Chain type counterweight device

Abstract

The utility model discloses a chain type counterweight device which mainly comprises a cavity, a pressing rod, a front end cover, a chain, a chain wheel seat and a first chain wheel. During use, one end of the chain is connected with the weight box, the other end of the chain enters the cavity after winding the first chain wheel and is connected to the mounting seat after winding the second chain wheel, and tension of the chain is converted into pressure on the pressing rod through the second chain wheel, so that weight increment and weight balancing are performed on the weight box. By means of weight increment in the mode, the size and the weight of the weight box and the weight of the balancing weight can be reduced by means of the characteristics that the air pressure supporting rod is small in size, light in weight and constant in output pressure, and therefore the frame of the lifting window can be further shrunk and narrowed. Meanwhile, in the contraction process of the pressing rod, constant pressure is provided for the balance weight end (the sum of the pressure of the balance weight box, the balance weight block and the pressing rod) all the time, so that the constant weight of the balance weight end is ensured, and large fluctuation of balance weight force is avoided. The device also has the advantages of simple structure, convenience in operation and easiness in implementation.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting windows, in particular to a device for expanding a lifting window counterweight. Background Art

[0002] At present, most of the existing lifting windows use counterweight blocks / counterweight bars to balance the weight of the movable window sash. As the window area increases, the volume of the counterweight block also increases. An excessively large volume will improperly increase the area of ​​the window frame, thereby affecting the overall appearance of the lifting window and reducing the safety factor of the lifting structure.

[0003] Therefore, the existing technology needs to be further improved and perfected. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a chain-type counterweight device for expanding the counterweight of a lifting window.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] A chain-type counterweight device mainly includes a cavity, a pressure rod, a front end cover, a chain, a sprocket seat, and a first sprocket. The cavity is arranged in the bottom frame or the side frame of the lifting window. The front end cover is fixedly arranged at the front end of the cavity, and is provided with an opening for the chain to pass through. The pressure rod is installed in the cavity toward the rear, and its fixed section is connected to the front end cover, and the movable section extends toward the rear end of the cavity. The first sprocket is arranged on the sprocket seat. The sprocket seat is arranged in front of the cavity and is located outside the cavity. One end of the chain is connected to the movable window sash, and the other end enters the cavity after passing around the first sprocket and is connected to the movable section of the pressure rod.

[0007] Furthermore, the counterweight device also includes a mounting seat and a second sprocket. The mounting seat is symmetrically arranged in the middle of the pressure rod, and the pressure rod is locked and fixed in the cavity. The mounting seat is provided with a locking hole for locking the chain. The second sprocket is installed at the end of the movable section of the pressure rod. The other end of the chain enters the cavity after winding around the first sprocket, and then is fixed in the locking hole of the mounting seat after winding around the second sprocket.

[0008] Furthermore, the counterweight device further comprises pulleys which are symmetrically arranged on both sides of the ends of the movable section of the pressure rod to guide the movable section of the pressure rod to smoothly extend and retract in the cavity.

[0009] Furthermore, the counterweight device further comprises a first guide rail, which is arranged at the inner bottom of the cavity, below the pulley, and abuts against the pulley.

[0010] Furthermore, the counterweight device also includes a second guide rail. The second guide rail is arranged at the bottom of the outer side of the cavity and the bottom of the sprocket seat. The cavity and the sprocket seat are both clamped at the bottom of the lifting window or in the side frame through the second guide rail, and the distance between the two can be freely adjusted.

[0011] As a preferred solution of the present utility model, the second guide rail adopts a symmetrical L-shaped structure design.

[0012] Furthermore, the counterweight device further comprises a third guide rail, which is arranged at the top of the inner side of the cavity, above the pulley, and abuts against the pulley.

[0013] Furthermore, the counterweight device further comprises a rear end cover which is installed at the rear end of the cavity.

[0014] The working process and principle of the utility model are as follows: the utility model is convenient for expanding the weight of the counterweight box. When in use, one end of the chain is connected to the counterweight box, and the other end is wound around the first sprocket and then enters the cavity, and is wound around the second sprocket and connected to the mounting seat. The tension of the chain is converted into pressure on the pressure rod through the second sprocket, thereby increasing the weight and counterweight of the counterweight box. Increasing weight in this way can utilize the characteristics of the small volume, light weight, and constant output pressure of the pneumatic support rod to reduce the volume and weight of the counterweight box and the counterweight block, so that the frame of the lifting window can be further reduced and narrowed. At the same time, during the contraction of the pressure rod, a constant pressure is always provided to the counterweight end (the sum of the pressure of the counterweight box, the counterweight block, and the pressure rod), thereby ensuring that the weight of the counterweight end is constant and avoiding large fluctuations in the counterweight force. The utility model also has the advantages of simple structure, convenient operation, and easy implementation.

[0015] Compared with the prior art, the utility model also has the following advantages:

[0016] (1) The chain-type counterweight device provided by the utility model uses a pressure rod to output a constant pressure, thereby avoiding a situation where the force at the counterweight end has a large pressure fluctuation, so that the window sash can be raised and lowered steadily and smoothly.

[0017] (2) The chain-type counterweight device provided by the utility model adopts a design of a sprocket combined with a pulley, so that the counterweight device can maintain a constant output force while also maintaining a smooth extension and retraction process of the pressure rod.

[0018] (3) The chain-type counterweight device provided by the utility model uses a second guide rail to clamp the cavity and the sprocket seat in the bottom frame or the side frame of the lifting window. While the connection is fixed, the distance between the two can be freely adjusted to facilitate the installation personnel to perform debugging and testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the connection between the chain type counterweight device provided by the utility model and the counterweight box.

[0020] Figure 2 It is a structural diagram of the chain type counterweight device provided by the utility model.

[0021] Figure 3 It is a schematic diagram of the internal structure of the chain type counterweight device provided by the utility model.

[0022] Figure 4 It is a three-dimensional diagram of the internal structure of the chain-type counterweight device provided by the utility model.

[0023] Figure 5 It is a partial schematic diagram of the chain type counterweight device provided by the utility model.

[0024] Figure 6 It is a cross-sectional view of the cavity provided by the utility model.

[0025] Figure 7 It is a structural schematic diagram of the second sprocket and the pulley provided by the utility model.

[0026] Figure 8 It is a three-dimensional diagram of the cavity provided by the utility model.

[0027] Description of the reference numerals in the above drawings:

[0028] 1- cavity, 2- pressure rod, 3- front end cover, 4- chain, 5- sprocket seat, 6- first sprocket, 7- opening, 8- mounting seat, 9- second sprocket, 10- locking hole, 11- pulley, 12- first guide rail, 13- second guide rail, 14- third guide rail, 15- rear end cover, 16- fixed section, 17- movable section, 18- counterweight box. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model clearer and more specific, the utility model is further described below with reference to the accompanying drawings and embodiments.

[0030] Embodiment 1:

[0031] like Figures 1 to 8As shown, this embodiment discloses a chain-type counterweight device, which mainly includes a cavity 1, a pressure rod 2, a front cover 3, a chain 4, a sprocket seat 5, and a first sprocket 6. The cavity 1 is arranged in the bottom frame or the side frame of the lifting window. The front cover 3 is fixedly arranged at the front end of the cavity 1, and is provided with an opening 7 for the chain 4 to pass through. The pressure rod 2 is installed in the cavity 1 toward the rear, and its fixed section 16 is connected to the front cover 3, and the movable section 17 extends toward the rear end of the cavity 1. The first sprocket 6 is arranged on the sprocket seat 5. The sprocket seat 5 is arranged in front of the cavity 1, outside the cavity 1. One end of the chain 4 is connected to the movable window sash, and the other end enters the cavity 1 after winding around the first sprocket 6, and is connected to the movable section 17 of the pressure rod 2.

[0032] Furthermore, the counterweight device also includes a mounting seat 8 and a second sprocket 9. The mounting seat 8 is symmetrically arranged in the middle of the pressure rod 2 to lock and fix the pressure rod 2 in the cavity 1. The mounting seat 8 is provided with a locking hole 10 for locking the chain 4. The second sprocket 9 is installed at the end of the movable section 17 of the pressure rod 2. The other end of the chain 4 enters the cavity 1 after winding around the first sprocket 6, and then is fixed in the locking hole 10 of the mounting seat 8 after winding around the second sprocket 9.

[0033] Furthermore, the counterweight device further comprises a pulley 11. The pulley 11 is symmetrically arranged on both sides of the end of the movable section 17 of the pressure rod 2, and guides the movable section 17 of the pressure rod 2 to smoothly extend and retract in the cavity 1.

[0034] Furthermore, the counterweight device further comprises a first guide rail 12. The first guide rail 12 is arranged at the inner bottom of the cavity 1, below the pulley 11, and abuts against the pulley 11.

[0035] Furthermore, the counterweight device further includes a second guide rail 13. The second guide rail 13 is arranged at the bottom of the outer side of the cavity 1 and the bottom of the sprocket seat 5. The cavity 1 and the sprocket seat 5 are both clamped at the bottom of the lifting window or in the side frame through the second guide rail 13, and the distance between the two can be freely adjusted.

[0036] As a preferred solution of the present invention, the second guide rail 13 adopts a symmetrical L-shaped structure design.

[0037] Furthermore, the counterweight device further comprises a third guide rail 14. The third guide rail 14 is arranged at the top of the inner side of the cavity 1, above the pulley 11, and abuts against the pulley 11.

[0038] Furthermore, the counterweight device further comprises a rear end cover 15. The rear end cover 15 is installed at the rear end of the cavity 1.

[0039] The working process and principle of the utility model are as follows: the utility model is convenient for expanding the weight of the counterweight box 18. When in use, one end of the chain 4 is connected to the counterweight box 18, and the other end is wound around the first sprocket 6 and then enters the cavity 1, and is wound around the second sprocket 9 and then connected to the mounting seat 8. The tension of the chain 4 is converted into pressure on the pressure rod 2 through the second sprocket 9, thereby increasing the weight and counterweight of the counterweight box 18. Increasing weight in this way can utilize the characteristics of the small volume, light weight, and constant output pressure of the gas pressure support rod to reduce the volume and weight of the counterweight box 18 and the counterweight block, so that the frame of the lifting window can be further reduced and narrowed. At the same time, during the contraction of the pressure rod 2, a constant pressure is always provided to the counterweight end (the sum of the pressure of the counterweight box 18, the counterweight block, and the pressure rod 2), thereby ensuring that the weight of the counterweight end is constant and avoiding large fluctuations in the counterweight force.

[0040] The utility model also has the advantages of simple structure, convenient operation and easy implementation.

[0041] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A chain type counterweight device, characterized in that: It includes a cavity, a pressure rod, a front end cover, a chain, a sprocket seat, and a first sprocket; the cavity is arranged in the bottom frame or the side frame of the lifting window; the front end cover is fixedly arranged at the front end of the cavity, and is provided with an opening for the chain to pass through; the pressure rod is installed in the cavity toward the rear, and its fixed section is connected to the front end cover, and the movable section extends toward the rear end of the cavity; the first sprocket is arranged on the sprocket seat; the sprocket seat is arranged in front of the cavity and is located outside the cavity; one end of the chain is connected to the movable window sash, and the other end goes around the first sprocket and enters the cavity, and is connected to the movable section of the pressure rod.

2. The chain type counterweight device according to claim 1, characterized in that: The counterweight device also includes a mounting seat and a second sprocket; the mounting seat is symmetrically arranged in the middle of the pressure rod, locking and fixing the pressure rod in the cavity; the mounting seat is provided with a locking hole for locking the chain; the second sprocket is installed at the end of the movable section of the pressure rod; the other end of the chain goes around the first sprocket and enters the cavity, and then goes around the second sprocket and is fixed in the locking hole of the mounting seat.

3. The chain type counterweight device according to claim 1, characterized in that: The counterweight device also includes a pulley; the pulleys are symmetrically arranged on both sides of the end of the movable section of the pressure rod to guide the movable section of the pressure rod to smoothly extend and retract in the cavity.

4. The chain type counterweight device according to claim 3, characterized in that: The counterweight device further comprises a first guide rail; the first guide rail is arranged at the inner bottom of the cavity, below the pulley, and abuts against the pulley.

5. The chain type counterweight device according to claim 1, characterized in that: The counterweight device also includes a second guide rail; the second guide rail is arranged at the bottom of the outer side of the cavity and the bottom of the sprocket seat; the cavity and the sprocket seat are both clamped at the bottom of the lifting window or the side frame through the second guide rail, and the distance between the two can be freely adjusted.

6. The chain type counterweight device according to claim 5, characterized in that: The second guide rail adopts a symmetrical L-shaped structure design.

7. The chain type counterweight device according to claim 3, characterized in that: The counterweight device also includes a third guide rail; the third guide rail is arranged on the top of the inner side of the cavity, located above the pulley, and abuts against the pulley.

8. The chain type counterweight device according to claim 1, characterized in that: The counterweight device also includes a rear end cover; the rear end cover is installed at the rear end of the cavity.

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