Pulley device

Abstract

The utility model provides a pulley device, and relates to the technical field of door and window structures. The rotating part comprises a rotating shaft rotationally connected to the connecting support and two rotating seats arranged at the two ends of the rotating shaft respectively; the rolling wheel component comprises two rolling wheel assemblies arranged at the two ends of the rotating shaft respectively, each rolling wheel assembly comprises two rolling wheel units arranged on the two sides of the rotating base respectively, and each rolling wheel unit comprises a rolling wheel base rotationally connected with the rotating base and at least two rolling wheels. The rolling wheel units are arranged on the two sides of the rotating base respectively, each rolling wheel on the rolling wheel units can roll independently, and when any rolling wheel is damaged, the rolling wheel units can still be used for a period of time; no matter the lower frame profile deforms and inclines in the length direction or / and the width direction, the contact concave surfaces of the rolling wheels are in close contact with the moving guide rails all the time, and the fan body can smoothly move along the moving guide rails.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of door and window structure, specifically, relate to a pulley device. BACKGROUND

[0002] Door and window structure is usually divided into hinged door and window and mobile door and window, wherein, mobile door and window can move along fixed line or track, and the moving track of mobile door and window can be set along the wall surface, even set in the wall, relative to hinged door and window, can greatly reduce the opening and closing space of door and window.

[0003] In the door and window industry, pulley device is the hardware usually used by sliding door and window, and the design structure of pulley device determines the quality of sliding door and window to some extent. Since the existing rolling wheels usually adopt the design mode of pairing two by two, when the sliding door and window is impacted by external force, partial damage of the rolling wheels causes the sliding door and window to be unable to normally open or close. In addition, the sliding door and window with heavy weight usually adopts the mode of lower pulley structure, that is, the moving guide rail is arranged on the lower frame profile, and the rolling wheels move on the moving guide rail to achieve the effect of opening and closing of the door and window. However, since the door and window is not moved in a certain position for most of the time in the opening and closing state in the frame body, the lower frame profile will be deformed in the length direction and the width direction to different degrees after long-term use, thereby causing uneven stress of the pulley device, poor contact between the pulley and the moving guide rail, and easy skew, shaking, derailment and deformation of the rolling wheel unit after long-term use. Moreover, due to the processing precision, transportation and other factors, assembly error is caused between the door and window leaf and the door and window frame, and the door and window frame is also easy to be deformed after being embedded in the wall, and many factors will cause the door and window leaf to be difficult to accurately match the door and window frame, and the adaptability of the door and window leaf to the door and window frame is poor. UTILITY MODEL CONTENTS

[0004] Therefore, in order to solve the above problems, the utility model provides a pulley device, and the specific technical scheme is as follows:

[0005] A pulley device comprises:

[0006] A connecting support;

[0007] A rotating part comprising a rotating shaft rotatably connected to the connecting support, and two rotating seats respectively arranged at both ends of the rotating shaft;

[0008] A rolling wheel part comprising two groups of rolling wheel assemblies respectively arranged at both ends of the rotating shaft, each rolling wheel assembly comprising two rolling wheel units respectively arranged on both sides of the rotating seat, each rolling wheel unit comprising a rolling wheel seat rotatably connected to the rotating seat, and at least two rolling wheels rotatably connected to the rolling wheel seat.

[0009] The pulley device has the advantages that the roller units are arranged on both sides of the rotating seat, each rolling wheel on the roller units can roll independently, the roller units can continue to be used for a period of time when any rolling wheel is damaged, the rolling seat can rotate relative to the rotating seat when the lower frame profile is deformed and tilted in the length direction, the fan body can smoothly move along the moving guide rail, the rotating seat can rotate relative to the rotating shaft when the lower frame profile is deformed and tilted in the width direction, and the fan body can smoothly move along the moving guide rail.

[0010] Further, the connecting support includes a plate body and a first seat body arranged in the middle of the plate body, and the first seat body is provided with a mounting through hole matched with the rotating shaft;

[0011] The rotating seat includes a second seat body and a protruding shaft arranged on both sides of the second seat body, the second seat body is provided with a connecting through hole matched with the mounting through hole, and the rolling seat is rotationally connected to the protruding shaft.

[0012] Further, the middle of the rolling seat is provided with a connecting hole matched with the connecting through hole, and two rolling wheels are rotationally connected on both sides of the connecting hole.

[0013] Further, the plate body is provided with a clearance groove matched with the rolling wheel;

[0014] The connecting support further includes a dustproof unit arranged on both sides of the plate body, and the dustproof unit includes a dustproof block and a felt piece arranged on the dustproof block.

[0015] Further, the rolling seat is rotationally connected to the protruding shaft through a first copper sleeve, and the rotating seat is rotationally connected to the rotating shaft through a second copper sleeve.

[0016] Further, the rotating shaft is provided with a first assembly shaft end and a limiting shaft end, the limiting shaft end is provided with a limiting shaft shoulder matched with the second copper sleeve, and the first assembly shaft end is provided with a first limiting piece;

[0017] The shaft end of the protruding shaft is provided with a second limiting piece.

[0018] Further, the rolling wheel includes a rolling wheel shaft and a rolling wheel body rotationally connected to the rolling wheel shaft, and the rolling wheel shaft is provided with a second assembly shaft end connected to the rolling seat.

[0019] Further, the rotating shaft is rotationally connected to the connecting support through a third copper sleeve.

[0020] Further, the first assembly shaft end is provided with a first concave edge, the shaft end of the protruding shaft is provided with a second concave edge, the second assembly shaft end is provided with a third concave edge, and both sides of the connecting hole are respectively provided with a rotating through hole.

[0021] The assembling process of the pulley device is as follows:

[0022] S1, respectively, in the connecting through hole of two rotating seats, install the second copper sleeve;

[0023] S2, one rotating seat is inserted into the rotating shaft until the limiting shaft end touches the second copper sleeve, and then the rotating shaft is inserted through the installation through hole, and the other rotating seat is inserted from the first assembly shaft end;

[0024] S3, after the first limiting piece is sleeved on the first assembly shaft end, the first concave edge is punched to form a first limiting ring piece, and the first limiting ring piece limits the position of the rotating seat of the first assembly shaft end on the rotating shaft;

[0025] S4, the second assembly shaft end is inserted into the rotating through hole, the third concave edge is punched to form a third limiting ring piece, and the third limiting ring piece limits the position of the second assembly shaft end in the rotating through hole;

[0026] S5, the roller seat provided with the roller unit is respectively inserted into the four extension shafts, and the second limiting piece is sleeved on each second assembly shaft end, the second concave edge is punched to form a second limiting ring piece, and the second limiting ring piece limits the position of the roller seat on the extension shaft. BRIEF DESCRIPTION OF DRAWINGS

[0027] The present application can be further understood from the following description in conjunction with the accompanying drawings. The components in the drawings are not necessarily drawn to scale, but emphasis is placed on showing the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0028] Figure 1 is a structural schematic view of the pulley device according to an embodiment of the present application;

[0029] Figure 2 is a structural sectional view of the pulley device according to an embodiment of the present application Figure One .

[0030] Figure 3 is a structural sectional view of the pulley device according to an embodiment of the present application Figure Two .

[0031] BRIEF DESCRIPTION OF DRAWINGS

[0032] 1, connecting support; 2, rotating part; 3, roller part; 5, frame; 6, fan body;

[0033] 11, plate body; 12, first seat body; 13, dustproof unit;

[0034] 131, dustproof block; 132, felt piece;

[0035] 21, rotating shaft; 22, rotating seat;

[0036] 221 second seat body; 222 extending shaft;

[0037] 31 roller unit; 32 roller seat; 33 rolling wheel; 34 roller shaft; 35 roller body;

[0038] 41 first copper sleeve; 42 second copper sleeve; 43 third copper sleeve. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the utility model is further described in detail below in combination with its embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and do not limit the protection scope of the utility model.

[0040] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present. The terms "vertical", "horizontal", "left", "right", and the like as used herein are used for illustration only and are not intended to limit the present utility model to any particular orientation.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0042] The "first", "second" in the utility model do not represent the specific number and order, but only for the name of the distinction.

[0043] As shown in Figure 1 and Figure 2 , Figure 3 An embodiment of the utility model, a pulley device, comprising:

[0044] Connecting support 1;

[0045] Rotary part 2, including rotary shaft 21 rotatably connected on connecting support 1, and two rotary seats 22 respectively arranged at both ends of rotary shaft 21;

[0046] The roller component 3 comprises two groups of roller assemblies arranged at both ends of the rotating shaft 21 respectively, each roller assembly comprises two roller units 31 arranged at both sides of the rotating seat 22 respectively, each roller unit 31 comprises a roller seat 32 rotatably connected with the rotating seat 22, and at least two rolling wheels 33 rotatably connected with the roller seat 32.

[0047] The pulley device can be used for a certain period of time when any of the rolling wheels 33 is damaged, and the fan body can be smoothly moved along the moving guide rail when the lower frame profile is deformed and tilted in the length direction or in the width direction.

[0048] In one embodiment, the connecting support 1 comprises a plate body 11 and a first seat body 12 arranged at the middle of the plate body 11, the first seat body 12 is provided with a mounting through hole matched with the rotating shaft 21; the rotating seat 22 comprises a second seat body 221 and two extending shafts 222 arranged at both sides of the second seat body 221 respectively, the second seat body 221 is provided with a connecting through hole matched with the mounting through hole, and the roller seat 32 is rotatably connected with the extending shaft 222.

[0049] In one embodiment, the roller seat 32 is provided with a connecting hole matched with the connecting through hole at the middle of the roller seat 32, and the two rolling wheels 33 are rotatably connected at both sides of the connecting hole respectively. Specifically, the two rolling wheels 33 are symmetrically arranged at both sides of the connecting hole.

[0050] In one embodiment, the plate body 11 is provided with an empty slot matched with the rolling wheel 33; the connecting support 1 further comprises a dustproof unit 13 arranged at both sides of the plate body 11, the dustproof unit 13 comprises a dustproof block 131 and a felt piece 132 arranged on the dustproof block 131. Specifically, the felt piece 132 comprises a first felt brush in contact with the outer surface of the rolling wheel 33 and a second felt brush in contact with the moving guide rail. In this way, the overall height of the pulley device can be reduced by the empty slot, and the applicability of the pulley device can be improved; in addition, the rolling wheel 33 and the moving guide rail can be brushed respectively by the felt brushes, so as to avoid foreign matters from contacting the outer surface of the rolling wheel 33 and damaging the rolling wheel 33, thereby ensuring the service life of the rolling wheel 33.

[0051] In one of the embodiments, the roller seat 32 is rotatably connected to the extension shaft 222 through the first copper sleeve 41, and the second seat body 221 of the rotating seat 22 is rotatably connected to the rotating shaft 21 through the second copper sleeve 42. In this way, the rotation of the roller seat 32 relative to the extension shaft 222 is smooth through the copper sleeve, and the rotation of the second seat body 221 relative to the rotating shaft 21 is smooth. Meanwhile, the structure of the copper sleeve is compact, which facilitates the reduction of the overall size of the pulley device.

[0052] In one of the embodiments, the rotating shaft 21 is provided with a first assembly shaft end and a limiting shaft end, the limiting shaft end is provided with a limiting shaft shoulder matched with the second copper sleeve 42, and the first assembly shaft end is provided with a first limiting piece. The shaft end of the extension shaft 222 is provided with a second limiting piece. In this way, the axial positions of the parts are limited by the limiting pieces, the contact area is large, the structure is simple, and the structural stability of the pulley device is facilitated.

[0053] In one of the embodiments, the rolling wheel 33 comprises a roller shaft 34 and a roller body 35 rotatably connected to the roller shaft 34. The roller shaft 34 is provided with a second assembly shaft end connected to the roller seat 32. Specifically, the roller body 35 is rotatably connected to the roller shaft 34 through a bearing.

[0054] In one of the embodiments, the rotating shaft 21 is rotatably connected to the mounting through hole through a third copper sleeve 43. In this way, the rotating shaft 21 can rotate smoothly relative to the connecting support 1 through the copper sleeve. Meanwhile, the assembly area of the rotating shaft 21 and the first seat body 12 is reduced, and the processing cost is reduced.

[0055] In one of the embodiments, the first assembly shaft end is provided with a first concave edge, the shaft end of the extension shaft 222 is provided with a second concave edge, the second assembly shaft end is provided with a third concave edge, and the two sides of the connecting hole are respectively provided with rotating through holes.

[0056] The assembly process of the pulley device is as follows:

[0057] S1, the second copper sleeve 42 is respectively assembled in the connecting through hole of the two rotating seats 22;

[0058] S2, one rotating seat 22 is inserted into the rotating shaft 21 until the limiting shaft end is in contact with the second copper sleeve 42, and then the rotating shaft 21 is inserted through the mounting through hole and the other rotating seat 22 is inserted from the first assembly shaft end;

[0059] S3, after the first limiting piece is sleeved on the first assembly shaft end, the first concave edge is stamped into a first limiting ring piece, and the first limiting ring piece limits the position of the rotating seat 22 of the first assembly shaft end on the rotating shaft 21;

[0060] S4, the second assembly shaft end is inserted into the rotating through hole, the third concave edge is stamped into a third limiting ring piece, and the third limiting ring piece limits the position of the second assembly shaft end in the rotating through hole;

[0061] S5, the roller seat 32 equipped with the roller unit 31 is respectively inserted into the four extension shafts 222, and the second limiting sheet is sleeved at each second assembly shaft end, the second concave edge is punched into the second limiting ring sheet, and the second limiting ring sheet limits the position of the roller seat 32 on the extension shaft 222.

[0062] In this way, by punching the concave edge into the limiting ring sheet, the structure is stable and reliable, and the possibility of screw loosening does not occur relative to screw locking, so that the pulley device can maintain good moving performance in long-term use.

[0063] The technical features of the above-described embodiments can be combined arbitrarily, and for the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the description.

[0064] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the utility model patent. It should be pointed out that for ordinary skilled persons in the art, on the premise of not departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A pulley arrangement, characterised in that, The utility model relates to a kind of rotating device, including: Connecting support (1); Rotary component (2), including rotary shaft (21) rotationally connected on the connecting support (1), and two rotary seats (22) respectively arranged at both ends of rotary shaft (21); Roller component (3), including two groups of roller assemblies respectively arranged at both ends of the rotary shaft (21), the roller assembly includes two roller units (31) respectively arranged on both sides of the rotary seat (22), and the roller unit (31) includes roller seat (32) rotationally connected with the rotary seat (22), and at least two rolling wheels (33) rotationally connected on roller seat (32).

2. A pulley device according to claim 1, wherein The connecting support (1) includes a plate body (11) and a first seat body (12) disposed in the middle of the plate body (11), the first seat body (12) is provided with a mounting through hole matched with the rotary shaft (21); The rotary seat (22) includes a second seat body (221) and a protruding shaft (222) disposed on both sides of the second seat body (221), the second seat body (221) is provided with a connecting through hole matched with the mounting through hole, and the roller seat (32) is rotationally connected on the protruding shaft (222).

3. A pulley arrangement according to claim 2, wherein The middle of the roller seat (32) is provided with a connecting hole matched with the connecting through hole, and two rolling wheels (33) are rotationally connected on both sides of the connecting hole.

4. A pulley device according to claim 2, wherein The plate body (11) is provided with a clearance groove matched with the rolling wheel (33); The connecting support (1) further includes a dustproof unit (13) disposed on both sides of the plate body (11), and the dustproof unit (13) includes a dustproof block (131) and a felt piece (132) disposed on the dustproof block (131).

5. A pulley device according to claim 3, wherein The roller seat (32) is rotationally connected to the protruding shaft (222) through a first copper sleeve (41); The rotary seat (22) is rotationally connected on the rotary shaft (21) through a second copper sleeve (42).

6. A pulley arrangement according to claim 5, wherein The rotary shaft (21) is provided with a first assembly shaft end and a limiting shaft end, the limiting shaft end is provided with a limiting shaft shoulder matched with the second copper sleeve (42), and the first assembly shaft end is provided with a first limiting piece; The shaft end of the protruding shaft (222) is provided with a second limiting piece.

7. A pulley arrangement according to claim 6, wherein The rolling wheel (33) includes a roller shaft (34) and a roller body (35) rotationally connected on the roller shaft (34); The roller shaft (34) is provided with a second assembly shaft end for connecting on the roller seat.

8. A pulley device according to claim 7, wherein The first assembly shaft end is provided with a first concave edge, the shaft end of the protruding shaft is provided with a second concave edge, the second assembly shaft end is provided with a third concave edge, and both sides of the connecting hole are respectively provided with a rotating through hole.

9. A pulley assembly as defined in claim 5, wherein, The rotary shaft (21) is rotationally connected on the connecting support (1) through a third copper sleeve (43).

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