Curtain pulley assembly suitable for curved rail

Abstract

The utility model relates to a curtain pulley assembly suitable for a bent rail, which comprises a bent rail, a bent guide sliding groove arranged on the bent rail, a downward opening arranged at the bottom end of the guide sliding groove, a pulley sliding on the guide sliding groove arranged on the bent rail, and a guide sliding part extending into the guide sliding groove from the opening arranged on the pulley. According to the technical scheme, the upper end of the edge of the opening is provided with a sliding guide edge which extends downwards towards the middle of the opening, and the sliding guide portion is provided with a sliding guide face which abuts against the sliding guide edge in a pressing mode and is matched with the sliding guide edge in shape. The rail bending device is simple in structure, is used for guiding and sliding through the two ends of the opening, is used for rail bending, and prevents jamming.

Description

[Technical field]

[0001] The utility model relates to a pulley assembly for a curtain. [Background technology]

[0002] Curtains are commonly seen indoors, installed on one side of doors and windows for sunshade. Our common doors and windows are usually straight-faced, so a straight curtain track can be used during installation. However, due to different apartment types, there will also be doors and windows with two faces or curved surfaces. In this case, a curved track is needed. When the pulley slides on the curved track, it is easy to get stuck at the turn, especially when the slide is the inner track. Therefore, the curved track on the market is an outer track. For example, the patent number is 202320292826.4 and the name is an I-shaped curved curtain track. The track is I-shaped, and the pulleys are clamped on the track from both sides of the I-shaped track. In this way, the track is relatively small, the sliding is relatively smooth, and it is not easy to get stuck. However, the pulleys are exposed in such a design, which affects the appearance and is inconvenient to install. [Contents of the utility model]

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a curtain pulley assembly suitable for curved rails which has a simple structure and is easy to install.

[0004] In order to solve the above problems, the utility model adopts the following technical solutions:

[0005] A curtain pulley assembly suitable for a curved track comprises a curved track, a curved guide slide groove is provided on the curved track, a downward opening is provided at the bottom end of the guide slide groove, a pulley sliding on the guide slide groove is provided on the curved track, a guide slide portion extending from the opening into the guide slide groove is provided on the pulley, a hanging portion for installing a curtain is provided on the pulley, and the characteristic is that a guide slide edge is provided at the upper end of the edge of the opening and extends downward toward the middle of the opening, and a guide slide surface is provided on the guide slide portion and is pressed against the guide slide edge and matches the shape of the guide slide edge.

[0006] The curtain pulley assembly suitable for a curved track as described above is characterized in that: the guide sliding edge is an arc-shaped edge, the guide sliding portion is an axially horizontal cylindrical shape, and the guide sliding portion is a cylindrical surface.

[0007] The curtain pulley assembly suitable for a curved track as described above is characterized in that the pulley comprises an integrally formed injection-molded shell, and the guide slide is integrally formed on the shell.

[0008] The curtain pulley assembly suitable for a curved track as described above is characterized in that: a slot with an upper opening is provided in the shell, a metal insert is provided in the slot and inserted from the opening, a step is provided in the slot, and a boss is provided on the metal insert that presses against the step.

[0009] A curtain pulley assembly suitable for a curved track as described above is characterized in that: the pulley includes an integrally formed injection-molded shell, the shell is provided with a mounting groove with an upper opening, the mounting groove is provided with a mounting piece inserted from the opening, both ends of the mounting piece are respectively provided with horizontally extending plug connectors, and the guide slide is a hollow cylindrical shape inserted into the plug connector.

[0010] A curtain pulley assembly suitable for a curved track as described above is characterized in that: positioning bosses pressed against the upper end of the shell are provided on both sides of the installation piece below the plug connector, and extrusion bosses pressed against the inner wall of the installation groove are provided on both sides of the installation piece below the positioning bosses, and the extrusion bosses are provided with inclined guide surfaces guiding the inner wall of the installation groove when inserted from the installation groove.

[0011] The beneficial effects of the utility model are as follows: the opening of the guide slide groove of the curved track faces downward, the pulley extends into the guide slide groove from the opening, and the pulley part is not exposed in the guide slide groove during sliding, which does not affect the overall visual effect, and the sliding of the pulley relies on the guide slide edge of the opening edge, which also reduces the width of the guide slide, making the pulley slide more smoothly, preventing jamming, and facilitating installation.

Brief Description of the Drawings

[0012] Figure 1 It is a three-dimensional diagram of the first embodiment of the utility model;

[0013] Figure 2 This is an exploded view of the first embodiment of the utility model;

[0014] Figure 3 This is a three-dimensional diagram of a housing of a first embodiment of the utility model;

[0015] Figure 4 It is a three-dimensional diagram of the second embodiment of the utility model;

[0016] Figure 5 This is an exploded view of the second embodiment of the present utility model;

[0017] Figure 6 It is a cross-sectional view of the pulley of the second embodiment of the utility model. [Specific implementation method]

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods:

[0019] like Figures 1 to 3As shown in the first embodiment, a curtain pulley assembly suitable for a curved track includes a curved track 1, which can be in an arc shape, a wave shape, etc. A curved guide groove 2 is provided on the curved track 1, and the guide groove 2 extends along the length direction of the curved track 1. A downward opening 21 is provided at the bottom end of the guide groove 2, and the opening 21 is in the middle of the bottom end of the guide groove 2, and the width is usually about 1-3 cm. A pulley 3 sliding on the guide groove 2 is provided on the curved track 1, and a guide portion 31 extending from the opening 21 into the guide groove 2 is provided on the pulley 3, and a hanging portion 30 for installing a curtain is provided on the pulley 3, and the hanging portion 30 is a ring-shaped opening. A guide sliding edge 22 extending downward toward the middle of the opening 21 is provided at the upper end of the edge of the opening 21, so that the opening 21 is equivalent to a track, which greatly reduces the width of the track, making it smooth when sliding and not easy to get stuck. A guide sliding surface 32 is provided on the guide sliding portion 31, which is pressed against the guide sliding edge 22 and matches the shape of the guide sliding edge 22. The guide sliding portion 31 can support the pulley 3. In this embodiment, the guide sliding edge 22 is an arc-shaped edge, the guide sliding portion 31 is an axially horizontal cylindrical shape, and the guide sliding portion 31 is a cylindrical surface.

[0020] In order to simplify the structure and facilitate installation, the pulley 3 includes an integrally molded injection-molded shell 33, and the guide slide 31 is integrally formed on the shell 33. A slot 34 with an upper opening is provided in the shell 33, and a metal insert 35 inserted from the opening is provided in the slot 34. The metal insert 35 is used to strengthen the entire pulley assembly. A step 36 is provided in the slot 34, and a boss 37 is provided on the metal insert 35 to press against the step 36. There are two steps 36 and two bosses 37, and the two bosses 37 are on both sides of the metal insert 35 for easy positioning and installation. The metal insert 35 is inserted into the slot 34 by interference fit.

[0021] Embodiment 2, as Figure 4-6 As shown, the difference from the first embodiment is that the structure of the pulley 3 is different. For example, the pulley 3 includes an integrally molded shell 33, and the shell 33 is provided with a mounting groove 38 with an upper opening. The mounting groove 38 is provided with a mounting piece 39 inserted from the opening. The mounting piece 39 is a metal piece and plays a reinforcing role. The two ends of the mounting piece 39 are respectively provided with horizontally extending plug connectors 40. The plug connector 40 and the guide slide 31 are provided with two. The guide slide 31 is a hollow cylindrical shape inserted on the plug connector 40, and the plug connector 40 is inserted from the hollow inside of the hollow cylindrical shape. On both sides of the mounting piece 39, there are provided positioning bosses 41 below the plug connector 40, which are pressed against the upper end of the housing 33. The positioning bosses 41 are positioned downward, and on both sides of the mounting piece 39, there are provided extrusion bosses 42 below the positioning bosses 41, which are extruded against the inner wall of the mounting groove 38. The extrusion bosses 42 are provided with inclined guide surfaces 43 that guide the inner wall of the mounting groove 38 when inserted from the mounting groove 38. The mounting piece 39 can be smoothly squeezed into the mounting groove 38 through the inclined guide surfaces 43, thereby achieving an interference fit.

Claims

1. A curtain pulley assembly suitable for a curved track, comprising a curved track (1), the curved track (1) being provided with a curved guide slot (2), the bottom end of the guide slot (2) being provided with an opening (21) facing downward, the curved track (1) being provided with a pulley (3) sliding on the guide slot (2), the pulley (3) being provided with a guide portion (31) extending from the opening (21) into the guide slot (2), the pulley (3) being provided with a hanging portion (30) for installing a curtain, characterized in that: The upper end of the edge of the opening (21) is provided with a guide sliding edge (22) extending toward the middle of the opening (21) and downward, and the guide sliding portion (31) is provided with a guide sliding surface (32) pressed against the guide sliding edge (22) and matching the shape of the guide sliding edge (22).

2. A curtain pulley assembly suitable for a curved track according to claim 1, characterized in that: The guide sliding edge (22) is an arc-shaped edge, the guide sliding portion (31) is a cylindrical shape with an axial direction horizontal, and the guide sliding portion (31) is a cylindrical surface.

3. A curtain pulley assembly suitable for a curved track according to claim 1, characterized in that: The pulley (3) comprises an integrally-molded shell (33), and the guide slide (31) is integrally-molded and arranged on the shell (33).

4. A curtain pulley assembly suitable for a curved track according to claim 3, characterized in that: The housing (33) is provided with a slot (34) with an upper opening, the slot (34) is provided with a metal insert (35) inserted from the opening, the slot (34) is provided with a step (36), and the metal insert (35) is provided with a shoulder (37) pressed against the step (36).

5. The curtain pulley assembly suitable for a curved track according to claim 1, characterized in that: The pulley (3) comprises an integrally formed injection-molded shell (33), the shell (33) is provided with a mounting groove (38) with an upper opening, the mounting groove (38) is provided with a mounting piece (39) inserted from the opening, both ends of the mounting piece (39) are respectively provided with horizontally extending plug connectors (40), and the guide slide (31) is in the shape of a hollow cylinder inserted into the plug connector (40).

6. A curtain pulley assembly suitable for a curved track according to claim 5, characterized in that: Positioning bosses (41) pressed against the upper end of the housing (33) are provided on both sides of the mounting piece (39) below the plug connector (40); extrusion bosses (42) pressed against the inner wall of the mounting groove (38) are provided on both sides of the mounting piece (39) below the positioning bosses (41); and the extrusion bosses (42) are provided with inclined guide surfaces (43) guiding the inner wall of the mounting groove (38) when inserted from the mounting groove (38).

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