CN212276086U

CN212276086U - Spring arm rotation limiting mechanism of dental microscope

Info

Publication number: CN212276086U
Application number: CN202020482277.3U
Authority: CN
Inventors: 赵和平; 李靖
Original assignee: Zhenjiang Zhongtian Optical Instrument Co ltd
Current assignee: Zhenjiang Zhongtian Optical Instrument Co ltd
Priority date: 2020-04-06
Filing date: 2020-04-06
Publication date: 2021-01-01
Anticipated expiration: 2030-04-06

Abstract

The utility model relates to a dentistry technical field just discloses rotatory stop gear of dental microscope spring arm, including removing the base, the top fixed mounting who removes the base has the stand, the top movable mounting of stand has the support arm, the top movable mounting of support arm has the spring arm, the bottom movable mounting of spring arm has the microscope, the interior diapire fixed mounting of support arm has the fixing base. This rotatory stop gear of dental microscope spring arm, when the gag lever post moves to the contact pivot surface, be convenient for first spacing spring and the spacing spring thrust of second continuously act on regulating block and spacing ring, and then the thrust that makes regulating block and spacing ring continuously acts on the gag lever post, thereby make the gag lever post reach the spacing effect of secondary to the pivot, this effectual improvement of mechanism is spacing firm advantage, the problem of traditional wearing and tearing and the influence spring arm that cause the pivot because set screw is spacing has been avoided and rock.

Description

Spring arm rotation limiting mechanism of dental microscope

Technical Field

The utility model relates to a dentistry technical field specifically is rotatory stop gear of dental microscope spring arm.

Background

Dentistry, one of the medical discipline categories, is generally incorporated into the stomatology department in major hospitals, and mainly treats tooth and periodontal related diseases.

The existing dentistry has been widely used, has the advantage of improving oral diseases, along with the development of society, the existing dentistry has been an indispensable technology in life, aiming at the microscope used by the existing dentistry, the spring arms can be rotated, the rotation premise needs to be fixed at any time to achieve the limiting effect, but the existing limiting mechanism realizes the limiting of the rotating shaft through the fixing screws, the limiting mechanism needs to be frequently used, the rotating shaft is damaged by the fixing screws due to the long-term durable wear generated by rotating the fixing screws, once the surface of the rotating shaft is worn, the fixing screws have to be fastened to the limiting of the rotating shaft every time, the rotating shaft collided by the fixing screws can be inclined, the position where the rotating shaft inclined for a long time penetrates through the supporting arms can be worn due to the inclination of the rotating shaft, once the abrasion opening is larger and larger, the spring arm at the top of the rotating shaft can shake, and the requirement of the society is difficult to meet, so that a spring arm rotation limiting mechanism of the dental microscope is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides a dental microscope spring arm rotation limiting mechanism, which has the advantages of reducing the abrasion of a rotating shaft, reducing the shaking of the spring arm and improving the limiting stability, solves the problems that the prior dental microscope can realize the rotation of the spring arm, the requirement of the rotation can be fixed at any time to achieve the limiting effect, but the prior limiting mechanism realizes the limiting of the rotating shaft through a fixed screw, the limiting mechanism needs to be frequently used, the durable abrasion generated by rotating the fixed screw for a long time causes the damage of the rotating shaft by the fixed screw, once the surface of the rotating shaft is worn out, the fixed screw needs to be fastened to the limiting of the rotating shaft every time, the rotating shaft collided by the fixed screw can incline, the position where the rotating shaft inclined for a long time passes through a supporting arm can cause the abrasion due to the inclination of the rotating shaft, the problem of shaking of the spring arm at the top of the rotating shaft is caused once the abrasion opening is larger and larger.

(II) technical scheme

In order to realize the above-mentioned purpose that reduces pivot wearing and tearing, reduce the spring arm and rock and improve spacing firm, the utility model provides a following technical scheme: the spring arm rotation limiting mechanism of the dental microscope comprises a movable base, wherein a stand column is fixedly installed at the top of the movable base, a support arm is movably installed at the top of the stand column, a spring arm is movably installed at the top of the support arm, a microscope is movably installed at the bottom of the spring arm, a fixed seat is fixedly installed on the inner bottom wall of the support arm, a rotating shaft which penetrates through the top of the support arm and extends into the fixed seat is fixedly installed at the bottom of the spring arm, a rotating drum which extends to the left side of the support arm is movably installed in the support arm, a positioning ring which is positioned in the support arm is fixedly installed on the outer portion of the rotating shaft, a first gear is fixedly installed on the outer portion of the rotating drum, a second gear which is meshed with the first gear is fixedly installed on the outer portion of the rotating drum, an adjusting drum, the utility model discloses a spacing device, including a regulating cylinder, a limiting rod, a regulating block, a regulating cylinder, a spacing spring, a first baffle, a spacing ring, a second baffle, a spacing spring, a first baffle, a second baffle, a third baffle, a fourth baffle, a fifth baffle, a sixth baffle, a.

Preferably, the bottom left and right sides of removing the base all is provided with quantity and is two removal wheels, the outside of stand is provided with the hand lever, the bearing arm is connected for rotating with the relation of connection of stand.

Preferably, the spring arm and the support arm are rotatably connected, the microscope and the spring arm are rotatably connected, and the rotating shaft is inserted into the fixed seat and rotatably connected with the fixed seat.

Preferably, an annular groove corresponding to the positioning ring is formed in the supporting arm, the first gear is sleeved outside the rotating shaft, and the second gear is sleeved outside the rotating drum.

Preferably, the adjusting cylinder and the rotating cylinder are of an integrated structure, the right side of the limiting rod is attached to the outer portion of the rotating shaft, and anti-skid rubber is sleeved on the outer portion of the manual rotating handle.

Preferably, the adjusting handle is connected with the limiting rod into a whole through an adjusting block, and the adjusting handle corresponds to the adjusting cavity.

Preferably, the first limiting spring and the second limiting spring are both sleeved outside the limiting rod, and the first baffle and the second baffle are both provided with through holes corresponding to the limiting rod.

(III) advantageous effects

Compared with the prior art, the utility model provides a rotatory stop gear of dental microscope spring arm possesses following beneficial effect:

1. the dental microscope spring arm rotation limiting mechanism is characterized in that a manual rotating handle is pulled towards one end far away from a supporting arm by an operator, the manual rotating handle subjected to force conveniently drives a limiting rod to move towards the left side of an adjusting cylinder, so that the limiting rod drives an adjusting block and an adjusting handle to move, the adjusting handle is inserted into an adjusting cavity, the adjusting cylinder is limited after the adjusting handle is inserted into the adjusting cavity, at the moment, the operator conveniently rotates the manual rotating handle, the limiting rod is further driven to rotate, the limited adjusting cylinder is driven to rotate along with the limiting rod, the adjusting cylinder is driven to rotate, when the rotating cylinder rotates, a second gear is conveniently driven to rotate, the second gear is meshed with a first gear, the second gear conveniently drives a rotating shaft to rotate by virtue of the first gear, the rotation of the spring arm is further realized after the rotating shaft rotates, and the structure effectively realizes the effect of quick rotation, the trouble that the spring arm needs to be pushed again after the traditional needs elasticity set screw is avoided, and the meshing of second gear and first gear is passed through to this structure, has reached the effect of auto-lock, the effectual spacing advantage that has improved, and has avoided the tradition to need set screw just can realize spacing problem.

2. The dental microscope spring arm rotation limiting mechanism comprises a limiting rod, a regulating block, a first limiting spring, a second limiting spring, a limiting ring, a first limiting spring, a second limiting spring, a limiting rod and a limiting rod, wherein the limiting rod is arranged on a regulating cylinder, when an operator pulls a manual rotating handle, the regulating block on the limiting rod can conveniently extrude the first limiting spring, the limiting ring can simultaneously extrude the second limiting spring, the first limiting spring and the second limiting spring are compressed and stressed, when the operator rotates the manual rotating handle to reach a required angle, the manual rotating handle can be conveniently loosened, the compressed first limiting spring and the compressed second limiting spring can reversely push the regulating block and the limiting ring, so that the regulating block and the limiting ring can simultaneously drive the limiting rod to move, when the limiting rod moves to contact the surface of a rotating shaft, the reverse thrust of the first limiting spring and the second limiting spring can continuously act on the regulating block and the limiting ring, and the reverse thrust of the regulating block and, this effectual spacing firm advantage of having improved of mechanism has avoided traditional because the problem that the spacing wearing and tearing that causes the pivot of set screw and influence the spring arm and rock.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a partial view of the spring arms and support arms of the present invention;

FIG. 3 is an enlarged view of FIG. 2A.

In the figure: the microscope comprises a movable base 1, a vertical column 2, a supporting arm 3, a spring arm 4, a microscope 5, a fixing seat 6, a rotating shaft 7, a rotating cylinder 8, a positioning ring 9, a first gear 10, a second gear 11, an adjusting cylinder 12, a limiting rod 13, a manual rotating handle 14, an adjusting block 15, an adjusting handle 16, an adjusting cavity 17, a first limiting spring 18, a first baffle 19, a limiting ring 20, a second limiting spring 21 and a second baffle 22.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a dental microscope spring arm rotation limiting mechanism includes a movable base 1, two movable wheels are disposed on both sides of the bottom of the movable base 1, an upright post 2 is fixedly mounted on the top of the movable base 1, a hand lever is disposed outside the upright post 2, a support arm 3 is movably mounted on the top of the upright post 2, the support arm 3 is rotatably connected to the upright post 2, a spring arm 4 is movably mounted on the top of the support arm 3, the spring arm 4 is rotatably connected to the support arm 3, a microscope 5 is movably mounted on the bottom of the spring arm 4, the microscope 5 is rotatably connected to the spring arm 4, a fixing seat 6 is fixedly mounted on the inner bottom wall of the support arm 3, a rotating shaft 7 is fixedly mounted on the bottom of the spring arm 4 and extends to the inside of the fixing seat 6, the rotating shaft 7 is inserted into the fixing seat 6 and rotatably connected thereto, the inside movable mounting of support arm 3 has a rotary drum 8 that extends to the left side of support arm 3, the outside fixed mounting of rotary drum 8 has a holding ring 9 that is located the inside of support arm 3, the inside of support arm 3 is equipped with the ring channel corresponding to holding ring 9, the outside fixed mounting of pivot 7 has a first gear 10, first gear 10 cup joints the outside of pivot 7, the outside fixed mounting of rotary drum 8 has a second gear 11 that meshes with first gear 10, second gear 11 cup joints the outside of rotary drum 8, the left side fixed mounting of rotary drum 8 has a regulation section of thick bamboo 12, regulation section of thick bamboo 12 and rotary drum 8 are integrated structure, the inside movable mounting of regulation section of thick bamboo 12 has a gag lever post 13 that extends to the inside of support arm 3 through rotary drum 8, the right side laminating of gag lever post 13 is in the outside of pivot 7, the left side fixed mounting of gag lever post 13 has a, the outside of manual turning handle 14 has cup jointed anti-skidding rubber, the top and the equal fixed mounting in bottom of gag lever post 13 have regulating block 15, the left side fixed mounting of regulating block 15 has regulation handle 16, regulating handle 16 is connected as an organic wholely with gag lever post 13 through regulating block 15, regulation chamber 17 has been seted up to the inside of regulating barrel 12, regulation handle 16 is corresponding with regulation chamber 17, the outside movable mounting of gag lever post 13 has first limiting spring 18, the inside fixed mounting of regulating barrel 12 has the first baffle 19 that is located first limiting spring 18 left, the outside fixed mounting of gag lever post 13 has spacing ring 20, the outside movable mounting of gag lever post 13 has second limiting spring 21, first limiting spring 18 all cup joints the outside at gag lever post 13 with second limiting spring 21, the inside fixed mounting of rotary drum 8 has the second baffle 22 that is located second limiting spring 21 left, the perforation corresponding with gag lever post 13 has all been seted up to the inside of first baffle 19 and second baffle 22.

In summary, according to the dental microscope spring arm rotation limiting mechanism, the worker pulls the manual rotating handle 14 to the end away from the supporting arm 3, so that the stressed manual rotating handle 14 drives the limiting rod 13 to move to the left side of the adjusting cylinder 12, the limiting rod 13 drives the adjusting block 15 and the adjusting handle 16 to move, the adjusting handle 16 is inserted into the adjusting cavity 17, the adjusting cylinder 12 is limited after the adjusting handle 16 is inserted into the adjusting cavity 17, at this time, the worker can rotate the manual rotating handle 14, further drive the limiting rod 13 to rotate and drive the limited adjusting cylinder 12 to rotate simultaneously along with the limiting rod 13, so that the adjusting cylinder 12 drives the rotating cylinder 8 to rotate, when the rotating cylinder 8 rotates, the second gear 11 is conveniently driven to rotate, the second gear 11 is meshed with the first gear 10, and the second gear 11 can drive the rotating shaft 7 to rotate with the help of the first gear 10, and then realized 7 rotations of back drive spring arm 4 of counter shaft, this structure is effectual has realized the effect of quick rotation, avoids traditional trouble that still need promote spring arm 4 again behind the elasticity set screw that needs, and this structure passes through the meshing of second gear 11 and first gear 10, has reached the effect of auto-lock, the effectual spacing advantage that has improved, and has avoided the tradition to need the set screw just can realize spacing problem.

Moreover, through the limiting rod 13 arranged on the adjusting cylinder 12, when a worker pulls the manual rotating handle 14, the adjusting block 15 on the limiting rod 13 can conveniently extrude the first limiting spring 18, and the limiting ring 20 can simultaneously extrude the second limiting spring 21, so that the first limiting spring 18 and the second limiting spring 21 are compressed and stressed, when the worker rotates the manual rotating handle 14 to reach a required angle, the manual rotating handle 14 can be conveniently loosened, so that the compressed first limiting spring 18 and the compressed second limiting spring 21 can reversely push the adjusting block 15 and the limiting ring 20, the adjusting block 15 and the limiting ring 20 can simultaneously drive the limiting rod 13 to move, when the limiting rod 13 moves to contact the surface of the rotating shaft 7, the reverse thrust of the first limiting spring 18 and the compressed second limiting spring 21 can continuously act on the adjusting block 15 and the limiting ring 20, and the reverse thrust of the adjusting block 15 and the limiting ring 20 can continuously act on the limiting rod 13, thereby make gag lever post 13 reach the spacing effect of secondary to pivot 7, this effectual spacing firm advantage of having improved of mechanism has avoided traditional problem that causes the wearing and tearing of pivot 7 and influence spring arm 4 and rock because of the spacing of set screw.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Rotatory stop gear of dental microscope spring arm, including removing base (1), its characterized in that: the top fixed mounting who removes base (1) has stand (2), the top movable mounting of stand (2) has support arm (3), the top movable mounting of support arm (3) has spring arm (4), the bottom movable mounting of spring arm (4) has microscope (5), the interior diapire fixed mounting of support arm (3) has fixing base (6), the bottom fixed mounting of spring arm (4) has pivot (7) that runs through the top of support arm (3) and extend to fixing base (6) inside, the inside movable mounting of support arm (3) has rotary drum (8) that extends to support arm (3) left, the outside fixed mounting of rotary drum (8) has holding ring (9) that is located support arm (3) inside, the outside fixed mounting of rotary drum (7) has first gear (10), the outside fixed mounting of rotary drum (8) has second gear (11) with first gear (10) engaged with, the left side fixed mounting of rotary drum (8) has a regulation section of thick bamboo (12), the inside movable mounting of regulation section of thick bamboo (12) has gag lever post (13) that runs through rotary drum (8) and extend to support arm (3) inside, the left side fixed mounting of gag lever post (13) has and is located left manual turning handle (14) of regulation section of thick bamboo (12), the top and the equal fixed mounting in bottom of gag lever post (13) have regulating block (15), the left side fixed mounting of regulating block (15) has regulation handle (16), regulation chamber (17) have been seted up to the inside of regulation section of thick bamboo (12), the outside movable mounting of gag lever post (13) has first limiting spring (18), the inside fixed mounting of regulation section of thick bamboo (12) has and is located left first baffle (19) of first limiting spring (18), the outside fixed mounting of gag lever post (13) has spacing ring (20), a second limiting spring (21) is movably mounted outside the limiting rod (13), and a second baffle (22) located on the left side of the second limiting spring (21) is fixedly mounted inside the rotary drum (8).

2. The dental microscope spring arm rotation limiting mechanism of claim 1, wherein: the utility model discloses a portable mobile base, including removal base (1), removal base, support arm (3), stand (2), the bottom left and right sides of removing base (1) all is provided with quantity and is two removal wheels, the outside of stand (2) is provided with the hand lever, the connected relation of support arm (3) and stand (2) is for rotating the connection.

3. The dental microscope spring arm rotation limiting mechanism of claim 1, wherein: the connection relation between the spring arm (4) and the supporting arm (3) is rotational connection, the connection relation between the microscope (5) and the spring arm (4) is rotational connection, and the rotating shaft (7) is inserted in the fixed seat (6) and is rotationally connected with the fixed seat.

4. The dental microscope spring arm rotation limiting mechanism of claim 1, wherein: an annular groove corresponding to the positioning ring (9) is formed in the supporting arm (3), the first gear (10) is sleeved outside the rotating shaft (7), and the second gear (11) is sleeved outside the rotating drum (8).

5. The dental microscope spring arm rotation limiting mechanism of claim 1, wherein: the adjusting cylinder (12) and the rotating cylinder (8) are of an integrated structure, the right side of the limiting rod (13) is attached to the outer portion of the rotating shaft (7), and anti-skid rubber is sleeved on the outer portion of the manual rotating handle (14).

6. The dental microscope spring arm rotation limiting mechanism of claim 1, wherein: the adjusting handle (16) is connected with the limiting rod (13) into a whole through an adjusting block (15), and the adjusting handle (16) corresponds to the adjusting cavity (17).

7. The dental microscope spring arm rotation limiting mechanism of claim 1, wherein: the first limiting spring (18) and the second limiting spring (21) are both sleeved outside the limiting rod (13), and the first baffle plate (19) and the second baffle plate (22) are both provided with through holes corresponding to the limiting rod (13).