CN216990175U

CN216990175U - Bolt blooming fastening device for carburetor of small gasoline engine

Info

Publication number: CN216990175U
Application number: CN202122171037.9U
Authority: CN
Inventors: 黄旭瑞; 黄旭炜; 黄艳艳; 何阳
Original assignee: Shanghai Greenlog Precision Machinery Technology Co ltd
Current assignee: Shanghai Greenlog Precision Machinery Technology Co ltd
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2022-07-19
Anticipated expiration: 2031-09-08

Abstract

The utility model relates to the technical field of carburettors, and particularly discloses a bolt blooming fastening device of a carburetor of a small gasoline engine, which comprises a bracket, wherein a positioning block is arranged on the bracket, a bearing surface is arranged on the positioning block, a blooming knife is arranged on the opposite surface of the bearing surface, one end of the blooming knife is rotatably connected on the positioning block or the bracket, the other end of the blooming knife is in clearance fit with the bearing surface to form a clamping cavity, a pressing block capable of pressing the blooming knife to drive the blooming knife to approach towards the bearing surface is arranged on the side edge of the blooming knife, and a return spring for driving the blooming knife to be far away from the bearing surface is arranged between the blooming knife and the positioning block. By adopting the structure, the bolt blooming and fastening device of the carburetor of the small gasoline engine can ensure that the tail part of the bolt is extruded and deformed after the door sheet bolt is assembled, and prevent the bolt from loosening.

Description

Bolt blooming fastening device for carburetor of small gasoline engine

Technical Field

The utility model relates to the technical field of carburettors, in particular to a bolt blooming fastening device for a carburetor of a small gasoline engine.

Background

At present, in order to solve the defects that the bolts of the door leaf of the carburetor are easy to loosen due to the high-speed vibration of the engine and the loosened bolts and door leaf are sucked into the engine by negative pressure in the use process of the existing general small gasoline engine, so that the engine is damaged and scrapped, a device for preventing the bolts from loosening is urgently needed.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides the bolt blooming fastening device of the carburetor of the small gasoline engine, which can enable the tail part of the bolt to be extruded and deformed after the bolt of the door sheet is assembled and prevent the bolt from loosening.

In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a small-size gasoline engine carburetor screw fastening device that blooms, includes the support, be provided with the locating piece on the support, be provided with a loading end on the locating piece, be provided with the flower cutter on the opposite face of loading end, the one end of flower cutter rotates to be connected on locating piece or support, and the other end forms the centre gripping chamber with loading end clearance fit, the side of flower cutter is provided with can support and press the suppression piece that drives the flower cutter and draw close towards the loading end on the flower cutter, be provided with the reset spring that drives the flower cutter and keep away from the loading end between flower cutter and the locating piece.

Among the above-mentioned technical scheme, the assembled door leaf screw is located between loading face and the sword of blooming, and the screw becomes perpendicular setting with the sword of blooming, and under the effect of briquetting, the sword of blooming carries out the centre gripping extrusion to the screw with the loading face, and the sword of blooming is to cutting open the afterbody of screw along its axial, makes the afterbody of screw become the open mode and constitutes spacing cooperation, avoids the screw pine to take off.

As a further arrangement of the utility model, an extending part extending outwards is arranged on the positioning block, an executing part opposite to the extending part is arranged on the knurling tool, the bearing surface is positioned on the extending part, and the clamping cavity is formed by a gap between the extending part and the executing part.

Among the above-mentioned technical scheme, extension and execution portion can stretch into the carburetor have the door leaf downthehole, then the centre gripping intracavity is arranged in to the door leaf through the upset, makes things convenient for extension and execution portion to carry out the centre gripping to the screw, and the outside profile that preferred extension and execution portion formed and the hole adaptation on the carburetor, reset spring are located the position that is close to the centre gripping chamber, and the centre gripping chamber is kept away from to the position of rotating the connection.

As a further arrangement of the utility model, the support comprises a supporting block, the supporting block is provided with an installation cavity for the positioning block to penetrate through, the blooming knife is also positioned in the installation cavity, the supporting block is also provided with a through hole for the pressing block to penetrate through, the through hole is communicated with the installation cavity, and the through hole is aligned with the blooming knife.

Among the above-mentioned technical scheme, the setting of supporting shoe can support the locating piece, and the through-hole has the guide effect to propping the briquetting.

As a further arrangement of the utility model, the positioning block is provided with support plates positioned at two corresponding sides of the blooming knife, and the blooming knife is rotatably connected on the support plates.

Among the above-mentioned technical scheme, the space between the two preferred backup pads just supplies the sword of blooming to inlay to establish, and the sword of blooming articulates on two backup pads through the articulated shaft for the sword of blooming rotates stably, has the effect of direction, and the briquetting butt is on the back of a knife blade of blooming.

As a further arrangement of the utility model, a spring groove for embedding the return spring is arranged on the positioning block, one end of the return spring is abutted in the spring groove, and the other end of the return spring is abutted on the flower cutter.

In the technical scheme, the return spring is a compression spring, one end of the return spring is embedded in the spring groove, the installation is stable, and the displacement is avoided.

As a further arrangement of the utility model, the positioning block and the flowering knife are arranged in radial symmetry.

In the technical scheme, the positioning block and the blooming knife are bilaterally symmetrical, namely the spring groove, the executing part, the extending part, the rotary hinge joint and the like are all two, so that both ends can be used for machining, the service life of the part is prolonged, and the cost is reduced.

As a further arrangement of the utility model, an air cylinder is arranged above the pressing block, and an output shaft of the air cylinder and the pressing block form a pressing fit.

Among the above-mentioned technical scheme, the cylinder is with low costs, and convenient operation can also be other driving pieces such as motor.

As a further arrangement of the utility model, the bearing surface is provided with a positioning groove matched with the screw head, and the end surface of the knurling tool facing the bearing surface is provided with a cutting edge which is aligned with the central line of the positioning groove.

Among the above-mentioned technical scheme, the radial profile adaptation of constant head tank and screwhead makes things convenient for the screwhead to inlay and establishes, and when avoiding the extrusion, the screw rocks, and the cutting edge aligns with the axis of screw, and is more laborsaving.

As a further arrangement of the utility model, the pressing block is a screw rod, a nut is connected to the screw rod in a threaded manner, and the nut and the supporting block form limit fit.

Among the above-mentioned technical scheme, the degree of depth that the screw rod stretches into the through-hole through the regulation of nut, control the rotation stroke of flower cutter promptly.

The utility model is further described below with reference to the accompanying drawings.

Drawings

FIG. 1 is a perspective view of a structure of an embodiment of the present invention;

FIG. 2 is a front view of a structure according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a front elevation view of a carburetor according to an embodiment of the present invention;

fig. 5 is a sectional view taken along line B-B of fig. 4.

Detailed Description

The specific embodiment of the utility model is shown in fig. 1-5, and the screw blooming fastening device of the carburetor of the small gasoline engine comprises a support 1, wherein a positioning block 2 is arranged on the support 1, a bearing surface 21 is arranged on the positioning block 2, a blooming knife 3 is arranged on the opposite surface of the bearing surface 21, one end of the blooming knife 3 is rotatably connected on the positioning block 2 or the support 1, the other end of the blooming knife 3 is in clearance fit with the bearing surface 21 to form a clamping cavity 4, a pressing block 5 capable of pressing the blooming knife 3 to drive the blooming knife 3 to approach towards the bearing surface 21 is arranged on the side edge of the blooming knife 3, and a return spring 22 is arranged between the blooming knife 3 and the positioning block 2.

The assembled door leaf screw A is positioned between the bearing surface 21 and the blooming knife 3, the screw A and the blooming knife 3 are vertically arranged, under the action of the pressing block 5, the blooming knife 3 and the bearing surface 21 clamp and extrude the screw A, the blooming knife 3 cuts the tail of the screw A along the axial direction of the screw A, so that the tail of the screw A is in an open state to form limiting fit, and the screw A is prevented from loosening.

The positioning block 2 is provided with an extending part 23 extending outwards, the knurling tool 3 is provided with an actuating part 31 opposite to the extending part 23, the bearing surface 21 is positioned on the extending part 23, and the clamping cavity 4 is formed by a gap between the extending part 23 and the actuating part 31. The extension part 23 and the execution part 31 can extend into a hole of the carburetor C with a door sheet B, then the door sheet B is placed in the clamping cavity 4 through overturning, the screw A can be conveniently clamped by the extension part 23 and the execution part 31, the external contour formed by the extension part 23 and the execution part 31 is preferably matched with the hole in the carburetor C, the return spring 22 is located at a position close to the clamping cavity 4, and the rotatably connected position is far away from the clamping cavity 4.

The support 1 comprises a supporting block 11, a mounting cavity 111 for the positioning block 2 to penetrate is formed in the supporting block 11, the flower opening knife 3 is also located in the mounting cavity 111, a through hole 112 for the pressing block 5 to penetrate is further formed in the supporting block 11, the through hole 112 is communicated with the mounting cavity 111, and the through hole 112 is aligned with the flower opening knife 3. The supporting block 11 is arranged to support the positioning block 2, and the through hole 112 has a guiding function to the pressing block 5.

The positioning block 2 is provided with support plates 24 positioned at two corresponding sides of the flower-making knife 3, and the flower-making knife 3 is rotatably connected to the support plates 24. The space between the two preferable supporting plates 24 is just used for embedding the blooming knife 3, the blooming knife 3 is hinged on the two supporting plates 24 through a hinged shaft, so that the blooming knife 3 is stable in rotation and has a guiding function, and the pressing block 5 is abutted on the knife back of the blooming knife 3.

The positioning block 2 is provided with a spring groove 25 for embedding the return spring 22, one end of the return spring 22 is abutted against the spring groove 25, and the other end is abutted against the flower cutter 3. The return spring 22 is a compression spring, one end of which is embedded in the spring groove 25, and is stably installed to avoid displacement.

The positioning block 2 and the blooming knife 3 are arranged in radial symmetry. The positioning block 2 and the blooming knife 3 are bilaterally symmetrical, namely the spring groove 25, the executing part 31, the extending part 23, the rotary hinge joint and the like are all two, so that both ends can be used for processing, the service life of parts is prolonged, the cost is reduced, the positioning block 2 and the blooming knife 3 can be reversely installed during installation, and both ends can work.

An air cylinder 51 is arranged above the pressing block 5, and an output shaft 511 of the air cylinder 51 and the pressing block 5 form a pressing fit. The cylinder 51 is low in cost and convenient to operate, and can be used as other driving parts such as a motor.

The bearing surface 21 is provided with a positioning groove 211 matched with the head of the screw a, the end surface of the knurling knife 3 facing the bearing surface 21 is provided with a cutting edge 311, preferably, the cutting edge 311 is positioned at the executing part 31, the positioning groove 211 is positioned at the extending part 23, and the cutting edge 311 is aligned with the central line of the positioning groove 211. The radial profile adaptation of constant head tank 211 and screw A head makes things convenient for the screw A head to inlay and establishes, and when avoiding the extrusion, screw A rocks, and cutting edge 311 aligns with screw A's axis, and is more laborsaving.

The pressing block 5 is a screw, a nut 52 is connected to the screw in a threaded manner, and the nut 52 and the supporting block 11 form limit fit. The depth of the screw rod extending into the through hole 112, namely the rotation stroke of the knurling knife 3, can be controlled by adjusting the nut 52.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The present invention is not limited to the above embodiments, and those skilled in the art can implement the present invention in other embodiments according to the disclosure of the present invention, or make simple changes or modifications on the design structure and idea of the present invention, and fall into the protection scope of the present invention.

Claims

1. The utility model provides a small-size gasoline engine carburetor screw fastener that blooms, includes the support, its characterized in that: the flower-making machine is characterized in that a positioning block is arranged on the support, a bearing surface is arranged on the positioning block, a flower-making knife is arranged on the opposite surface of the bearing surface, one end of the flower-making knife is rotatably connected to the positioning block or the support, the other end of the flower-making knife is in clearance fit with the bearing surface to form a clamping cavity, a pressing block capable of pressing the flower-making knife to drive the flower-making knife to approach towards the bearing surface is arranged on the side edge of the flower-making knife, and a reset spring for driving the flower-making knife to keep away from the bearing surface is arranged between the flower-making knife and the positioning block.

2. The bolt loosening fastening device for the carburetor of a small gasoline engine according to claim 1, wherein: the positioning block is provided with an extending part extending outwards, the knurling cutter is provided with an executing part opposite to the extending part, the bearing surface is positioned on the extending part, and the clamping cavity is formed by a gap between the extending part and the executing part.

3. The bolt loosening fastening device for the carburetor of a small gasoline engine according to claim 1 or 2, wherein: the support comprises a supporting block, a mounting cavity for the positioning block to penetrate is formed in the supporting block, the blooming knife is also located in the mounting cavity, a through hole for the pressing block to penetrate is further formed in the supporting block, the through hole is communicated with the mounting cavity, and the through hole is aligned with the blooming knife.

4. The screw loosening fastening device for a carburetor of a small gasoline engine as claimed in claim 3, wherein: the positioning block is provided with supporting plates positioned on two corresponding sides of the blooming knife, and the blooming knife is rotatably connected to the supporting plates.

5. The bolt loosening fastening device for the carburetor of a small gasoline engine according to claim 1, 2 or 4, wherein: the positioning block is provided with a spring groove for embedding the return spring, one end of the return spring is abutted to the spring groove, and the other end of the return spring is abutted to the flower cutter.

6. The bolt loosening fastening device for the carburetor of a small gasoline engine as claimed in claim 5, wherein: the positioning block and the blooming knife are radially and symmetrically arranged.

7. The bolt loosening fastening device for the carburetor of a small gasoline engine according to claim 1, 2, 4 or 6, wherein: an air cylinder is arranged above the pressing block, and an output shaft of the air cylinder and the pressing block form pressing fit.

8. The tightening device for bolt blooming of the carburetor of a small gasoline engine according to claim 7, characterized in that: the bearing surface is provided with a positioning groove matched with the screw head, and the end face, facing the bearing surface, of the knurling tool is provided with a cutting edge which is aligned with the central line of the positioning groove.

9. The screw loosening fastening device for a carburetor of a small gasoline engine as claimed in claim 3, wherein: the pressing block is a screw, a nut is connected to the screw in a threaded mode, and the nut and the supporting block form limiting fit.