bottom linkage

Abstract

The utility model relates to bottom linkage device for door and window installation, it discloses the rivet of the middle place of pulley frame has the protrusion, sets up the strip hole respectively on the position opposite rivet on inner shell and outer shell, rivet inserts into the strip hole, the nut is installed in the right end in inner shell, the adjusting lift screw is installed in the right side of outer shell, and is connected through the thread with the nut, is provided with the window in the right end top of outer shell, the auxiliary wheel is installed in the top of adjusting piece, adjusting piece is provided with strip through -hole, the left end of adjusting piece is bent downward, adjusting piece can be installed in the right side of window top of outer shell left and right slidingly, the left end of adjusting piece is bent downward and extends to the inner shell through the top window of outer shell, locking the piece can be installed in the top left and right sides of outer shell rotatably. The utility model has the advantages of simple structure, stable work, flexible and convenient adjustment, it can accurately adjust the size of the belt tension of auxiliary wheel connection, and reduces the phenomenon that auxiliary wheel is deformed by the influence of belt tension.

Description

Technical Field

[0001] This utility model relates to a bottom linkage device, specifically a bottom linkage device in which the auxiliary wheel can be flexibly adjusted and the installation is fixed and not easily loosened or deformed. Background Technology

[0002] Currently, when installing sliding doors and windows, a bottom linkage device is often installed between the bottom of the door / window and the profile track to allow the door / window to slide smoothly on the door frame profile. The bottom linkage device has auxiliary wheels for connecting to the belt. However, the auxiliary wheels on the market are currently installed by inserting them into the left and right ends of the bottom linkage device. Although this method provides convenience during the installation of the bottom linkage device, the belt may become too tense or too loose after a long period of use due to belt specifications or usage. Traditional externally inserted auxiliary wheels cannot cope with this situation that requires flexible adjustment. At the same time, when the tension is too high, the pull of the belt can easily cause the auxiliary wheels to deform during use, resulting in unnecessary noise or even jamming of the bottom linkage device when the door / window moves. Summary of the Invention

[0003] The purpose of this invention is to provide a bottom linkage device that uses an L-shaped adjusting plate to flexibly adjust the auxiliary wheel to the outer casing, solving the problem of looseness of the belt connecting the auxiliary wheel. This allows the belt tension to be easily adjusted to a suitable level, making the product run more stably and extending its service life.

[0004] The technical solution of this utility model is based on a shell, pulley, pulley frame, adjusting plate, auxiliary wheel, adjusting screw, locking lever, inner shell, adjusting lifting screw, nut, and pulley mounted on the pulley frame, and then the inner shell installed inside the shell. The key feature is that the pulley frame has a forward and backward protruding pin in the middle. Inclined and longitudinal slotted holes are respectively provided on the front and rear sides of the inner and outer shells opposite to the pin. The front and rear ends of the pin are inserted into the slotted holes on the front and rear sides of the inner and outer shells, respectively. A cavity for installing the nut is provided on the right end of the inner shell, and the nut is installed in the cavity. The adjusting lifting screw is installed on the right side of the outer shell, and one end of the adjusting lifting screw is connected to the screw... The inner and outer shells are connected by threads. The forward and reverse adjustment screws can force the inner shell to move left and right within the outer shell through the nut, while simultaneously causing the pulley frame to drive the pulley to rise and fall. A window is provided at the top right end of the outer shell. An auxiliary wheel is installed on the top right side of the adjustment plate. A strip-shaped through hole is provided in the middle of the adjustment plate. The left end of the adjustment plate is bent downward. The adjustment plate can be slidably installed on the top of the outer shell to the right of the window by the adjustment screw passing through the strip-shaped through hole of the adjustment plate. The left end of the adjustment plate is bent downward and extends into the inner shell through the window at the top of the outer shell. The locking lever is rotatably installed on the top left and right sides of the outer shell by rivets. The locking lever is located at the bottom end of the rivet, and the bottom end of the rivet extends downward to the bottom of the outer shell.

[0005] The width of the locking lever of this utility model is smaller than the width of the outer shell, and the length of the locking lever is greater than the width of the outer shell. Rotating the locking lever in both directions can lock or release the outer shell on the profile slide groove installed on the bottom linkage device; the width of the adjusting plate is equal to the width of the window of the outer shell.

[0006] The working principle of this utility model is that the auxiliary wheel is installed on the outer shell through an L-shaped adjusting plate. Loosening or tightening the adjusting screw allows the auxiliary wheel to move flexibly left and right on the outer shell for adjustment or fixation, thereby adjusting the belt tension of the auxiliary wheel connected to the door frame to a suitable force. At the same time, the width of the adjusting plate is the same as the width of the window of the outer shell. With the help of the horizontal strip through hole of the adjusting plate itself, the adjusting plate moves horizontally during adjustment and will not deviate. This makes the force of the belt on the auxiliary wheel more precise and stable, and allows the auxiliary wheel to flexibly adjust the belt tension while reducing the deformation of the auxiliary wheel due to the belt tension.

[0007] The advantages of this utility model are its simple structure, stable operation, and flexible and convenient adjustment. It can accurately adjust the belt tension of the auxiliary wheel and reduce the deformation of the auxiliary wheel due to belt tension. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0009] Figure 2 This is a schematic diagram of the overall three-dimensional structure of this utility model from another perspective;

[0010] Figure 3 This is an exploded three-dimensional structural diagram of the present invention. Detailed Implementation

[0011] according to Figure 1 , Figure 2 , Figure 3The present invention, as shown, comprises a shell 1, a pulley 2, a pulley frame 2.1, an adjusting plate 3, an auxiliary wheel 4, an adjusting screw 5, a locking lever 6, an inner shell 7, an adjusting screw 8, and a nut 9. The pulley 2 is mounted on the pulley frame 2.1 and then installed inside the shell 1 via the inner shell 7. The key feature is that a forward- and backward protruding pin 2.2 is provided in the middle of the pulley frame 2.1. Inclined and longitudinal slotted holes are respectively provided on the front and rear sides of the inner shell 7 and the outer shell 1 opposite to the pin 2.2. The front and rear ends of the pin 2.2 are inserted into the slotted holes on the front and rear sides of the inner shell 7 and the outer shell 1, respectively. A cavity for installing the nut 9 is provided on the right end of the inner shell 7. The adjusting screw 8 is installed on the right side of the outer shell 1. The left end of screw 8 is connected to nut 9 by thread. The forward and reverse adjustment screw 8 can force the inner shell 7 to move left and right inside the outer shell 1 through nut 9, and at the same time cause the pulley frame 2.1 to drive the pulley 2 to rise and fall. A window is provided at the top right end of the outer shell 1. The auxiliary wheel 4 is installed on the top right side of the adjusting plate 3. A strip-shaped through hole is provided in the middle of the adjusting plate 3. The left end of the adjusting plate 3 is bent downward. The adjusting plate 3 can be slid left and right on the top of the outer shell 1 to the right of the window through the strip-shaped through hole of the adjusting plate. The left end of the adjusting plate 3 is bent downward and extends into the inner shell 7 through the top window of the outer shell 1. The locking lever 6 can be rotatably installed on the top left and right sides of the outer shell 1 by rivets. The locking lever 6 is located at the bottom end of the rivet, and the bottom end of the rivet extends downward to the bottom of the outer shell 1. The width of the locking lever 6 is less than the width of the outer shell 1, and the length of the locking lever 6 is greater than the width of the outer shell 1. Rotating the locking lever 6 in both directions can lock or release the outer shell 1 on the profile slide groove installed on the bottom linkage device; the width of the adjusting piece 3 is equal to the width of the window of the outer shell 1.

Claims

1. A bottom linkage device, comprising a housing, pulleys, a pulley bracket, an adjusting plate, an auxiliary wheel, an adjusting screw, a locking lever, an inner housing, an adjusting lifting screw, and a nut, wherein the pulleys are mounted on the pulley bracket and then installed into the housing through the inner housing, characterized in that... A forward- and backward-protruding pin is located in the middle of the pulley frame. An inclined strip-shaped hole and a longitudinal strip-shaped hole are respectively located on the front and rear sides of the inner and outer shells, opposite to the pin. The front and rear ends of the pin are inserted into the strip-shaped holes on the front and rear sides of the inner and outer shells, respectively. A cavity for installing a nut is located on the right end of the inner shell. The nut is installed in the cavity. An adjusting screw is installed on the right side of the outer shell, and one end of the adjusting screw is threadedly connected to the nut. Adjusting the adjusting screw in both forward and reverse directions forces the inner shell to move left and right within the outer shell via the nut, simultaneously moving the pulley frame... The wheel frame drives the pulley to rise and fall; a window is provided at the top right end of the outer shell, an auxiliary wheel is installed on the top right side of the adjusting plate, a strip-shaped through hole is provided in the middle of the adjusting plate, the left end of the adjusting plate is bent downwards, and the adjusting plate can be slidably installed on the top of the outer shell to the right of the window by passing through the strip-shaped through hole of the adjusting plate with the adjusting screw, and the left end of the adjusting plate is bent downwards and extends through the window at the top of the outer shell into the inner shell; the locking lever is rotatably installed on the top left and right sides of the outer shell by the rivet, the locking lever is located at the bottom end of the rivet, and the bottom end of the rivet extends downwards to the bottom of the outer shell.

2. The bottom linkage device according to claim 1, characterized in that: The width of the locking lever is less than the width of the housing, and the length of the locking lever is greater than the width of the housing. Rotating the locking lever in both directions can lock or release the housing on the profile slide groove installed on the bottom linkage device; the width of the adjusting plate is equal to the width of the housing window.

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