TWM572291U - Structure for hole saw - Google Patents

Abstract

The present invention provides a rotary saw assembly structure for attaching and mounting a saw blade and a drill bit, wherein the saw blade is a dome-shaped structure, and a plurality of cutting edges are arranged on the periphery of the opening, and the saw blade is centrally disposed. There is a screw hole for mounting and a plurality of positioning holes, and the rotary saw assembly comprises an outer sleeve, a fixed shaft, a resilient element, a first fixing block and a second fixing block. The center of the outer sleeve has a through passage for moving through the fixed shaft, and one end of the outer sleeve is provided with a mounting block for screwing the saw blade to one end of the fixed shaft, and the second fixed block is operated The fixing shaft and the saw blade are positioned and fixed in the direction of the mounting block, thereby generating a two-stage fixing effect, which is easy to operate and greatly improves the stability and safety after installation.

Description

Rotary hole saw group structure

This creation belongs to the technical field of drilling and cutting machine tools, especially a rotary hole saw group structure, which has simple operation for quick disassembly and assembly, and has two-stage fixing effect after assembly, and can improve stability during assembly and use. Sex and safety.

In general interior decoration and decoration projects, there is often a need to install electrical appliances such as air conditioners or lamps. Therefore, it is necessary to drill holes in various wall surfaces for accommodating or wearing accessories for such electrical appliances, since these holes must be It is enough to accommodate or wear these electrical accessories, so the hole area is not small, and the traditional method of drilling with a chainsaw can not obtain the required hole shape. Therefore, the common way of application is through The hole saw is used for drilling and cutting operations.

One of the conventional rotary saws has a saw blade and a tool holder integrally formed. Through the tool holder connected to a rotary power source, a hole having the same diameter as the saw blade can be drilled on the target, and the biggest disadvantage is When the saw blade of the integrally formed rotary saw or one of the holders is damaged, it cannot be replaced separately, thereby causing unnecessary waste.

Therefore, there is also an assembled rotary hole saw set consisting of a saw blade and a tool holder, wherein the tool holder is connected to a rotary power source for driving the saw blade to rotate. Cutting; the saw blade is a dome-shaped structure, and a plurality of cutting edges are arranged on the periphery of the opening, which can be used for cutting holes corresponding to the size of the opening. In order to facilitate replacement of different sizes, the center of the saw blade is provided for One screw hole and a plurality of positioning holes are installed. When the saw blade is assembled with the tool holder, a driving rod is arranged inside the tool holder, one end of which is connected with the rotating power source, and the other end is transmitted through the screw. The arrangement is interlocked with the saw blade to synchronize the drive for drilling, and further solves the inconvenience of being unable to separately remove or replace the seat and the drill bit. However, in order to ensure the safety during operation and the linkage between the seat and the saw blade, it is necessary to securely lock the two during the assembly process, but the current design still occurs after a long time of use. The saw blade is missing from the drive rod and cannot separate the two.

Therefore, how to ensure the linkage between the saw blade and the drive rod, and to quickly and conveniently separate the two for repair and replacement, is currently an urgent problem to be solved. In this creator's concept, a rotary hole saw group structure is conceived, and it is hoped that the above-mentioned conventional rotary hole saw can be used in the use and assembly, and the like.

In view of the above, an object of the present invention is to provide a rotary saw assembly structure, wherein a fixed shaft is disposed through a movable outer sleeve, and a mounting block is disposed at one end of the outer sleeve, and the saw blade is snail Provided at one end of the fixed shaft, the fixed shaft can be positioned and fixed together with the saw blade in the direction of the mounting block, thereby generating a two-stage fixing effect, which is simple and stable in operation, and greatly improves the safety after installation. Sex.

In order to achieve the above object, the rotary saw set structure of the present invention is for attaching and installing a saw blade and a drill bit, wherein the saw blade is a dome-shaped structure, and a plurality of cutting edges are arranged on the periphery of the opening, and The center of the saw blade is provided with a screw hole for mounting and a plurality of positioning holes, and the structure of the rotary saw chain includes: an outer sleeve having a through passage at a center thereof, and one end of the outer sleeve corresponds to the saw blade A mounting block is disposed, the mounting block is provided with a pair of positioning posts corresponding to the positioning holes, the two positioning posts are symmetrically disposed on two sides of the through passage opposite to the surface of the mounting block, and the other end of the outer sleeve is provided with a first a threaded portion; a fixed shaft, the limiting movement is disposed in the through passage of the outer sleeve, and one end of the fixed shaft is corresponding to the screw hole and a second thread portion is provided to fix the saw blade to the second a threaded portion, wherein the other end of the fixed shaft is provided with a third threaded portion, and the fixed shaft is provided with a center of one end of the second threaded portion corresponding to the drill bit; and a resilient member is movably disposed on the outer sleeve Externally, the elastic element a top portion abutting the mounting block; a first fixing block screwed to the first threaded portion, the elastic member being sandwiched between the mounting block and the first fixing block; and a second fixing block, a screw is disposed on the third threaded portion, thereby pulling the fixed shaft to move toward the mounting block, and then adjusting the position of the saw blade, so that the pair of positioning posts are respectively inserted into the two positioning holes to form a first The segment is fixed and is formed by adjusting the movement of the first fixing block toward the second fixing block to form a mutual enthalpy to form a second segment fixing, and the repulsion elastic force of the elastic member is used to abut the first fixing block to strengthen the segment. Fixed effect.

In one embodiment, a positioning portion is disposed on a side of the second threaded portion, and the positioning portion is in a polyhedral structure to correspond to a position of the positioning post, and the mounting block is formed with a positioning groove corresponding to the positioning portion. The positioning groove correspondingly forms a polygonal groove structure, so that the positioning portion can be completely inserted into the positioning groove during assembly, and the multi-faceted fixing manner increases the stability and safety after assembly.

In another embodiment, the rotary saw assembly of the present invention further has a protective cover, and the protective cover has a through hole in the center, and the through hole is provided with a bearing for inserting the outer sleeve therein. And the elastic element and the mounting block are clamped and fixed therebetween, so that the saw blade is located in the protective cover, so that the debris caused by the saw blade can fly and affect the operator during the cutting operation. .

In order for your review board to have a clear understanding of the content of this creation, please use the following instructions to match the drawings.

Please refer to FIG. 1 , FIG. 2 and FIG. 3 to FIG. 5 , which are perspective exploded views of the preferred embodiment of the present invention, and assembled perspective views thereof, and various cross-sectional views of the assembly process. The present invention discloses a rotary saw assembly structure 1 for attaching and mounting a saw blade 2, wherein the saw blade 2 is a dome-shaped structure, and a plurality of cutting edges 21 are provided on an opening periphery thereof, and the saw blade 2 is provided. The center of the system is provided with a screw hole 22 for mounting and a plurality of positioning holes 23, and the positioning holes 23 are arranged in a four-point manner, and the rotary saw assembly 1 of the present invention includes a jacket. The tube 11 , a fixed shaft 12 , an elastic element 13 , a first fixing block 14 and a second fixing block 15 .

The center of the outer sleeve 11 has a through passage 111, and a mounting block 112 is disposed at one end of the outer sleeve 11 corresponding to the saw blade 2, and the mounting block 112 is provided with a pair of positioning corresponding to the positioning hole 23 The first positioning post 1121 is symmetrically disposed on two sides of the through passage 111 opposite to the surface of the mounting block 112. Further, a first threaded portion 113 is disposed on the outer wall of the other end of the outer sleeve 11 for the screw. The first fixing block 14 is fixed.

The fixed shaft 12 is disposed in the through passage 111 of the outer sleeve 11 so that the fixed shaft 12 can reciprocate or retreat relative to the outer sleeve 11 , and one end of the fixed shaft 12 is correspondingly screwed A second threaded portion 121 is provided to fix the saw blade 2 to one end of the fixed shaft 12, and a third threaded portion 122 is disposed at the other end of the fixed shaft 12 for screwing the first portion. The second fixing block 15; it should be noted that a feature of the present invention is that a positioning portion 123 is disposed on the side of the second thread portion 121, and the positioning portion 123 is a polyhedral structure, as shown in the figure. The hexahedral structure is designed, and each surface of the positioning portion 123 corresponds to the position of the positioning post 1121, and the mounting block 112 corresponds to the positioning portion 123 to form a positioning groove 1122, and the positioning groove 1122 is formed correspondingly. a polygonal groove structure, as shown in the figure, the positioning groove 1122 is a hexagonal groove structure, so that the positioning portion 123 can be completely inserted into the positioning groove 1122 during assembly, and the multi-faceted fixing manner is adopted. To increase stability and safety after assembly, The central fixed shaft 12 is provided at one end of the second threaded portion 121 of the drill 3 should be provided with a mounting hole 124.

The elastic member 13 is movably disposed outside the outer sleeve 11. The elastic member 13 is flanked against the mounting block 112 at one end, and the other end of the elastic member 13 is abutted against one of the first fixing blocks 14. Resilience of the first fixed block 14.

A first screw hole 141 is defined in the center of the first fixing block 14 for being screwed on the first threaded portion 113 so that the elastic element 13 is sandwiched between the mounting block 112 and the first fixing block 14 . .

A second screw hole 151 is defined in the center of the second fixing block 15 for screwing the third threaded portion 122. The second fixing block 15 is mainly used for pulling the fixed shaft 12 to make the fixed shaft 12 correspondingly One end of the second threaded portion 121 moves toward the outer sleeve 11 and forms a mutual entanglement with the first fixing block 14 to prevent loosening during use.

As shown in FIGS. 3 to 5, the saw blade 2 is first screwed onto the second threaded portion 121 of the fixed shaft 12, and then the second fixed block 15 is rotated to operate the fixed shaft. 12 is moved toward the mounting block 112, and then the position of the saw blade 2 is adjusted to insert the pair of positioning posts 1121 into the two positioning holes 23 to form a first segment fixing. In the process, the positioning is performed. The portion 123 is completely inserted into the positioning slot 1122 of the mounting block 112. Therefore, the first segment includes the positioning posts 1121 relative to the two positioning holes 23, and the positioning portion 123 is opposite to the positioning slot 1122. And fixing, the first fixing block 14 is moved in the direction of the second fixing block 15 to form a mutual enthalpy to form a second segment fixing, and then the return elastic force of the elastic member 13 is used to abut the first The fixing block 14 is used to strengthen the mutual entanglement effect between the first fixing block 14 and the second fixing block 15, thereby achieving a stable effect when the use is strengthened.

Please refer to FIG. 6 for a schematic structural view of another preferred embodiment of the present invention. As shown in the figure, the rotary saw assembly structure 1 of the present invention further has a protective cover 16 . The protective cover 16 is provided with a through hole 161 in the center thereof. The through hole 161 is provided with a bearing 162 for inserting the outer sleeve. 11 is disposed between the elastic member 13 and the mounting block 112, and the saw blade 2 is disposed in the protective cover 165 to avoid the cutting edge 2 caused by the cutting operation 2 The debris can fly and affect the operator, and the elastic member 13 can also have the effect of adjusting the yaw angle. When used, the protective cover 16 can be attached to the surrounding surface of the construction site. on.

In summary, the rotary saw assembly 1 of the present invention is passed through the positioning posts 1121 of the mounting block 112 and the positioning holes 23 of the saw blade 2, and the positioning portion 123 and the positioning slot 1122. When the assembly is assembled, the saw blade 2 and the fixed shaft 12 are tightly assembled, and the first fixing block 14 and the second fixing block 15 are externally connected to each other, and the two sections are fixed. The effect is more stable in the construction work, and it is possible to prevent the fixed shaft and the saw blade 2 from being too tightly locked to take off the fixed shaft 12. The present invention only needs to be assembled or disassembled quickly and easily by the relative movement of the fixed shaft inside the outer sleeve 11 through the axial displacement between the first fixing block 14 and the second fixing block 15.

However, the above descriptions are only for the preferred embodiment of the present invention and are not intended to limit the scope of the present invention; therefore, the equivalent changes and modifications made without departing from the spirit and scope of the present invention should be Within the scope of this creation's patent.

1‧‧‧Rotary saw assembly structure

11‧‧‧Outer casing

111‧‧‧through passage

112‧‧‧Installation block

1121‧‧‧Positioning column

1122‧‧‧ positioning slot

113‧‧‧First threaded part

12‧‧‧Fixed shaft

121‧‧‧Second thread

122‧‧‧ Third thread

123‧‧‧ Positioning Department

124‧‧‧Mounting holes

13‧‧‧ resilient components

14‧‧‧First fixed block

141‧‧‧first screw hole

15‧‧‧Second fixed block

151‧‧‧Second screw hole

16‧‧‧ protective cover

161‧‧‧Perforation

162‧‧‧ bearing

2‧‧‧Saw blade

21‧‧‧ cutting edge

22‧‧‧ screw holes

23‧‧‧Positioning holes

3‧‧‧ drill bit

Figure 1 is an exploded perspective view of a preferred embodiment of the present invention. Figure 2 is a perspective view of the assembled preferred embodiment of the present invention. FIG. 3 is a cross-sectional view (1) of the preferred embodiment of the present invention when assembled. 4 is a cross-sectional view (2) of the preferred embodiment of the present invention when assembled. Figure 5 is a cross-sectional view (3) of the preferred embodiment of the present invention assembled. FIG. 6 is a schematic structural view of another preferred embodiment of the present invention.

Claims (5)

A rotary saw assembly structure for connecting and installing a saw blade and a drill bit, wherein the saw blade is a dome-shaped structure body, and a plurality of cutting edges are arranged on the periphery of the opening, and the center of the saw blade is provided for installation The utility model has a screw hole and a plurality of positioning holes, the rotary saw chain structure comprises: an outer sleeve having a through passage at a center thereof, and one end of the outer sleeve corresponding to the saw blade and a mounting block, the installation The pair of positioning holes are provided with a pair of positioning posts, the two positioning posts are symmetrically disposed on two sides of the through passage opposite to the surface of the mounting block, and the other end of the outer sleeve is provided with a first threaded portion; The limiting movement is disposed in the through passage of the outer sleeve, and one end of the fixed shaft is corresponding to the screw hole and a second thread portion is provided to fix the saw blade to the second thread portion, and the fixed shaft The other end is provided with a third threaded portion, and the fixed shaft is provided with a center of one end of the second threaded portion corresponding to the drill bit, and a mounting hole is disposed; an elastic element is disposed to be disposed outside the outer sleeve, and one end of the elastic member The top of the line is against the installation a first fixing block, the screw is disposed on the first thread portion, so that the elastic element is sandwiched between the mounting block and the first fixing block; and a second fixing block is screwed to the third thread And moving the fixed shaft to move toward the mounting block, and then adjusting the position of the saw blade, so that the pair of positioning posts are respectively inserted into the two positioning holes to form a first segment fixed, and The first fixing block moves toward the second fixing block to form a mutual enthalpy to form a second segment fixing, and the fixing elastic force of the elastic element is used to abut the first fixing block to enhance the fixing effect. The rotary saw assembly structure of claim 1, wherein a side of the second threaded portion is provided with a positioning portion, and the mounting block is formed with a positioning groove corresponding to the positioning portion. The rotary saw assembly structure according to claim 2, wherein the positioning portion has a polyhedral structure to correspond to a position of the positioning post, and the positioning groove correspondingly forms a polygonal groove structure. The rotary saw assembly structure according to claim 1 or 2 or 3, further comprising a protective cover, wherein the protective cover is provided with a through hole in the center to penetrate the outer sleeve and penetrate the elastic member And the mounting block clamps and holds it therebetween so that the saw blade is located in the protective cover. The rotary saw assembly structure of claim 4, wherein the perforation is provided with a bearing for inserting the outer sleeve.