WO2022032602A1

WO2022032602A1 - Convenient to disassemble combined tapper

Info

Publication number: WO2022032602A1
Application number: PCT/CN2020/109039
Authority: WO
Inventors: 黄磊
Original assignee: 苏州迈卡孚工业科技有限公司
Priority date: 2020-08-12
Filing date: 2020-08-14
Publication date: 2022-02-17
Also published as: CN111822749A; DE202020106202U1

Abstract

Disclosed is a convenient to disassemble combined tapper, comprising a clamping sleeve; a positioning block is provided on a side wall of the clamping sleeve, and a hole-opening drill is provided with a groove into which the positioning block is inserted; the groove comprises an intake groove and a positioning groove which communicate with one another; the intake groove is provided with a barrier block, and the barrier block is provided with an elastic member; the elastic member drives the barrier block to move towards an opening portion of the intake groove; and the barrier block is provided with a handle shifting lever which extends out of the hole-opening drill. In the combined tapper of the present invention, a center drill is clamped to the clamping sleeve, the clamping sleeve is installed within the groove of the hole-opening drill by means of the positioning block, the groove is provided with the L-shaped intake groove and the positioning groove, the intake groove is provided with the barrier block for preventing the positioning block from falling off (preventing the center drill from falling off), the barrier block achieves automatic pop-up blocking by means of the elastic member, and only the hand shifting lever needs to be pressed down when disassembling to enable the positioning block to slide out from within the intake groove.

Description

Combined hole saw for easy removal

technical field

The invention belongs to the technical field of electric tools, in particular to a combined hole opener.

Background technique

Hole opener is a kind of circular saw for cutting circular holes. It can open holes in metal, wood, plastic, glass, stone and other materials. Because of its simple and flexible operation, easy portability, and extremely wide range of uses.

The existing hole opener is mainly composed of a center drill and a hole drill, and the two are generally made into an integrated structure by welding and other processes, or the split installation structure is locked with a nut. All of them are invalid. When the split structure is locked with a nut, it is very inconvenient to install, and the locking of the thread is also easy to loosen.

SUMMARY OF THE INVENTION

The main technical problem solved by the present invention is to provide a combined hole opener that is easy to disassemble. The center drill is clamped to a clamping sleeve, and the clamping sleeve is installed in the groove of the hole drilling drill through a positioning block. The groove is provided with a " L"-shaped entrance groove and positioning groove, and the entrance groove is provided with a blocking block to prevent the positioning block from falling off (that is, to prevent the center drill from falling off). The rod is pressed down so that the positioning block can slide out from the inlet slot.

In order to solve the above-mentioned technical problems, a technical scheme adopted by the present invention is as follows:

A combined hole saw that is easy to disassemble, comprising a center drill and a hole drill, the hole drill is detachably connected to the center drill, and also includes a clamping sleeve, the center drill passing through the clamping sleeve a sleeve, and is fixedly connected with the clamping sleeve, and the hole drill has a central hole for installing the clamping sleeve;

The side wall of the clamping sleeve is provided with a positioning block, and the opening is drilled with a groove into which the positioning block can be inserted. The positioning groove forms an "L" shape, the entrance groove is provided with a blocking block, and the blocking block is provided with an elastic piece, the elastic piece drives the blocking block to move toward the mouth of the entrance groove, and the blocking block is After the elastic piece is compressed, the blocking block can move to the bottom of the inlet groove, and the blocking block has a hand lever extending out of the hole drill.

Further, there are two positioning blocks, the two positioning blocks are arranged symmetrically, and the grooves are located on opposite sides of the central hole.

Further, the positioning block and the clamping sleeve are separate structures, and the positioning block is connected to the clamping sleeve by interference.

Further, the elastic member is a helical compression spring.

Further, the clamping sleeve is a steel clamping sleeve, and the clamping sleeve and the central hole are connected by transition fit.

Further, the center drill is fixedly connected to the clamping sleeve by screws.

More specifically, the bottom of the inlet groove has an accommodating groove for accommodating the blocking block.

Beneficial effects of the present invention:

In the combined hole punch of the present invention, the center drill is clamped to a clamping sleeve, the clamping sleeve is installed in the groove of the hole drilling drill through the positioning block, and the groove is provided with an "L"-shaped inlet groove and a positioning groove, and The entrance groove is provided with a blocking block to prevent the positioning block from falling off (that is, to prevent the center drill from falling off). The blocking block can be automatically bounced up and blocked by an elastic piece. When disassembling, it is only necessary to press down the hand lever so that the positioning block can be removed from the entrance. You can slide it out of the slot, fast and convenient.

The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly, and implement it according to the content of the description, the preferred embodiments of the present invention are described in detail below with the accompanying drawings.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the hole opener of the present invention;

Fig. 2 is the exploded structure schematic diagram of the hole opener of the present invention;

Fig. 3 is the structural representation of the clamping sleeve of the present invention;

Fig. 4 is the enlarged view of A part of Fig. 2 (blocking block exploded state);

Fig. 5 is the enlarged view of A part of Fig. 2 (blocking block combined state);

The parts in the attached drawings are marked as follows:

Center drill 1, drilling drill 2, groove 21, inlet groove 211, receiving groove 2111, positioning groove 212, blocking block 213, hand lever 2131, center hole 22, clamping sleeve 3 and positioning block 31.

detailed description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be more clearly defined.

Example:

A combined hole saw that is easy to disassemble, as shown in Figures 1 to 5: including a center drill 1 and a hole drill 2, the hole drill is detachably connected to the center drill, and also includes a clamping sleeve 3 , the center drill is sleeved through the clamping sleeve, and is fixedly connected with the clamping sleeve, and the hole drill has a center hole 22 for installing the clamping sleeve;

The side wall of the clamping sleeve is provided with a positioning block 31, and the hole is drilled with a groove 21 into which the positioning block can be inserted. The inlet slot and the positioning slot form an "L" shape, the inlet slot is provided with a blocking block 213, and the blocking block is provided with an elastic piece (not shown in the figure), and the elastic piece drives the blocking block toward the The mouth of the inlet slot moves, and after the elastic member is compressed, the blocking block can move to the bottom of the inlet slot, and the blocking block has a hand lever 2131 extending out of the hole drill.

In the combined hole punch of the present invention, the center drill is clamped to a clamping sleeve, the clamping sleeve is installed in the groove of the hole drilling drill through the positioning block, and the groove is provided with an "L"-shaped inlet groove and a positioning groove, and The entrance groove is provided with a blocking block to prevent the positioning block from falling off (that is, to prevent the center drill from falling off). The blocking block can be automatically bounced up and blocked by an elastic piece. When disassembling, it is only necessary to press down the hand lever so that the positioning block can be removed from the entrance. Slide out of the slot.

In this embodiment, there are two positioning blocks, the two positioning blocks are symmetrically arranged, the grooves are located on opposite sides of the central hole, and the arrangement of the two positioning blocks can provide better stability , to better ensure the connection between the clamping sleeve and the hole drill.

The positioning block and the clamping sleeve are separate structures, and the positioning block is connected to the clamping sleeve by interference.

The positioning block and the clamping sleeve of the split structure are convenient for the production and processing of the two, and the structure of the interference connection ensures the stability of the connection, and the assembly is simple and fast.

In this embodiment, the elastic member is a helical compression spring.

The clamping sleeve is a steel clamping sleeve, and the clamping sleeve and the central hole are connected by transition fit. The steel clamping sleeve can provide better rigidity to obtain stable clamping. The transition fit of the center hole can prevent the shaking of the clamping sleeve and the center drill after installation, and improve the stability.

The center drill is fixedly connected to the clamping sleeve by screws. As shown in FIG. 3 , the side wall of the clamping sleeve is provided with threaded holes.

The bottom of the inlet groove has a receiving groove 2111 that can receive the blocking block.

When the blocking block is in the accommodating groove, a passage for the fixed block to move can be provided. Of course, it is also possible not to provide the accommodating groove, and the positioning groove can be made wider.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated azimuth or position relationship is based on the azimuth or position relationship recorded in the embodiment and shown in the accompanying drawings, or the azimuth or position relationship that is usually placed when the product of the invention is used, which is only for the convenience of describing the present invention and simplifying the description, It is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

The working principle of the present invention is as follows:

The combined hole opener of the present invention clamps the center drill to a clamping sleeve during use, and the clamping sleeve is installed in the groove of the hole drilling drill through the positioning block, and the groove is provided with an "L"-shaped inlet groove and a positioning block slot, and the entrance slot is provided with a blocking block to prevent the positioning block from falling off (that is, to prevent the center drill from falling off). The inlet slot can be slid out.

The above descriptions are only the embodiments of the present invention, and are not intended to limit the scope of the patent of the present invention. Any equivalent structural transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied to other related technical fields, are the same as The principles are included in the scope of patent protection of the present invention.

Claims

A combined hole opener that is easy to disassemble, comprising a center drill (1) and a hole drill (2), the hole drill and the center drill being detachably connected, and characterized in that it includes a clamping sleeve (3) , the center drill is sleeved through the clamping sleeve and is fixedly connected with the clamping sleeve, and the hole drilling drill has a center hole (22) for installing the clamping sleeve;

The side wall of the clamping sleeve is provided with a positioning block (31), the hole is drilled with a groove (21) into which the positioning block can be inserted, and the groove includes an inlet groove (211) that communicates with each other. and a positioning slot (212), the inlet slot and the positioning slot form an "L" shape, the inlet slot is provided with a blocking block (213), the blocking block is provided with an elastic piece (214), and the elastic piece The blocking block is driven to move toward the mouth of the inlet slot, and after the elastic member is compressed, the blocking block can move to the bottom of the inlet slot, and the blocking block has a protruding hole extending out of the hole drill. Hand lever (2131).
The combined hole opener according to claim 1, characterized in that: there are two positioning blocks, the two positioning blocks are symmetrically arranged, and the grooves are located at two opposite sides of the central hole. side.
The combined hole opener according to claim 1, wherein the positioning block and the clamping sleeve are separate structures, and the positioning block is connected to the clamping sleeve by interference.
The easy-to-remove combined hole opener according to claim 1, wherein the elastic member is a helical compression spring.
The combined hole opener according to claim 1, wherein the clamping sleeve is a steel clamping sleeve, and the clamping sleeve and the central hole are connected by transition fit.
The easy-to-remove combined hole saw according to claim 1, wherein the center drill is fixedly connected to the clamping sleeve by means of screws.
The easy-to-remove combined hole opener according to claim 1, characterized in that: the groove bottom of the inlet groove has an accommodating groove (2111) for accommodating the blocking block.