Flat mop head and processing method

Abstract

The invention provides a flat mop head, which comprises an upper plate and a lower plate, the upper plate is made of metal, the lower plate is made of plastic, the upper plate and the lower plate are directly or indirectly molded and fixed, the upper plate comprises a main body and a first fixing part, the first fixing part is inserted into the lower plate or an independently arranged frame, and the main body is made of plastic. And the upper plate and the lower plate are fixed up and down and are prevented from falling off. According to the machining method of the flat mop head, the upper metal plate is obtained through the stamping technology, the lower plate is obtained through the injection molding technology, and the upper plate and the lower plate are stacked and then fixed through the injection molding frame to form the flat mop head. The flat mop head has the advantages that the use strength of the flat mop head is increased in a metal and plastic matching and combining mode, excessive cost is not increased, the first fixing part is fixed to the plastic lower plate or the frame, the upper plate is prevented from falling off, a plastic buffer layer can be formed between the metal upper plate and furniture, and the service life of the flat mop head is prolonged. And damage caused by collision between the upper plate and furniture during mopping is avoided.

Description

Technical Field

[0001] The invention relates to the field of mops, and in particular to a flat mop head and a processing method thereof. Background Art

[0002] The mop head of a flat mop is generally made of hard plastic, and a mop is detachably installed on the bottom of the mop head. The size of the mop is roughly the same as that of the mop head. When mopping the floor, the user applies downward force to the mop rod, and the hard mop head presses the mop against the ground, increasing the contact force between the mop and the ground, thereby cleaning stubborn stains on the ground. The cleaning effect is better than that of traditional cloth mops, and it is deeply loved by consumers. In addition, the flat mop cleans the wiped objects by using a water squeezing device, and there is no need to manually clean the mop.

[0003] Since the existing flat mop head is made of plastic, although the hard plastic material can meet the daily use strength, it is easy to wear and age after long-term use. In order to solve this problem, patent CN202223257086.5 provides an aluminum plate mop head, the main part of which is made of aluminum plate profiles, and connectors, plugs and other components are installed on the aluminum plate profiles to form a complete mop head, and the aluminum plate profiles are used to increase the use strength and durability of the mop head.

[0004] However, the cost of the aluminum plate mop head is relatively high, and the aluminum plate is easy to damage the wall or furniture when colliding with the wall or furniture during mopping. Therefore, the mop head structure needs to be further optimized. Summary of the invention

[0005] An object of the present invention is to provide a flat mop head and a processing method thereof which solve the above-mentioned problems.

[0006] To achieve the above-mentioned object of the invention, the present invention is implemented by the following technical solutions: A flat mop head includes an upper plate and a lower plate, wherein the upper plate is made of metal and the lower plate is made of plastic. The upper plate and the lower plate are directly or indirectly fixed by molding. The upper plate includes a main body and a first fixing portion arranged at the edge of the main body. The first fixing portion is inserted into the lower plate or a separately arranged frame, and is suitable for fixing the upper plate and the lower plate up and down to prevent them from falling off. The combination of metal and plastic in the flat mop head increases the use strength of the flat mop head without increasing too much cost. The metal upper plate located at the top can increase the aesthetics of the flat mop head and the wear resistance when it cooperates with the extrusion device. The first fixing portion at the edge of the upper plate is fixed to the plastic lower plate or the frame. While preventing the upper plate from falling, a plastic buffer layer can be provided between the metal upper plate and the wall or furniture to avoid damage caused by collision between the metal upper plate and the ground or furniture when mopping the floor.

[0007] Preferably, the lower plate is directly molded on the upper plate, a slot is provided at the edge of the lower plate, a first limiting layer and a second limiting layer are respectively provided in the upper and lower directions of the slot, the first fixing part is inserted into the slot for positioning, the first limiting layer and the second limiting layer are respectively supported in the upper and lower directions of the first fixing part, and the bottom of the main body is supported or fitted with the lower plate. The lower plate is molded and fixed to the upper plate, which reduces the installation steps of the upper and lower plates compared to ordinary fixing structures such as clips, screws, rivets, etc. The plastic is hot-melted and then cooled and molded to be fixed to the upper plate. The first fixing part of the upper plate is inserted into the slot to make the fixing structure more stable. At the same time, a plastic buffer layer can be formed on the outside of the metal upper plate after molding to protect the wall or furniture.

[0008] Preferably, the upper plate and the lower plate are stacked up and down, the first fixing portion is in contact with the lower plate, the frame surrounds the outer periphery of the upper plate and the lower plate, the frame is provided with a slot, a first limiting layer is provided above the slot, the first fixing portion and the edge of the lower plate are inserted into the slot, the first limiting layer prevents the upper plate from moving upward, the lower plate is fixed to the slot by hot melt or cooperates with the second limiting layer below the slot to prevent the upper plate and the lower plate from separating from the frame. The method of fixing the upper plate and the lower plate by frame molding can also increase the stability of the fixed structure, reduce the installation steps of the upper and lower plates, and use the frames around the upper and lower plates to form a buffer layer to protect the wall or furniture.

[0009] Preferably, the edge of the upper plate is punched downward to form the first fixing part, so that there is a notch between the main body and the first fixing part, and the first limiting layer enters the notch. The notch can increase the contact area between the upper plate and the frame or the lower plate and the thickness of the first limiting layer, and increase the connection stability between the upper plate and the lower plate; the notch can also be used for the first limiting layer to enter, so that the top surface of the first limiting layer is flush with the top surface of the main body, which increases the aesthetics of the flat mop head. When the flat mop head is used with an extrusion device, the main body and the first limiting layer can be smoothly attached to the water squeezing device, and no jamming will occur due to the thickness difference between the main body and the first limiting layer.

[0010] Preferably, the lower plate is provided with a positioning frame, the main body covers the top of the positioning frame, the notch is sleeved on the outside of the positioning frame, the positioning frame positions the upper plate at a preset position, and prevents the upper plate and the lower plate from shifting in the horizontal direction. When fixing the upper plate and the lower plate by means of a frame, the upper plate and the lower plate need to be processed first, and then the upper plate and the lower plate are combined to form a frame. The positioning frame is arranged in cooperation with the inner side of the notch to prevent the upper plate and the lower plate from being misaligned during the processing of the frame, thereby affecting the fixing effect; at the same time, the positioning frame can also support the position of the notch to prevent the upper plate from being depressed toward the lower plate by force.

[0011] Preferably, a cavity is provided above the lower plate, and a first reinforcement part and a second reinforcement part are provided in the cavity, the first reinforcement part is provided on the inner side surface of the cavity, the second reinforcement part is provided on the bottom surface of the cavity and extends in the width direction of the cavity, and both ends of the second reinforcement part are connected to the inner side surface of the cavity or the first reinforcement part. In order to save costs and reduce the weight of the flat mop head, the upper plate and the lower plate are hollowly provided, and the first reinforcement part and the second reinforcement part are provided to support the upper plate and the lower plate in the upper and lower directions, so as to avoid deformation, collapse or bending of the upper plate and the lower plate during processing and use.

[0012] Preferably, a drainage hole is provided at the end of the lower plate, a drainage channel is provided on the second reinforcement part, and the first reinforcement part is inclined to form a guide part. When the flat mop head is rotated to a position where the drainage hole faces downward, the water above the first reinforcement part can flow downward along the inclined surface of the first reinforcement part, and the water blocked by the second reinforcement part can flow to the drainage hole through the drainage channel for discharge. Although the upper plate and the lower plate are fixed by molding to reduce the installation gap between the two, in order to prevent the flat mop head from being unable to be discharged due to the ingress of water into the flat mop head, the drainage channel and the first reinforcement part are inclined. When the flat mop head is placed vertically, the water above flows through the drainage channel to the drainage hole for discharge, and no water will accumulate in the gap between the first reinforcement parts.

[0013] Preferably, a first mounting hole is connected to the middle of the upper plate and the middle of the lower plate, a hinge seat is fixedly mounted on the first mounting hole, and the hinge seat is rotatably connected to the mop rod through a hinge, and a second mounting hole is also provided on the upper plate, and the bottom of the hinge seat passes through the second mounting hole to form a support with the lower plate, and the edges of the first mounting hole and the second mounting hole on the upper plate are provided with an extension section, and the extension section is supported on the outer side of the bottom of the hinge seat. Since the thickness of the upper plate is relatively thin, and the first mounting hole and the second mounting hole are processed by punching, the edges of the first mounting hole and the second mounting hole are prone to form a cutting edge, which may cut the worker or the hinge seat, and the setting of the extension section processes the direction of the cutting edge to face the inside of the flat mop head, and when assembling the hinge seat, the worker cannot touch the cutting edge, and the installation direction of the hinge seat is the same as the direction of the extension section, and the cutting edge will not touch the hinge seat, and at the same time, multiple extension sections are attached to or supported on the outer side of the lower end of the hinge seat to avoid shaking between the hinge seat and the flat mop head.

[0014] Preferably, a fixing groove is provided at the top of the frame in the length direction, a scraping strip for scraping and cleaning the floor is provided on the fixing groove, a positioning protrusion is provided on the hinge, a clearance groove is provided on the hinge seat, the mop rod rotates in the direction away from the scraping strip, the positioning protrusion enters the clearance groove and abuts against the surface of the hinge seat or the clearance groove for support, preventing the flat-plate mop head from rotating relative to the mop rod due to gravity, and the flat-plate mop head is turned over. The positioning protrusion keeps the mop rod and the flat-plate mop head in the scraping and cleaning position, and the scraping strip can scrape the floor. The setting of the scraper bar enables the flat mop head to have the functions of scrubbing and scraping water. The scraper bar can only be fixed on the ordinary metal mop head by gluing. The flat mop head is often in contact with water when mopping or cleaning, and the scraper bar is easy to fall off. The setting of the frame can not only fix the upper plate and the lower plate and form a buffer layer, but also be used for hot-melt molding to fix the scraper bar, so that the installation of the scraper bar is more stable and will not fall off due to soaking in water; the setting of the positioning protrusion and the clearance groove can position the mop head and the mop rod away from the scraper bar. In the process of flipping the flat mop head, the flat mop head will not be rotated relative to the mop rod due to gravity, and the flat mop head can be smoothly flipped to the direction where the scraper bar is facing downward.

[0015] Preferably, the upper plate is further provided with a third mounting hole, the lower plate is further provided with a fourth mounting hole matched with the third mounting hole, and a liquid adding cover is installed in the third mounting hole and the fourth mounting hole, the liquid adding cover comprises an upper cover and a lower cover, the upper cover and the lower cover are enclosed to form a liquid storage cavity, the upper cover is provided with a liquid adding hole, the lower cover is provided with a liquid outlet hole, the liquid in the liquid storage cavity flows to the wiping object below the lower plate through the liquid outlet hole, an extension section is provided at the edge of the third mounting hole, a support platform extending into the third mounting hole is provided at the bottom of the extension section, a first buckle is provided at the bottom of the upper cover, a first step and a second step located at different heights are provided at the edge of the fourth mounting hole, the upper cover enters the third mounting hole and is supported above the support platform, the first buckle enters the fourth mounting hole and is clamped and fixed with the first step, a second buckle and a stopper are provided at the upper end of the lower cover, the second buckle is clamped and fixed with the second step, the stopper enters the liquid storage cavity and is supported on the inner side of the first buckle to prevent the first buckle from detaching from the first step. The liquid filling cover is provided so that cleaning liquid can be injected into the liquid filling cover from the upper part, and the cleaning liquid penetrates into the wiping objects through the flat mop head to clean the wiping objects.

[0016] A method for processing a flat mop head comprises the following steps: Upper plate processing: punching a first mounting hole and a second mounting hole on the sub-plate of the upper plate, flanging the sub-plate of the upper plate, the first mounting hole and the second mounting hole form an extended section, the outer edge of the upper plate forms a notch, and the side and bottom of the notch form a connecting wall and a first fixing portion respectively; Lower plate processing: The lower plate is obtained by hot-melt injection molding of a preset mold, and the lower plate is integrally formed with a positioning frame and a cavity, and the positioning frame cooperates with the connecting wall to align and position the upper plate and the lower plate; Frame processing: the upper plate and the lower plate are positioned by the positioning frame and the connecting wall, the upper plate and the lower plate stacked up and down are placed in a preset mold, and the hot-melt material is filled to the outer edge of the upper plate and the lower plate to form a frame, the frame is provided with a slot and a first limiting layer, the first fixing part is inserted into the slot, and the first limiting layer is attached to the top of the upper plate to prevent the upper plate from detaching from the lower plate upwards, and the upper plate and the lower plate are fixed by the frame processing to form a flat mop head; Accessory installation: Install the hinge and mop rod on the flat mop head to form a complete flat mop.

[0017] The advantages of the present invention are: The combination of metal and plastic in the flat mop head increases the use strength of the flat mop head without increasing too much cost. The metal upper plate located on the top can increase the aesthetics of the flat mop head and the wear resistance when cooperating with the extrusion device. The first fixing part of the upper plate edge is fixed to the plastic lower plate or the frame. While preventing the upper plate from falling, a plastic buffer layer can be provided between the metal upper plate and the wall or furniture to avoid damage caused by collision between the metal upper plate and the ground or furniture when mopping the floor.

[0018] The method of fixing the lower plate to the upper plate by molding or fixing the upper and lower plates by using a frame molding can reduce the installation steps of the upper and lower plates compared to ordinary fixing structures, such as clips, screws, rivets, etc. The method of fixing the plastic by hot melting and then cooling the molding, and the first fixing part of the upper plate is inserted into the slot to make the fixing structure more stable, which can reduce the installation gap between the upper plate, the lower plate or the frame.

[0019] The provision of the notch portion can increase the contact area between the upper plate and the frame or the lower plate and the thickness of the first limiting layer, thereby increasing the connection stability between the upper plate and the lower plate; the notch portion can also allow the first limiting layer to enter, so that the top surface of the first limiting layer is flush with the top surface of the main body, thereby increasing the aesthetics of the flat-plate mop head. When the flat-plate mop head is used in conjunction with the extrusion device, the main body and the first limiting layer can be smoothly attached to the water squeezing device, and no jamming will occur due to the thickness difference between the main body and the first limiting layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is an overall schematic diagram of the flat mop head of the present invention.

[0021] Figure 2 It is an exploded schematic diagram of the flat mop head of the present invention.

[0022] Figure 3 It is a schematic diagram of a top view of the upper plate of the present invention.

[0023] Figure 4 It is an overall schematic diagram of the lower plate of the present invention.

[0024] Figure 5 It is a cross-sectional schematic diagram of the flat mop head of the present invention in an exploded state.

[0025] Figure 6 It is a schematic diagram of the placement state of the upper plate and the lower plate of the present invention when processing the frame.

[0026] Figure 7 It is a cross-sectional schematic diagram of the flat mop head of the present invention at the position of the second mounting hole.

[0027] Figure 8 It is a cross-sectional schematic diagram of the mop rod and the flat mop head of the present invention in a vertical state.

[0028] Fig. 9 It is a cross-sectional schematic diagram of the mop rod and the flat mop head of the present invention in a relatively inclined state.

[0029] Fig.10 It is a schematic diagram of the flat mop head of the present invention being turned over to the water scraping state.

[0030] Fig.11 It is a cross-sectional schematic diagram of the flat mop head of the present invention at the position of the liquid filling cover.

[0031] Fig.12 It is a cross-sectional view of the flat mop head and the liquid filling cap of the present invention in an exploded state.

[0032] Fig.13 It is a schematic diagram of the second side panel of the present invention being fixed by a switch.

[0033] Fig.14 It is a schematic diagram of the second side plate of the present invention being separated from the switch and rotating.

[0034] Fig.15 It is a cross-sectional schematic diagram of the hinge seat, the hinge member and the mop rod of the present invention installed in a preset direction and position.

[0035] Fig.16 The present invention Fig.15 A magnified schematic diagram of center A.

[0036] Fig.17It is a cross-sectional schematic diagram of the hinge seat, the hinge member and the mop rod of the present invention when they are not installed in the preset direction and position.

[0037] Fig.18 The present invention Fig.17 Schematic diagram of the cross section at point B.

[0038] Fig.19 Schematic diagram of an explosion of a flat mop head in Embodiment 2 of the present invention.

[0039] Fig. 20 It is a cross-sectional schematic diagram of the flat mop head in embodiment 3 of the present invention.

[0040] Fig.21 It is a cross-sectional schematic diagram of the upper plate which is a flat plate and is fixed to the first sub-plate in embodiment 3 of the present invention.

[0041] Fig. 22 It is a cross-sectional schematic diagram of the upper plate provided with a notch and the first sub-plate being fixed in the third embodiment of the present invention. DETAILED DESCRIPTION

[0042] The following describes the embodiments of the present invention in detail in conjunction with the accompanying drawings, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0043] Certain words are used in the present invention to refer to specific components. Those skilled in the art should understand that this specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as the criterion for distinction. It should be noted that, unless otherwise specified, when a component is described as "provided with" or "provided on" or "provided on" another component, it can mean that it is directly provided with or directly provided on another component or there can also be a central component, and it can be an integral structure or a split structure. When a component is described as "connected to" another component, it can be directly connected or connected through a central component, and it can be an integral connection or a split connection or there can be a contact and matching relationship. When a component is described as "provided on another component", it does not mean that the component must be located above or on the upper part of another component, but can also be located in other positions. The terms "upper", "lower", "left", "right", "high", "low" and similar expressions used herein are based on the normal placement state of the product, and are only for the purpose of convenience of explanation. The term "multiple" used herein refers to two or more numbers. The terms "vertical", "horizontal" and the like as used herein refer to a substantially vertical or substantially horizontal state within a reasonable error range and do not necessarily have to be very precise.

[0044] like Figure 1-22A flat mop head includes an upper plate 2 and a lower plate 3. The upper plate 2 is made of metal and the lower plate 3 is made of plastic. The upper plate 2 and the lower plate 3 are directly or indirectly molded and fixed. The upper plate 2 includes a main body 4 and a first fixing portion 5 arranged on the edge of the main body 4. The first fixing portion 5 is inserted into the lower plate 3 or a separately arranged frame 6, which is suitable for fixing the upper plate 2 and the lower plate 3 up and down to prevent them from falling off.

[0045] In the present invention, the flat mop head 1 is set to be rectangular, the top of the flat mop head 1 is connected to the mop rod 7, and the bottom is detachably installed with a wiping object, and the size of the wiping object is adapted to the size of the flat mop head 1. During the mopping process, the force applied by the user to the mop rod 7 is transmitted to the flat mop head 1, so that the flat mop head 1 as a whole presses the wiping object, increases the wiping force between the wiping object and the ground, and thus improves the mopping cleaning effect.

[0046] Preferably, the upper plate 2 is configured to be sheet-shaped and made of stainless steel, iron, aluminum or other alloy materials. The upper plate 2 and the lower plate 3 are both configured to be rectangular. The overall edge of the upper plate 2 is surrounded by the lower plate 3 or the frame 6. When the flat mop head 1 is mopping the floor, when any edge collides with a wall or furniture, the lower plate 3 or the frame 6 forms a buffer layer to prevent the metal upper plate 2 from directly colliding with the wall or furniture, causing scratches on the wall or furniture. Example 1

[0047] In this embodiment, the upper plate 2 and the lower plate 3 are formed and fixed by the frame 6. Specifically, the upper plate 2 and the lower plate 3 are processed separately first, and the upper plate 2 and the lower plate 3 are stacked up and down, so that the first fixing portion 5 fits with the lower plate 3, and the frame 6 surrounds the outer periphery of the upper plate 2 and the lower plate 3. The frame 6 is provided with a slot 8, and a first limiting layer 9 is provided above the slot 8. The edges of the first fixing portion 5 and the lower plate 3 are inserted into the slot 8. The first limiting layer 9 prevents the upper plate 2 from moving upward, and the lower plate 3 is fixed to the slot 8 by hot melt or cooperates with the second limiting layer 10 below the slot 8 to prevent the upper plate 2 and the lower plate 3 from separating from the frame 6.

[0048] Furthermore, the upper plate 2 is made of stainless steel, and the thickness of the stainless steel is 0.4MM-1MM. A stainless steel sheet of a preset size is punched out on the stainless steel plate by a stamping die, and the stainless steel sheet forms the prototype of the upper plate 2. Compared with other metal materials, the stainless steel material has a unique luster and texture, which can increase the beauty of the flat mop head 1, and stainless steel has the advantages of not easy to rust, not easy to deform, and good toughness. When used as a flat mop head 1, it can increase the strength and service life of the flat mop head 1. The lower plate 3 is made of PP material, which is polypropylene (Polypropylene) material, and has the advantage of low density. When used as a flat mop head 1, it can reduce the weight of the flat mop head 1 and is lighter when mopping the floor. The stainless steel upper plate 2 and the PP lower plate 3 are used in combination. Compared with the traditional single PP plastic or ABS plastic, the stainless steel upper plate 2 increases the use strength and non-deformation performance of the flat mop head 1. Compared with other structures that use metal to make the flat mop head 1 body, the cost is lower and the weight of the flat mop head 1 is lighter.

[0049] The frame 6 can be made of the same PP material as the lower plate 3 or a different ABS plastic material. During the injection molding of the frame 6, the liquid temperature of the hot-melting plastic material causes the surface of the lower plate 3 to be partially heated and melted and bonded to the frame 6 after solidification. Of course, when the hot-melting temperature of the material of the frame 6 cannot partially melt the material of the lower plate 3, a second limiting layer 10 can be provided below the frame 6 to support the lower plate 3 from below, and the first limiting layer 9 and the second limiting layer 10 are used to fix the upper plate 2 and the lower plate 3 in the up and down directions.

[0050] The lower plate 3 can be in the form of a single plate or a plurality of plates, and their functions are to form the flat mop head 1. In this embodiment, the lower plate 3 is composed of a single plate. Specifically, in order to increase the thickness of the flat mop head 1 and prevent the flat mop head 1 from deforming, the thickness of the lower plate 3 is greater than the thickness of the main body 4. At the same time, in order to reduce the weight of the lower plate 3, a cavity 11 is formed between the upper end of the lower plate 3 and the upper plate 2. The bottom surface of the lower plate 3 is a plane as a whole, and a mop, towel, rag and other wiping objects can be detachably installed.

[0051] Based on the cavity 11 structure of the lower plate 3, the edge of the upper plate 2 is stamped downward to form a first fixing portion 5, so that there is a notch portion 12 between the main body 4 and the first fixing portion 5, and the first limiting layer 9 enters the notch portion 12. The main body 4 and the first fixing portion 5 are basically parallel. The vertical connecting wall 13 of the notch portion 12 between the main body 4 and the first fixing portion 5 can increase the thickness of the upper plate 2, and adjust the sheet-like upper plate 2 to a cover-like body with a lower flange, which increases the difficulty of twisting and deformation of the upper plate 2, thereby improving the use strength of the upper plate 2; the notch portion 12 can also increase the contact area between the upper plate 2 and the frame 6, and increase the connection stability between the upper plate 2 and the lower plate 3; the notch portion 12 can also be entered by the first limiting layer 9, so that the top surface of the first limiting layer 9 is flush with the top surface of the main body 4, thereby increasing the aesthetics of the flat mop head 1. When the flat mop head 1 is used with an extrusion device, the main body 4 and the first limiting layer 9 can be smoothly attached to the water squeezing device, and no jamming will occur due to the thickness difference between the main body 4 and the first limiting layer 9. In this embodiment, the width of the first fixing portion 5 is 1.5 MM-2 MM.

[0052] In the process of processing the frame 6 to fix the upper plate 2 and the lower plate 3, the processed upper plate 2 and the lower plate 3 need to be stacked and matched to a preset position, such as Figure 6 state, and then put the upper plate 2 and the lower plate 3 into the mold to form the frame 6. In order to facilitate the positioning of the upper plate 2 and the lower plate 3 and prevent the two from lateral deviation, the lower plate 3 is provided with a positioning frame 14, the main body 4 covers the top of the positioning frame 14, and the notch portion 12 is fixedly sleeved on the outside of the positioning frame 14. The positioning frame 14 positions the upper plate 2 at a preset position, and the upper plate 2 and the lower plate 3 are supported by each other both vertically and horizontally through the partial cross-matching between the upper plate 2 and the lower plate 3.

[0053] Furthermore, a first reinforcement portion 15 and a second reinforcement portion 16 are provided in the cavity 11. The first reinforcement portion 15 is provided on the inner side surface of the cavity 11, and the second reinforcement portion 16 is provided on the bottom surface of the cavity 11 and extends in the width direction of the cavity 11. Both ends of the second reinforcement portion 16 are connected to the inner side surface of the cavity 11 or the first reinforcement portion 15.

[0054] like Figure 4 In this embodiment, the first reinforcement part 15 and the second reinforcement part 16 are both configured as reinforcement ribs, and the cavity 11 is filled with the reinforcement ribs at intervals. The upper plate 2 and the lower plate 3 on the upper and lower sides of the cavity 11 are supported by the reinforcement ribs to prevent the upper plate 2 and the lower plate 3 from sinking or deforming into the cavity 11. In other embodiments, the first reinforcement part 15 and the second reinforcement part 16 may also adopt structures such as support blocks and support columns, or may be formed by adding sponge, cotton cloth, pearl cotton and other materials into the cavity 11 to fill the cavity 11.

[0055] This embodiment is specifically described in the form of reinforcing ribs. Since the flat mop head 1 is set to be rectangular, the first reinforcing portion 15 is set on one side of the long side of the flat mop head 1, and the lateral and bottom sides of the first reinforcing portion 15 are respectively fixed to the inner side and bottom sides of the cavity 11 to simultaneously support the inner side and bottom sides of the cavity 11. The second reinforcing portion 16 is set on the bottom side of the cavity 11 and extends in the width direction of the lower plate 3. After the flat mop head 1 is installed, the first reinforcing portion 15 and the second reinforcing portion 16 are jointly supported below the upper plate 2. Of course, in order to further prevent the flat mop head 1 from forming, a third reinforcing portion 17 can also be set on the lower plate 3. The third reinforcing portion 17 is set on the bottom side of the cavity 11 and extends in the length direction of the lower plate 3, and cross-coordinates with the second reinforcing portion 16, and three groups of reinforcing portions are used to jointly support the flat mop head 1.

[0056] In this embodiment, the feed port of the lower plate 3 processed during injection molding is located in the length direction of the lower plate 3, and the feed port of the frame 6 during injection molding is also located in the length direction of the flat mop head 1. The impact force of the feed during the frame 6 processing will be transmitted to the side wall of the lower plate 3, causing the side wall of the lower plate 3 to tilt or bend into the cavity 11. The first reinforcement part 15 can support the side wall of the lower plate 3 at a position opposite to the feeding direction of the frame 6 to reduce the impact of the feed impact on the side wall, so that the first reinforcement part 15 has the function of supporting both the upper plate 2 and the side wall. Of course, on the basis of setting the second reinforcement part 16 and the third reinforcement part 17 in the cavity 11, the height of the first reinforcement part 15 can also be reduced so that the first reinforcement part 15 only has the function of supporting the side wall.

[0057] Preferably, the feed opening of the frame 6 is located in the length direction of the lower plate 3 to prevent the feed from impacting the upper plate 2 .

[0058] A first mounting hole 18 is provided in the middle of the upper plate 2 and the middle of the lower plate 3. A hinge seat 19 is fixedly installed on the first mounting hole 18. The hinge seat 19 is rotatably connected to the mop rod 7 through a hinge 20. The hinge seat 19 is made of plastic material and is in the shape of a long strip. Two first plug rods 21 are provided at both ends of the length direction of the hinge seat 19. The first plug rod 21 enters the first mounting hole 18. A screw, a rivet or a tenon is inserted from below into the first mounting hole 18 and fixedly connected to the first plug rod 21. In order to avoid the installation gap between the hinge seat 19 and the flat mop head 1, The first mounting hole 18 on the upper plate 2 is punched to form an extension section 22 after punching, so that the edge of the first mounting hole 18 is hidden in the cavity 11 and is parallel to the first mounting rod 21. The extension section 22 is sleeved on the outside of the first mounting rod 21 and fits with the first mounting rod 21. The extension section 22 supports the first mounting rod 21 by increasing the contact area with the first mounting rod 21, thereby reducing shaking and further preventing the first mounting rod 21 from being damaged by the edge.

[0059] In addition to the extension section 22, other methods can be used to achieve a stable connection between the hinge seat 19 and the flat mop head 1. The hinge seat 19 is also provided with a second plug rod 23 between the two first plug rods 21, and the upper plate 2 is also provided with a second mounting hole 24. The bottom of the hinge seat 19 passes through the second mounting hole 24 to form a support with the lower plate 3, and the size of the second plug rod 23 is larger than the size of the two first plug rods 21. The multi-point support method makes the installation of the hinge seat 19 more stable. Similarly, the edge of the second mounting hole 24 is also provided with an extension section 22 that is the same as the first mounting hole 18 to protect the second plug rod 23 from damage and to provide a close support for the second plug rod 23.

[0060] In order to increase the cleaning function of the flat mop head 1, in this embodiment, a scraper bar 25 is provided on the frame 6, so that the flat mop head 1 has both the functions of scrubbing and scraping water. The scraper bar 25 can only be fixed on the ordinary metal mop head by gluing. The flat mop head 1 is often in contact with water when mopping or cleaning, and the scraper bar 25 is easy to fall off. The setting of the frame 6, in addition to fixing the upper plate 2 and the lower plate 3 and forming a buffer layer, can also be used for hot-melt molding to fix the scraper bar 25, so that the installation of the scraper bar 25 is more stable and will not fall off due to soaking in water. Specifically, a fixing groove 26 is provided at the top of the frame 6 in the longitudinal direction, and a scraper bar 25 for scraping water and cleaning the ground is provided on the fixing groove 26. The scraper bar 25 is made of TPR material (thermoplastic rubber material). Figure 8-10 The hinge 20 is provided with a positioning protrusion 27, and the hinge seat 19 is provided with a clearance groove 28. The mop rod 7 rotates in the direction away from the scraper bar 25, and the positioning protrusion 27 enters the clearance groove 28 and supports against the surface of the hinge seat 19 or the clearance groove 28, preventing the flat-plate mop head 1 from rotating relative to the mop rod 7 due to gravity. The flat-plate mop head 1 is turned over, and the positioning protrusion 27 keeps the mop rod 7 and the flat-plate mop head 1 in the position of scraping and cleaning, and the scraper bar 25 can scrape the ground. The arrangement of the positioning protrusion 27 and the clearance groove 28 can position the mop head and the mop rod 7 at a position away from the scraper bar 25. In the process of turning over the flat-plate mop head 1, the flat-plate mop head 1 will not rotate relative to the mop rod 7 due to gravity, and the flat-plate mop head 1 can be smoothly turned over to the direction where the scraper bar 25 is facing downward. In this embodiment, the upper and lower depths of the connecting wall 13 are approximately 3MM, and the depth of the make way groove 28 is 1MM-2MM, so as to stably install the scraper strip 25. If the depth of the connecting wall 13 is too small, the thickness and depth of the frame 6 between the make way groove 28 and the notch 12 are too small, and the frame 6 at this position is prone to deformation or damage.

[0061] Preferably, the upper plate 2 is further provided with a third mounting hole 29, and the lower plate 3 is further provided with a fourth mounting hole 30 that matches the third mounting hole 29. A liquid adding cover 31 is installed in the third mounting hole 29 and the fourth mounting hole 30. The liquid adding cover 31 includes an upper cover 32 and a lower cover 33. The upper cover 32 and the lower cover 33 enclose a liquid storage cavity 34. The upper cover 32 is provided with a liquid adding hole 35, and the lower cover 33 is provided with a liquid outlet hole 36. The liquid in the liquid storage cavity 34 flows to the wipe below the lower plate 3 through the liquid outlet hole 36. The edge of the third mounting hole 29 is provided with an extension section 22, and the bottom of the extension section 22 is provided with a The upper cover 32 is provided with a first buckle 38 at the bottom, and the edge of the fourth mounting hole 30 is provided with a first step 39 and a second step 40 at different heights. The upper cover 32 enters the third mounting hole 29 and is supported above the support platform 37. The first buckle 38 enters the fourth mounting hole 30 and is fixedly engaged with the first step 39. The upper end of the lower cover 33 is provided with a second buckle 41 and a stopper 42. The second buckle 41 is fixedly engaged with the second step 40. The stopper 42 enters the liquid storage cavity 34 and is supported on the inner side of the first buckle 38 to prevent the first buckle 38 from being separated from the first step 39. The liquid filling cover 31 is provided so that cleaning liquid can be injected into the liquid filling cover 31 from the top, and the cleaning liquid penetrates into the wiping object through the flat mop head 1 to clean the wiping object.

[0062] In the above embodiment, the wipe is detachably mounted on the bottom surface of the lower plate 3 by Velcro, and a side panel is also mounted on one or both ends of the lower plate 3, on which an insert 45 is provided, and the insert pocket at the end of the wipe can be inserted into the insert 45 and fixed, so as to prevent the edge of the wipe from being torn and separated from the lower plate 3.

[0063] Specifically, grooves 46 are provided at both ends of the lower plate 3 in the length direction, and the first side plate 43 and the second side plate 44 are provided on the two grooves 46. Inserts 45 are provided on the first side plate 43 and the second side plate 44. Insert pockets are provided at both ends of the wipe, and the wipe is tightened and fixed by the inserts 45 and the insert pockets at both ends. The outer ends of the first side plate 43 and the second side plate 44 are flush with the frame 6 or overlap with at least part of the frame 6 up and down.

[0064] Preferably, the first side plate 43 is fixedly connected to the lower plate 3 by a buckle, the second side plate 44 is rotatably connected to the lower plate 3, and a switch 47 is further provided between the flat mop head 1 and the second side plate 44, a fifth mounting hole 48 is provided on the upper plate 2 and the lower plate 3, the switch 47 passes through the fifth mounting hole 48 up and down, a hook 49 is provided at the lower end of the switch 47, a positioning hole 50 is provided on the second side plate 44, the hook 49 can enter the positioning hole 50 and cooperate with the second side plate 44 to realize the rotation locking of the second side plate 44, when the switch 47 locks the second side plate 44, the two ends of the wiping object are tightened and fixed by the two side plates; the switch 47 moves the position to separate the hook 49 from the second side plate 44, the second side plate 44 can rotate downward to adjust the distance between the insert 45 on the first side plate 43 and the second side plate 44, so that the wiping object at the position of the second side plate 44 can be separated from the insert 45, thereby removing the wiping object.

[0065] In this embodiment, a positioning mechanism 51 is provided between the mop rod 7 and the hinge 20 to position the flat mop head 1 in parallel with the mop rod 7, so that the flat mop head 1 cooperates with the water squeezing device for cleaning and squeezing. Since the flat mop head 1 is provided with a switch 47, and the switch 47 is exposed on the surface of the upper plate 2, in order to ensure that the flat mop head 1 and the mop rod 7 of each flat mop are rotated to be parallel, the position of the switch 47 relative to the mop rod 7 is the same, a first foolproof mechanism 52 is further provided between the hinge seat 19 and the lower plate 3, and the first foolproof mechanism 52 is used to limit the installation direction between the hinge seat 19 and the flat mop head 1, and a second foolproof mechanism 53 is provided between the hinge seat 19 and the hinge 20, and the second foolproof mechanism 53 is used to limit the installation direction between the hinge 20 and the hinge 20. The two sets of foolproof mechanisms cooperate together to enable the mop rod 7 to only rotate to the side away from the switch 47 to be parallel to the flat mop head 1 or only rotate to the side close to the switch 47 to be parallel to the flat mop head 1.

[0066] Specifically, Figure 15-16 , the mop rod 7 is rotated to the side away from the switch 47 and parallel to the flat mop head 1. The first foolproof mechanism 52 includes a first boss 54 and a second boss 55. The first boss 54 and the second boss 55 are respectively arranged on the bottom of the second plug rod 23 and the lower plate 3. Figure 17-18When the hinge seat 19 and the flat mop head 1 are not installed in the preset direction, the second insertion rod 23 is aligned with the second mounting hole 24, and the first boss 54 and the second boss 55 are butted against each other, so that there is a visible gap between the hinge seat 19 and the upper plate 2; when the hinge seat 19 is installed along the preset direction, the first boss 54 and the second boss 55 are misaligned, the second insertion rod 23 enters the second mounting hole 24 as a whole, and the upper end of the hinge seat 19 fits against the upper plate 2. The second foolproof mechanism 53 includes a third boss 56. The two ends of the hinge 20 are respectively provided with a first rotating shaft 57 and a second rotating shaft 58. The first rotating shaft 57 and the second rotating shaft 58 are both inserted into the hinge seat 19 for rotational connection. The length of the first rotating shaft 57 is less than the length of the second rotating shaft 58. When the hinge 20 is not installed in the preset direction, the second rotating shaft 58 is long and easily hits the third boss 56 on the hinge seat 19, and the first rotating shaft 57 at the other end cannot enter the hinge seat 19. When the hinge 20 is installed in the preset direction, the third boss 56 will not hinder the installation of the hinge 20 due to the short length of the first rotating shaft 57. The first foolproof mechanism 52 and the second foolproof mechanism 53 cooperate to limit the rotatable direction of the mop rod 7 and the mop head. Of course, if the rotatable direction of the mop rod 7 and the flat mop head 1 is limited to the side close to the switch 47, it is only necessary to adjust the direction and position of the first foolproof mechanism 52 and the second foolproof mechanism 53. This embodiment will not be repeated.

[0067] Preferably, in order to further prevent the articulated seat 19 and the flat mop head 1 from being installed incorrectly, the articulated seat 19 and the flat mop head 1 are directly provided with a third foolproof mechanism 59. The third foolproof mechanism 59 adjusts the distance between the two first mounting holes 18 and the second mounting holes 24 so that the distance between the two first mounting holes 18 and the second mounting holes 24 has a length difference. When the articulated seat 19 is not installed in the preset direction, the two first plug rods 21 and the second plug rod 23 cannot be inserted into the first mounting hole 18 and the second mounting hole 24 at the same time; the two first plug rods 21 and the second plug rod 23 can only be inserted into the first mounting hole 18 and the second mounting hole 24 at the same time when the articulated seat 19 is installed in the preset direction. It should be noted that the first foolproof mechanism 52 and the third foolproof mechanism 59 can be provided at the same time and play a foolproof role at the same time, or any one of the first foolproof mechanism 52 and the third foolproof mechanism 59 can be selected to cooperate with the second foolproof mechanism 53.

[0068] Furthermore, after the hinge seat 19 and the hinge member 20 are installed on the flat mop head 1 in a preset direction, the protrusion on the hinge member 20 is located at a side away from the scraper strip 25 .

[0069] Although the upper plate 2, the lower plate 3 and the frame 6 are fixedly connected by multiple molding, and the installation gap between the upper plate 2, the lower plate 3 and the frame 6 is reduced compared to the connection structure such as the snap, it is impossible to prevent water from entering the cavity 11 from the installation gap or other parts. In order to facilitate the drainage of the cavity 11, a drainage hole 60 is provided at the end of the lower plate 3, and a drainage channel 61 is provided on any second reinforcement part 16. When the flat mop head 1 is rotated to a position where the drainage hole is facing downward, the water blocked by the second reinforcement part 16 can flow to the drainage hole 60 through the drainage channel 61 for discharge. The first reinforcement part 15 is inclined to form a guide part. The water blocked by the first reinforcement part 15 can flow downward along the inclined surface of the first reinforcement part 15 and flow out from the drainage port through the drainage channel 61.

[0070] The following describes the processing method of the flat mop head 1 of this embodiment: Material processing of the upper plate 2: The metal sheet is punched through a preset first mold to obtain a sub-sheet of the upper plate 2 prototype with preset dimensions. The sub-sheet is in the shape of a rectangle, and the corners of the sub-sheet are directly rounded by stamping. The first mounting hole 18, the second mounting hole 24, the third mounting hole 29 and the fifth mounting hole 48 in the sub-sheet are also directly formed by stamping.

[0071] Flanging processing of the upper plate 2: the taken out sub-plate is placed with the protective film facing upward, and the outer edge of the upper plate 2, the edges of the first mounting hole 18, the second mounting hole 24 and the third mounting hole 29 are flanging processed through the preset second mold stamping. The outer edge of the upper plate 2 is formed into a notch portion 12 by flanging stamping, and below the notch portion 12 is the transversely extending first fixing portion 5. The first fixing portion 5 is vertically connected to the main body 4 through the connecting wall 13. The flanging obtained by stamping the edges of the first mounting hole 18, the second mounting hole 24 and the third mounting hole 29 forms an extension section 22, and the processing of the upper plate 2 is completed.

[0072] Injection molding of the lower plate 3: The lower plate 3 is obtained by hot melt injection molding of a preset third mold, and the positioning frame 14, cavity 11, first reinforcement part 15, second reinforcement part 16, third reinforcement part 17, drainage channel 61 and drainage hole 60 on the lower plate 3 are directly formed in the injection molding stage.

[0073] The upper plate 2 and the lower plate 3 in the present embodiment can be processed by different machines at the same time, or they can be processed one after another respectively. In the present embodiment, there is no limitation on the order of processing the upper plate 2 and the lower plate 3, and it is only necessary that the upper plate 2 and the lower plate 3 can cooperate to enter the subsequent processing steps at the same time.

[0074] Injection molding of the frame 6: stack the processed upper plate 2 and lower plate 3 up and down according to the preset position, that is, the position where the two fifth mounting holes 48 are aligned. After stacking, the upper plate 2 and lower plate 3 are rotated to the vertical direction and placed in the fourth mold. The upper plate 2 and lower plate 3 are positioned between the upper plate 2 and lower plate 3 or by the fourth mold to prevent the upper plate 2 and lower plate 3 from separating. The frame 6 is processed by the preset feed port at the long side position of the lower plate 3. The hot-melt liquid material of the frame 6 fills the notch 12 of the upper plate 2, and the frame 6 is entirely enclosed in the outer periphery of the upper plate 2 and lower plate 3. The hot-melt material of the frame 6 causes the outer edge of the lower plate 3 to melt due to heat. After the feed is cooled, the inner side of the frame 6 solidifies and adheres to the melted part of the lower plate 3. The first fixing part 5 is inserted into the slot 8. The upper plate 2 is limited in the horizontal direction by the frame 6 surrounding the outside, and in the vertical direction by the first limiting layer 9 and the lower plate 3 and the frame 6 fixed by adhesion below. The upper plate 2 and the lower plate 3 fixed by the frame 6 form a flat mop head 1.

[0075] Processing of the scraping strip 25: The obtained flat mop head 1 is placed in a fifth mold, and the scraping strip 25 is formed and fixed on the fixing groove 26 preset in the frame 6.

[0076] Accessory installation: The hinge seat 19 is fixedly installed at the first installation hole 18 and the second installation hole 24, the hinge 20 is rotatably installed on the hinge seat 19, the mop rod 7 is rotatably connected to the hinge 20, the liquid filling cover 31 is installed in the third installation hole 29 and the fourth installation hole 30, the first side plate 43, the second side plate 44 and the switch 47 are installed on the flat mop head 1, and the Velcro is installed on the bottom surface of the lower plate 3, and the installation of the flat mop is completed. In this embodiment, except for the upper plate 2, the lower plate 3, the frame 6 and the scraper 25, the installation order of the remaining accessories is not limited.

[0077] It should be noted that in the above steps, if the liquid adding cover 31 structure is removed from the flat mop head 1 , there is no need to set processing steps corresponding to the liquid adding cover 31 for the upper plate 2 and the lower plate 3 . Example 2

[0078] This embodiment only describes the differences from Embodiment 1. The difference between this embodiment and Embodiment 1 is that the upper plate 2 is fixed by molding the lower plate 3, and the frame 6 is no longer provided.

[0079] Specifically, Figure 19-20 The upper plate 2 is obtained by the structure and processing method in Example 1, and a slot 8 is provided at the edge of the lower plate 3. The first limiting layer 9 and the second limiting layer 10 are respectively provided in the upper and lower directions of the slot 8. The first fixing part 5 is inserted into the slot 8 for positioning, and the first limiting layer 9 and the second limiting layer 10 are respectively supported in the upper and lower directions of the first fixing part 5, and the lower part of the main body 4 is supported or fitted with the lower plate 3.

[0080] In this embodiment, the upper plate 2 can be in the form of a flat plate, that is, a metal sheet is stamped to obtain a flat sheet-shaped sub-plate, and the edge of the sub-plate forms a first fixing portion 5. The first mounting hole 18, the second mounting hole 24, the third mounting hole 29 and the fifth mounting hole 48 are stamped in the sub-plate to form the upper plate 2. There is no need to process the notch 12 on the edge of the upper plate 2. When processing the lower plate 3, the processed upper plate 2 is placed in the mold, and the hot-melt material is injected into the corresponding position of the upper plate 2. The entire lower plate 3 is located below the upper plate 2, and the edge of the lower plate 3 forms a slot 8 and a first limiting layer 9. The first fixing portion 5 on the edge of the upper plate 2 is inserted into the slot 8, and the part of the lower plate 3 located below the slot 8 forms a second limiting layer 10. After the lower plate 3 is formed and cooled, the first limiting layer 9 and the second limiting layer 10 are respectively supported on the upper and lower sides of the first fixing portion 5, and the first limiting layer 9 protrudes from the surface of the upper plate 2.

[0081] Of course, in addition to being fixedly installed through the first mounting hole 18 and the second mounting hole 24, the hinged seat 19 can also be directly processed by being integrally formed with the lower plate 3. The filling cover 31 can also be processed by being integrally formed with the lower plate 3, or the filling cover 31 structure can be removed when the filling function is removed.

[0082] Specifically, the first mounting hole 18 is stamped on the upper plate 2, and the second mounting hole 24 and the fourth mounting hole 30 are no longer provided. When the lower plate 3 is formed on the upper plate 2, the hinge seat 19 and the liquid filling cover 31 are directly formed above the upper plate 2 to reduce the subsequent installation steps of the hinge seat 19 and the liquid filling cover 31.

[0083] Preferably, the size of the hinge seat 19 located at the upper end of the upper plate 2 is larger than the size of the first mounting hole 18, so that the hinge seat 19 and the lower plate 3 are clamped together on the upper and lower sides of the first mounting hole 18, and the upper plate 2 is provided with a sixth mounting hole 62 on the outer side of the first mounting hole 18. When the lower plate 3 is formed, the hot-melt material flows from the lower position of the upper plate 2 to the upper position through the first mounting hole 18 and the sixth mounting hole 62.

[0084] Preferably, the articulated seat 19 is integrally formed with the lower plate 3, and there is no need to set the first anti-fool mechanism 52 and the third anti-fool mechanism 59 between the articulated seat 19 and the flat mop head 1, and only the second anti-fool mechanism 53 between the articulated seat 19 and the hinge 20 needs to be retained.

[0085] In addition to the above-mentioned flat plate form, the upper plate 2 can also adopt the form described in Example 1, such as Fig. 22 That is, after the upper plate 2 is punched to obtain the first mounting hole 18 and other holes, the outer edge of the upper plate 2 is punched again to form the notch portion 12 and the sunken first fixing portion 5, as well as the extended section 22 formed at the edge of the first mounting hole 18 and other holes.

[0086] The lower plate 3 is also fixed by being molded together with the upper plate 2. A sixth mounting hole 62 is also set on the outer side of the first mounting hole 18. The lower plate 3 is molded on the lower side of the upper plate 2, and the hinge seat 19 is molded on the upper end of the upper plate 2. The first limiting layer 9 on the outer edge of the lower plate 3 is located in the notch 12, and the top of the first limiting layer 9 is flush with the upper surface of the upper plate 2.

[0087] A fixing groove 26 is provided in the length direction of the lower plate 3 or the first limiting layer 9 , and a scraper strip 25 is provided on the fixing groove 26 .

[0088] The following describes the processing method of the flat mop head 1 of this embodiment: Material processing of the upper plate 2: The metal sheet is punched through a preset first mold to obtain a sub-sheet of the upper plate 2 prototype with a preset size. The sub-sheet is in the shape of a rectangle, and the corners of the sub-sheet are directly rounded by stamping. The first mounting hole 18, the second mounting hole 24, the third mounting hole 29, the fifth mounting hole 48 and the sixth mounting hole 62 in the sub-sheet are also directly formed by stamping.

[0089] Flanging processing of the upper plate 2: the taken out sub-plate is placed with the protective film facing upward, and the outer edge of the upper plate 2, the edges of the first mounting hole 18, the second mounting hole 24 and the third mounting hole 29 are flanging processed through the preset second mold stamping. The outer edge of the upper plate 2 is formed into a notch portion 12 by flanging stamping, and below the notch portion 12 is the transversely extending first fixing portion 5. The first fixing portion 5 is vertically connected to the main body 4 through the connecting wall 13. The flanging obtained by stamping the edges of the first mounting hole 18, the second mounting hole 24 and the third mounting hole 29 forms an extension section 22, and the processing of the upper plate 2 is completed.

[0090] Injection molding of the lower plate 3: put the processed upper plate 2 into the sixth mold according to the preset position, the sixth mold positions the upper plate 2, and the lower plate 3 is processed according to the preset feed port at the lower position of the long side of the upper plate 2. Most of the hot-melt material is located below the upper plate 2 to form the lower plate 3. The hot-melt material on the outer edge of the lower plate 3 fills the notch 12 of the upper plate 2 upward along the outer side of the upper plate 2 or is located above the upper plate 2, so that the first limiting layer 9 and the slot 8 are partially enclosed on the outer periphery of the upper plate 2 as a whole, and the first fixing part 5 is inserted into the slot 8. The upper plate 2 is limited in the horizontal direction by the slot 8 surrounded on the outside, and in the vertical direction by the first limiting layer 9 and the lower plate 3 below or the second limiting layer 10. The upper plate 2 and the lower plate 3 fixed by the frame 6 form a flat mop head 1; the hinged seat 19 and the liquid filling cover 31 In an integrally formed manner with the lower plate 3 , the hot melt material in the middle of the lower plate 3 flows upward through the first mounting hole 18 and the sixth mounting hole 62 to form the hinge seat 19 , and the hot melt material at the corresponding position of the lower plate 3 flows upward through the third mounting hole 29 to form the liquid filling cover 31 .

[0091] Processing of the scraping strip 25: The obtained flat mop head 1 is placed in a fifth mold, and the scraping strip 25 is formed and fixed on the fixing groove 26 preset on the lower plate 3 or the first limiting layer 9 .

[0092] Accessory installation: The hinge seat 19 is fixedly installed at the first installation hole 18 and the second installation hole 24, the hinge 20 is rotatably installed on the hinge seat 19, the mop rod 7 is rotatably connected to the hinge 20, the liquid filling cover 31 is installed in the third installation hole 29 and the fourth installation hole 30, the first side plate 43, the second side plate 44 and the switch 47 are installed on the flat mop head 1, and the Velcro is installed on the bottom surface of the lower plate 3, and the installation of the flat mop is completed. Of course, when the hinge seat 19 and the liquid filling cover 31 are formed in one piece with the lower plate 3, the hinge seat 19 and the liquid filling cover 31 do not need to be installed, or when the liquid filling cover 31 is removed, there is no need to install the liquid filling cover 31. Example 3

[0093] This embodiment only describes the differences from Embodiment 1-2. The difference between this embodiment and Embodiment 1-2 is that the lower plate 3 adopts a multi-layer plate structure.

[0094] like Figure 19-22 In this embodiment, the lower plate 3 includes a first sub-plate 63 and a second sub-plate 64. The first sub-plate 63 is fixedly connected to the upper plate 2 in the manner of Embodiment 1 or Embodiment 2, and the second sub-plate 64 is fixedly installed below the first sub-plate 63.

[0095] Preferably, the upper surface of the first split plate 63 is set to be a plane and fits with the bottom surface of the upper plate 2, and a cavity 11 is formed between the lower part of the first split plate 63 and the second split plate 64, and the wiper is detachably mounted on the bottom of the second split plate 64. When the first split plate 63 is processed in the manner of embodiment 2, a plurality of seventh mounting holes 65 are provided on the first split plate 63, and the seventh mounting holes 65 are used for the mold to clamp and position the upper plate 2 to make way.

[0096] In this embodiment, the hinge seat 19 , the liquid filling cover 31 and the switch 47 are connected to the first sub-plate 63 , and the first side plate 43 and the second side plate 44 are connected to the second side plate 44 .

[0097] In addition to the above processing methods, the second sub-plate 64 is processed by injection molding. The processed second sub-plate 64 is fixedly installed on the bottom of the first sub-plate 63 by snaps, and the first side plate 43 and the second side plate 44 are installed at both ends of the second sub-plate 64.

[0098] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flat mop head, comprising an upper plate and a lower plate, characterized in that: The upper plate is made of metal and the lower plate is made of plastic. The upper plate and the lower plate are directly or indirectly molded and fixed. The upper plate includes a main body and a first fixing portion arranged on the edge of the main body. The first fixing portion is inserted into the lower plate or a separately arranged frame, and is suitable for fixing the upper plate and the lower plate up and down to prevent them from falling off.

2. The flat mop head according to claim 1, characterized in that: The lower plate is directly formed on the upper plate, a slot is provided at the edge of the lower plate, a first limiting layer and a second limiting layer are respectively provided in the upper and lower directions of the slot, the first fixing part is inserted into the slot for positioning, the first limiting layer and the second limiting layer are respectively supported in the upper and lower directions of the first fixing part, and the lower side of the main body is supported or bonded to the lower plate; Alternatively, the upper plate and the lower plate are stacked up and down, the first fixing portion is in contact with the lower plate, the frame surrounds the outer periphery of the upper plate and the lower plate, the frame is provided with a slot, a first limiting layer is provided above the slot, the first fixing portion and the edge of the lower plate are inserted into the slot, the first limiting layer prevents the upper plate from moving upward, the lower plate is fixed to the slot with hot melt or cooperates with the second limiting layer below the slot to prevent the upper plate, the lower plate and the frame from being separated.

3. The flat mop head according to claim 2, characterized in that: The edge of the upper plate is punched downward to form the first fixing portion, so that a notch portion is provided between the main body and the first fixing portion, and the first limiting layer enters the notch portion.

4. The flat mop head according to claim 3, characterized in that: The lower plate is provided with a positioning frame, the main body covers the top of the positioning frame, the notch is sleeved on the outside of the positioning frame, the positioning frame positions the upper plate at a preset position and prevents the upper plate and the lower plate from shifting in the horizontal direction.

5. The flat mop head according to claim 4, characterized in that: A cavity is provided above the lower plate, and a first reinforcement part and a second reinforcement part are provided in the cavity. The first reinforcement part is provided on the inner side surface of the cavity, and the second reinforcement part is provided on the bottom surface of the cavity and extends in the width direction of the cavity. Both ends of the second reinforcement part are connected to the inner side surface of the cavity or the first reinforcement part.

6. The flat mop head according to claim 5, characterized in that: A drainage hole is provided at the end of the lower plate, a drainage channel is provided on the second reinforcement part, and the first reinforcement part is inclined to form a guide part. When the flat mop head is rotated to a position with the drainage hole facing downward, water above the first reinforcement part can flow downward along the inclined surface of the first reinforcement part, and water blocked by the second reinforcement part can flow to the drainage hole through the drainage channel and be discharged.

7. The flat mop head according to claim 6, characterized in that: A first mounting hole is connected to the middle of the upper plate and the middle of the lower plate, and a hinge seat is fixedly installed on the first mounting hole. The hinge seat is rotatably connected to the mop rod through a hinge. A second mounting hole is also provided on the upper plate, and the bottom of the hinge seat passes through the second mounting hole to form a support with the lower plate. The edges of the first mounting hole and the second mounting hole on the upper plate are both provided with extension sections, and the extension sections are supported on the outer side of the bottom of the hinge seat.

8. The flat mop head according to claim 7, characterized in that: A fixing groove is provided at the top of the frame in the length direction, and a scraping strip for scraping and cleaning the ground is provided on the fixing groove. A positioning protrusion is provided on the hinged part, and a clearance groove is provided on the hinged seat. When the mop rod rotates in the direction away from the scraping strip, the positioning protrusion enters the clearance groove and abuts against the surface of the hinged seat or the clearance groove to support the flat-plate mop head, thereby preventing the flat-plate mop head from rotating relative to the mop rod due to gravity. When the flat-plate mop head is turned over, the positioning protrusion keeps the mop rod and the flat-plate mop head in the scraping and cleaning position, and the scraping strip can scrape the ground.

9. The flat mop head according to claim 8, characterized in that: The upper plate is also provided with a third mounting hole, and the lower plate is also provided with a fourth mounting hole matched with the third mounting hole. A liquid-filling cover is installed in the third mounting hole and the fourth mounting hole. The liquid-filling cover comprises an upper cover and a lower cover. A liquid storage cavity is enclosed between the upper cover and the lower cover. The upper cover is provided with a liquid-filling hole, and the lower cover is provided with a liquid outlet hole. The liquid in the liquid storage cavity flows to the wiping object below the lower plate through the liquid outlet hole. An extension section is provided at the edge of the third mounting hole, and a support platform extending into the third mounting hole is provided at the bottom of the extension section. A first buckle is provided at the bottom of the upper cover, and a first step and a second step located at different heights are provided at the edge of the fourth mounting hole. The upper cover enters the third mounting hole and is supported above the support platform. The first buckle enters the fourth mounting hole and is fixedly engaged with the first step. A second buckle and a stopper are provided at the upper end of the lower cover. The second buckle is fixedly engaged with the second step. The stopper enters the liquid storage cavity and is supported on the inner side of the first buckle to prevent the first buckle from detaching from the first step.

10. A method for processing a flat mop head, comprising the following steps: (a) Upper plate processing: a first mounting hole and a second mounting hole are punched out of a sub-plate of the upper plate, and the sub-plate of the upper plate is subjected to flanging processing, wherein the first mounting hole and the second mounting hole form an extended section, a notch is formed at the outer edge of the upper plate, and a connecting wall and a first fixing portion are formed at the side and bottom of the notch, respectively; (b) Lower plate processing: The lower plate is obtained by hot melt injection molding of a preset mold, wherein the lower plate is integrally formed with a positioning frame and a cavity, and the positioning frame cooperates with the connecting wall to align and position the upper plate and the lower plate; (c) Frame processing: the upper plate and the lower plate are positioned by the positioning frame and the connecting wall, the upper plate and the lower plate stacked up and down are placed in a preset mold, and the hot-melt material is filled to the outer edge of the upper plate and the lower plate to form a frame, the frame is provided with a slot and a first limiting layer, the first fixing part is inserted into the slot, and the first limiting layer is attached to the top of the upper plate to prevent the upper plate from detaching from the lower plate upwards. The upper plate and the lower plate are fixed by the frame processing to form a flat mop head; (d) Accessory installation: Install the hinge and mop rod on the flat mop head to form a complete flat mop.

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