Lifting arm locking mechanism of operating microscope

Abstract

The utility model relates to a lifting arm locking mechanism of an operating microscope, which comprises a lifting arm rear end connector, a connecting rod shaft pin, a deep groove ball bearing, a lifting arm front end connecting block and connecting rods, and the lifting arm rear end connector and the lifting arm front end connecting block are movably connected through the four connecting rods, the connecting rod shaft pin and the deep groove ball bearing. The lifting arm rear end connector, the lifting arm front end connecting block and the four connecting rods form a lifting arm four-connecting-rod mechanism, that is, the lifting arm front end connecting block can do up-and-down lifting motion around a connecting rod shaft pin arranged at the position of the lifting arm rear end connector through the four connecting rods, and the lifting arm is further provided with a locking mechanism for locking the lifting arm front end connecting block to move. The locking mechanism is installed on the connecting rod and located on the connecting block at the front end of the lifting arm. According to the technical scheme, the structure is reasonable, the upper connecting rod and the lower connecting rod are not prone to dislocation and deformation in actual operation, and the upper connecting rod and the lower connecting rod can be protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of microscope especially, relate to a kind of lifting arm locking mechanism of surgical microscope. BACKGROUND

[0002] In the medical field, when doctor is in the process of using surgical microscope to diagnose and treat teeth of patient, patient is in lying state, doctor will adjust the working height of surgical microscope according to the need of operation, to satisfy the observation of the tooth condition of patient at different magnification, to carry out operation.

[0003] Among them, the working height of surgical microscope needs to be adjusted to rely on the lifting function of lifting arm in microscope frame to be realized, further, the above-mentioned lifting arm is composed of four connecting rods and front and rear end connecting blocks, when adjusting different working height positions of surgical microscope, relative motion occurs between upper connecting rod and lower connecting rod, when moving from the horizontal position of connecting rod upward or downward, the relative distance between connecting rod is reduced, when adjusting to appropriate working height, upper connecting rod and lower connecting rod need to be locked, to make the distance between upper and lower connecting rod remain unchanged, relative position remains fixed, however, some surgical microscopes on the market are prone to dislocation and deformation of upper connecting rod and lower connecting rod when locking the relative position of upper connecting rod and lower connecting rod, which will obviously affect the operation, and needs to be improved by industry personnel to avoid the above-mentioned situation. SUMMARY

[0004] To solve the above technical problems, the utility model aims at providing a kind of lifting arm locking mechanism of surgical microscope, including lifting arm rear end connector, connecting rod shaft pin, deep groove ball bearing, lifting arm front end connecting block and connecting rod, lifting arm rear end connector and lifting arm front end connecting block are movably connected by four connecting rods, connecting rod shaft pin and deep groove ball bearing, lifting arm rear end connector, lifting arm front end connecting block and four connecting rods constitute lifting arm four connecting rod mechanism, i.e. lifting arm front end connecting block can be lifted and lowered by four connecting rods around the connecting rod shaft pin of lifting arm rear end connector, and locking mechanism for locking the movement of lifting arm front end connecting block is further provided, which is installed on the connecting rod and located at the lifting arm front end connecting block.

[0005] Preferably, the four connecting rods of the lifting arm four connecting rod mechanism are arranged in pairs and vertically, forming an upper connecting rod module and a lower connecting rod module, and the locking mechanism is installed between the upper connecting rod module and the lower connecting rod module.

[0006] Preferably, the limiting rotating ring fixing block is fixedly arranged at the upper end of the limiting rotating ring and located at the side of the upper connecting rod module, the limiting pin is rotatably arranged on the two connecting rods of the upper connecting rod module and passes through the limiting rotating connecting rod and the limiting rotating connecting rod copper ring, the lower end of the limiting rotating ring is provided with a limiting rotating hole at the side of the lower connecting rod module, the limiting rotating copper gasket and the limiting rotating copper nut are respectively located at the two sides of the limiting rotating hole, the limiting rotating copper gasket, the limiting rotating ring and the limiting rotating copper nut are tightly held by screwing the lifting arm limiting locking knob into the limiting rotating copper gasket, so that the locking and rotation of the four-connecting-rod mechanism of the lifting arm are realized.

[0007] Preferably, the center hole of the limiting rotating copper gasket is a via hole, the center hole of the limiting rotating copper nut is a threaded hole, the front end of the lifting arm limiting locking knob is provided with a stepped surface abutting against the limiting rotating copper gasket, and the lifting arm limiting locking knob is further provided with a screw rod at the stepped surface, the screw rod passes through the center hole of the limiting rotating copper gasket and the limiting rotating hole of the limiting rotating ring, and is threadedly matched with the center hole of the limiting rotating copper nut.

[0008] Preferably, the limiting rotating connecting rod copper ring is fixedly arranged in the assembly hole at the upper end of the limiting rotating connecting rod, the limiting pin passes through the limiting rotating connecting rod copper ring, and the limiting rotating connecting rod is fixed between the two connecting rods of the upper connecting rod module.

[0009] Preferably, the copper column on one side of the limiting rotating copper nut is fixedly arranged in the anti-rotation notch at the lower end of the limiting rotating connecting rod.

[0010] Preferably, the limiting rotating ring is rotatably arranged on the limiting pin through the limiting rotating ring fixing block.

[0011] Preferably, the lifting arm limiting locking knob is rotatably arranged on the two connecting rods of the lower connecting rod module, and the lower end of the limiting rotating ring is provided with an arc-shaped waist groove for the screw rod of the lifting arm limiting locking knob to pass through.

[0012] Preferably, annular limiting grooves are formed on the two sides of the limiting rotating connecting rod copper ring.

[0013] By the above scheme, the utility model has at least the following advantages:

[0014] The utility model discloses a kind of locking mechanisms of lifting arm of surgical microscope, more conveniently realize the locking of upper connecting rod and lower connecting rod in surgical microscope, so that upper connecting rod and lower connecting rod are not prone to misplacement and deformation in actual operation, it is beneficial to the protection of upper connecting rod and lower connecting rod, in addition, doctor can also be more accurately, flexibly positioned to the required working height, increase the operation convenience of user, and then improve work efficiency.

[0015] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, and can be implemented according to the content of the specification, as follows with the preferred embodiment of the utility model and cooperate with the drawings detailed description as follows. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show a certain embodiment of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Fig. 1 This is a three-dimensional structural schematic diagram of the lifting arm locking mechanism of a surgical microscope according to this application;

[0018] Fig. 2 This is a partial cross-sectional schematic diagram of the locking structure of the lifting arm of a surgical microscope according to this application. Detailed Implementation

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0020] See Figs. 1-2 The preferred embodiment of this utility model describes a lifting arm locking mechanism for a surgical microscope, comprising a rear end connector 1, a connecting rod pin 2, a deep groove ball bearing 3, a front end connector 4, and connecting rods 5. The rear end connector 1 and the front end connector 4 are movably connected by four connecting rods 5, the connecting rod pin 2, and the deep groove ball bearing 3. The rear end connector 1, the front end connector 4, and the four connecting rods 5 constitute a four-bar linkage mechanism for the lifting arm, meaning that the front end connector 4 can move up and down around the connecting rod pin 2 at the rear end connector 1 via the four connecting rods 5. The mechanism also includes a locking mechanism 6 to lock the movement of the front end connector 4, which is mounted on the connecting rods 5 and located at the front end connector 4.

[0021] Preferably, the lifting arm four-bar linkage mechanism has four connecting rods 5 arranged in pairs opposite each other and vertically, forming an upper connecting rod module and a lower connecting rod module. The locking mechanism 6 is installed between the upper connecting rod module and the lower connecting rod module. The locking mechanism 6 includes a lifting arm limit locking knob 601, a rotation limit copper washer 602, a limit pin 603, a limit rotating ring fixing block 604, a limit rotating ring 605, a rotation limit connecting rod 606, a rotation limit connecting rod copper ring 607, and a rotation limit copper nut 608.

[0022] Preferably, the limiting rotating ring fixing block 604 is fixedly arranged at the upper end of the limiting rotating ring 605 and located at the side of the upper connecting rod module, the limiting pin 603 is rotatably arranged on the two connecting rods 5 of the upper connecting rod module and passes through the limiting rotating connecting rod 606 and the limiting rotating copper ring 607, the lower end of the limiting rotating ring 605 is provided with a limiting rotating hole at the side of the lower connecting rod module, the limiting rotating copper washer 602 and the limiting rotating copper nut 608 are respectively located at the two sides of the limiting rotating hole, the limiting rotating copper washer 602, the limiting rotating ring 605 and the limiting rotating copper nut 608 are tightly held by screwing the lifting arm limiting locking knob 601 into the limiting rotating copper washer 602, so as to realize the locking and rotating of the lifting arm four-connecting-rod mechanism.

[0023] Preferably, the center hole of the limiting rotating copper washer 602 is a through hole, the center hole of the limiting rotating copper nut 608 is a threaded hole, the front end of the lifting arm limiting locking knob 601 is provided with a stepped surface abutting against the limiting rotating copper washer 602, and the lifting arm limiting locking knob 601 is further provided with a screw rod at the stepped surface, the screw rod passes through the center hole of the limiting rotating copper washer 602 and the limiting rotating hole of the limiting rotating ring 605, and is threadedly matched with the center hole of the limiting rotating copper nut 608.

[0024] Preferably, the limiting rotating copper ring 607 is fixedly arranged in the assembly hole at the upper end of the limiting rotating connecting rod 606, the limiting pin 603 passes through the limiting rotating copper ring 607, and the limiting rotating connecting rod 606 is fixed between the two connecting rods 5 of the upper connecting rod module.

[0025] Preferably, the copper column on one side of the limiting rotating copper nut 608 is fixedly arranged in the anti-rotation notch at the lower end of the limiting rotating connecting rod 606.

[0026] Preferably, the limiting rotating ring 605 is rotatably arranged on the limiting pin 603 through the limiting rotating ring fixing block 604.

[0027] Preferably, the lifting arm limiting locking knob 601 is rotatably arranged on the two connecting rods 5 of the lower connecting rod module, and the lower end of the limiting rotating ring 605 is provided with an arc-shaped waist groove through which the screw rod of the lifting arm limiting locking knob 601 passes.

[0028] Preferably, the limiting pin 603 is provided with a ring-shaped limiting groove on the two sides of the limiting rotating copper ring 607. A stop ring structure can be embedded in the ring-shaped limiting groove, so that the position of the limiting rotating connecting rod 606 and the limiting rotating copper ring 607 can be limited.

[0029] The above only describes preferred embodiments of the present application and is not used to limit the present application. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made without departing from the technical principles of the present application, and these improvements and modifications should also be regarded as the protection scope of the present application.

Claims

1. A lifting arm locking mechanism of a surgical microscope, characterized by: The lifting arm four-link mechanism comprises a rear end connecting head (1), a connecting rod shaft pin (2), a deep groove ball bearing (3), a front end connecting block (4) of the lifting arm and four connecting rods (5). The rear end connecting head (1) and the front end connecting block (4) of the lifting arm are movably connected through the four connecting rods (5), the connecting rod shaft pin (2) and the deep groove ball bearing (3). The rear end connecting head (1), the front end connecting block (4) of the lifting arm and the four connecting rods (5) form the lifting arm four-link mechanism. The front end connecting block (4) of the lifting arm can be lifted up and down around the connecting rod shaft pin (2) of the rear end connecting head (1) through the four connecting rods (5). The lifting arm four-link mechanism is provided with a locking mechanism (6) for locking the movement of the front end connecting block (4) of the lifting arm. The locking mechanism (6) is arranged on the connecting rods (5) and located at the front end connecting block (4) of the lifting arm.

2. The locking mechanism of the lifting arm of a surgical microscope according to claim 1, characterized in that: The four connecting rods (5) of the lifting arm four-link mechanism are arranged in pairs and in an upper and lower manner, forming an upper connecting rod module and a lower connecting rod module. The locking mechanism (6) is arranged between the upper connecting rod module and the lower connecting rod module. The locking mechanism (6) comprises a lifting arm position-limiting locking knob (601), a rotation-limiting copper gasket (602), a position-limiting bolt (603), a position-limiting rotating ring fixing block (604), a position-limiting rotating ring (605), a rotation-limiting connecting rod (606), a rotation-limiting connecting rod copper ring (607) and a rotation-limiting copper nut (608).

3. The locking mechanism of the lifting arm of a surgical microscope according to claim 2, characterized in that: The position-limiting rotating ring fixing block (604) is fixedly arranged at the upper end of the position-limiting rotating ring (605) and located at the side of the upper connecting rod module. The position-limiting bolt (603) is rotatably arranged on the two connecting rods (5) of the upper connecting rod module and passes through the rotation-limiting connecting rod (606) and the rotation-limiting connecting rod copper ring (607). The lower end of the position-limiting rotating ring (605) is provided with a rotation-limiting hole at the side of the lower connecting rod module. The rotation-limiting copper gasket (602) and the rotation-limiting copper nut (608) are respectively located at the two sides of the rotation-limiting hole. The rotation-limiting copper gasket (602), the position-limiting rotating ring (605) and the rotation-limiting copper nut (608) are tightly held by screwing the lifting arm position-limiting locking knob (601) into the rotation-limiting copper gasket (602), thereby achieving the locking and rotation of the lifting arm four-link mechanism.

4. The lifting arm locking mechanism of a surgical microscope according to claim 3, characterized in that: The center hole of the rotation-limiting copper gasket (602) is a through hole, and the center hole of the rotation-limiting copper nut (608) is a threaded hole. The front end of the lifting arm position-limiting locking knob (601) is provided with a stepped surface abutting against the rotation-limiting copper gasket (602). The lifting arm position-limiting locking knob (601) is further provided with a screw rod at the stepped surface. The screw rod passes through the center hole of the rotation-limiting copper gasket (602) and the rotation-limiting hole of the position-limiting rotating ring (605), and is threadedly connected with the center hole of the rotation-limiting copper nut (608).

5. The elevating arm locking mechanism of a surgical microscope according to claim 3, characterized in that: The rotation-limiting connecting rod copper ring (607) is fixedly arranged in the assembly hole at the upper end of the rotation-limiting connecting rod (606). The position-limiting bolt (603) passes through the rotation-limiting connecting rod copper ring (607). The rotation-limiting connecting rod (606) is fixed between the two connecting rods (5) of the upper connecting rod module.

6. The elevating arm locking mechanism of a surgical microscope according to claim 3 or 4, characterized in that: The copper column on one side of the rotation-limiting copper nut (608) is fixedly arranged in the anti-rotation notch at the lower end of the rotation-limiting connecting rod (606).

7. The locking mechanism of the lifting arm of a surgical microscope according to claim 3 or 4, characterized in that: The position-limiting rotating ring (605) is rotatably arranged on the position-limiting bolt (603) through the position-limiting rotating ring fixing block (604).

8. The locking mechanism of the lifting arm of a surgical microscope according to claim 3 or 4, characterized in that: The lifting arm limiting locking knob (601) is rotatably arranged on the two connecting rods (5) of the lower connecting rod module, and the lower end of the limiting rotating ring (605) has an arc-shaped waist groove through which the screw rod of the lifting arm limiting locking knob (601) passes.

9. The locking mechanism of the lifting arm of a surgical microscope according to claim 5, characterized in that: The limiting bolt (603) is arranged on the two sides of the limiting rotating connecting rod copper ring (607) and has a ring-shaped limiting groove.

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