CN2298920Y

CN2298920Y - Water joint of electric drill

Info

Publication number: CN2298920Y
Application number: CN 96207991
Authority: CN
Inventors: 薛军
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-04-24
Filing date: 1996-04-24
Publication date: 1998-12-02
Anticipated expiration: 2006-04-24

Abstract

The utility model discloses a joint which can be added on a hand electric drill, an impact revolving electric drill and a table drill, the utility model can transmit torsion and can transmit water or gas, and the utility model is mainly composed of a main shaft, an outer sleeve, a sealing component, a bearing, a water or gas communicating pipeline, etc. The connection of the main shaft and the output shaft of the electric drill is provided with two modes, and the connection of the main shaft and a diamond drill bit is also provided with an inner and an outer threads and two matching conical surfaces for being selected. Therefore, the utility model can be matched with diamond drill bits so as to drill or sample in concrete combine (reinforcement) means, tiles, brick walls, floor tiles, stone slab material and other building materials, and the utility model enlarges the application area of the electric drills.

Description

The electric drill water swivel

The purpose of this utility model provides a kind of configurable electric drill water swivel on electric hand drill, impact rotating electric drill and bench drill, making such electric drill can use diamond class drill bit realizes boring of construction materials such as concrete (reinforcing bar) member, ceramic tile, brick wall, floor tile and stone slab or sampling are enlarged the application of such electric drill.

Electric hand drill of the prior art, bench drill normally adopt spiral bit to hole in metal species or wooden class material and use, and it is not suitable for boring or sampling in construction materials such as brick, stone, porcelain, concrete; Though the impact rotating electric drill can use drill hammer boring, it is comprehensive boring, can not get the post sample, meets reinforcing bar and then can't bore a hole, and is for thin and crisp construction material, then broken easily as ceramic tile, floor tile etc.Use diamond class drill bit as such electric drill, then these problems just can solve.But use diamond bit need solve two technical problems.One is that electric drill must increase water flowing (or ventilation) device with cooling diamond cutting edge, washes away the cutting chip; Another is electric drill output shaft and necessary concentric stabilized seal of being connected of diamond bit, and such transformation will inevitably have influence on the original function of such electric drill, nor is beneficial to the user's who has this type of electric drill at present use.

The utility model is that above-mentioned electric drill is not being made any changes, but a not only water flowing (or ventilation) only is provided but also can connects the water swivel of diamond class drill bit, is attached on the above-mentioned electric drill, can reach the purpose that addresses the above problem.In the time will recovering electric drill use spiral bit or impact rotating drill bit, can shed water swivel easily.

The utility model be for will finish above-mentioned task, and the technical problem that needs to solve has: the 1. connected mode of water swivel and electric drill; 2. how water swivel supplies water in (or gas), and has reliable sealing; 3. how the electric drill power output is reached diamond bit, and the sealing of stable with one heart and connecting portion when keeping diamond bit to rotate.

Fig. 1 is the structure chart of electric drill water swivel

Fig. 2 is electric drill water swivel and electric hand drill assembling schematic diagram

Fig. 3 is an electric drill water swivel main shaft link (cone axis)

Fig. 4 is electric drill water swivel main shaft link (a circular or subtriangular uiform section axle)

Fig. 5 is an electric drill water swivel main shaft link (conical bore)

The water swivel schematic diagram that Fig. 6 holds for tape spool not

The structure of this electric drill water swivel is seen Fig. 1, wherein retainer ring 1, wear left alone without help 2, lever 4 connecting elements for water swivel and electric drill, can keep the water swivel working stability, and bear reaction torque, shed drift bolt, then can easily water swivel be unloaded from the electric drill output shaft; Water service pipe 8, water joint door 9 are water supply installation, water joint door 9 can communicate with external water source (or source of the gas) by plastic tube or rubber tube, enter the center water flowing eye of main shaft 3 from water service pipe 8 footpath overcoats 7 when water or gas, can lead to diamond bit, the water yield or tolerance are regulated by water joint door 9, two of alignment of shafts water flowing eyes are equipped with sealed picture 6 and 10, for keeping sealing effectiveness, the sealing ring outside is equipped with Limit Bearing 5 and 11, and main shaft and the diameter of sealing ring matching part are than the big 0.5-1 millimeter of internal diameter of the seal ring simultaneously.Bearing 5 and 11 is except having the position-limiting action sealing ring, the single action performance in the time of also can guaranteeing main shaft gyration effectively.

The electric drill output shaft is that the main shaft 3 by water swivel reaches diamond bit with power, main shaft 3 of the present utility model adopts dual mode with being connected of electric drill: a kind of is that the water swivel main shaft is connected with the electric drill output shaft, according to the electric drill output shaft end is conical bore or cone axis, and water swivel main shaft link can be designed to cone axis (Fig. 3) or conical bore (Fig. 5); Another kind of mode is when the electric drill output shaft is equipped with deck, and water swivel main shaft link is processed into the cross section and is circular or subtriangular uiform section axle (Fig. 4 a, b), direct and deck grafting (Fig. 2).

The place's of connecting design of the lower end of water swivel main shaft 3 and diamond class drill bit has the two kinds of screw threads and the conical surface: a kind of is external screw thread, thread root design male cone (strobilus masculinus), sacrificial vessel has internal thread inner conical surface joint, and diameter is that the diamond bit of 20-50 millimeter connects use, concentricity during for assurance sealing reliability and revolution, male cone (strobilus masculinus) is designed to 20-60 ° tapering; Another kind is to have internal thread inner conical surface, sacrificial vessel that external screw thread male cone (strobilus masculinus) joint is arranged in main shaft 3 lower ends designs, and diameter is that the diamond bit of 6-20 millimeter connects use, is to guarantee sealing and concentricity, and inner conical surface is designed to 60-90 ° of tapering.

Be provided with connecting thread for the electric drill outer casing end, water swivel overcoat then of the present utility model can be processed with corresponding matching thread, join with electric drill, in this case, can be without retainer ring 1, drift bolt 2, lever 4 and bearing 5 and 10, as shown in Figure 6.

The utlity model has following advantage: can support the use in interior decoration engineering and workmanship with existing multiple electric drill Process, enlarged the scope of application of existing electric drill; Internal and external threads and the conical surface connect the diamond drill machine that can be applicable to simultaneously plurality of specifications Head, bore diameter is from 6 millimeters to 50 millimeters; ((gas) path Seal Design, revolute function are reliable for water; Do not change former electric drill knot Structure; Volume is little, and is easy and simple to handle, and manufacturing cost is lower.

Claims

1. water swivel that is disposed at equipment such as electric hand drill, impact rotating electric drill and bench drill, it is characterized in that by retainer ring, drift bolt, lever connecting elements as water swivel and electric drill, form water supply installation by water service pipe, water joint door, sealing ring etc., the main shaft upper end joins with the electric drill output shaft, lower end and diamond bit join, and can realize after water flowing or the ventilation that electric drill is to boring of materials such as concrete, ceramic tile, stone material or sampling.Be provided with the electric drill of screw thread for outer casing end, the water swivel overcoat can be designed to connect screw thread directly and electric drill join, then can be without retainer ring, drift bolt, lever and bearing.

2. press claims 1 described electric drill water swivel, it is characterized in that working as the electric drill output shaft end is conical bore or cone axis, water swivel main shaft link can be designed to cone axis or conical bore connects with it.

3. press claims 1 described electric drill water swivel, it is characterized in that when the electric drill output shaft end is equipped with deck, water swivel main shaft link is processed into the cross section and is circular or subtriangular uiform section axle.