Pulley assembly for extremely-narrow sliding door and window and door and window

Abstract

The utility model relates to the technical field of sliding doors and windows, in particular to a pulley assembly for an extremely narrow sliding door and window and the door and window. The pulley assembly for the extremely narrow sliding door and window comprises a base and a pulley block, the pulley block comprises a first pulley and a second pulley, and the first pulley and the second pulley are rotationally arranged on the base; a first annular groove is formed in the periphery of the first pulley, a second annular groove is formed in the periphery of the second pulley, and the first annular groove and the second annular groove are used for being matched with a rail; the depth of the second annular groove is larger than that of the first annular groove, so that a first limiting arm and a second limiting arm which are oppositely arranged are formed on the second pulley; wherein the first pulley is a bearing. The first annular groove is better attached to the track, abrasion is reduced, and the second annular groove prevents the pulley block from being disengaged from the track.

Description

Technical Field

[0001] The utility model relates to the technical field of sliding doors and windows, in particular to a pulley assembly and a door and window for extremely narrow sliding doors and windows. Background Art

[0002] The smoothness and convenience of sliding doors and windows make them widely used in life. During use, a pulley assembly is fixedly arranged below the door and window, and the pulleys of the pulley assembly cooperate with the track to complete the pushing and pulling of the sliding door and window.

[0003] However, the existing pulleys have a poor fit with the track, are prone to wear during long-term pushing and pulling use, and when the pushing and pulling speed is relatively fast or the pushing and pulling force direction is slightly inclined, the pulley assembly is very easy to disengage from the track, resulting in the failure of the sliding door and window. Summary of the Utility Model

[0004] The technical problem to be solved in the embodiment of the utility model is to provide a pulley assembly and a door and window for extremely narrow sliding doors and windows, so as to solve the problems in the prior art that the fit between the pulley and the track is poor, it is easy to wear during long-term pushing and pulling use, and even when the pushing and pulling speed is relatively fast or the pushing and pulling force direction is slightly inclined, the pulley assembly is very easy to disengage from the track, resulting in the failure of the sliding door and window.

[0005] The utility model discloses a pulley assembly for extremely narrow sliding doors and windows, comprising: a base and a pulley group, the pulley group includes a first pulley and a second pulley, and the first pulley and the second pulley are rotatably arranged on the base; a first annular groove is formed on the outer periphery of the first pulley, and a second annular groove is formed on the outer periphery of the second pulley, and the first annular groove and the second annular groove are used for cooperating with the track; the depth of the second annular groove is greater than the depth of the first annular groove, so that a first limiting arm and a second limiting arm are formed on the second pulley and arranged oppositely; wherein, the first pulley is a bearing.

[0006] Optionally, a first installation groove and a second installation groove are formed on the base, a first installation shaft is arranged on the first installation groove, the first pulley is arranged on the first installation shaft and is rotatably connected with the base through the first installation shaft; a second installation shaft is arranged on the second installation groove, the second pulley is arranged on the second installation shaft and is rotatably connected with the base through the second installation shaft.

[0007] Optionally, part of the first pulley and part of the second pulley protrude from the base.

[0008] Optionally, the protruding height of the first pulley on the base is h1, and the protruding height of the second pulley on the base is h2; wherein, h2 > h1.

[0009] Optionally, first abutting members are provided on opposite side walls inside the first installation groove, and the first installation shaft is disposed between the two first abutting members; second abutting members are provided on opposite side walls inside the second installation groove, and the second installation shaft is disposed between the two second abutting members.

[0010] Optionally, the number of the first pulleys is set to two, and the second pulley is disposed between the two first pulleys.

[0011] Optionally, a plurality of pulley groups are provided, and the plurality of pulley groups are arranged in parallel.

[0012] Optionally, the first pulley and the second pulley are distributed on the base along the length direction of the base and are collinearly arranged on the base.

[0013] Optionally, the second pulley is a bearing.

[0014] The present utility model also discloses a door and window, including the pulley assembly for ultra-narrow sliding doors and windows as described above.

[0015] Compared with the prior art, the beneficial effects of the pulley assembly for ultra-narrow sliding doors and windows and the door and window provided by the embodiments of the present utility model are as follows: The base is used to be disposed on the door and window to achieve a stable connection between the pulley assembly for ultra-narrow sliding doors and windows and the door and window. During the use of the pulley assembly for ultra-narrow sliding doors and windows, the first pulley and the second pulley of the pulley group are used to be disposed on the track and match with the track to achieve the sliding of the sliding door and window on the track; wherein, a first annular groove is formed on the outer circumference of the first pulley, and a second annular groove is formed on the outer circumference of the second pulley. The first annular groove and the second annular groove are used to cooperate with the track. The depth of the second annular groove is set to be greater than the depth of the first annular groove, which can ensure that while the first annular groove fits with the track, the first limiting arm and the second limiting arm formed on the second pulley and arranged oppositely can form a limit on the two side walls of the track. During the process of pushing the door and window, the first annular groove can achieve better fitting with the track, reducing wear, and the second annular groove can prevent the pulley group from disengaging from the track. Under the interaction of the first pulley and the second pulley, the practicability and smoothness of the sliding door and window are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The technical solutions of the present utility model will be further described in detail below in conjunction with the drawings. In the drawings:

[0017] Figure 1 is an overall structural schematic diagram of the pulley assembly for ultra-narrow sliding doors and windows provided by the embodiment of the present utility model;

[0018] Figure 2 is a top view of the pulley assembly for ultra-narrow sliding doors and windows provided by the embodiment of the present utility model;

[0019] Figure 3 is Figure 2 the A-A sectional view of;

[0020] Figure 4 is the schematic diagram of the base structure provided by the embodiment of the present utility model;

[0021] Figure 5 is Figure 3 the partial enlarged view at B of;

[0022] Figure 6 is the schematic diagram of the structure of the first pulley provided by the embodiment of the present utility model;

[0023] Figure 7 is the schematic diagram of the structure of the second pulley provided by the embodiment of the present utility model.

[0024] The reference numerals in the figure are as follows:

[0025] 10, base; 101, first installation groove; 102, second installation groove; 110, first installation shaft; 111, first abutting member; 120, second installation shaft; 121, second abutting member; 20, pulley set; 210, first pulley; 201, first annular groove; 2101, first installation hole; 220, second pulley; 202, second annular groove; 221, first limiting arm; 222, second limiting arm; 2201, second installation hole. Specific Embodiments

[0026] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Now, with reference to the accompanying drawings, the preferred embodiments of the present utility model will be described in detail.

[0027] The embodiment of the present utility model provides a pulley assembly for an extremely narrow sliding window and door, as Figures 1 to 7 shown, including a base 10 and a pulley set 20. The pulley set 20 includes a first pulley 210 and a second pulley 220. The first pulley 210 and the second pulley 220 are both rotatably arranged on the base 10. A first annular groove 201 is formed on the outer periphery of the first pulley 210, and a second annular groove 202 is formed on the outer periphery of the second pulley 220. The first annular groove 201 and the second annular groove 202 are used for cooperating with a track. The depth of the second annular groove 202 is greater than the depth of the first annular groove 201, so that opposite first limiting arms 221 and second limiting arms 222 are formed on the second pulley 220. Among them, the first pulley 210 is a bearing.

[0028] The base 10 of this embodiment is used to be installed on a sliding window or door to achieve a stable connection between the pulley assembly for an extremely narrow sliding window or door and the sliding window or door. During the use of the pulley assembly for an extremely narrow sliding window or door, the first pulley 210 and the second pulley 220 of the pulley group 20 are used to be installed on a track and match with the track to achieve the sliding of the sliding window or door. Specifically, a first annular groove 201 is formed on the outer periphery of the first pulley 210, and a second annular groove 202 is formed on the outer periphery of the second pulley 220. The first annular groove 201 and the second annular groove 202 are used to cooperate with the track. By setting the depth of the second annular groove 202 to be greater than the depth of the first annular groove 201, it can ensure that while the first annular groove 201 fits with the track, the first limiting arm 221 and the second limiting arm 222 which are oppositely arranged on the second pulley 220 can form a limit on both sides of the track. During the process of pushing the window or door, the first annular groove 201 can achieve better fitting with the track, reducing wear, and the second annular groove 202 can prevent the pulley group 20 from detaching from the track. This improves the practicability and smoothness of the sliding window or door.

[0029] Among them, the friction coefficient and rotational accuracy of the bearing are high, which can reduce the self - wear of the second pulley 220 and further improve the use effect and service life when the pulley assembly for an extremely narrow sliding window or door is applied.

[0030] Refer to Figure 1 , the bottom surface of the base 10 is used to be connected to the window or door.

[0031] As a preferred solution of this embodiment, refer to Figure 2 , Figure 4 , Figure 6 and Figure 7 , a first installation groove 101 and a second installation groove 102 are formed on the base 10. A first installation shaft 110 is arranged on the first installation groove 101, and the first pulley 210 is installed on the first installation shaft 110 and is rotationally connected to the base 10 through the first installation shaft 110; a second installation shaft 120 is arranged on the second installation groove 102, and the second pulley is installed on the second installation shaft 120 and is rotationally connected to the base 10 through the second installation shaft 120.

[0032] Here, a structural example of the base 10 is given. The first mounting groove 101 and the second mounting groove 102 formed on the base 10 provide mounting spaces for the first pulley 210 and the second pulley 220 respectively. At the same time, the first mounting shaft 110 is provided on the first mounting groove 101 to rotatably mount the first pulley 210 on the base 10. Specifically, a first mounting hole 2101 is formed on the first pulley 210, and the first mounting hole 2101 passes through the first mounting shaft 110 so that the first pulley 210 is rotatably arranged on the first mounting shaft 110; the second mounting shaft 120 is provided on the second mounting groove 102 to rotatably mount the second pulley 220 on the base 10. Specifically, a second mounting hole 2201 is formed on the second pulley 220, and the second mounting hole 2201 passes through the second mounting shaft 120 so that the second pulley 220 is rotatably arranged on the second mounting shaft 120.

[0033] As a preferred solution of this embodiment, refer to Figure 3 and Figure 5 , part of the first pulley 210 and part of the second pulley 220 protrude from the base 10.

[0034] Among them, a structural example of a pulley assembly for extremely narrow sliding doors and windows is given in this embodiment. The parts of the first pulley 210 and the second pulley 220 protruding from the base 10 are used to realize the mating connection with the track, ensuring the stable setting of the first pulley 210 and the second pulley 220 on the base 10 while also enabling a sliding connection with the track. The height of the protruding parts of the above-mentioned first pulley 210 and second pulley 220 on the base 10 needs to ensure that the first annular groove 201 contacts the track, and at the same time, the first limiting arm 221 and the second limiting arm 222 on both sides of the second annular groove 202 form a limit on the two side walls of the track, and can be adjusted adaptively according to specific use environments such as the track, and no specific limitation is made here.

[0035] As a preferred solution of this embodiment, refer to Figure 5 , the protruding height of the first pulley 210 on the base 10 is h1, and the protruding height of the second pulley 220 on the base 10 is h2; among them, h2 > h1.

[0036] When the first pulley 210 and the second pulley 220 are respectively arranged on the track through the first annular groove 201 and the second annular groove 202, setting h2 > h1 can make the outer peripheral surfaces of the first limiting arm 221 and the second limiting arm 222 of the second pulley 220 contact the bottom of the track. During long-term use, the outer peripheral surface of the first pulley 210 will not contact the bottom of the track. Therefore, the wear of the first pulley 210 is reduced, the fitting effect of the first pulley 210 on the track is ensured, and the service life of the pulley assembly for extremely narrow sliding doors and windows is improved.

[0037] As a preferred solution of this embodiment, refer to Figure 4 On opposite side walls within the first mounting groove 101, first abutting members 111 are provided, and the first mounting shaft 110 is disposed between the two first abutting members 111; on opposite side walls within the second mounting groove 102, second abutting members 121 are provided, and the second mounting shaft 120 is disposed between the two second abutting members 121.

[0038] Among them, in order to ensure the setting stability of the first pulley 210 on the first mounting shaft 110 and the setting stability of the second pulley 220 on the second mounting shaft 120, and further ensure the firmness of the first pulley 210 and the second pulley 220 on the base 10. Specifically, on opposite side walls within the first mounting groove 101, first abutting members 111 are provided, and the two first abutting members 111 can form a restriction on the first pulley 210 to prevent the first pulley 210 from wobbling left and right on the first mounting shaft 110; at the same time, on opposite side walls within the second mounting groove 102, second abutting members 121 are provided, and the two second abutting members 121 can form a restriction on the second pulley 220 to prevent the second pulley 220 from wobbling left and right on the first mounting shaft 110. The above settings can once again ensure the setting stability and cooperation degree of the first pulley 210 and the second pulley 220 on the track, and improve the use fluency and practicality of the sliding and folding doors and windows.

[0039] As a preferred solution of this embodiment, refer to Figures 1 to 4 The number of the first pulleys 210 is set to two, and the second pulley 220 is disposed between the two first pulleys 210.

[0040] Among them, setting the number of the first pulleys 210 to two and disposing the second pulley 220 between the two first pulleys 210 can ensure the force-bearing stability of the pulley assembly for the ultra-narrow sliding and folding doors and windows in cooperation with the track, and at the same time, the limit of the second pulley 220 can make the force balanced, achieving the purpose of preventing the two first pulleys 210 from derailing.

[0041] In this embodiment, the number of the second pulleys 220 is not specifically limited and can be selected according to the actual application scenario, and no specific limitation is made here. Figure 1 An example in which two second pulleys 220 are provided is given in

[0042] As a preferred solution of this embodiment, refer to Figure 1 、 Figure 2 and Figure 4 The number of the pulley sets 20 is set to be multiple, and the multiple pulley sets 20 are arranged in parallel.

[0043] Among them, in the actual application process, the track can be a double track or a multi-track. Then, the pulley set 20 of the pulley assembly for ultra-narrow sliding doors and windows in this embodiment can achieve the purpose of one-to-one correspondence and matching with the multi-track, so as to improve the applicability of the pulley assembly for ultra-narrow sliding doors and windows in this embodiment.

[0044] A plurality of pulley sets 20 are parallel to each other to ensure the smooth sliding of the plurality of pulley sets 20 on the track and improve the use effect.

[0045] As a preferred solution of this embodiment, referring to Figures 1 to 4 , the first pulley 210 and the second pulley 220 are distributed on the base 10 along the length direction of the base 10 and are collinearly arranged on the base 10.

[0046] Among them, the above-mentioned first pulley 210 and second pulley 220 are distributed on the base 10 along the length direction of the base 10, which improves the overall integration of the pulley assembly for ultra-narrow sliding doors and windows. And they are collinearly arranged on the base 10 to ensure the fitting degree of the first pulley 210 and the second pulley 220 with the track respectively, improve the use stability and smoothness of the pulley assembly for ultra-narrow sliding doors and windows on the track, and can also effectively prevent the wear of the first pulley 210 and the second pulley 220 and improve the service life.

[0047] As a preferred solution of this embodiment, the second pulley 220 adopts a bearing.

[0048] The bearing has a low friction coefficient and high rotation accuracy, which can reduce the self-wear of the second pulley 220 and improve the use effect and service life again when the pulley assembly for ultra-narrow sliding doors and windows is applied.

[0049] The embodiment of the present application also discloses a door and window, including the pulley assembly for ultra-narrow sliding doors and windows in the foregoing embodiment. This sliding door and window has the same structure and beneficial effects as the pulley assembly for ultra-narrow sliding doors and windows in the foregoing embodiment. The structure and beneficial effects of the pulley assembly for ultra-narrow sliding doors and windows have been described in detail in the foregoing embodiment and will not be repeated here. It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Those skilled in the art can modify the technical solutions recorded in the above embodiments or perform equivalent replacements on some of the technical features; and all such modifications and replacements should fall within the protection scope of the appended claims of the present invention.

Claims

1. A pulley assembly for extremely narrow sliding doors and windows, characterized in that, Comprising: A base; A pulley set, the pulley set includes a first pulley and a second pulley, both the first pulley and the second pulley are rotatably arranged on the base; a first annular groove is formed on the outer periphery of the first pulley, and a second annular groove is formed on the outer periphery of the second pulley, the first annular groove and the second annular groove are used to cooperate with a track; the depth of the second annular groove is greater than the depth of the first annular groove, so that first limiting arms and second limiting arms are formed on the second pulley and are arranged oppositely; Wherein, the first pulley is a bearing.

2. The pulley assembly for ultra-narrow sliding and folding doors according to claim 1, characterized in that, A first installation groove and a second installation groove are formed on the base, a first installation shaft is arranged on the first installation groove, the first pulley is arranged on the first installation shaft and is rotationally connected to the base through the first installation shaft; a second installation shaft is arranged on the second installation groove, the second pulley is arranged on the second installation shaft and is rotationally connected to the base through the second installation shaft.

3. The pulley assembly for extremely narrow sliding and folding doors according to claim 2, wherein, Part of the first pulley and part of the second pulley protrude from the base.

4. The pulley assembly for extremely narrow sliding and folding doors according to claim 3, characterized in that, The protruding height of the first pulley on the base is h1, and the protruding height of the second pulley on the base is h2; Wherein, h2 > h1.

5. The pulley assembly for extremely narrow sliding and folding doors according to claim 2, characterized in that, First abutting members are arranged on opposite side walls in the first installation groove, and the first installation shaft is arranged between the two first abutting members; second abutting members are arranged on opposite side walls in the second installation groove, and the second installation shaft is arranged between the two second abutting members.

6. The pulley assembly for ultra-narrow sliding and folding doors and windows according to any one of claims 1 to 5, characterized in that The number of the first pulleys is set to two, and the second pulley is arranged between the two first pulleys.

7. The pulley assembly for ultra-narrow sliding and folding doors according to any one of claims 1 to 5, characterized in that The number of the pulley sets is set to be multiple, and the multiple pulley sets are arranged in parallel.

8. The pulley assembly for extremely narrow sliding and folding doors and windows according to any one of claims 1 to 5, characterized in that, The first pulley and the second pulley are distributed on the base along the length direction of the base and are collinear on the base.

9. The pulley assembly for extremely narrow push-pull doors and windows according to any one of claims 1 to 5, characterized in that The second pulley is a bearing.

10. A kind of door and window, characterized in that, Including the pulley assembly for extremely narrow push-pull doors and windows according to any one of claims 1 to 9.

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