Plastering scraper that makes blade replacement easier

Abstract

Title of the invention: PLASTERING SQUEEGEE FACILITATING BLADE REPLACEMENT The present invention relates to the field of construction tools, and more particularly to a plastering squeegee facilitating blade replacement, comprising a squeegee body, on said squeegee body being provided a blade housing groove; a pair of end covers, said end covers being respectively disposed at the two ends of the squeegee body, at least one end cover having a blade passage opening, the lateral opening of said blade housing groove facing said blade passage opening; at least one protective cover, which is disposed inside the blade passage opening and is rotatably disposed; said protective cover having, inside the blade passage opening, an open position and a closed position.When the protective cover is pivoted to the open position, the lateral opening of the blade housing groove is opened, and when the protective cover is pivoted to the closed position, it closes the lateral opening of the blade housing groove. By positioning the protective cover on the end cover, the user does not need to disassemble the entire end cover when replacing the blade. Instead, the blade can be mounted or removed directly by opening the protective cover, thus improving the efficiency of the blade replacement process. See Figure 1 for abbreviations.

Description

Title of the invention: Plastering scraper facilitating blade replacement technical field

[0001] The present invention relates to the field of construction tools, and more particularly to a plastering squeegee that facilitates blade replacement. TECHNICAL CONTEXT

[0002] During the step of applying the paste to the construction walls, it is necessary to use a plaster scraper, by means of which a paste (including cement, lime paste, mastic, etc.) is scraped and leveled on the wall surface.

[0003] The plastering squeegee comprises a blade support, a blade and two end covers, on the blade support a blade housing groove being provided, a mounting end of the blade being inserted into said blade housing groove, a working end of the blade extending out of the blade support, the two end covers being mounted respectively at the two ends of the blade support, the end covers providing a cover and a limitation of the lateral ends of the blade housed in the blade housing groove, so that the blade is prevented from moving laterally out of the blade support.

[0004] The blade is a consumable part; after prolonged use, the working end of the blade wears down, so it is frequently necessary to replace the blade. In prior art, when replacing the blade, it is necessary to first remove one of the end covers, then laterally extract the old blade, then insert a new blade, and finally reattach the end cover.

[0005] To facilitate blade replacement, the end cover of the plastering squeegee has been improved by a protective cover being placed on the end cover. This protective cover is detachably connected to the end cover by means of a locking screw. When the protective cover is removed, the blade can be extracted without obstruction. After the protective cover is mounted on the blade holder, the cover provides a barrier and limits the lateral face of the blade. In this regard, reference may be made to the earlier patent CN211313262U — “a gripping structure for a squeegee and a profiled squeegee for architectural decoration”.

[0006] In prior art, the mounting structure in which the protective cover is mounted on the end cover by means of a locking screw has the following problems: first, dismantling the protective cover is relatively complicated, as it is necessary to completely unscrew the screw before the protective cover can be removed; second, the protective cover and the screw, if disassembled separately, are likely to be lost; third, when the protective cover is fixed to the end cover by means of the screw, the screw protrudes on the end cover, which also affects the use of the plaster scraper.

[0007] In summary, at present there are problems related to the low efficiency of mounting and dismounting the protective cover on the plastering squeegee, which affects the efficiency of blade replacement. DISCLOSURE OF THE INVENTION

[0008] The technical problem that the present invention aims to solve is as follows: to overcome the shortcomings of the prior art and to provide a plaster scraper facilitating the replacement of the blade, in order to solve the technical problem whereby the efficiency of blade replacement is low when replacing the blade in current plaster scrapers.

[0009] The technical solution adopted by the present invention to solve said technical problem is as follows:

[0010] A plaster scraper is provided to facilitate blade replacement, comprising:

[0011] a squeegee body, on said squeegee body a groove being provided blade housing intended for the installation of a blade;

[0012] a pair of end covers, said end covers being respectively disposed at the two ends of the scraper body, on at least one end cover a blade passage opening being provided, the lateral opening of said blade housing groove being oriented towards the blade passage opening;

[0013] at least one protective cover, which is disposed inside the blade passage opening and is arranged in a rotatable manner;

[0014] said protective cover having, inside the blade passage opening, an open position and a closed position, when the protective cover is pivoted towards the open position, the lateral opening of said blade housing groove is opened, and when the protective cover is pivoted towards the closed position, said protective cover closes the lateral opening of the blade housing groove.

[0015] Preferably, the rotation structure of the protective cover in the blade passage opening comprises:

[0016] a sliding space, which is provided on the end cover, an insertion opening being provided at the front end of said sliding space, said insertion opening being in communication with the blade passage opening, a notch being provided on said insertion opening, intended to allow the protective cover to be avoided when it is tilted into the open position;

[0017] said protective cover comprising an insertion part and a shielding part, the insertion part extending into the sliding space through the insertion opening, two axes of rotation being disposed on both sides of the inner end of the insertion part, said axes of rotation being capable of performing a vertical displacement movement and a rotational movement in the sliding space, when the axes of rotation move towards a lower position in the sliding space, the protective cover is capable of performing an opening tilt and a closing tilt, when the protective cover tilts into the open position, said protective cover is capable of driving the axes of rotation towards the lower position in the sliding space, while allowing the insertion part to tilt into the notch, and when the protective cover tilts into the closed position,said protective cover is capable of driving the rotation axes towards a higher position within the sliding space.

[0018] Preferably, a locking tenon is disposed on the armor part, a locking groove being provided on the side wall of the blade passage opening, when the rotation axes move towards the upper position of the sliding space, said locking tenon inserts simultaneously into the locking groove.

[0019] Preferably, an inclined surface is arranged on the end cover inside the notch, said inclined surface cooperates with the protective cover in the open position, so as to widen the opening angle of the protective cover.

[0020] Preferably, a sliding groove is provided on the surface of the mounting side of the end cover; when the end cover is connected to the end face of the squeegee body, said sliding groove and the end face of the squeegee body together form said sliding space.

[0021] Preferably, the rotation structure of the protective cover in the blade passage opening comprises:

[0022] a pair of axis holes, the two axis holes being respectively provided at the two internal ends of the blade passage opening;

[0023] a pair of pivots being arranged on the protective cover, the two pivots being respectively inserted into the axle holes, so that the protective cover is mounted in rotation in the blade passage opening;

[0024] a clipping structure, which is disposed between the protective cover and the end cover;

[0025] when the protective cover is pivoted towards the closed position, a click is formed between the protective cover and the end cover, in order to position the protective cover in the closed position.

[0026] Preferably, the blade passage opening is a stepped groove, a stepped surface adapted to the stepped groove being formed on the internal surface of the protective cover, an internal boss being formed at the lower end of the internal surface of the protective cover;

[0027] when the protective cover is in the closed position, the internal boss is located in front of the lateral opening of the blade housing groove.

[0028] Preferably, said clipping structure includes a clipping groove and a clipping boss;

[0029] said clipping groove is disposed on the end cover or on the protective cover;

[0030] said clip boss is disposed on the protective cover or on the end cover.

[0031] Preferably, said pivot and the protective cover form a single-piece structure;

[0032] an inclined guide surface is provided on the pivot.

[0033] Preferably, an anti-slip ridge is disposed at the lower end of said protective cover.

[0034] Preferably, the beneficial effects of the present invention are:

[0035] Thanks to the blade passage opening provided on the end cover, the user does not need to completely remove the end cover when replacing the blade; he can directly mount and dismount the blade through said blade passage opening, which improves the efficiency of blade replacement.

[0036] The protective cover is rotatably mounted on the end cover, which facilitates closing the blade passage opening. Opening and closing said blade passage opening is thus particularly easy, making blade replacement on the plaster scraper more convenient. DESCRIPTION OF FIGURES

[0037] The present invention will be described in detail below in combination with figures and examples of embodiment.

[0038] [Fig. 1] is a schematic view of the plastering squeegee according to the first embodiment (protective cover in closed position);

[0039] [Fig.2] is a schematic view of the plastering squeegee according to the first embodiment (protective cover in open position);

[0040] [Fig.3] is a schematic view of the raclette body according to the first embodiment;

[0041] [Fig.4] is a schematic view of the inner side of the end cover according to the first embodiment;

[0042] [Fig.5] is a schematic view of the external side of the end cover according to the first embodiment;

[0043] [Fig.6] is a schematic view of the protective cover according to the first embodiment;

[0044] [Fig.7] is a schematic view of the protective cover arranged in the end cover according to the first embodiment;

[0045] [Fig.8] is a schematic view of the plaster scraper according to the first embodiment (without protective cover);

[0046] [Fig.9] is a schematic view of the plastering squeegee according to the second embodiment;

[0047] [Fig. 10] is a schematic view of the plaster scraper according to the second embodiment (without protective cover);

[0048] [Fig. 11] is a schematic view of the end cover according to the second embodiment;

[0049] [Fig. 12] is a schematic view of the protective cover according to the second embodiment;

[0050] [Fig. 13] is a schematic view of the protective cover according to the second embodiment;

[0051] In which: 1 - scraper body, 11 - rib, 12 - blade housing groove;

[0052] 2 - end cover, 21 - blade passage opening, 22 - inclined surface, 23 - internal stop, 241 - retaining step, 242 - retaining end face, 25 - locking groove, 26 - axle hole;

[0053] 31 - internal groove, 32 - external groove, 33 - notch;

[0054] 4 - protective cover, 41 - insertion part, 42 - shielding part, 43 - shaft rotation, 44 - anti-slip ridge, 45 - locking tenon, 46 - internal boss, 47 - pivot, 48 - inclined guide surface;

[0055] 51 - clipping groove, 52 - clipping boss;

[0056] 6 - blade. DETAILED DESCRIPTION OF THE INVENTION

[0057] In order to explain in more detail the technical means adopted by the present invention to achieve the intended objective and their effects, the specific embodiments, structure, characteristics and associated effects of the present invention will be described below in detail with reference to the attached figures.

[0058] Example of implementation 1

[0059] As illustrated in Figures 1 to 8, the plaster scraper facilitating blade replacement comprises:

[0060] a squeegee body 1, on said squeegee body 1 being provided a blade housing groove 12 intended for the installation of a blade 6;

[0061] a pair of end covers 2, said end covers 2 being respectively disposed at the two ends of the scraper body 1, on at least one end cover 2 a blade passage opening 21 being provided, the lateral opening of the blade housing groove 12 being oriented towards the blade passage opening 21;

[0062] at least one protective cover 4, which is disposed inside the blade passage opening 21 and is arranged in a rotatable manner;

[0063] said protective cover 4 having, inside the blade passage opening 21, an open position and a closed position, when the protective cover 4 is pivoted towards the open position, the lateral opening of the blade housing groove 12 is opened, and when the protective cover 4 is pivoted towards the closed position, said protective cover 4 closes the lateral opening of the blade housing groove 12.

[0064] In the present embodiment, the pair of end covers 2 adopted for the squeegee may comprise either two end covers 2 both provided with a blade passage opening 21, or a single end cover 2 provided with a blade passage opening 21, the other end cover 2 being without a blade passage opening 21.

[0065] As illustrated in [Fig. 3], the squeegee body 1 comprises a gripping portion and a working portion, both being formed as a single piece. The squeegee body 1 is formed by injection molding or one-piece molding, and the blade housing groove 12 is provided in the working portion of the squeegee body 1.

[0066] In the present embodiment, the end cover 2 is fixed to the end face of the scraper body 1 by means of several locking screws.

[0067] More specifically, as an optional embodiment, as illustrated in Figures 4 to 8, the rotation structure of the protective cover 4 in the blade passage opening 21 comprises:

[0068] a sliding space, which is provided on the end cover 2, an insertion opening being provided at the front end of the sliding space, said insertion opening being in communication with the blade passage opening 21, a notch 33 being provided on said insertion opening, intended to allow the protective cover 4 to be avoided when it is tilted into the open position;

[0069] said protective cover 4 comprising an insertion part 41 and a shielding part 42, the insertion part 41 extending into the sliding space through the insertion opening, two rotation axes 43 being disposed on the two sides of the inner end of the insertion part 41, said rotation axes 43 being able to perform a vertical displacement movement and a rotational movement in the sliding space; as shown in [Fig.[l] when the rotation axes 43 move towards a lower position in the sliding space, the protective cover 4 is able to perform an opening tilt and a closing tilt; when the protective cover 4 tilts towards the open position, the insertion part 41 tilts into the notch 33; when the protective cover 4 tilts towards the closed position, said protective cover 4 drives the rotation axes 43 towards the lower position in the sliding space, and at the same time, said protective cover 4 drives the rotation axes 43 towards the upper position in the sliding space.

[0070] In this embodiment, as illustrated in [Fig.6], the rotation axes 43 are in one piece with the protective cover 4.

[0071] In this embodiment, the protective cover 4 generally has a T-shaped structure, produced by injection, as illustrated in [Fig.6], the transverse branch constituting the shielding part 42 and the longitudinal branch constituting the insertion part 41.

[0072] More specifically, as an optional embodiment, as illustrated in Figures 4 to 6, a locking tenon 45 is disposed on the shielding part 42, a locking groove 25 being provided on the side wall of the blade passage opening 21, when the rotation axes 43 of the protective cover 4 move towards the upper position of the sliding space, said locking tenon 45 inserts simultaneously into the locking groove 25.

[0073] As illustrated in [Fig. 7], an interference fit is formed between the locking tenon 45 and the locking groove 25 during insertion, which ensures that the protective cover 4 can be locked after being inserted in the end cover 2, thus preventing the protective cover 4 from loosening.

[0074] In the present embodiment, the locking tenon 45 is a rectangular projection, and the locking groove 25 is a corresponding rectangular groove.

[0075] More specifically, as an optional embodiment, the direction of movement of the protective cover 4 on the end cover 2 coincides with the direction of the thickness of the blade 6 in the blade housing groove 12.

[0076] With reference to [Fig. 1], the so-called blade thickness direction 6 corresponds to the vertical direction in [Fig. 1]. When the protective cover 4 tilts downwards to close the blade passage opening 21, it then moves upwards to insert itself into the end cover 2, thereby enabling the end cover 2 to snap into place.

[0077] According to the actual design requirements of the plastering squeegee, the direction of rotation and translation of the protective cover 4 on the squeegee can be adjusted as needed.

[0078] More specifically, as an optional embodiment, as illustrated in [Fig.5], an inclined surface 22 is arranged on the end cover 2 inside the notch 33, said inclined surface 22 cooperates with the protective cover 4 in the open position, so as to widen the opening angle of the protective cover 4.

[0079] With a standard notch 33, the rotation axes 43 of the protective cover 4 only allow a 90° tilt. In this case, although the blade 6 can be removed normally from the blade housing groove 12, the protective cover 4 may still interfere with the blade 6. Thanks to the presence of the inclined plane 22, the protective cover 4 can continue its outward rotation; in other words, the tilt angle of the protective cover 4 exceeds 90°, becoming an obtuse angle. The larger the opening of the protective cover 4, the less it interferes with the removal of the blade 6.

[0080] More specifically, as an optional embodiment, as illustrated in Figures 4 to 7, a sliding groove is provided on the surface of the mounting side of the end cover 2, when the end cover 2 is connected to the end face of the squeegee body 1, the sliding groove and the end face of the squeegee body 1 together form the sliding space.

[0081] This embodiment facilitates the design of the sliding space on the squeegee. The end cover 2 and the end of the squeegee body 1 are fixed by bolts. During the assembly of the end cover 2 and the squeegee body 1, the rotation axes 43 of the protective cover 4 are first placed in the sliding groove; once the assembly of the end cover 2 is complete, the two axes The rotation of the protective cover 4 automatically finds itself in the sliding space.

[0082] In one embodiment of the sliding space, the entire sliding space can also be formed integrally in the end cover 2, i.e. the sliding space is directly molded into the end cover 2 without using the end of the scraper body 1.

[0083] As illustrated in [Fig. 4], the sliding groove of the end cover 2 comprises an internal groove 31 and an external groove 32. An internal stop 23 is provided in the internal groove 31; this internal stop 23 is configured to limit the insertion depth of the protective cover 4 in the sliding space. The two sides of the external groove 32 form retaining steps 241; the retaining steps 241 are configured to cooperate with the ends of the rotation axes 43, in order to prevent the protective cover 4 from coming out of the sliding space. The notch 33 is formed in the external groove 32. The two sides of the internal groove 31 and external groove 32 form retaining end faces 242; the retaining end faces 242 are configured to prevent axial displacement of the ends of the rotation axes.The entire sliding space is therefore made up of the retaining steps 241, the retaining end faces 242, the internal stop 23 and the end of the scraper body 1. .

[0084] As illustrated in [Fig. 7], the protective cover 4 moves to the upper position of the sliding space. In this state, the protective cover 4 then comes into contact with the internal stop 23. At this point, the insertion part 41 is entirely within the sliding space, preventing the protective cover 4 from pivoting outwards. The protective cover 4 is then in a self-locking state.

[0085] As illustrated in Figures 3 and 8, in certain embodiments, in order to reduce manufacturing costs, the interior of the squeegee body 1 is hollowed out and reinforced by several ribs 11. The ends of the ribs 11 are flat faces that constitute an additional internal surface area of ​​the sliding space. Since the rotation axes 43 of the protective cover 4 are located between the end cover 2 and the squeegee body 1, the number of ribs 11 situated in the area of ​​the squeegee body 1 near the protective cover 4 is increased. The additional ribs 11 serve as supports for the rotation axes 43 of the protective cover 4; when the protective cover 4 is in the open position, the rotation axes 43 of the protective cover 4 come into direct contact with the additional ribs 11.

[0086] In the present embodiment, as illustrated in [Fig.3], the additional ribs 11 of the scraper body 1 are arranged in a cross lattice.

[0087] In the present embodiment, among the two end covers 2 located on either side of the squeegee body 1, it is sufficient that one of the end covers 2 is provided with a blade passage opening 21; the other end cover 2 adopts a traditional structure, that is to say that after the end cover 2 is installed on the side of the squeegee body 1, it directly covers the blade slot 12.

[0088] The plastering squeegee according to this embodiment operates as follows when replacing the blade 6: referring to [Fig. 1], the user first moves the protective cover 4 downwards, bringing its rotation axes 43 from the inner groove to the outer groove. The protective cover 4 then tilts upwards, opening the blade passage opening 21, as shown in [Fig. 2]. The user can then pull to the left to remove the old blade 6 and replace it with a new one, insert the new blade 6 into the blade housing groove 12, and then tilt the protective cover 4 downwards to close the blade passage opening 21. Next, the protective cover 4 is moved upwards to bring the rotation axes 43 of the protective cover 4 to the upper position of the sliding space, thus ensuring the self-locking of the protective cover 4.The protective cover 4 then effectively limits the movement of the blade 6 in the blade housing groove 12.

[0089] In the plastering squeegee according to this embodiment, the protective cover 4 remains permanently attached to the squeegee. Opening and closing the protective cover 4 requires no auxiliary tools and is very simple to perform.

[0090] The installation of the protective cover 4 is based on the assembly structure between the end cover 2 and the squeegee body 1. The modifications to the external structure of the squeegee are minimal: it is sufficient to add the blade passage opening 21 and the sliding space to the end cover 2, and a few additional ribs 11 to the squeegee body 1.

[0091] Example of implementation 2

[0092] In the present embodiment, based on embodiment 1, the difference lies in the redesign of the rotation structure of the protective cover 4 in the blade passage opening 21. More specifically, as follows:

[0093] As illustrated in Figures 9 to 13, the plaster scraper facilitating blade replacement comprises:

[0094] a squeegee body 1, on said squeegee body 1 being provided a blade housing groove 12 intended for the installation of a blade 6;

[0095] a pair of end covers 2, said end covers 2 being respectively disposed at the two ends of the scraper body 1, on at least an end cover 2 being provided with a blade passage opening 21, the lateral opening of the blade housing branch 12 being oriented towards the blade passage opening 21;

[0096] a pair of protective covers 4, which are arranged inside the blade passage opening 21 and are arranged in a rotatable manner;

[0097] said protective cover 4 having, inside the blade passage opening 21, an open position and a closed position, when the protective cover 4 is pivoted towards the open position, the lateral opening of the blade housing groove 12 is opened, and when the protective cover 4 is pivoted towards the closed position, said protective cover 4 closes the lateral opening of the blade housing groove 12.

[0098] More specifically, as an optional embodiment, as illustrated in Figures 9 to 13, the rotation structure of the protective cover 4 in the blade passage opening 21 comprises:

[0099] a pair of axis holes 26, the two axis holes 26 being respectively arranged at the two internal ends of the blade passage opening 21;

[0100] a pair of pivots 47 being arranged on the protective cover 4, the two pivots 47 being respectively inserted into the axis holes 26, so that the protective cover 4 is mounted in rotation in the blade passage opening 21;

[0101] a clipping structure, which is disposed between the protective cover 4 and the end cover 2;

[0102] when the protective cover 4 is pivoted towards the closed position, a click is formed between the protective cover 4 and the end cover 2, in order to position the protective cover 4 in the closed position.

[0103] More specifically, as an optional embodiment, as illustrated in [Fig. 1 1], the blade passage opening 21 is a stepped groove, the blade passage opening 21 has a step, a stepped surface adapted to the stepped groove being formed on the internal surface of the protective cover 4, an internal boss 46 being formed at the front end of the internal surface of the protective cover 4;

[0104] when the protective cover 4 is in the closed position, the internal boss 46 is located in front of the lateral opening of the blade housing groove 12.

[0105] In the present embodiment, the end cover 2 cooperates with the protective cover 4 via the step groove, making the installation of the protective cover 4 on the end cover 2 more stable and reliable.

[0106] In this embodiment, the design of the internal boss 46 allows that, when the protective cover 4 covers the blade housing groove 12, the protective cover 4 can come directly against the opening lateral, so that the protective cover 4 ensures a more snug cover of the blade housing groove 12.

[0107] In this embodiment, the angle of rotation of the protective cover 4 on the end cover 2 is greater than or equal to 90°, in order to ensure that, when the protective cover 4 is in the open position, the free end of the protective cover 4 does not interfere with the insertion or removal of the blade 6 in the blade housing groove 12.

[0108] More specifically, as an optional embodiment of this embodiment, as illustrated in Figures 11 and 12, the clipping structure includes a clipping groove 51 and a clipping boss 52; the clipping groove 51 is disposed on the end cover 2; the clipping boss 52 is disposed on the protective cover 4. When the protective cover 4 pivots towards the closed position, the clipping boss 52 fits precisely into the clipping groove 51, so as to position the protective cover 4 and limit its rotation in the closed position.

[0109] In another embodiment, the clipping groove 51 can also be arranged on the protective cover 4, while the clipping boss 52 is arranged on the end cover 2, the two embodiments producing identical technical effects.

[0110] More specifically, as an optional embodiment of this embodiment, as illustrated in Figures 12 and 13, the pivot 47 and the protective cover 4 are made in a single block structure; the pivot 47 is provided with an inclined guide surface 48.

[0111] The design of the inclined guide surface 48 facilitates the press-fitting of the protective cover 4 into the blade passage opening 21. Since the blade passage opening 21 is a stepped groove, the protective cover 4 is generally housed within said blade passage opening 21. During installation between the protective cover 4 and the blade passage opening 21, the protective cover 4 is pressed into the blade passage opening 21. If the pivot 47 were cylindrical, press-fitting would be more difficult. By positioning the inclined guide surface 48 on the pivot 47, installing the protective cover 4 into the blade passage opening 21 is made easier. Furthermore, to facilitate the insertion of the protective cover 4, the pivot hole 26 in the blade passage opening 21 is oblong.

[0112] More specifically, as an optional embodiment of this embodiment, as illustrated in [Fig. 12], the lower end of the protective cover 4 is provided with an anti-slip ridge 44.

[0113] The design of the anti-slip ridge 44 makes it easier for the operator to open the protective cover 4. When the protective cover 4 is in position When closed, the anti-slip ridge 44 protrudes forward from the squeegee body 1, so that the operator can open the protective cover 4 with a simple manual pull.

[0114] How to use the plastering squeegee of this embodiment:

[0115] when it is necessary to disassemble or assemble the blade 6, open the protective cover 4, then insert or extract the blade 6 into the blade housing groove 12; after assembling or disassembling the blade 6, rotate the protective cover 4 towards the closed position, the clipping boss 52 cooperating with the blade housing groove 12 in order to position and fix the protective cover 4, and to prevent unintentional opening.

[0116] The foregoing constitutes only preferred embodiments of the present invention and in no way constitutes a formal limitation of the invention. Although the invention has been disclosed using the aforementioned preferred embodiments, this does not limit the present invention. Any person competent in the field may, without departing from the scope of the technical solution of the present invention, make slight modifications or adaptations to the disclosed technical content to obtain equivalent embodiments. All simple modifications, variations, and adaptations made to the aforementioned embodiments, in accordance with the technical essence of the present invention and without departing from the scope of the technical solution of the present invention, fall within the scope of the present invention.

Claims

Demands

1. Plastering squeegee facilitating blade replacement, characterized in that it comprises: a squeegee body (1), on said squeegee body (1) having a blade housing groove (12) for the installation of a blade (6); a pair of end covers (2), said end covers (2) being respectively disposed at the two ends of the squeegee body (1), on at least one end cover (2) having a blade passage opening (21), the lateral opening of said blade housing groove (12) being oriented towards the blade passage opening (21); at least one protective cover (4), which is disposed inside the blade passage opening (21) and is rotatably disposed;said protective cover (4) having, inside the blade passage opening (21), an open position and a closed position, when the protective cover (4) is pivoted towards the open position, the lateral opening of the blade housing groove (12) is opened, and when the protective cover (4) is pivoted towards the closed position, said protective cover (4) closes the lateral opening of the blade housing groove (12).

2. Plastering squeegee facilitating blade replacement according to claim 1, characterized in that: the rotation structure of the protective cover (4) in the blade passage opening (21) comprises: a sliding space, which is provided on the end cover (2), an insertion opening being provided at the front end of said sliding space, said insertion opening being in communication with the blade passage opening (21), a notch (33) being provided on said insertion opening, intended to allow the protective cover (4) to be avoided when it is tilted into the open position; said protective cover (4) comprising an insertion portion (41) and a shielding portion (42), the insertion portion (41) extending into the sliding space through the insertion opening, two rotation axes (43) being disposed on the two sides of the inner end of the insertion part (41), said rotation axes (43) being able to perform a vertical displacement movement and a rotational movement in the sliding space, when the rotation axes (43) move towards a lower position of the sliding space, the protective cover (4) is able to perform an opening tilt and a closing tilt, when the protective cover (4) tilts into the open position, said protective cover (4) is able to drive the rotation axes (43) towards the lower position of the sliding space, while allowing the insertion part (41) to tilt into the notch (33), and when the protective cover (4) tilts into the closed position, said protective cover (4) is able to drive the rotation axes (43) towards a higher position of the sliding space.

3. Plaster scraper facilitating blade replacement according to claim 2, characterized in that: a locking tenon (45) is disposed on the shielding part (42), a locking groove (25) being provided on the side wall of the blade passage opening (21), when the rotation axes (43) move towards the upper position of the sliding space, said locking tenon (45) simultaneously inserts into the locking groove (25).

4. Plastering squeegee facilitating blade replacement according to claim 2, characterized in that: an inclined surface (22) is arranged on the end cover (2) inside the notch (33), said inclined surface (22) cooperates with the protective cover (4) in the open position, so as to widen the opening angle of the protective cover (4).

5. Plastering squeegee facilitating blade replacement according to claim 2, characterized in that: a sliding groove is provided on the surface of the mounting side of the end cover (2), when the end cover (2) is connected to the end face of the squeegee body (1), said sliding groove and the end face of the squeegee body (1) together form said sliding space.

6. Plastering scraper facilitating blade replacement according to claim 1, characterized in that: The rotation structure of the protective cover (4) in the blade passage opening (21) comprises: a pair of axle holes (26), the two axle holes (26) being respectively provided at the two internal ends of the blade passage opening (21); a pair of pivots (47) being disposed on the protective cover (4), the two pivots (47) being respectively inserted into the axle holes (26), so that the protective cover (4) is mounted for rotation in the blade passage opening (21); a clipping structure, which is disposed between the protective cover (4) and the end cover (2); when the protective cover (4) is pivoted towards the closed position, a snap is formed between the protective cover (4) and the end cover (2), in order to position the protective cover (4) in the closed position.

7. Plastering squeegee facilitating blade replacement according to claim 6, characterized in that: the blade passage opening (21) is a stepped groove, a stepped surface adapted to the stepped groove being formed on the internal surface of the protective cover (4), an internal boss (46) being formed at the lower end of the internal surface of the protective cover (4); when the protective cover (4) is in the closed position, the internal boss (46) is located in front of the lateral opening of the blade housing groove (12).

8. Plastering squeegee facilitating blade replacement according to claim 6, characterized in that: said clipping structure comprises a clipping groove (51) and a clipping boss (52); said clipping groove (51) is disposed on the end cover (2) or on the protective cover (4); said clipping boss (52) is disposed on the protective cover (4) or on the end cover (2).

9. Plastering scraper facilitating blade replacement according to claim 6, characterized in that: said pivot (47) and protective cover (4) form a single-piece structure; an inclined guide surface (48) is provided on the pivot (47).

10. Plastering scraper facilitating blade replacement according to claim 1, characterized in that: an anti-slip ridge (44) is disposed at the lower end of said protective cover (4).

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