Manual chain window opener

Abstract

The utility model discloses a manual chain window opener which comprises a shell, a containing cavity is formed in the shell, the upper end and the lower end in the containing cavity are open, a chain and a chain transmission mechanism driving the chain to rotate are arranged in the containing cavity, an open groove is formed in the side portion of the containing cavity, and the extending end of the chain extends out of the shell through the open groove. An upper end cover and a lower end cover are installed at the two openings respectively, a first penetrating hole is formed in the lower end cover, a connector is rotatably installed in the first penetrating hole, a second penetrating hole is formed in the position, corresponding to the first penetrating hole, of the upper end cover, a first annular groove is formed in the inner wall of the first penetrating hole, and a first bearing is installed between the first annular groove and the connector. The first annular groove is formed in the first penetrating hole of the lower end cover, and the first bearing is installed between the first annular groove and the connector, so that friction and shaking of the connector in the rotating process are effectively reduced, and noise and abrasion caused by shaking are avoided.

Description

Technical Field

[0001] This utility model relates to the field of doors and windows, specifically to a manual chain window opener. Background Technology

[0002] Window openers help users control the opening and closing of windows flexibly and efficiently. Existing window openers consist of a hollow housing with openings at both ends, end caps for sealing the openings, and a chain and chain drive mechanism located within the housing. A connector mounted on the lower end cap connects to the chain drive within the housing, and the extended end of the chain extends through an opening slot on the side of the housing and connects to the window sash. The connector connects to a hand crank, which controls the opening and closing of the window sash. However, over time, wobbling can occur between the connector and the lower end cap. This not only makes the window opener unstable during operation, affecting the opening and closing efficiency, but in severe cases, it can even prevent the window from opening or closing properly. Furthermore, the wobbling also generates noise, negatively impacting the user experience. In addition, prolonged wobbling shortens the lifespan of the window opener. Utility Model Content

[0003] The purpose of this invention is to provide a manual chain window opener, which can prevent the connector from shaking.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] A manual chain window opener includes a housing with a receiving cavity. The receiving cavity has upper and lower openings. A chain and a chain drive mechanism for driving the chain to rotate are provided in the receiving cavity. An opening groove is provided on the side of the receiving cavity. The extended end of the chain extends out of the housing through the opening groove. An upper end cover and a lower end cover are respectively installed at the two openings. A first through hole is provided on the lower end cover, and a connector is rotatably installed in the first through hole. A second through hole is provided on the upper end cover at the position corresponding to the first through hole. A first annular groove is provided on the inner wall of the first through hole, and a first bearing is installed between the first annular groove and the connector.

[0006] By adopting the above technical solution, and by setting a first annular groove in the first through hole of the lower end cover, and installing a first bearing between the first annular groove and the connector, the friction and shaking of the connector during rotation are effectively reduced, avoiding problems such as noise and accelerated wear caused by shaking. Furthermore, the use of the first bearing improves the rotational flexibility of the connector and ensures its stability during long-term use.

[0007] In a specific embodiment of this utility model: a second annular groove is provided on the inner wall of the second through hole of the upper end cover, and a second bearing is installed in the second annular groove.

[0008] In a specific embodiment of this utility model: the accommodating cavity is further provided with a worm gear structure connected to the chain drive mechanism, the lower end of the worm in the worm gear structure is connected to the connector, and the upper end extends upward to a position close to the upper end cover.

[0009] In a specific embodiment of this utility model: the lower end face of the worm gear has a socket and the upper end face has a plug. The outer circumferential surface of the connector is provided with a boss, and the connector is divided into an insertion part and a rotating part. The rotating part is located in the first through hole and its end extends downward out of the first through hole. The end of the rotating part has a through hole. The insertion part extends upward and is inserted into the socket of the worm gear.

[0010] In a specific embodiment of this utility model: the socket is an internal hexagonal socket, the insertion part is an external hexagonal structure, and the rotating part is a cylindrical structure.

[0011] In summary, by providing a first annular groove on the inner wall of the first perforation of the lower end cover and installing a first bearing between the first annular groove and the connector, the friction and shaking of the connector during rotation are effectively reduced, thus avoiding noise and wear caused by shaking. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] Figure 1 This is a structural schematic diagram of a manual chain window opener according to this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the lower end cover of this utility model;

[0015] Figure 3 This is a structural schematic diagram of the sprocket of this utility model;

[0016] Figure 4 This is a schematic diagram of the worm gear of this utility model;

[0017] Figure 5 This illustrates how two window openers can be linked together via a linkage component. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1As shown, this utility model is a manual chain window opener, including a housing 10, with a receiving cavity 11 inside the housing 10, the upper and lower ends of the receiving cavity 11 being open 12. A chain 14 and a chain drive mechanism 20 for driving the chain to rotate are disposed within the receiving cavity 11. An opening slot is provided on the side of the receiving cavity 11. The protruding end of the chain 14 extends out of the housing 10 through the opening slot and connects to the window sash, while the fixed end is fixed inside the housing 10.

[0020] like Figure 1 and Figure 3 As shown, the chain drive mechanism 20 includes a sprocket 21 and a chain box 22. The sprocket 21 meshes with the chain 14, and the chain 14 is constrained into two rows within the chain box 22. The movement of the chain 14 by the rotation of the sprocket 21 is prior art, disclosed in Chinese patent CN203114003U, and will not be elaborated upon here.

[0021] like Figure 1 and Figure 2 As shown, an upper end cover 161 and a lower end cover 162 are respectively installed at the upper and lower openings 12. A first through hole 171 is provided on the lower end cover 162. A connector 18 is rotatably installed in the first through hole 171. A first annular groove 30 is provided on the inner wall of the first through hole 171. A first bearing 31 is installed between the first annular groove 30 and the connector 18. The use of a bearing can effectively reduce the friction and shaking of the connector during rotation, avoiding problems such as noise and accelerated wear caused by shaking. Moreover, the use of a bearing also improves the rotational flexibility of the connector and ensures its stability during long-term use. In addition, a second through hole 172 is provided on the upper end cover 161 at the position corresponding to the first through hole 171. A second annular groove 32 is provided on the inner wall of the second through hole 172, and a second bearing 33 is installed in the second annular groove.

[0022] like Figure 1 and Figure 4 As shown, a worm gear structure connected to the chain drive mechanism 20 is also provided within the receiving cavity 11. This worm gear structure includes a worm 19 and a worm wheel 25. The worm wheel 25 is coaxially and fixedly connected to the sprocket 21, and meshes with the worm 19. The worm 19 is coaxially arranged with the connector 18. The lower end of the worm 19 is connected to the connector 18, and the upper end extends upwards to a position near the upper end cover 161. Thus, when the connector 18 is rotated, it can drive the worm 19 to rotate, synchronously driving the worm wheel 25 to rotate, driving the sprocket 21 to rotate, and further driving the chain 14 to rotate.

[0023] In this embodiment, the worm gear 19 has a socket on its lower end face and a plug 191 on its upper end face. A boss 181 is provided on the outer circumferential surface of the connector 18, dividing the connector 18 into an insertion part 182 and a rotating part 183. The rotating part 183 is located within the first through hole 171, and its end extends downward out of the first through hole 171. The end of the rotating part 183 has a through hole 184 for connection with a hand crank. The insertion part 182 extends upward and inserts into the socket of the worm gear 19.

[0024] In this embodiment, the rotating part 183 has a cylindrical structure. The insertion part 182 has an external hexagonal structure. The insertion hole of the worm gear 19 is an internal hexagonal socket.

[0025] like Figure 5 As shown, during installation, the window opener housing 10 is vertically installed on one side of the window frame 9, and the extended end of the window opener chain 14 is connected to the window sash. The window opener connector is connected to the hand crank 6, which controls the window opener to open or close the window.

[0026] Considering the significant weight of large window sashes and the limited load-bearing capacity of a single window opener, two window openers can be used to distribute the weight of the window sash, making the opening and closing process more stable, thus reducing the risk of damage caused by the weight. Figure 5 As shown, the two window openers are linked together via a linkage assembly 7. The linkage assembly 7 includes two vertical rotating rods 701, one horizontal rotating rod 702, and two corner brackets 703. The corner brackets are existing technology and can be purchased commercially, so they will not be described in detail here. During installation, the two corner brackets 703 are respectively installed at the two top corners of the upper part of the window frame 9, and the two corner brackets 703 are connected by the horizontal rotating rod 702. The two window openers are respectively installed below the corresponding corner brackets 703, and the lower end of the vertical rotating rod 701 is inserted through the second through hole 172 of the upper cover 161 of the window opener, passes through the second bearing 33, and connects to the upper end of the worm gear 19, while the upper end is inserted into the corresponding corner bracket 703. The second bearing effectively reduces friction and shaking of the vertical rotating shaft 701 during rotation. A hand crank 6 is connected to the connector 18 of one of the window openers. The two window openers are simultaneously controlled by the hand crank 6 and the linkage assembly to open or close the window.

[0027] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A manual chain window opener, comprising a housing, the housing having a receiving cavity with upper and lower openings, a chain and a chain drive mechanism for driving the chain to rotate being disposed within the receiving cavity, an opening groove being provided on the side of the receiving cavity, the protruding end of the chain extending out of the housing through the opening groove, an upper end cover and a lower end cover being respectively installed at the two openings, the lower end cover having a first through hole in which a connector is rotatably installed, and the upper end cover having a second through hole corresponding to the position of the first through hole, characterized in that, The inner wall of the first perforation is provided with a first annular groove, and a first bearing is installed between the first annular groove and the connector.

2. The manual chain window opener according to claim 1, characterized in that, The inner wall of the second perforation of the upper end cover is provided with a second annular groove, and a second bearing is installed in the second annular groove.

3. The manual chain window opener according to claim 1, characterized in that, The cavity is also equipped with a worm gear structure connected to the chain drive mechanism. The lower end of the worm in the worm gear structure is connected to the connector, and the upper end extends upward to a position close to the upper end cover.

4. The manual chain window opener according to claim 3, characterized in that, The worm has a socket on its lower end face and a plug on its upper end face. The connector has a boss on its outer circumference and is divided into an insertion part and a rotating part. The rotating part is located in the first through hole and extends downward out of the first through hole. The end of the rotating part has a through hole. The insertion part extends upward and is inserted into the socket of the worm.

5. The manual chain window opener according to claim 4, characterized in that, The socket is an internal hexagonal socket, the insertion part is an external hexagonal structure, and the rotating part is a cylindrical structure.

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