CN220778451U - Angle-adjustable tooth drill bit - Google Patents

Abstract

The utility model discloses an angle-adjustable dental drill bit, which comprises a first joint, wherein the outer side end of the first joint is hinged with a second joint, the outer side end of the second joint is hinged with a third joint, and a locking mechanism is arranged between the first joint and the second joint and at the outer side of the hinged position of the second joint and the third joint.

Description

Angle-adjustable tooth drill bit

Technical Field

The utility model relates to the technical field of tooth drills, in particular to an angle-adjustable tooth drill.

Background

The electric dental drill is basic medical equipment for stomatology, is mainly used for drilling, grinding and cutting of dental bodies, trimming and polishing of prosthesis and the like, and can also be used for periodontal surgery and dental socket surgery.

The existing electric dental drills comprise a bench type dental drill, a vertical type dental drill or a miniature dental drill, but no matter what dental drill bit is generally arranged in a fixed inclined structure with a certain angle for being conveniently inserted into the oral cavity for operation, in actual use, the size of an operation opening reserved for dentists can be different due to the fact that the width and the expansion degree of lips of a patient are different, the fixed inclined drill bit structure is convenient for being used conveniently under the condition that the expansion degree of lips of the patient is large, and some patients with smaller oral cavities can shield time when operating teeth grinding, so that the operation is inconvenient, the adaptability is low, and in view of the problems, the angle-adjustable dental drill bit is particularly provided.

Disclosure of Invention

The present utility model is directed to an angle-adjustable dental drill, which solves the above-mentioned problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the angle-adjustable tooth drill bit comprises a first joint, wherein the outer side end of the first joint is hinged with a second joint, the outer side end of the second joint is hinged with a third joint, and a locking mechanism is assembled between the first joint and the second joint and outside the hinged position of the second joint and the third joint;

the first joint comprises a handle, a motor is arranged in the handle, and a first transmission shaft is arranged at the output end of the motor;

the second joint comprises a third pipe and a fourth pipe which are assembled in a rotating way, and a transmission shaft II is assembled at the center of the third pipe and the center of the fourth pipe in a rotating way;

the joint III comprises a drill bit, and a transmission shaft III is assembled at the axis of the drill bit;

the transmission shaft I and the transmission shaft III are respectively provided with bevel gears with equal sizes at one end and two ends, an engagement bevel gear is respectively and rotatably assembled between the joint I and the joint II and at the inner side of the joint II and the joint III, and one side of each two adjacent bevel gears is engaged at the outer side of the engagement bevel gear.

Preferably, a first tube is welded to the outer portion of the grip, the transmission shaft is rotatably assembled to the output end of the motor, and a bearing rotatably assembled with the transmission shaft is assembled to the inner portion of the first tube.

Preferably, the outer side of the first pipe is rotatably provided with a second pipe, the outer part of the first pipe is in threaded connection with a first locking piece, and the second pipe is clamped at the inner gap position of the first locking piece and the first pipe.

Preferably, the outer sides of the third pipe and the fourth pipe are in threaded connection with second locking pieces, the second locking pieces are in threaded connection with the outer sides of the third pipe, and the fourth pipe is clamped at the inner gap positions of the second locking pieces and the third pipe.

Preferably, the locking mechanism comprises locking teeth, the locking teeth are welded outside hinge plates outside the second pipe and the fourth pipe, screw rods are welded outside the hinge plates inside the third pipe and the fifth pipe, locking discs are sleeved outside the screw rods, springs are assembled outside the locking discs, and locking buttons are screwed on the outer surfaces of the screw rods.

Preferably, the inner side of the locking disc is uniformly provided with locking grooves, the inner position size of each locking groove is the same as that of each locking tooth, and the cross section of each locking tooth is isosceles triangle.

Preferably, the screw penetrates the outside of the second tube and the center of the outside hinge plate of the fourth tube.

Preferably, a sliding groove is formed in the outer portion of the screw, a sliding block is integrally formed in the inner side of the locking disc, and the sliding block is sleeved in the sliding groove.

Preferably, the distance between the adjacent two bevel gears and the axle center of the meshing bevel gear is equal, and the hinging point of the meshing bevel gear and the corresponding assembly position is in a concentric state.

Compared with the prior art, the utility model has the beneficial effects that: the utility model provides a tooth drill bit with at least three joints and adjustable angles, when the tooth drill bit is used, a locking disc can be unlocked by outwards rotating a locking button, the locking disc is always attached to the direction of a locking tooth under the action of a spring, then the locking disc is rotated by a proper angle according to the depth of a patient's oral cavity, finally the locking button is rotated to lock a locking mechanism, the hinged joints are stably locked, then a power supply is started, a power supply driving motor respectively drives a transmission shaft I, a transmission shaft II and a transmission shaft III to rotate, and then a working drill bit in the drill bit can be driven to punch holes in the outer part of the tooth, so that the problems that the existing tooth drill bit used by dentists is in an arc-shaped drill bit structure, the arc shape is fixed, the observation of the drilling position is inconvenient during drilling, and the adaptation effect of the oral cavity size is poor are effectively solved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model.

FIG. 2 is a schematic view of the present utility model in a cut-away configuration.

Fig. 3 is an assembly schematic diagram of the transmission structure of the present utility model.

FIG. 4 is a schematic view of the assembly of the locking mechanism of the present utility model.

FIG. 5 is a schematic view of a rotary member of the present utility model in a cut-away assembly.

In the figure: 1. joint one, 11, grip, 12, first tube, 13, second tube, 14, first locking member, 15, drive shaft one, 2, joint two, 21, third tube, 22, fourth tube, 23, second locking member, 24, drive shaft two, 25, meshing umbrella tooth, 3, joint three, 31, drill bit, 32, fifth tube, 33, drive shaft three, 4, locking mechanism, 41, locking tooth, 42, screw, 43, locking disc, 44, spring, 45, locking knob.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, the present utility model provides a technical solution: the angle-adjustable tooth drill bit comprises a joint I1, wherein the outer side end of the joint I1 is hinged with a joint II 2, the outer side end of the joint II 2 is hinged with a joint III 3, and a locking mechanism 4 is arranged between the joint I1 and the joint II 2 and outside the hinged part of the joint II 2 and the joint III 3;

the first joint 1 comprises a handle 11, a motor is arranged in the handle 11, and a first transmission shaft 15 is arranged at the output end of the motor;

the joint II 2 comprises a third pipe 21 and a fourth pipe 22 which are assembled in a rotating way, and a transmission shaft II 24 is assembled at the center of the third pipe 21 and the center of the fourth pipe 22 in a rotating way;

the joint III 3 comprises a drill bit 31, and a transmission shaft III 33 is assembled at the axis of the drill bit 31;

one end of the first transmission shaft 15 and one end of the third transmission shaft 33 and two ends of the second transmission shaft 24 are respectively provided with bevel gears with equal sizes, an engagement bevel gear 25 is respectively assembled between the first joint 1 and the second joint 2 and at the inner side of the joint between the second joint 2 and the third joint 3 in a rotating way, and one side of each adjacent bevel gear is engaged with the outer side of the engagement bevel gear 25.

The utility model provides the tooth drill bit with at least three joints and adjustable angles, when the tooth drill bit is used, the locking disc 43 can be unlocked by outwards rotating the locking button 45, the locking disc 43 is always attached to the direction of the locking teeth under the action of the spring, then the locking mechanism 4 is locked by rotating the locking button 45 according to the depth of the oral cavity of a patient, the hinged joints are stably locked, then a power supply is started, and the power supply driving motor respectively drives the transmission shaft I15, the transmission shaft II 24 and the transmission shaft III 33 to rotate, so that the working drill bit in the drill bit 31 can be driven to punch holes on the outer part of the teeth, the problems that the existing tooth drill bit used by dentists is in an arc-shaped drill bit structure, the arc shape is fixed, the observation of the drilling position is inconvenient during drilling, and the adaptation effect of the oral cavity is poor are effectively solved.

Specifically, the first tube 12 is welded to the outer portion of the grip 11, the first transmission shaft 15 is rotatably mounted at the output end of the motor, the bearing rotatably mounted with the first transmission shaft 15 is mounted in the first tube 12, and the bearings are mounted on the outer portions of the first transmission shaft 15, the second transmission shaft 24 and the third transmission shaft 33, so that the transmission effect can be stabilized, the friction can be reduced, and the rotation speed output can be kept stable during use.

Specifically, the outer side of the first tube 12 is rotatably equipped with a second tube 13, the outer side of the first tube 12 is screwed with a first locking member 14, the second tube 13 is clamped at the inner gap position between the first locking member 14 and the first tube 12, the inner side of the grip 11 is equipped with a battery or a transformer for supplying power to the motor, and the outer side of the grip 11 is equipped with a control switch for controlling the start and stop of the motor.

Specifically, the second locking piece 23 is screwed on the outer sides of the third pipe 21 and the fourth pipe 22, the second locking piece 23 is screwed on the outer sides of the third pipe 21, the fourth pipe 22 is clamped at the inner gap positions of the second locking piece 23 and the third pipe 21, when the drill bit 31 is loosened and adjusted through the structures of the first locking piece 14 and the second locking piece 23, the third pipe, the fourth pipe 22, the first pipe 12 and the third pipe 13 can be locked respectively, the horizontal angle of the drill bit 31 is not influenced when the drill bit is locked, annular fixing rings are welded on the inner sides of the second pipe 13 and the outer edges of the inner sides of the fourth pipe 22, the first locking piece 14 and the second locking piece 23 can be screwed on the outer sides of the first pipe 11 and the third pipe 21 respectively, and the inner cavities of the first locking piece 14 and the second locking piece 23 are clamped and fixed on the fixing rings.

Specifically, the locking mechanism 4 includes locking teeth 41 welded on the outside of hinge plates on the outer side of the second tube 13 and the outer side of the fourth tube 22, a screw rod 42 is welded on the outer side of the hinge plates on the inner side of the third tube 21 and the inner side of the fifth tube 32, a locking disc 43 is sleeved on the outer side of the screw rod 42, a spring 44 is assembled on the outer side of the locking disc 43, a locking button is screwed on the outer surface of the screw rod 42, when in use, the locking button 45 can be limited to be fastened and unfastened, a clearance state or an attaching state can be kept between the locking disc 43 and the locking button 45, when in fastening, the locking groove and the locking teeth 41 are locked and cannot move, stability of the locking mechanism 4 is maintained, when in unfastening, the hinge plates of the joints rotate to drive the locking teeth 41 to rotate, so that the locking disc 43 can be passively driven to jump outwards beyond the locking teeth 41 until a proper angle is reached through an isosceles triangle structure;

the outer sides of the locking disc 43 and the two hinge points are respectively printed with angle scales and standard indication lines, the angles are determined to be rotated through the correspondence between the scale lines and the indication line positions, and the locking device 4 locks the locking disc after being qualified.

Specifically, the locking grooves are uniformly formed on the inner side of the locking plate 43, and the inner position dimensions of the locking grooves are the same as those of the locking teeth 41, and the cross section of the locking teeth 41 is isosceles triangle.

Specifically, the screw is rotatably fitted in the inner center of the hinge plate through the engagement bevel gear 25 at the center of the hinge plate at the outer side of the second pipe 13 and the outer side of the fourth pipe 22, so that the shaft center position of the bevel gear and the shaft center position of the engagement bevel gear 25 are unchanged even when the angles of the bevel gears at both sides are changed during the mutual engagement of at least three bevel gears at the joint position, and thus the complete output rotation speed can be achieved when the motor rotates.

Specifically, the outside of screw rod 42 has seted up the spout, and the inboard integrated into one piece of locking dish 43 has the slider, the slider cup joints in the inside of spout, utilize the effect of slider and spout, the relative straight line slip of locking dish 43 of being convenient for, the inboard and the screw rod 42 welded fastening of two articulated pieces that constitute the joint, consequently locking dish 43 is static for inboard articulated piece, consequently the articulated piece of outside and the locking tooth 41 of fixing outside articulated piece can rotate for locking dish 43, through the cooperation of slider and spout, locking dish 43 can't be static relatively with locking tooth 41, and then can realize jumping unlocking adjustment, the purpose of being static relatively after the locking.

Specifically, the adjacent two bevel gears are equidistant from the axis of the engagement bevel gear 25, and the hinge points of the engagement bevel gear and the corresponding assembly position are concentric.

The hinge points are sealed by covering the outside of the hinge positions of the first joint 1 and the second joint 2 and the outside of the hinge positions of the second joint 2 and the third joint 3 with a silicone jacket layer, and as shown in fig. 5, the hinge plate indicated in the present utility model is a circular sheet-like structure outside the fourth tube 22 shown in the figure, and the outside of the fourth tube 22 is used for opening or welding the locking teeth 41.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (9)

1. An angle-adjustable dental drill bit, comprising a joint I (1), characterized in that: the outer side end of the joint I (1) is hinged with a joint II (2), the outer side end of the joint II (2) is hinged with a joint III (3), and a locking mechanism (4) is arranged between the joint I (1) and the joint II (2) and outside the hinged part of the joint II (2) and the joint III (3);

the joint I (1) comprises a handle (11), a motor is arranged in the handle (11), and a transmission shaft I (15) is arranged at the output end of the motor;

the joint II (2) comprises a third pipe (21) and a fourth pipe (22) which are assembled in a rotating way, and a transmission shaft II (24) is assembled at the center of the third pipe (21) and the center of the fourth pipe (22) in a rotating way;

the joint III (3) comprises a drill bit (31), and a transmission shaft III (33) is assembled at the axis of the drill bit (31);

the one end of transmission shaft one (15) and transmission shaft three (33) and the both ends of transmission shaft two (24) are equipped with equidimension bevel gears, between joint one (1) and joint two (2) and joint three (3) articulated department inboard rotate respectively and assemble one meshing bevel gear (25), and one side of two adjacent bevel gears all meshes in the outside of meshing bevel gear (25).

2. An angularly adjustable dental drill according to claim 1, wherein: the handle (11) is welded with a first pipe (12) at the outer part, the first transmission shaft (15) is rotatably assembled at the output end of the motor, and a bearing rotatably assembled with the first transmission shaft (15) is assembled in the first pipe (12).

3. An angularly adjustable dental drill according to claim 2, wherein: the outside of first pipe (12) rotates and is equipped with second pipe (13), the outside spiro union of first pipe (12) has first locking piece (14), second pipe (13) centre gripping is in the inside gap position of first locking piece (14) and first pipe (12).

4. An angularly adjustable dental drill according to claim 1, wherein: the outer sides of the third pipe (21) and the fourth pipe (22) are in threaded connection with a second locking piece (23), the second locking piece (23) is in threaded connection with the outer side of the third pipe (21), and the fourth pipe (22) is clamped at the inner gap position between the second locking piece (23) and the third pipe (21).

5. An angularly adjustable dental drill according to claim 2, wherein: the locking mechanism (4) comprises locking teeth (41), the locking teeth are welded outside hinge plates outside the second pipe (13) and the fourth pipe (22), a screw rod (42) is welded outside the hinge plates inside the third pipe (21) and the fifth pipe (32), a locking disc (43) is sleeved outside the screw rod (42), a spring (44) is assembled outside the locking disc (43), and a locking button is screwed on the outer surface of the screw rod (42) outside the spring.

6. An angularly adjustable dental drill according to claim 5, wherein: locking grooves are uniformly formed in the inner side of the locking disc (43), the inner position size of each locking groove is identical to that of each locking tooth (41), and the cross section of each locking tooth (41) is isosceles triangle.

7. An angularly adjustable dental drill according to claim 5, wherein: the screw penetrates the outer side of the second pipe (13) and the center of the outer side hinge plate of the fourth pipe (22).

8. An angularly adjustable dental drill according to claim 5, wherein: the outside of screw rod (42) has seted up the spout, and the inboard integrated into one piece of locking dish (43) has the slider, the slider cup joints the inside at the spout.

9. An angularly adjustable dental drill according to claim 1, wherein: the distance between the adjacent two bevel gears and the axle center of the meshing bevel gear (25) is equal, and the hinging point of the meshing bevel gear and the corresponding assembling position is in a concentric state.