Protective mechanism and treatment bed

Abstract

The utility model provides a protection mechanism and a treatment couch, the protection mechanism comprises a first rotating shaft and a protection curtain, one end of the protection curtain is wound on the first rotating shaft, and the other end of the protection curtain is fixed on one of a moving part and a fixed part of an object instrument. The first rotating shaft is fixed on the other one of the moving part and the fixed part; wherein the protective curtain can be unfolded under the driving of a moving part which moves relative to the fixed part so as to shield the exposed part of the moving part due to movement. Based on the technical scheme, the protective curtain of the protective mechanism can be unfolded along with movement, when the protective mechanism is applied to a corresponding object instrument, once a moving part of the object instrument moves relative to a fixed part of the object instrument, the protective curtain is unfolded along with the object instrument, and therefore the part, exposed relative to the fixed part, of the moving part due to movement can be shielded; furthermore, the protective curtain can prevent external objects such as hands of people from contacting or extending into the part, exposed out of the fixed part, of the moving part.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, especially a kind of protection mechanism and treatment bed. BACKGROUND

[0002] The safety and reliability of medical instruments are very important in the current medical field, which requires medical instrument manufacturers to improve and upgrade the safety factor of their products. For example, for medical treatment beds, the bed panel usually has horizontal movement function, and to achieve the movement function, it usually needs movement platform, fixed platform, transmission mechanism and other components. For the transmission mechanism, its main components can be divided into two parts, one part is installed on the fixed platform, and the other part is installed on the movement platform. When the platforms move relative to each other, in order to avoid the part of the transmission mechanism installed on the fixed platform, a fixed rigid shell cannot be used for protection. Therefore, when the movement platform moves from one direction to another direction, the internal space of the bottom part without shell protection will be exposed, and when the hands of personnel or other objects are inserted into the exposed space, it may touch the internal components and cause safety risks or serious hand clamping risks.

[0003] Therefore, for medical treatment beds and other medical instruments with movable structures, a new protection structure needs to be designed to solve the problem that the movable components cannot be protected by a fixed shell. SUMMARY

[0004] To solve the problem that medical beds and other instruments cannot use conventional fixed shells to protect the movable components, the utility model provides a protection mechanism and a treatment bed.

[0005] In a first aspect, the utility model provides a protection mechanism, which includes a first rotating shaft and a protection curtain. One end of the protection curtain is wound around the first rotating shaft, and the other end of the protection curtain is fixed to one of the moving components and the fixed components of the subject instrument. The first rotating shaft is fixed to the other of the moving components and the fixed components.

[0006] The protection curtain can be unfolded under the driving of the moving components relative to the fixed components to shield the part of the moving components exposed due to movement.

[0007] In one embodiment, the first rotating shaft includes a fixed shaft and a rotating cylinder sleeved outside the fixed shaft, and one end of the protection curtain is wound around the rotating cylinder.

[0008] In one embodiment, a coil spring is further arranged between the fixed shaft and the rotating cylinder. One end of the coil spring is fixed to the fixed shaft, and the other end is fixed to the inner wall of the rotating cylinder.

[0009] In one embodiment, the fixed shaft is provided with first connectors at both ends, the first connectors being used to connect the moving parts of the object instrument or the fixed parts.

[0010] In one embodiment, the protective curtain is constructed as a metal roller blind structure, a woven fabric structure, or a one-piece molded plastic structure.

[0011] In one embodiment, the protective curtain is provided with a plurality of reinforcing ribs, which extend along the width direction of the protective curtain and are evenly distributed along the length direction of the protective curtain.

[0012] In one embodiment, the reinforcing rib is bonded to the protective curtain; or, the reinforcing rib is woven into the protective curtain; or, the reinforcing rib is integrally formed with the protective curtain.

[0013] In one embodiment, a second rotating shaft is also included, which is on the same moving component or the fixed component as the first rotating shaft. The second rotating shaft is parallel to the first rotating shaft, and the protective curtain is fixedly connected to the moving component or the fixed component of the object instrument after changing direction by passing around the second rotating shaft from the first rotating shaft.

[0014] In one embodiment, the first rotating shaft is disposed on the side of the moving component, and the second rotating shaft is disposed at the corner of the side and bottom surfaces of the moving component;

[0015] The protective curtain extends from the first pivot, passes through the side of the moving component, around the second pivot, and then changes direction to extend along the bottom surface of the moving component, and connects to the fixed component corresponding to the bottom surface of the moving component.

[0016] Secondly, the present invention provides a treatment bed, which includes the aforementioned protective mechanism. The first rotating shaft of the protective mechanism is fixed to the edge of the movable bed platform of the treatment bed, and the end of the protective curtain wrapped around the first rotating shaft is fixed to the edge of the base supporting the movable bed platform.

[0017] The above-mentioned technical features can be combined in various suitable ways or replaced by equivalent technical features, as long as the purpose of this utility model can be achieved.

[0018] The protective mechanism and treatment bed provided by this utility model have at least the following beneficial effects compared with the prior art:

[0019] This utility model discloses a protective mechanism and a treatment bed. The protective curtain of the protective mechanism can be unfolded. When applied to a corresponding instrument, once the moving part of the instrument moves relative to its fixed part, the protective curtain unfolds accordingly, thereby covering the part of the moving part exposed relative to the fixed part due to the movement. In this way, the protective curtain can prevent external objects such as a person's hand from contacting or reaching into the part of the moving part exposed to the fixed part. Attached Figure Description

[0020] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings. Wherein:

[0021] Figure 1 A schematic diagram of the protective mechanism of this utility model is shown;

[0022] Figure 2 A cross-sectional structural diagram of the first rotating shaft of the protective mechanism of this utility model is shown;

[0023] Figure 3 A schematic diagram showing the application of the protective mechanism of this utility model on a treatment bed is shown;

[0024] Figure 4 Showing Figure 3 A bottom view of the protective mechanism in the structure shown (with the protective curtain in the deployed state).

[0025] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not to scale.

[0026] Figure label:

[0027] 1-Moving component, 2-Fixed component, 3-Protective mechanism, 4-Drive mechanism, 5-Protective curtain, 6-Reinforcing rib, 7-First rotating shaft, 8-Second rotating shaft, 9-First connecting piece, 10-Second connecting piece, 11-End plate, 12-Coil spring, 13-Fixed shaft, 14-Rotating drum. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] An embodiment of this utility model provides a protective mechanism 3, which includes a first rotating shaft 7 and a protective curtain 5. One end of the protective curtain 5 is wound around the first rotating shaft 7, and the other end of the protective curtain 5 is fixed to one of the moving part 1 and the fixed part 2 of the object instrument. The first rotating shaft 7 is fixed to the other part of the moving part 1 and the fixed part 2.

[0030] The protective curtain 5 can be unfolded under the action of the moving part 1, which moves relative to the fixed part 2, so as to cover the part of the moving part 1 that is exposed due to the movement.

[0031] Specifically, as shown in the attached diagram. Figure 1 As shown, the protective mechanism 3 of this utility model mainly consists of a first rotating shaft 7 and a protective curtain 5. The protective curtain 5 is not a completely rigid structure in its overall design; it can be rolled up in at least one direction, that is, one end of the protective curtain 5 is rolled up around the first rotating shaft 7. Therefore, the protective curtain 5 can at least partially release its rolling structure when the other end is subjected to tension, that is, at least partially unfold.

[0032] In use, the first rotating shaft 7 is fixed to one of the moving part 1 and the fixed part 2 of the target instrument, and the other end of the protective curtain 5 is fixed to the remaining part of the moving part 1 and the fixed part 2. The specific fixed positions of the first rotating shaft 7 and the end of the protective curtain 5 are determined according to the relative movement of the moving part 1 and the fixed part 2 and the part that needs to be protected. After the protective mechanism 3 is installed, once the moving part 1 of the target instrument moves relative to its fixed part 2, it will cause the protective curtain 5 to unfold, thereby covering the part of the moving part 1 exposed relative to the fixed part 2 due to the movement (this part was originally covered by the fixed part 2). Thus, the protective curtain 5 can prevent external objects, such as a person's hand, from contacting or entering the part of the moving part 1 exposed to the fixed part 2.

[0033] In this embodiment, the protective mechanism 3 can be applied to a treatment bed, which is the object of the treatment. The top of the treatment bed is a movable platform, which serves as the moving part 1. Below the movable platform is a base, which serves as the fixed part 2 and supports the movable platform, as shown in the attached diagram. Figure 3 As shown in the attached diagram, the movement of the movable platform of the treatment bed relative to the base is mainly horizontal translation. Therefore, after the movable platform has translated a certain distance relative to the base, a portion of the bottom of the movable platform will be exposed above the base, as shown in the attached diagram. Figure 4 As shown, the exposed portion of the movable bed's bottom, extending beyond the base, is the area requiring protection to prevent accidental hand insertion and potential injury. Therefore, for this treatment bed, the protective curtain 5 must be able to cover the exposed portion of the movable bed's bottom when unfolded. Ideally, the protective curtain 5 should be parallel to the bottom of the movable bed or directly integrated into it. Based on this, the first pivot 7 can be fixed to the edge of the movable bed near the lower base, and the end of the protective curtain 5 can be fixed to the edge of the base near the upper movable bed; alternatively, the positions of the first pivot 7 and the end of the protective curtain 5 can be interchanged. When the movable bed moves relative to the base, it will cause the protective curtain 5 to unfold, thus covering the exposed portion of the movable bed's bottom, as shown in the attached diagram. Figure 4 As shown.

[0034] It should be noted that the specific dimensions of the protective curtain 5 can be determined based on the dimensions of the part of the moving part 1 of the object instrument that will be exposed outside its fixed part 2 after movement, including the width of the protective curtain 5 and the length that can be unfolded.

[0035] Optionally, the protective curtain 5 can be constructed as a metal roller shutter structure, a woven fabric structure, or a one-piece molded plastic structure. The metal roller shutter structure can be constructed like a roller shutter door, using multiple hinged narrow metal plates or sheets; the woven fabric structure can be made of metal or non-metal wires; and the one-piece molded plastic structure can specifically be a plastic film structure with a certain thickness.

[0036] In one embodiment, as shown in the attached figure Figure 1 As shown, the protective curtain 5 is provided with multiple reinforcing ribs 6, which extend along the width direction of the protective curtain 5 and are evenly distributed along the length direction of the protective curtain 5.

[0037] Specifically, the reinforcing rib 6 is used to improve the structural strength of the protective curtain 5, ensuring that the protective curtain 5 can prevent external objects from contacting or penetrating the parts of the moving parts exposed to the fixed parts. The length of the reinforcing rib 6 is preferably the same as the width of the protective curtain 5, and its two ends are aligned with the sides of the protective curtain 5. The width of the reinforcing rib 6 can be as narrow as possible while ensuring structural strength, so as to avoid affecting the rolling up of the protective curtain 5 as much as possible.

[0038] Furthermore, for the protective curtain 5 with a metal roller shutter structure, the reinforcing rib 6 is an optional structure, which can be bonded to the protective curtain 5 or integrally formed with the metal components constituting the protective curtain 5. For the protective curtain 5 with a woven fabric structure, the reinforcing rib 6 is a preferred structure, which can be bonded to the protective curtain 5 or woven directly into the protective curtain 5 during the weaving process. For the protective curtain 5 with a one-piece molded plastic structure, the reinforcing rib 6 is a preferred structure, which can be bonded to the protective curtain 5 or integrally formed with the protective curtain 5.

[0039] In addition, as shown in the attached figure Figure 1 As shown, the protective curtain 5 has an end plate 11 at its end. The end plate 11 is mainly used to facilitate the connection between the protective curtain 5 and the corresponding parts of the target instrument. At the same time, the end plate 11 also functions similarly to the reinforcing rib 6, strengthening the structural strength of the end position of the protective curtain 5.

[0040] In one embodiment, the first rotating shaft 7 includes a fixed shaft 13 and a rotating drum 14 sleeved outside the fixed shaft 13, with one end of the protective curtain 5 wound around the rotating drum 14.

[0041] Specifically, as shown in the attached diagram. Figure 2As shown, the first rotating shaft 7 mainly comprises two parts: a fixed shaft 13 and a rotating cylinder 14 sleeved around the fixed shaft 13. The fixed shaft 13 serves as the structural foundation, and first connecting members 9 can be installed at both ends, as shown in the attached diagram. Figure 1 As shown, this is a component used to connect the corresponding wiring device. The rotating drum 14 is for the protective curtain 5 to be wound around, and the rotating drum 14 can rotate relative to the fixed shaft 13 as the protective curtain 5 is rolled up or unrolled. Optionally, a bearing can be provided between the rotating drum 14 and the fixed shaft 13 to reduce the frictional resistance of the rotating drum 14 rotating relative to the fixed shaft 13.

[0042] Preferably, a coil spring 12 is also provided between the fixed shaft 13 and the rotating drum 14. The coil spring 12 is wound around the fixed shaft 13, with one end of the coil spring 12 fixed to the fixed shaft 13 and the other end fixed to the inner wall of the rotating drum 14.

[0043] Specifically, as shown in the attached diagram. Figure 2 As shown, a coil spring 12 is further fitted between the fixed shaft 13 and the rotating drum 14. The coil spring 12 can be further preloaded, giving it the tendency to drive the rotating drum 14 to rotate in the direction of winding up the protective curtain 5, thereby automatically winding up the protective curtain 5 after it is unfolded. When the moving part 1 of the object device drives the protective curtain 5 to unfold, the coil spring 12 is subjected to force and deforms or undergoes further deformation, thus possessing elastic potential energy. This allows the coil spring 12 to rewind the protective curtain 5 under the action of elastic potential energy when the moving part 1 returns to its original position relative to the fixed part 2.

[0044] In one embodiment, a second rotating shaft 8 is also included, which is on the same moving part 1 or fixed part 2 as the first rotating shaft 7. The second rotating shaft 8 is parallel to the first rotating shaft 7. The protective curtain 5 is fixedly connected to the moving part 1 or fixed part 2 of the object instrument after changing direction by passing around the second rotating shaft 8 from the first rotating shaft 7.

[0045] Specifically, as shown in the attached diagram. Figure 1 As shown, a second rotating shaft 8 is also provided on the path of the protective curtain 5 from the first rotating shaft 7 to the corresponding connected moving part 1 or fixed part 2. The main purpose of the second rotating shaft 8 is to allow the protective curtain 5 to change direction; that is, the second rotating shaft 8 actually serves as a turning point in the direction of the protective curtain 5. Through the provision of the second rotating shaft 8, the protective curtain 5 can flexibly change direction, thereby adapting to different installation positions and methods. Furthermore, the second rotating shaft 8 can also ensure the tension of the protective curtain 5, thus guaranteeing its protective function. More rotating shafts can be provided as needed for further tensioning or changing direction.

[0046] Furthermore, the structure of the second rotating shaft 8 can be set to be the same as that of the first rotating shaft 7, that is, including a fixed shaft 13 and a rotating cylinder 14, so as to minimize the frictional resistance of the protective curtain 5 at the second rotating shaft 8. The two ends of the fixed shaft 13 of the second rotating shaft 8 are provided with second connecting members 10 for connecting the second rotating shaft 8 with the corresponding moving part 1 or fixed part 2.

[0047] In one embodiment, the first rotating shaft 7 is disposed on the side of the moving part 1, and the second rotating shaft 8 is disposed at the corner of the side and bottom of the moving part 1; wherein, the protective curtain 5 extends along the bottom of the moving part 1 after passing the side of the moving part 1 and the second rotating shaft 8 from the first rotating shaft 7, and connects to the fixing part 2 corresponding to the bottom of the moving part 1.

[0048] Specifically, as shown in the attached diagram. Figure 3 and Figure 4 As shown, according to actual installation needs, the first rotating shaft 7 is installed on the side of the moving part 1, and the second rotating shaft 8 is installed at the corner of the side and bottom of the moving part 1. Then, after the protective curtain 5 reaches the second rotating shaft 8 from the first rotating shaft 7, it changes direction by 90° at the second rotating shaft 8 and connects to the fixing part 2. In this way, the main body of the protective mechanism 3 can be set on the side of the moving part 1, while protecting the bottom of the moving part 1.

[0049] An embodiment of this utility model also provides a treatment bed, which includes a protective mechanism 3 as described in any of the above embodiments. The first rotating shaft 7 of the protective mechanism 3 is fixed to the edge of the movable bed platform of the treatment bed, and the end of the protective curtain 5 wrapped around the first rotating shaft 7 is fixed to the edge of the base supporting the movable bed platform. A driving mechanism 4 is provided between the movable bed platform and the base for driving the movable bed platform to translate relative to the base.

[0050] In the description of this utility model, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0051] While specific embodiments of the present invention have been described herein with reference to them, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.

Claims

1. A safeguard mechanism, characterized by, The protective mechanism comprises a first rotating shaft and a protective curtain, one end of the protective curtain is wound around the first rotating shaft, the other end of the protective curtain is fixed on one of a moving part and a fixed part of an object instrument, and the first rotating shaft is fixed on the other of the moving part and the fixed part. The protective curtain can be unfolded under the driving of the moving part relative to the fixed part to shield the part of the moving part exposed due to movement.

2. The guard mechanism of claim 1, wherein, The first rotating shaft comprises a fixed shaft and a rotating cylinder sleeved outside the fixed shaft, and one end of the protective curtain is wound around the rotating cylinder.

3. The guard mechanism of claim 2, wherein, A coil spring is further arranged between the fixed shaft and the rotating cylinder, one end of the coil spring is fixed to the fixed shaft, and the other end is fixed to the inner wall of the rotating cylinder.

4. Guard mechanism according to claim 2 or 3, characterized in that Both ends of the fixed shaft are provided with a first connecting piece for connecting the moving part or the fixed part of the object instrument.

5. The guard mechanism of claim 1, wherein, The protective curtain is configured as a metal roller shutter structure, a woven fabric structure or a plastic one-piece structure.

6. Guard according to claim 1 or 5, characterized in that A plurality of reinforcing ribs are arranged on the protective curtain, the reinforcing ribs extend along the width direction of the protective curtain, and the reinforcing ribs are uniformly distributed in the length direction of the protective curtain.

7. The guard mechanism of claim 6, wherein, The reinforcing ribs are bonded to the protective curtain, or the reinforcing ribs are woven into the protective curtain, or the reinforcing ribs are integrally formed with the protective curtain.

8. The guard mechanism of claim 1, wherein, A second rotating shaft is further arranged on the moving part or the fixed part together with the first rotating shaft, the second rotating shaft is parallel to the first rotating shaft, and the protective curtain is fixedly connected to the moving part or the fixed part of the object instrument after changing direction from the first rotating shaft to the second rotating shaft.

9. The guard mechanism of claim 8, wherein, The first rotating shaft is arranged on the side surface of the moving part, and the second rotating shaft is arranged at the corner of the side surface and the bottom surface of the moving part. The protective curtain extends along the bottom surface of the moving part after changing direction from the first rotating shaft to the second rotating shaft through the side surface of the moving part, and is connected to the fixed part corresponding to the bottom surface of the moving part.

10. A treatment couch characterised in that, The protective mechanism comprises a first rotating shaft and a protective curtain, one end of the protective curtain is wound around the first rotating shaft, the other end of the protective curtain is fixed on one of a moving part and a fixed part of an object instrument, and the first rotating shaft is fixed on the other of the moving part and the fixed part. The protective curtain can be unfolded under the driving of the moving part relative to the fixed part to shield the part of the moving part exposed due to movement. The first rotating shaft comprises a fixed shaft and a rotating cylinder sleeved outside the fixed shaft, and one end of the protective curtain is wound around the rotating cylinder. A coil spring is further arranged between the fixed shaft and the rotating cylinder, one end of the coil spring is fixed to the fixed shaft, and the other end is fixed to the inner wall of the rotating cylinder. Both ends of the fixed shaft are provided with a first connecting piece for connecting the moving part or the fixed part of the object instrument. The protective curtain is configured as a metal roller shutter structure, a woven fabric structure or a plastic one-piece structure. A plurality of reinforcing ribs are arranged on the protective curtain, the reinforcing ribs extend along the width direction of the protective curtain, and the reinforcing ribs are uniformly distributed in the length direction of the protective curtain. The reinforcing ribs are bonded to the protective curtain, or the reinforcing ribs are woven into the protective curtain, or the reinforcing ribs are integrally formed with the protective curtain. A second rotating shaft is further arranged on the moving part or the fixed part together with the first rotating shaft, the second rotating shaft is parallel to the first rotating shaft, and the protective curtain is fixedly connected to the moving part or the fixed part of the object instrument after changing direction from the first rotating shaft to the second rotating shaft. The first rotating shaft is arranged on the side surface of the moving part, and the second rotating shaft is arranged at the corner of the side surface and the bottom surface of the moving part. The protective curtain extends along the bottom surface of the moving part after changing direction from the first rotating shaft to the second rotating shaft through the side surface of the moving part, and is connected to the fixed part corresponding to the bottom surface of the moving part. The protective mechanism comprises a first rotating shaft and a protective curtain, one end of the protective curtain is wound around the first rotating shaft, the other end of the protective curtain is fixed on one of a moving part and a fixed part of an object instrument, and the first rotating shaft is fixed on the other of the moving part and the fixed part. The protective curtain can be unfolded under the driving of the moving part relative to the fixed part to shield the part of the moving part exposed due to movement. The first rotating shaft comprises a fixed shaft and a rotating cylinder sleeved outside the fixed shaft, and one end of the protective curtain is wound around the rotating cylinder. A coil spring is further arranged between the fixed shaft and the rotating cylinder, one end of the coil spring is fixed to the fixed shaft, and the other end is fixed to the inner wall of the rotating cylinder. Both ends of the fixed shaft are provided with a first connecting piece for connecting the moving part or the fixed part of the object instrument. The protective curtain is configured as a metal roller shutter structure, a woven fabric structure or a plastic one-piece structure. A plurality of reinforcing ribs are arranged on the protective curtain, the reinforcing ribs extend along the width direction of the protective curtain, and the reinforcing ribs are uniformly distributed in the length direction of the protective curtain. The reinforcing ribs are bonded to the protective curtain, or the reinforcing ribs are woven into the protective curtain, or the reinforcing ribs are integrally formed with the protective curtain. A second rotating shaft is further arranged on the moving part or the fixed part together with the first rotating shaft, the second rotating shaft is parallel to the first rotating shaft, and the protective curtain is fixedly connected to the moving part or the fixed part of the object instrument after changing direction from the first rotating shaft to the second rotating shaft. The first rotating shaft is arranged on the side surface of the moving part, and the second rotating shaft is arranged at the corner of the side surface and the bottom surface of the moving part. The protective curtain extends along the bottom surface of the moving part after changing direction from the first rotating shaft to the second rotating shaft through the side surface of the moving part, and is connected to the fixed part corresponding to the bottom surface of the moving part. The protective mechanism comprises a first rotating shaft and a protective curtain, one end of the protective curtain is wound around the first rotating shaft, the other end of the protective curtain is fixed on one of a moving part and a fixed part of an object instrument, and the first rotating shaft is fixed on the other of the moving part and the fixed part. The protective curtain can be unfolded under the driving of the moving part relative to the fixed part to shield the part of the moving part exposed due to movement. The first rotating shaft comprises a fixed shaft and a rotating cylinder sleeved outside the fixed shaft, and one end of the protective curtain is wound around the rotating cylinder. A coil spring is further arranged between the fixed shaft and the rotating cylinder, one end of the coil spring is fixed to the fixed shaft, and the other end is fixed to the inner wall of the rotating cylinder. Both ends of the fixed shaft are provided with a first connecting piece for connecting the moving part or the fixed part of the object instrument. The protective curtain is configured as a metal roller shutter structure, a woven fabric structure or a plastic one-piece structure. A plurality of reinforcing ribs are arranged on the protective curtain, the reinforcing ribs extend along the width direction of the protective curtain, and the reinforcing ribs are uniformly distributed in the length direction of the protective curtain. The reinforcing ribs are bonded to the protective curtain, or the reinforcing ribs are woven into the protective curtain, or the reinforcing ribs are integrally formed with the protective curtain. A second rotating shaft is further arranged on the moving part or the fixed part together with the first rotating shaft, the second rotating shaft is parallel to the first rotating shaft, and the protective curtain is fixedly connected to the moving part or the fixed part of the object instrument after changing direction from the first rotating shaft to the second rotating shaft. The first rotating shaft is arranged on the side surface of the moving part, and the second rotating shaft is arranged at the corner of the side surface and the bottom surface of the moving part. The protective curtain extends along the bottom surface of the moving part after changing direction from the first rotating shaft to the second rotating shaft through the side surface of the moving part, and is connected to the fixed part corresponding to the bottom surface of the moving part. The protective mechanism comprises a first rotating shaft and a protective curtain, one end of the protective curtain is wound around the first rotating shaft, the other end of the protective curtain is fixed on one of a moving part and a fixed part of an object instrument, and the first rotating shaft is fixed on the other of the moving part and the fixed part. The protective curtain can be unfolded under the driving of the moving part relative to the fixed part to shield the part of the moving part exposed due to movement. The first rotating shaft comprises a fixed shaft and a rotating cylinder sleeved outside the fixed shaft, and one end of the protective curtain is wound around the rotating cylinder. A coil spring is further arranged between the fixed shaft and the rotating cylinder, one end of the coil spring is fixed to the fixed shaft, and the other end is fixed to the inner wall of the rotating cylinder. Both ends of the fixed shaft are provided with a first connecting piece for connecting the moving part or the fixed part of the object instrument. The protective curtain is configured as a metal

Images