CN2339170Y

CN2339170Y - Desk dental engine

Info

Publication number: CN2339170Y
Application number: CN 98220840
Authority: CN
Inventors: 杨守成
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-16
Filing date: 1998-04-16
Publication date: 1999-09-22
Anticipated expiration: 2008-04-16

Abstract

The utility model relates to a desk dental engine. The utility model is characterized in that a flexible shaft and a hollow chuck 7 used for transferring the power of the motor are successively arranged from a motor 18 to a contra-angle handpiece. The hollow chuck 7 is composed of a front chuck 7a and a rear chuck 7b, which are mutually communicated and coaxial, and the rear part of a bend connector 20 is clamped and connected with the front part of the front chuck 7a. A rear long shaft 6 and the front chuck 7a have the coaxial line, and the rear part of the rear long shaft 6 is arranged in the front chuck 7a. The front end and the rear end of the wire flexible shaft 12 of the flexible shaft are respectively connected with the back end of the rear long shaft 6 and the shaft of the motor 18c. The front end and the rear end of the flexible hose 15 of the flexible shaft are connected with the rear chuck 7b and the motor 18. The utility model has the advantages of simple structure and low cost.

Description

Desk type dental drill engine

This utility model relates to a kind of dentistry drilling machine, particularly relates to a kind of desk type dental drill engine.

Existing desk type dental drill engine, mainly constitute by motor, support, three curved booms, straight handpiece, machine rope, contra-angle handpiece, a part surplus three curved booms comprise 50, a part and contra-angle handpiece must be installed on the straight handpiece and can use surplus straight handpiece comprised 10, therefore, existing desk type dental drill engine, its complex structure, cost height.

The purpose of this utility model is to provide a kind of simple in structure, desk type dental drill engine that cost is low.

The purpose of this utility model is achieved through the following technical solutions:

The desk type dental drill engine that this utility model provides, it comprises motor 18, the contra-angle handpiece that has bent sub 20 and back major axis 6, its construction features is: motor 18 is to being provided with flexible axle and the hollow chuck 7 that can be used to transmit motor power between contra-angle handpiece successively, hollow chuck 7 is by mutual UNICOM and co-axial preceding chuck 7a, back chuck 7b constitutes, the rear portion of bent sub 20 engages connection with the front portion of preceding chuck 7a, back major axis 6 is with preceding chuck 7a coaxial line and deploy thereafter in preceding chuck 7a, the front end of Bowden cable 12 in the flexible axle, the rear end respectively with the back major axis 6 the rear end, motor shaft 18c links, the front end of flexible pipe 15 in the flexible axle, the rear end respectively with back chuck 7b, motor 18 links.

By above technical scheme as seen, motor 18 is to being provided with flexible axle and the hollow chuck 7 that can be used to transmit motor power between contra-angle handpiece successively, contra-angle handpiece is installed on the preceding chuck 7a by the bent sub on it 20, back major axis 6 is with preceding chuck 7a coaxial line and deploy thereafter in preceding chuck 7a, the front end of Bowden cable 12 in the flexible axle, the rear end respectively with the back major axis 6 the rear end, motor shaft 18c links, the front end of flexible pipe 15 in the flexible axle, the rear end respectively with back chuck 7b, motor 18 links, like this, the power of motor 18 just can be passed to back major axis 6 and be made contra-angle handpiece work by Bowden cable 12, contra-angle handpiece palpus dependence three curved booms and straight handpiece that this measure has changed in the existing desk type dental drill engine transmit the traditional approach of motor power ability work, flexible axle and hollow chuck 7 is simple in structure in addition, cost is low, therefore, the utlity model has simple in structure, the advantage that cost is low.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

The utility model is described in further detail below in conjunction with drawings and Examples:

Referring to Fig. 1, this desk type dental drill engine mainly is to be made of the motor 18, flexible axle, the hollow chuck 7 that connect successively, the contra-angle handpiece that has bent sub 20 and a back major axis 6:

Motor 18 is outer have one can with the hollow round platform 18a of motor shaft 18c coaxial line, an affixed inside has the flexible shaft end 18b of square counterbore on the termination of motor shaft 18c, the dead in line of the centrage of described square counterbore and motor shaft 18c, the termination of motor shaft 18c and flexible shaft end 18b all are positioned at hollow round platform 18a;

Flexible axle is by flexible pipe 15, Bowden cable 12, hose coupling 11, hose coupling 16, two springs 14, nut 17, stop 13 compositions of circle, Bowden cable 12 places in the flexible pipe 15 and its front end, the cross section of follower head is square, hose coupling 11, hose coupling 16 respectively with the front end of flexible pipe 15, the rear end is affixed, two springs 14 that play 15 effects of protection flexible pipe are set in flexible pipe 15 and hose coupling 11, the connection place of hose coupling 16, nut 17 is sleeved on the hose coupling 16, stops that circle 13 is installed in the anterior of Bowden cable 12 and leans with round platform 11a in the hose coupling 11;

Hollow chuck 7 is made of mutual UNICOM and co-axial preceding chuck 7a, back chuck 7b, preceding chuck 7a is the ladder pipe that a front portion is shaped on planar annular 7a ', the front portion of preceding chuck 7a also is provided with a contra-angle handpiece hold-down screw 19, the rear portion of preceding chuck 7a is shaped on external screw thread, and back chuck 7b is the cylinder that an inside is shaped on screw thread;

Contra-angle handpiece mainly comprises contra-angle handpiece shell combination 1, middle gear 2, backgear 3, pin 4, collar 5, back major axis 6, bent sub 20, the self structure of contra-angle handpiece shell combination 1, middle gear 2, backgear 3, pin 4, collar 5, bent sub 20 and mutual connecting mode are all identical with existing contra-angle handpiece, and back major axis 6 is also identical with existing contra-angle handpiece with the connecting mode of bent sub 20, backgear 3, pin 4;

The rear portion of bent sub 20 engages connection with the front portion of preceding chuck 7a, the rear end ring surface 20a of bent sub 20 and the planar annular 7a ' on the preceding chuck 7a lean, and the breach 20b of bent sub 20 rear ends and contra-angle handpiece hold-down screw 19 tablings, back major axis 6 is with preceding chuck 7a coaxial line and deploy thereafter in preceding chuck 7a, an affixed inside has the flexible shaft end 9 of square counterbore on the follower head of back major axis 6, the dead in line of the centrage of described square counterbore and back major axis 6, the front end of Bowden cable 12, the rear end respectively with flexible shaft end 9, flexible shaft end 18b pegs graft, hose coupling 11 spins with back chuck 7b, after the annular end face 16a of hose coupling 16 and the annular end face 18a ' of hollow round platform 18a reclined, nut 17 spun with hollow round platform 18a;

Be associated with on the preceding chuck 7a at bent sub 20 rear portions and be with the protective sleeve 8 that a rear portion is shaped on female thread, protective sleeve 8 is fixed by itself and spinning of preceding chuck 7a, also is with a packing ring 10 on the preceding chuck 7a, and this packing ring 10 is between protective sleeve 8 and back chuck 7b.

When flexible pipe 15 because of boring requirements of one's work when crooked, the Bowden cable 12 anterior set circles 13 that stop can prevent effectively that the front end of Bowden cable 12 from skidding off from flexible shaft end 9, thereby can guarantee normal use of the present utility model.

Claims

1, desk type dental drill engine, it comprises motor 18, the contra-angle handpiece that has bent sub 20 and back major axis 6, it is characterized in that: motor 18 is to being provided with flexible axle and the hollow chuck 7 that can be used to transmit motor power between contra-angle handpiece successively, hollow chuck 7 is by mutual UNICOM and co-axial preceding chuck 7a, back chuck 7b constitutes, the rear portion of bent sub 20 engages connection with the front portion of preceding chuck 7a, back major axis 6 is with preceding chuck 7a coaxial line and deploy thereafter in preceding chuck 7a, the front end of Bowden cable 12 in the flexible axle, the rear end respectively with the back major axis 6 the rear end, motor shaft 18c links, the front end of flexible pipe 15 in the flexible axle, the rear end respectively with back chuck 7b, motor 18 links.

2, desk type dental drill engine according to claim 1, it is characterized in that: preceding chuck 7a is the ladder pipe that a front portion is shaped on planar annular 7a ', the rear end ring surface 20a of bent sub 20 and the planar annular 7a ' on the preceding chuck 7a lean, back chuck 7b is the cylinder that an inside is shaped on screw thread, the front end of flexible pipe 15, the rear end is installed with hose coupling 11 respectively, hose coupling 16, also be with a nut 17 on the hose coupling 16, Bowden cable 12 front ends, the cross section of follower head is square, an affixed inside has the flexible shaft end 9 of square counterbore on the follower head of back major axis 6, the dead in line of the centrage of described square counterbore and back major axis 6, motor 18 is outer have one can with the hollow round platform 18a of motor shaft 18c coaxial line, an affixed inside has the flexible shaft end 18b of square counterbore on the termination of motor shaft 18c, the dead in line of the centrage of described square counterbore and motor shaft 18c, the termination of motor shaft 18c and flexible shaft end 18b all are positioned at hollow round platform 18a, the front end of Bowden cable 12, the rear end respectively with flexible shaft end 9, flexible shaft end 18b pegs graft, hose coupling 11 spins with back chuck 7b, after the annular end face 16a of hose coupling 16 and the annular end face 18a ' of hollow round platform 18a reclined, nut 17 spun with hollow round platform 18a.

3, desk type dental drill engine according to claim 1 and 2; it is characterized in that: the front portion of preceding chuck 7a also is provided with a contra-angle handpiece hold-down screw 19; the breach 20b of bent sub 20 rear ends and contra-angle handpiece hold-down screw 19 tablings; the rear portion of preceding chuck 7a is shaped on external screw thread; be associated with on the preceding chuck 7a at bent sub 20 rear portions and also be with the protective sleeve 8 that a rear portion is shaped on female thread, protective sleeve 8 is fixed by itself and spinning of preceding chuck 7a.