Clutch device of door opener

Abstract

The clutch device of the door opener comprises a main machine box, a clutch assembly and a rack, a driving assembly is fixedly installed in the main machine box, and an output shaft is arranged on one side of the driving assembly; the other end of the output shaft is installed in the driving assembly and sleeved with an inner output gear. An installation sliding groove is formed in the middle of the output shaft, a locking plate is installed in the installation sliding groove in a sliding mode, and a locking groove clamped with the locking plate is formed in a center shaft hole of the inner output gear. The clutch assembly comprises a fixing base fixed to one side of the mainframe box, a mounting groove is formed in one side of the fixing base, and a clutch switch is mounted at one end of the mounting groove through a shaft. According to the clutch device, under the emergency power-off working condition, the fatal potential safety hazard that a door body driven by a traditional worm and gear is locked and cannot be opened is effectively avoided, and when the door needs to be opened manually in emergencies such as fire disasters and first aid, the top shaft can be driven to move by operating the clutch switch, and the locking plate is driven to slide in the locking groove of the inner output gear for unlocking.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of door opening movement, more particularly relates to a clutch device of a door opening movement. BACKGROUND

[0002] In the field of translation door driving, in order to realize the automatic opening and closing of the door body, a door opening movement driven by a motor is often used. In order to prevent unauthorized personnel from manually pushing the door body to unlock or move the door body, a worm gear reduction motor is commonly used as the driving core in the prior art. The worm gear mechanism has the characteristics of reverse self-locking, which can effectively prevent the motor from being driven in reverse by external force (such as manual pushing), thereby ensuring the locking safety of the door body. However, this design relying on the self-locking characteristics of the worm gear has a significant defect: in the case of unexpected power failure and other emergency conditions, due to the inherent self-locking effect of the worm gear, the transmission system is locked, making it extremely difficult or even impossible to manually open the door body by human force. This defect is particularly prominent in the face of fire, medical emergency and other sudden emergencies that require rapid evacuation or passage, seriously hindering personnel escape or rescue, posing a major safety hazard, and failing to meet the safety redundancy requirements in emergency situations. Therefore, in view of the above, the existing structure and defects are studied and improved, and a clutch device of a door opening movement is provided to achieve a more practical and valuable purpose. SUMMARY

[0003] In order to solve the above technical problems, the present application provides a clutch device of a door opening movement, which is achieved by the following specific technical means:

[0004] A clutch device of a door opening movement, comprising a main box, a clutch assembly and a rack, the inside of the main box is fixedly installed with a driving assembly, one side of the driving assembly is provided with an output shaft, one end of the output shaft is fixedly sleeved with an outer output gear for engaging with the rack; the rack is fixedly installed on the door body, the other end of the output shaft is installed in the inside of the driving assembly and sleeved with an inner output gear; the middle part of the output shaft is provided with a mounting sliding groove, and the inside of the mounting sliding groove is slidably installed with a locking plate, the center shaft hole of the inner output gear is provided with a locking groove engaged with the locking plate; the clutch assembly comprises a fixed seat fixed to one side of the main box, one side of the fixed seat is provided with a mounting groove, one end of the mounting groove is rotatably installed with a clutch switch; one end of the output shaft is provided with a mounting hole, and the inside of the mounting hole is slidably installed with a jacking shaft, and one end of the jacking shaft is in contact with one side of the clutch switch; the other end of the jacking shaft is connected with the center of the locking plate.

[0005] Further, the driving assembly comprises a gear box and a driving motor, a transmission gear set is internally installed in the gear box, and the driving motor is in transmission connection with the inner output gear through the transmission gear set; one side of the gear box is connected with an end cover, and one side of the end cover is provided with a through hole for the top shaft to pass out.

[0006] Further, the transmission gear set comprises a worm, a rotating shaft one and a rotating shaft two which are rotatably installed in the interior of the gear box, a worm wheel and a gear one are fixedly sleeved on the outer side of the rotating shaft one, a gear two and a gear three are fixedly sleeved on the outer side of the rotating shaft two, the worm is in mesh with the worm wheel, the gear one is in mesh with the gear two, and the gear three is in mesh with the inner output gear, and the motor shaft of the driving motor is fixedly connected with one end of the worm in a same axis.

[0007] Further, one end of the clutch switch is provided with an arc-shaped extrusion surface, a guide groove is arranged in the center of the arc-shaped extrusion surface, one end of the guide groove is provided with a spherical groove, one end of the top shaft is provided in a semispherical shape and is slidingly installed in the guide groove.

[0008] Further, a spring is installed at the hole bottom of the mounting hole, the two ends of the spring are respectively abutted with the hole bottom of the mounting hole and the locking plate, the other end of the top shaft penetrates through the center of the locking plate and extends into the interior of the spring, and a limiting step is arranged on the outer side of the top shaft and the size of the limiting step is larger than the size of the center hole of the locking plate.

[0009] Further, a mechanical lock is fixedly installed at one end of the clutch switch, one end of the mechanical lock is provided with a lock tongue, and the fixed seat is provided with a lock groove corresponding to the lock tongue.

[0010] Compared with the prior art, the present application has the following beneficial effects:

[0011] 1. The clutch device of the present application effectively solves the fatal safety hazard that the traditional worm and gear driving door body is locked and cannot be opened in the emergency power-off working condition, when the door needs to be opened manually due to fire, first aid and other emergencies, the clutch switch is operated to drive the top shaft to move, the locking plate is slid in the locking groove of the inner output gear to be unlocked, and the torque transmission path between the inner output gear and the output shaft is directly interrupted, at this time, even if the worm and gear mechanism is still in the reverse self-locking state due to its inherent characteristics, but since the transmission chain is separated at the key node, the manual pushing force acting on the door body will not be restricted by the worm and gear self-locking, the door body can be easily manually translated and opened, which greatly improves the smoothness of the emergency evacuation and rescue channel, and meets the key safety redundancy requirement.

[0012] 2. The application effectively maintains and enhances the anti-theft locking function under normal power supply conditions, with convenient operation and high reliability. When the clutch switch is reset to the locking position, the top shaft is retracted under the action of the spring, pushing the locking plate to re-embed into the locking slot of the inner output gear, restoring the power transmission link of the worm gear to the output shaft. At this time, the inherent reverse self-locking feature of the worm gear is fully utilized, effectively resisting any unauthorized external force trying to move the door body in the reverse direction. In addition, the cooperation of the mechanical lock and the fixed seat lock slot provides double locking protection to prevent the clutch switch from being maliciously or accidentally triggered to unlock. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is the disassembly schematic diagram of the internal structure of the host box of the application.

[0014] Figure 2 is the disassembly schematic diagram of the clutch assembly of the application.

[0015] Figure 3 is the disassembly schematic diagram of the drive assembly of the application.

[0016] Figure 4 is the disassembly schematic diagram of the top shaft and the output shaft of the application.

[0017] Figure 5 is the partial structure cross-sectional view schematic diagram of the application.

[0018] Figure 6 is the schematic diagram of the application cooperating with the rack Figure 1 .

[0019] Figure 7 is the schematic diagram of the application cooperating with the rack Figure 2 .

[0020] Figure 8 is the installation and use schematic diagram of the application.

[0021] In the figure, the corresponding relationship between the component name and the figure number is:

[0022] 1, host box;

[0023] 2, clutch assembly; 201, fixed seat; 202, clutch switch; 203, mechanical lock; 204, lock tongue; 205, spherical groove; 206, top shaft;

[0024] 3, outer output gear;

[0025] 4, rack;

[0026] 5, drive assembly; 501, gear box; 502, end cover; 503, drive motor; 504, worm; 505, transmission gear set; 506, inner output gear; 507, output shaft; 508, locking plate; 509, spring; 5061, locking groove; 5071, mounting sliding groove. DETAILED DESCRIPTION

[0027] The embodiments of the present application will be further described in details with reference to the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0028] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element 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 addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] Embodiment:

[0031] As shown in the accompanying Figure 1 to the accompanying Figure 8 :

[0032] The application provides a clutch device of a door opener, which comprises a main box 1, a clutch assembly 2 and a rack 4, a driving assembly 5 is fixedly arranged in the main box 1, an output shaft 507 is arranged on one side of the driving assembly 5, an outer output gear 3 for engaging with the rack 4 is fixedly sleeved on one end of the output shaft 507, the rack 4 is fixedly arranged on a door body, the other end of the output shaft 507 is arranged in the driving assembly 5 and is sleeved with an inner output gear 506, a mounting sliding groove 5071 is arranged on the middle part of the output shaft 507, a locking plate 508 is slidably arranged in the mounting sliding groove 5071, a locking groove 5061 for engaging with the locking plate 508 is arranged on the central shaft hole of the inner output gear 506, the clutch assembly 2 comprises a fixed seat 201 fixedly arranged on one side of the main box 1, a mounting groove is arranged on one side of the fixed seat 201, a clutch switch 202 is arranged on one end of the mounting groove through a shaft, an installation hole is arranged on one end of the output shaft 507, a jacking shaft 206 is slidably arranged in the installation hole, one end of the jacking shaft 206 is in contact with one side of the clutch switch 202, and the other end of the jacking shaft 206 is connected with the center of the locking plate 508; the locking plate 508 is slid in the sliding groove 5071 of the output shaft 507 and is engaged with or separated from the locking groove 5061 of the inner output gear 506, so that the reliable connection or physical interruption of a power transmission path is realized, the structure provides a physical basis for manually unlocking the door body in the case of emergency power failure, and the stability of power transmission and the anti-theft safety in the case of normal driving are ensured.

[0033] The driving assembly 5 comprises a gear box 501 and a driving motor 503, transmission gears 505 are arranged in the gear box 501, the driving motor 503 is in transmission connection with the inner output gear 506 through the transmission gears 505, an end cover 502 is connected to one side of the gear box 501, a through hole is arranged on one side of the end cover 502 for the jacking shaft 206 to pass through, and a bearing and an oil seal are arranged in the through hole.

[0034] The transmission gears 505 comprise a worm 504, a rotating shaft one and a rotating shaft two which are rotatably arranged in the gear box 501, a worm wheel and a gear one are fixedly sleeved on the outer side of the rotating shaft one, a gear two and a gear three are fixedly sleeved on the outer side of the rotating shaft two, the worm 504 is in engagement with the worm wheel, the gear one is in engagement with the gear two, and the gear three is in engagement with the inner output gear 506, the motor shaft of the driving motor 503 is fixedly connected with one end of the worm 504 in a same axis, the engagement of the worm 504 and the worm wheel provides the inherent reverse self-locking characteristic of the transmission system, effectively prevents the unauthorized reverse driving of the motor, and ensures the anti-theft locking safety of the door body in the non-driving state. Meanwhile, the clutch is arranged after the worm wheel and the worm, i.e. at the inner output gear 506, when unlocking in an emergency, the connection between the inner output gear 506 and the output shaft 507 is only needed to be disconnected, so as to bypass the self-locking point of the worm wheel and the worm, and the door body can be manually pushed.

[0035] Wherein, one end of the clutch switch 202 is provided with an arc extrusion surface, and the center of the arc extrusion surface is provided with a guide groove, one end of the guide groove is provided with a spherical groove 205; one end of the top shaft 206 is provided with a hemispherical shape and is slidingly installed in the guide groove; the design of the arc extrusion surface, the guide groove and the spherical groove 205 cooperates with the hemispherical end of the top shaft 206, on the one hand, it can smoothly and low-resistance convert the rotary motion into the axial linear motion required by the top shaft 206 when operating the clutch switch 202, and the operation is labor-saving and smooth; on the other hand, the spherical groove 205 provides a precise positioning point for the hemispherical end of the top shaft 206 (especially in the "unlocked" position), which ensures that the locking plate 508 can completely separate from the locking groove 5061 to achieve complete separation, and the guide groove ensures the stability of the motion trajectory, avoiding the top shaft 206 from yawing or jamming.

[0036] Wherein, the bottom of the mounting hole is provided with a spring 509, and the two ends of the spring 509 are respectively abutted with the bottom of the mounting hole and the locking plate 508, the spring 509 continuously applies pressure to the locking plate 508, so that it has the tendency to embed into the locking groove 5061, which ensures that the locking plate 508 will automatically and reliably keep engaged with the locking groove 5061 when the clutch switch is not operated (under normal circumstances), ensuring the power transmission and anti-theft locking function; when the clutch switch 202 is operated to unlock, the top shaft 206 overcomes the elastic force of the spring 509 and pulls the locking plate 508 out of the locking groove 5061. The other end of the top shaft 206 penetrates from the center of the locking plate 508 and extends into the spring 509; the outside of the top shaft 206 is provided with a limiting step, and the size of the limiting step is greater than the size of the center hole of the locking plate 508.

[0037] Wherein, one end of the clutch switch 202 is fixedly provided with a mechanical lock 203, one end of the mechanical lock 203 is provided with a lock tongue 204; the fixed seat 201 is provided with a lock groove corresponding to the lock tongue 204; the mechanical lock 203 and the lock tongue 204 cooperate with the lock groove on the fixed seat 201 to provide physical control of the operation permission of the clutch switch 202. In the case where there is no need for emergency manual door opening, the lock tongue 204 can be inserted into the lock groove by operating the mechanical lock 203 with a key, and the clutch switch 202 is locked in the "locked" position. This effectively prevents the clutch switch 202 from being misoperated or maliciously unlocked by unauthorized personnel, ensuring the anti-theft locking safety of the door body under non-emergency conditions. Only when the authorized personnel use the key to unlock the mechanical lock 203, can the clutch switch 202 be operated for emergency unlocking, realizing the balanced management of safety and emergency.

[0038] The working principle of the embodiment is as follows: when normal power supply, the driving motor 503 drives the worm gear 504 to drive the worm wheel, and then drives the inner output gear 506 to rotate through the transmission gear set 505; at this time, under the action of the spring 509, the locking plate 508 is embedded in the locking groove 5061 of the inner output gear 506, the torque is transmitted to the output shaft 507, and then the outer output gear 3 is driven to engage with the rack 4 fixed to the door body, the automatic opening and closing of the door body is realized, and the reverse self-locking characteristic of the worm and gear mechanism effectively prevents the door body from being pushed in the reverse direction by external force; when an emergency such as power failure occurs, the mechanical lock 203 is first unlocked, and then the clutch switch 202 is operated, the arc-shaped pressing surface of the clutch switch 202 pushes the top shaft 206 to overcome the elastic force of the spring 509 and moves axially, drives the locking plate 508 to slide in the mounting sliding groove 5071 of the output shaft 507, so that it is separated from the locking groove 5061 of the inner output gear 506, and the torque transmission link between the inner output gear 506 and the output shaft 507 is physically interrupted; at this time, even if the worm and gear is still in the self-locking state, the manual pushing force acting on the door body through the rack 4 and the outer output gear 3 can directly drive the output shaft 507 to rotate freely, and the door body can be easily manually translated and opened; after closing the clutch switch 202, the spring 509 pushes the locking plate 508 to reset and re-embed in the locking groove 5061, and the power transmission and self-locking anti-theft function is restored.

[0039] Embodiments of the present application are presented for the purpose of example and description, and are not exhaustive or limit the present application to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical application of the present application, and to enable those of ordinary skill in the art to understand the present application so as to design various embodiments with various modifications suitable for specific purposes.

Claims

1. A clutch device of a door opener, comprising a main box (1), a clutch assembly (2) and a rack (4), a driving assembly (5) is fixedly installed in the inside of the main box (1), one side of the driving assembly (5) is provided with an output shaft (507), one end of the output shaft (507) is fixedly sleeved with an outer output gear (3) for engaging with the rack (4); the rack (4) is fixedly installed on a door body, characterized in that: The other end of the output shaft (507) is mounted in the interior of the driving assembly (5) and is sleeved with an inner output gear (506); the middle part of the output shaft (507) is provided with a mounting sliding groove (5071), and the interior of the mounting sliding groove (5071) is slidably mounted with a locking plate (508); the central shaft hole of the inner output gear (506) is provided with a locking groove (5061) engaged with the locking plate (508); the clutch assembly (2) comprises a fixing seat (201) fixed to one side of the main cabinet (1), one side of the fixing seat (201) is provided with a mounting groove, and one end of the mounting groove is mounted with a clutch switch (202) through a shaft; one end of the output shaft (507) is provided with a mounting hole, and a top shaft (206) is slidably mounted in the interior of the mounting hole, and one end of the top shaft (206) is in contact connection with one side of the clutch switch (202); the other end of the top shaft (206) is connected with the center of the locking plate (508).

2. The clutch apparatus of claim 1, wherein: The driving assembly (5) comprises a gear box (501) and a driving motor (503), the interior of the gear box (501) is mounted with a transmission gear set (505), and the driving motor (503) is in driving connection with the inner output gear (506) through the transmission gear set (505); one side of the gear box (501) is connected with an end cover (502), and one side of the end cover (502) is provided with a through hole for the top shaft (206) to pass out.

3. The clutch apparatus of claim 2, wherein: The transmission gear set (505) comprises a worm (504), a rotating shaft one and a rotating shaft two which are rotatably mounted in the interior of the gear box (501), the outer side of the rotating shaft one is fixedly sleeved with a worm wheel and a gear one; the outer side of the rotating shaft two is fixedly sleeved with a gear two and a gear three; the worm (504) is in engagement with the worm wheel, the gear one is in engagement with the gear two, and the gear three is in engagement with the inner output gear (506); the motor shaft of the driving motor (503) is fixedly connected with one end of the worm (504) in a same axis.

4. The clutch apparatus of claim 1, wherein: One end of the clutch switch (202) is provided with an arc-shaped extrusion surface, the center of the arc-shaped extrusion surface is provided with a guide groove, one end of the guide groove is provided with a spherical groove (205); one end of the top shaft (206) is provided in a semispherical shape and is slidably mounted in the guide groove.

5. The clutch apparatus of claim 1, wherein: The bottom of the mounting hole is mounted with a spring (509), the two ends of the spring (509) are respectively abutted with the bottom of the mounting hole and the locking plate (508); the other end of the top shaft (206) penetrates through the center of the locking plate (508) and extends into the interior of the spring (509); the outer side of the top shaft (206) is provided with a limiting step, and the size of the limiting step is greater than the size of the central hole of the locking plate (508).

6. The clutch apparatus of claim 1, wherein: One end of the clutch switch (202) is fixedly mounted with a mechanical lock (203), one end of the mechanical lock (203) is provided with a lock tongue (204); the fixing seat (201) is provided with a lock groove corresponding to the lock tongue (204).

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