Multi-mode automatic induction door closer
By designing a multi-mode automatic sensing door closer, and utilizing a resistive angle sensor and control mechanism, the problem of existing door closers being unable to automatically sense obstructions has been solved. This enables the door to stop closing immediately upon detecting an obstruction, thereby improving safety and avoiding the risk of pinching injuries.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-03-27
AI Technical Summary
Existing door closers lack automatic sensing capabilities, making it easy for users to be squeezed if they do not pass through the door in time, posing a risk of injury.
A multi-mode automatic sensor door closer was designed. By cooperating with the locking component and the sensing and detection component, a resistive angle sensor was used to detect the rotation angle of the rotating shaft and the push plate. Combined with the control mechanism and the motor, the position of the push plate was controlled to prevent the door from continuing to close.
It enables the door to stop closing immediately when an obstruction is detected, preventing users from being squeezed, improving safety, and avoiding pinching accidents.
Smart Images

Figure CN224048964U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of door closer, especially a kind of multi-mode automatic response door closer. BACKGROUND
[0002] Door closer is a kind of hydraulic device installed on the upper part of door leaf and door frame, through built-in spring mechanism or hydraulic system, after door opening, it can be self-compressed and release energy, automatically close door, ensure that door accurately and timely returns to initial position, enhance the protection of door and door frame, it is crucial in commercial and public buildings, for enhancing the security of building.
[0003] Current door closer is only pushed to door by spring mechanism or hydraulic system, after user opens door, door closer automatically pushes door to close, prevent door from being in open state, but existing door closer does not have automatic response mode and safety anti-pinch mode, user needs to use larger pushing force to make door open, and after door opening, if not passing in time, door will be extruded to user when closing, cause user to be pinched, not conducive to use.
[0004] Therefore, we provide a kind of multi-mode automatic response door closer to solve the problems in the above. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a kind of multi-mode automatic response door closer, through the cooperation of locking assembly and response detection assembly, solve the problem that existing technology's door closer does not have automatic response function, user is easily extruded to be injured after not passing through door in time.
[0006] To solve the above technical problems, the utility model is realized by the following technical schemes.
[0007] The utility model is a kind of multi-mode automatic response door closer, including shell, the top of the inner chamber of shell is movably connected with rotating shaft, the right side of rotating shaft is fixedly connected with push plate, the rear side of push plate is fixedly connected with adsorption mechanism, the left side of the inner chamber of shell is fixedly connected with locking assembly, the top of shell is fixedly connected with response detection assembly, the locking assembly includes gear, the inner wall of gear is fixedly connected with the surface of rotating shaft, the left side of the inner chamber of shell is fixedly connected with control shell, the inner chamber of control shell is provided with positioning mechanism, the rear side of the bottom of the inner chamber of shell is fixedly connected with control mechanism, the front side of control mechanism is penetrated to the inner chamber of control shell, the response detection assembly includes resistance type angle sensor, the detection end of the bottom of resistance type angle sensor is penetrated shell and is fixedly connected with rotating shaft, the bottom of shell is fixedly connected with first motor, the top of the output end of first motor is penetrated shell and is fixedly connected with rotating shaft.
[0008] The utility model further sets up, the adsorption mechanism includes sliding shell, the front side of sliding shell is fixedly connected with push board, the inner wall of sliding shell is fixedly connected with strong magnet, the top and bottom of sliding shell rear side all are provided with magnetic stripe, the rear side of magnetic stripe is provided with back glue, sliding shell can slide on the surface of magnetic stripe, prevent push board and door panel from wearing and tearing, strong magnet can cooperate with magnetic stripe and attract each other, be used to push board control door's opening and closing.
[0009] The utility model further sets up, the positioning mechanism includes push block, the right side of push block is fixedly connected with push rod, the surface of push rod is equipped with spring, the right side of push rod penetrates control shell and is fixedly connected with toothed plate, push block can control push rod and toothed plate to move after being extruded, toothed plate can engage with gear, thereby control push board fixed, make it unable continue to move, spring can make toothed plate reset when push block is not extruded.
[0010] The utility model further sets up, the control mechanism includes second motor, the bottom of second motor is fixedly connected with the inner wall of shell, the top of second motor output is fixedly connected with screw rod, the surface screw thread connection of screw rod has screw sleeve, the front side of screw sleeve is fixedly connected with pressing plate, the top of pressing plate penetrates to the inner chamber of control shell, second motor can cooperate with screw rod control screw sleeve moves, screw sleeve can control the use height of pressing plate, the extrusion of pressing plate to push block in the moving process in control shell makes it control the use position of toothed plate.
[0011] The utility model further sets up, the left side of screw sleeve is fixedly connected with positioning sleeve, the inner wall sliding connection of positioning sleeve has positioning strip, the left side of positioning strip is fixedly connected with the inner wall of shell, the top of screw rod is rotatably connected with the inner wall of shell through bearing, positioning sleeve and positioning strip are used for the positioning work of screw sleeve, make it will not appear autorotation in the moving process, improve its stability in the moving process, bearing can make screw rod rotate stably, prevent it from appearing swing in the rotation process.
[0012] The utility model further sets up, the top and bottom of the left side of rotating shaft all are fixedly connected with reset mechanism, the reset mechanism includes reset board, the right side of reset board is fixedly connected with rotating shaft, the front side of reset board and the inner wall of shell are fixedly connected with tension spring, reset board and tension spring make push board reset after changing use angle, thereby realize the effect of automatic closing door.
[0013] The utility model further sets up, the bottom of left side in the inner chamber of shell is fixedly connected with controller, the front side of shell is fixedly connected with control panel, controller can analyze the detection signal of resistance type angle sensor, adjust the use position of toothed plate according to the analysis result, control panel can control the switch of positioning mechanism actively for the user.
[0014] The utility model further sets up, the top and bottom of casing all are fixedly connected with mounting panel, the both sides of mounting panel rear side all are equipped with mounting hole, and mounting panel and mounting hole can conveniently install and fix the casing, can it can be stably installed in one side of door frame.
[0015] The utility model has the following beneficial effects.
[0016] 1, the utility model discloses a locking assembly, utilizes control mechanism to control the positioning mechanism movement, passes through the positioning mechanism and gear engagement, thereby realizes the positioning fixed of push plate, when needing to prevent the door to continue closing, can be positioned fixed to push plate, prevents its continuing drive door to close, forcibly interrupts the door closing action, prevents the door plate to pinch the user.
[0017] 2, the utility model discloses a sensing detection component, utilizes resistance type angle sensor to detect the rotation angle of rotating shaft and push plate, when detecting that rotating shaft and push plate suddenly stop in the rotation process, first motor starts immediately and controls push plate rotation, makes it no longer continue to extrude door plate, and positioning mechanism and gear cooperate and lock push plate, avoids extrusion injury to the user. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be to the embodiment description needed to use the drawing do simple introduction.
[0019] Figure 1 It is a kind of multi-mode automatic response door closer's perspective view;
[0020] Figure 2 It is a kind of multi-mode automatic response door closer's rear view;
[0021] Figure 3 It is a kind of multi-mode automatic response door closer in sliding shell section view;
[0022] Figure 4 It is a kind of multi-mode automatic response door closer in casing section view;
[0023] Figure 5 It is a kind of multi-mode automatic response door closer in control casing section view.
[0024] In the drawing: 1, shell; 2, rotating shaft; 3, push plate; 4, adsorption mechanism; 5, locking assembly; 51, gear; 52, control shell; 53, positioning mechanism; 54, control mechanism; 6, induction detection assembly; 61, resistance angle sensor; 62, first motor; 41, sliding shell; 42, strong magnet; 43, magnetic stripe; 531, push block; 532, push rod; 533, spring; 534, toothed plate; 541, second motor; 542, screw rod; 543, threaded sleeve; 544, pressing plate; 7, reset mechanism; 71, reset plate; 72, tension spring; 8, mounting plate. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the utility model will be described below with reference to the drawings in the embodiments of the utility model. The described embodiments are only part of the embodiments of the utility model, not all the embodiments.
[0026] Embodiment one
[0027] Please refer to Figures 1-5 The utility model discloses a kind of multi-mode automatic response door closer, including shell 1, the top of shell 1 inner cavity is movably connected with rotating shaft 2, the right side of rotating shaft 2 is fixedly connected with push plate 3, the rear side of push plate 3 is fixedly connected with adsorption mechanism 4, the left side of shell 1 inner cavity is fixedly connected with locking assembly 5, the top of shell 1 is fixedly connected with induction detection assembly 6, locking assembly 5 includes gear 51, the inner wall of gear 51 is fixedly connected with the surface of rotating shaft 2, the left side of shell 1 inner cavity is fixedly connected with control shell 52, the inner cavity of control shell 52 is provided with positioning mechanism 53, the rear side of shell 1 inner cavity bottom is fixedly connected with control mechanism 54, the front side of control mechanism 54 is penetrated to the inner cavity of control shell 52, induction detection assembly 6 includes resistance angle sensor 61, the detection end of resistance angle sensor 61 bottom is penetrated shell 1 and is fixedly connected with rotating shaft 2, the bottom of shell 1 is fixedly connected with first motor 62, the top of output end of first motor 62 is penetrated shell 1 and is fixedly connected with rotating shaft 2.
[0028] Specifically: rotating shaft 2 can facilitate the use of push plate 3, push plate 3 can be extruded to door plate in cooperation with reset mechanism 7, gear 51 can be positioned to push plate 3 in cooperation with positioning mechanism 53, control mechanism 54 is used for opening and closing positioning mechanism 53, resistance angle sensor 61 can detect the use angle of rotating shaft 2 and push plate 3, first motor 62 can control the use position of push plate 3, when extrusion occurs, can make first motor 62 reset and not extrude door plate again, prevent user from being extruded injury.
[0029] Embodiment two
[0030] Please refer to Figures 1-5On the basis of embodiment one, the adsorbing mechanism 4 comprises a sliding shell 41, the front side of the sliding shell 41 is fixedly connected with the push plate 3, the inner wall of the sliding shell 41 is fixedly connected with a strong magnet 42, the top and the bottom of the rear side of the sliding shell 41 are both provided with a magnetic stripe 43, the rear side of the magnetic stripe 43 is provided with a back glue, the positioning mechanism 53 comprises a push block 531, the right side of the push block 531 is fixedly connected with a push rod 532, the surface of the push rod 532 is sleeved with a spring 533, the right side of the push rod 532 penetrates through the control shell 52 and is fixedly connected with a toothed plate 534, the control mechanism 54 comprises a second motor 541, the bottom of the second motor 541 is fixedly connected with the inner wall of the shell body 1, the top of the output end of the second motor 541 is fixedly connected with a screw rod 542, the surface of the screw rod 542 is threadedly connected with a threaded sleeve 543, the front side of the threaded sleeve 543 is fixedly connected with a pressing plate 544, the top of the pressing plate 544 penetrates into the inner cavity of the control shell 52, the left side of the threaded sleeve 543 is fixedly connected with a positioning sleeve, the inner wall of the positioning sleeve is slidably connected with a positioning strip, the left side of the positioning strip is fixedly connected with the inner wall of the shell body 1, the top and the bottom of the left side of the rotating shaft 2 are both fixedly connected with the reset mechanism 7, the reset mechanism 7 comprises a reset plate 71, the right side of the reset plate 71 is fixedly connected with the rotating shaft 2, the front side of the reset plate 71 is fixedly connected with the inner wall of the shell body 1 through a tension spring 72, the bottom of the left side of the inner cavity of the shell body 1 is fixedly connected with a controller, the front side of the shell body 1 is fixedly connected with a control panel, the top and the bottom of the shell body 1 are both fixedly connected with the mounting plate 8, the rear side of the mounting plate 8 is provided with mounting holes on both sides.
[0031] Specifically: sliding shell 41 can slide on the surface of magnetic strip 43, prevent the push plate 3 and the door plate from being abraded, strong magnet 42 can cooperate with magnetic strip 43 and attract each other, for push plate 3 control door open and close, push block 531 can control push rod 532 and gear plate 534 to move after being extruded, gear plate 534 can be engaged with gear 51, thereby control push plate 3 fixed, it cannot continue to move, spring 533 can make gear plate 534 reset when push block 531 is not extruded, second motor 541 can cooperate with screw rod 542 and control threaded sleeve 543 to move, threaded sleeve 543 can control the use height of pressing plate 544, pressing plate 544 will extrude push block 531 in the control shell 52 during movement, make it control the use position of gear plate 534, positioning sleeve and positioning strip are used for the positioning work of threaded sleeve 543, so that it will not appear self-rotation during movement, improve its stability during movement, bearing can make screw rod 542 rotate stably, prevent it from swinging during rotation, reset plate 71 and tension spring 72 make push plate 3 reset after changing the use angle, so that the effect of automatic closing door is realized, controller can analyze the detection signal of resistance angle sensor 61, adjust the use position of gear plate 534 according to the analysis result, control panel can conveniently control the switch of positioning mechanism 53 by the user, mounting plate 8 and mounting hole can conveniently install and fix the shell 1, so that it can be stably installed on one side of the door frame.
[0032] The working principle of the utility model is: when the door is opened, the push plate 3 drives the rotating shaft 2 to rotate, the sliding shell 41 keeps the door body moving stably through the adsorption of strong magnet 42 and magnetic strip 43, the tension spring 72 of reset mechanism 7 is stretched and stored energy at this time, providing reset power for closing the door, the inductive detection assembly 6 monitors the rotating angle of rotating shaft 2 in real time through resistance angle sensor 61, and feeds back data to the controller, when the door body is closing and encounters resistance, such as human body obstruction, the rotating angle of rotating shaft 2 changes suddenly, resistance angle sensor 61 triggers a signal to the controller, the controller immediately starts first motor 62 to drive rotating shaft 2 in reverse, so that push plate 3 stops extruding the door body, at the same time, the controller starts control mechanism 54, so that second motor 541 drives screw rod 542 to rotate, thereby driving threaded sleeve 543 and pressing plate 544 to move downward, the pressing plate 544 extrudes push block 531 in control shell 52, after push block 531 is extruded, push rod 532 is pushed to make gear plate 534 engage with gear 51, forcibly lock rotating shaft 2 and push plate 3 to interrupt the closing action, when the obstacle is removed, the controller controls second motor 541 to reverse, the pressing plate 544 moves upward to release the extrusion of push block 531, spring 533 pushes gear plate 534 to disengage from gear 51, the tension spring 72 of reset mechanism 7 releases the stored energy, drives rotating shaft 2 and push plate 3 to reset, and the stable closing door is completed.
[0033] The preferred embodiments disclosed above are only used to help describe the utility model, the preferred embodiments do not describe all the details, and the utility model is not limited to the specific implementation mode described, the description selects and specifically describes these embodiments, in order to better explain the principle and practical application of the utility model, so that the skilled in the art can well understand and utilize the utility model.
Claims
1. A multi-mode automatic sensing door closer comprising a housing (1) characterised in that: The top of the shell (1) cavity is movably connected with a rotating shaft (2), the right side of the rotating shaft (2) is fixedly connected with a push plate (3), the rear side of the push plate (3) is fixedly connected with an adsorption mechanism (4), the left side of the shell (1) cavity is fixedly connected with a locking assembly (5), and the top of the shell (1) is fixedly connected with an induction detection assembly (6). The locking assembly (5) comprises a gear (51), the inner wall of the gear (51) is fixedly connected with the surface of the rotating shaft (2), the left side of the shell (1) cavity is fixedly connected with a control shell (52), the inner cavity of the control shell (52) is provided with a positioning mechanism (53), the rear side of the bottom of the shell (1) cavity is fixedly connected with a control mechanism (54), and the front side of the control mechanism (54) penetrates into the inner cavity of the control shell (52). The induction detection assembly (6) comprises a resistance angle sensor (61), the detection end of the bottom of the resistance angle sensor (61) penetrates the shell (1) and is fixedly connected with the rotating shaft (2), the bottom of the shell (1) is fixedly connected with a first motor (62), and the top of the output end of the first motor (62) penetrates the shell (1) and is fixedly connected with the rotating shaft (2).
2. A multi-mode automatic sensing door closer according to claim 1, wherein: The adsorption mechanism (4) comprises a sliding shell (41), the front side of the sliding shell (41) is fixedly connected with the push plate (3), the inner wall of the sliding shell (41) is fixedly connected with a strong magnet (42), the top and the bottom of the rear side of the sliding shell (41) are both provided with a magnetic stripe (43), and the rear side of the magnetic stripe (43) is provided with a back glue.
3. A multi-mode automatic sensing door closer according to claim 1, wherein: The positioning mechanism (53) comprises a push block (531), the right side of the push block (531) is fixedly connected with a push rod (532), the surface of the push rod (532) is sleeved with a spring (533), and the right side of the push rod (532) penetrates the control shell (52) and is fixedly connected with a toothed plate (534).
4. A multi-mode automatic sensing door closer according to claim 1, wherein: The control mechanism (54) comprises a second motor (541), the bottom of the second motor (541) is fixedly connected with the inner wall of the shell (1), the top of the output end of the second motor (541) is fixedly connected with a screw rod (542), the surface of the screw rod (542) is threadedly connected with a threaded sleeve (543), the front side of the threaded sleeve (543) is fixedly connected with a pressing plate (544), and the top of the pressing plate (544) penetrates into the inner cavity of the control shell (52).
5. A multi-mode automatic sensing door closer according to claim 4, wherein: The left side of the threaded sleeve (543) is fixedly connected with a positioning sleeve, the inner wall of the positioning sleeve is slidably connected with a positioning strip, the left side of the positioning strip is fixedly connected with the inner wall of the shell (1), and the top of the screw rod (542) is movably connected with the inner wall of the shell (1) through a bearing.
6. A multi-mode automatic sensing door closer according to claim 1, wherein: The top and the bottom of the left side of the rotating shaft (2) are both fixedly connected with a reset mechanism (7), the reset mechanism (7) comprises a reset plate (71), the right side of the reset plate (71) is fixedly connected with the rotating shaft (2), and the front side of the reset plate (71) and the inner wall of the shell (1) are fixedly connected with a tension spring (72).
7. A multi-mode automatic sensing door closer according to claim 1, wherein: The bottom of the left side of the inner cavity of the shell (1) is fixedly connected with a controller, and the front side of the shell (1) is fixedly connected with a control panel.
8. A multi-mode automatic sensing door closer according to claim 1, wherein: The top and the bottom of the shell (1) are fixedly connected with mounting plates (8), and the rear side of each of the two sides of the mounting plate (8) is provided with a mounting hole.