Roller shutter window pull rope lower pulley assembly

Abstract

The utility model discloses a roll-up window pull rope lower pulley assembly which comprises an installation frame, a shaft rod is fixed in the installation frame, a pulley is connected to the shaft rod in a rotating mode, the installation frame is clamped in a positioning plate, the positioning plate is clamped in a window frame, the side, away from the installation frame, of the positioning plate is connected with a clamping plate, and clamping holes are formed in the two sides of the clamping plate. Two limiting blocks are fixed to the inner side of the lower portion of the window frame, the width of the clamping plate is equal to the distance between the two limiting blocks so that the clamping plate can be inserted between the two limiting blocks, grooves are formed in the opposite faces of the inner sides of the two limiting blocks, clamping blocks matched with the clamping holes are connected into the grooves through elastic pieces, and the clamping blocks can be completely hidden into the grooves by extruding the clamping blocks. According to the utility model, the pulley can be conveniently mounted without being fixed by screws, and is convenient to mount and replace.

Description

Technical Field

[0001] The utility model relates to the technical field of rolling shutter windows, in particular to a lower pulley assembly under a pulley rope of a rolling shutter window. Background Art

[0002] Roller shutters have a beautiful and simple appearance and are suitable for shading windows in offices and homes, especially for rolling shutters on large glass curtain walls. A roller shutter shaft is provided on the upper part of the roller shutter, and the roller shutter shaft is driven by a pull rope to open or close the roller shutter cloth, and the pull rope needs to be wound around the upper pulley and the lower pulley.

[0003] like Figure 5 FIG. 1 is a schematic diagram of an existing lower pulley assembly. Each time it is installed, it needs to be fixed in the side frame of the window by screws, which makes installation inconvenient. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a lower pulley assembly under a roller shutter window pull rope to solve the problems mentioned in the above background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A lower pulley assembly under a roller shutter window pull rope comprises a mounting frame, an axle rod is fixed in the mounting frame, a pulley is rotatably connected to the axle rod, the mounting frame is clamped in a positioning plate, the positioning plate is clamped in a window frame, a clamping plate is connected to a side of the positioning plate away from the mounting frame, clamping holes are provided on both sides of the clamping plate, two limit blocks are fixed to the inner side of the lower part of the window frame, the width of the clamping plate is equal to the distance between the two limit blocks, so that the clamping plate can be inserted between the two limit blocks, grooves are provided on the opposite surfaces of the inner sides of the two limit blocks, a clamping block matching the clamping hole is connected to the groove through an elastic member, and the clamping block can be completely hidden in the groove by squeezing the clamping block.

[0007] Preferably, the elastic member is a first spring, one end of which is fixed in the groove and the other end is connected to the clamping block.

[0008] The above technical solution can completely hide the card block in the groove when the card plate squeezes it. When the card block is aligned with the card hole, the card block rebounds outward under the action of the first spring and is inserted into the card hole to achieve the installation of the positioning plate and the window frame.

[0009] Preferably, a slide groove is provided on one side of the positioning plate along its height direction, a through hole connected to the slide groove is provided at one end of the positioning plate, a sliding sleeve is connected to one side of the mounting frame, a guide rod is fixed at one end of the slide groove away from the through hole, the slide sleeve is inserted into the slide groove through the through hole and inserted on the guide rod, a second spring is sleeved on the guide rod, and the second spring rests on the slide sleeve; sockets are provided on both sides of the through hole on the positioning plate, the two sockets are connected to the through hole, and pins are inserted in the two sockets to prevent the slide sleeve from detaching from the slide groove.

[0010] According to the above technical solution, when the installation frame is installed on the positioning plate, the second spring is first sleeved on the guide rod, and then the sliding sleeve of the installation frame is inserted from the through hole on the positioning plate and sleeved on the guide rod, so that the sliding sleeve contacts the second spring, and then the installation frame is pressed down, and then the latch is inserted from the insertion hole, and then the installation frame is released. Under the action of the second spring, the installation frame rebounds and abuts against the latch, thereby completing the installation of the installation frame and the positioning plate. The second spring has the functions of buffering and releasing energy, and when the pull rope is pulled, the pull force can reduce the damage to the pulley.

[0011] Preferably, the lower end of the clamping plate away from the mounting frame is tapered.

[0012] In the above technical solution, one end of the clamping plate is tapered to facilitate its insertion between the two limit blocks and to squeeze the clamping blocks through the tapered surface.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] First, clamp the installation frame on the positioning plate, and then insert the clamping plate on the rear side of the positioning plate between the two limit blocks in the window frame. During the insertion process, the clamping plate squeezes the clamping block to shrink it into the groove. When the clamping hole is aligned with the clamping block, the clamping block rebounds outward under the action of the elastic member and is inserted into the clamping hole, thereby realizing the installation of the pulley without the need for fixing with screws, which is convenient for installation and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the utility model;

[0016] Figure 2 This is a schematic diagram after the installation frame and the positioning plate are separated;

[0017] Figure 3 for Figure 1 Bottom view of

[0018] Figure 4 This is a schematic diagram of the positioning plate being inserted into the window frame;

[0019] Figure 5 A schematic diagram of an existing lower pulley assembly;

[0020] In the figure: 1-installation frame, 2-pulley, 3-positioning plate, 4-window frame, 5-card plate, 6-card hole, 7-limit block, 8-groove, 9-card block, 10-first spring, 11-slide groove, 12-through hole, 13-slide sleeve, 14-guide rod, 15-second spring, 16-pin. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 , a pulley assembly on a roller shutter window pull rope, comprising a mounting frame 1, a shaft rod is fixed in the mounting frame 1, a pulley 2 is rotatably connected to the shaft rod, the mounting frame 1 is clamped in a positioning plate 3, the positioning plate 3 is clamped in a window frame 4, a clamping plate 5 is connected to the side of the positioning plate 3 away from the mounting frame, clamping holes 6 are opened on both sides of the clamping plate 5, two limit blocks 7 are fixed to the inner side of the lower part of the window frame 4, when the window frame is produced, the limit blocks 7 are pre-selected and fixed in the window frame 5 to facilitate the subsequent installation of the pulley; The width of the card plate 5 is equal to the distance between the two limit blocks 7, so that the card plate 5 can be inserted between the two limit blocks 7. A groove 8 is provided on the opposite surfaces of the inner sides of the two limit blocks 7. A card block 9 matching the card hole is connected to the groove 8 through an elastic member. The elastic member is a first spring 10, one end of which is fixed in the groove 8 and the other end is connected to the card block 9. By squeezing the card block 9, the card block 9 can be completely hidden in the groove 8. The card block 9 can be inserted into the card hole 6 through the restoring force of the first spring 10.

[0023] One side of the positioning plate 3 is provided with a slide groove 11 along its height direction, and one end of the positioning plate 3 is provided with a through hole 12 connected to the slide groove 11, and one side of the mounting frame 1 is connected to a slide sleeve 13, and a guide rod 14 is fixed to the end of the slide groove 11 away from the through hole, and the slide sleeve 13 is inserted into the slide groove 11 through the through hole 12 and inserted on the guide rod 14, and a second spring 15 is sleeved on the guide rod 14, and the second spring 15 rests on the slide sleeve 13; the positioning plate 3 is provided with plug holes on both sides of the through hole 12, and the two plug holes are connected with the through hole, and pins 16 are inserted in the two plug holes for preventing the slide sleeve 13 from escaping from the slide groove 11. When installing the installation frame 1 on the positioning plate 3, firstly, the second spring 15 is sleeved on the guide rod 14, and then the sliding sleeve 13 of the installation frame 1 is inserted through the through hole 12 on the positioning plate 3 and sleeved on the guide rod 14, so that the sliding sleeve 13 contacts the second spring 15, and then the installation frame 1 is pressed down, and then the latch 16 is inserted through the insertion hole, and then the installation frame 1 is released. Under the action of the second spring 15, the installation frame 1 rebounds and abuts against the latch 16, thereby completing the installation of the installation frame 1 and the positioning plate 3. Among them, the second spring 15 has the functions of buffering and releasing energy, and when the pull rope is pulled, the pull force can reduce the damage to the pulley 2.

[0024] The lower end of the clamping plate 5 away from the mounting frame 1 is tapered, and the outer end surface of the clamping block 9 is a bevel that matches the tapered surface of the clamping plate 5. One end of the clamping plate 5 is tapered to facilitate its insertion between the two limit blocks 7 and to squeeze the clamping block 9 through the tapered surface.

[0025] During installation, first clamp the installation frame 1 on the positioning plate 3, and then insert the clamping plate 5 on the rear side of the positioning plate 3 between the two limit blocks 7 in the window frame 4. During the insertion process, the clamping plate 5 squeezes the clamping block 9 to shrink it into the groove 8. When the clamping hole 6 is aligned with the clamping block 9, under the action of the second spring 15, the clamping block 9 rebounds outward and is inserted into the clamping hole 6, thereby realizing the installation of the pulley without the need for fixing with screws, which is convenient for installation and replacement.

[0026] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A roller pulley assembly under a roller blind pulley, comprising a mounting frame (1), a shaft rod being fixed inside the mounting frame (1), a pulley (2) being rotatably connected to the shaft rod, characterized in that: The installation frame (1) is clamped in a positioning plate (3), and the positioning plate (3) is clamped in a window frame (4). A clamping plate (5) is connected to a side of the positioning plate (3) away from the installation frame. Clamping holes (6) are provided on both sides of the clamping plate (5). Two limit blocks (7) are fixed on the inner side of the lower part of the window frame (4). The width of the clamping plate (5) is equal to the distance between the two limit blocks (7), so that the clamping plate (5) can be inserted between the two limit blocks (7). Grooves (8) are provided on the opposite surfaces of the inner sides of the two limit blocks (7). A clamping block (9) matching the clamping hole is connected in the groove (8) through an elastic member. By squeezing the clamping block (9), the clamping block (9) can be completely hidden in the groove (8).

2. The roller shutter window pulley assembly according to claim 1, characterized in that: The elastic member is a first spring (10), one end of which is fixed in the groove (8) and the other end of which is connected to the clamping block (9).

3. The roller shutter window pulley lower pulley assembly according to claim 2, characterized in that: A slide groove (11) is provided on one side of the positioning plate (3) along its height direction; a through hole (12) communicating with the slide groove (11) is provided on one end of the positioning plate (3); a slide sleeve (13) is connected to one side of the mounting frame (1); a guide rod (14) is fixed to the end of the slide groove (11) away from the through hole; the slide sleeve (13) is inserted into the slide groove (11) through the through hole (12) and is inserted on the guide rod (14); a second spring (15) is sleeved on the guide rod (14), and the second spring (15) abuts against the slide sleeve (13).

4. The roller shutter window pulley lower pulley assembly according to claim 3, characterized in that: The positioning plate (3) is provided with insertion holes on both sides of the through hole (12), the two insertion holes are connected to the through hole, and latches (16) are inserted into the two insertion holes to prevent the sliding sleeve (13) from being separated from the sliding groove (11).

5. The roller shutter window pulley lower pulley assembly according to claim 4, characterized in that: The lower end of the clamping plate (5) away from the installation frame (1) is tapered, and the outer end surface of the clamping block (9) is a beveled edge matching the tapered surface of the clamping plate (5).

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