CN107945421B

CN107945421B - Commercial washing machine

Info

Publication number: CN107945421B
Application number: CN201711063715.1A
Authority: CN
Inventors: 郑德帅; 程宝珍; 孙广彬; 王秀梅; 张开宏; 张纯锋
Original assignee: Haier Smart Home Co Ltd; Qingdao Jiaozhou Haier Washing Electric Appliance Co Ltd
Current assignee: Haier Smart Home Co Ltd; Qingdao Jiaozhou Haier Washing Electric Appliance Co Ltd
Priority date: 2017-11-02
Filing date: 2017-11-02
Publication date: 2022-09-27
Anticipated expiration: 2037-11-02
Also published as: CN107945421A

Abstract

The invention relates to a commercial washing machine, which comprises a coin box, wherein an access hole is formed in the coin box, an upper cover used for sealing the access hole is arranged at the access hole, the upper cover is connected with the coin box through a screw, a special-shaped fifth die is arranged on the end surface of a screw nut, and/or the periphery of the screw nut is special-shaped, so that a screw driver can rotate the screw through the fifth die and/or the periphery of the screw nut to open and close the upper cover. The invention makes the opening and closing of the upper cover simpler and faster by connecting the upper cover with the coin box through the screw, and also makes the screw can be unscrewed only by using a matched tool by arranging the special-shaped profiling on the screw cap of the screw, thereby ensuring the safety of the coin box.

Description

Commercial washing machine

Technical Field

The present invention relates to a commercial washing machine.

Background

The traditional washing mode is time-consuming and inconvenient, along with the improvement of life rhythm and life quality, people in cities increasingly need a high-efficiency, convenient and sanitary washing mode, self-service washing is carried as the result, and a new trend of consumption is gradually formed, so that the coin-operated commercial washing machine is widely applied.

Commercial rotary drum washing machine can carry out corresponding detection and maintenance to coin selector and display panel computer board in the later stage, and for making things convenient for its operation, the upper cover that can open can be left to coin box rear end, and the design often controls opening and closing of upper cover with key and lock before. Maintenance personnel need carry various keys to carry out the maintenance and detection, and the process is more loaded down with trivial details and upper cover lock and key collocation cost can be higher relatively.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

The invention aims to provide a commercial washing machine, which aims to realize the purpose of opening an upper cover more quickly on the basis of ensuring the safety.

In order to realize the purpose, the invention adopts the following technical scheme:

a commercial washing machine comprises a coin box, wherein a maintenance opening is formed in the coin box, an upper cover used for sealing the maintenance opening is arranged at the maintenance opening and is connected with the coin box through a screw, the periphery of a special-shaped fifth compression type and/or a screw nut is special-shaped and arranged on the end face of the screw nut, and a screw rotating tool rotates the screw through the fifth compression type and/or the periphery of the screw nut to open and close the upper cover.

Furthermore, the access hole is formed in the upper side of the coin box, the periphery of the access hole is downwards sunken to form a first compression type, the upper cover is arranged in the first compression type and correspondingly matched with the first compression type, and the upper surface of the upper cover and the peripheral wall surface of the first compression type are arranged on the same plane.

Furthermore, the coin box is internally provided with a detachable installation part, and the upper cover is connected with the installation part through screws.

Further, the installed part is U type structure, including diapire and both sides wall, is equipped with the nut that supplies the screw connection on the diapire, and the installed part penetrates to inserting coin box inside back from the access hole, and the opening of U type structure upwards sets up, and both sides wall respectively with insert the relative both sides wall elastic extrusion that sets up of coin box to with access hole downside periphery wall spacing joint mutually, make installed part detachably locate and insert coin box inside.

Further, be equipped with the protruding multistage second die mould that sets up upwards and looks interval on the diapire of installed part, have the determining range between the adjacent second die mould respectively, on the diapire between the adjacent second die mould was located to the nut, the both sides wall of installed part supported the conflict with the second die mould respectively mutually.

Furthermore, two opposite side walls of the coin box are respectively provided with a third pressing die protruding towards the inside of the coin box, the third pressing die is arranged on one side of the access opening, the mounting piece is clamped and fixed on the other side of the access opening, and is pushed to slide to the upper side of the third pressing die and abut against the third pressing die in a supporting manner;

preferably, one side of the third press mold is provided with a mounting piece, and the other side of the third press mold is provided with a wall surface which is connected with two opposite side walls of the coin box and forms the coin box, so that the mounting piece slides to the upper side of the third press mold and then is abutted against the wall surface.

Furthermore, one side of the upper cover is connected with the coin box through a screw, and the other side of the upper cover is rotatably connected with the coin box.

Further, the both sides of upper cover are equipped with one respectively and are located the upper cover downside, the connecting piece that extends to the opposite side from one side of upper cover screw connection, the clearance has between connecting piece and the upper cover, its one end is connected with the upper cover, the other end extends to the space that the upper cover covered outside, the extension of connecting piece is served and is equipped with the convex card that makes progress and protruding, the clearance has between protruding and the upper cover of card, when the upper cover is closed, will block protruding passing access hole, close along with the rotation of upper cover, access hole upside periphery wall penetrates to the clearance between connecting piece and the upper cover from the clearance between protruding and the upper cover of card, and inconsistent with the upper cover, the protruding tip of card is inconsistent with access hole downside periphery wall.

Furthermore, the lower side of the upper cover is provided with a support frame extending downwards, and when the upper cover is closed, the support frame penetrates through the access hole and is in limited abutting contact with the inner wall surface of the access hole.

Furthermore, the upper cover is provided with a screw hole for a screw to pass through, the periphery of the screw hole is recessed downwards to form a fourth pressing die, after the screw passes through the screw hole and is in threaded connection with the nut, the nut of the screw is arranged in the fourth pressing die and is correspondingly matched with the screw hole, and the upper surface of the nut of the screw is in smooth transition with the peripheral wall of the fourth pressing die.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention makes the opening and closing of the upper cover simpler and faster by connecting the upper cover with the coin box through the screw, and also makes the screw can be unscrewed only by using a matched tool by arranging the special-shaped profiling on the screw cap of the screw, thereby ensuring the safety of the coin box.

2. The invention can quickly restore the coin box to the initial state by detachably connecting the mounting piece with the coin box so as to carry out processing in other modes and connect the upper cover with the coin box in other modes, thereby ensuring that the coin box has universality and is suitable for industrial production.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments and that for a person skilled in the art, other drawings can also be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic structural diagram of an upper cover according to the present invention;

FIG. 2 is a schematic structural view of a mount provided by the present invention;

FIG. 3 is a schematic view of the coin box according to the present invention;

FIG. 4 is a schematic view of the installation of the upper cover and the coin box provided by the present invention;

FIG. 5 is a schematic view of the installation of the upper cover and the coin box provided by the present invention;

FIG. 6 is a schematic view of the installation of the upper cover and the coin box provided by the present invention;

FIG. 7 is a schematic structural view of three types of screws and nuts provided by the present invention;

FIG. 8 is a schematic view of another three embodiments of the present invention;

FIG. 9 is a schematic view of three other screw and nut configurations provided by the present invention;

wherein the names of the components are as follows:

1-upper cover, 2-screw hole, 3-mounting piece, 4-second press, 5-nut, 6-bottom wall, 7-side wall, 8-first extending part, 9-second extending part, 10-coin box, 11-access opening, 12-third press, 13-first press, 14-screw, 15-sheet metal bracket, 16-fourth press, 17-through hole, 18-first clamping part, 19-second clamping part, 20-connecting piece, 21-clamping protrusion, 22-supporting frame, 23-wall, 24-fifth press, 25-nut.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate it for those skilled in the art by reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments are described clearly and completely below, and the following embodiments are used for illustrating the present invention and are not used for limiting the scope of the present invention.

Example 1

As shown in fig. 1, 4, 5 and 6, the embodiment describes a commercial washing machine, which comprises a coin box 10, wherein an access opening 11 is arranged on the coin box 10, an upper cover 1 for closing the access opening 11 is arranged at the access opening 11, the upper cover 1 is connected with the coin box 10 through a screw 14, a specially-shaped fifth profiling 24 is arranged on the end surface of a nut 25 of the screw 14, and/or the periphery of the nut 25 of the screw 14 is specially-shaped, so that a screwdriver can screw the screw 14 through the fifth profiling 24 and/or the periphery of the nut 25 of the screw 14 to open and close the upper cover 1. The screw 14 is threaded through the end, and the length of the thread can be added according to the product requirements, which is not shown in the figure.

The horizontal section of the fifth profiling 24 on the end face of the screw 14 and the nut 25 is special-shaped and is not correspondingly matched with the bulge on the head of the common screwdriver, so that the common screwdriver cannot rotate the screw 14 and further cannot open the upper cover 1, and the safety of the coin box 10 is ensured; the horizontal section of the fifth press 24 can be a combination of several of a cross shape, a triangle shape, a semicircle shape, a water drop shape and a heart shape, and can also be Chinese characters, letters, numbers and the like; in order to enable the maintainer to open and close the upper cover 1, a screwdriver with a bulge matched with the horizontal section of the fifth die 24 is further arranged, so that the maintainer inserts the bulge at the head of the screwdriver into the fifth die 24 and then rotates the screwdriver, thereby rotating the screw 14 and realizing the opening and closing of the upper cover 1. The horizontal cross-section of the fifth profiling 24 on the end face of the nut 25 of the screw 14 can be three shapes as shown in a, b, c in fig. 7.

The periphery of the screw 14 and the nut 25 is specially-shaped and is not correspondingly matched with the horizontal section of the inner wall of the sleeve on the head of the common screwdriver, so that the common screwdriver cannot rotate the screw 14 and further cannot open the upper cover 1, and the safety of the coin box 10 is ensured; the periphery of the screw 14 and the screw cap 25 can be a combination of several of a cross shape, a triangle shape, a semicircle shape, a water drop shape and a heart shape, and can also be Chinese characters, letters, numbers and the like; in order to enable the maintainer to open and close the upper cover 1, the screw driver is also provided with a screw which has a horizontal section of the inner wall of the sleeve and is correspondingly matched with the periphery of the screw cap 25 of the screw 1, so that the maintainer can cover the sleeve at the head of the screw driver to the outer part of the periphery of the screw cap 25 of the screw 1 and then rotate the screw driver, thereby rotating the screw 14 and realizing the opening and closing of the upper cover 1. The screw 14 and the nut 25 may have three shapes on the periphery as shown in a, b and c in fig. 8.

The horizontal section of the fifth profiling 24 on the end face of the nut 25 of the screw 14 may be shaped, and the periphery of the nut 25 of the screw 14 may be shaped in three ways as shown in a, b and c in fig. 9.

Wherein, the coin box 10 is internally provided with a coin inserting device, a display and a coin storing box; preferably, the access opening 11 is located remotely from the magazine. Since the coin box is relatively safe since the upper cover 1 cannot be touched after being opened, other fixing means can be considered.

The invention makes the opening and closing of the upper cover 1 simpler and quicker by connecting the upper cover 1 with the coin box 10 through the screw 14, and also makes the screw 14 unscrew only by using a matched tool by arranging a special-shaped profiling on the nut 25 of the screw 14, thereby ensuring the safety of the coin box 10.

Preferably, the upper cover 1 is connected to the coin box 10 via a plurality of screws 14 provided with different patterns.

The above arrangement further improves the security of the coin box 10.

Example two

As shown in fig. 1, 4, 5 and 6, the present embodiment is different from the first embodiment in that a service opening 11 is provided at an upper side of a coin box 10, an outer periphery of the service opening 11 is recessed downward to form a first profiling 13, an upper cover 1 is provided in the first profiling 13 and is correspondingly matched, and an upper surface of the upper cover 1 and an outer peripheral wall surface of the first profiling 13 are provided on the same plane.

According to the invention, the attractiveness of the coin box 10 is improved by embedding the upper cover 1 into the first pressing type 13, the radial positioning of the upper cover 1 is realized, the prying difficulty of the upper cover 1 is increased, and the safety of the coin box 10 is improved.

The upper cover 1 is provided with a screw hole 2 for a screw 14 to pass through, the periphery of the screw hole 2 is recessed downwards to form a fourth pressing type 16, after the screw 14 passes through the screw hole 2 and is in threaded connection with the nut 5, a nut 25 of the screw 14 is arranged in the fourth pressing type 16 and is correspondingly matched with the fourth pressing type 16, and the upper surface of the nut 25 of the screw 14 is in smooth transition with the peripheral wall of the fourth pressing type 16.

Likewise, the present invention improves the aesthetic appearance of the coin box 10 by embedding the nut 25 of the screw 14 into the fourth die 16, achieves radial positioning of the nut 25 of the screw 14, and increases the difficulty of prying the nut 25 of the screw 14, thereby improving the security of the coin box 10.

EXAMPLE III

As shown in fig. 2, 4, 5 and 6, the present embodiment is different from the first and second embodiments in that a detachable mounting member 3 is provided inside the coin box 10, and the upper cover 1 is connected to the mounting member 3 via screws 14.

The invention can quickly restore the coin box 10 to the initial state by detachably connecting the mounting piece 3 with the coin box 10 so as to process in other modes, and the upper cover 1 is connected with the coin box 10 in other modes, so that the coin box 10 has universality and is suitable for industrial production.

Specifically, installed part 3 is U type structure, including diapire 6 and both sides wall 7, is equipped with the nut 5 that supplies screw 14 to connect on the diapire 6, and installed part 3 penetrates to inserting coin box 10 inside back from access hole 11, and the opening of U type structure upwards sets up, and both sides wall 7 respectively with insert the relative both sides wall elastic extrusion that sets up of coin box 10 to with 11 downside periphery wall spacing joints mutually of access hole, make installed part 3 detachably locate and insert coin box 10 inside.

The installation component 3 is clamped and fixed between two opposite side walls of the coin box 10, so that any installation structure is not required to be arranged on the coin box 10, and the coin box 10 can be restored to an initial state after the installation component 3 is disassembled.

Example four

As shown in fig. 2, 4, 5, 6, the difference between this embodiment and the first to third embodiment lies in that, the outside cover of nut 5 is equipped with annular sheet metal support 15, the upper end and the lower extreme of sheet metal support 15 are equipped with the first joint portion 18 of incurving shape, first joint portion 18 and nut 5 limit position joint mutually, make nut 5 be fixed in inside sheet metal support 15, the upper end of sheet metal support 15 still is equipped with the second joint portion 19 of outwards buckling, be equipped with through-hole 17 on diapire 6, sheet metal support 15 that is fixed with nut 5 passes through-hole 17 from bottom to top, make second

joint portion

19 and 17 upside periphery wall limit joint mutually of through-hole, and through screw 14 looks fixed connection, also can adopt other fixed modes.

The nut 5 may be a screw hole 2 provided in the mounting member 3.

Preferably, be equipped with the upwards protruding and multistage second die mould 4 that sets up in the looks interval on the diapire 6 of installed part 3, have a certain interval between the adjacent second die mould 4 respectively, nut 5 is located on the diapire 6 between the adjacent second die mould 4, and the both sides wall 7 of installed part 3 supports respectively with second die mould 4 and contradicts.

The second profiling 4 provided above improves the structural reliability of the mounting member 3 by being supported between the two side walls 7 of the mounting member 3 and is easy to implement.

EXAMPLE five

As shown in fig. 3, 4, 5 and 6, the present embodiment is different from the first to fourth embodiments in that the two opposite side walls of the coin box 10 are respectively provided with a third pressing 12 protruding toward the inside of the coin box 10, the third pressing 12 is provided on one side of the access opening 11, the mounting member 3 is clamped and fixed on the other side of the access opening 11, and the mounting member 3 is pushed to slide to the upper side of the third pressing 12 and is supported and abutted against the third pressing 12.

The third profiling 12 provided above improves the reliability of the connection of the mounting member 3 with the coin box 10, and has less influence on the internal structure and appearance of the coin box 10.

Preferably, the mounting member 3 is provided on one side of the third molding 12, and a wall surface 23 connecting two opposite side walls of the coin box 10 and constituting the coin box 10 is provided on the other side, so that the mounting member 3 slides to the upper side of the third molding 12 and then abuts against the wall surface 23.

The third profiling 12 of coin box 10 upper portion left and right sides mainly exists as slide and support function, assembly process: the U-shaped mounting piece 3 is opened upwards, the length direction of the U-shaped mounting piece is parallel to the length direction of the coin box 10, the U-shaped mounting piece 3 enters an access opening 11 of the coin box 10, the U-shaped mounting piece is rotated by 90 degrees (the width and the length direction of the U-shaped mounting piece 3 are completely symmetrical, the U-shaped mounting piece is mainly used for entering the coin box 10, the same function can be realized no matter how the coin box 10 is installed, wrong installation is not needed, only the length and the width direction are emphasized, and the installation is not influenced when the U-shaped mounting piece is rotated by 180 degrees), one end of the top of the side wall 7 of the U-shaped mounting piece 3 is contacted with the third compression molds 12 at two sides and slides in along the third compression molds 12, the back wall of the coin box 10 is utilized for positioning in the width direction, the U-shaped mounting piece 3 is contacted with the wall to finish corresponding installation (in addition, the length direction positioning is realized by the two side walls of the U-shaped mounting piece 3, so that the screws 14 can be accurately inserted into the nuts 5), then the upper cover 1 is covered and the screws 14 are tightened, the opening is the reverse process and will not be further described here.

Specifically, the upper end of 3 both sides walls 7 of installed part is respectively to U type structure opening outside bending type formation first extension 8, and the tip of first extension 8 upwards bending type formation second extension 9, and when installed part 3 was located and is thrown coin box 10 inside, second extension 9 and throw coin box 10 lateral wall looks elastic extrusion, the tip of

second extension

9 and 11 downside periphery wall looks spacing joint of access hole, first extension 8 supports mutually with second die mould 4 and contradicts.

The above arrangement improves the stability of the mounting member 3.

In order to solve the problem that the proper position of the coin box 10 is difficult to find for the operation of screwing 14 because the inside of the coin box 10 is in a cavity state, the invention adds a new U-shaped component and a mounting piece 3 with a nut 5, the mounting piece 3 is completely fixed in the downward direction when the mounting piece is inserted from the front side to the back side of the coin box 10 to abut against the back end surface of the coin box 10 by using third pressing forms 12 at two sides of the coin box 10 as sliding ways, the mounting piece 3 is in a stable state because the coin box 10 is in a horizontal position, and then the upper cover 1 is closed to align the screw 14 with the nut 5 arranged on the mounting piece 3 and screw into the mounting piece 3 until the mounting piece is completely fixed, and the upper cover 1 of the coin box 10 is completely fixed.

EXAMPLE six

As shown in fig. 1, 4, 5 and 6, the present embodiment is different from the first to fifth embodiments in that one side of the upper cover 1 is connected to the coin box 10 via a screw 14, and the other side is rotatably connected to the coin box 10.

The installation mode makes the opening and closing of the upper cover 1 simpler and quicker.

Specifically, two sides of the upper cover 1 are respectively provided with a connecting piece 20 which is located on the lower side of the upper cover 1 and extends from one side connected with a screw 14 of the upper cover 1 to the other side, a gap is formed between the connecting piece 20 and the upper cover 1, one end of the connecting piece is connected with the upper cover 1, the other end of the connecting piece extends to the outside of a space covered by the upper cover 1, an upwards convex clamping protrusion 21 is arranged at the extending end of the connecting piece 20, a gap is formed between the clamping protrusion 21 and the upper cover 1, when the upper cover 1 is closed, the clamping protrusion 21 penetrates through the access hole 11 and is closed along with the rotation of the upper cover 1, the peripheral wall surface on the upper side of the access hole 11 penetrates into the gap between the connecting piece 20 and the upper cover 1 from the gap between the clamping protrusion 21 and the upper cover 1 and is abutted against the upper cover 1, and the end part of the clamping protrusion 21 is abutted against the peripheral wall surface on the lower side of the access hole 11.

Alternatively, both sides of the upper cover 1 may be connected to the coin box 10 via screws 14, respectively.

Preferably, a support frame 22 extending downwards is arranged on the lower side of the upper cover 1, and when the upper cover 1 is closed, the support frame 22 passes through the access opening 11 and is in limited interference with the inner wall surface of the access opening 11.

The radial positioning of the upper cover 1 is further realized by the arrangement, the prying difficulty of the upper cover 1 is increased, and the safety of the coin box 10 is improved.

The connecting member 20 is a part of a supporting frame 22, and the supporting frame 22 and the upper cover 1 are both sheet metal parts and are fixed together by spot welding.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A commercial washing machine is characterized by comprising a coin box (10), wherein an access hole (11) is formed in the coin box (10), an upper cover (1) used for sealing the access hole (11) is arranged at the access hole (11), the upper cover (1) is connected with the coin box (10) through a screw (14), a specially-shaped fifth compression type (24) is arranged on the end face of a nut of the screw (14) and/or the periphery of the nut of the screw (14) is specially shaped, so that a screwdriver can rotate the screw (14) through the fifth compression type (24) and/or the periphery of the nut of the screw (14) to open and close the upper cover (1);

the coin box (10) is internally provided with a detachable mounting piece (3): the mounting piece (3) is of a U-shaped structure and comprises a bottom wall (6) and two side walls (7), a nut (5) for connecting a screw (14) is arranged on the bottom wall (6), after the mounting piece (3) penetrates into the coin box (10) from the access opening (11), an opening of the U-shaped structure is arranged upwards, and the two side walls (7) are respectively elastically extruded with the two side walls arranged opposite to the coin box (10) and are in limit clamping connection with the peripheral wall surface at the lower side of the access opening (11); the upper cover (1) is buckled outside the coin box (10) and is connected with a nut (5) on the bottom wall (6) of the mounting piece (3) through a screw (14);

the two opposite side walls of the coin box (10) are respectively provided with a third pressing die (12) protruding towards the inside of the coin box (10), the third pressing die (12) is arranged on one side of the access opening (11), and the mounting piece (3) is clamped and fixed on the other side of the access opening (11) and pushed to slide to the upper side of the third pressing die (12) and is supported and abutted against the third pressing die (12);

one end of the upper cover (1) is connected with the coin box (10) through a screw, and the other end is rotationally connected with the coin box (10); the two sides of one end of the upper cover (1) which is rotatably connected with the coin box (10) are respectively provided with a connecting piece (20) which is positioned on the lower side of the upper cover (1) and extends from one side of the screw connection of the upper cover (1) to the other side, a gap is arranged between the connecting piece (20) and the upper cover (1), one end of the connecting piece is connected with the upper cover (1), the other end of the connecting piece extends to the outside of the space covered by the upper cover (1), the extending end of the connecting piece (20) is provided with a clamping convex (21) which protrudes upwards, a gap is arranged between the clamping convex (21) and the upper cover (1), when the upper cover (1) is closed, the clamping convex (21) passes through the access hole (11) and is closed along with the rotation of the upper cover (1), the peripheral wall surface on the upper side of the access hole (11) penetrates into the gap between the connecting piece (20) and the upper cover (1) from the gap between the clamping convex (21) and the upper cover (1) and is abutted against the upper cover (1), the end of the clamping convex (21) is abutted against the outer peripheral wall surface at the lower side of the access opening (11).

2. A commercial washing machine according to claim 1, characterized in that the access opening (11) is provided at the upper side of the coin box (10), the outer circumference of the access opening (11) is depressed downward to form a first profiling (13), the upper cover (1) is provided in the first profiling (13) and is correspondingly matched, and the upper surface of the upper cover (1) and the outer circumferential wall surface of the first profiling (13) are provided on the same plane.

3. A commercial washing machine as claimed in claim 1, characterized in that the bottom wall (6) of the mounting member (3) is provided with a plurality of second profiling (4) protruding upwards and arranged at intervals, the adjacent second profiling (4) are respectively provided with a certain distance therebetween, the nut (5) is arranged on the bottom wall (6) between the adjacent second profiling (4), and two side walls (7) of the mounting member (3) are respectively supported and abutted against the second profiling (4).

4. A commercial washing machine according to claim 1, characterized in that the third die (12) is provided with a mounting member (3) at one side thereof and a wall surface (23) connecting two opposite side walls of the coin box (10) and constituting the coin box (10) at the other side thereof, so that the mounting member (3) is slid to the upper side of the third die (12) and then abutted against the wall surface (23).

5. A commercial washing machine according to any one of claims 1-4, characterized in that the upper cover (1) is connected to the coin box (10) at one side via screws (14) and is rotatably connected to the coin box (10) at the other side.

6. A commercial washing machine according to claim 1, characterized in that the underside of the upper lid (1) is provided with a downwardly extending support frame (22), the support frame (22) passing through the access opening (11) and abutting the inner wall surface of the access opening (11) when the upper lid (1) is closed.

7. A commercial washing machine according to claim 6, characterized in that the upper cover (1) is provided with a screw hole (2) for a screw (14) to pass through, the periphery of the screw hole (2) is recessed downwards to form a fourth die (16), after the screw (14) passes through the screw hole (2) and is in threaded connection with the nut (5), the nut of the screw (14) is arranged in the fourth die (16) and is correspondingly matched with the fourth die, and the upper surface of the nut of the screw (14) and the peripheral wall of the fourth die (16) are in smooth transition.