CN218613873U

CN218613873U - A changeover mechanism and pickaxe hammer for pickaxe hammer

Info

Publication number: CN218613873U
Application number: CN202221670001.3U
Authority: CN
Inventors: 陈达正
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2023-03-14
Anticipated expiration: 2032-06-29

Abstract

The utility model discloses a switching mechanism for a pickaxe hammer, which comprises a switching part, a driving part and a driving part, wherein the switching part is used for connecting a power output device, the end part of the switching part forms a switching section, and the width of the section of the switching section is changed in a gradient manner; a transition piece having an upper slot and a lower slot; an assembly portion connected to the workpiece; the upper slot is provided with a reducing section, the switching section extends into the upper slot, and the switching section is in locking connection with the upper slot along with the increase of the axial coincidence length of the switching part and the transition piece. The utility model also discloses a pickaxe hammer. The utility model designs the switching mechanism into a three-part split structure, the transition piece can be adapted to different work pieces and power mechanisms, and the use is flexible; the matching structure between the switching section and the upper slot and between the lower slot and the assembling part is simple and stable, the axial overlapping length between the lower slot and the assembling part is increased along with the increase of the axial overlapping length between the driving switching section and the upper slot, and the assembling stability between the transition piece and the switching part and between the transition piece and the assembling part is ensured; the use cost of the pickaxe hammer is saved.

Description

A changeover mechanism and pickaxe hammer for pickaxe hammer

Technical Field

The utility model belongs to the technical field of electric tool, especially, relate to an changeover mechanism and pickaxe hammer for pickaxe hammer.

Background

The simple working heads of the electric tools on the market at present are all of an integrally formed structure, the workpiece at the end part of the simple working head is formed by integral columnar metal knocking, the width of the simple working head is limited by the diameter of the metal, the working knife edge is short, and the working efficiency is low; in addition, due to the integral forming structure, once the knife edge is damaged, the knife edge needs to be integrally replaced, metal materials are wasted, and the use is not economical enough.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a work piece can be changed, and change convenient operation's an changeover mechanism and a pickaxe hammer for pickaxe hammer.

The utility model provides a technical scheme that its technical problem adopted is: an adapter mechanism for a hammer, comprising:

the adapter part is used for connecting a power output device, and the end part of the adapter part forms an adapter section, and the width of the section of the adapter section is changed in a gradient manner;

a transition piece having an upper slot and a lower slot;

an assembly portion connected to the workpiece;

the upper slot is provided with a reducing section, the switching section extends into the upper slot, and the switching section is in locking connection with the upper slot along with the increase of the axial coincidence length of the switching part and the transition piece.

The switching mechanism is designed into a three-part split structure, so that the switching part connected with the power output device and the assembling part connected with the work piece can be disassembled and assembled with the transition piece, the transition piece can be adapted to different work pieces and power mechanisms, and the use is more flexible; the matching structure between the switching section and the upper slot is simple and stable, and the power output device drives the workpiece to move up and down to realize work, so that the power output device can drive the axial coincidence length between the switching section and the upper slot to be increased, and the assembly stability between the switching part and the transition piece is ensured.

Further, the sectional width of the fitting portion varies in a gradient manner; the lower slot is provided with an expanding section, the assembling part extends into the lower slot, and the assembling part is in locking connection with the lower slot along with the increase of the axial overlapping length of the assembling part and the transition piece. The axial locking of the lower slot and the assembly part is realized by utilizing the inner diameter change of the lower slot and the width change of the assembly part, and the structure is simple and stable.

Furthermore, the switching section is conical, and the outer diameter of the switching section changes in a gradient manner. The switching section is conical, and the area of contact between it and the last slot inner wall increases, guarantees the steadiness of being connected with the transition piece.

Furthermore, the transition piece is also provided with an extension part which forms a limit clamping groove for the workpiece to extend into. The extension part increases the connection stability of the work piece, the limiting clamping grooves limit the work piece more, and unstable operation caused by the fact that the area of the scraper is relatively large when the work piece is the scraper is avoided.

Further, the fitting portion has a flat trapezoidal shape. When the work piece is the scraper blade, assembly portion is the platykurtic with the scraper blade is the same, and processing is more convenient, and the connection steadiness between assembly portion and the work piece is also higher simultaneously.

Furthermore, the transition piece side wall is provided with at least one through hole, and a pressing tool can extend into the through hole and then abut against the adapter section or the assembling part. The perforation is convenient for the extrusion tool to stretch into behind the perforation and offset with changeover portion or assembly portion to can exert external force and extrude changeover portion or work piece transition piece, convenient dismantlement.

Furthermore, the transition piece side wall is also provided with a second perforation and a third perforation which are respectively positioned at two radial sides of the transition piece, and the second perforation and the third perforation are positioned in the same axial direction and at least partially overlap with the axial projection of the perforations. The extruding tool can sequentially stretch into the through hole and the second through hole, the connecting section is extruded into the slot by utilizing the lever principle, or the connecting section is sequentially stretched into the through hole and the third through hole, the workpiece is extruded into the lower slot by utilizing the lever principle, and the connecting section and the workpiece are more convenient and labor-saving to dismantle.

The utility model also discloses a pickaxe hammer, including power take off, work piece, and as above switching mechanism.

Further, the workpiece is a blade.

Further, the workpiece is a chisel. The work piece can be various structural style, can adapt to different use scenes, can use the same transition piece and different power take off, different work piece assembly connection, practices thrift the use cost of pickaxe hammer.

The utility model has the advantages that: the switching mechanism is designed into a three-part split structure, and the transition piece can be adapted to different work pieces and power mechanisms, so that the use is more flexible, and the switching mechanism is suitable for different use scenes; the matching structure between the switching section and the upper slot and between the lower slot and the assembling part is simple and stable, and the power output device drives the workpiece to move up and down to realize work, so that the axial overlapping length between the switching section and the upper slot is increased, the axial overlapping length between the lower slot and the assembling part is also increased, and the assembling stability between the transition piece and the switching part and the assembling part is ensured; the same transition piece, different power output devices and different work pieces can be used for assembly and connection, and the use cost of the pickaxe hammer is saved.

Drawings

Fig. 1 is a first perspective view of a hammer according to a first embodiment of the present invention.

Fig. 2 is a second perspective view of the hammer according to the first embodiment of the present invention.

Fig. 3 is a front view of a transition piece according to a first embodiment of the present invention.

Fig. 4 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A in fig. 3.

Fig. 5 is an exploded schematic view of a hammer according to an embodiment of the present invention, in which the workpiece is a scraper.

Fig. 6 is a front view of a hammer according to an embodiment of the present invention.

Fig. 7 is a sectional view taken along line B-B in fig. 6.

Fig. 8 is an enlarged view of the structure at C in fig. 7.

Fig. 9 is an exploded view of a hammer according to a second embodiment of the present invention, in which the workpiece is a chisel.

Detailed Description

In order to make the technical solution of the present invention better understood, the following figures in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.

Example one

As shown in fig. 1 and 2, an adapting mechanism for a hammer includes, from top to bottom, an adapting portion 1 for connecting a power output device, a transition piece 2, and a mounting portion 3 connected to a workpiece, in the direction shown in fig. 5 as an example. As shown in fig. 5, the lower end of the adapter part 1 forms an adapter section 11, the cross-sectional width of the adapter section 11 varies in a gradient manner, specifically, the cross-sectional width varies in a gradient manner from top to bottom, in this embodiment, the adapter section 11 is a conical shape with a large top and a small bottom, and the outer diameter varies in a gradient manner from top to bottom.

As shown in fig. 3 and 4, the transition piece 2 has an upper slot 21 and a lower slot 22 that are communicated with each other, and the upper slot 21 has a reduced diameter section 121, in other words, the inner diameter of the upper slot 21 is gradually reduced from top to bottom. When the section width of the switching section 11 decreases in a gradient manner from top to bottom, the locking strength between the switching section 11 and the upper slot 21 increases along with the increase of the axial overlapping length of the switching section 1 and the transition piece 2, that is, the length of the switching section 1 inserted into the upper slot 21 increases, so that the purpose of locking and connecting the switching section 11 and the upper slot 21 is achieved.

Similarly, the sectional width of the fitting portion 3 is also changed in a gradient manner, and the sectional width thereof gradually increases from the top to the bottom, and the lower insertion groove 22 has an enlarged diameter section 221, and the inner diameter of the enlarged diameter section 221 gradually increases from the top to the bottom. When the assembling portion 3 extends into the lower slot 22, as the axial overlapping length of the assembling portion 3 and the transition piece 2 increases, that is, the length of the assembling portion 3 inserted into the lower slot 22 increases, the locking strength between the assembling portion 3 and the lower slot 22 also increases, so as to achieve the purpose of locking and connecting the assembling portion 3 and the lower slot 22.

And most of the pickaxes are driven by the power output device, and the work piece moves up and down to realize work, so that the power output device can drive the axial coincidence length between the switching section 11 and the upper slot 21 to be increased, and the assembly stability between the switching part 1 and the transition piece 2 is ensured.

In the present embodiment, the workpiece is a blade 41 having a flat configuration, in which case the mounting portion 3 has a flat trapezoidal shape. The transition piece 2 further has an extension portion 23, the extension portion 23 is a hollow cylindrical structure, a limit slot 24 is formed in the radial position of the side wall, the workpiece 4 can extend into the limit slot 24, and in order to avoid shaking in use, the width of the limit slot 24 is approximately equal to the thickness of the scraper 41.

In order to facilitate the detachment of the adapter part 1 and the mounting part 3, the side wall of the transition piece 2 is provided with at least one through hole 25, and the radial position of the through hole 25 can be perpendicular to the position-limiting clamping groove 24 and is positioned above the height of the position-limiting clamping groove 24. As shown in fig. 8, the pressing tool can press the adaptor 1 away from the upper slot 21 by pressing the adaptor against the end surface of the adaptor 11 after extending through the through hole 25. Of course, the pressing tool may be pressed against the end surface of the fitting portion 3 to press the scraper 41 downward to be disengaged from the lower insertion groove 22.

The pressing tool may be a triangular pyramid with an end portion that extends into the through hole 25 to a greater depth, and the inclined surface may press the end surface or edge of the transition section 11 upward.

In order to facilitate the extrusion of the working member or transition part 1 out of the transition piece 2, the transition piece 2 has a second through hole 26 and a third through hole 27 in the side wall, the second through hole 26 is located axially above the third through hole 27, and both are located on the same radial direction of the transition piece 2 as the through hole 25, and the axial projection of the second through hole 26 at least partially overlaps the upper part of the through hole 25, and the axial projection of the third through hole 27 at least partially overlaps the lower part of the through hole 25.

During disassembly, the pressing tool may first extend into the through hole 25, extrude a portion of the adaptor section 11 upward, then continue to extend into the second through hole 26, and then apply an external force to knock the pressing tool, so as to separate the adaptor section 11 from the upper slot 21 by using the lever principle. Of course, when the overlap of the axial projections of the second through hole 26 and the through hole 25 is large, the pressing tool may be directly inserted into the through hole 25 and the second through hole 26 in turn to separate the adaptor section 11 from the upper socket 21.

Similarly, the workpiece is removed by inserting the pressing tool into the through hole 25, extruding a portion of the mounting portion 3, and then inserting the pressing tool into the third through hole 26; or directly into the perforation 25 and the third perforation 27 in that order.

The embodiment also discloses a pickaxe hammer, which comprises a power output device, a workpiece and the switching mechanism, wherein the power output device is connected with the switching part 1, the workpiece is connected with the assembling part 3, and the power output device and the assembling part can be integrally connected or separately connected. In this embodiment, the workpiece is a blade 41.

Example two

As shown in fig. 9, the present embodiment is different from the first embodiment in that the workpiece is a chisel 42, and the mounting portion 3 has a truncated cone-shaped structure with a small top and a large bottom. Other structures are the same as those in the first embodiment, and are not described again.

In other embodiments, the work piece can be in other structures, i.e. different work heads can be replaced for operation.

The above detailed description is provided for illustrative purposes, and is not intended to limit the present invention, and any modifications and variations of the present invention are within the spirit and scope of the following claims.

Claims

1. An adapter mechanism for a hammer, comprising:

the adapter part (1) is used for connecting a power output device, the end part of the adapter part forms an adapter section (11), and the width of the section of the adapter section (11) changes in a gradient manner;

a transition piece (2) having an upper socket (21) and a lower socket (22); the side wall of the transition piece (2) is provided with at least one through hole (25), and an extrusion tool can extend into the through hole (25) and then abut against the adapter section (11) or the assembling part (3); the side wall of the transition piece (2) is also provided with a second perforation (26) and a third perforation (27), which are respectively positioned at two radial sides of the transition piece (2) with the perforation (25), and the second perforation (26) and the third perforation (27) are positioned at the same axial direction and at least partially overlap with the axial projection of the perforation (25);

an assembly portion (3) connected to the workpiece;

the upper slot (21) is provided with a reducing section (121), the switching section (11) extends into the upper slot (21), and the switching section (11) is in locking connection with the upper slot (21) along with the increase of the axial coincidence length of the switching part (1) and the transition piece (2).

2. The changeover mechanism for a pick hammer of claim 1, wherein: the cross-sectional width of the fitting part (3) varies in a gradient manner; the lower slot (22) is provided with an expanding section (221), the assembling part (3) extends into the lower slot (22), and the assembling part (3) is in locking connection with the lower slot (22) along with the increase of the axial overlapping length of the assembling part (3) and the transition piece (2).

3. The changeover mechanism for a pick hammer of claim 1, wherein: the switching section (11) is conical, and the outer diameter of the switching section changes in a gradient manner.

4. The changeover mechanism for a pick hammer of claim 1, wherein: the transition piece (2) also has an extension part (23), and the extension part (23) forms a limit clamping groove (24) for a workpiece to extend into.

5. The changeover mechanism for a pick hammer of claim 4, wherein: the assembling part (3) is in a flat trapezoid shape.

6. A pickaxe hammer is characterized in that: comprising a power take-off, a working member, and a changeover mechanism as claimed in any one of claims 1 to 5.

7. The pick hammer of claim 6, wherein: the workpiece is a blade (41).

8. The pick hammer of claim 6, wherein: the workpiece is a chisel (42).