 of the lower circle to form three elastic support positions 333. Providing three elastic support positions 333 can provide better telescopic stability for the elastic member.

[0031] From the circumferential direction, the elastic member 33 is divided into three shuttle-shaped openings 335 with a wide middle and narrow ends by three elastic support positions 333, and two adjacent openings 335 are arranged alternately up and down in the axial direction. The three openings 335 formed by each circle are evenly distributed in the circumferential direction of the elastic member 33, and the multiple openings 335 formed by each circle are arranged in a row along the axial direction. The above structure makes the elastic member 33 compact and stable as a whole, which is conducive to improving the telescopic stability.

[0032] In this embodiment, there are two guide wheels 34, the first guide wheel 34 is arranged on the elastic member 33, the second guide wheel 34 is located below the first guide wheel 34 and arranged near the rear edge of the base 11 of the box body 1, and the pull rope 32 passes around the bottom of the first guide wheel 34 and the rear side of the second guide wheel 34 and extends forward. The above structure is adopted to provide a reasonable tension limit for the hinge assembly.

[0033] The front end of the elastic member 33 of this embodiment is connected to the front edge of the base 11 of the box body 1 through the clamping plate 35, and the rear end of the elastic member 33 is connected to the second end of the pull rope 32 through the clamping plate 35. A notch 350 is provided on one side edge of the clamping plate 35, and the first corner of the inner end of the notch 350 extends into the first side wall 01 of the clamping plate 35 and forms a first concave pit 351 arranged in correspondence with the edge of the elastic member 33 in the first side wall of the clamping plate 35, and the second corner of the inner end of the notch 350 extends into the second side wall 02 of the clamping plate 35 and forms a second concave pit 352 arranged in correspondence with the edge of the elastic member 33 in the second side wall of the clamping plate 35. With the above structure, the end of the elastic member 33 can be rotated from the notch 350 to the opposite side of the clamping plate 35, so that the elastic member 33 is clamped on the clamping plate 35, and the first concave pit 351 and the second concave pit 352 on both sides of the clamping plate 35 respectively clamp part of the elastic member 33 from the upper and lower directions, so as to improve the fixing stability of the elastic member 33. The clamping plate 35 on the front side of the elastic member 33 can be fixed to the front side of the base 11 through a shaft or a nut connected to its central hole 353 , and the clamping plate 35 on the rear side of the elastic member 33 can be locked with the pull rope 32 through its central hole 353 .

[0034] The present embodiment improves the linear spring in the existing hinge assembly 3, and adopts an elastic member 33 formed by winding a long strip of metal sheet along the circumferential direction and stacking and compressing along the axial direction. For each winding of the elastic member 33, the elastic member presents at least two troughs 331 and two crests 332 in the axial direction. In the two interconnected circles, the trough 331 of the upper circle abuts against the crest 332 of the lower circle to form an elastic support position 333. Since the width of the elastic member is increased and the elastic support 333 improves the transmission sensitivity of the elastic force, the tensile force per unit area can be increased. When used in a cleaning machine, the height of the spring can be reduced by about 20%, thereby saving assembly space and making it convenient to lower the base of the box, thereby reducing the cost overall.

[0035] 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 cleaning machine, comprising a housing (1), a door (2) and a hinge assembly (3), wherein the housing (1) is provided with an opening on the front side, the bottom of the door (2) is arranged at the bottom edge of the opening and can be turned over to open or close the opening, the hinge assembly (3) is connected between the door (2) and a base (11) of the housing (1), and is characterized in that: The hinge assembly (3) comprises A door hinge (31) is arranged on the side of the door body (2), and the rear part of the door hinge (31) is rotatably connected to the side of the box body (1); A pull rope (32), wherein the first end of the pull rope (32) is connected to the rear end of the door hinge (31), and the second end of the pull rope (32) is supported by a guide wheel (34) and then extends backward on the side of the base (11) of the box body (1), and the rear section of the pull rope (32) forms a horizontal forward extension path; An elastic member (33), the elastic member (33) being horizontally arranged on the side of the base (11) of the box body (1), with the front end of the elastic member (33) being constrained on the base (11) and the rear end of the elastic member (33) being connected to the second end of the pull rope (32); The elastic member (33) is formed by winding a long strip of metal sheet in the circumferential direction and stacking and compressing in the axial direction. After each winding, the elastic member presents at least two troughs and two crests in the axial direction. In the two interconnected circles, the trough part (331) of the upper circle abuts against the crest part (332) of the lower circle to form an elastic support position (333).

2. The cleaning machine according to claim 1, characterized in that: The width direction of the metal sheet is consistent with the radial direction of the elastic member (33) formed.

3. The cleaning machine according to claim 2, characterized in that: At each of the elastic support positions (333), a line contact structure (334) is formed between the wave valley portion (331) of the previous circle and the wave peak portion (332) of the next circle.

4. The cleaning machine according to claim 3, characterized in that: The linear direction corresponding to the linear contact structure (334) is consistent with the radial direction of the elastic member (33) formed.

5. The cleaning machine according to any one of claims 1 to 4, characterized in that: Each circle of the elastic member (33) is correspondingly formed with three troughs and three crests (332). In two circles connected to each other, each trough (331) of the upper circle is correspondingly pressed against each crest (332) of the lower circle to form three elastic support positions (333).

6. The cleaning machine according to claim 5, characterized in that: Viewed from the circumferential direction, the elastic member (33) is divided into three shuttle-shaped openings (335) by three elastic support positions (333) and the three openings (335) are wide in the middle and narrow at both ends, and two adjacent openings (335) are arranged alternately up and down in the axial direction.

7. The cleaning machine according to claim 6, characterized in that: The three openings (335) formed in each circle are evenly distributed in the circumferential direction of the elastic member (33), and the multiple openings (335) formed in each circle are arranged in a row along the axial direction.

8. The cleaning machine according to any one of claims 1 to 4, characterized in that: There are two guide wheels (34), the first guide wheel (34) is arranged on the elastic member (33), the second guide wheel (34) is located below the first guide wheel (34) and arranged close to the rear edge of the base (11) of the box body (1), and the pull rope (32) passes around the bottom of the first guide wheel (34) and the rear side of the second guide wheel (34) and extends forward.

9. The cleaning machine according to any one of claims 1 to 4, characterized in that: The front end of the elastic member (33) is connected to the front edge of the base (11) of the box body (1) through a clamping plate (35), and the rear end of the elastic member (33) is connected to the second end of the pull rope (32) through the clamping plate (35).

10. The cleaning machine according to claim 9, characterized in that: A notch (350) is provided on one side edge of the card plate (35), a first corner portion of the inner end of the notch (350) extends into the first side wall of the card plate (35) and forms a first recess (351) in the first side wall of the card plate (35) corresponding to the edge arrangement of the elastic member (33), and a second corner portion of the inner end of the notch (350) extends into the second side wall of the card plate (35) and forms a second recess (352) in the second side wall of the card plate (35) corresponding to the edge arrangement of the elastic member (33).

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