Self-resetting assembly and industrial safety door
By incorporating self-resetting components and a mother frame design, the problem of unsmooth closure of industrial safety doors when opening and closing at large angles has been solved, achieving stable self-resetting and improved reliability of the safety doors, thus broadening their applicability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-03-27
AI Technical Summary
Existing industrial safety doors do not close smoothly when opened at large angles, and the load-bearing and closing structures are on the same hinge, affecting reliability.
It adopts a self-resetting component, including a bracket, a coupling, a connecting part and a spring. Through the cooperation of the guide groove and the guide protrusion, the rotating part automatically resets under the restoring force of the spring. It has independent load-bearing and closing functions, and uses a mother frame and a sub-frame to realize the length adjustment of the safety door.
It achieves stable self-resetting of the safety door when opening and closing at large angles, improves structural reliability and applicability, and enhances the smoothness and applicability of the safety door's self-closing.
Smart Images
Figure CN224048954U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of self-resetting assembly and safety door, mainly applied to industrial safety door. BACKGROUND
[0002] Industrial safety door, also known as self-closing safety door, is a safety device used in industrial environments. Its main function is to automatically close after personnel pass through to prevent the risk of falling and falling. When the on-site operator pushes open the self-closing safety door to enter the platform, the door will automatically close after leaving, providing a safety protection measure.
[0003] In the prior art, safety doors generally use torsional springs to achieve self-closing function. However, this structure has the following disadvantages:
[0004] 1. The opening and closing angle is small, especially when the door is opened more than 90°, there may be problems with smooth closing, or even automatic closing may not be possible.
[0005] 2. For heavy safety doors, the load and closing are arranged on the same hinge (generally using a hinge connection method), and the load and closing structure are arranged on one hinge, affecting the reliability of the structure. SUMMARY
[0006] The utility model aims to provide a kind of self-resetting assembly and industrial safety door, by using the structure, it can realize the large-angle opening and closing of safety door, self-closing stable and smooth, improve the reliability of industrial safety door, and the scope of application is wider, it is convenient to adjust.
[0007] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of: a self-resetting assembly, comprising a bracket, a connecting shaft, a connecting component and a spring, the middle part of the bracket is provided with an opening, the connecting shaft is installed in the opening, the connecting component and the spring are installed on the connecting shaft.
[0008] The connecting component includes a fixed part and a rotating part, the fixed part is installed on the connecting shaft, the rotating part is rotatably installed on the connecting shaft, and the rotating part is arranged between the spring and the fixed part, the two ends of the spring are respectively abutted on the inner wall of one side of the opening and the end face of the rotating part away from the fixed part.
[0009] The end face of the fixed part opposite to the side of the rotating part is provided with at least one guide groove, the rotating part is provided with a guide protrusion matched with the corresponding guide groove, the outer end face of the guide protrusion is pushed by the spring to be close to the inner end face of the guide groove, or the guide protrusion is abutted on the inner end face of the guide groove by the spring.
[0010] The guide grooves are arranged in a ring on the end face of the fixed part.
[0011] The inner end face of the guide groove comprises a first end face and a second end face, the inner end of the first end face is connected with the inner end of the second end face, the outer end of the first end face is connected with the end face of the fixed part, and the first end face is inclined from the inner end to the outer end and is arranged in the clockwise direction or the counterclockwise direction of the fixed part.
[0012] The first end face is an inclined surface or an arc surface.
[0013] The second end face is arranged in parallel with the axis of the fixed part, or the second end face is arranged to be inclined from the inner end to the outer end, and the inclination direction of the second end face is opposite to that of the first end face.
[0014] The inner end face of the guide groove is further provided with a connecting surface, and the two ends of the connecting surface are connected with the inner ends of the first end face and the second end face respectively.
[0015] The connecting surface is an arc surface.
[0016] The connecting surface is an arc surface.
[0017] The connecting surface is an arc surface.
[0018] The connecting surface is an arc surface.
[0019] The connecting surface is an arc surface.
[0020] The safe door is connected with the stand column through the self-resetting assembly and the load bearing component, the load bearing component mainly bears the safe door, the self-resetting assembly self-returns the safe door, the functions of bearing and self-closing are independent of each other, the reliability and safety of the structure can be effectively improved, meanwhile, the opening and closing angle of the self-resetting assembly is suitable for the opening and closing of the safe door with a large angle, and the self-returning of the safe door is stable and smooth.
[0021] And / or, the sub-frame is limited on the mother frame through the limiting piece.
[0022] Compared with the prior art, the utility model has the following advantages due to the above technical scheme:
[0023] 1. In the utility model, the rotating part and the fixed part are matched with each other, when the rotating part rotates around the connecting shaft, the rotating part is guided away from the fixed part through the guide groove and the guide convex part, and after the rotating part loses the external rotating driving force, the restoring force of the spring pushes the rotating part to move towards the fixed part, so that the rotating part automatically reverses and resets, compared with the structure adopting the torsional spring, the rotating part has a larger rotating angle, and the stability and smoothness of self-resetting are better.
[0024] 2. In the utility model, the safe door is connected with the stand column through the self-resetting assembly and the load bearing component, the load bearing component mainly bears the safe door, the self-resetting assembly self-returns the safe door, the functions of bearing and self-closing are independent of each other, the reliability and safety of the structure can be effectively improved, meanwhile, the opening and closing angle of the self-resetting assembly is suitable for the opening and closing of the safe door with a large angle, and the self-returning of the safe door is stable and smooth.
[0025] 3. In the utility model, the safe door is composed of the mother frame and the sub-frame, the sub-frame can be extended and retracted relative to the mother frame, so that the length direction of the safe door can be adjusted, the safe door is suitable for different opening widths, and the application range is wider. BRIEF DESCRIPTION OF DRAWINGS
[0026] Figure 1 It is a structure schematic view of the self-resetting assembly in the utility model embodiment one;
[0027] Figure 2 It is Figure 1 a three-dimensional structure schematic view;
[0028] Figure 3 It is a structure schematic view of the fixed part in the utility model embodiment one;
[0029] Figure 4 It is a structure schematic view of the rotating part in the utility model embodiment one;
[0030] Figure 5 It is a structure schematic view of the industrial safe door in the utility model embodiment one;
[0031] Figure 6 is a stereogram of the structure of Figure 5 ;
[0032] Figure 7 is a structure diagram of the self-resetting assembly and the lower connecting piece in the connected state in the first embodiment of the utility model;
[0033] Figure 8 is a structure diagram of the load-bearing component and the upper connecting piece in the connected state in the first embodiment of the utility model.
[0034] 1, stand; 2, safety door; 21, upper connecting piece; 22, lower connecting piece; 23, mother frame; 24, sub-frame; 25, limiting piece;
[0035] 3, self-resetting assembly; 31, bracket; 32, connecting shaft; 33, spring; 34, fixed part; 35,
[0036] rotating part; 36, limiting part; 340, guide groove; 341, lower guide protrusion; 350, guide protrusion; 351, upper guide groove; 3401, first end face; 3402, second end face; 3403, connecting face;
[0037] 4, load-bearing component; 41, second bracket; 42, second connecting shaft; 43, thrust bearing; 44, copper sleeve. DETAILED DESCRIPTION
[0038] The utility model will be further described in connection with the drawings and embodiments:
[0039] Embodiment one: referring to Figures 1-8 , a self-resetting assembly, including bracket 31, connecting shaft 32, connecting part and spring 33, the middle part of bracket 31 is equipped with an opening, connecting shaft 32 is installed in the opening, connecting part and spring 33 are installed on connecting shaft 32, and spring is sleeved on the outside of connecting shaft;
[0040] The connecting part includes fixed part 34 and rotating part 35, the fixed part 34 is installed on the connecting shaft 32, the rotating part 35 is rotatably installed on the connecting shaft 32, the rotating part 35 can rotate relative to the fixed part 34, and the rotating part 35 is arranged between the spring 33 and the fixed part 34, both ends of the spring 33 are respectively abutted on the end face of the rotating part 35 on the side wall of the opening and the side away from the fixed part 34; in the embodiment, both ends of the spring are respectively abutted on the top of the opening and the top surface of the rotating part.
[0041] The end face of the fixed part 34 opposite to the rotating part 35 is provided with at least one guide groove 340, and the rotating part 35 is provided with a guide convex part 350 matched with the guide groove 340.
[0042] The inner end face of the guide groove has a slope or an arc face, which is inclined to one direction (for example, to the clockwise direction or the counterclockwise direction), and the fixed part is arranged below the rotating part, the guide groove is at least two, and a plurality of guide grooves are arranged on the end face of the fixed part. In the embodiment, the guide groove is two, the guide convex part is also two, therefore, the two guide grooves form a lower guide convex part 341, and the two guide convex parts form two upper guide grooves 351, the lower guide convex part and the upper guide groove are matched, the guide convex part is matched with the guide groove, in the normal state, the guide convex part is completely inserted into the guide groove, and the lower guide convex part is also completely inserted into the upper guide groove, the outer end face of the corresponding guide convex part (that is, the bottom face of the corresponding guide convex part) is completely attached to the inner end face of the corresponding guide groove (that is, the bottom face of the corresponding guide groove), and the top face of the lower guide convex part is completely attached to the top face of the upper guide groove. When the rotating part is rotated around the connecting shaft to one side by an external force, because of the guide groove and the guide convex part, when the rotating part is rotated around the connecting shaft, the guide convex part and the guide groove are matched, the guide groove pushes the guide convex part away from the fixed part, that is, the rotating part moves upward, and the spring is compressed.
[0043] Referring to Figures 5-8 The utility model also provides an industrial safety door, including stand 1 and safety door 2, the first end of safety door 2 is connected with stand 1, still include above-mentioned self-resetting assembly 3 and at least one load bearing component 4, the support 31 of self-resetting assembly 3 and load bearing component 4 are connected with stand 1 respectively, the side portion of the first end of safety door 2 is rotatably connected with load bearing component 4, and the side portion of the first end of safety door 2 is also connected with rotating part 35.
[0044] Therefore, in the embodiment, the industrial safety door is connected with the reset assembly, the load-bearing component and the upright column, wherein the upright column serves as a door frame or a door column for mounting the industrial safety door, and the load-bearing component is mainly used for bearing the weight of the safety door and can provide stable support for the safety door, thereby dispersing the weight of the safety door and making the weight of the safety door be shared by the load-bearing component as much as possible, so as to reduce the pressure on the self-reset assembly as much as possible and prolong the service life of the self-reset assembly. The presence of the self-reset assembly enables the safety door to be self-closed after being opened. In the embodiment, two guide grooves and two guide convex parts are arranged, so that the opening angle of the door after being opened can be greater than 90 degrees, and the safety door can be automatically closed due to the presence of the spring, the guide grooves and the guide convex parts, and the spring pushes the rotating part to reset, so that the safety door is automatically closed, and the self-closing effect of the safety door is more smooth and stable under the action of the spring and the self-weight of the safety door.
[0045] Referring to Figures 1-4 As shown in the figure, the inner end surface of the guide groove 340 includes a first end surface 3401 and a second end surface 3402, the bottom of the first end surface 3401 is connected with the bottom of the second end surface 3402, the top of the first end surface 3401 is connected with the top surface of the fixed part 34, and the first end surface 3401 is arranged to be inclined toward the clockwise direction or the counterclockwise direction of the fixed part 34 from bottom to top.
[0046] The first end surface 3401 is a bevel or an arc surface. The second end surface 3402 is arranged to be parallel to the axis of the fixed part 34, or the second end surface 3402 is arranged to be inclined from the inner end to the outer end, and the inclination direction of the second end surface 3402 is opposite to that of the first end surface 3401.
[0047] In the embodiment, the first end surface is an arc surface arranged to be spirally arranged toward the clockwise direction from bottom to top, and the second end surface is arranged to be parallel to the axis of the fixed part.
[0048] Therefore, the first end face and the second end face are arranged, and the third end face and the fourth end face matched with the first end face and the second end face are arranged on the guiding convex part, when the safety door is opened, the guiding convex part rotates in the clockwise direction, the third end face of the guiding convex part contacts the first end face, and the third end face rotates in the clockwise direction, at this time, the fourth end face of the guiding convex part is away from the second end face of the guiding groove, because the first end face is an arc surface and is arranged to be inclined to the clockwise direction from bottom to top, therefore, the rotating part moves upwards and compresses the spring. When the safety door loses the external force for pushing the door outwards, because of the weight of the safety door and the pushing force of the spring, and because of the existence of the first end face and the inclined arrangement, the pushing force of the spring is added again to push the rotating part to move downwards, so that the rotating part moves downwards and reversely rotates, that is, the safety door reversely rotates and closes, until the fourth end face contacts the second end face, and then the reverse rotation of the rotating part is limited, so that the safety door is stably closed. In this way, the opening and closing angle of the safety door is large, and the safety door can be stably and smoothly closed.
[0049] As shown in Figure 3 、 4 The inner end face of the guiding groove 340 is further provided with a connecting face 3403, the two ends of the connecting face 3403 are connected with the inner ends of the first end face 3401 and the second end face 3402 respectively, and the connecting face is an arc surface.
[0050] The existence of the connecting face connects the first end face and the second end face, so that the end (bottom) of the guiding convex part is also an arc surface, thereby ensuring the smoothness and stability of the rotation of the rotating part relative to the fixed part and preventing the occurrence of the jamming phenomenon.
[0051] In the utility model, the structure of the fixed part and the rotating part is same, but the two are symmetrically arranged, so that the same part can be used for manufacturing, and the cost is lower, meanwhile, the fixed part is limited on the connecting shaft, and the circumferential rotation of the fixed part relative to the connecting shaft is prevented.
[0052] In the utility model, the connecting shaft 32 is further provided with a limiting part 36 for limiting the axial movement of the connecting shaft 32 relative to the support 31. The top of the connecting shaft is provided with a screw head, the limiting part is a nut, the outer surface below the connecting shaft is provided with external threads, the connecting shaft is inserted into the support, the top of the connecting shaft is limited by the screw head, the downward movement of the connecting shaft relative to the support is prevented, and the nut is screwed on the external threads below the connecting shaft, so that the cooperation of the limiting part and the screw head on the top of the connecting shaft limits the axial movement of the connecting shaft relative to the support. When the connecting shaft is disassembled, the nut is unscrewed, the connecting shaft can be moved upwards and separated from the support, and the disassembly of the connecting shaft is completed. When the connecting shaft is assembled, the bottom of the connecting shaft is inserted into the support, and the nut and the connecting shaft are screwed, so that the assembly of the connecting shaft is realized.
[0053] As shown in Figure 8As shown, the load-bearing component 4 comprises a second support 41, a second connecting shaft 42 and a thrust bearing 43, one side of the second support 41 is connected with the stand column 1, the other side of the second support 41 is provided with a second opening, the second connecting shaft 42 is installed in the second opening, the thrust bearing 43 is arranged on the second connecting shaft 42, the side of the first end of the safety door 2 is rotationally connected with the second connecting shaft 42, the safety door 2 can also axially move relative to the second connecting shaft 42, and the first end of the safety door 2 connected with the second connecting shaft 42 is arranged above the thrust bearing 43;
[0054] The second connecting shaft 42 and the first end of the safety door 2 are further provided with a copper sleeve 44.
[0055] In the embodiment, the load-bearing component is arranged above the self-resetting assembly, the first end of the safety door is provided with an upper connecting piece 21 and a lower connecting piece 22, the upper connecting piece is arranged above the lower connecting piece, the upper connecting piece is rotationally connected with the second connecting shaft and can axially move relative to the second connecting shaft, and the lower connecting piece is connected with the rotating part. The thrust bearing is installed on the second connecting shaft, the bottom of the thrust bearing abuts against the bottom surface of the second opening, the upper connecting piece is above the thrust bearing, the copper sleeve is between the second connecting shaft and the upper connecting piece, in the closed state of the safety door, the bottom of the upper connecting piece abuts against the top surface of the thrust bearing, in the opening process of the safety door, since the rotating part moves upward, the safety door and the upper connecting piece also move upward, the upper connecting piece is separated from the thrust bearing, since the safety door is mostly in the closed state, the thrust bearing plays a rolling support role when the safety door is opened and closed, compared with sliding contact, the smoothness in the opening and closing process of the safety door can be improved, the safety door is more labor-saving, and the wear between the safety door and the load-bearing component is reduced. Meanwhile, the copper sleeve is adopted, which has good compression resistance and can bear lateral force, can normally work under high load pressure, and has good wear resistance when the upper connecting piece rotates and axially moves relative to the second connecting shaft, the copper sleeve is not easy to be locked between the upper connecting piece and the second connecting shaft, and can maintain good performance in long-term and frequent use, especially in the case of no lubricant, the sliding property and self-lubricating function between the upper connecting piece and the second connecting shaft can be maintained, the stability and smoothness in the opening and closing process of the safety door are ensured.
[0056] Referring to Figure 5 , 6As shown, the safety door 2 comprises a mother frame 23 and a child frame 24, a first end of the mother frame 23 is connected with the stand column 1 through the self-resetting assembly 3 and the load-bearing component 4, a second end of the mother frame 23 is arranged away from the first end of the mother frame 23, one end of the child frame 24 is telescopically inserted into the second end of the mother frame 23, and the other end of the child frame 24 is arranged away from the second end of the mother frame 23; the child frame 24 is limited on the mother frame 23 through the limiting piece 25.
[0057] In the embodiment, in order to realize the length adjustment of the safety door, the safety door is provided as a mother frame and a child frame, the second end of the mother frame is provided with a socket matched with the child frame, the first end of the child frame is inserted into the socket, screw holes or through holes matched with each other are arranged on the child frame and the mother frame, a bolt or other fasteners are used to pass through the screw holes or through holes matched with each other on the child frame and the mother frame, and the child frame is limited on the mother frame.
[0058] In the embodiment, the length of the safety door can be adjusted, the adjustment is convenient, the installation is convenient and fast, the safety door can be quickly installed without too many complicated tools, the construction difficulty is low, and the maintenance cost is low.
[0059] In the description of the utility model, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.
[0060] In the utility model, unless another definite provision and limitation, the term " install", " link", " connect", " fixed" and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, for example, two through abutment, contact and so on form mechanical abutment or contact connection mode, two also can be directly hung or through intermediate medium hang up and so on, also can be two element internal communication or two element's interaction relationship. For ordinary skilled person in the art, the specific meaning of the above-mentioned term in the application can be understood according to the specific circumstances.
Claims
1. A self-resetting assembly, characterized by: The self-resetting assembly comprises a bracket, a connecting shaft, a connecting component and a spring, the bracket is provided with an opening in the middle, the connecting shaft is installed in the opening, the connecting component and the spring are installed on the connecting shaft; The connecting component comprises a fixed part and a rotating part, the fixed part is installed on the connecting shaft, the rotating part is rotatably installed on the connecting shaft, and the rotating part is arranged between the spring and the fixed part, the two ends of the spring are respectively abutted against the inner wall of one side of the opening and the end face of the rotating part away from the fixed part; The end face of the fixed part opposite to one side of the rotating part is provided with at least one guide groove, the rotating part is provided with a guide convex part matched with the guide groove, and the outer end face of the guide convex part is pushed by the spring to be close to or abut against the inner end face of the guide groove.
2. The self-resetting assembly of claim 1, wherein: The guide groove is at least two, and a plurality of guide grooves are arranged on the end face of the fixed part.
3. The self-resetting assembly of claim 1, wherein: The inner end face of the guide groove comprises a first end face and a second end face, the inner end of the first end face is connected with the inner end of the second end face, the outer end of the first end face is connected with the end face of the fixed part, and the first end face is inclined from the inner end to the outer end and arranged in the clockwise direction or the counterclockwise direction of the fixed part.
4. The self-resetting assembly of claim 3, wherein: The first end face is an inclined surface or an arc surface.
5. The self-resetting assembly of claim 3, wherein: The second end face is arranged in parallel with the axis of the fixed part, or the second end face is arranged to be inclined from the inner end to the outer end, and the inclination direction of the second end face is opposite to that of the first end face.
6. The self-resetting assembly of claim 3, wherein: The inner end face of the guide groove is further provided with a connecting surface, and the two ends of the connecting surface are respectively connected with the inner ends of the first end face and the second end face. The connecting surface is an arc surface.
7. The self-resetting assembly of claim 1, wherein: The connecting shaft is further provided with a limiting part for limiting the axial movement of the connecting shaft relative to the bracket.
8. An industrial safety gate comprising a post and a safety gate, the first end of the safety gate being connected to the post, characterised in that: The self-resetting assembly and at least one load-bearing component are further provided, the bracket of the self-resetting assembly and the load-bearing component are respectively connected with the stand column, the side of the first end of the safety door is rotatably connected with the load-bearing component, and the side of the first end of the safety door is further connected with the rotating part.
9. The industrial safety door of claim 8, wherein: The load-bearing component comprises a second bracket, a second connecting shaft and a thrust bearing, one side of the second bracket is connected with the stand column, the other side of the second bracket is provided with a second opening, the second connecting shaft is installed in the second opening, the thrust bearing is arranged on the second connecting shaft, the side of the first end of the safety door is rotatably connected with the second connecting shaft, and the first end of the safety door connected with the second connecting shaft is arranged above the thrust bearing. The second connecting shaft and the first end of the safety door are further provided with a copper sleeve.
10. The industrial safety door of claim 8, wherein: The safety door comprises a mother frame and a daughter frame, the first end of the mother frame is connected with the stand column through the self-resetting assembly and the load-bearing component, the second end of the mother frame is arranged away from the first end of the mother frame, one end of the daughter frame is telescopically inserted into the second end of the mother frame, and the other end of the daughter frame is arranged away from the second end of the mother frame. The daughter frame is limited in the mother frame by a limiting part.