An automatic reset device

Abstract

The present invention belongs to the technical field of mechanical design. Specifically, the present invention relates to an automatic reset device, which includes a base, a core shaft and a torsion spring; the base is used to carry the core shaft and the torsion spring; the core shaft is installed on the base; the torsion spring is sleeved outside the core shaft, with one end being the inner connection end connected to the base, and the other end being the outer connection end, and the outer connection end is connected to an insulating medium. When the automatic reset device of the present invention is in use, the base is installed on the installation carrier, the inner connection end of the torsion spring is connected to the base, and the outer connection end is connected to the insulating medium. When the insulating medium is flipped by an external force, the torsion spring generates an elastic deformation under the torque, and when the external force disappears, it can flip the insulating medium in the opposite direction to the direction in which it is flipped by the external force, so as to achieve the effect of automatic reset of the insulating medium, which is convenient for people to use when applied to the insulating medium.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical design. Specifically, the present invention relates to an automatic reset device. Background Art

[0002] In production and life, isolation media are widely used. For example: doors are used to isolate roads, windows are used to isolate the indoor and outdoor, wardrobe doors are used to isolate the space inside and outside the wardrobe, and trash can lids are used to isolate the garbage inside the trash can, etc.

[0003] In many cases, the use of isolation media can be one-way. For example: when passing by, just open the door; when breathing fresh air, just open the window; when putting clothes, just open the wardrobe door; when emptying the trash, just open the trash can lid. After the one-way use mode completes its use effect, for safety, environmental protection and other factors, people have to restore the isolation media to the initial state again, and this step is often reluctant to be done by people. With the acceleration of the rhythm of production and life, people hope that the use of isolation media is simple. For example: the door can close itself after being opened, the window can close automatically after being opened, the trash can lid can cover itself automatically after being lifted to empty the trash, etc., while the prior art does not provide a better implementation scheme. Summary of the Invention

[0004] The present invention provides an automatic reset device, which can solve the technical problem that the isolation media in the prior art cannot be automatically reset.

[0005] To solve the above problems, the present invention provides an automatic reset device, and its technical solution is as follows:

[0006] An automatic reset device includes a base, a core shaft and a torsion spring; the base is used to carry the core shaft and the torsion spring; the core shaft is installed on the base; the torsion spring is sleeved outside the core shaft, one end is an inner connection end, connected to the base, and the other end is an outer connection end, externally connecting the isolation medium.

[0007] The automatic reset device as described above is further preferably: the base includes a base plate, a first bracket and a second bracket; the first bracket and the second bracket are installed on the base plate, and the first bracket and the second bracket are arranged in parallel; a first mounting hole is provided on the first bracket, and a second mounting hole is provided on the second bracket. The first mounting hole is used to install the inner connection end, and the second mounting hole is used to install the core shaft.

[0008] The automatic reset device as described above is further preferably: the base plate is provided with a first external connection hole and a second external connection hole; a hook bolt and a bolt washer are provided in the first external connection hole, and the bolt washer is a spring washer. The hook bolt is used to externally connect and install the carrier; the second external connection hole is used to externally connect the isolation medium installation part.

[0009] The automatic reset device as described above is further preferably: the mandrel includes a mandrel body, a free end and an assembly end; the mandrel body is used to carry the torsion spring, the free end and the assembly end are respectively located on both sides of the mandrel body, and the assembly end is installed in the second mounting hole.

[0010] The automatic reset device as described above is further preferably: the assembly end is provided with internal threads, and the internal threads are connected to the assembly bolt; a first washer and a second washer are provided between the assembly bolt and the second bracket, the first washer is connected to the second bracket, the second washer is respectively connected to the first washer and the assembly bolt, and the second washer is a spring washer.

[0011] The automatic reset device as described above is further preferably: further includes an adjusting mechanism, the adjusting mechanism is installed on the first bracket and connected to the inner connection end for adjusting the initial torque of the torsion spring.

[0012] The automatic reset device as described above is further preferably: the adjusting mechanism includes an adjusting shaft, a ratchet, an adjusting cover, a pawl and a compression spring; the adjusting shaft is installed in the first mounting hole, rotatably connected to the first mounting hole, and connected to the inner connection end; the ratchet is installed on the adjusting shaft; the adjusting cover is installed on the first bracket and located outside the ratchet; the pawl is installed between the adjusting cover and the ratchet; the compression spring is installed between the ratchet and the pawl.

[0013] The automatic reset device as described above is further preferably: the adjusting shaft includes a bearing end, a mating portion and an extending end; the bearing end includes a polygonal column section and a bearing disk, the ratchet is sleeved on the polygonal column section and abuts against the bearing disk; the mating portion is connected to the bearing end, installed in the first mounting hole, and rotatably connected to the first mounting hole; the extending end is connected to the mating portion and is located inside the mandrel.

[0014] The automatic reset device as described above is further preferably: the adjusting cover includes a cover plate and a cover body; the cover body is in a cylindrical shape and is installed above the first bracket; the cover plate is installed on the cover body, the cover plate is provided with a light hole, the cover plate is used to press the ratchet, and the light hole is used to provide an extending position for the polygonal column section.

[0015] The automatic reset device as described above is further preferably: the pawl is in a cylindrical shape, and the height of the pawl is less than the thickness of the ratchet.

[0016] Analysis shows that compared with the prior art, the advantages and beneficial effects of the present invention are:

[0017] When the automatic resetting device provided by the present invention is used, the base is installed on the mounting carrier, the inner end of the torsion spring is connected to the base, and the outer end is connected to the isolation medium. When the isolation medium is overturned by an external force, the torsion spring is subjected to torque to produce elastic deformation, and when the external force disappears, the isolation medium can be overturned in the opposite direction of the overturning by the external force, thereby achieving the effect of automatic resetting of the isolation medium, and can be convenient for people to use when applied to the isolation medium.

[0018] Furthermore, the automatic reset device also includes an adjustment mechanism, which can adjust the initial torque of the torsion spring, so that the isolation medium can be effortlessly turned over and automatically reset after the automatic reset device is applied, which further facilitates people's use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the automatic resetting device of the present invention.

[0020] Figure 2 It is a structural schematic diagram of the automatic reset device after the torsion spring is cut.

[0021] Figure 3 for Figure 1 Top view of the .

[0022] Figure 4 for Figure 3 Schematic diagram of the structure after removing the cover.

[0023] In the figure: 1-base plate; 2-first bracket; 3-torsion spring; 4-second bracket; 5-first washer; 6-second washer; 7-assembly bolt; 8-core shaft; 9-external end; 10-isolating medium; 11-second external hole; 12-hook bolt; 13-screw; 14-ratchet; 15-adjusting shaft; 16-cover plate; 17-pawl; 18-polygonal column segment; 19-cover body; 20-carrying plate; 21-matching part; 22-internal end; 23-extending end; 24-isolating medium mounting piece; 25-compression spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] Please refer to Figures 1 to 4 ,in, Figure 1 It is a structural schematic diagram of the automatic resetting device of the present invention; Figure 2 It is a structural schematic diagram of the automatic reset device after the torsion spring is cut; Figure 3 for Figure 1 A top view of Figure 4 for Figure 3 Schematic diagram of the structure after removing the cover.

[0027] like Figure 1 and Figure 2 As shown, the present invention provides an automatic resetting device, which mainly includes a base, a core shaft 8 and a torsion spring 3; the base can carry the core shaft 8 and the torsion spring 3; the core shaft 8 is installed on the base, can carry the installation of the torsion spring 3 and can limit the deformation of the torsion spring 3 when in use, so that the torsion spring 3 does not undergo radial deformation; the torsion spring 3 is sleeved on the outside of the core shaft 8, one end of which is an inner end 22 connected to the base, and the other end is an outer end 9, which is externally connected to an isolation medium 10 (in the present invention, the isolation medium 10 can rotate along an axis after being subjected to an external force).

[0028] Specifically, when the automatic reset device provided by the present invention is used, the base is installed on the mounting carrier, the inner end 22 of the torsion spring 3 is connected to the base, and the outer end 9 is connected to the isolation medium 10 (for example, when applied to a civil air defense door, the mounting carrier is a door frame or a wall, and the isolation medium 10 that needs to be automatically closed is a civil air defense door). When the isolation medium 10 is overturned by an external force, the torsion spring 3 is elastically deformed by the torque, and when the external force disappears, the isolation medium 10 can be overturned in the opposite direction of the external force, thereby achieving the effect of automatic reset of the isolation medium 10, which can facilitate people's use when applied to the isolation medium 10.

[0029] Further, such as Figure 1 and Figure 2As shown, in the present invention, the base includes a base plate 1, a first bracket 2, and a second bracket 4. The first bracket 2 and the second bracket 4 are installed on the base plate 1. The base plate 1, the first bracket 2, and the second bracket 4 can be an integral structure or can be connected into a whole by processes such as full welding. The first bracket 2 and the second bracket 4 are arranged in parallel; a first mounting hole is provided on the first bracket 2, and a second mounting hole is provided on the second bracket 4. The first mounting hole can be connected to the inner connection end 22, and the second mounting hole can mount the core shaft 8. The inner connection end 22 of the torsion spring 3 is connected to the first mounting hole, and the outer connection end 9 is connected to the isolation medium 10, and can store the reset power when the isolation medium 10 is flipped.

[0030] Further, as Figure 1 and Figure 3 shown, in the present invention, a first external connection hole and a second external connection hole 11 are provided on the base plate 1. A hook bolt 12 and a bolt washer are provided in the first external connection hole. The hook bolt 12 is externally connected to the mounting carrier and can fix the base on the mounting carrier. The bolt washer is located between the hook bolt 12 and the base plate 1. The bolt washer is a spring washer and can prevent the hook bolt 12 from loosening. The second external connection hole 11 is externally connected to the isolation medium mounting member 24, so as to improve the installation accuracy of the automatic reset device and further extend the service life of the present invention.

[0031] Further, as Figure 1 、 Figure 2 and Figure 4 shown, in the present invention, the core shaft 8 includes a core shaft 8 main body, a free end, and an assembly end; the core shaft 8 main body can carry the torsion spring 3, the free end and the assembly end are respectively located on both sides of the core shaft 8 main body, and the assembly end is installed in the second mounting hole and is fixedly connected to the second mounting hole.

[0032] Preferably, the assembly end is provided with an internal thread, and the internal thread is connected to the assembly bolt 7, that is, the core shaft 8 is installed on the second bracket 4 by means of bolt fastening and is fixedly connected to the second bracket 4. A first washer 5 and a second washer 6 are provided between the assembly bolt 7 and the second bracket 4. The first washer 5 is connected to the second bracket 4. The inner diameter of the first gasket is smaller than the diameter of the second mounting hole, while the outer diameter is larger than the diameter of the second mounting hole, which can ensure that the assembly bolt 7 fixes the core shaft 8 on the second bracket 4. The second washer 6 is respectively connected to the first washer 5 and the assembly bolt 7. The second washer 6 is a spring washer and can provide a pre-tightening force for the installation of the core shaft 8 to prevent the core shaft 8 from loosening after installation.

[0033] Further, as Figure 1 and Figure 2As shown in the figure, in the present invention, an adjusting mechanism is further included. The adjusting mechanism is installed on the first bracket 2 and is connected to the inner connection end 22, and can adjust the initial torque of the torsion spring 3, so that the isolation medium 10 can be flipped effortlessly and can automatically reset after applying the automatic reset device.

[0034] Preferably, the adjusting mechanism includes an adjusting shaft 15, a ratchet 14, an adjusting cover, a pawl 17 and a compression spring 25; the adjusting shaft 15 is installed in the first mounting hole, is rotatably connected to the first mounting hole, and is connected to the inner connection end 22; the ratchet 14 is installed on the adjusting shaft 15; the adjusting cover is installed on the first bracket 2 and is located outside the ratchet 14; the pawl 17 is installed between the adjusting cover and the ratchet 14, along the reset direction of the torsion spring 3, the pawl 17 is located behind the ratchet 14; the compression spring 25 is installed between the ratchet 14 and the pawl 17. When adjusting the initial torque, twisting the adjusting shaft can realize the adjustment of the initial torque of the compression spring 25. When in use, since the pawl 17 is located behind the ratchet 14 in the installation direction, based on the one-way rotation characteristic of the ratchet 14, the initial torque will only increase and will not decrease, which can make up for the elastic force attenuation of the torsion spring 3 to a certain extent.

[0035] Furthermore, as Figure 1 and Figure 2 shown in the figure, in the present invention, the adjusting shaft 15 includes a bearing end, a mating portion 21 and an extending end 23. The bearing end includes a polygonal column section 18 and a bearing disc 20. The polygonal column section 18 is preferably a regular polygon. The ratchet 14 is sleeved on the polygonal column section 18 and abuts against the bearing disc 20, and can rotate synchronously with the adjusting shaft 15. The mating portion 21 is connected to the bearing end, is installed in the first mounting hole, is rotatably connected to the first mounting hole, and is preferably a clearance fit of H8 / f7. The extending end 23 is connected to the mating portion 21 and is located inside the core shaft 8 and does not contact the core shaft 8, so as to reduce the volume of the automatic reset device.

[0036] Furthermore, as Figure 1 and Figure 2 shown in the figure, in the present invention, the adjusting cover includes a cover plate 16 and a cover body 19; the cover body 19 is in a cylindrical shape, and a plurality of threaded holes are evenly distributed on the top surface. The cover body 19 is installed above the first bracket 2 and is fixedly connected to the first bracket 2, such as by welding. The cover plate 16 is installed on the cover body 19. The cover plate 16 is provided with a light hole and a plurality of through holes corresponding to the threaded holes one by one. The cover plate 16 and the cover body 19 are fastened by a plurality of screws 13. When in use, the cover plate 16 can press the ratchet 14 to lock the ratchet 14; the light hole can provide an extending position for the polygonal column section 18, so as to facilitate the operation during torque adjustment.

[0037] Preferably, the pawl 17 is a cylinder, and the height of the pawl 17 is less than the thickness of the ratchet wheel 14, which can reduce the resistance during torque adjustment and avoid uncertain factors caused by the pressing of the cover plate 16 on the pawl 17.

[0038] As Figures 1 to 4 shown, the installation and adjustment process of the present invention will be described below:

[0039] First step, assemble the automatic reset device completely;

[0040] Second step, install the base on the installation carrier and the isolation medium installation part 24, install the external end 9 on the isolation medium 10, and ensure that the connection point between the external end 9 and the isolation medium 10 and the axis connection line of the torsion spring 3 are parallel to the flipping plane of the isolation medium 10;

[0041] Third step, place the isolation medium 10 in the reset position, loosen the screw 13 between the cover plate 16 and the cover body 19, turn the polygonal column section 18 of the torsion adjustment shaft 15 to adjust the initial torque of the torsion spring 3, and fix the screw 13 after the adjustment is completed, then the installation and debugging of the automatic reset device can be completed.

[0042] As is known by technical common sense, the present invention can be implemented by other embodiments that do not deviate from its spiritual essence or essential features. Therefore, the above - disclosed embodiments are illustrative in all aspects and not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are encompassed by the present invention.

Claims

1. An automatic reset device, characterized in that, Comprising: A base, a mandrel, and a torsion spring; The base is used to carry the mandrel and the torsion spring; the mandrel is installed on the base; the torsion spring is sleeved outside the mandrel, one end is an inner connection end connected to the base, and the other end is an outer connection end for external isolation of the medium; The base includes a base plate, a first bracket, and a second bracket; The first bracket and the second bracket are installed on the base plate, and the first bracket and the second bracket are arranged in parallel; a first mounting hole is provided on the first bracket, a second mounting hole is provided on the second bracket, the first mounting hole is used to install the inner connection end, and the second mounting hole is used to install the mandrel; The mandrel includes a mandrel body, a free end, and an assembly end; The mandrel body is used to carry the torsion spring, the free end and the assembly end are respectively located on both sides of the mandrel body, and the assembly end is installed in the second mounting hole; An adjusting mechanism, the adjusting mechanism is installed on the first bracket and connected to the inner connection end for adjusting the initial torque of the torsion spring; The adjusting mechanism includes an adjusting shaft, a ratchet, an adjusting cover, a pawl, and a compression spring; The adjusting shaft is installed in the first mounting hole, rotatably connected to the first mounting hole, and connected to the inner connection end; the ratchet is installed on the adjusting shaft; the adjusting cover is installed on the first bracket and located outside the ratchet; each tooth of the ratchet corresponds to a pawl and a compression spring, and the pawl is installed between the adjusting cover and the ratchet; the compression spring is installed between the ratchet and the pawl; The adjusting shaft includes a bearing end, a mating portion, and an extending end; The bearing end includes a polygonal column section and a bearing disc, the ratchet is sleeved on the polygonal column section and abuts against the bearing disc; the mating portion is connected to the bearing end, installed in the first mounting hole, and rotatably connected to the first mounting hole; the extending end is connected to the mating portion and is located inside the mandrel; The adjusting cover includes a cover plate and a cover body; The cover body is in a cylindrical shape and is installed above the first bracket; the cover plate is installed on the cover body, a light hole is provided on the cover plate, the cover plate is used to press the ratchet, and the light hole is used to provide an extending position for the polygonal column section.

2. The automatic reset device according to claim 1, wherein: The base plate is provided with a first external connection hole and a second external connection hole; A hook bolt and a bolt washer are provided in the first external connection hole, the bolt washer is a spring washer, and the hook bolt is used for external installation of a carrier; the second external connection hole is used for external installation of a medium isolation member.

3. The automatic reset device according to claim 1, wherein: The assembly end is provided with an internal thread, and the internal thread is connected to an assembly bolt; a first washer and a second washer are provided between the assembly bolt and the second bracket, the first washer is connected to the second bracket, the second washer is respectively connected to the first washer and the assembly bolt, and the second washer is a spring washer.

4. The automatic reset device according to claim 1, wherein: The pawl is in the shape of a cylinder, and the height of the pawl is less than the thickness of the ratchet wheel.

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