Automatic tightening mechanism

Abstract

The embodiment of the utility model provides an automatic tightening mechanism, which relates to the technical field of tightening structures, and comprises a body, a free end binding component, a fixed end binding component, a rolling component and a releasing component, the fixed end binding assembly is fixedly connected with the body, and the free end binding assembly is connected with the winding assembly; the winding assembly is installed on the body and used for winding the free end binding assembly. The releasing assembly is installed on the body and used for releasing the rolled free end binding assembly. According to the technical scheme, floating cargo bags of different specifications and sizes can be automatically tightened, meanwhile, the working intensity of astronauts can be relieved, the working efficiency can be improved, human factor intervention is reduced, and the measuring precision of the measuring device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tightening structure technical field, specifically, relate to an automatic tightening mechanism. BACKGROUND

[0002] The on-orbit mass measuring instrument is a mass measuring device used in microgravity environment, and currently when measuring the mass of a cargo bag in a space station, an astronaut needs to manually tighten the cargo bag with a restraint belt and then measure the mass of the cargo bag with the on-orbit mass measuring instrument. With the continuous development of China's space science experiments, various instruments and equipment should develop towards automation to reduce the work intensity of astronauts, improve work efficiency, reduce human intervention, and improve the measurement accuracy of instruments and equipment. The automatic tightening mechanism provided by the utility model can be used to improve the automatic tightening of the cargo bag of the automatic on-orbit mass measuring device, and can ensure that one astronaut can easily realize the automatic tightening of a floating cargo bag of different specifications and sizes. The automatic tightening mechanism has a power input interface matched with the automatic on-orbit mass measuring device, and the power for tightening the cargo bag is provided by the automatic on-orbit mass measuring device, and the size of the tightening force of the cargo bag can be controlled by controlling the size of the input torque.

[0003] Most of the current tightening mechanisms are manually tightened, and some automatic tightening mechanisms integrate the power part in the mechanism, resulting in a large size and weight of the tightening mechanism, which cannot meet the lightweight requirements of the automatic on-orbit mass measuring device for the automatic tightening mechanism. SUMMARY

[0004] The embodiment of the utility model provides an automatic tightening mechanism, which can realize automatic tightening of a cargo bag.

[0005] Other characteristics and advantages of the utility model will become apparent from the following detailed description, or will be learned partly by practice of the utility model.

[0006] According to the first aspect of the embodiment of the utility model, an automatic tightening mechanism is provided, which comprises: a body, a free end restraint assembly, a fixed end restraint assembly, a winding assembly and a release assembly;

[0007] The fixed end restraint assembly is fixedly connected with the body, and the free end restraint assembly is connected with the winding assembly.

[0008] The winding assembly is installed on the body and is used for winding the free end restraint assembly.

[0009] The release assembly is installed on the body and is used for releasing the wound free end restraint assembly.

[0010] In some embodiments of the utility model, based on the foregoing scheme, the fixed end restraint assembly comprises: a fixed end restraint belt and a fixed end lock catch.

[0011] The fixed end binding belt is connected with the fixed end lock buckle at one end and with the body at the other end.

[0012] In some embodiments of the utility model, based on the foregoing scheme, the free end binding assembly comprises: a free end binding belt and a free end lock buckle;

[0013] One end of the free end binding belt is connected with the free end lock buckle, and the other end is connected with the winding assembly;

[0014] After the mechanism tightens the bag, the free end lock buckle is butted with the fixed end lock buckle.

[0015] In some embodiments of the utility model, based on the foregoing scheme, the winding assembly comprises: an end face transmission gear, a first rotating shaft, a first bevel gear, a second bevel gear and a second rotating shaft;

[0016] The first rotating shaft is installed on the body and can rotate, one end of the first rotating shaft is fixedly connected with the first bevel gear, the other end is fixedly connected with the release assembly, and the free end binding assembly is connected on the first rotating shaft;

[0017] The first bevel gear and the second bevel gear are engaged, and the second bevel gear is fixedly connected with the second rotating shaft;

[0018] The second rotating shaft is installed on the body and can rotate, and the end face transmission gear is fixedly connected with the second rotating shaft.

[0019] In some embodiments of the utility model, based on the foregoing scheme, the release assembly comprises: a ratchet release button, a ratchet mechanism and a coil spring;

[0020] The ratchet release button is installed on the body and can slide relative to the body;

[0021] The ratchet release button is connected with the ratchet mechanism;

[0022] The ratchet mechanism is coaxially installed with the coil spring and can rotate simultaneously;

[0023] The coil spring is fixedly connected with the first rotating shaft.

[0024] In some embodiments of the utility model, based on the foregoing scheme, the ratchet mechanism comprises: a ratchet wheel and a pawl;

[0025] The pawl is movably installed on the body;

[0026] One end of the pawl is connected with the ratchet release button, and the other end is in contact with the ratchet wheel;

[0027] The ratchet wheel is coaxially installed with the coil spring.

[0028] In some embodiments of the utility model, based on the foregoing scheme, the pawl is movably installed on the body through a screw, and the pawl can rotate based on the screw.

[0029] In some embodiments of the utility model, based on the foregoing scheme, a sliding groove is formed at one end of the pawl connected with the ratchet wheel release button, a pin is arranged on the ratchet wheel release button, and the pin can freely slide in the sliding groove.

[0030] In some embodiments of the utility model, based on the foregoing scheme, a compression spring is arranged at the lower end of the ratchet wheel release button.

[0031] In some embodiments of the utility model, based on the foregoing scheme, the release assembly further comprises a coil spring protection box.

[0032] The coil spring protection box is fixed on the body through the first rotating shaft;

[0033] The coil spring is arranged in the coil spring protection box.

[0034] The technical scheme of the utility model can realize automatic tightening of floating cargo bags of different specifications and sizes, reduce the working intensity of astronauts, improve the working efficiency, reduce the intervention of human factors, and improve the measurement accuracy of the measuring device.

[0035] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0036] The drawings incorporated into the specification and forming a part of the specification, show embodiments consistent with the utility model, and together with the specification, serve to explain the principles of the utility model. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the drawings without creative labor for those skilled in the art. In the drawings:

[0037] Figure 1 A front view of an automatic tightening mechanism according to one embodiment of the utility model is shown;

[0038] Figure 2 A top view of an automatic tightening mechanism according to one embodiment of the utility model is shown;

[0039] Figure 3 A schematic view of a tightened cargo bag according to one embodiment of the utility model is shown;

[0040] Figure 4 Fig. 1 shows a partial schematic view of an automatic tightening mechanism according to one embodiment of the present application;

[0041] Figure 5 Fig. 2 shows an A-view of a partial schematic view of an automatic tightening mechanism according to one embodiment of the present application;

[0042] Figure 6 Fig. 3 shows a B-view of a partial schematic view of an automatic tightening mechanism according to one embodiment of the present application;

[0043] Figure 7 Fig. 4 shows a B-view of a partial schematic view of an automatic tightening mechanism according to one embodiment of the present application after the coil spring and the coil spring protection are removed.

[0044] BRIEF DESCRIPTION OF DRAWINGS

[0045] 1 - body, 2 - free end binding strap, 3 - free end lock, 4 - fixed end binding strap, 5 - fixed end lock, 6 - end face transmission tooth, 7 - ratchet release button, 8 - first rotating shaft, 9 - coil spring, 10 - coil spring protection box, 11 - screw, 12 - pawl, 13 - compression spring, 14 - pin, 15 - ratchet, 16 - first bevel gear, 17 - second bevel gear, 18 - second rotating shaft, 19 - luggage bag. DETAILED DESCRIPTION

[0046] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the inventive aspects to those skilled in the art. Like reference numerals may refer to like elements throughout.

[0047] It should be noted that the terms "first", "second", and the like, used in the description and the claims of the present application as well as the above description of the drawings should not be construed as necessarily implying a specific order or sequence among or between the objects to which they are used. It is to be understood that the objects discussed using such terms can be interchanged under appropriate circumstances such that the embodiments of the application described herein can be carried out in other than the described order.

[0048] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0049] Some embodiments of the present application will be described in detail with reference to the drawings. In the case of no conflict, the following examples and features in the examples can be combined with each other.

[0050] To solve the technical problems existing in the prior art, the embodiments of the present application provide an automatic tightening mechanism, which specifically comprises: a body, a free end binding assembly, a fixed end binding assembly, a winding assembly and a releasing assembly;

[0051] The fixed end binding assembly is fixedly connected with the body, and the free end binding assembly is connected with the winding assembly.

[0052] The winding assembly is installed on the body and is used for winding the free end binding assembly.

[0053] The releasing assembly is installed on the body and is used for releasing the wound free end binding assembly.

[0054] It can be understood that when the package is tightened, the fixed end binding assembly is fixed, and the free end binding assembly is over the package and is connected with the fixed end binding assembly to tighten the package.

[0055] In some feasible embodiments, based on the foregoing scheme, the fixed end binding assembly comprises: a fixed end binding belt and a fixed end lock buckle.

[0056] One end of the fixed end binding belt is connected with the fixed end lock buckle, and the other end is connected with the body.

[0057] In some feasible embodiments, based on the foregoing scheme, the free end binding assembly comprises: a free end binding belt and a free end lock buckle.

[0058] One end of the free end binding belt is connected with the free end lock buckle, and the other end is connected with the winding assembly.

[0059] After the mechanism tightens the package, the free end lock buckle is connected with the fixed end lock buckle.

[0060] For example, refer to Figure 1 , which shows a front view of an automatic tightening mechanism according to an embodiment of the present application.

[0061] For example, refer to Figure 2 , which shows a top view of an automatic tightening mechanism according to an embodiment of the present application.

[0062] For example, refer to Figure 1 , Figure 2As shown, an automatic tightening mechanism is shown, comprising a body 1, a free end binding belt 2, a free end lock 3, a fixed end binding belt 4 and a fixed end lock 5; wherein the free end binding belt 2 and the free end lock 3 constitute a free end binding assembly, and the fixed end binding belt 4 and the fixed end lock 5 constitute a fixed end binding assembly; one end of the fixed end binding belt 4 is connected with the fixed end lock 5, and the other end is connected with the body 1, one end of the free end binding belt 2 is connected with the free end lock 3, and the other end is connected with a winding assembly.

[0063] It can be understood that the winding assembly and the releasing assembly are mainly arranged inside the body 1.

[0064] For example, referring to Figure 3 , a schematic diagram of a tightening bag according to an embodiment of the utility model is shown.

[0065] As Figure 3 shown, when the bag 19 is placed on the body 1, the free end binding belt 2 and the fixed end binding belt 4 are connected together through the free end lock 3 and the fixed end lock 5 to realize the fastening of the bag 19.

[0066] In some possible embodiments, based on the foregoing scheme, the winding assembly comprises an end face transmission gear, a first rotating shaft, a first bevel gear, a second bevel gear and a second rotating shaft;

[0067] The first rotating shaft is rotatably installed on the body, one end of the first rotating shaft is fixedly connected with the first bevel gear, the other end is fixedly connected with the releasing assembly, and the free end binding assembly is connected on the first rotating shaft;

[0068] The first bevel gear and the second bevel gear are engaged, and the second bevel gear is fixedly connected with the second rotating shaft;

[0069] The second rotating shaft is rotatably installed on the body, and the end face transmission gear is fixedly connected with the second rotating shaft.

[0070] It can be understood that the first rotating shaft is a key component for realizing the winding and releasing of the free end binding assembly, and the free end binding assembly is connected on the first rotating shaft, so that when the first rotating shaft rotates, the winding or releasing of the free end binding assembly can be realized. The first rotating shaft can rotate through the power transmitted by the end face transmission gear, and can also rotate through the power transmitted by the releasing assembly. After receiving the power from two different sources, the first rotating shaft rotates in the opposite direction, for example, the first rotating shaft rotates in the positive direction to realize the winding, and then rotates in the reverse direction after receiving the power transmitted by the releasing assembly.

[0071] For example, referring to Figure 4Figure 1 shows a partial schematic view of an automatic tightening mechanism according to an embodiment of the present application.

[0072] For example, referring to Figure 5 Figure 2 shows an A-view of a partial schematic view of an automatic tightening mechanism according to an embodiment of the present application.

[0073] As shown in Figure 4 and Figure 5 , the winding assembly comprises an end face transmission tooth 6, a first rotating shaft 8, a first bevel gear 16, a second bevel gear 17 and a second rotating shaft 18.

[0074] The rotating shaft 9 is installed on the body 1 and rotatable, one end of the rotating shaft 9 is fixedly connected with the first bevel gear 16, and the other end is fixedly connected with the releasing assembly. The first bevel gear 16 and the second bevel gear 17 are engaged, the second bevel gear 17 is fixedly connected with the second rotating shaft 18, the second rotating shaft 18 is installed on the body 1 and rotatable, and the end face transmission tooth 6 is fixedly connected with the second rotating shaft 18.

[0075] In some possible embodiments, based on the foregoing scheme, the releasing assembly comprises: a ratchet release button, a ratchet mechanism and a winding spring;

[0076] The ratchet release button is installed on the body and slidable relative to the body;

[0077] The ratchet release button is connected with the ratchet mechanism;

[0078] The ratchet mechanism is coaxially installed with the winding spring and can rotate simultaneously;

[0079] The winding spring is fixedly connected with the first rotating shaft.

[0080] It can be understood that after the winding spring is fixedly connected with the first rotating shaft, the first rotating shaft rotates to drive the winding spring to rotate, since the ratchet mechanism is coaxially installed with the winding spring, the ratchet mechanism also rotates simultaneously, so that the winding spring and the ratchet mechanism rotate with the first rotating shaft when the winding free end restraint assembly is wound, and the winding spring is controlled to stop by the ratchet mechanism after winding is stopped, the winding spring is released by the ratchet mechanism when the free end restraint assembly is released, the first rotating shaft is driven to rotate by the winding spring, and the release of the free end restraint assembly is realized.

[0081] In some possible embodiments, based on the foregoing scheme, the ratchet mechanism comprises: a ratchet and a pawl;

[0082] The pawl is movably installed on the body;

[0083] One end of the pawl is connected with the ratchet release button, and the other end is in contact with the ratchet;

[0084] The ratchet is coaxially installed with the winding spring.

[0085] In some possible embodiments, based on the foregoing scheme, the pawl is movably mounted on the body by a screw, and the pawl can rotate based on the screw.

[0086] It can be understood that the pawl mounted by the screw is similar to a lever, and when one end of the pawl moves downward, the other end moves upward.

[0087] In some possible embodiments, based on the foregoing scheme, a sliding groove is formed at one end of the pawl connected with the ratchet release button, and a pin is arranged on the ratchet release button, and the pin can freely slide in the sliding groove.

[0088] It can be understood that the pin and the sliding groove are arranged to enable the pawl to move with the ratchet release button, and when the ratchet release button is pressed, one end of the pawl connected with the ratchet release button moves downward, and the other end moves upward to leave the ratchet, thereby releasing the power of the coil spring to enable the first rotating shaft to rotate.

[0089] In some possible embodiments, based on the foregoing scheme, a compression spring is arranged at a lower end of the ratchet release button.

[0090] It can be understood that the compression spring facilitates the rebound of the ratchet release button after being pressed.

[0091] In some possible embodiments, based on the foregoing scheme, the release assembly further comprises a coil spring protection box.

[0092] The coil spring protection box is fixed on the body through the first rotating shaft.

[0093] The coil spring is arranged in the coil spring protection box.

[0094] It can be understood that the coil spring protection box is used to protect the coil spring, and the coil spring has elasticity, and without the coil spring protection box, the coil spring may run around when being released, thereby affecting the normal work of the automatic tightening mechanism.

[0095] For example, FIG. 2 shows a B-direction view of a partial schematic view of an automatic tightening mechanism according to an embodiment of the present application. Figure 6

[0096] For example, FIG. 3 shows a B-direction view of a partial schematic view of an automatic tightening mechanism according to an embodiment of the present application after the coil spring and the coil spring protection box are removed. Figure 7 For example, FIG. 4 shows a B-direction view of a partial schematic view of an automatic tightening mechanism according to an embodiment of the present application after the coil spring and the coil spring protection box are removed.

[0097] Figure 6 For example, FIG. 5 shows a B-direction view of a partial schematic view of an automatic tightening mechanism according to an embodiment of the present application after the coil spring and the coil spring protection box are removed. Figure 7 ​​As shown, the release assembly comprises: a ratchet release button 7, a coil spring 9 and a ratchet mechanism, wherein the ratchet mechanism is composed of a pawl 12 and a ratchet wheel 15, the pawl 12 is fixed on the body 1 by a screw 11, the pawl 12 and the body 1 can rotate with each other, the pawl 12 has a sliding groove at one end, a pin 14 can freely slide in the sliding groove, the pin 14 is fixed on the ratchet release button 7, the ratchet release button 7 is installed on the body 1 and can slide with the body 1, and the ratchet release button has a compression spring 13 at the lower end.

[0098] The coil spring protection box 10 passes through the first rotating shaft 8 and is fixed on the body 1, one end of the coil spring 9 is fixed in the open slot at one end of the first rotating shaft 8, and the other end of the coil spring 9 is fixed in the clamping groove of the coil spring protection box 10.

[0099] The working principle of the automatic tightening mechanism is as follows: Figure 1 As shown, when the ratchet release button 7 is pressed down, the free end 2 of the binding belt can be freely lengthened, and when the free end 2 of the binding belt is released, the automatic winding of the binding belt into the body 1 is realized by the coil spring 9. Figure 3 As shown, the cargo bag 20 is placed on the automatic tightening mechanism, the free end 2 of the binding belt is pulled out, and the free end lock buckle 3 is connected with the fixed end lock buckle 5, at this time, the ratchet release button is released, the external power drives the rotating shaft 9 to rotate and wind the free end binding belt 2, and at the same time, the ratchet mechanism ensures that the binding belt can only be tightened and cannot be loosened. When it is needed to release the cargo bag, the binding belt will be loosened by pressing down the ratchet release button 7, and the free end lock buckle 3 and the fixed end lock buckle 5 can be disconnected.

[0100] In summary, the automatic tightening mechanism can realize the automatic tightening of floating cargo bags of different specifications and sizes, reduces the working strength of astronauts and improves the working efficiency.

[0101] Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. The present application is intended to cover any variations, uses or adaptive changes of the present application following the general principles of the present application and including commonly known or customary technical methods not disclosed in the present application. It should be understood that the present application is not limited to the precise structures described and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. An automatic tightening mechanism characterized by, The utility model relates to a kind of mechanism for tightening bag, including: Main body, free end binding assembly, fixed end binding assembly, winding assembly and release assembly; The fixed end binding assembly is fixedly connected with the main body, and the free end binding assembly is connected with the winding assembly; The winding assembly is installed on the main body, and is used to wind the free end binding assembly; The release assembly is installed on the main body, and is used to release the free end binding assembly wound.

2. The mechanism of claim 1, wherein, The fixed end binding assembly includes a fixed end binding belt and a fixed end lock buckle. One end of the fixed end binding belt is connected with the fixed end lock buckle, and the other end is connected with the main body.

3. The mechanism of claim 2, wherein, The free end binding assembly includes a free end binding belt and a free end lock buckle. One end of the free end binding belt is connected with the free end lock buckle, and the other end is connected with the winding assembly. After the mechanism tightens the bag, the free end lock buckle is docked with the fixed end lock buckle.

4. The mechanism according to any one of claims 1-3, characterized in that The winding assembly includes an end face transmission gear, a first rotating shaft, a first bevel gear, a second bevel gear and a second rotating shaft. The first rotating shaft is installed on the main body and can rotate, one end of the first rotating shaft is fixedly connected with the first bevel gear, the other end is fixedly connected with the release assembly, and the free end binding assembly is connected on the first rotating shaft. The first bevel gear and the second bevel gear are engaged, and the second bevel gear is fixedly connected with the second rotating shaft. The second rotating shaft is installed on the main body and can rotate, and the end face transmission gear is fixedly connected with the second rotating shaft.

5. The mechanism of claim 4, wherein, The release assembly includes a ratchet release button, a ratchet mechanism and a coil spring. The ratchet release button is installed on the main body and can slide relative to the main body. The ratchet release button is connected with the ratchet mechanism. The ratchet mechanism is coaxially installed with the coil spring and can rotate simultaneously. The coil spring is fixedly connected with the first rotating shaft.

6. The mechanism of claim 5, wherein, The ratchet mechanism includes a ratchet and a pawl. The pawl is movably installed on the main body. One end of the pawl is connected with the ratchet release button, and the other end is in contact with the ratchet. The ratchet is coaxially installed with the coil spring.

7. The mechanism of claim 6, wherein, The pawl is movably installed on the main body through a screw, and the pawl can rotate based on the screw.

8. The mechanism of claim 6, wherein, The end of the pawl connected with the ratchet release button is provided with a sliding groove, and the ratchet release button is provided with a pin, which can freely slide in the sliding groove.

9. The mechanism of claim 5, wherein, The lower end of the ratchet release button is provided with a compression spring.

10. The mechanism of claim 5, wherein, The release assembly further includes a coil spring protection box. The coil spring protection box is fixed on the main body through the first rotating shaft. The coil spring is arranged in the coil spring protection box.

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