CN209899610U - Bending machine head convenient for maintaining conducting strip - Google Patents

Abstract

The utility model discloses a curved aircraft nose convenient to maintain conducting strip, it includes aircraft nose shell, aircraft nose lid, conductive substrate, conducting strip, core assembly, conductive substrate fixed mounting is in the aircraft nose shell, core assembly rotates to be connected in the aircraft nose shell, conducting strip detachably connects on the aircraft nose shell, the conducting strip is by outer to interior aircraft nose shell, conductive substrate and conflict each other with core assembly of passing in proper order, form the conduction circuit that is linked together with cutting tool between aircraft nose shell, core assembly, conducting strip and the conductive substrate. The utility model discloses a curved aircraft nose has the effect that maintenance, test signal transmission are stable of being convenient for.

Description

Bending machine head convenient for maintaining conducting strip

Technical Field

The utility model relates to a dentistry treatment equipment field, it is very much, relate to a curved aircraft nose convenient to maintain conducting strip.

Background

An apparatus is known which allows to perform a root canal treatment and simultaneously perform a root canal measurement, using an excavation tool, such as a file or a dental drill, which also serves as a measuring probe. In this case, since the excavation tool serves as one electrode of the root canal length measuring circuit, the measuring signal needs to be transmitted to the excavation tool.

Some bent heads with root canal length measurement function integrate the conducting circuit inside the head, rely on the self elasticity of conducting strip to embrace the pivot and ensure that test signal can transmit to surely dig the instrument when rotatory. However, due to long-time rotation friction, impurities are generated at the friction position, so that the contact between the rotating shaft and the conducting strip is bad, and the transmission of the test signal is influenced. And because the integrated in aircraft nose, ordinary user can't maintain the bad problem of contact at the professional instrument of not having and do not possess professional ability.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a curved aircraft nose convenient to maintain conducting strip.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a curved aircraft nose convenient to maintain conducting strip, includes aircraft nose shell, aircraft nose lid, conductive substrate, conducting strip, core assembly, conductive substrate fixed mounting is in the aircraft nose shell, core assembly rotates to be connected in the aircraft nose shell, conducting strip detachably connects on the aircraft nose shell, the conducting strip is by outer to interior aircraft nose shell, conductive substrate and conflict each other with core assembly of passing in proper order, form the conduction circuit that is linked together with cutting tool between aircraft nose shell, core assembly, conducting strip and the conductive substrate.

Through adopting above-mentioned technical scheme, when needs carry out root canal length measurement, these four metal parts of aircraft nose shell, pivot, conducting strip, electrically conductive base can form the conduction circuit and transmit measuring signal to cutting tool. Conducting strip detachably connects on the aircraft nose shell, when needing to maintain, can take out the conducting strip and maintain or change, and is very convenient.

Further, the core assembly comprises a core turbine and a rotating shaft driven by the core turbine to rotate, the rotating shaft is supported in the handpiece shell through a bearing piece, the bearing piece comprises a front end bearing and a rear end bearing, and a cutting tool is fixed at the bottom end of the rotating shaft.

Further, the aircraft nose shell is provided with the mounting hole that supplies the conducting strip dismouting, inlay in the mounting hole and be equipped with the conducting strip lid, the conducting strip is covered and is worn to be equipped with the screw, the screw passes conducting strip lid and conducting strip in proper order and fixed with electrically conductive base, the conducting strip passes electrically conductive base and contacts with pivot or cutting tool's stalk portion.

Through adopting above-mentioned technical scheme, the dismouting maintenance of conducting strip has been made things convenient for in the setting of mounting hole, and the setting of conducting strip lid then is used for realizing the effect that compresses tightly to the conducting strip to the shutoff effect of mounting hole, reduce the possibility that impurity such as external dust got into the aircraft nose shell along the mounting hole, and then reduced the possibility that core assembly corrosion damaged, prolonged core assembly's life. When needing to maintain, we can unscrew the screw through a word screwdriver, then take off the conducting strip lid, just can take out the conducting strip and maintain or change, very convenient need very professional instrument, easy operation is convenient.

Furthermore, the conducting strip is of a U-shaped elastic sheet structure and comprises a pressing portion and two pin connecting portions, the pressing portion is fixed on the outer wall of the conducting base through a screw in a fitting mode, the distance between the two pin connecting portions is smaller than the outer diameter of the rotating shaft, and the two pin connecting portions penetrate through the conducting base and are attached to the outer wall of the rotating shaft in an encircling mode.

Through adopting above-mentioned technical scheme, the distance of conducting strip both ends pin connecting portion is less than the pivot diameter, need during the assembly to prop electrically conductive brush big, because conducting strip self elasticity conducting strip can tightly paste the pivot afterwards. The structure is simple and convenient to install.

Furthermore, one side of the pin connecting part facing the rotating shaft is provided with an arc-shaped section, and the two pin connecting parts are mutually attached to the rotating shaft through respective arc-shaped sections.

Through adopting above-mentioned technical scheme, the area of contact of conducting strip with the pivot has been increased in setting up of segmental arc for the electric connection of the two is more stable.

Further, the outer wall of the conductive base is provided with a groove for embedding the pressing part, and the pressing part is embedded in the groove and is fixedly attached to the conductive base through a screw and a conductive sheet cover.

Through adopting above-mentioned technical scheme, the portion of compressing tightly inlays to establish and fixes in electrically conductive base, has realized the firm connection between conducting strip and the electrically conductive base, has improved the stability that the two electricity is connected.

Further, electrically conductive base sets up to the semicircle ring-type, electrically conductive base outer wall is provided with vertical card strip, aircraft nose shell inner wall is provided with the spacing draw-in groove that supplies vertical card strip to peg graft, electrically conductive base is through vertical card strip and spacing draw-in groove fixed mounting in the aircraft nose shell.

Through adopting above-mentioned technical scheme, vertical card strip and the setting of spacing draw-in groove have realized the fixed of electrically conductive base to the possibility that prevents electrically conductive base and take place to deflect.

Furthermore, a limiting boss for lapping the conductive base is arranged in the handpiece shell, and the front end bearing is arranged below the limiting boss and is not in contact with the conductive base.

Through adopting above-mentioned technical scheme, electrically conductive base bottom is contradicted on spacing boss, has realized electrically conductive base's location installation.

Furthermore, the machine head cover is connected to the machine head shell in a threaded mode, and a waveform gasket is arranged at the bottom of the front end bearing.

Through adopting above-mentioned technical scheme for realize the sealed of front end bearing, reduce impurity such as bits and the like and get into the possibility of front end bearing.

To sum up, the utility model discloses a beneficial technological effect does:

1. the detachable conducting plate is adopted, when maintenance is needed, a screw can be unscrewed through a straight screwdriver, the conducting plate cover is taken off, then the conducting plate can be taken out for maintenance or replacement, and the multifunctional screw driver is very convenient and does not need a very professional tool;

2. the distance at conducting strip both ends is less than the pivot diameter, and it is big to prop electrically conductive brush during the assembly, because conducting strip self elasticity conducting strip can tightly paste tight pivot afterwards, this simple structure, the production and processing of being convenient for to quick installation has been realized.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic sectional structure of the present invention.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

Fig. 4 is an explosion diagram for embodying the structure of the limiting slot of the present invention.

Fig. 5 is an exploded view of the present invention for illustrating the structure of the mounting hole.

In the figure, 1, a handpiece shell; 11. mounting holes; 12. a limiting clamping groove; 13. a limiting boss; 2. a nose cover; 3. a conductive base; 31. longitudinal clamping strips; 4. a conductive sheet; 41. a pressing part; 42. a pin connection part; 43. an arc-shaped section; 5. a movement assembly; 51. a core turbine; 52. a rotating shaft; 53. a front end bearing; 54. a rear end bearing; 6. a conductive sheet cover; 7. a screw; 8. a wave shaped gasket.

Detailed Description

The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and merely illustrates the basic structure of the present invention in a schematic manner, and therefore it shows only the constitution related to the present invention.

Referring to fig. 1 to 5, for the utility model discloses a bending machine head convenient to maintain conducting strip, including aircraft nose shell 1, aircraft nose lid 2, conductive base 3, conducting strip 4, core assembly 5. The nose cover 2 is in threaded connection with the nose shell 1, and after the conductive base 3 and the core assembly 5 are installed in the nose shell 1, the nose shell 1 is plugged through the nose cover 2.

Referring to fig. 3 and 4, the conductive base 3 is semicircular, the outer wall of the conductive base 3 is provided with a longitudinal clamping strip 31, the inner wall of the handpiece shell 1 is provided with a limiting clamping groove 12 for the longitudinal clamping strip 31 to be inserted, and the conductive base 3 is fixedly installed in the handpiece shell 1 through the longitudinal clamping strip 31 and the limiting clamping groove 12. A limiting boss 13 for lapping the conductive base 3 is arranged in the machine head shell.

Referring to fig. 3 and 4, the movement assembly 5 includes a movement turbine 51 and a rotating shaft 52 driven by the movement turbine 51 to rotate, the rotating shaft 52 is supported in the handpiece housing 1 through a bearing member, the bearing member includes a front end bearing 53 and a rear end bearing 54, and the front end bearing 53 is disposed below the limit boss 13 and does not contact with the conductive base 3. The bottom of the front end bearing 53 is provided with a wave-shaped gasket 8 for preventing the bearing from vibrating axially, and the bottom end of the rotating shaft 52 is fixed with a cutting tool. The handpiece shell 1, the rotating shaft 52, the conducting strip 4 and the conducting base 3 are all made of metal materials, and when the length of the root canal needs to be measured, the four metal parts can form a conducting circuit to transmit a measuring signal to a cutting tool.

Referring to fig. 5, a mounting hole 11 for mounting and dismounting the conducting strip 4 is formed in the handpiece shell 1, the conducting strip 4 penetrates through the mounting hole 11 and is fixed with the conducting base 3 through a screw 7, a conducting strip cover 6 is embedded in the mounting hole 11, and the conducting strip cover 6 is pressed on the outer side wall of the conducting strip 4 so as to realize the stable connection of the conducting strip 4 and the conducting base 3. The end of the conductive plate 4 away from the screw 7 penetrates the conductive base 3 and contacts the outer side wall of the shank or spindle 52 of the cutting tool to form a conductive circuit to transmit the measurement signal to the cutting tool.

Referring to fig. 5, preferably, the conducting strip 4 is configured as a U-shaped spring structure, the distance between the two ends of the conducting strip 4 is smaller than the diameter of the rotating shaft 52, the conducting brush needs to be expanded during assembly, and then the conducting strip 4 tightly clings to the rotating shaft 52 due to the elasticity of the conducting strip 4. The conducting plate 4 comprises a pressing part 41 and two pin connecting parts 42, the outer wall of the conducting base 3 is provided with a groove for the pressing part 41 to be embedded, and the pressing part 41 is fixedly attached to the outer wall of the conducting base 3 through a screw 7; the distance between the two pin connection parts 42 is smaller than the outer diameter of the rotating shaft 52, an arc-shaped section 43 is arranged on one side of the pin connection part 42 facing the rotating shaft 52, and the two pin connection parts 42 penetrate through the conductive base 3 and are attached to the outer wall of the rotating shaft 52 in an encircling manner through the respective arc-shaped sections 43.

The implementation principle of the embodiment is as follows: firstly, the rotating shaft 52 and the conductive base 3 are installed into a bending machine head, then the machine head cover 2 is screwed, then the conductive sheet 4 passes through the groove on the conductive base 3 to tightly hold the rotating shaft 52, and then the conductive sheet cover 6 and the screw 7 are sequentially installed to fix the conductive sheet 4. When maintenance is needed, the screw 7 can be unscrewed through the straight screwdriver, the conducting strip cover 6 is taken down, then the conducting strip 4 can be taken out for maintenance or replacement, and the maintenance is very convenient without a very professional tool.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (9)

1. The utility model provides a bender head convenient to maintain conducting strip which characterized in that: including aircraft nose shell, aircraft nose lid, conductive substrate, conducting strip, core assembly, conductive substrate fixed mounting is in the aircraft nose shell, core assembly rotates to be connected in the aircraft nose shell, conducting strip detachably connects on the aircraft nose shell, the conducting strip is by outer extremely interior aircraft nose shell, conductive substrate of passing in proper order and contradict each other with core assembly, form the circuit that switches on that is linked together with cutting tool between aircraft nose shell, core assembly, conducting strip and the conductive substrate.

2. The bender head for facilitating maintenance of conductive strips according to claim 1, wherein: the core assembly comprises a core turbine and a rotating shaft driven to rotate by the core turbine, the rotating shaft is supported in the handpiece shell through a bearing piece, the bearing piece comprises a front end bearing and a rear end bearing, and a cutting tool is fixed at the bottom end of the rotating shaft.

3. The bender head for facilitating maintenance of conductive strips according to claim 2, wherein: the aircraft nose shell is provided with the mounting hole that supplies the conducting strip dismouting, inlay in the mounting hole and be equipped with the conducting strip lid, the conducting strip is covered and is worn to be equipped with the screw, the screw passes conducting strip lid and conducting strip in proper order and fixed with electrically conductive base, the conducting strip passes electrically conductive base and contacts with pivot or cutting tool's stalk portion.

4. The bender head for facilitating maintenance of conductive strips according to claim 3, wherein: the conducting strip is of a U-shaped elastic sheet structure and comprises a pressing portion and two pin connecting portions, the pressing portion is fixed on the outer wall of the conducting base in a fit mode through screws, the distance between the two pin connecting portions is smaller than the outer diameter of the rotating shaft, and the two pin connecting portions penetrate through the conducting base and are attached to the outer wall of the rotating shaft in an encircling mode.

5. The bender head for facilitating maintenance of conductive strips according to claim 4, wherein: one side of the pin connecting part facing the rotating shaft is provided with an arc-shaped section, and the two pin connecting parts are mutually attached to the rotating shaft through respective arc-shaped sections.

6. The bender head for facilitating maintenance of conductive strips according to claim 5, wherein: the outer wall of the conductive base is provided with a groove for embedding the pressing part, and the pressing part is embedded in the groove and is fixedly attached to the conductive base through a screw and a conductive sheet cover.

7. The bender head for facilitating maintenance of conductive strips according to any of claims 2-6, wherein: the electrically conductive base sets up to the semicircle ring-type, electrically conductive base outer wall is provided with vertical card strip, aircraft nose shell inner wall is provided with the spacing draw-in groove that supplies vertical card strip to peg graft, electrically conductive base is through vertical card strip and spacing draw-in groove fixed mounting in the aircraft nose shell.

8. The bender head for facilitating maintenance of conductive strips according to claim 7, wherein: the head shell is internally provided with a limiting boss for lapping the conductive base, and the front end bearing is arranged below the limiting boss and is not in contact with the conductive base.

9. The bender head for facilitating maintenance of conductive strips according to claim 7, wherein: the machine head cover is connected to the machine head shell in a threaded mode, and a wave-shaped gasket is arranged at the bottom of the front end bearing.

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