Pulley device and pulley system
By adopting a double bearing rotating structure with base, support bearing and rotating bearing in the pulley device, the problem of insufficient load-bearing capacity of the existing pulley device is solved, and more uniform stress and stronger load-bearing capacity are achieved, and sliding doors and windows are improved. sliding performance.
Patent Information
- Application Number
- CN202420802809.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-17
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-04-17
AI Technical Summary
The bearing or shaft of the existing pulley device is insufficient, resulting in frequent lags in sliding doors and windows when used.
Design a pulley device, adopting a double-bearing rotating structure of base, support bearing and rotating bearing, by setting the rotating bearing and support bearing horizontal sleeve on the connecting shaft and setting the support bearing inside the base, the inner part of the bearing is increased The ring size and the shaft diameter of the connecting shaft improve load bearing capacity.
It effectively improves the load-bearing capacity of the pulley device, enhances its stability and durability, and makes sliding doors and windows smoother and more stable when sliding.
Smart Images
Figure CN222478445U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of door and window accessories, in particular to a pulley device and a pulley system. Background Art
[0002] In the door and window system, sliding doors and windows are becoming more and more popular among users due to their many advantages such as convenient opening and closing, small space occupation, and easy installation. Sliding doors and windows usually include profiles, slide rails and pulleys. The pulleys are arranged at the bottom of the profiles, and the slide rails are arranged on the ground or wall. The profiles are interactively arranged in the slide rails through the pulleys. By pushing and pulling the profiles to make the pulleys slide in the slide rails, the sliding doors and windows can be opened and closed. Due to the heavy weight of the profiles and the limited load-bearing capacity of a single bearing, jamming often occurs during use.
[0003] Currently, pulleys with stacked bearings have also appeared on the market. That is, the load-bearing capacity of the bearing is increased by stacking two bearings to form a three-layer structure. Under the premise of ensuring that the outer diameter of the bearing remains unchanged, the inner diameter of the bearing will be very small, and only very small diameter shafts can be assembled. The weight of the push-pull profile is transferred to the small diameter shaft through the bearing, which can easily cause the small diameter shaft to break or be damaged.
[0004] Therefore, it is very important for those skilled in the art to design a pulley device and a pulley system with more uniform force and stronger load-bearing capacity. Utility Model Content
[0005] The technical problem to be solved by the embodiments of the utility model is to provide a pulley device and a pulley system with more uniform force and stronger load-bearing capacity, so as to solve the problem of insufficient load-bearing capacity of bearings or shafts in the prior art.
[0006] The utility model discloses a pulley device, which comprises:
[0007] Pedestal;
[0008] A support bearing is installed in the base;
[0009] A connecting shaft is transversely arranged in the inner ring of the supporting bearing;
[0010] A rotating bearing is sleeved on the connecting shaft and arranged parallel to the supporting bearing;
[0011] The outer ring of the support bearing is connected to the base, the inner ring of the support bearing can rotate in the same direction as the inner ring of the rotating bearing through the connecting shaft, and the outer ring of the rotating bearing is used to connect an external component.
[0012] Optionally, the outer sleeve of the rotating bearing is provided with a rim for connecting to an external track; and the outer ring profile of the rim is adapted to the outer track profile.
[0013] Optionally, central axes of the rotating bearing and the supporting bearing coincide with each other.
[0014] Optionally, the rotating bearing and the supporting bearing are respectively provided with a first through hole and a second through hole along the center axis direction, and the connecting shaft is provided through the first through hole and the second through hole.
[0015] Optionally, a receiving groove for receiving the support bearing is provided in the base, and the outer ring of the support bearing is interference fit with the inner wall of the receiving groove.
[0016] Optionally, a third through hole is provided in the accommodating groove, and the connecting shaft passes through the first through hole, the second through hole and the third through hole in sequence.
[0017] Optionally, there is an interference fit between the connecting shaft and the first through hole, the second through hole and the third through hole.
[0018] Optionally, it also includes a side plate, which is connected to the base through a fixed column, the rotating bearing is arranged between the side plate and the base, and a fourth through hole is arranged on the side plate, one end of the connecting shaft is connected to the fourth through hole, and the other end of the connecting shaft passes through the first through hole, the second through hole and the third through hole in sequence.
[0019] In order to solve the problems existing in the prior art, the utility model further provides a pulley device, the solution of which is to include:
[0020] Pedestal;
[0021] A support bearing is mounted in the base.
[0022] A connecting shaft, which traverses the support bearing;
[0023] A rotating bearing is sleeved on the connecting shaft and arranged in parallel with the supporting bearing, and a rubber ring for connecting an external component is sleeved on the outside of the rotating bearing;
[0024] Wherein, the inner ring of the support bearing can rotate in the same direction as the inner ring of the rotating bearing through the connecting shaft.
[0025] In order to solve the problems existing in the prior art, the utility model also provides a pulley system, which includes a connecting shaft, a first rotating bearing, a first support bearing, a second support bearing, a second rotating bearing, a base, a first side plate and a second side plate, and the connecting shaft passes through the first side plate, the first rotating bearing, the first support bearing, the base, the second support bearing, the second rotating bearing and the second side plate in sequence.
[0026] Compared with the prior art, the beneficial effect of the pulley device provided by the embodiment of the utility model is that: by designing a pulley device, by setting a base and a double-bearing rotating structure having a rotating bearing and a supporting bearing, and by horizontally sleeved the rotating bearing and the supporting bearing on the connecting shaft, and setting the supporting bearing inside the base, not only the rolling of the pulley device is made smoother and more natural, but it can also be used in an extremely narrow space environment to maximize the inner ring size of the bearing and the shaft diameter of the connecting shaft, thereby effectively improving the load-bearing capacity of the pulley device, and further enhancing the stability and durability of the pulley device. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] The technical solution of the utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0028] In the figure:
[0029] Figure 1 This is a schematic diagram of the structure of a pulley device provided by an embodiment of the utility model. Figure 1 ;
[0030] Figure 2 It is a structural schematic diagram of a rotary bearing provided by an embodiment of the utility model;
[0031] Figure 3 It is a schematic diagram of the structure of the rotating bearing and the supporting bearing provided in the embodiment of the utility model;
[0032] Figure 4 It is an exploded diagram of a pulley device provided by an embodiment of the utility model;
[0033] Figure 5 This is a schematic diagram of the structure of a pulley device provided by an embodiment of the utility model. Figure 2 ;
[0034] Figure 6 This is a schematic diagram of the structure of another pulley device provided by the embodiment of the utility model. Figure 1 ;
[0035] Figure 7 This is a schematic diagram of the structure of another pulley device provided by the embodiment of the utility model. Figure 2 ;
[0036] Figure 8 It is an exploded diagram of a pulley system provided in an embodiment of the utility model. DETAILED DESCRIPTION
[0037] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Now, in conjunction with the accompanying drawings, a preferred embodiment of the present utility model is described in detail.
[0038] like Figures 1 to 5 As shown, the utility model provides a specific embodiment of a pulley device.
[0039] A pulley device, reference Figure 1 The pulley device includes a connecting shaft 1, a rotating bearing 2, a supporting bearing 3 and a base 4. The rotating bearing 2 is sleeved on the connecting shaft 1 and is located on one side of the base 4. The supporting bearing 3 is sleeved on the connecting shaft 1 and is located inside the base 4. The outer ring of the supporting bearing 3 is connected to the base 4. The inner ring of the supporting bearing 3 can rotate in the same direction as the inner ring of the rotating bearing 2 through the connecting shaft 1. The outer ring of the rotating bearing 2 is used to connect with external components.
[0040] Specifically, refer to Figure 1 The rotating bearing 2 is sleeved on the connecting shaft 1, and the inner ring of the rotating bearing 2 is connected to the connecting shaft 1. The inner ring of the rotating bearing 2 and the connecting shaft 1 can be fixedly connected, or can be connected by other means such as interference fit, so as to be slidably engaged with the external track; the supporting bearing 3 is sleeved on the connecting shaft 1 and is located on the outside of the rotating bearing 2. The inner ring of the supporting bearing 3 is connected to the connecting shaft 1. The inner ring of the supporting bearing 3 and the connecting shaft 1 can be fixedly connected, or can be connected by other means such as interference fit, so as to increase the sliding flexibility and load-bearing capacity of the pulley device; wherein, when the rotating bearing 2 slides on the external track, the inner ring of the rotating bearing 2 can make the connecting shaft 1 rotate in the same direction, thereby driving the inner ring of the supporting bearing 3 to move in the same direction.
[0041] Furthermore, the rotating bearing 2 is arranged on one side of the base 4. Since it is used to connect with the external track, the external track can effectively limit the rotating bearing 2; the supporting bearing 3 is arranged in the base 4. On the one hand, the base 4 can limit the supporting bearing 3 to prevent shaking on the connecting shaft, thereby improving the stability of the pulley device; on the other hand, the base 4 can share part of the pressure to reduce the force on the supporting bearing, thereby further increasing the load-bearing capacity of the pulley device under the premise of overall small size.
[0042] A single pulley structure is generally used in the prior art. Due to the heavy weight of the profile and the limited load-bearing capacity of the single pulley structure, jamming often occurs during use. To solve this problem, some stacked three-layer bearing structures have appeared on the market, that is, two pulleys are stacked to increase the load-bearing capacity of the device. However, while the three-layer bearing structure ensures that the outer diameter of the bearing remains unchanged, the inner diameter of the bearing will be very small, and only a connecting shaft with a very small diameter can be assembled. If the diameter of the connecting shaft is too small, it is easy to break and be damaged under long-term pressure.
[0043] In this embodiment, a pulley device is designed, which provides a base and a double-bearing rotating structure with a rotating bearing and a supporting bearing, and horizontally sleeves the rotating bearing and the supporting bearing on the connecting shaft, and sets the supporting bearing inside the base. This not only makes the rolling of the pulley device smoother and more natural, but can also be used in extremely narrow spaces to maximize the inner ring size of the bearing and the shaft diameter of the connecting shaft, thereby effectively improving the load-bearing capacity of the pulley device, and further enhancing the stability and durability of the pulley device.
[0044] In one embodiment, reference Figure 2 The outer sleeve of the rotating bearing 2 is provided with a wheel rim 21, and the outer ring profile of the wheel rim 21 is adapted to the outer track profile.
[0045] Specifically, refer to Figure 1 and Figure 2 The wheel rim 21 is sleeved on the outside of the rotating bearing 2 to connect the rotating bearing 2 and the external track. The outer surface of the wheel rim 21 is provided with a groove 211 for sliding engagement with the external track. When installing the pulley device, it is only necessary to slide the track on the external door and window and the track on the external door frame to the upper and lower sides of the groove 211 respectively. When the user pushes and pulls the door and window, the wheel rim 21 and the rotating bearing 2 can be driven to rotate along the track on the external door and window and the track on the external door frame, thereby driving the connecting shaft 1 to rotate, thereby driving the supporting bearing 3 to rotate.
[0046] Among them, reference Figure 1 By supporting the external doors and windows with strong support by the support bearing 3, the force exerted by the external doors and windows on the rotating bearing 2 can be effectively reduced. In addition, the load-bearing capacity of the rotating bearing 2 itself can effectively reduce the pressure on the connecting shaft 1, thereby making the sliding doors and windows smoother and more stable when sliding.
[0047] In one embodiment, reference Figure 1 and Figure 3 The central axes of the rotating bearing 2 and the supporting bearing 3 coincide with each other, and the rotating bearing 2 and the supporting bearing 3 are respectively provided with a first through hole 22 and a second through hole 31 along the central axis direction, and the connecting shaft 1 is provided through the first through hole 22 and the second through hole 31.
[0048] Specifically, refer to Figure 1 and Figure 3 By aligning the central axes of the rotating bearing 2 and the supporting bearing 3, and arranging the first through hole 22 and the second through hole 31 on the central axis, when the connecting shaft 1 passes through the first through hole 22 and the second through hole 31, it will be on the central axis of the rotating bearing 2 and the supporting bearing 3, which can make the rotating bearing 2 and the supporting bearing 3 bear force more evenly, thereby making the sliding door and window smoother and more stable when sliding.
[0049] In one embodiment, reference Figure 4 and Figure 5 A receiving groove 41 is provided in the base 4 , and the supporting bearing 3 is provided in the receiving groove 41 .
[0050] Specifically, refer to Figure 4 and Figure 5 The support bearing 3 is installed in the accommodating groove 41, and the outer ring of the support bearing 3 is fixed to the accommodating groove 41. The fixing method between the outer ring of the support bearing 3 and the accommodating groove 41 can be an interference fit, or other fixing methods. Compared with the scheme of riveting the inner ring of the bearing and the base 4, by fixing the outer ring of the support bearing 3 and the base 4, the contact surface between the support bearing 3 and the base 4 can be increased, so that the force on the support bearing 3 is more uniform and stable, which can effectively increase the service life of the pulley device.
[0051] In one embodiment, reference Figure 4 A third through hole 42 is provided in the accommodating groove 41 , and the connecting shaft 1 passes through the first through hole 22 , the second through hole 31 and the third through hole 42 in sequence.
[0052] Specifically, refer to Figure 4 The accommodating groove 41 is arranged at the center position of the side surface of the base 4, and a third through hole 42 is arranged at the center position of the notch of the accommodating groove 41, and the third through hole 42 is on the same horizontal line as the first through hole 22 and the second through hole 31, and the connecting shaft 1 passes through the first through hole 22, the second through hole 31 and the third through hole 42 in sequence. This arrangement can make the pulley device more evenly and stably stressed.
[0053] In one embodiment, there is interference fit between the connecting shaft 1 and the first through hole 22 , between the connecting shaft 1 and the second through hole 31 , and between the connecting shaft 1 and the third through hole 42 .
[0054] In one embodiment, reference Figure 4 and Figure 5 The pulley device also includes a side plate 5, which is arranged on the side of the rotating bearing 2 away from the supporting bearing 3 and is connected to the base 4 through a fixing column 6. A fourth through hole 61 is arranged on the side plate 5, one end of the connecting shaft 1 is connected to the fourth through hole 61, and the other end of the connecting shaft 1 is arranged to pass through the first through hole 22, the second through hole 31 and the third through hole 42 in sequence.
[0055] Specifically, refer to Figure 4 and Figure 5A plurality of fixing columns 6 are arranged between the side plate 5 and the base 4 for supporting and fixing, the supporting bearing 3 is arranged in the base 4, the rotating bearing 2 is arranged between the side plate 5 and the base 4, and the first through hole 22, the second through hole 31, the third through hole 42 and the fourth through hole 61 are all on the same horizontal line, and the connecting shaft 1 passes through the fourth through hole 61, the first through hole 22, the second through hole 31 and the third through hole 42 in sequence; when installing the pulley device, it is only necessary to slide the rotating bearing 2 into the track on the external door and window and the track on the external door frame.
[0056] like Figure 6 and Figure 7 As shown, the utility model also provides a specific embodiment of a pulley device.
[0057] A pulley device, reference Figure 6 and Figure 7 The pulley device includes a connecting shaft 10, a rotating bearing 20 and a supporting bearing 30. The rotating bearing 20 is sleeved on the connecting shaft 10, and a rubber ring is sleeved on the outside of the rotating bearing 20; the supporting bearing 30 is sleeved on the connecting shaft 10 and is located on the outside of the rotating bearing 20; wherein the inner ring of the supporting bearing 30 can rotate in the same direction as the inner ring of the rotating bearing 20 through the connecting shaft 10.
[0058] Specifically, refer to Figure 6 and Figure 7 The pulley device also includes a base 40 and a side plate 50. The support bearing 30 is arranged in the base 40, and the rotating bearing 20 is arranged between the side plate 50 and the base 40. When the pulley device is installed, the rotating bearing 20 is slidably connected to the track on the external door and window and the track on the external door frame. When the user pushes and pulls the door and window, the rotating bearing 20 can be driven to rotate along the track on the external door and window and the track on the external door frame, thereby driving the connecting shaft 10 to rotate, thereby driving the support bearing 30 to rotate.
[0059] like Figure 8 As shown, the utility model also provides a specific embodiment of a pulley device.
[0060] A pulley device, reference Figure 8 The pulley device includes a connecting shaft 100, a first rotating bearing 201, a first supporting bearing 301, a second supporting bearing 302, a second rotating bearing 202, a base 400, a first side plate 501 and a second side plate 502, and the connecting shaft 1 passes through the first side plate 501, the first rotating bearing 201, the first supporting bearing 301, the base 400, the second supporting bearing 302, the second rotating bearing 202 and the second side plate 502 in sequence, wherein the base 400 and the first side plate 501 and the second side plate 502 are all connected by a fixing column 600.
[0061] Specifically, refer to Figure 8 The first rotating bearing 201 and the second rotating bearing 202 are both provided with wheel sleeves on the outside, and the outer contour of the wheel sleeves is adapted to the contour of the external slide rail. When the pulley device is installed, the first rotating bearing 201 and the second rotating bearing 202 are slidably connected to the track on the external door and window and the track on the external door frame, and the wheel sleeves outside the first rotating bearing 201 and the second rotating bearing 202 are directly in contact with the track on the external door and window and the track on the external door frame. When the user pushes and pulls the door and window, the first rotating bearing 201 and the second rotating bearing 202 can be driven to rotate along the track on the external door and window and the track on the external door frame, thereby driving the connecting shaft 1 to rotate, thereby driving the first support bearing 301 and the second support bearing 302 to rotate.
[0062] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit it. For those skilled in the art, the technical solutions described in the above embodiments can be modified, or some of the technical features therein can be replaced by equivalents; and all these modifications and replacements should fall within the scope of protection of the claims attached to the present utility model.
Claims
1. A pulley device, characterized in that: include: Pedestal; A support bearing is installed in the base; A connecting shaft is transversely arranged in the inner ring of the supporting bearing; A rotating bearing is sleeved on the connecting shaft and arranged parallel to the supporting bearing; The outer ring of the support bearing is connected to the base, the inner ring of the support bearing can rotate in the same direction as the inner ring of the rotating bearing through the connecting shaft, and the outer ring of the rotating bearing is used to connect an external component.
2. The pulley device according to claim 1, characterized in that: The outer sleeve of the rotating bearing is provided with a wheel rim for connecting with the outer track; and the outer ring profile of the wheel rim is adapted to the outer track profile.
3. The pulley device according to claim 1, characterized in that: The central axes of the rotary bearing and the support bearing coincide with each other.
4. The pulley device according to claim 3, characterized in that: The rotating bearing and the supporting bearing are respectively provided with a first through hole and a second through hole along the central axis direction, and the connecting shaft is provided through the first through hole and the second through hole.
5. The pulley device according to claim 4, characterized in that: The base is provided with a receiving groove for receiving the support bearing, and the outer ring of the support bearing is interference fit with the inner wall of the receiving groove.
6. The pulley device according to claim 5, characterized in that: A third through hole is disposed in the accommodating groove, and the connecting shaft passes through the first through hole, the second through hole and the third through hole in sequence.
7. The pulley device according to claim 6, characterized in that: The connecting shaft is interference fit with the first through hole, the second through hole and the third through hole.
8. The pulley device according to claim 6, characterized in that: It also includes a side plate, which is connected to the base through a fixing column, the rotating bearing is arranged between the side plate and the base, and a fourth through hole is arranged on the side plate, one end of the connecting shaft is connected to the fourth through hole, and the other end of the connecting shaft passes through the first through hole, the second through hole and the third through hole in sequence.
9. A pulley device, characterized in that: include: Pedestal; A support bearing is mounted in the base. A connecting shaft, which passes through the support bearing; A rotating bearing is sleeved on the connecting shaft and arranged in parallel with the supporting bearing, and a rubber ring for connecting an external component is sleeved on the outside of the rotating bearing; Wherein, the inner ring of the support bearing can rotate in the same direction as the inner ring of the rotating bearing through the connecting shaft.
10. A pulley system, characterized in that: It includes a connecting shaft, a first rotating bearing, a first support bearing, a second support bearing, a second rotating bearing, a base, a first side plate and a second side plate. The connecting shaft passes through the first side plate, the first rotating bearing, the first support bearing, the base, the second support bearing, the second rotating bearing and the second side plate in sequence.