An electric pulley

Abstract

The present invention is applicable to the technical field of door and window accessories, and provides an electric pulley, including a main housing, a lifting wheel frame connected to the main housing and capable of lifting and lowering relative to the main housing, and a pulley connected to the lifting wheel frame, wherein a clutch component is arranged in the main housing, and the lifting wheel frame is connected to a power component for driving the clutch component to move and the pulley to rotate, wherein the power component includes a transmission gear set and a power motor; the clutch component includes a lifting rack that can mesh with the transmission gear set and is driven to slide by the transmission gear set, a rack clutch block driven by the lifting rack, an active inclined block that can be driven by the rack clutch block and can drive the lifting wheel frame to lift and lower, and a passive inclined block connected to the main housing, wherein a lifting guide structure is arranged between the active inclined block and the passive inclined block. The electric pulley provided by the present invention has a good user experience.

Description

Technical Field

[0001] The invention belongs to the technical field of door and window accessories, and in particular relates to an electric pulley. Background Art

[0002] The current mainstream electric sliding doors are complex to install, and the electric pulley structure protrudes beyond the frame and sash. If a program failure or power outage occurs, the electric pulley will get stuck, resulting in a poor user experience. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide an electric pulley with good user experience.

[0004] The technical solution of the present invention is: an electric pulley, comprising a main housing, a lifting wheel frame connected to the main housing and capable of being lifted and lowered relative to the main housing, and a pulley connected to the lifting wheel frame, a clutch component is arranged in the main housing, the lifting wheel frame is connected to a power component for driving the clutch component to move and the pulley to rotate, the power component comprises a transmission gear set and a power motor; the clutch component comprises a lifting rack that can be meshed with the transmission gear set and driven to slide by the transmission gear set, a rack clutch block driven by the lifting rack, an active inclined block that can be driven by the rack clutch block and can drive the lifting wheel frame to lift and lower, and a passive inclined block connected to the main housing, a lifting guide structure is arranged between the active inclined block and the passive inclined block.

[0005] Specifically, the transmission gear set includes a driving gear driven by the power motor and a driven gear set that can planetarily rotate relative to the driving gear; the driven gear set is meshed with the driving gear, and the lifting rack is meshed with the driven gear set.

[0006] Specifically, a tilting block is integrally formed at the upper end of the lifting rack, and the rack clutch block is provided with a tilting hole for matching with the tilting block; and a tilting support block is also provided at the upper end of the tilting block, one side of which can abut against the tilting hole.

[0007] Specifically, guide columns are arranged on both sides of the lifting rack, the active inclined block is provided with a longitudinal connecting slide groove for the guide columns to extend into and slide up and down, and the active inclined block is slidably connected to the lifting wheel frame.

[0008] Specifically, the passive bevel block is connected to the main shell, and a lifting guide bevel is provided at the front end of the passive bevel block, and a pre-stressed force storage elastic member is provided at the rear end of the passive bevel block; the active bevel block is connected to a locking pin, and the active bevel block presses forward against the passive bevel block, and the active bevel block moves downward and can further compress the force storage elastic member to store energy of the force storage elastic member; when the force storage elastic member releases its elasticity and pushes the passive bevel block backward, it drives the locking pin backward and locks the lifting rack out of engagement with the transmission gear set; when unlocking, after the unlocking block pushes the locking pin to unlock, the force storage elastic member pushes the passive module, the active bevel block, the lifting rack, the rack clutch block and the locking pin backward, so that the lifting rack re-engages with the transmission gear set.

[0009] Specifically, the active inclined block is connected with a locking shaft, and the lifting wheel frame has a locking groove for the locking shaft to be locked in; the locking groove includes a rising groove and a stop groove connected to the upper part of the rising groove.

[0010] Specifically, the lifting wheel frame has a stop surface for stopping the rack clutch block, and the front inclined surface of the inclined block in the lifting rack acts on the front inclined surface of the inclined hole in the rack clutch block, so that the lifting rack moves upward and disengages from the driven gear set.

[0011] Specifically, the power motor is connected with a spur gear, and the spur gear is connected with a worm gear; the driven gear set includes a first helical gear, a second helical gear and a third helical gear, and the pulley is provided with two groups, and the two groups of pulleys are respectively connected to the first gear and the second gear; the first helical gear is meshed with the worm gear, and the second helical gear is meshed with the first helical gear; the first gear is meshed between the second helical gear and the third helical gear, and the second gear is meshed with the third helical gear, the first gear, the second gear, the second helical gear and the third helical gear are connected to the lifting wheel frame, the first helical gear is connected to the main housing, and the first helical gear and the second helical gear are rotationally connected through a connecting piece;

[0012] The power motor is a brushless motor, a motor fixing flange is arranged in the main housing, the worm gear is coaxially connected with a first spur gear, the rotating shaft of the brushless motor is connected with a second spur gear, and the first spur gear is meshed with the second spur gear.

[0013] Specifically, the electric pulley also includes an unlocking component, which includes an electromagnetic component and an unlocking block driven by the electromagnetic component, and the unlocking block is provided with an unlocking inclined surface for driving the locking shaft to withdraw from the stop groove and slide at the bottom of the rising groove.

[0014] Specifically, the lifting guide structure includes a first inclined surface arranged at the front end of the active inclined block and arranged obliquely upward, and a second inclined surface arranged at the front end of the passive inclined block and arranged obliquely downward.

[0015] The electric pulley provided by the present invention cooperates with the lifting guide structure, and only one power component is needed to drive the pulley to rotate and lift, the electric pulley will not get stuck, and the user experience is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 is a three-dimensional schematic diagram of an electric pulley provided by an embodiment of the present invention;

[0018] Figure 2 is a plan view of an electric pulley provided by an embodiment of the present invention;

[0019] Figure 3 is a three-dimensional exploded schematic diagram of an electric pulley provided by an embodiment of the present invention;

[0020] Figure 4 is a cross-sectional schematic diagram of a rack clutch block in an electric pulley provided by an embodiment of the present invention;

[0021] Figure 5 It is a three-dimensional schematic diagram of a rack clutch block in an electric pulley provided by an embodiment of the present invention;

[0022] Figure 6 It is a three-dimensional schematic diagram of a lifting rack in an electric pulley provided by an embodiment of the present invention;

[0023] Figure 7 is a cross-sectional schematic diagram of a lifting wheel frame in an electric pulley provided by an embodiment of the present invention;

[0024] Figure 8 It is a schematic plan view of a lifting wheel frame in an electric pulley provided by an embodiment of the present invention;

[0025] Fig. 9 is a plan view of an electric pulley provided by an embodiment of the present invention;

[0026] Fig.10 is a cross-sectional schematic diagram of an electric pulley provided by an embodiment of the present invention;

[0027] Fig.11is a cross-sectional schematic diagram of an electric pulley provided by an embodiment of the present invention;

[0028] Fig.12 is a cross-sectional schematic diagram of an electric pulley provided by an embodiment of the present invention;

[0029] Fig.13 is a cross-sectional schematic diagram of an electric pulley provided by an embodiment of the present invention;

[0030] Fig.14 It is a three-dimensional schematic diagram of an active inclined block and a passive inclined block in an electric pulley provided by an embodiment of the present invention;

[0031] Fig.15 It is a plan view of a power component and a transmission gear set in an electric pulley provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] like Figures 1 to 15 As shown, an electric pulley provided by an embodiment of the present invention comprises a main housing 1, a lifting wheel frame 2 connected to the main housing 1 and capable of being lifted and lowered relative to the main housing 1, and a pulley 3 connected to the lifting wheel frame 2, a clutch component is arranged in the main housing 1, the lifting wheel frame 2 is connected to a power component for driving the clutch component to move and the pulley 3 to rotate, the power component comprises a transmission gear set and a power motor 4; the clutch component comprises a lifting rack 5 which can be meshed with the transmission gear set and driven to slide by the transmission gear set, a rack clutch block 6 driven by the lifting rack 5, an active inclined block 7 which can be driven by the rack clutch block 6 and can drive the lifting wheel frame 2 to lift and lower, and a passive inclined block 8 connected to the main housing 1, a lifting guide structure is arranged between the active inclined block 7 and the passive inclined block 8, by arranging the lifting wheel frame 2 which can be lifted and lowered and the clutch component, in cooperation with the lifting guide structure, only one power component is required to drive the pulley 3 to rotate and lift, the electric pulley will not be stuck, and the user experience is good.

[0034] Specifically, the transmission gear set includes a driving gear driven by the power motor 4 and a driven gear set that can rotate planetarily relative to the driving gear; the driven gear set is meshed with the driving gear, and the lifting rack 5 is meshed with the driven gear set, that is, the driven gear set can rotate planetarily around the driving gear, the pulley 3 can adapt to the track, and the lifting wheel frame 2 can be raised (manual mode) and lowered (electric mode) without the need to set up a special motor.

[0035] Specifically, the upper end of the lifting rack 5 is integrally formed with an inclined block 51, and the inclined block 51 may be provided with one, two or more. In the present embodiment, two inclined blocks 51 are provided, and the inclined blocks 51 are inclined toward the front end of the lifting rack 5. The rack clutch block 6 is provided with an inclined hole 61 for matching with the inclined block 51, and the inclined hole 61 matches with the inclined block 51. The inclined hole 61 has a front inner wall 611 (close to the front end of the rack clutch block 6) and a rear inner wall 612. The front end of the active inclined block 7 and the front end of the passive inclined block 8 can be arranged facing each other.

[0036] Specifically, the upper end of the tilting block 51 is further provided with a tilting support block 52 whose one side can be against the tilting hole 61 , and the tilting support block 52 can be stuck on the rear inner wall 612 of the tilting hole 61 .

[0037] Specifically, guide posts 53 are provided on both sides of the lifting rack 5 , and the active inclined block 7 is provided with a longitudinal connecting slide groove 71 for the guide posts 53 to extend into and slide up and down, and the active inclined block 7 is slidably connected to the lifting wheel frame 2 .

[0038] Specifically, the passive bevel block 8 is connected to the main shell 1, and a lifting guide bevel is provided at the front end of the passive bevel block 8, and a pre-stressed force storage elastic member is provided at the rear end of the passive bevel block 8, that is, the force storage elastic member always maintains elastic force, so the passive bevel block 8 always has a reverse thrust, and the force storage elastic member can be a pre-stressed spring 81. By providing the force storage elastic member, the pulley 3 can adapt to the ups and downs of the track. The active bevel block 7 is connected with a locking pin, and the active bevel block 7 pushes forward against the passive bevel block 8. The active bevel block 8 moves downward and can further compress the force storage elastic member (spring 81) to store energy for the force storage elastic member; when the force storage elastic member releases its elasticity and pushes the passive bevel block 8 backward, it drives the locking pin backward and locks the lifting rack 5 out of engagement with the transmission gear set; when unlocking, after the unlocking block pushes the locking pin to unlock, the force storage elastic member pushes the passive module 8, the active bevel block 7, the lifting rack 5, the rack clutch block 6 and the locking pin backward, so that the lifting rack 5 re-engages with the transmission gear set, thereby realizing the repeatability of the entire set of engagement / disassembly and the motion closed loop.

[0039] Specifically, the active inclined block 7 is connected with a stop shaft 91, and the lifting wheel frame 2 has a locking groove for the stop shaft 91 to be locked in; the locking groove includes a rising groove and a stop groove connected to the upper part of the rising groove.

[0040] Specifically, the lifting wheel frame 2 has a stop surface for stopping the rack clutch block 6, and the front inclined surface of the inclined block 51 in the lifting rack 5 acts on the front inclined surface of the inclined hole 61 in the rack clutch block 6, so that the lifting rack 5 moves upward and disengages from the driven gear set.

[0041] Specifically, the power motor 4 is connected to a spur gear 41, and the spur gear 41 is connected to a worm gear 42; the driven gear group includes a first bevel gear 43, a second bevel gear 44 and a third bevel gear 45, and the pulley 3 is provided with two groups, and the two groups of pulleys are respectively connected to the first gear 46 and the second gear 47; the first bevel gear 43 is meshed with the worm gear 42, and the second bevel gear 44 is meshed with the first bevel gear 43; the first gear 46 is meshed between the second bevel gear 44 and the third bevel gear 45, and the second gear 47 is meshed with the third bevel gear 45. The third bevel gear 45, the first gear 46, the second gear 47, the second bevel gear 44 and the third bevel gear 45 are connected to the lifting wheel frame 2, the first bevel gear 43 is connected to the main housing 1, and the first bevel gear 43 and the second bevel gear 44 are rotatably connected via a connecting piece 48; the power motor 4 is a brushless motor, a motor fixing flange 49 is provided in the main housing 1, the worm gear 42 is coaxially connected to the first spur gear, the rotating shaft of the brushless motor is connected to the second spur gear, and the first spur gear is meshed with the second spur gear.

[0042] Specifically, the active bevel block 7 may be connected with a locking pin, which may be used to limit the rack clutch block 6 . The active bevel block 7 may be provided with an inverted “L”-shaped stop groove, in which the locking pin may be stuck and located under the rack clutch block 6 .

[0043] Specifically, the electric pulley also includes an unlocking component, which includes an electromagnetic component 31 and an unlocking block 32 driven by the electromagnetic component 31, and the unlocking block 32 is provided with an unlocking inclined surface for driving the stop shaft 91 to withdraw from the stop groove and slide on the bottom of the rising groove. The electromagnetic component 31 can be an electromagnetic push rod. The unlocking block 32 has an unlocking inclined surface for squeezing the locking pin to move downward when moving forward. In specific applications, the electromagnetic push rod and the unlocking block 32 can be arranged at the rear end of the main housing 1. The lifting rack 5 can be arranged below the rack clutch block 6, and the rack clutch block 6 can be slidably connected to the active bevel block 7. The lifting rack 5 can be located above the third bevel gear 45.

[0044] Specifically, a transverse slide rail structure may be provided between the passive inclined block 8 and the main housing 1 , a transverse sliding structure may be provided between the active inclined block 7 and the rack clutch block 6 , and a longitudinal sliding structure may be provided between the lifting rack 5 and the active inclined block 7 .

[0045] Specifically, the lifting guide structure includes a first inclined surface arranged at the front end of the active inclined block 7 and arranged obliquely upward, and a second inclined surface arranged at the front end of the passive inclined block 8 and arranged obliquely downward.

[0046] Specifically, a bottom sealing plate 11 may be connected to the bottom of the main housing 1 .

[0047] In specific applications, the steps for electric pulley landing and electric drive can be referred to as follows:

[0048] The power motor 4 rotates to drive the first bevel gear 43 to rotate (as shown in the figure, the first bevel gear 43 rotates counterclockwise), thereby driving the lifting rack 5 to move forward (i.e., to the right in the figure). At this time, the bottom surface of the rack clutch block 6 contacts the top surface of the inclined block 51 on the lifting rack 5, so that the lifting rack 5 remains meshed with the third bevel gear 45, and the guide column 53 of the lifting rack 5 drives the active bevel block 7 and the rack clutch block 6 to move rightward (forward) together. During the movement, the active bevel block 7 is squeezed with the passive bevel block 8. Under the constraint of the lifting guide structure, when the active bevel block 7 abuts against the passive bevel block 8 and continues to move to the right, the active bevel block 7 moves downward under the action of the lifting guide structure, so that the active bevel block 7 and the lifting wheel frame 2 move downward together, driving the pulley 3 (PU wheel) to contact the track, and the excess stroke squeezes and accumulates force for the spring 81 behind the passive bevel block 8. During this movement, the lock pin is dragged by the active bevel block 7 to move upward under the action of the inclined surface of the lifting wheel frame 2. When the active bevel block 7 continues to move, the front stop surface (which may be the front end surface 601) of the rack clutch block 6 contacts the front stop surface (201) of the lifting wheel frame 2, so that the rack clutch block 6, the active bevel block 7 and the lifting rack 5 generate relative movement, and the front inner wall 611 (bevel) of the inclined hole 61 on the rack clutch block 6 and the front end bevel (bevel 501) of the inclined block 51 on the lifting rack 5 act to move the lifting rack 5 upward, and the lifting rack 5 can be disengaged from the third bevel gear 45. After disengagement, the active bevel block 7, the lifting rack 5, the rack clutch block 6 and the lock pin quickly retreat (to the left) under the action of the spring 81 behind the passive bevel block 8, and the lock pin is stopped by the rear end surface (202) of the stop groove of the lifting wheel frame 2. Then the lifting rack 5 and the third bevel gear 45 are kept out of meshing state, and the pulley 3 is kept on the track, and the spring 81 is kept in the power storage state, so that the pulley 3 has the ability to adapt to the ups and downs of the track, and it can be switched to the electric mode at this time.

[0049] In specific applications, the steps for electric pulley derailment and manual mode can be referred to as follows:

[0050] After the motor stops rotating, the electromagnetic member 31 (electromagnetic push rod) of the unlocking component drives the unlocking block 32 to move forward (to the right) under the command, and the unlocking inclined surface of the unlocking block 32 squeezes the lock pin, so that the lock pin moves downward, and the lock pin is separated from the rear end surface (203) of the stop groove of the lifting wheel frame 2. Under the action of the spring 81, the active inclined block 7, the lifting rack 5, the rack clutch block 6, and the lock pin retreat, and the rear stop surface (for example, the tail end surface, 602) of the rack clutch block 6 collides with the rear stop surface (202) of the lifting wheel frame 2, and the rack clutch block 6 is prevented from retreating. When the lifting rack 5 continues to retreat, the rear side inner wall 612 of the rack clutch block 6 squeezes the rear end inclined surface ( 502), the lifting rack 5 is lowered, and a certain meshing pressure is maintained under the action of the spring 81. Under the drive of the brushless motor, the first bevel gear 43 is reversed, the third bevel gear 45 is meshed with the lifting rack 5 and drives the lifting rack 5, the active bevel block 7 and the lock pin to move leftward, the spring 81 of the passive bevel block 8 is released, and the lifting rack 5, the active bevel block 7 and the lock pin mechanism are stopped by the rear stop surface (202) of the lifting wheel frame 2 as a whole. The transmission rotation of the second bevel gear 44 in the lifting wheel frame 2 is locked, and the first bevel gear 43 continues to rotate clockwise. Under the constraint of the connecting piece 48, the lifting wheel frame 2 performs planetary motion with the first bevel gear 43 as a circle, and the pulley 3 rises up and leaves the track, changing to manual mode.

[0051] An electric pulley provided in an embodiment of the present invention cooperates with a lifting guide structure, and only one power component is needed to drive the pulley 3 to rotate and lift, the electric pulley will not get stuck, and the user experience is good.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric pulley, characterized in that: The invention comprises a main housing, a lifting wheel frame connected to the main housing and capable of being lifted and lowered relative to the main housing, and a pulley connected to the lifting wheel frame, wherein a clutch component is arranged in the main housing, and the lifting wheel frame is connected to a power component for driving the clutch component to move and the pulley to rotate, wherein the power component comprises a transmission gear set and a power motor; the clutch component comprises a lifting rack that can be meshed with the transmission gear set and driven to slide by the transmission gear set, a rack clutch block driven by the lifting rack, an active inclined block that can be driven by the rack clutch block and can drive the lifting wheel frame to lift and lower, and a driven inclined block connected to the main housing. A movable bevel block, a lifting guide structure is arranged between the active bevel block and the passive bevel block; a tilting block is integrally formed at the upper end of the lifting rack, and the rack clutch block is provided with an inclined hole for matching with the tilting block; an inclined support block is also arranged at the upper end of the tilting block, one side of which can be against the inclined hole; the transmission gear set includes a driving gear driven by the power motor and a driven gear set that can rotate planetarily relative to the driving gear, the driven gear set includes a first bevel gear, a second bevel gear and a third bevel gear, the lifting rack is located above the third bevel gear, and the lifting rack is meshed with the third bevel gear.

2. An electric pulley as claimed in claim 1, characterized in that: The driven gear set is meshed with the driving gear, and the lifting rack is meshed with the driven gear set.

3. An electric pulley as claimed in claim 2, characterized in that: Guide columns are arranged on both sides of the lifting rack, and the active inclined block is provided with a longitudinal connecting slide groove for the guide column to extend into and slide up and down, and the active inclined block is slidably connected to the lifting wheel frame.

4. An electric pulley as claimed in claim 3, characterized in that: The passive bevel block is connected to the main shell, and a lifting guide bevel is provided at the front end of the passive bevel block, and a pre-stressed force storage elastic member is provided at the rear end of the passive bevel block; the active bevel block is connected to a locking pin, and the active bevel block presses forward against the passive bevel block, and the active bevel block moves downward and can further compress the force storage elastic member to store energy of the force storage elastic member; when the force storage elastic member releases its elasticity and pushes the passive bevel block backward, it drives the locking pin backward and locks the lifting rack out of engagement with the transmission gear set; when unlocking, after the unlocking block pushes the locking pin to unlock, the force storage elastic member pushes the passive module, the active bevel block, the lifting rack, the rack clutch block and the locking pin backward, so that the lifting rack re-engages with the transmission gear set.

5. An electric pulley as claimed in claim 4, characterized in that: The active inclined block is connected with a locking shaft, and the lifting wheel frame has a locking groove for the locking shaft to be locked in; the locking groove includes a rising groove and a stop groove connected to the upper part of the rising groove.

6. An electric pulley as claimed in claim 5, characterized in that: The lifting wheel frame has a stop surface for stopping the rack clutch block, and the front inclined surface of the inclined block in the lifting rack acts on the front side inclined surface of the inclined hole in the rack clutch block, so that the lifting rack moves upward and disengages from the driven gear set.

7. An electric pulley as claimed in claim 6, characterized in that: The power motor is connected to a spur gear, and the spur gear is connected to a worm gear; the pulley is provided with two groups, and the two groups of pulleys are respectively connected to a first gear and a second gear; the first bevel gear is meshed with the worm gear, and the second bevel gear is meshed with the first bevel gear; the first gear is meshed between the second bevel gear and the third bevel gear, and the second gear is meshed with the third bevel gear, the first gear, the second gear, the second bevel gear and the third bevel gear are connected to the lifting wheel frame, the first bevel gear is connected to the main housing, and the first bevel gear and the second bevel gear are rotatably connected through a connecting piece; The power motor is a brushless motor, a motor fixing flange is arranged in the main housing, the worm gear is coaxially connected with a first spur gear, the rotating shaft of the brushless motor is connected with a second spur gear, and the first spur gear is meshed with the second spur gear.

8. An electric pulley as claimed in claim 7, characterized in that: The electric pulley further comprises an unlocking component, which comprises an electromagnetic component and an unlocking block driven by the electromagnetic component, wherein the unlocking block is provided with an unlocking inclined surface for driving the locking shaft to exit the stop groove and slide at the bottom of the rising groove.

9. The electric pulley according to claim 1, characterized in that: The lifting guide structure includes a first inclined surface arranged at the front end of the active inclined block and arranged obliquely upward, and a second inclined surface arranged at the front end of the passive inclined block and arranged obliquely downward.

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