doctor blade

Abstract

The utility model relates to a scraper, it includes the main part, the inside of main part is equipped with the receiving cavity for accomodating the spare blade, the wall surface of receiving cavity is equipped with the visible window for the surplus of spare blade in receiving cavity is used for the perspective, through setting up the observation window of communicating outside on receiving cavity, make user can real -time observation receiving cavity spare blade's surplus, avoid using the situation that receiving cavity no spare blade can be replaced appears, make user can take spare blade from receiving cavity in time when needing to replace work blade, improve user's use experience of using the scraper.

Description

Technical Field

[0001] This utility model relates to the field of cleaning tools, and more particularly to scrapers. Background Technology

[0002] Existing cleaning scrapers typically use a closed blade housing to store spare blades. Because the housing is completely closed, users cannot visually determine the number of blades remaining in the housing. When a blade needs to be replaced, they cannot know whether there are spare blades in the housing, nor can they replenish the housing with blades in a timely manner, which leads to a reduced user experience. Utility Model Content

[0003] In view of this, the present invention provides a scraper to solve the problems of scrapers in the prior art.

[0004] To achieve one, some, or all of the above objectives, or other objectives, this utility model proposes:

[0005] Scrapers, which include:

[0006] The main body has an internal cavity for storing spare blades;

[0007] The wall of the receiving cavity is provided with a viewing window for viewing the remaining amount of spare blades inside the receiving cavity.

[0008] In some embodiments, the viewing window is provided in multiple ways, and the multiple viewing windows are spaced apart along the length direction of the receiving cavity.

[0009] In some embodiments, a cover is also included, the body having an access port communicating with the receiving cavity and the outside, the cover being used to close the access port.

[0010] In some embodiments, the cover includes a hinge portion and a snap-fit ​​portion, the hinge portion being hinged to the body, the snap-fit ​​portion being swayable about the hinge portion, and the body having a slot that engages with the snap-fit ​​portion.

[0011] In some embodiments, the main body has an operating notch at the access port, through which the spare blade extends at least partially into the receiving cavity;

[0012] The cover includes a protrusion with a receiving groove. When the cover closes the access opening, the protrusion is embedded in the operating notch, and the spare blade is at least partially placed in the receiving groove.

[0013] In some embodiments, the body or the cover is provided with a hanging through hole.

[0014] In some embodiments, at least one magnetic element is also included, wherein at least one magnetic element is installed inside the body and is used to attract the spare blade into the receiving cavity.

[0015] In some embodiments, the thickness direction of the receiving cavity is the same as the thickness direction of the spare blade; at least one of the magnetic elements is disposed adjacent to the wall surface of the receiving cavity in the thickness direction.

[0016] In some embodiments, the main body includes a housing and a connector, the receiving cavity is located within the housing, the housing also has a mounting cavity extending along its length, the mounting cavity has an inlet and outlet, the connector is slidably mounted within the mounting cavity, the connector includes a mounting portion for mounting a working blade, the working blade can extend at least partially out of the mounting cavity or be received within the mounting cavity through the inlet and outlet.

[0017] In some embodiments, the connector further includes a first button and a connecting body, the connecting body being connected to the mounting portion and the first button respectively;

[0018] The housing has a guide hole that connects the mounting cavity and the outside. The guide hole extends along the length of the mounting cavity, and the first button is at least partially placed inside the guide hole.

[0019] In some embodiments, the connector further includes:

[0020] An elastic support portion is provided on the side of the connecting body away from the guide hole and supports the connecting body;

[0021] A limiting protrusion is provided on the side of the connecting body near the guide hole;

[0022] The housing further includes a first limiting groove and a locking groove, the first limiting groove and the locking groove being distributed on the inner wall of the mounting cavity; the first limiting groove and the locking groove are spaced apart along the sliding direction of the connector;

[0023] The elastic force of the elastic support causes the limiting protrusion to engage with the first limiting groove or the locking groove. Pressing the first button can disengage the limiting protrusion from the first limiting groove or the locking groove.

[0024] In some embodiments, the elastic support includes a support foot, a connecting end and a contact end disposed at both ends of the support foot, and the support foot is inclinedly disposed on the connecting body;

[0025] The connecting end is used to connect to the connecting body;

[0026] The contact end is used to abut against the inner wall of the mounting cavity away from the guide hole to form a support;

[0027] The contact end is closer to the inlet / outlet than the connection end;

[0028] Alternatively, the contact end may be located further away from the inlet / outlet than the connection end.

[0029] In some embodiments, the housing further includes a first limiting portion disposed on the inner wall of the mounting cavity;

[0030] The connector also includes a second limiting part that cooperates with the first limiting part;

[0031] When the connector slides from the storage position to the working position, the second limiting part cooperates with the first limiting part to prevent the connector from continuing to slide in the direction of the inlet and outlet. At this time, the working blade extends out of the mounting cavity through the inlet and outlet part, and the scraper is in the working state.

[0032] When a force perpendicular to the sliding direction is applied to at least one of the second limiting part and the first limiting part, the second limiting part can be disengaged from the first limiting part to release the connecting member. When the connecting member slides to the replacement position, the working blade is in a replaceable state.

[0033] In some embodiments, the connector further includes a connecting body, the mounting portion is formed at one end of the connecting body, the second limiting portion includes a fixed end and a limiting end, the fixed end is connected to the connecting body, and the limiting end is inclined relative to the connecting body and extends toward the inlet / outlet; the first limiting portion includes a second limiting groove that can engage with the limiting end, and when the connector slides to the working position, the limiting end engages with the second limiting groove; the limiting end can be disengaged from the second limiting groove by directly or indirectly pressing the second limiting portion.

[0034] In some embodiments, a second button is also included. The housing has a mounting through hole that connects the mounting cavity to the outside. The second button is connected to the mounting through hole. When the connector slides to the working position, the second button corresponds to the limiting end. Pressing the second button can cause the limiting end to disengage from the second limiting groove.

[0035] In some embodiments, the connector further includes a supporting protrusion distributed on the connector body. When the connector is in the retracted position, the supporting protrusion supports the second button, so that the second button is received within the mounting through hole.

[0036] In some embodiments, the hinge portion includes a connecting through hole, and the main body is provided with a rotating shaft, which is rotatably connected to the connecting through hole.

[0037] In some embodiments, the main body includes a housing, the housing including a bottom shell and a top shell, the bottom shell and the top shell being fastened together to form the receiving cavity; the rotating shaft is disposed on the bottom shell and / or the top shell, and when the bottom shell and the top shell are fastened together, the rotating shaft is rotatably connected to the connecting through hole;

[0038] The housing also includes a rotating shaft reinforcement, which is disposed near the rotating shaft rod.

[0039] In some embodiments, the rotating shaft reinforcement includes a locking hook and a locking hook groove. The locking hook is disposed on the top shell, and the locking hook groove is disposed on the bottom shell. The locking hook can be engaged with the locking hook groove.

[0040] Implementing the embodiments of this utility model will have the following beneficial effects:

[0041] With the above-mentioned scraper, by opening an observation window on the receiving cavity that connects to the outside, users can observe the remaining amount of spare blades in the receiving cavity in real time, avoiding the situation where there are no spare blades to replace when using the scraper. This allows users to promptly retrieve spare blades from the receiving cavity when the working blade needs to be replaced, thus improving the user experience of using the scraper. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 A schematic diagram of the overall structure of the scraper in some embodiments. Figure 1 ;

[0044] Figure 2 A schematic diagram of the overall structure of the scraper in some embodiments. Figure 2 ;

[0045] Figure 3 A schematic diagram of the overall structure of the scraper in some embodiments. Figure 3 ;

[0046] Figure 4 This is an exploded assembly diagram of the scraper in some embodiments;

[0047] Figure 5 Cross-sectional view of the overall structure of the scraper in some embodiments Figure 1 The diagram shows the connector in its stowed, working, and replacement positions.

[0048] Figure 6 for Figure 5 Enlarged view of part A in the image;

[0049] Figure 7 This is a schematic diagram of the bottom shell structure in some embodiments;

[0050] Figure 8 These are schematic diagrams of the top shell structure in some embodiments;

[0051] Figure 9 Schematic diagram of the connector structure in some embodiments Figure 1 ;

[0052] Figure 10 Schematic diagram of the connector structure in some embodiments Figure 2 ;

[0053] Figure 11 For some embodiments, the frontal projection view of the connector Figure 1 ;

[0054] Figure 12 For some embodiments, the frontal projection view of the connector Figure 2 ;

[0055] Figure 13 Cross-sectional view of the overall structure of the scraper in some embodiments Figure 2 The diagram shows the connector in its stowed and working positions.

[0056] Figure 14 for Figure 13 Enlarged view of part B in the image;

[0057] Figure 15 The following is a partial structural cross-sectional view of the scraper in some embodiments, showing the force situation when the elastic support foot is tilted towards the inlet and outlet;

[0058] Figure 16 The following is a partial structural cross-sectional view of the scraper in some embodiments, showing the force situation when the elastic support foot is tilted toward the inlet and outlet;

[0059] in:

[0060] 1-Main body; 10a-Receiving cavity; 100-Viewing window; 101-Access port; 102-Operating notch; 103-Card slot; 11-Hanging through hole;

[0061] 12-Housing shell; 12a-Mounting cavity; 12a1-First inner wall of mounting cavity; 12a2-Second inner wall of mounting cavity; 12b-Spindle reinforcement; 120-Bottom shell; 1200-Locking and positioning protrusion; 1201-First hook groove; 1202-Locking hook groove; 121-Top shell; 1210-Locking and positioning groove; 1211-First latch; 1212-Locking latch; 1213-Mounting through hole; 1214-Front end wall of top shell; 122-Inlet / Outlet; 123-Guide Hole; 1230-Working Status Indicator; 124-First Limiting Groove; 1240-Guide Wall; 1241-First Limiting Wall; 125-Locking Part; 125a-Locking Groove; 1250-Second Limiting Wall; 1251-Third Limiting Wall; 1252-Groove Bottom; 126-First Limiting Part; 1260-Second Limiting Groove; 127-Connecting Bridge; 1270-Limiting End Wall; 128-Limiting Platform;

[0062] 13-Connector; 130-Mounting part; 1300-Fixing plate; 1301-Moving plate; 1302-Locking protrusion; 1303-Locking hole; 1304-Hinge hole; 13040-Locking notch; 1305-Free end; 1306-Reset plate; 131-First button; 1310-Indicator arrow; 132-Connecting body; 1320-Base plate; 1321-Function plate; 1322-Flexible connection part; 1323 - Receiving hole; 133 - Elastic support part; 1330 - Support foot; 1331 - Connecting end; 1332 - Contact end; 134 - Mating part; 134a - Limiting protrusion; 135 - Second limiting part; 1350 - Fixed end; 1351 - Limiting end; 1352 - Overload protection foot; β - First included angle; 136 - Hinge rod; 137 - Clearance through hole; 1370 - Force-bearing protrusion; 138 - Supporting protrusion;

[0063] 15-Spindle rod; 150-Positioning spindle; 151-Insertion rod section;

[0064] 2-Working blade; 3-Spare blade;

[0065] 4-Cover; 40-Hinge; 400-Connecting arm; 401-Connecting through hole; 41-Snap-fit; 42-Protrusion; 420-Receiving groove; 421-Guide strip;

[0066] 5-Magnetic component; 6-Second button; 7-Soft rubber sleeve;

[0067] M-Cleansing Face;

[0068] F, F' - reaction force; F1, F1' - first component force; F2, F2' - second component force. Detailed Implementation

[0069] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order.

[0070] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0071] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0072] See appendix Figure 1 - Appendix Figure 16 The present invention proposes a scraper, which includes a main body 1 for mounting a working blade 2; the interior of the main body 1 is provided with a receiving cavity 10a for storing a spare blade 3; a viewing window 100 is provided on the wall of the receiving cavity 10a for viewing the remaining amount of the spare blade 3 inside the receiving cavity 10a.

[0073] Specifically, the main body 1 is a roughly flat, elongated structure with a front end and a rear end that are far apart from each other. The front end is used to install the working blade 2 so that the user can hold the main body 1 and push the working blade 2 to perform cleaning work. The rear end has a receiving cavity 10a inside. The width of the receiving cavity 10a is greater than its thickness. The width of the receiving cavity 10a is slightly larger than the width of the spare blade 3, so that the spare blade 3 stored therein is less likely to wobble in the width direction. The thickness of the receiving cavity 10a is much larger than the thickness of the spare blade 3, so that multiple spare blades 3 can be stacked in the receiving cavity 10a. The viewing window 100 can be formed on the wall in the width direction or the wall in the thickness direction of the receiving cavity 10a. For example, the viewing window 100 can be formed on the wall in the width direction of the receiving cavity 10a. The wall in the width direction can provide a larger viewing area, ensuring that the user can clearly observe the remaining amount of the spare blade 3. In other embodiments, the viewing window 100 can also be replaced with a transparent glass plate or acrylic plate, or a transparent glass plate or acrylic plate can be installed in the viewing window 100. In summary, by opening an observation window on the receiving cavity 10a that connects to the outside, users can observe the remaining amount of spare blades 3 in the receiving cavity 10a in real time, avoiding the situation where there are no spare blades 3 available for replacement in the receiving cavity 10a during use. This allows users to promptly retrieve spare blades 3 from the receiving cavity 10a when the working blade 2 needs to be replaced, thus improving the user experience of using the scraper.

[0074] In some embodiments, multiple viewing windows 100 are provided, and the multiple viewing windows 100 are distributed at intervals along the length direction of the receiving cavity 10a. The multi-window design can expand the user's observation range and accurately identify the number of spare blades 3 stacked in the receiving cavity 10a. In addition, a single viewing window 100 can adopt a long strip or circular outline, and multiple viewing windows 100 can form some regular grid patterns, which can expand the observation range and improve the aesthetics of the scraper.

[0075] In some embodiments, an access port 101 is provided on the wall at the rear end of the main body 1. The access port 101 connects the receiving cavity 10a and the outside. The access port 101 provides an access channel for the spare blade 3, thereby improving the blade replacement efficiency. Specifically, the access port 101 can be opened on the rear wall at the rear end of the main body 1. In other embodiments, the access port 101 can also be opened on the side wall or top wall at the rear end of the main body 1.

[0076] Reference Figures 1-4In some embodiments, the scraper also includes a cover 4, which is used to cover the access port 101. Covering the access port 101 with the cover 4 can prevent the spare blade 3 from leaving the receiving cavity 10a through the access port 101. Specifically, the cover 4 includes a hinge portion 40 and a locking portion 41. The hinge portion 40 is hinged to the main body 1, and the locking portion 41 can rotate around the hinge portion 40. The rear end of the main body 1 is provided with a slot 103 that cooperates with the locking portion 41. The hinge portion 40 and the locking portion 41 are respectively located at both ends on the same side of the cover 4. The hinge portion 40 protrudes from the cover 4 and a slot is opened at the rear end of the main body 1 to accommodate the hinge portion 40, so that the hinge portion 40 is hinged to the main body 1. The locking portion 41 adopts a barb structure. The slot 103 is provided at the rear end of the main body 1 to engage with the barb structure. The edge of the slot 103 has rounded corners so that the locking portion 41 can be engaged into or disengaged from the slot 103. It should also be noted that the hinge part 40 includes a connecting arm 400 extending from the cover 4 and a connecting through hole 401 opened on the connecting arm 400. A rotating shaft 15 is provided in the groove at the rear end of the main body 1. The rotating shaft 15 is rotatably connected to the connecting through hole 401, and the height of the groove is approximately the same as the thickness of the connecting arm 400, so that the connecting arm 400 will not wobble in the thickness direction when it is hinged in the groove, thereby improving the connection stability at this point.

[0077] Reference Figure 2 and Figure 3 In some embodiments, the main body 1 has an operation notch 102 at the access port 101, through which the spare blade 3 extends at least partially into the receiving cavity 10a. Specifically, the operation notch 102 is recessed towards the front end of the main body 1. The cover 4 includes a protrusion 42 that mates with the operation notch 102. When the cover 4 is opened, a portion of the structure of the spare blade 3 can be exposed through the operation notch 102 for easy access by the user. The corresponding protrusion 42 on the cover 4 ensures that the spare blade 3 is not exposed when the cover 4 is closed, making the overall structure of the scraper more compact. To prevent the protrusion 42 from squeezing the spare blade 3, The protrusion 42 is also provided with a receiving groove 420. When the cover 4 closes the access port 101, the protrusion 42 is embedded in the operation notch 102, and the spare blade 3 is at least partially placed in the receiving groove 420. In addition, the protrusion 42 also includes two guide bars 421. The guide bars 421 extend along the groove of the receiving groove 420, and the two guide bars 421 are symmetrically distributed on both sides of the groove of the receiving groove 420. When the cover 4 closes the access port 101, the two guide bars 421 are embedded in the receiving cavity 10a through the access port 101. The two guide bars 421 are locked against the inner wall of the receiving cavity 10a, further improving the stability of the cover 4 after the access port 101 is closed.

[0078] Reference Figure 1In some embodiments, the main body 1 or the cover 4 is provided with a hanging through hole 11. Specifically, the hanging through hole 11 can be opened on the cover 4, so that the scraper can be carried by a hanging rope or hung on a wall nail.

[0079] Reference Figure 4 In some embodiments, the scraper further includes at least one magnetic element 5, which is installed inside the main body 1 and used to attract the spare blade 3 into the receiving cavity 10a. Specifically, the magnetic elements 5 can be distributed on or near the side wall of the receiving cavity 10a. By attracting the spare blade 3 into the receiving cavity 10a with the magnetic elements 5, the spare blade 3 can be prevented from being carried out of the receiving cavity 10a when the cover 4 is opened. In addition, the thickness direction of the receiving cavity 10a is the same as the thickness direction of the spare blade 3. By placing the magnetic elements 5 near the wall of the receiving cavity 10a in the thickness direction, adjacent spare blades 3 are separated by magnetic moments, making it convenient for the user to take them out. It should be noted that multiple magnetic elements 5 can also be arranged near the receiving cavity 10a to increase the attraction force of the magnetic elements 5 on the spare blade 3. The magnetic elements 5 can specifically adopt magnetic structures such as magnets, electromagnets, and soft magnetic strips.

[0080] Reference Figure 4 , Figure 5 , Figure 7 and Figure 8In some embodiments, the main body 1 includes a housing 12 and a connector 13. The receiving cavity 10a is located inside the housing 12. The housing 12 is also provided with a mounting cavity 12a extending along its length. The mounting cavity 12a is provided with an inlet and outlet 122. The connector 13 is slidably installed in the mounting cavity 12a. The connector 13 includes a mounting portion 130 for mounting the working blade 2. The working blade 2 can partially extend out of the mounting cavity 12a or be received in the mounting cavity 12a through the inlet and outlet 122. Specifically, the housing 12 includes a bottom shell 120 and a top shell 121, which are interlocked to form a receiving cavity 10a and a mounting cavity 12a. The receiving cavity 10a is located at the rear end of the housing 12, and its access ports 101 are distributed on the rear end face. The mounting cavity 12a serves as the main chamber inside the housing 12, providing installation and movement space for the connector 13 and receiving space for the working blade 2. The inlet and outlet 122 of the mounting cavity 12a are distributed on the front end face of the housing 12. The connector 13 slides within the mounting cavity 12a and has a storage position, a working position, and a replacement position. When the connector 13 is in the storage position, the working blade 2 is completely housed in the mounting cavity 12a, and the scraper is in the storage state. When the connector 13 is in the working position, part of the working blade 2 extends out of the mounting cavity 12a through the inlet and outlet 122, and the scraper is in the working state. When the connector 13 is in the replacement position, both the working blade 2 and the mounting part 130 extend out of the mounting cavity 12a through the inlet and outlet 122, and the scraper is in the blade replacement state. The user can remove the working blade 2 from the mounting part 130 and take out the spare blade 3 from the housing cavity 10a and install it on the mounting part 130.

[0081] It should be noted that the mounting cavity 12a includes a first inner wall 12a1 and a second inner wall 12a2, wherein the first inner wall 12a1 is formed by the top shell 121, the second inner wall 12a2 is formed by the bottom shell 120, and the connector 13 is located between the first inner wall 12a1 and the second inner wall 12a2.

[0082] Reference Figure 7 and Figure 8Both the bottom shell 120 and the top shell 121 are strip-shaped, flat plate-like structures. The shell 12 includes a connecting bridge 127, which is integrally formed on the front end of the bottom shell 120. The connecting bridge 127 and the bottom wall of the bottom shell 120 together form an inlet / outlet 122. The connecting bridge 127 has an exposed end wall and a limiting end wall 1270 along the length of the bottom shell 120. The exposed surface is flush with the front end face of the bottom shell 120, and the limiting end wall 1270 faces the rear end of the bottom shell 120. When the top shell 121 is fastened onto the bottom shell 120, the front end wall 1214 of the top shell 121 abuts against the limiting end wall 1270, and the rear end of the top shell 121 is flush with the rear end of the bottom shell 120, forming an access port 101. It should also be noted that the thickness of the connecting bridge 127 is... The thickness of the top shell 121 is approximately the same as that of the bottom shell 120, so that after the top shell 121 is fastened to the bottom shell 120, the surface of the top shell 121 can smoothly transition to the surface of the connecting bridge 127. In use, the bottom shell 120 faces the cleaning surface M, and the working blade 2 extends out of the mounting cavity 12a through the inlet and outlet 122. When the user holds the shell 12 and cleans the cleaning surface M with the working blade 2, the reaction force F of the cleaning surface M on the working blade 2 will be transmitted to the connecting bridge 127, so that the limiting end wall 1270 abuts more tightly with the front end wall 1214 of the top shell 121, which strengthens the connection between the top shell 121 and the bottom shell 120 during use and avoids cracks or breakage at the connection between the bottom shell 120 and the top shell 121 during use.

[0083] Reference Figure 7 and Figure 8 In some embodiments, the bottom shell 120 is provided with a plurality of locking and positioning protrusions 1200, which are evenly distributed along the edge spacing of the bottom shell 120. The top shell 121 is provided with a plurality of locking and positioning grooves 1210 corresponding to the plurality of locking and positioning protrusions 1200. When the top shell 121 covers the bottom shell 120, the plurality of locking and positioning grooves 1210 and the plurality of locking and positioning protrusions 1200 are engaged one-to-one, so that the top shell 121 and the bottom shell 120 cannot be misaligned in the length and width directions. Furthermore, the engagement of the locking and positioning grooves 1210 and the locking and positioning protrusions 1200 makes it difficult for the top shell 121 and the bottom shell 120 to separate in the thickness direction. It should also be noted that the outer diameter of the locking and positioning protrusions 1200 distributed at the four corners of the bottom shell 120 can be set to be relatively large, and the locking and positioning grooves 1210 corresponding to the four corners of the top shell 121 can be adjusted to match them. The locking and positioning protrusions 1200 and locking and positioning grooves 1210 with larger outer diameters play the role of positioning and basic fastening, while the remaining locking and positioning protrusions 1200 and locking and positioning grooves 1210 with smaller outer diameters play the role of assisting and strengthening the fastening.

[0084] Reference Figure 7 and Figure 8In some embodiments, the front end of the top shell 121 is provided with at least two first hooks 1211, which are symmetrically distributed along the width direction of the top shell 121. The bottom shell 120 is provided with at least two first hook grooves 1201 corresponding to the at least two first hooks 1211. The two first hook grooves 1201 are located close to the connecting bridge 127. When the top shell 121 covers the bottom shell 120, the first hooks 1211 are inserted into the first hook grooves 1201 and the two are fastened to each other, thereby strengthening the connection between the top shell 121 and the bottom shell 120 in the thickness direction.

[0085] Reference Figure 7 and Figure 8 In some embodiments, the rear end of the top shell 121 is provided with at least one locking hook 1212, and the bottom shell 120 is provided with at least one locking hook groove 1202 corresponding to the at least one locking hook 1212. When the top shell 121 covers the bottom shell 120, the locking hook 1212 is inserted into the locking hook groove 1202, and the two are fastened to each other, which further strengthens the connection between the top shell 121 and the bottom shell 120 in the thickness direction, and makes the fastening of each part of the top shell 121 and the bottom shell 120 stable, and makes the hinge stability between the cover 4 and the rear end of the main body 1 higher.

[0086] It should also be noted that in other embodiments, the first hook 1211 and the locking hook 1212 may be disposed on the bottom shell 120, and the first hook groove 1201 and the locking hook groove 1202 may be disposed on the top shell 121 accordingly.

[0087] To further enhance the connection between the bottom shell 120 and the top shell 121 and improve the user's grip, in some embodiments, the scraper also includes two soft rubber sleeves 7, such as... Figure 3 and Figure 4 As shown, two soft rubber sleeves 7 are symmetrically arranged on both sides of the housing 12, and the soft rubber sleeves 7 simultaneously wrap around the bottom shell 120 and the top shell 121, improving the connection strength between the bottom shell 120 and the top shell 121 in the thickness direction. The soft rubber sleeves 7 extend from the front end of the housing 12 to the rear end of the housing 12, which can not only improve the connection stability between the bottom shell 120 and the top shell 121, but also prevent cracks from forming between the bottom shell 120 and the top shell 121 in the length direction. The soft rubber sleeves 7 can be fixed to the corresponding positions of the housing 12 by heat fusion. The soft rubber properties of the soft rubber sleeves 7 themselves can reduce the damage to the user's palm when the user holds the scraper for a long time. Furthermore, anti-slip textures can be set on the soft rubber sleeves 7 to increase the friction between the user's palm and the soft rubber sleeves 7, allowing the user to hold the scraper stably.

[0088] Reference Figure 4 , Figure 7 and Figure 8In some embodiments, the pivot rod 15 includes a positioning pivot 150 disposed on the bottom shell 120 and an insertion rod portion 151 disposed on the top shell 121. The insertion rod portion 151 is coaxially connected with the positioning pivot 150. Specifically, the end wall of the positioning pivot 150 is provided with an insertion hole for the insertion rod portion 151 to be inserted. During installation, the connecting through hole 401 of the connecting arm 400 of the cover 4 is fitted onto the positioning pivot 150, and then the insertion rod portion 151 of the top shell 121 is inserted into the connecting through hole 401 and inserted into the interior of the positioning pivot 150, thereby hinged the cover 4 to the shell 12. In some embodiments, the locking hook 1212 and the locking hook groove 1202 together form the pivot reinforcement portion 12b. The pivot reinforcement portion 12b is disposed close to the pivot rod 15. The pivot reinforcement portion 12b connects the top shell 121 and the bottom shell 120, improving the connection stability between the two. Specifically, the locking... The locking hook 1212 is specifically located near the hinge portion 40 of the cover 4, and the locking groove 1202 can be specifically formed on the cavity wall of the receiving cavity 10a. By engaging the locking hook 1212 with the locking groove 1202, the connection stability between the rear ends of the bottom shell 120 and the top shell 121 is improved. On the other hand, the cover 4 used for the receiving cavity 10a is inevitably subjected to the force in the thickness direction during opening and closing, which can easily cause cracks in the bottom shell 120 and the top shell 121, and the insertion rod portion 151 can easily detach from the positioning pivot 150 and the connecting through hole 401. The locking hook 1212 and the locking groove 1202 are located near the hinge portion 40 to achieve axial limitation of the insertion rod portion 151 and the positioning pivot 150, making it less likely for the insertion rod portion 151 and the positioning pivot 150 to separate axially, thereby improving the connection stability between the cover 4 and the main body 1. In other embodiments, the locking hooks 1212 and locking slots 1202 can be configured as multiple, with multiple locking hooks 1212 distributed as needed at various crack-prone positions at the rear end of the top shell 121.

[0089] It should be noted that the working blade 2 and the spare blade 3 have the same structure, and for ease of explanation, they will be referred to as blades below. In some embodiments, to facilitate blade replacement, the mounting part 130 includes: a fixed plate 1300 and a movable plate 1301, such as... Figure 9 and Figure 10As shown, the fixed plate 1300 and the connector 13 are integrally formed; the fixed plate 1300 is provided with multiple locking protrusions 1302 for limiting the sliding of the blade; the movable plate 1301 is provided with locking holes 1303 corresponding to the locking protrusions 1302; the movable plate 1301 includes a hinge hole 1304 and a free end 1305; the hinge hole 1304 is hinged to the connector 13; the free end 1305 can swing around the hinge hole 1304; when the movable plate 1301 is fastened to the fixed plate 1300, the blade is clamped and fixed through the locking hole 1303 and the locking protrusions 1302. Specifically, hinge holes 1304 are formed on both sides of the movable plate 1301. The connector 13 is provided with hinge rods 136 protruding to both sides. The hinge rods 136 are rotatably connected to the hinge holes 1304, allowing the free end 1305 of the movable plate 1301 to swing around the hinge axis. To facilitate the assembly of the hinge holes 1304 and the hinge rods 136, the wall of the hinge holes 1304 is provided with axially cut insertion notches 13040. Applying a radial force to the hinge rods 136 allows them to enter or leave the hinge holes 1304 radially through the insertion notches 13040. When no radial force is applied, the hinge rods 136 cannot pass through the insertion notches 13040. The inlet 13040 disengages from the hinge hole 1304, allowing the hinge rod 136 to rotate within the hinge hole 1304. The locking protrusion 1302 on the fixed plate 1300 is set to correspond to the hole on the blade. The blade is a conventional design, which will not be elaborated in this embodiment. The blade replacement method is as follows: When the scraper is in the blade replacement state, the free end 1305 of the movable plate 1301 can be bent to make the movable plate 1301 swing, thereby removing the blade from the fixed plate 1300. Then, the new blade is inserted into the corresponding locking protrusion 1302 on the fixed plate 1300, and the movable plate 1301 is used to clamp and fix it.

[0090] Reference Figure 6 and Figure 9In some embodiments, the mounting portion 130 further includes a reset plate 1306. The reset plate 1306 is disposed on the side of the movable plate 1301 away from the free end 1305, and extends away from the free end 1305. The reset plate 1306 and the free end 1305 are distributed on both sides of the hinge hole 1304. The connector 13 includes a clearance through hole 137 and a force-bearing protrusion 1370. The clearance through hole 137 is opened near the fixed plate 1300, and the force-bearing protrusion 1370 is disposed in the clearance through hole 137 and extends radially from the inner wall of the hole. When the movable plate 1301 is hingedly mounted on the connector 13, the reset plate 1306 is inserted into the clearance through hole 137, and the end of the reset plate 1306 can be connected to the hinge. The force-bearing protrusion 1370 abuts against the side facing the bottom shell 120. Specifically, when the movable plate 1301 is fastened to the fixed plate 1300, the reset plate 1306 abuts against the force-bearing protrusion 1370, and the force-bearing protrusion 1370 undergoes elastic deformation. By using external force to pry the free end 1305 of the movable plate 1301, the locking protrusion 1302 disengages from the locking hole 1303. At this time, the elastic force generated by the elastic deformation of the force-bearing protrusion 1370 drives the free end 1305 to quickly move away from the fixed plate 1300. This method is beneficial when changing the working blade 2. The user only needs to release the locking protrusion 1302 from the locking hole 1303, and the movable plate 1301 will naturally spring up and open, making it easier for the user to change the blade.

[0091] Reference Figures 9-12 In some embodiments, the connector 13 further includes a first button 131 and a connecting body 132, the connecting body 132 connecting the mounting part 130 and the first button 131 respectively; the housing 12 is provided with a guide hole 123 communicating with the mounting cavity 12a and the outside, the guide hole 123 extending along the length direction of the mounting cavity 12a, the first button 131 being at least partially placed in the guide hole 123, specifically, the guide holes 123 are distributed on the top housing 121; the outer contour of the connecting body 132 is approximately the same as the inner contour of the mounting cavity 12a. Similarly, to improve the sliding stability of the connecting body 132 within the mounting cavity 12a, a first button 131 and a mounting portion 130 are respectively located at both ends of the connecting body 132. The first button 131 is a protruding structure on the connecting body 132. The user can press and push the first button 131 through the guide hole 123, causing the connecting body 132 to slide within the mounting cavity 12a. This allows the working blade 2 on the mounting portion 130 to extend out of or be contained within the mounting cavity 12a, or to extend completely out of the mounting cavity 12a for easy replacement. It should also be noted that the outer surface of the housing 12 is also provided with a working status indicator 1230, which is distributed beside the guide hole 123. An indicator arrow 1310 is provided on the surface of the first button 131. The indicator arrow 1310 pointing to the working status indicator 1230 indicates that the connecting member 13 has been pushed to the designated working position and the scraper is in working condition.

[0092] Reference Figure 10 , Figure 11 , Figure 12 In some embodiments, the connector 13 further includes an elastic support portion 133 and a mating portion 134. In some embodiments, the mating portion 134 includes a limiting protrusion 134a. The elastic support portion 133 is located on the side of the connecting body 132 away from the guide hole 123 and supports the connecting body 132. The limiting protrusion 134a is located on the side of the connecting body 132 near the guide hole 123. The housing 12 further includes a first limiting groove 124 and a locking portion 125. In some embodiments, when the working blade 2 extends out of the mounting cavity 12a and is in the working position, the locking portion 125 engages with the mating portion to limit the relative position of the connector 13 and the housing 12. 125 includes a locking groove 125a that can engage with the limiting protrusion 134a; specifically, the first limiting groove 124 and the locking groove 125a are provided on the first inner wall 12a1 of the mounting cavity 12a, and the first limiting groove 124 and the locking groove 125a are distributed at intervals along the sliding direction of the connector 13; the elastic support part 133 forms an elastic support for the connecting body 132 by abutting against the second inner wall 12a2 of the mounting cavity 12a, and the elastic force of the elastic support part 133 drives the limiting protrusion 134a to engage with the first limiting groove 124 or the locking groove 125a, and pressing the first button 131 can cause the limiting protrusion 134a to disengage from the first limiting groove 124 or the locking groove 125a. Since the mounting cavity 12a is formed by the mutual covering of the bottom shell 120 and the top shell 121, the guide hole 123, the first limiting groove 124, and the locking groove 125a are specifically provided on the top shell 121. The elastic support part 133 specifically supports the connecting body 132 by contacting the bottom shell 120. The elastic support part 133 specifically adopts the following... Figure 12 or Figure 15The support foot 1330 shown extends from the connecting body 132 and is inclined. The inclined arrangement of the support foot 1330 naturally provides support for the connecting body 132, causing one end of the connecting body 132 to be suspended and providing elasticity. In other embodiments, the elastic support part 133 can also be a structural component with elastic return, such as a spring or elastic rubber. When the connecting body 132 is pressed by the first button 131, the connecting body 132 moves closer to and is compressed towards the bottom shell 120. The elastic support portion 133 allows the limiting protrusion 134a to disengage from the first limiting groove 124 or locking groove 125a. Pushing the first button 131 allows the connecting body 132 to slide. After releasing the pressure of the first button 131, the limiting protrusion 134a, under the elastic force of the elastic support portion 133, will engage with the first limiting groove 124 or locking groove 125a, thus maintaining the connecting body 132 in a designated position. The distance between the first limiting groove 124 and the locking groove 125a is set to the distance between the connecting member 1. 3. The sliding stroke from the storage position to the working position is the same, and the first limiting groove 124 is far away from the inlet / outlet 122, while the locking groove 125a is close to the inlet / outlet 122. Specifically, when the connector 13 is in the storage position, the limiting protrusion 134a engages with the first limiting groove 124, and when the connector 13 is in the working position, the limiting protrusion 134a engages with the locking groove 125a. To improve stability, the number of the first limiting groove 124 and the locking groove 125a can be set to two, with the two first limiting grooves 124 symmetrically distributed on the guide. Two locking grooves 125a are symmetrically distributed on both sides of the guide hole 123 along its length. Correspondingly, two limiting protrusions 134a are provided, and the two limiting protrusions 134a are symmetrically distributed on both sides of the first button 131. The limiting protrusions 134a are centrally located in the length direction of the first button 131, so that when the user presses the first button 131, the limiting protrusions 134a can be displaced along the pressing direction to disengage from the first limiting groove 124 or locking groove 125a.

[0093] Reference Figure 13 and Figure 14When the connector 13 is in the retracted position, the scraper is in the retracted state. To facilitate the quick switching of the scraper from the retracted state to the working state and improve the smoothness of the user's operation, the first limiting groove 124 includes a guide wall 1240 and a first limiting wall 1241. The guide wall 1240 is located close to the locking groove 125a, and the first limiting wall 1241 is located away from the locking groove 125a. The guide wall 1240 is an inclined groove wall, so that when the scraper needs to be switched from the retracted state to the working state, the limiting protrusion 134a can quickly disengage from the first limiting groove 124 through the guide wall 1240. During this process, the user does not need to press the first button 131 to the limit position. Just press it lightly and push the first button 131 towards the inlet / outlet 122 to make the limiting protrusion 134a disengage. 34a disengages from the first limiting groove 124. In general, the guide wall 1240 serves as an inclined guide surface for the limiting protrusion 134a to enter and disengage from the first limiting groove 124, achieving a low-resistance unlocking effect and thus improving the user experience. Conversely, when the connector 13 moves from the working position to the storage position, the guide wall 1240 also facilitates the quick entry of the limiting protrusion 134a into the first limiting groove 124. The first limiting wall 1241 is approximately perpendicular to the shell surface of the top shell 121. In other words, the first limiting wall 1241 forms an approximately 90-degree angle with the sliding direction of the connector 13. The first limiting wall 1241 naturally forms a physical blocking surface when the limiting protrusion 134a slides away from the inlet and outlet 122. When the first button 131 is not pressed by external force, the first limiting wall 1241 plays a locking role.

[0094] Since the working state is the main usage state of the scraper, in order to keep the connector 13 in the working position, such as Figure 14 As shown, in some embodiments, the locking groove 125a includes opposing second limiting walls 1250 and third limiting walls 1251, and a groove bottom 1252 connecting the second limiting walls 1250 and the third limiting walls 1251. The groove bottom 1252 is substantially parallel to the shell surface of the top shell 121. The second limiting wall 1250 is close to the first limiting groove 124, and the third limiting wall 1251 is away from the first limiting groove 124. The second limiting wall 1250, the third limiting wall 1251, and the first limiting wall 1251 are all adjacent to the first limiting wall 124. Both are roughly perpendicular to the shell surface of the top shell 121, that is, the second limiting wall 1250 and the third limiting wall 1251 form an angle of approximately 90 degrees with the sliding direction of the connecting member 13. When the limiting protrusion 134a is engaged in the locking groove 125a, the second limiting wall 1250 and the third limiting wall 1251 form a physical blocking surface when the limiting protrusion 134a slides. When the first button 131 is not pressed by external force, the second limiting wall 1250 and the third limiting wall 1251 play a locking role.

[0095] Reference Figures 10-16The elastic support includes a support foot 1330, a connecting end 1331 and a contact end 1332 disposed at both ends of the support foot 1330. The support foot 1330 is inclinedly disposed on the connecting body 132. The connecting end 1331 is used to connect with the connecting body 132, and a limiting protrusion 134a is disposed adjacent to the connecting end 1331. Specifically, the limiting protrusion 134a is disposed closer to the connecting end 1331 than the contact end 1332. The contact end 1332 is used to contact the second inner wall 12 of the mounting cavity 12a. a2 forms a support by abutting; when the scraper is in operation, the working blade 2 fixed on the mounting part 130 will be subjected to a reaction force F from the cleaning surface M when it comes into contact with the cleaning surface M. This reaction force F will be transmitted to the connecting body 132 through the fixing plate 1300. Depending on the tilt direction of the support foot 1330, the reaction force F at the support foot 1330 will be different, thus having different effects on the support foot 1330 and the limiting protrusion 134a formed at the connecting end 1331:

[0096] When the elastic support 133 adopts such Figure 15 When the support leg 1330 is shown, the support leg 1330 extends at an angle away from the inlet / outlet 122, that is, the contact end 1332 is farther away from the inlet / outlet 122 than the connecting end 1331. At this time, the support leg 1330 is subjected to the following... Figure 15 The first component force F1 and the second component force F2 are shown. The first component force F1 extends towards the support foot 1330, i.e., it faces away from the limiting protrusion 134a. The second component force F2 extends away from the top shell 121, i.e., it is in the same direction as pressing the first button 131. An increase in the reaction force F will increase both the first component force F1 and the second component force F2. When the user pushes the scraper forcefully, causing the working blade 2 to contact the cleaning surface M, the excessive reaction force F will increase both the first component force F1 and the second component force F2. As force F2 increases, the second component of force F2 causes the support foot 1330 to deform away from the top shell 121, which in turn causes the limiting protrusion 134a, which was originally engaged with the locking groove 125a, to disengage from the locking groove 125a. The increase of the first component force F1 further accelerates the speed at which the limiting protrusion 134a disengages from the locking groove 125a, causing the locking function of the limiting protrusion 134a to fail. As a result, the working blade 2 cannot maintain its working state for cleaning work after entering the mounting cavity 12a, leading to a decline in the user experience.

[0097] Conversely, when the elastic support part 133 adopts such as Figure 16 When the support leg 1330 is shown, the support leg 1330 extends at an angle towards the inlet / outlet 122, that is, the contact end 1332 is closer to the inlet / outlet 122 than the connecting end 1331. At this time, the support leg 1330 is subjected to the following... Figure 16The first component force F1' and the second component force F2' shown are as follows: the first component force F1' is in the opposite direction to the extension direction of the support foot 1330, that is, the first component force F1' is towards the limiting protrusion 134a; the second component force F2' is in the direction closer to the top shell 121, that is, the direction of the second component force F2' is opposite to the direction of pressing the first button 131. An increase in the reaction force F' will increase both the first component force F1' and the second component force F2'. When the user pushes the scraper forcefully to make the working blade 2 contact the cleaning surface M, the excessive reaction force F' increases both the first component force F1' and the second component force F2'. The second component force F2', due to its distance from the support foot 1330... Since the forces acting on the top shell 121 are opposite to those acting on the top shell 121, the increase of the second component force F2' will not cause the support foot 1330 to deform away from the top shell 121. However, since the first component force F1' is directed towards the limiting protrusion 134a, its increase will cause the limiting protrusion 134a to be more closely attached to the second limiting wall 1250 and the bottom 1252 of the locking groove 125a. This prevents the limiting protrusion 134a from disengaging from the locking groove 125a, cleverly converting the reaction force F' into a locking force that strengthens the locking ability of the limiting protrusion 134a. This keeps the working blade 2 in a working state for cleaning, improving the user's experience when using the scraper.

[0098] It should also be noted that in other embodiments, the mating part 134 may adopt a groove structure, and the locking part 125 may adopt a protrusion structure that engages with the groove structure; alternatively, both the mating part 134 and the locking part 125 may adopt protrusion structures. The specific structures of the mating part 134 and the locking part 125 described above can be combined as follows: Figure 16 The support foot 1330 shown achieves the locking effect of the connector 13 when it is in the working position; and the locking part 125 can also be opened on the inner wall in the thickness direction of the mounting cavity 12a, that is, on the remaining inner wall except for the first inner wall 12a1 and the second inner wall 12a2, and the mating part 134 is correspondingly set at the position where the connecting body 132 can engage with the locking part 125.

[0099] Reference Figure 3 , Figure 5 , Figure 6 , Figure 8 and Figure 10In some embodiments, the housing 12 further includes a first limiting part 126, which is disposed on the inner wall of the mounting cavity 12a; the connector 13 further includes a second limiting part 135 that cooperates with the first limiting part 126; when the connector 13 slides from the storage position to the working position, the second limiting part 135 cooperates with the first limiting part 126 to prevent the connector 13 from continuing to slide in the direction of the inlet / outlet 122. At this time, the working blade 2 extends out of the mounting cavity 12a through the inlet / outlet 122, and the scraper is in working condition; when a force perpendicular to the sliding direction is applied to at least one of the second limiting part 135 and the first limiting part 126, the second limiting part 135 can disengage from the first limiting part 126 to release the connector 13. When the connector 13 slides to the replacement position, the scraper is in the blade replacement state.

[0100] Specifically, after the second limiting part 135 engages with the first limiting part 126, a force perpendicular to the sliding direction of the connector 13 needs to be applied to either the second limiting part 135 or the first limiting part 126. While the user is controlling the sliding of the connector 13 with one hand, after the first limiting part 126 engages with the second limiting part 135 to restrict the sliding of the connector 13, the other hand is needed to apply the corresponding force to the second limiting part 135 or the first limiting part 126 to release the engagement between the first limiting part 126 and the second limiting part 135, allowing the connector 13 to continue sliding. This method prevents the user from directly pushing the working blade 2 from the storage state to the replacement state when using the scraper with one hand, thus preventing the blade from falling off the scraper and improving the user experience.

[0101] Reference Figure 10 , Figure 11 and Figure 12In some embodiments, the second limiting part 135 includes a fixed end 1350 and a limiting end 1351. The fixed end 1350 is connected to the connecting body 132, and the limiting end 1351 is inclined relative to the connecting body 132 and extends toward the inlet / outlet 122. The first limiting part 126 includes a second limiting groove 1260 that can engage with the limiting end 1351. When the connecting member 13 slides to the working position, the limiting end 1351 engages with the second limiting groove 1260. The limiting end 1351 can be disengaged from the second limiting groove 1260 by directly or indirectly pressing the second limiting part 135.Specifically, the second limiting groove 1260 is formed on the inner wall of the mounting cavity 12a, i.e., the inner shell surface of the top shell 121. The second limiting groove 1260 is located between the inlet / outlet 122 and the guide hole 123. The second limiting groove 1260 adopts an open groove design, with its groove facing the guide hole 123. The groove and the guide hole 123 are connected by a smooth surface without protrusions, so that the limiting end 1351 can freely switch between the position of the groove and the guide hole 123. The second limiting part 135 forms a first included angle β with the connecting body 132. The first included angle β is set towards the inlet / outlet 122. The second limiting part 135 can be regarded as a spring piece that is raised from the connecting body 132. Its limiting end 1351 is subjected to the force from the top shell 121. The angle β can decrease due to compression or external force pressing in the direction of sliding perpendicular to the connecting body 132. When no external force is applied, the angle β returns to its original position. When the connector 13 is in the retracted position, the limiting end 1351 abuts against the inner wall of the mounting cavity 12a, and the first angle β faces the second limiting groove 1260. When the connector 13 slides from the retracted position to the working position, the limiting end 1351 engages with the second limiting groove 1260, thereby restricting the connector 13 from sliding further towards the inlet / outlet 122, keeping the scraper in the working state. During this process, since the limiting end 1351 always abuts against the inner wall of the mounting cavity 12a, and the first angle β faces the second limiting groove 1260, the scraper remains in the working state. 60, allowing users to switch the scraper from the storage state to the working state without performing any operation other than pushing the connector 13. Pushing the connector 13 towards the access port 101 switches the scraper from the working state to the storage state, facilitating easy use or storage of the scraper. When the working blade 2 needs to be replaced, the user can directly press the limiting end 1351 with their other hand or indirectly apply force to the limiting end 1351 using the second button 6 (described later). This causes the second limiting part 135 to deform towards the bottom shell 120, disengaging the limiting end 1351 from the second limiting groove 1260. At this point, the connector 13 can be pushed towards the inlet / outlet 122. This allows the working blade 2 to fully extend out of the mounting cavity 12a for replacement. In this position, the limiting end 1351 still abuts against the inner wall of the mounting cavity 12a, and the first included angle β faces away from the second limiting groove 1260. The limiting end 1351 and the fixed end 1350 are connected by a flat surface transition, so that when the connecting piece 13 slides from this position to the working position, the limiting end 1351 will not be interfered with by the second limiting groove 1260. That is, the connecting piece 13 can slide smoothly from this position to the storage position, so that after the user replaces the working blade 2 on the mounting part 130 with the scraper, he / she can quickly switch to the working state or the storage state, making it easier for the user to use the scraper and greatly improving the user experience.

[0102] Reference Figure 3 , Figure 5 and Figure 6 In some embodiments, the scraper also includes a second button 6. The housing 12 has a mounting through hole 1213 connecting the mounting cavity 12a to the outside. The second button 6 is connected to the mounting through hole 1213, which is specifically formed on the top housing 121. When the connector 13 slides to the working position, the second button 6 corresponds to the limiting end 1351. Pressing the second button 6 can disengage the limiting end 1351 from the second limiting groove 1260. Specifically, when the connector 13 is in the working position, the side of the second button 6 facing the mounting cavity 12a remains in contact with the limiting end 1351. When the second button 6 is not subjected to external force, the elasticity of the second limiting part 135 causes its limiting end 1351 to always lift the second button 6, so that the top surface of the second button 6 is exposed in the mounting through hole 1213 for easy pressing by the user.

[0103] To enhance the compactness of the scraper's internal structure, refer to Figure 10 In some embodiments, the connecting body 132 includes a base plate 1320 and a functional plate 1321. The base plate 1320 is used to connect the mounting plate and the functional plate 1321. A flexible connection portion 1322 is formed at the connection between the base plate 1320 and the functional plate 1321. The base plate 1320 is provided with a receiving hole 1323, which is a rectangular opening on the base plate 1320. The receiving hole 1323 provides clearance and accommodating space for the second limiting portion 135. Specifically, the fixed end 1350 is connected to the flexible connection portion 1322, limiting... The end 1351 extends inclined towards the inlet / outlet 122, and the limiting end 1351 tilts up and moves away from the receiving hole 1323 when not subjected to external force. The limiting end 1351 can enter the receiving hole 1323 when directly or indirectly pressed by external force. The function plate 1321 serves as the supporting structure for the first button 131, the limiting protrusion 134a, and the elastic support 133. The elastic support 133 can be specifically selected as a support foot 1330 inclined towards the inlet / outlet 122, and the length of the support foot 1330 is less than the length of the function plate 1321. Figure 11 and Figure 12As shown, the first button 131 and the limiting end 1351 are distributed at both ends of the flexible connection portion 1322. The function plate 1321 and the second limiting end 1351 swing slightly around the flexible connection portion 1322, and the swing direction of the function plate 1321 and the second limiting end 135 is opposite. This means that when the user presses the first button 131, the function plate 1321 presses down and moves closer to the bottom shell 120, while the limiting end 1351 tilts away from the receiving hole 1323 and presses against the top shell 121. This structural design allows the user to press the first button 131 and push it to slide from the storage position to the working position. When in motion, the limiting end 1351 will inevitably cooperate with the first limiting part 126 provided on the top shell 121, preventing it from sliding towards the inlet / outlet 122. That is, the connecting part 13 is in the working position and cannot continue to slide to the replacement position, allowing the user to operate the scraper with one hand. The scraper can only switch between the storage state and the working state. If the working blade 2 needs to be replaced, the other hand must be used to apply indirect or direct pressing force to the limiting end 1351 to unlock the limiting end 1351 from the second limiting groove 1260. This significantly improves the safety and practicality of the scraper during use. It should also be further explained that when the scraper is in working condition and the working blade 2 is subjected to a large reaction force, the force of the second component force on the support foot 1330 will also cause the functional plate 1321 to swing towards the bottom shell 120, and the limiting end 1351 to tilt away from the receiving hole 1323 and stick to the second limiting groove 1260, thus converting the reaction force of the working blade 2 into the locking force of the limiting end 1351, thereby improving the structural stability of the scraper when it is in working condition.

[0104] Reference Figure 6 and Figure 10 In some embodiments, the second limiting part 135 further includes an overload protection foot 1352, which protrudes from the thickness direction of the limiting end 1351. The overload protection foot 1352 can at least partially pass through the receiving hole 1323. Specifically, when the limiting end 1351 is not pressed by external force, the overload protection foot 1352 is partially placed in the receiving hole 1323. When the limiting end 1351 is pressed by external force, the overload protection foot 1352 partially passes through the receiving hole 1323 and contacts the bottom shell 120 to form support for the limiting end 1351, preventing the limiting end 1351 from swinging excessively under force, which could cause the connection between the fixed end 1350 and the connecting body 132 to break, thereby improving the service life of the internal structure of the scraper. The contact surface between the overload protection foot 1352 and the bottom shell 120 is an arc-shaped surface, which reduces the friction between the overload protection foot 1352 and the bottom shell 120. When the user presses the first button 131 and the second button 6, the connector 13 can be pushed to slide to the change position with less effort.

[0105] Reference Figure 6 and Figure 9In some embodiments, the connector 13 further includes a supporting protrusion 138, which is distributed on the connecting body 132, specifically on the base plate 1320, and between the receiving hole 1323 and the fixing plate 1300. When the connector 13 is in the retracted position, the supporting protrusion 138 supports the second button 6, so that the second button 6 is received in the mounting through hole 1213. When the connector 13 moves from the retracted position to the working position, the second button 6 is fully received in the mounting through hole 1213 by the support of the supporting protrusion 138, so that the limiting end 1351 does not abut against the side wall of the second button 6, thus avoiding interference of the second button 6 with the movement of the limiting end 1351.

[0106] Reference Figure 4 and Figure 7 In some embodiments, the mounting cavity 12a further includes a limiting platform 128, which is distributed on the inner wall of the mounting cavity 12a along its length. The limiting platform 128 is used to limit the sliding stroke of the connector 13. Specifically, the width of the mounting part 130 is greater than the width of the connecting body 132. The limiting platform 128 is located in the mounting cavity 12a near the inlet and outlet 122. The limiting platform 128 can abut against the mounting part 130 to limit the sliding stroke of the connector 13. When the connector 13 is pushed to slide, causing the working blade to... After piece 2 is received into the mounting cavity 12a through inlet / outlet 122, it abuts against the limiting platform 128 through the mounting part 130, preventing the connector 13 from sliding further toward the receiving cavity 10a, thereby further improving the connection stability of the connector 13 within the main body 1. In other embodiments, the limiting platform 128 may also be located in the mounting cavity 12a away from the inlet / outlet 122, so that the limiting platform 128 abuts against the base plate 1320 or the functional plate 1321, thereby limiting the sliding stroke of the connector 13.

[0107] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A scraper, characterized in that, include: The main body (1) has a receiving cavity (10a) inside for storing spare blades (3); The wall of the receiving cavity (10a) is provided with a viewing window (100) for viewing the remaining amount of the spare blade (3) inside the receiving cavity (10a).

2. The scraper according to claim 1, characterized in that, The viewing window (100) is provided in multiple ways, and the multiple viewing windows (100) are distributed at intervals along the length direction of the receiving cavity (10a).

3. The scraper according to claim 1, characterized in that, It also includes a cover (4), the main body (1) is provided with an access port (101), the access port (101) is connected to the receiving cavity (10a) and the outside, and the cover (4) is used to cover the access port (101).

4. The scraper according to claim 3, characterized in that, The cover (4) includes a hinge (40) and a snap-fit ​​(41). The hinge (40) is hinged to the body (1). The snap-fit ​​(41) can swing around the hinge (40). The body (1) is provided with a slot (103) that cooperates with the snap-fit ​​(41).

5. The scraper according to claim 3, characterized in that, The main body (1) has an operation notch (102) at the access port (101), and the spare blade (3) extends at least partially through the operation notch (102) out of the receiving cavity (10a); The cover (4) includes a protrusion (42) with a receiving groove (420). When the cover (4) closes the access port (101), the protrusion (42) is embedded in the operating notch (102), and the spare blade (3) is at least partially placed in the receiving groove (420).

6. The scraper according to claim 3, characterized in that, The main body (1) or the cover (4) is provided with a hanging through hole (11).

7. The scraper according to claim 1, characterized in that, It also includes at least one magnetic element (5), which is installed inside the body (1) and is used to attract the spare blade (3) into the receiving cavity (10a).

8. The scraper according to claim 7, characterized in that, The thickness direction of the receiving cavity (10a) is the same as that of the spare blade (3); at least one of the magnetic elements (5) is disposed adjacent to the wall surface of the receiving cavity (10a) in the thickness direction.

9. The scraper according to claim 1, characterized in that, The main body (1) includes a housing (12) and a connector (13). The receiving cavity (10a) is located inside the housing (12). The housing (12) also has a mounting cavity (12a) extending along its length. The mounting cavity (12a) has an inlet and outlet (122). The connector (13) is slidably installed in the mounting cavity (12a). The connector (13) includes a mounting portion (130) for mounting a working blade (2). The working blade (2) can extend at least partially out of the mounting cavity (12a) or be received in the mounting cavity (12a) through the inlet and outlet (122).

10. The scraper according to claim 9, characterized in that, The connector (13) further includes a first button (131) and a connecting body (132), wherein the connecting body (132) connects the mounting part (130) and the first button (131) respectively; The housing (12) is provided with a guide hole (123) that connects the mounting cavity (12a) and the outside. The guide hole (123) extends along the length direction of the mounting cavity (12a), and the first button (131) is at least partially placed in the guide hole (123).

11. The scraper according to claim 10, characterized in that, The connector (13) also includes: An elastic support portion (133) is provided on the side of the connecting body (132) away from the guide hole (123) and supports the connecting body (132); A limiting protrusion (134a) is provided on the side of the connecting body (132) near the guide hole (123); The housing (12) further includes a first limiting groove (124) and a locking groove (125a), the first limiting groove (124) and the locking groove (125a) being distributed on the inner wall of the mounting cavity (12a); the first limiting groove (124) and the locking groove (125a) are spaced apart along the sliding direction of the connector (13); The elastic force of the elastic support (133) drives the limiting protrusion (134a) to engage with the first limiting groove (124) or the locking groove (125a). Pressing the first button (131) can cause the limiting protrusion (134a) to disengage from the first limiting groove (124) or the locking groove (125a).

12. The scraper according to claim 11, characterized in that, The elastic support part (133) includes a support foot (1330), a connecting end (1331) and a contact end (1332) disposed at both ends of the support foot (1330), and the support foot (1330) is inclinedly disposed on the connecting body (132); The connecting end (1331) is used to connect to the connecting body (132); The contact end (1332) is used to abut against the inner wall of the mounting cavity (12a) away from the guide hole (123) to form a support; The contact end (1332) is closer to the inlet / outlet (122) than the connection end (1331); Alternatively, the contact end (1332) may be located further away from the inlet / outlet (122) than the connection end (1331).

13. The scraper according to claim 9, characterized in that, The housing (12) further includes a first limiting part (126), which is disposed on the inner wall of the mounting cavity (12a); The connector (13) further includes a second limiting part (135) that cooperates with the first limiting part (126); When the connector (13) slides from the storage position to the working position, the second limiting part (135) cooperates with the first limiting part (126) to prevent the connector (13) from continuing to slide towards the inlet / outlet (122). At this time, the working blade (2) extends out of the mounting cavity (12a) through the inlet / outlet (122) and the scraper is in working condition. When a force perpendicular to the sliding direction is applied to at least one of the second limiting part (135) and the first limiting part (126), the second limiting part (135) can be disengaged from the first limiting part (126) to release the connector (13). When the connector (13) slides to the replacement position, the working blade (2) is in a replaceable state.

14. The scraper according to claim 13, characterized in that, The connector (13) further includes a connecting body (132), the mounting part (130) is formed at one end of the connecting body (132), the second limiting part (135) includes a fixed end (1350) and a limiting end (1351), the fixed end (1350) is connected to the connecting body (132), and the limiting end (1351) is inclined relative to the connecting body (132) and extends toward the inlet / outlet (122); the first limiting part (126) includes a second limiting groove (1260) that can engage with the limiting end (1351), when the connector (13) slides to the working position, the limiting end (1351) engages with the second limiting groove (1260); by directly or indirectly pressing the second limiting part (135), the limiting end (1351) can be disengaged from the second limiting groove (1260).

15. The scraper according to claim 14, characterized in that, It also includes a second button (6). The housing (12) is provided with a mounting through hole (1213) that connects the mounting cavity (12a) to the outside. The second button (6) is connected to the mounting through hole (1213). When the connector (13) slides to the working position, the second button (6) corresponds to the limiting end (1351). Pressing the second button (6) can cause the limiting end (1351) to disengage from the second limiting groove (1260).

16. The scraper according to claim 15, characterized in that, The connector (13) also includes a supporting protrusion (138), which is distributed on the connecting body (132). When the connector (13) is in the storage position, the supporting protrusion (138) supports the second button (6), so that the second button (6) is received in the mounting through hole (1213).

17. The scraper according to claim 4, characterized in that, The hinge part (40) includes a connecting through hole (401), and the main body (1) is provided with a rotating shaft (15), which is rotatably connected to the connecting through hole (401).

18. The scraper according to claim 17, characterized in that, The main body (1) includes a shell (12), which includes a bottom shell (120) and a top shell (121). The bottom shell (120) and the top shell (121) are fastened together to form the receiving cavity (10a). The rotating shaft (15) is disposed on the bottom shell (120) and / or the top shell (121). When the bottom shell (120) and the top shell (121) are fastened together, the rotating shaft (15) is rotatably connected to the connecting through hole (401). The housing (12) also includes a pivot reinforcement (12b) which is disposed near the pivot rod (15).

19. The scraper according to claim 18, characterized in that, The rotating shaft reinforcement (12b) includes a locking hook (1212) and a locking hook groove (1202). The locking hook (1212) is located on the top shell (121), and the locking hook groove (1202) is located on the bottom shell (120). The locking hook (1212) can be engaged with the locking hook groove (1202).

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