Torsion adjusting mechanism for balance arm of microscope for ophthalmologic operation

Abstract

The utility model discloses a torsion adjusting mechanism for a balance arm of an ophthalmologic operation microscope, and the mechanism comprises a parallel supporting arm which is used for the switching and supporting of the microscope; gas springs are installed on the inner sides of the parallel supporting arms and used for adjusting the balance state of the parallel supporting arms, and torsion adjusting devices are installed on the inner sides of one ends of the parallel supporting arms and used for adjusting the positions of the ends of the gas springs in the parallel supporting arms. The arrangement mode that the gas spring is matched with the torsion adjusting device is utilized, the torsion adjusting device is arranged on the adapter seat, so that adjustment between one end of the gas spring and the adapter seat can be conveniently achieved through the torsion adjusting device, and therefore the expansion amount of the gas spring can be conveniently adjusted; and the elastic supporting force of the gas spring can be conveniently adjusted, so that the balance effect of the parallel supporting arms can be adjusted by adjusting the gas spring, the use cost is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of balance arms, in particular to a torque regulating mechanism for a balance arm of an ophthalmic surgical microscope. Background Art

[0002] Ophthalmic surgical microscopes provide a highly precise, safe and effective operating environment for ophthalmic surgery through features such as magnification, lighting, stereoscopic vision, auxiliary functions and ergonomic design. When installing an ophthalmic surgical microscope, it is generally installed on a balance arm, and the microscope is installed and adjusted through the balance arm.

[0003] In clinical surgery, due to the variable surgical positions, the height of the surgical microscope needs to be changed to match the surgical position, so the weight configuration of the balance arm changes. The force exerted on the balance arm changes under different weight configurations. Especially when the height of the surgical microscope equipment is changed, its counterweight changes and is affected by inertia, causing the position of the surgical microscope equipment to be unstable, which is not conducive to the progress of the operation. Utility Model Content

[0004] The purpose of the utility model is to provide a torque adjustment mechanism for a balance arm of an ophthalmic surgical microscope to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a torque adjustment mechanism for a balance arm of an ophthalmic surgical microscope, comprising:

[0006] A parallel support arm, wherein the parallel support arm is used for supporting the microscope;

[0007] A gas spring is installed on the inner side of the parallel support arm, and the gas spring is used to adjust the balance state of the parallel support arm. A torque adjustment device is installed on the inner side of one end of the parallel support arm, and the torque adjustment device is used to adjust the position of the end of the gas spring inside the parallel support arm.

[0008] Preferably, the parallel support arms include:

[0009] An adapter, wherein the adapter is arranged horizontally as a whole;

[0010] An adapter seat, wherein the adapter seat is arranged vertically;

[0011] A first connecting plate, wherein the first connecting plate is arranged in parallel, and two ends of the first connecting plate are rotatably connected to the adapter and one side of the adapter seat respectively;

[0012] The second connecting plate is arranged in parallel, and two ends of the second connecting plate are rotatably connected to the adapter and the other side of the adapter seat respectively.

[0013] Preferably, the first connecting plates and the second connecting plates on both sides are arranged in parallel.

[0014] Preferably, a plurality of connecting pins are installed through-and-through on the adapter and the adapter seat, and the plurality of connecting pins are rotatably and through-and-through connected to the ends of the first connecting plate and the second connecting plate, respectively.

[0015] Preferably, the torque adjustment device comprises:

[0016] An adjustment seat, the adjustment seat being slidably disposed on the inner side of the adapter seat;

[0017] A screw mounting seat, wherein the screw mounting seat is fixedly mounted on the top of the adapter seat;

[0018] The top of the adjusting screw is rotatably connected with the screw mounting seat, the bottom of the adjusting screw is rotatably connected with the adapter seat, and the adjusting screw is threadably connected with the adjusting seat.

[0019] Preferably, a mounting pin is installed on one side of the adjustment seat, an ear plate is rotatably inserted into the middle of the mounting pin, and one end of the ear plate is connected to one end of the gas spring.

[0020] Preferably, the other end of the gas spring is connected to a mounting rod, and both ends of the mounting rod are rotatably connected to the ends of the first connecting plate and the second connecting plate respectively.

[0021] Technical effects and advantages of the utility model:

[0022] The utility model utilizes a setting mode in which a gas spring and a torque adjustment device are matched. By arranging the torque adjustment device on the adapter seat, the relative position between one end of the gas spring and the adapter seat can be adjusted through the torque adjustment device, thereby facilitating the adjustment of the expansion and contraction amount of the gas spring, and also facilitating the adjustment of the elastic supporting force of the gas spring. Thus, the balancing effect of the parallel supporting arms can be adjusted by adjusting the gas spring, thereby improving the use efficiency without having to replace or adjust the gas spring itself, reducing the use cost and increasing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the explosion structure of the utility model.

[0024] Figure 2 It is a schematic diagram of the overall top view structure of the utility model.

[0025] Figure 3 It is a schematic diagram of the internal structure of the front side of the utility model.

[0026] In the figure: 1. adapter; 2. adapter seat; 3. gas spring; 4. adjustment seat; 5. screw mounting seat; 6. adjustment screw; 7. mounting pin; 8. mounting rod; 9. first connecting plate; 10. second connecting plate; 11. connecting pin. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The utility model provides Figure 1-3 The torque adjustment mechanism of the balance arm of the ophthalmic surgical microscope shown in the figure comprises: a parallel support arm, the parallel support arm is used for the transfer support of the microscope; a gas spring 3 is installed on the inner side of the parallel support arm, the gas spring 3 is used to adjust the balance state of the parallel support arm, and a torque adjustment device is installed on the inner side of one end of the parallel support arm, the torque adjustment device is used to adjust the position of the end of the gas spring 3 inside the parallel support arm, and the torque adjustment device is provided on the adapter seat 2 so that the relative position between one end of the gas spring 3 and the adapter seat 2 can be adjusted by the torque adjustment device, thereby facilitating the adjustment of the expansion and contraction amount of the gas spring 3, and also facilitating the adjustment of the elastic supporting force of the gas spring 3, so that the balancing effect of the parallel support arm can be adjusted by adjusting the gas spring 3 without replacing or adjusting the gas spring 3 itself, and the gas spring 3 can provide an oblique upward supporting force to balance the weight of other components on the parallel support arm.

[0029] Furthermore, the parallel support arm includes: an adapter 1, which is horizontally arranged as a whole; an adapter seat 2, which is vertically arranged; a first connecting plate 9, which is parallelly arranged, and the two ends of the first connecting plate 9 are respectively rotatably connected to one side of the adapter 1 and the adapter seat 2; a second connecting plate 10, which is parallelly arranged, and the two ends of the second connecting plate 10 are respectively rotatably connected to the other side of the adapter 1 and the adapter seat 2, and the adapter seat 2 is used to facilitate the installation of the torque adjustment device, and the number of the first connecting plate 9 and the second connecting plate 10 is two. The first connecting plates 9 and the second connecting plates 10 on both sides are parallelly arranged, and the relatively parallel arrangement between the first connecting plates 9 and the second connecting plates 10 facilitates the connection of the relative position between the adapter 1 and the adapter seat 2, and also ensures that when adjusting them, the adapter seat 2 and the adapter 1 always remain in a parallel state to prevent the adapter 1 from rotating at will. A plurality of connecting pins 11 are installed on both the adapter 1 and the adapter seat 2, and the plurality of connecting pins 11 are respectively connected to the ends of the first connecting plate 9 and the second connecting plate 10 for rotation and insertion. The two connecting pins 11 on the adapter 1 are at the same distance from the two connecting pins 11 on the adapter seat 2, and the rotational connection between the adapter 1, the adapter seat 2, the first connecting plate 9 and the second connecting plate 10 is achieved by limiting the connecting pins 11.

[0030] Specifically, the torque adjustment device includes: an adjustment seat 4, which is slidably arranged on the inner side of the adapter seat 2; a screw mounting seat 5, which is fixedly mounted on the top of the adapter seat 2; an adjusting screw 6, the top of the adjusting screw 6 is rotatably connected with the screw mounting seat 5, the bottom of the adjusting screw 6 is rotatably connected with the adapter seat 2, and the adjusting screw 6 is threadedly connected with the adjustment seat 4, the screw mounting seat 5 is installed on the adapter seat 2 by bolts, and the screw mounting seat 5 is used to limit the rotation of the adjusting screw 6. The rotation of the adjusting screw 6 is made more stable. The upper and lower movable range of the adjusting seat 4 is conveniently limited by the screw mounting seat 5 and the bottom of the adapter seat 2 to prevent the adjusting seat 4 from moving excessively. A slide groove is provided on the inner side of the adapter seat 2. The adjusting seat 4 moves vertically up and down relative to the adapter seat 2 under the limit of the slide groove so as to adjust the end position of the gas spring 3. The threaded interpenetration connection between the adjusting screw 6 and the adjusting seat 4 can be achieved by rotating the adjusting screw 6 to adjust the height position of the adjusting seat 4.

[0031] Furthermore, a mounting pin 7 is installed on one side of the adjustment seat 4, and a lug plate is rotatably inserted in the middle of the mounting pin 7, and one end of the lug plate is connected to one end of the gas spring 3. A mounting rod 8 is connected to the other end of the gas spring 3, and both ends of the mounting rod 8 are rotatably connected to the ends of the first connecting plate 9 and the second connecting plate 10, respectively. By rotating and inserting between the mounting pin 7 and the lug plate, the hinge between the end of the gas spring 3 and the adjustment seat 4 can be realized, and the two ends of the mounting rod 8 are rotatably connected to the first connecting plate 9 and the second connecting plate 10 located above.

[0032] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Torque adjustment mechanism for the balance arm of an ophthalmic surgical microscope, comprising: A parallel support arm, wherein the parallel support arm is used for supporting the microscope; The invention is characterized in that: a gas spring (3) is installed on the inner side of the parallel support arm, and the gas spring (3) can adjust the balance state of the parallel support arm; a torque adjustment device is installed on the inner side of one end of the parallel support arm, and the torque adjustment device is used to adjust the position of the end of the gas spring (3) inside the parallel support arm, and the torque adjustment device comprises: An adjustment seat (4), wherein the adjustment seat (4) is slidably arranged on the inner side of the adapter seat (2); A screw rod mounting seat (5), wherein the screw rod mounting seat (5) is fixedly mounted on the top of the adapter seat (2); The adjusting screw (6) has a top that is rotatably connected to a screw mounting seat (5), a bottom that is rotatably connected to a transfer seat (2), and a threaded connection between the adjusting screw (6) and the adjusting seat (4).

2. The ophthalmic surgical microscope balance arm torque adjustment mechanism according to claim 1, characterized in that: The parallel support arm comprises: An adapter (1), wherein the adapter (1) is arranged horizontally as a whole; An adapter seat (2), wherein the adapter seat (2) is arranged vertically; A first connecting plate (9), wherein the first connecting plate (9) is arranged in parallel, and two ends of the first connecting plate (9) are rotatably connected to one side of the adapter (1) and the adapter seat (2) respectively; The second connecting plate (10) is arranged in parallel, and the two ends of the second connecting plate (10) are rotatably connected to the other side of the adapter (1) and the adapter seat (2) respectively.

3. The torque adjustment mechanism for the balance arm of an ophthalmic surgical microscope according to claim 2, characterized in that: The first connecting plate (9) and the second connecting plate (10) on both sides are arranged in parallel.

4. The ophthalmic surgical microscope balance arm torque adjustment mechanism according to claim 2, characterized in that: A plurality of connecting pins (11) are inserted and installed on both the adapter (1) and the adapter seat (2), and the plurality of connecting pins (11) are respectively rotatably inserted and connected with the ends of the first connecting plate (9) and the second connecting plate (10).

5. The ophthalmic surgical microscope balance arm torque adjustment mechanism according to claim 1, characterized in that: A mounting pin (7) is installed on one side of the adjustment seat (4), and an ear plate is rotatably inserted in the middle of the mounting pin (7), and one end of the ear plate is connected to one end of the gas spring (3).

6. The ophthalmic surgical microscope balance arm torque adjustment mechanism according to claim 2, characterized in that: The other end of the gas spring (3) is connected to a mounting rod (8), and both ends of the mounting rod (8) are rotatably connected to the ends of the first connecting plate (9) and the second connecting plate (10), respectively.

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