Patent Description:
Ceramic tile inlaying processes often used in the building decoration industry mainly use the traditional manual paving method. The common method for paving floor ceramic tiles is generally divided into a dry laying method and a wet laying method.

The wet laying method uses cement mortar or the like as an adhesive to directly paste the ceramic tile to a wall or a floor. The shortcomings lie in that the flatness and fullness of the paved ceramic tile are relatively poor, and the viscosity thereof is also poor, so that it can only be applied to the pasting of small ceramic tiles, and has a large limitation; and, the workload in the pasting process is relatively large, the technical requirements for the construction personnel are high, and the construction efficiency is low.

The dry laying method directly lays ceramic tiles of a larger size and area, such as floor tiles, on a flat and dried floor. The shortcomings lie in that the thickness of the required laying materials is relatively great, the requirements for the floor flatness are higher, it is necessary to use a sufficient amount of cement to level the entire floor, which requires a high technical level for the construction personnel and the phenomenon of waste of materials is more serious, and if the flatness is not enough, it is easy to produce a hollowing phenomenon, which affects the quality of the laying; and it is necessary to wait for the cement to solidify and dry before starting to lay the ceramic tile, and the ceramic tile further needs to be tamped with a rubber hammer after laying, so tat the process is complicated, the workload is large, the laying speed is slow, and the construction efficiency is low.

<CIT> discloses a horizontal floor tile laying positioning device which comprises a positioning device body consisting of a positioning body and a wedge-shaped block in a matched mode. The positioning body is formed by connecting an elastic plate and a stress plate; one end of the stress plate is connected with the middle of the elastic plate; two ends of the elastic plate bend to one side of the stress plate; an insertion hole into which the wedge-shaped block is inserted is formed in the stress plate; one side of the wedge-shaped block is a plane; one surface, which is opposite to the plane, of the wedge-shaped block is an inclined surface; convex teeth are arranged on the inclined surface; a breakage slot through which the stress plate and the elastic plate are broken easily is formed in one end, which is close to the elastic plate, of the stress plate.

<CIT> discloses an auxiliary device for the installation of plate-shaped products for covering floors and/or walls comprising: a first element having: a substantially flat base body for supporting two or more adjacent plate-shaped products and a gripping body which is associated substantially at right angles with the base body, the base body being suited to support the plate-shaped products from opposite sides of the gripping body; a second element associable with the gripping body for fastening the plate-shaped products between the base body and the second element to define the coplanarity of the plate-shaped products; and screw connection means suited to allow the coupling by screwing of the second element on the first element around a rotation axis substantially at right angles to the base body.

<CIT> discloses a self-leveling and separation structure for ground bricks comprising a leveling drawing frame, a horizontal leveling wedge and a leveling drawing frame base, wherein the leveling drawing frame is connected with the leveling drawing frame base; the horizontal leveling wedge is matched with the leveling drawing frame base. An adjusting hole is provided in the middle of the leveling drawing frame, and the upper portion of the leveling drawing frame is a drawing part,, and the lower portion of the leveling drawing frame is connected with the leveling drawing frame base by a thin wall connecting portion.

<CIT> discloses a ceramic tile leveler clamp comprising a first pressing arm, a second pressing arm, a first handle part and a second handle part. The first pressing arm is hinged with the second pressing arm. The surface of the first pressing arm is provided with a guide groove. The side of the first pressing arm is provided with a plurality of positioning jacks. The first pressing arm is provided with a positioning mechanism, which comprises a transverse baffle and an adjusting rod. The transverse baffle is arranged on the first pressing arm and is provided with a guide block adapted to the guide groove. The adjusting rod is arranged on the transverse baffle, on the same side as the positioning jacks, and is passed through the transverse baffle then inserted into the positioning jack. The transverse baffle is provided with a square groove, the square groove is provided with a hexagonal nut for interference fit with the square groove, and the adjusting rod is matched with the hexagonal nut thread. The side opposite to the adjusting rod on the transverse baffle is provided with a clamping groove for clamping the flattening wedge; the second pressing arm is provided with a push block corresponding to the clamping groove to push the flattening wedge.

Thus, pliers according to the preamble of claim <NUM> are known from said document.

<CIT> discloses a system including receivers and wedges. Each receiver has a planar element and a hook extending from the planar element in perpendicular relation. The hook is disposed as a tile spacer between a pair of tiles. The planar element is disposed beneath the tiles. Each wedge: has a clamping surface and a ribbed gripping surface orientated in angular relation to one another to meet in an edge; in use, extends through the aperture of a receiver such that: the planar surface is positioned in abutting relation against the tiles; and the hook is resiliently deformed, to provide for a clamped engagement of the tiles between the planar surface and the planar element, to provide for substantially coplanar relation; the gripping surface grips the receiver, to resist withdrawal of the wedge and maintain the clamped engagement until the mortar has cured. The improvement comprises an arcuate arrangement of the ribs.

<CIT> discloses a firefighter pocket tool achieving its objectives by combining the functional features of several traditional tools (slip groove pliers of the curved jaw type, <NUM> in <NUM> screwdriver, spanner wrench, gas shut off tool and a striking tool) onto a shared single structure. The structure of the firefighter pocket tool comprises a pair of slip groove plier members each having a jaw portion, a joint portion and a handle portion, a pivotal bolt, nut and spring member. The upper jaw of the slip groove pliers is of the curved jaw type. Upon the "upper" rear portion of the pliers' "upper" jaw's head there is formed a protrusion that forms a striking surface and a hook and claw. The hook and claw are located so as to allow it to be used as a spanner for rocker lug type and similar fire hose couplings. As this same plier member crosses over the other plier member, it forms a plurality of arcuate adjustable channels with which the arcuate protuberance from the other plier member is engaged. Protruding from the top or rear handle (just above the gripping area) is another protrusion. This protrusion is of a rectangular shape. In the middle of this protrusion is a loop in the shape slightly larger than standard natural gas shut off valves. Two independently sized hexagonal open shafts that form the handles and nut-driver/bit holders. The spanner hook and claw could also be used to operate valves (such as smaller gas supply shut offs). The gas shut off loop can also be used as a guard for fingers when the tool is being used as a striking implement.

<CIT> discloses a manually operable tool to knock out identification slugs from the heads of keys such as ignition and door keys for automotive vehicles while the keys are mounted upon a key ring passing through holes in said slugs, the tool comprising a pair of jaws on handles pivotally connected adjacent the jaws, one jaw having a seat to position the end portion of the head of a key which is beyond the slug and the other jaw having a pair of spaced lugs positioned to straddle the key ring and engage the opposite portions of the slug which are on opposite sides of the hole in said slug to punch said slug from said head of the key when said jaws are moved toward each other.

<CIT> discloses a pliers-type hand tool for assembling a cable fitting to a manual operable gearshift mechanism by use of a spring metal clip retainer. The pliers-like hand tool is provided having first and second lever members each having handle portions and a jaw portion. The lever members cross over each other at a pivotal connection and are operative to open and close the jaw portions. The first lever member jaw is in the form of a U-shaped lower jaw providing a pair of horizontally disposed prongs defining a notch therebetween. Each of the prongs has an arcuate depression adapted to receive an associated cylindrical portion of the cable conduit fitting with the notch straddling a cable slotted flange of the gearshift mounting base. The second lever member upper jaw provides a die member having a right-angled cut-out defining a horizontal shoulder portion and a coextensive flank portion.

<CIT> discloses a ceramic tile leveler clamp comprising a clamp body, which comprises an upper handle and a lower handle. The upper handle comprises a head connecting block, the upper surface of the handle head connecting block is an inclined plane, an adjusting groove is arranged on the inclined plane, the right side of the handle head connecting block is connected with an upper handle bar, and the left side of the bottom side of the handle head connecting block is connected with a pressure back arm, a bolt hole An is arranged on the pressure back arm, and the bottom left side of the pressure back arm is provided with a retaining block, and the upper handle is a primary injection molding. An adjusting screw is arranged in the adjusting groove on the inclined plane of the handle head connecting block of the upper handle, and the adjusting screw sleeve is provided with a gasket An and a spring A; the lower handle is composed of a lower handle rod and a lower handle bar, and a number of square groove teeth are arranged at the bottom of the surface of the lower handle bar.

There is a need in the market for a device capable of assist in ceramic tile laying, which can quickly achieve ceramic tile leveling and improve the construction efficiency.

An object of the present invention is to provide a ceramic tile leveling and laying device, which solves the problems of the prior art, such as complicated leveling and laying processes, low laying efficiency, and high technical requirements for operators.

In order to solve the above technical problems, the present invention provides a ceramic tile leveling and laying system, comprising: a ceramic tile leveling bracket, which is disposed at the junction between two adjacent ceramic tiles; an insertion block having one end inserted into an insertion block through hole of the ceramic tile leveling bracket; and the pushing and clamping pliers for pushing and clamping the insertion block to the insertion block through hole such that an insertion block bottom surface is tangent to upper surfaces of the two ceramic tiles.

In order to solve the above technical problems, the present invention also provides a ceramic tile leveling bracket, comprising: a pad for supporting bottom surfaces of two adjacent ceramic tiles; an insert protruding from a center line of an upper surface of the pad, for being inserted into a gap between the two adjacent ceramic tiles; and a breakable sheet located at a lower portion of the insert and adjacent to the pad; wherein the insert comprises: an insertion block through hole which penetrates the insert and into which an insertion block is inserted; and/or a bayonet disposed on a side edge of the insert on one or either side , and having a height greater than the height of the sheet.

Further, in various embodiments, the insert further comprises a hook-shaped engagement block disposed on a side edge of the insert on one or either side and protruding toward the bayonet; wherein the bottom of the bayonet is arc-shaped, and a portion of the bayonet that is close to the hook-shaped engagement block forms a hook-shaped bayonet portion.

Further, in various embodiments, the insert comprises a linear groove recessed from a surface of the insert on one or either side, the bottom of the linear groove being the sheet.

Further, in various embodiments, a bottom surface of the pad is an arc-shaped surface, which is part of a cylindrical side surface; and two ends of the pad extend upward from the middle of the bottom surface to make contact with the bottom surfaces of the ceramic tiles.

Further, in various embodiments, the pad comprises: reinforcing ribs disposed at the tops of the two ends of the pad; and/or a pad through hole which penetrates the pad.

Further, in various embodiments, the longitudinal section of the insertion block is wedge-shaped, which comprises: an insertion block bottom surface, which is a plane; an insertion block top surface, which is an inclined plane and forms an acute angle with the insertion block bottom surface; and two or more serrations protruding from the insertion block top surface and arranged in the same straight line, wherein each serration comprises a vertical serration surface and an inclined serration surface, and the vertical serration surface is perpendicular to the insertion block bottom surface.

In order to solve the technical problem of inserting and clamping the insertion block to the insertion block through hole, the present invention also provides pushing and clamping pliers, comprising: a first component, comprising a first clamping portion and a first handheld portion; a second component, comprising a second clamping portion and a second handheld portion; and a pivot via which the second clamping portion is rotatably connected to the first clamping portion; a first clamping block disposed at a top end of the first clamping portion; a second clamping block disposed at a top end of the second clamping portion and arranged opposite the first clamping block; a clamping groove recessed from an inner side wall of the first clamping block, with the direction of an opening of the groove facing the second clamping block; and a clamping through groove penetrating through the second clamping block and disposed opposite the clamping groove.

Further, in various embodiments, the pushing and clamping pliers further comprise a withdraw device for damaging the sheet of the ceramic tile leveling bracket to remove the portion of the insert above the sheet.

Further, in various embodiments, the withdraw device comprises: a hook angled portion protruding in a barb shape from an outer side wall of the first clamping block; and a rounded portion disposed at a joint between a side wall and the top of the second clamping block; or, the withdraw device comprises: a hook angled portion protruding in a barb shape from an outer side wall of the second clamping block; and a rounded portion disposed at a joint between a side wall and the top of the first clamping block.

Further, in various embodiments, the pushing and clamping pliers further comprise clamping teeth disposed on an inner side face of the first clamping block and disposed opposite the second clamping block, and/or disposed on an inner side face of the second clamping block and disposed opposite the first clamping block.

Further, in various embodiments, the pushing and clamping pliers further comprise an elastic member having one end connected to the first clamping portion and the other end connected to the second clamping portion, or having one end connected to the first handheld portion and the other end connected to the second handheld portion.

Further, in various embodiments, the pushing and clamping pliers further comprise: a first guiding post protruding from a side face of the first clamping portion; and a second guiding post protruding from a side face of the second clamping portion and disposed opposite the first guiding post; wherein the elastic member is a coil spring, which has one end sheathed on the first guiding post, and the other end sheathed on the second guiding post.

Further, in various embodiments, the pushing and clamping pliers further comprise: a first guiding post protruding from a side face of the first handheld portion; and a second guiding post protruding from a side face of the second handheld portion and disposed opposite the first guiding post; wherein the elastic member is a coil spring, which has one end sheathed on the first guiding post, and the other end sheathed on the second guiding post.

Further, in various embodiments, the pushing and clamping pliers further comprise a locking device for switching the pushing and clamping pliers between opened and closed states, wherein when the locking device is locked, the pushing and clamping pliers are in the closed state; and when the locking device is unlocked, the pushing and clamping pliers are in the opened state.

Further, in various embodiments, the pushing and clamping pliers further comprise: a first bent portion, which is part of the first clamping portion and is sheathed outside the pivot; and a second bent portion, which is part of the second clamping portion and is sheathed outside the pivot.

Further, in various embodiments, the locking device comprises: a locking groove disposed on an outer side wall of the first bent portion; a locking member rotatably fitted to a surface of the end of the second clamping portion and disposed opposite the locking groove; and a blocking block disposed on a surface of the end of the first clamping portion and disposed opposite the second bent portion, wherein the blocking block comes into contact with an outer side wall of the second bent portion when the opening angle of the pushing and clamping pliers is at the maximum.

Further, in various embodiments, the locking device comprises: a locking groove disposed on an outer side wall of the second bent portion; a locking member rotatably fitted to a surface of the end of the first clamping portion and disposed opposite the locking groove; and a blocking block disposed on a surface of the end of the second clamping portion and disposed opposite the first bent portion, wherein the blocking block comes into contact with an outer side wall of the first bent portion when the opening angle of the pushing and clamping pliers is at the maximum.

Further, in various embodiments, the locking member comprises: a locking member body rotatably connected to the end of the first clamping portion or the second clamping portion via a second pivot; a locking engagement block protruding from a surface of the locking member body; and a tab protruding from the surface of the locking member body to drive the locking member body to rotate.

Further, in various embodiments, the locking device is locked when the locking engagement block is engaged into the locking groove; and the locking device is unlocked when the locking engagement block is disengaged from the locking groove.

The present invention has the advantages that, by providing a ceramic tile leveling bracket, pushing and clamping pliers and a ceramic tile leveling and laying system, in the ceramic tile laying process, the ceramic tile leveling bracket and the insertion block are used to support the junction between two adjacent ceramic tiles, so that the upper surfaces of multiple ceramic tiles in the same area are kept on the same plane, the operation is simple and convenient, and the laying efficiency and the leveling quality are effectively improved, thereby facilitating large-scale application.

Parts are labeled in the figures as follows:.

The preferred embodiments of the present invention are described below with reference to the accompanying drawings, and the present invention can be fully introduced to those skilled in the art, such that the technical content thereof will be clearer and is easy to understand. The present invention can be embodied in various forms of embodiments, and the scope of protection of the present invention is not limited to the embodiments mentioned herein.

In the drawings, the same reference numeral indicates components having the same structure, and similar reference numerals indicate assemblies having similar structures or functions throughout. The size and thickness of each assembly shown in the figures are shown arbitrarily, and the present invention does not define the size and thickness of each assembly. In order to make the illustration clearer, the thickness of the component in some places of the figures is appropriately exaggerated.

Orientation terms mentioned in the present invention, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side" etc., are merely orientations in the figures and are only intended to explain and illustrate the present invention and are not intended to limit the scope of protection of the present invention.

When a certain assembly is described as "on" a further assembly, the assembly can be placed directly on the further assembly; and there may also be an intermediate assembly on which the assembly is placed, and the intermediate assembly placed on the further assembly. When an assembly is described as "mounted to" or "connected to" a further assembly, it can be understood as either "mounted" or "connected" directly, or an assembly being indirectly "mounted to" or "connected to" the further assembly via an intermediate assembly.

As shown in <FIG>, this embodiment provides a ceramic tile leveling system, comprising a ceramic tile leveling bracket <NUM>, an insertion block <NUM> and pushing and clamping pliers <NUM> cooperating with one another for assist in leveling of ceramic tiles <NUM> in the ceramic tile laying process, such that all the upper surfaces of the ceramic tiles lie on the same plane.

During the construction of the ceramic tile laying, a user can apply an adhesive such as cement, and a ceramic tile adhesive on a floor or a wall according to requirements, and then lay multiple ceramic tiles on the floor or the wall in sequence. During laying, a ceramic tile leveling bracket <NUM> is placed at the joint of any two adjacent ceramic tiles <NUM>, taking a square ceramic tile as an example, each of four sides thereof needs to be provided with a ceramic tile leveling bracket <NUM>.

As shown in <FIG>, the ceramic tile leveling bracket <NUM> comprises a pad <NUM> and an insert <NUM> which are integrally provided. The insert <NUM> protrudes from the center line of the upper surface of the pad <NUM>. The longitudinal section of the ceramic tile leveling bracket <NUM> approximates an inverted T-shape. The pad <NUM> is disposed below two adjacent ceramic tiles <NUM>, and the insert <NUM> is inserted into the gap between the two adjacent ceramic tiles <NUM>.

The bottom surface of the pad <NUM> is an arc-shaped surface which is a part of a cylindrical side surface. Two ends of the pad <NUM> extend smoothly upward from the middle of the bottom surface, and the tops of the two ends of the pad <NUM> are provided with reinforcing ribs <NUM> to make contact with and support the bottom surfaces of the two adjacent ceramic tiles <NUM>. The pad <NUM> is provided with two or more pad through holes <NUM> which penetrate the pad <NUM>. In the ceramic tile leveling process, an adhesive under the ceramic tile <NUM> will enter from the pad through holes <NUM> into the space enclosed by the pad <NUM> and the lower surfaces of the ceramic tiles <NUM>. During the curing of the adhesive, the pad <NUM> and the two ceramic tiles <NUM> are fixed into one body.

As shown in <FIG>, an insertion block through hole <NUM> is provided in the middle of the insert <NUM>, the insertion block through hole <NUM> penetrates the insert <NUM>, and an insertion block <NUM> may be inserted into the insertion block through hole. The longitudinal section of the insertion block <NUM> is wedge-shaped, which comprises an insertion block bottom surface <NUM> and an insertion block top surface <NUM>, wherein the insertion block bottom surface <NUM> is a plane; the insertion block top surface <NUM> is an inclined plane, and forms an acute angle, preferably of <NUM> to <NUM> degrees, with the insertion block bottom surface <NUM>. The insertion block top surface <NUM> is provided with two or more protruding serrations <NUM>, and the multiple serrations are arranged in the same straight line. Each serration <NUM> comprises a vertical serration surface <NUM> and an inclined serration surface <NUM>, the vertical serration surface <NUM> is perpendicular to the insertion block bottom surface <NUM>, and the inclined angle of the inclined serration surface <NUM> is consistent with the inclined angle of the insertion block top surface <NUM>.

As shown in <FIG>, after the ceramic tile leveling bracket <NUM> is assembled into the gap between the two adjacent ceramic tiles <NUM>, the lower end of the insertion block <NUM> can be inserted into the insertion block through hole <NUM>, and the cross section of the higher end of the insertion block <NUM> is semicircular. The user can push the insertion block <NUM> as far as possible into the insertion block through hole <NUM> by using the pushing and clamping pliers <NUM>, so that the insert <NUM> can be engaged into the serration gap between two serrations on the insertion block top surface <NUM>, and the positions of the two ceramic tiles <NUM> are thus locked. In the process of gradually pushing the insertion block <NUM> into the insertion block through hole <NUM>, the pad <NUM> moves in a small range with respect to the ceramic tiles <NUM>, and the ceramic tiles <NUM> are lifted. The heights of the two ceramic tiles <NUM> are finely adjusted such that the insertion block bottom surface <NUM> is tangent to the upper surfaces of the two ceramic tiles <NUM>. At this time, the adhesive under the ceramic tiles <NUM> is not cured and can flow through the pad through holes <NUM> into the space enclosed by the pad <NUM> and the ceramic tiles <NUM>. After the adhesive is cured, the pad <NUM> and the ceramic tiles <NUM> are fixed into one body. Since the insertion block bottom surface <NUM> is a plane, the upper surfaces of the two ceramic tiles <NUM> must also be in the same plane, so that the leveling process of the two ceramic tiles can be completed.

In this embodiment, the ceramic tile <NUM> is rectangular or square, and the junctions between the four sides thereof and the other ceramic tiles can be respectively provided with a ceramic tile leveling bracket <NUM> according to the above method. By analogy, the upper surfaces of all the ceramic tiles laid on the construction site can be positioned on the same plane by multiple ceramic tile leveling brackets <NUM>, and then left to stand for a period of time to cure the adhesive (cement, ceramic tile adhesive, etc.).

As shown in <FIG>, the lower portion of the insert <NUM> that is close to the pad <NUM> is provided with a breakable sheet <NUM>, and the sheet <NUM> is part of the insert <NUM>, and is in the shape of a straight line having a certain width, along which the user can tear the sheet <NUM> to break same, so that the insert <NUM> is divided into upper and lower portions from the tear. The height of the sheet <NUM> is substantially flush with the lower surface of the ceramic tile <NUM>.

The insert <NUM> further comprises a linear groove <NUM> recessed from a surface on one or either side of the insert <NUM>, and the bottom of the linear groove <NUM> is the sheet <NUM>. The groove structure on one side or either side of the sheet <NUM> makes the thickness of the sheet <NUM> relatively thin, and its thickness is generally about <NUM> to <NUM>. This groove structure makes the sheet <NUM> easy to tear. After the adhesive is cured, the user can violently break or tear the upper portion of the insert <NUM> from the sheet <NUM> with a conventional pliers tool.

As shown in <FIG>, in this embodiment, a side edge of the insert <NUM> on one side is provided with a bayonet <NUM>, or side edges of the insert <NUM> on two sides are respectively provided with a bayonet <NUM>, and the height of the bayonet <NUM> is greater than that of the sheet <NUM>. The insert <NUM> further comprises a hook-shaped engagement block <NUM> disposed on a side edge of the insert <NUM> on one or either side and protruding toward the bayonet <NUM>. The longitudinal section of the bottom of the bayonet <NUM> is arc-shaped, and a portion of the bayonet <NUM> that is adjacent to the hook-shaped engagement block <NUM> forms a hook-shaped bayonet portion <NUM>. The bottom of the bayonet <NUM> is a contact edge that can cooperate with an outer edge of a hook angled portion <NUM> of the pushing and clamping pliers <NUM>. The longitudinal section of the bottom of the bayonet <NUM> is arc-shaped, and the opening end of the arc-shaped contact edge (i.e., the hook-shaped engagement block <NUM>) is bent downwards.

The user can remove the upper part of the insert <NUM> from the sheet <NUM> by using a withdraw tool such as a small claw hammer. Specifically, the barb structure of the withdraw tool is used to engage into the bayonet <NUM> to remove the part of the insert above the sheet <NUM> using the principle of lever. In this embodiment, a withdraw device is provided in the pushing and clamping pliers <NUM>, and the withdraw device has a hook-shaped bayonet portion <NUM> which can be engaged into the bayonet <NUM> to quickly and efficiently remove part of the insert, as will be described in detail below.

In the construction of ceramic tile laying, after the cement, the ceramic tile adhesive or the like is cured, the inserts <NUM> of all the ceramic tile leveling brackets <NUM> are broken from the sheets <NUM>, and after the upper half of the insert <NUM> and the insertion block <NUM> are removed and cleaned, and all the gaps between the ceramic tiles are filled and flattened, the entire process of ceramic tile laying can be completed, so that the operation is simple, the construction processes can be effectively reduced, and the construction efficiency is improved.

In this embodiment, the pushing and clamping pliers <NUM> are used to push and clamp the insertion block <NUM> into the insertion block through hole <NUM> such that the insertion block bottom surface <NUM> is tangent to the upper surfaces of the two ceramic tiles <NUM>.

As shown in <FIG> and <FIG>, the pushing and clamping pliers <NUM> comprise a first component <NUM>, a second component <NUM>, and a pivot <NUM>. The first component <NUM> comprises a first clamping portion <NUM> and a first handheld portion <NUM>; and the second component <NUM> comprises a second clamping portion <NUM> and a second handheld portion <NUM>; wherein the second clamping portion <NUM> is rotatably connected to the first clamping portion <NUM> via the pivot <NUM>. A first clamping block <NUM> is disposed at a top end of the first clamping portion <NUM>, and a second clamping block <NUM> is disposed at a top end of the second clamping portion <NUM>. The second clamping block <NUM> is at the same height with the first clamping block <NUM> and disposed opposite same.

The inner side faces of the first clamping block <NUM> and the second clamping block <NUM> opposite each other may be provided with clamping teeth <NUM>, wherein the clamping teeth <NUM> of the first clamping block <NUM> are disposed opposite the second clamping block <NUM>; and the clamping teeth <NUM> of the second clamping block <NUM> are disposed opposite the first clamping block <NUM>. That is to say, the clamping teeth <NUM> of the first clamping block <NUM> are opposite the clamping teeth <NUM> of the second clamping block <NUM>. The inner side faces of the two clamping blocks facing each other are clamping faces, and the clamping teeth <NUM> can increase the friction coefficient between the clamping faces and the surface of an object to be clamped, to prevent the object from slipping out.

As shown in <FIG>, <FIG> and <FIG>, in this embodiment, the inner side wall of the first clamping block <NUM> is provided with a recessed clamping groove <NUM>, with the direction of the opening thereof facing the second clamping block <NUM>; and the second clamping block <NUM> is provided with a clamping through groove <NUM> transversely penetrating the entire second clamping block <NUM>. The clamping through groove <NUM> is disposed opposite and is in the same straight line with the clamping groove <NUM>. Portions of the second clamping block <NUM> on the two sides and at the bottom of the clamping through groove <NUM> form a bifurcated structure, which comprises two bifurcated portions. The clamping through groove <NUM> is located between the two bifurcated portions, and the clamping teeth <NUM> are provided on the clamping faces on the inner sides of the two bifurcated portions.

As shown in <FIG>, the clamping through groove <NUM> and the clamping groove <NUM> are used to push the insertion block <NUM> in the insertion block through hole <NUM> of the ceramic tile leveling bracket <NUM>. When the lower end of the insertion block <NUM> is pushed into the insertion block through hole <NUM>, the user puts the pushing and clamping plier <NUM> upside down and opens same, the higher end of the insertion block <NUM> is placed in the clamping groove <NUM>, the lower end of the insertion block <NUM> is placed in the clamping through groove <NUM>, and then the two handheld portions <NUM>, <NUM> are closed by force. During the closing of the pushing and clamping pliers <NUM>, the first clamping block <NUM> pushes the higher end of the insertion block <NUM> into the insertion block through hole <NUM>, and the bifurcated portion of the second clamping block <NUM> is pushed against one side of the insert <NUM>; the lower end of the insertion block <NUM> slides through the clamping through groove <NUM> to secure the insertion block <NUM> in the insertion block through hole <NUM>, so that the insert <NUM> can be engaged onto a certain serration on the insertion block top surface <NUM>, thereby locking the positions of the two ceramic tiles <NUM>.

In this embodiment, the pushing and clamping pliers <NUM> further comprise a withdraw device <NUM> for damaging the sheet <NUM> of the ceramic tile leveling bracket <NUM> to remove the portion of the insert <NUM> above the sheet <NUM>.

As shown in <FIG> and <FIG>, the withdraw device <NUM> comprises a hook angled portion <NUM> and a rounded portion <NUM>. The hook angled portion <NUM> protrudes in a barb shape from the outer side wall of the first clamping block <NUM>, and the outer edge of the hook angled portion <NUM> is a smooth plane or an arc-shaped surface, and is disposed on the joint between the side wall and the top of the first clamping block <NUM>. The rounded portion <NUM> is disposed at the joint between the side wall and the top of the second clamping block <NUM>, and each of the two bifurcated portions has a rounded portion <NUM>. Alternatively, the hook angled portion <NUM> protrudes in a barb shape from the outer side wall of the second clamping block <NUM>, and the two bifurcated portions protrude outwardly and a hook angled portion <NUM> extends therefrom, and the outer edge of the hook angled portion <NUM> is a smooth plane or an arc-shaped surface, and disposed at the joint between a side wall and the top of the second clamping block <NUM>. The rounded portion <NUM> is provided at the joint between the side wall and the top of the first clamping block <NUM>.

In this embodiment, the side edges of the insert <NUM> on two sides are respectively provided with a bayonet <NUM> and a hook-shaped engagement block <NUM>, and the hook-shaped engagement block <NUM> is disposed at the upper portion of the bayonet <NUM> and protrudes toward the bayonet <NUM>, and a portion of the bayonet <NUM> that is adjacent to the hook-shaped engagement block <NUM> forms a hook-shaped bayonet portion <NUM>. The bottom of the bayonet <NUM> is a contact edge that can cooperate with an outer edge of a hook angled portion <NUM> of the pushing and clamping pliers <NUM>. The longitudinal section of the bottom of the bayonet <NUM> is arc-shaped, and the opening end of the arc-shaped contact edge (i.e., the hook-shaped engagement block <NUM>) is bent downwards.

In the ceramic tile laying process, after the adhesive is cured, the pad <NUM> and the ceramic tiles <NUM> are both fixed by the adhesive, and the user can remove the upper half of the insert <NUM> by the withdraw device <NUM> of the pushing and clamping pliers <NUM>. As shown in <FIG>, at first, the user needs to close and lock the pushing and clamping pliers <NUM>, the hook angled portion <NUM> of the withdraw device <NUM> is engaged into the bayonet <NUM> on the side edge of the insert <NUM>, the outer edge of the hook angled portion <NUM> slides along the contact edge of the bayonet <NUM>, the hook angled portion <NUM> is engaged into the hook-shaped bayonet portion <NUM>, and the rounded portion <NUM> of the withdraw device <NUM> is placed on the upper surfaces of the ceramic tiles <NUM>. According to the principle of lever, the user can pull the upper half of the insert <NUM> upward with the rounded portion <NUM> as the fulcrum, and since the lower portion of the insert <NUM> that is close to the pad <NUM> is provided with the breakable sheet <NUM>, when the upper portion of the insert <NUM> is subjected to an upward force, the sheet <NUM> is torn or broken, thereby removing the portion of the insert <NUM> above the sheet <NUM>. If the sheet <NUM> is only torn but not completely broken after subjected to the force, since the bayonets <NUM> are provided on two sides of the insert <NUM>, the user can repeat the above operation from the other side until the upper portion of the insert <NUM> is completely removed.

As shown in <FIG> and <FIG>, in this embodiment, the pushing and clamping pliers <NUM> further comprise an elastic member <NUM>, one end of which is connected to the first clamping portion <NUM>, and the other end thereof is connected to the second clamping portion <NUM>. Alternatively, one end of the elastic member is connected to the first handheld portion <NUM>, and the other end thereof is connected to the second handheld portion <NUM>. When the first component <NUM> and the second component <NUM> of the pushing and clamping pliers <NUM> are relatively closed, only one hand of the user needs to apply force to the inner side, but when they are relatively opened, the user needs to use two hands at the same time, so the operation is inconvenient. The elastic member <NUM> mounted between the first component <NUM> and the second component <NUM> makes it possible to provide a certain outward tension between the first component <NUM> and the second component <NUM>, so that the user can enable opened and closed operations with one hand.

Preferably, this embodiment further comprises a first guiding post <NUM> and a second guiding post <NUM> respectively disposed on two opposite side faces of the two handheld portions <NUM>, <NUM>. The first guiding post <NUM> protrudes from the inner side face of the first handheld portion <NUM>. The second guiding post <NUM> protrudes from the inner side face of the second handheld portion <NUM>, and the second guiding post <NUM> is disposed opposite the first guiding post <NUM>. The elastic member <NUM> is preferably a coil spring, one end thereof is sheathed on the first guiding post <NUM> and the other end thereof is sheathed on the second guiding post <NUM>. In other variant embodiments, the two guiding posts <NUM>, <NUM> may be respectively disposed on two opposite side faces of the two clamping portions <NUM>, <NUM>, wherein the first guiding post <NUM> protrudes from the inner side face of the first clamping portion <NUM>; and the second guiding post <NUM> protrudes from the inner side face of the second clamping portion <NUM>, and the second guiding post <NUM> is disposed opposite the first guiding post <NUM>.

As shown in <FIG>, in this embodiment, the pushing and clamping pliers <NUM> further comprise a locking device <NUM> for switching the pushing and clamping pliers <NUM> between opened and closed states, the opened and closed states including a closed state and an opened state. When the locking device <NUM> is locked, the pushing and clamping pliers <NUM> are in the closed state. When the locking device <NUM> is unlocked, the pushing and clamping pliers <NUM> are in the opened state.

In this embodiment, the pushing and clamping pliers <NUM> further comprise a first bent portion <NUM> and a second bent portion <NUM>, which are both sheathed outside the pivot, so that the second component <NUM> is hinged to the first component <NUM> via the pivot <NUM>. The first bent portion <NUM> is part of the first clamping portion <NUM>, and the second bent portion <NUM> is part of the second clamping portion <NUM>.

As shown in <FIG>, the locking device <NUM> comprises a locking groove <NUM>, a locking member <NUM>, and a blocking block <NUM>. The locking member <NUM> and the blocking block <NUM> are respectively disposed at the ends of the two clamping portions and close to the handheld portions.

In this embodiment, preferably, the locking groove <NUM> is disposed on the outer side wall of the first bent portion <NUM>, and the locking member <NUM> is rotatably fitted to the surface of the end of the second clamping portion <NUM> and disposed opposite the locking groove <NUM>. The blocking block <NUM> is disposed on the surface of the end of the first clamping portion <NUM> and disposed opposite the second bent portion <NUM>. When the opening angle of the pushing and clamping pliers is at the maximum, the blocking block <NUM> comes into contact with the outer side wall of the second bent portion <NUM>.

As shown in <FIG>, the locking member <NUM> comprises a locking member body <NUM>, a locking engagement block <NUM>, and a tab <NUM>. The locking member body <NUM> may be a metal sheet, which is rotatably connected to the end of the first clamping portion <NUM> or the second clamping portion <NUM> via a second pivot <NUM>. A gasket <NUM> is disposed between the locking member <NUM> and the first clamping portion <NUM> or the second clamping portion <NUM>. The locking member <NUM> and the clamping portion <NUM>, <NUM> are both made of metal, and the gasket <NUM> can assist in the relative rotation of the two, thereby reducing wear between the components. The locking engagement block <NUM> protrudes from the front end of the surface of the locking member body <NUM>. When the locking engagement block <NUM> is engaged into the locking groove <NUM>, the locking device <NUM> is locked. When the locking engagement block <NUM> is disengaged from the locking groove <NUM>, the locking device <NUM> is unlocked. The tab <NUM> protrudes from and is perpendicular to the surface of the locking member body <NUM>. The user can use the finger to move the tab <NUM> to drive the locking member body <NUM> to rotate, so that the locking engagement block <NUM> is engaged into or disengaged from the locking groove <NUM>.

When the pushing and clamping pliers <NUM> need to be adjusted from the closed state to the opened state, the user can first further close the two handheld portions, and then rotate the tab <NUM> counterclockwise, so that the locking engagement block <NUM> is disengaged from the locking groove <NUM>, and is therefore unlocked, and the two clamping portions are opened under the act of the elastic member <NUM> (coil spring).

When the pushing and clamping pliers <NUM> need to be adjusted from the opened state to the closed state, the user can first close the two handheld portions, and then rotate the tab <NUM> clockwise, so that the locking engagement block <NUM> is engaged into the locking groove <NUM>, and the two clamping portions are therefore locked in the closed state.

Similarly, the locking groove <NUM> may also be disposed on the outer side wall of the second bent portion <NUM>, and the locking member <NUM> is rotatably fitted to the surface of the end of the first clamping portion <NUM> and disposed opposite the locking groove <NUM>. The blocking block <NUM> is disposed on the surface of the end of the second clamping portion <NUM> and disposed opposite the first bent portion <NUM>. When the opening angle of the pushing and clamping pliers is at the maximum, the blocking block <NUM> comes into contact with the outer side wall of the second bent portion <NUM>.

Claim 1:
Pushing and clamping pliers (<NUM>), comprising:
a first component (<NUM>), comprising a first clamping portion (<NUM>) and a first handheld portion (<NUM>);
a second component (<NUM>), comprising a second clamping portion (<NUM>) and a second handheld portion (<NUM>); and
a pivot (<NUM>) via which the second clamping portion (<NUM>) is rotatably connected to the first clamping portion (<NUM>);
a first clamping block (<NUM>) disposed at a top end of the first clamping portion (<NUM>),
a second clamping block (<NUM>) disposed at a top end of the second clamping portion (<NUM>) and arranged opposite the first clamping block (<NUM>);
a clamping groove (<NUM>) recessed from an inner side wall of the first clamping block (<NUM>), with the direction of an opening of the groove facing the second clamping block (<NUM>); and
a clamping through groove (<NUM>) penetrating through the second clamping block (<NUM>) and disposed opposite the clamping groove (<NUM>);
the pushing and clamping pliers (<NUM>) being characterized in further comprising:
a withdraw device (<NUM>) for damaging the sheet (<NUM>) of the ceramic tile leveling device (<NUM>) to remove the portion of the insert (<NUM>) above the sheet (<NUM>), wherein the withdraw device (<NUM>) comprises:
a hook angled portion (<NUM>) protruding in a barb shape from an outer side wall of the first clamping block (<NUM>); and
a rounded portion (<NUM>) disposed at a joint between a side wall and the top of the second clamping block (<NUM>); or
the withdraw device (<NUM>) further comprising:
a hook angled portion (<NUM>) protruding in a barb shape from an outer side wall of the second clamping block (<NUM>); and
a rounded portion (<NUM>) disposed at a joint between a side wall and the top of the first clamping block (<NUM>).