Emergency clutch mechanism for sliding door opener

Abstract

The utility model discloses an emergency clutch mechanism of sliding door opener, including shell and base, is installed with motor on the base, and the rear end of base is fixed with rear cover, and the rear cover is equipped with the pivot, and the rear end of pivot is fixed with power gear, and the front end of pivot is equipped with the lock disc, and the lock disc is fixed with transmission worm wheel outward, and the lower end of motor is fixed with worm, and worm engages with transmission worm wheel, and the front end of pivot is equipped with movable rod, and the rear end of movable rod is pressed with the trapezoidal lock block, and the lock block passes through pivot and extends up and down, and the rear end of lock disc has the trapezoidal recess for the lock block to be clamped, and the first pin and second pin are fixed in the base, and the base contains the lever, and the right end of lever is rotatably connected with second pin, and the rear end middle part of lever leans against the front end of movable rod, and the front end of base has the through hole, and the through hole contains the emergency handle, and the left end of emergency handle is rotatably connected with first pin, and the left rear end of emergency handle leans against the left front end of lever. The utility model adopts the lever principle, and can play the role of saving the strength.

Description

Technical Field

[0001] This utility model relates to an emergency clutch mechanism for a sliding door opener. Background Technology

[0002] A sliding door opener is a device that automatically controls the opening and closing of a door. Its main component is a motor, which uses a gear set to transmit power to an external drive gear. This drive gear engages with a rack on the sliding door, thus enabling the door to move back and forth. This machine requires an emergency clutch mechanism to prevent the opener from seizing due to motor failure or damage to parts, which could hinder maintenance and the opening and closing of the sliding door.

[0003] The emergency clutch mechanism of conventional door openers has many flaws in its design. When the limit sensor malfunctions, or when the door is jammed against a pillar or collides with a hard object, the clutch engages very tightly, making it difficult to pry the handle out of the corresponding structure of the door opener. A significant amount of force is required to pry open the worm gear that meshes with the motor worm shaft. Given the inconvenience, crude design, and poor operability of the emergency clutch mechanism in door openers, a solution is needed to address these shortcomings. Utility Model Content

[0004] In view of the above-mentioned defects in the prior art, the purpose of this utility model is to provide an emergency clutch mechanism for a sliding door opener.

[0005] The technical solution of this utility model is: an emergency clutch mechanism for a sliding door opener, including a housing and a base. The base is fixed to the lower end of the housing, and a motor housed inside the housing is installed on the base. A rear cover is fixed to the rear end of the base, and a rotating shaft extending forward and backward passes through the rear cover. A power gear exposed outside the rear cover is fixedly connected to the rear end of the rotating shaft. A locking disc that slides forward and backward with the rotating shaft is fitted to the front end of the rotating shaft. A transmission worm gear is fixed outside the locking disc. A worm is fixed to the output shaft at the lower end of the motor, and the worm meshes with the transmission worm gear. A movable rod extending forward and backward passes through the front end of the rotating shaft, and a locking block is pressed at the rear end of the movable rod. The locking block extends vertically through the rotating shaft. The rear end of the locking disc has a groove for the locking block to be engaged. A first pin and a second pin extending vertically are fixed inside the base. A lever is placed inside the base. The right end of the lever is rotatably connected to the second pin. The middle of the rear end of the lever abuts against the front end of the movable rod. The front end of the base has a through hole, and an emergency handle is placed inside the through hole. The left end of the emergency handle is rotatably connected to the first pin, and the left rear end of the emergency handle abuts against the left front end of the lever.

[0006] Furthermore, the shaft has a through hole running vertically through the center, and the locking block extends vertically through the through hole and slides back and forth with the through hole.

[0007] Furthermore, the groove is a trapezoidal groove, the locking block is a trapezoidal locking block, and the rear end of the groove has an opening for the locking block to be engaged.

[0008] Furthermore, the pivot sleeve has gaskets and springs distributed front and back. The gaskets abut against the rear end face of the locking block, and the springs extend front and back and are locked between the back cover and the gaskets.

[0009] Furthermore, a bearing for contacting the lever is installed at the left rear end of the emergency handle.

[0010] Furthermore, a third pin extending vertically is fixed to the left end of the emergency handle, and the third pin passes through a bearing.

[0011] Furthermore, an arc-shaped protrusion is provided at the center of the front end of the lever, and an arc-shaped slot is provided on the left side of the emergency handle for the arc-shaped protrusion to be engaged.

[0012] Furthermore, a lock is installed on the right end of the emergency handle.

[0013] The emergency clutch mechanism of the sliding door opener provided by this utility model has the following advantages: When in use, after inserting the key into the lock to open the emergency handle, pulling the key forward moves the right end of the emergency handle forward. At this time, you can hold the right end of the emergency handle and turn it outward. The left end of the emergency handle will push the left end of the lever backward, and the lever will push the movable rod backward. The movable rod drives the lock block to move backward, so that the lock block is separated from the lock disc. At this time, the force of the transmission worm gear will not be transmitted to the rotating shaft. Because the lever principle is adopted, it can save effort. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a partial structural diagram of the present invention when the emergency handle is pulled open;

[0016] Figure 3 This is a schematic diagram of the structure of the present invention when the emergency handle is not pulled open after the outer shell is removed;

[0017] Figure 4 This is a schematic diagram of the structure of the emergency handle after the outer shell is removed and pulled open.

[0018] Figure 5 This is a schematic diagram of the emergency handle, lever, locking disc, and locking block of this utility model;

[0019] Figure 6 This is a schematic diagram of the installation of the lock according to this utility model.

[0020] In the diagram: 1—outer shell, 2—motor, 3—rear cover, 4—shaft, 41—through hole, 5—power gear, 6—lock disc, 61—groove, 7—transmission worm gear, 8—worm, 9—moving rod, 10—lock block, 11—first pin, 12—second pin, 13—lever, 131—arc-shaped protrusion, 14—base, 141—through hole, 142—locking hole, 15—emergency handle, 151—arc-shaped slot, 16—washer, 17—spring, 18—bearing, 19—third pin, 20—lock, 201—waist-shaped plate. Detailed Implementation

[0021] To provide a more intuitive and complete understanding of the technical solution of this utility model, the following non-limiting features are described in conjunction with the accompanying drawings:

[0022] like Figure 1 — Figure 5 As shown, an emergency clutch mechanism for a sliding door opener includes a housing 1 and a base 14. The base 14 is fixed to the lower end of the housing 1. A motor 2 housed within the housing 1 is mounted on the base 14. A rear cover 3 is fixed to the rear end of the base 14. A rotating shaft 4 extending forward and backward is threaded through the rear cover 3. A power gear 5 protruding outside the rear cover 3 is fixedly connected to the rear end of the rotating shaft 4. A locking disc 6, which slides forward and backward with the rotating shaft 4, is sleeved on the front end of the rotating shaft 4. A transmission worm gear 7 is fixed outside the locking disc 6. A worm 8 is fixed on the output shaft at the lower end of the motor 2. The worm 8 meshes with the transmission worm gear 7. A movable part extending forward and backward is threaded through the front end of the rotating shaft 4. A lever 9 has a locking block 10 pressed at its rear end. The locking block 10 extends vertically through the pivot 4. The rear end of the locking disc 6 has a groove 61 for the locking block 10 to be inserted. A first pin 11 and a second pin 12 extending vertically are fixed inside the base 14. A lever 13 is placed inside the base 14. The right end of the lever 13 is rotatably connected to the second pin 12. The middle of the rear end of the lever 13 abuts against the front end of the lever 9. The front end of the base 14 has a through hole 141. An emergency handle 15 is placed inside the through hole 141. The left end of the emergency handle 15 is rotatably connected to the first pin 11. The left rear end of the emergency handle 15 abuts against the left front end of the lever 13.

[0023] The rotating shaft 4 has a through hole 41 running vertically through its center. The locking block 10 extends vertically through the through hole 41 and slides back and forth with the through hole 41. The groove 61 is a trapezoidal groove 61, and the locking block 10 is a trapezoidal locking block 10, as shown below. Figure 5 As shown, the rear opening of the groove 61 allows the locking block 10 to engage. When the locking block 10 engages in the groove 61, the motor 2 starts, driving the worm gear 8 to rotate. The worm gear 8 drives the transmission worm wheel 7 to rotate, which in turn drives the locking disc 6 to rotate. The locking disc 6 then drives the locking block 10 to rotate, which in turn drives the rotating shaft 4 to rotate. When the locking block 10 is not engaged in the groove 61, the transmission worm wheel 7 will not drive the locking block 10 to rotate, and the rotating shaft 4 will not rotate.

[0024] like Figure 4 As shown, the pivot 4 is fitted with a front-to-back spacer 16 and a spring 17. The spacer 16 abuts against the rear end face of the locking block 10, and the spring 17 extends front-to-back and is engaged between the rear cover 3 and the spacer 16. When the emergency handle 15 is opened, the locking block 10 moves backward, and the spring 17 is compressed. When the emergency handle 15 is retracted, the spring 17 will drive the locking block 10, the movable rod 9, and the lever 13 to return to their original positions.

[0025] like Figure 3 As shown, a bearing 18 for contacting the lever 13 is installed at the left rear end of the emergency handle 15. Figure 5 As shown, a third pin 19 extending vertically is fixed to the left end of the emergency handle 15, and the third pin 19 passes through the bearing 18. The bearing 18 contacts the lever 13 with rolling friction, which can be used to reduce wear on the emergency handle 15.

[0026] like Figure 5 As shown, an arc-shaped protrusion 131 protrudes from the center of the front end of the lever 13, and an arc-shaped slot 151 is provided on the left side of the emergency handle 15 for the arc-shaped protrusion 131 to be engaged. When the arc-shaped protrusion 131 is engaged in the arc-shaped slot 151, the emergency handle 15 is in the fully open state.

[0027] like Figure 1 , Figure 6 As shown, a lock 20 is installed on the right end of the emergency handle 15. The rear end of the lock 20 has a waist-shaped plate 201, and the lower end of the through hole 141 has a locking hole 142 for the waist-shaped plate 201 to be inserted. When the key (not shown in the figure) is inserted into the lock 20 and the lock 20 is turned, the waist-shaped plate 201 rotates and moves out of the locking hole 142, at which time the emergency handle 15 can be opened.

[0028] When in use, insert the key into the lock 20 to open the emergency handle 15, then pull the key forward. The right end of the emergency handle 15 moves forward. At this time, you can hold the right end of the emergency handle 15 and turn it outward. The left end of the emergency handle 15 will push the left end of the lever 13 backward. The lever 13 will push the movable rod 9 backward. The movable rod 9 will drive the lock block 10 to move backward, so that the lock block 10 is separated from the lock disc 6. At this time, the force of the transmission worm gear 7 will not be transmitted to the rotating shaft 4. Because the lever 13 principle is used, it can save effort.

[0029] Of course, the above are only preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any simple modifications and equivalent structural changes made based on the contents of the present utility model specification and drawings should also be included within the patent protection scope of the present utility model.

Claims

1. An emergency clutch mechanism for a sliding door opener, comprising a housing and a base, the base being fixed to the lower end of the housing, a motor housed within the housing being mounted on the base, a rear cover being fixed to the rear end of the base, a rotating shaft extending forward and backward passing through the rear cover, and a power gear protruding outside the rear cover being fixedly connected to the rear end of the rotating shaft, characterized in that: A locking disc is fitted at the front end of the rotating shaft, which slides back and forth with the rotating shaft. A transmission worm gear is fixed outside the locking disc. A worm is fixed on the output shaft at the lower end of the motor. The worm meshes with the transmission worm gear. A movable rod extending back and forth passes through the front end of the rotating shaft. A locking block is pressed at the rear end of the movable rod. The locking block extends vertically through the rotating shaft. The rear end of the locking disc has a groove for the locking block to be engaged. A first pin and a second pin extending vertically are fixed inside the base. A lever is placed inside the base. The right end of the lever is rotatably connected to the second pin. The middle of the rear end of the lever abuts against the front end of the movable rod. The front end of the base has a through hole. An emergency handle is placed inside the through hole. The left end of the emergency handle is rotatably connected to the first pin. The left rear end of the emergency handle abuts against the left front end of the lever.

2. The emergency clutch mechanism of a sliding door opener according to claim 1, characterized in that: The shaft has a through hole running vertically through the middle, and the locking block extends vertically through the through hole and slides back and forth with the through hole.

3. The emergency clutch mechanism of a sliding door opener according to claim 1, characterized in that: The groove is trapezoidal, the locking block is trapezoidal, and the rear end of the groove is open for the locking block to be engaged.

4. The emergency clutch mechanism of a sliding door opener according to claim 1, characterized in that: The pivot sleeve has front and rear distributed gaskets and springs. The gaskets abut against the rear end face of the locking block, and the springs extend front and rear and are locked between the back cover and the gaskets.

5. The emergency clutch mechanism of a sliding door opener according to claim 1, characterized in that: A bearing for contacting the lever is installed at the left rear end of the emergency handle.

6. The emergency clutch mechanism of a sliding door opener according to claim 5, characterized in that: A third pin extending vertically is fixed to the left end of the emergency handle, and the third pin passes through a bearing.

7. The emergency clutch mechanism of a sliding door opener according to claim 1, characterized in that: An arc-shaped protrusion is provided at the center of the front end of the lever, and an arc-shaped slot is provided on the left side of the emergency handle for the arc-shaped protrusion to be engaged.

8. The emergency clutch mechanism of a sliding door opener according to claim 1, characterized in that: A lock is installed on the right end of the emergency handle.

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