BR102019010733A2 - pulley device - Google Patents

Abstract

pulley device the present invention describes a pulley device comprising a pulley housing; a sliding plate that is vertically movable and mounted on the sheave housing; a pulley mounted on the sliding plate; a height adjustment mechanism for adjusting the height of the pulley; and a damper that connects the skid plate and sheave housing. The pulley device provided by the present invention has solved the problems that it is difficult for the screwdriver to adjust the height of the pulley, and some hair or wool is inserted into the adjustment hole, and the thread of the adjustment screw is easily damaged in use. .

Description

“PULLEY DEVICE

FIELD OF THE INVENTION [0001] The present invention relates to a sliding door device, in particular a sliding door pulley device, in the field of hardware accessories for architectural decoration.

BACKGROUND OF THE INVENTION [0002] At present, sliding doors are widely used in the door industry for buildings due to their ease of installation and convenience in use. Normally, the lower and upper ends of a sliding door are equipped with pulleys respectively to match the corresponding upper and lower rails, so that the user can push and pull the sliding doors conveniently.

[0003] In the prior art, CN201320016707.2 discloses pulley devices placed on the top or bottom of the sliding doors. As shown in Fig. 1a and Fig. 1b, a descending sloped circular hole 02 is arranged in the front facade of a lower plate, and a transverse screw 03 is arranged in the slanted circular hole 02. When the movable door 04 is irregular, the screw transverse 03 can be rotated by the screwdriver 05, so that the pulley 01 is raised or lowered, the height of the sliding door is adjusted. As shown in Fig. 1b, when the pulleys 01 are installed on a sliding door 04, the assembly has several disadvantages indicated below: (1) since the inclined circular hole 02 installed with the cross screw 03 is located on the facade

Petition 870190049011, of 05/24/2019, p. 4/51

2/17 front of the bottom plate, the pulley 01 can only be installed in the recessed type, while it cannot carry out the installation of the type of vane wheel and the installation of the type of vane wheel has to be additionally designed; (2) in practical use, the side of the movable door 04 mounted with pulleys 01 is often placed with a drawer and similar furniture, there is a small gap between the two. Therefore, when using the screwdriver 05 to adjust the height of the cross screw 03, it is difficult for the screwdriver 05 to project obliquely from the clearance into the inclined circular hole 02, so that the adjustment cannot be carried out .

[0004] In the prior art, a pulley device, capable of being installed vertically and in an inverted manner, is presented in CN2017106425916. As shown in figure 2, the height adjustment mechanism includes an adjustment nut 2 and an adjustment screw that can be raised or lowered when the adjustment nut is turned, and an adjustment hole 8 penetrates through both of the boxes. 3-2 and the bottom plate 3-1 is provided in the housing 3. In the mounting state, the end of the adjustment screw rests against the sliding plate, and the adjustment nut 2 is at least partially received in the adjustment hole 8 The prior art mentioned above has the following disadvantages: (1) once the adjustment hole 8 is exposed, and the application environment is mainly at home, it is easy to get some hair or wool to be inserted into the adjustment hole 8 that wraps around the adjustment screw 1, which affects its work and service life. (2) The adjustment screw serves as

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3/17 an internal adjustment, and the thread of the adjustment screw will withstand most of the force. Thus, the thread of the adjusting screw 1 is easily damaged and the sliding filament is in contact with the sliding plate several times. Therefore, it is desirable to obtain durable and stable pulleys, which can be installed on the upper or lower ends of the sliding doors in a vane wheel or inlaid type installation.

SUMMARY OF THE INVENTION [0005] The objective of the present invention is to overcome the deficiency that a type of pulley device can only perform the installation of the vane wheel type or the installation of the flush type, the deficiency that the height of the pulley it is not convenient to adjust and the pulleys in the prior art are easily damaged, have low reliability and short service life.

[0006] To achieve the objective, a pulley device is provided, comprising a pulley housing; a sliding plate that is vertically movable and mounted in the pulley housing; a pulley mounted on the sliding plate; a height adjustment mechanism for adjusting the height of the pulley; and a damper that connects the sliding plate and the pulley housing.

[0007] The present invention provides a height adjustment mechanism that is capable of adjusting the height of the pulley device both in vertical and inverted assembly (installation of the vane wheel type or installation of the flush type), in which case the overhang is reserved for a height adjustment mechanism

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4/17 and a damper (in particular, the total thickness of the pulley device corresponds with the height adjustment mechanism and the damper, in particular, the pulley receives both the height adjustment mechanism and the damper, so that the thickness pulley is consistent with the fact that there is no difference between vertical and inverted assembly). In the case of the installation position, the sheave device can be either designed from the sliding door body or embedded in the sliding door body. In addition, it makes it easier for the engineer to choose the method of installing the upper and lower pulley device for the sliding door. Vane wheel installation and recessed installation have their own advantages and disadvantages, respectively. Vane wheel type installation is more convenient, which can be installed without pre-set installation slots. The built-in installation inserts the pulley device into the pre-adjusted groove in the door body. The space of the pulley device that protrudes from the door body is reduced, and the door body that appears as a whole is more aesthetically attractive. In the technical solution of the present invention, the installer can purchase a single pulley and choose any way to install according to the user's preference.

[0008] The height adjustment mechanism comprised a fixing block inserted in the pulley housing, an adjustment set that penetrates through the fixing block and a second projection fitted into the adjustment set. The outer contour of the second projection has a radius

Petition 870190049011, of 05/24/2019, p. 7/51

5/17 gradually increasing, and the second projection rests against the first projection on one end of the sliding plate. The distance from the outer contour of the second projection to the adjustment set can be adjusted by rotating the adjustment set. The height adjustment mechanism is also provided with a cover plate to fix the fixing block, and the cover plate is fixed on the upper surface of the pulley housing. The second projection is cam-shaped, and the outer contour of the second projection is fitted with a gear. The second projection is provided with a position limiting projection at both ends of the external contour in the second projection. The adjustment distance is maintained so that the path of the position limiting protuberance does not change circularly and the adjustment distance can be controlled in a stable way. The adjustment set comprises a front adjustment lever and a rear adjustment lever mounted on the front adjustment lever, and adjustment holes that are generally selected as hexagonal sockets, are provided on both the front adjustment lever and the rear adjustment lever.

[0009] The present invention has additional benefits. To rotate the second cam-shaped projection, the installer can rotate the front adjustment lever or the rear adjustment lever by inserting a hexagon wrench into the hexagon socket and turning it manually. In this way, the height of the pulley device can be adjusted. In the present invention, there will be no problem that the gap between the sliding door and the furniture is too small to adjust the height of the locking device.

Petition 870190049011, of 05/24/2019, p. 8/51

6/17 pulley using a screwdriver that appears in the prior art. As a result, the height adjustment mechanism of the pulley device is not restricted by the narrow space, and greatly facilitates the installer to adjust the height of the pulley device. In addition, there will be no problem that after the pulley device is adjusted by the cooperation of an adjustment nut and an adjustment screw, the pulley device is not available or damaged by any hair or wool inserted in the adjustment hole. Thus, the working reliability and service life of the pulley device can be improved.

[0010] Another better scheme is that the fixing block is provided with a rotating hole to rotate the front adjustment lever; the first projection is slanted, and the first projection is matched to the gear in the outer contour of the second projection. Once the first projection is matched to the gear in the outer contour of the second projection, the force will be supported by the clamping block. The fixing block has a sufficient surface area, so it will not be deformed and damaged. In this way, the problem of damage to the adjustment nut thread can be avoided. In addition, it is convenient and easy to adjust the distance of the second projection with a hex key to be able to raise or lower the pulley device.

[0011] Another better scheme is that the front adjustment lever comprises an anti-caking step and a connecting pin, the anti-caking step is inserted into the groove of the fixing block, and the connecting pin passes through a central hole in the second projection, is

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7/17 rear adjustment lever coupling end connects with the rear adjustment lever. The front adjustment lever and the rear adjustment lever are integrated for easy installation, and product reliability is improved.

[0012] Another better scheme is that the sliding plate is vertically movable, and the pulley mounted on the sliding plate is rotating. Thus, due to the combination of the pulley and the rail, the pulley on the rail allows the sliding door to move smoothly over the rail.

[0013] Another better scheme is that the damper is a spring with one end leaning against the sliding plate and the other end leaning against the pulley housing. The spring provides the pulley with a force, forcing it on the rail, making the pulley move more smoothly on the rail.

[0014] Another better scheme is that the pulley is connected to the sliding plate by a rivet that is rotatable, and the pulley protrudes partially from the sliding plate. It is convenient to open or close the door by sliding through the pulleys, rolling over the rails at the upper and lower ends of the door. The sliding plate includes a plate and a projection protruding from the plate. The protrusion is provided with a meeting hole, and one end of the spring is embedded in the meeting hole. By means of such a way of meeting, the spring can be effectively compressed between the pulley housing and the sliding plate, which enhances the cooperation of the spring with the sliding plate, and brings the benefit of the elastic force

Petition 870190049011, of 05/24/2019, p. 10/51

8/17 facilitate the rolling of the pulley mounted on the sliding plate.

[0015] Another better scheme is that the sliding plate is provided with a position limiting groove engaged with a position limiting block in the pulley housing. During installation, the sheave is raised to the minimum distance from the door body and placed on the rail, then the position limiting block is released, and after adjusting the front adjustment lever and the rear adjustment lever. In this way, it is possible to achieve the function of locking the pulley in the minimum distance. This design is convenient to install and avoids the problem that the installation is blocked due to the fact that the gap between the pulley and the rail is very small.

[0016] The present invention provides a movable door comprising a pulley device and a rail used to move the pulley device and the door body, and the rail is located above or below the door body.

[0017] A sheave device comprises a sheave housing, a sliding plate that is vertically movable and mounted on the sheave housing, a sheave mounted on the sliding plate, a height adjustment mechanism for adjusting the height of the sheave, and a damper that connects the sliding plate and the pulley housing.

[0018] The height adjustment mechanism comprises a first projection and a second projection that can combine with the first projection, and the first projection is arranged on the sliding plate, and the second

Petition 870190049011, of 05/24/2019, p. 11/51

9/17 projection is mounted on the pulley and rotary housing, and the height of the pulley can be adjusted when the first projection rests against different positions of the second projection. The height adjustment mechanism also comprises a fixing block mounted on the pulley housing and an adjustment set that triggers the rotation of the second projection, and the adjustment set penetrates through the fixing block. The second projection rests against the first projection at one end of the sliding plate. The distance from the outer contour of the second projection to the adjustment set can be adjusted by rotating the adjustment set. The height adjustment mechanism is also provided with a cover plate to fix the fixing block, and the cover plate is fixed on the upper surface of the pulley housing. The second projection is cam-shaped, and the outer contour of the second projection is fitted with a gear. Position limiting protrusions are arranged at each junction curve of both ends of the outer contour in the second projection. The adjustment set comprises a front adjustment lever and a rear adjustment lever mounted on the front adjustment lever, and hexagonal holes are provided on both the front adjustment lever and the rear adjustment lever.

BRIEF DESCRIPTION OF THE DRAWINGS [0019] Figure 1 is a rear view of the upper and lower pulleys on the sliding door in the prior art;

[0020] Figure 1b is a diagram of the upper and lower pulleys on the sliding door in the state of use of the

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Prior art 10/17;

[0021] Figure 2a is a schematic view of the upper and lower pulleys of the prior art sliding door;

[0022] Figure 2b is an exploded view of the upper and lower pulleys of the prior art sliding door;

[0023] Figure 3 is a cross-sectional view showing a pulley device capable of being mounted vertically and inverted according to the embodiment of the present invention;

[0024] Figure 4 is another cross-sectional view showing a pulley device capable of being mounted vertically and inverted according to the embodiment of the present invention;

[0025] Figure 5 is an exploded view of a pulley device capable of being mounted vertically and inverted according to the embodiment of the present invention;

[0026] Figure 6 is a view showing the way of installing the adjustment set of a pulley device capable of being mounted vertically and inverted according to the mode of the present invention;

[0027] Figure 7 is a schematic view showing the height adjustment mechanism of a pulley device capable of being mounted vertically and inverted according to the embodiment of the present invention;

[0028] Figure 8 is a schematic view of the fixing block of a pulley device capable of being mounted vertically and inverted according to the embodiment of the present invention.

Petition 870190049011, of 05/24/2019, p. 13/51

11/17 [0029] Reference Numbers pulley housing 1; bottom plate 1-1; sliding plate assembly cavity 1-2; position limiting block 1-3;

first projection 2-1; pulley 2-2; the sliding plate 2-3; the adjacent hole 2-4; position limiting slot 2-5;

height adjustment mechanism 3; fixing block 3-1; second projection 3-2; cover plate 3-3; gear 3-4; position limiting protrusion 3-5; front adjustment lever 3-6; anti-aging step 3-6-1; the connecting pin 3-6-2; rear adjustment lever 3-7; slot 3-8;

buffer 4; spring 4-1.

DETAILED DESCRIPTION OF THE ILLUSTRATED MODALITIES [0030] The present invention will be further described in detail below with reference to the attached drawings and specific modalities. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

[0031] One embodiment of the pulley of the present invention is exemplified by a pulley device mounted on the lower end of the sliding door. As shown in Figures 3 to 8, the sheave device comprises a sheave housing 1, and a sliding plate 2-3 which is mounted in the sheave housing 1 and can be moved up and down, and an adjustment mechanism height 3 to adjust the height of the sliding plate 2-3, and a damper 4 that engages the sliding plate 2-3 and the pulley housing 1. The

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12/17 pulley 1 includes a bottom plate 1-1 and a sliding plate assembly cavity 1-2 on the bottom plate 1-1. The mounting cavity 1-2 projects from the pulley housing 1 and is capable of receiving the sliding plate 2-3 so that both the installation of the vane wheel type and the installation of the flush type can be carried out.

[0032] Specifically, the installation mode is presented as follows. In the vane wheel type installation, the bottom plate 1-1 is adjacent to the door body of the sliding door being fixed by means of screws, and the mounting cavity 1-2 protrudes from the door body. However, the height of the sheave device can be adjusted from one side of the bottom plate 1-1, which is away from the mounting cavity 1-2 by means of a height adjustment mechanism 3. When installing the flush type, mounting cavity 1-2 is embedded in a pre-adjusted groove in the door, and the door is attached to bottom plate 1-1 with the side next to mounting cavity 1-2. However, the height of the pulley can be adjusted from the side of the bottom plate 1-1, which is not fixed to the door, using the height adjustment mechanism 3. The installer can purchase a pulley device and choose any way to install according to the user’s preference.

[0033] In some embodiments, the pulley housing 1 is a piece of a plate with a hollow cavity containing the sliding plate 2-3, the height adjustment mechanism 3 and the shock absorber 4. However, the pulley housing 1 and the height adjustment mechanism 3 work independently and have no interference. The pulley housing 1 is installed in the door body without the

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13/17 need to distinguish vertical or inverted mounting.

[0034] The specific adjustment situation is presented as follows. The height adjustment mechanism 3 is provided with a fixing block 3-1 embedded in the pulley housing 1, and the adjustment set that penetrates through the fixing block 3-1, and the second projection 3-2 fitted into the assembly adjustment. The adjustment set includes a front adjustment lever 3-6 and a rear adjustment lever 3-7 mounted on the front adjustment lever 3-6. The outer contour of the second projection 3-2 has a gradually increasing radius and is located against the first projection 2-1 at one end of the sliding plate 2-3. The distance from the outer contour of the second projection 3-2 to the adjustment set can be flexibly adjusted by rotating the adjustment set. Then, the height adjustment of the sliding plate 2-3 can be carried out. The height adjustment mechanism is provided with a cover plate 3-3 to fix the fixing block 3-1 stuck inside the mounting cavity 1-2. The cover plate 3-3 is attached to the upper surface of the sheave housing 1. And the cover plate 3-3 is secured with a nut in the groove on the outer surface of the mounting cavity 1-2, so that the cover 3-3 is horizontal in the same way as the outer surface of the mounting cavity 1-2. The height adjustment mechanism 3

if become an structured hidden type, so that the wool or O hair no will penetrate the inland of mechanism in adjustment in height 3 and will cause the block of adjustment. THE Monday projection 3-2 is cam-shaped, and O contour ext end of

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14/17 second projection 3-2 is equipped with a 3-4 gear. Gear 3-4 cooperates with the first projection 2-1 during working operation, and the height adjustment mechanism 3 will not move even if the sliding plate 2-3 bounces multiple times. The limiting projections of position 3-5 are arranged at each junction curve of both ends in the form of a tooth - wave of the external contour in the second projection 3-2. The adjustment distance is maintained so that the route of the limiting protrusion of position 3-5 does not change in a circular shape (shortest and longest forwards and backwards) and the adjustment distance can be controlled in a stable way. Hexagonal holes are provided in both the front adjustment lever 3-6 and the rear adjustment lever 3-7 that belong to the adjustment set.

[0035] It should be noted that the second projection 3-2 of the height adjustment mechanism of the pulley 3 of the present invention is not limited to the shape of the cam, and to the shape with a gradually increasing radius (such as a wavy rod, eccentric wheel , torsion bar, etc.) within the scope of protection of the present invention. To rotate the second cam shape 3-2, the installer can rotate the front adjustment lever 3-6 or the rear adjustment lever 3-7 by manually inserting a hexagon wrench into the hexagon socket. In this way, the height of the pulley device can be adjusted. And the problem that the distance between the sliding door and the furniture is too small to adjust the height of the pulley device by using a screwdriver will not occur. As a result, the device's height adjustment mechanism 3

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15/17 pulley is not restricted by the narrow space, and it greatly facilitates the installer to adjust the height of the pulley device. In addition, there will be no problem that after the pulley device is adjusted by the cooperation of an adjustment nut and an adjustment screw, the pulley device is not available or damaged by any hair or wool inserted in the adjustment hole. Thus, the working reliability and service life of the pulley device can be improved.

[0036] The locking block 3-1 is provided with a rotary hole for the rotation of the front adjustment lever 3-6; the first projection 2-1 is angled and the first projection 2-1 is combined with a 3-4 gear in the outer contour of the second projection 3-2, and the first angled projection 2-1 arranged in opposition to the direction of the gear tooth 3-4, so that the second projection 3-2 will not rotate even if it encounters multiple hops. The first projection 2-1 is matched to the gear in the outer contour of the second projection 3-2, the force will be supported by the locking block 3-1. Fixing block 3-1 has sufficient surface area, so it will not deform and will be damaged. In this way, the problem of damage to the adjustment nut thread can be avoided. In addition, it is convenient and easy to adjust the distance between the projection with a hexagon wrench to make the pulley device go up or down. The front adjustment lever 3-6 comprises an anti-slip step 3-6-1, a connecting pin 3-6-2 and a coupling end of the rear adjustment lever 3-7. It is important to note that the coupling end and the rear adjustment lever 3-7 are integrated. The stage

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16/17 anti-slip 3-6-1 is inserted into groove 3-8 of fixing block 3-1. And the anti-slip step 3-6-1 is cylindrical in shape and rotated with the rotation of the front adjustment lever 3-6. The connecting pin 3-6-2 penetrates through a central hole in the second projection 3-2. The coupling end connects with the rear adjustment lever 3-

7. Front adjustment lever 3-6 and rear adjustment lever 3-7 are integrated to facilitate installation and improve product reliability.

[0037] The sliding plate 2-3 is vertically movable, and the pulley 2-2 mounted on the sliding plate is rotatable. Thus, due to the cooperation of the pulley 2-2 with the rail, the pulley 2-2 on the rail allows the sliding door to move smoothly on the rail. The damper 4 is provided with a spring 4-1. Spring 4-1 is received in mounting cavity 1-2, with one end of spring 4-1 against the sliding plate 2-3, and the other end against the end edge of the mounting cavity 1-2 . The spring 4-1 provides the pulley 2-2 with a force acting on the rail, making the pulley 2-2 roll more smoothly on the rail. The pulley 2-2 is connected to the sliding plate 2-3 by a rivet and rotating, and the pulley 2-2 protrudes partially from the sliding plate 2-3. It is convenient to open or close the door by sliding it through the pulley 2-2 rolling on the rail at the upper and lower ends of the door. Sliding plate 2-3 includes a plate and a projection protruding from the plate. The projection is provided with an opening hole 2-4, and an end of the spring 4-1 is embedded in the opening hole 2-4. Through such a form of

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17/17 encounter, the spring 4-1 can be effectively compressed between the mounting cavity 1-2 and the sliding plate 2-3, which enhances the cooperation of the spring 4-1 and the sliding plate 2-3, and brings the the benefit that the spring force facilitates the rolling of the pulley 2-2 mounted on the sliding plate. The bottom plate 1-1 is provided with a mounting hole for securing the pulley 2-2 to the door.

[0038] The sliding plate 2-3 is provided with a position limiting groove 2-5 which is engaged with the position limiting block 1-3 on the bottom plate 1-1. During installation, the pulley 2-2 is raised to the minimum distance from the door body and placed on the rail, then the position limitation block 1-3 is released, and afterwards, adjust the front adjustment lever 3-6 and the rear adjustment lever 3-7. In this way, the function of locking the pulley 2-2 at the minimum distance can be performed. This design is convenient to install and avoids the problem that the installation is blocked due to the distance between the pulley and the track being too small.

[0039] We show and describe the modality according to the present invention, it should be clear to those skilled in the art that other modalities can be made without departing from the scope of the present invention. In addition, while some specific terms are used in this specification, the terms are used for convenience only and do not constitute any limitation of the invention.

Claims (10)

1. Pulley device, characterized by the fact that it comprises: a pulley housing (1); a sliding plate (2-3) that is vertically movable and mounted in the pulley housing (1); a pulley (2-2) mounted on the sliding plate (23); a height adjustment mechanism (3) for adjusting the height of the pulley; and a damper (4) connecting the sliding plate (2-3) and the pulley housing (1); wherein the height adjustment mechanism (3) comprises a first projection (2-l) and a second projection (3-2) that can combine with the first projection (2-1), and the first projection (2-1 ) is arranged at one end of the sliding plate (2-3), and the second projection (3-2) is mounted on the pulley housing (1) and rotating, and the height of the pulley (2-2) can be adjusted when the first projection (2-1) is located against different positions of the second projection (3-2). 2/3 2. Pulley device according to claim 1, characterized by the fact that the height adjustment mechanism (3) further comprises: a fixing block (3-1) mounted in the pulley housing (1), an adjustment set triggers the rotation of the second projection (3-2), and the adjustment set penetrates through the fixing block (3-1) . Petition 870190049011, of 05/24/2019, p. 21/51 3/3 the first projection (2-1) is angled, and the first projection (2l) is combined with the gear (3-4) in the outer contour of the second projection (3-2). 3. Pulley device according to claim 2, characterized in that the adjustment set comprises a front adjustment lever (3-6) and a rear adjustment lever (3-7) mounted on the front adjustment lever (3-6), and adjustment holes are provided on both the front adjustment lever (3-6) and the rear adjustment lever (3-7). 4. Pulley device according to claim 4, characterized by the fact that the second projection (3-2) is cam-shaped, and the outer contour of the second projection (3-2) has a gradually increasing radius, and the outer contour of the second projection (3-2) is provided with a gear (3-4). 5. Device in pulley wake up with the claim 5, featured by the fact that that Monday projection (3-2) is endowed with an protuberance limiting position (3-5) in both contour ends external in the second projection (3-2). 6. Pulley device according to claim 6, characterized by the fact that the adjustment set also comprises an anti-caking step (3-6-1) and a connecting pin (3-6-2), the fixing (31-1) is provided with a groove (3-8), and the anti-clamping step (3-61) is fitted into the groove (3-8) of the fixing block (3-1), and the connecting pin (3-6-2) passes through a central hole in the second projection (3-2). 7. Pulley device according to claim 6, characterized by the fact that the fixing block (3-1) is provided with a rotating hole to rotate the front adjustment lever (3-6); Petition 870190049011, of 05/24/2019, p. 22/51 8. Pulley device according to claim 7, characterized in that the height adjustment mechanism (3) is additionally provided with a cover plate (3-3) to fix the fixing block (31) and the cover plate (3-3) is attached to the upper surface of the pulley housing (1). 9. Pulley device according to claim 8, characterized in that the damper (4) is a spring, and the spring is received in the pulley housing (1), with one end of the spring supporting the sliding plate (2-3) and the other end that rests against the pulley housing (1). 10. Movable door provided with a rail, a door body, and characterized by a pulley device as claimed in any one of claims 1 to 9, wherein the rail is used to move the pulley device and the door body, and the rail is located above the door body or below the door body.