Hinge adjusting structure for heavy door and window

Abstract

The hinge adjusting structure comprises a hinge leaf part, hinge frame parts, a hinge shaft and a leaf height adjusting block, the hinge frame parts are arranged at the two ends of the hinge leaf part respectively and hinged to the hinge shaft, a leaf profile and a leaf shell are arranged on the side portion of the hinge leaf part, a threaded through hole is formed in a guide part of the leaf profile, and the leaf height adjusting block is arranged in the threaded through hole. A threaded through hole is formed in the fan shell, an adjusting screw is screwed in the threaded through hole, guide holes are formed in the two sides of the threaded through hole, connectors are arranged at the two ends of the fan shell, a U-shaped groove plate is arranged between the two connectors, two mounting holes opposite to the guide holes are formed in one side plate of the U-shaped groove plate, and screw penetrating holes opposite to the mounting holes are formed in the other side plate of the U-shaped groove plate. An adjusting hole opposite to the head of the adjusting screw is formed between the two screw penetrating holes, firstly, the adjusting screw is screwed into the threaded through hole, then the guide part is matched with the U-shaped groove in an inserted mode, then the two sliding blocks are correspondingly inserted into the installation hole and the guide hole, and the lower end of the fixing screw is inserted into the sliding block through hole through the installation hole and penetrates out of the screw penetrating holes to be fixed. And the fan profile and the fan shell are connected.

Description

Technical Field

[0001] The invention relates to a hinge adjustment structure for heavy doors and windows. Background Art

[0002] Door and window hinges are used for openable doors and windows. In addition to the functions of opening and closing, they also affect the performance and appearance of doors and windows. Under the national demand for energy-saving, environmentally friendly and green buildings, the performance of doors and windows is also crucial.

[0003] At present, hinges in the industry require holes or built-in back panels for installation. The production and installation process is complicated, the installation is inconvenient, and the production efficiency is affected. The adjustable functions in the application are complicated, the operation steps are many, and it is time-consuming and laborious. The adjustment effect is not ideal, such as the left and right adjustment hinge axis misalignment, height adjustment gaps, etc., which seriously affect the appearance and service life of doors and windows.

[0004] The market often uses left and right hinge adjustment. Some hinges need to loosen the fixing screws to change the relative position of the frame and sash, and then tighten the screws. Some hinges in the market usually loosen the fixing screws and increase the thickness of the gasket to achieve the left and right position change of the frame and sash. Repeated adjustment will be more cumbersome and inefficient, and the operation is not convenient. Some hinges use cam-type hinge sleeves, which require the sash to be removed and the sleeve direction to adjust the frame and sash position. The adjustment amount is small, there are only 2 fixed data adjustments, and continuous stepless adjustment is not possible. In addition, the frame and sash profiles will be misaligned after installation, affecting the appearance.

[0005] The common hinge height adjustment in the market is that some hinges and height adjustment are integrated on a combination leaf. Each door and window has a combination leaf with an organic height adjustment mechanism. The adjustment needs to be coordinated with each other, and there are many steps, which leads to low production and operation efficiency. Some hinge height adjustment is achieved by placing a top screw under the hinge shaft to lift the hinge shaft, and the hinge shaft and the door leaf are fixed together. This adjustment will cause a gap between the door hinge profile and the frame hinge profile, affecting the appearance. Summary of the invention

[0006] The purpose of the present invention is to provide a hinge adjustment structure for heavy doors and windows, which can ensure the performance of the doors and windows and realize quick installation, simple and accurate adjustment.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A hinge adjustment structure for heavy doors and windows, comprising a hinge fan part, a hinge frame part, a hinge shaft and a fan height adjustment block, wherein the hinge fan part is provided with the hinge frame part at both ends and is hinged to the hinge shaft, and the side of the hinge fan part is provided with a fan profile and a fan housing, and the guide part of the fan profile is provided with a threaded through hole, in which an adjusting screw is screwed, and guide holes are provided on both sides of the threaded through hole, and the two ends of the fan housing are connecting heads, and a U-shaped groove plate is provided between the two connecting heads, and one side plate of the U-shaped groove plate is provided with two mounting holes opposite to the guide holes, and the other side plate of the U-shaped groove plate is provided with screw through holes opposite to the mounting holes, and the screw through holes are provided on the two screw holes. An adjustment hole is provided between the nail holes, which is opposite to the head of the adjustment screw. First, the adjustment screw is screwed into the threaded through hole, and then the guide part is plugged into the U-shaped groove, the mounting hole is aligned with the guide hole, the head of the adjustment screw is aligned with the adjustment hole, and then the two sliders are correspondingly inserted into the mounting hole and the guide hole, and the lower end of the fixing screw is inserted into the through hole of the slider through the mounting hole in turn and fixed through the screw hole. The fan profile is connected to the fan housing, the hinge frame part is fixed to the frame through the frame connection back plate, and the head of the fan housing is connected to the fan through the fan back plate. The fan housing can be moved left and right along the guide hole together with the slider by rotating the adjustment screw forward and backward to achieve left and right adjustment of the fan.

[0009] The fan height adjustment block includes a positioning part, a height adjustment block, a connecting screw, a fixed top screw and an adjusting top screw. The positioning part is against the top of the fan back plate behind the lower fan shell, and the top of the height adjustment block is screwed with the adjusting top screw. The lower end of the adjusting top screw is against the top wall of the positioning part, and the upper end plug of the positioning part is inserted into the slide groove of the height adjustment block, so that the height adjustment block slides along the plug of the positioning part under the action of the adjusting top screw, and the height adjustment block is fixed to the fan by the fixed top screw; when the fan falls off, in order to ensure the sealing of the frame and the fan, when the sunken fan needs to be adjusted, first loosen the connecting screws between the upper and lower fan shells and the fan, screw the adjusting top screw to move the fan upward relative to the fan shell, and keep the positioning part stationary to achieve fan height adjustment.

[0010] The hinge fan part includes a hinge shaft tube and a fan profile, and the fan profile includes a Z-shaped connecting plate and the guide part. The free end of the front side plate of the Z-shaped connecting plate is arranged on the hinge shaft tube facing the fan side, and the rear side of the free end of the rear side plate of the Z-shaped connecting plate is provided with a guide part, and the guide part includes an insert plate and an adjusting screw. One end of the insert plate is L-shaped and arranged on the rear side of the free end of the rear side plate of the Z-shaped connecting plate. Guide holes are provided at both ends of the insert plate, and a threaded through hole matching the adjusting screw is between the two guide holes. The width of the U-shaped groove of the U-shaped groove plate is greater than the thickness of the guide part. The two ends of the adjusting screw are respectively abutted against the two side plates of the U-shaped groove plate to realize the movement of the fan housing along the guide hole driven by the slider, thereby realizing the adjustment of the gap between the fan and the frame.

[0011] The positioning part includes a positioning vertical plate and a rail head arranged above the positioning vertical plate, the rail head includes a T-shaped plate arranged on the top wall of the positioning vertical plate, an arc-shaped convex column is arranged in front of the T-shaped plate, a narrow top head is arranged on the top of the arc-shaped convex column, and limiting wing rods are arranged on both sides of the bottom of the arc-shaped convex column.

[0012] The height adjustment block includes a substrate body, four corners of the substrate body are provided with fixed top screw holes, the middle part of the substrate body is provided with two connecting screw holes, the top of the substrate body is provided with an adjusting top screw hole, and a slide groove for inserting the rail head of the positioning part is provided below the adjusting top screw hole of the substrate body, the adjusting top screw is screwed in the adjusting top screw hole, and the adjusting top screw is abutted against the top wall of the rail head of the positioning part, and the two limiting wing rods are located between the two connecting screw holes and the fixed top screw hole below, and the two sides of the substrate body are provided with through-length slide grooves, through which the T-slot of the fan slides into a predetermined position, the bottom of the through-length slide groove corresponds to the middle part of the fixed top screw hole, and an arc-shaped expansion groove is provided at the position corresponding to the fixed top screw hole, and the arc-shaped expansion groove is opened to the bottom wall of the substrate body by the through-length slide groove.

[0013] The fan back plate includes a T-shaped base plate, which cooperates with the T-slot of the fan. An L-shaped groove is provided on one side of the small end wall of the T-shaped base plate, and a nail hole is provided in the middle. The connecting head includes a U-shaped base plate, and the two side plates of the U-shaped base plate are pressed against the two end plates of the notch of the T-slot of the fan. An L-shaped plug plate that cooperates with the L-slot is convexly provided at the bottom of the groove of the U-shaped base plate. The bottom plate of the U-shaped base plate is provided with screw holes aligned with the nail holes. During the installation process, the fan back plate is inserted into the fan T-slot in advance, and the fan hinge finds the installation position on the upper and lower sides of the hinge, respectively. The bottom surface of the fan shell is close to the fan T-slot, and the fan back plate slides to the position of the fan shell. The fan back plate is connected with the fan shell by snapping, and the nail holes of the fan back plate are aligned with the screw holes of the fan shell. The screws are tightened to realize the installation of the fan hinge.

[0014] Beneficial effects of the present invention: The adjustment structure of the present invention is simple to operate, highly efficient, and ensures the bearing function and appearance of the hinge. The hinge structure is simplified by adjusting the height adjustment block up and down and separating it from the hinge. The hinge is connected to the frame, the leaf, and the height adjustment block of the door and window for quick installation without processing, ensuring the integrity of the door and window and the strength of the force. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiment of the present invention, the embodiment will be described below with reference to the accompanying drawings.

[0016] Figure 1 It is a schematic three-dimensional diagram of the exploded structure of the present invention.

[0017] Figure 1A It is a structural diagram showing the hinge part.

[0018] Figure 2 and Figure 3 It is a schematic diagram showing the state of height adjustment after the installation of the present invention.

[0019] Figure 4 and Figure 5 It is a schematic diagram showing the state of left-right adjustment after the present invention is installed.

[0020] Figure 6 and Figure 7 It is a structural schematic diagram of the fan height adjustment block from two different angles.

[0021] Figure 8 It is a schematic diagram of the cross-sectional structure after the positioning part and the height adjustment block are combined.

[0022] Fig. 9 It is a schematic diagram of the decomposed structure of the fan height adjustment block.

[0023] Fig.10 It is a side view structural diagram of the fan height adjustment block.

[0024] Fig.11 and Fig.12 Schematic diagram of the structure of the height adjustment block from different perspectives.

[0025] Fig.13 and Fig.14 It is a structural schematic diagram of the positioning part from different angles.

[0026] Fig.15 and Fig.16 It is a state structure schematic diagram of the hinge installation process of the present invention.

[0027] Fig.17 yes Fig.16 Schematic diagram of the top view structure.

[0028] Fig.18 It is a schematic diagram of the structure of some components of the present invention in the exploded state of use.

[0029] Fig.19 It is a three-dimensional structural schematic diagram of the present invention.

[0030] Fig. 20 It is a schematic diagram of the three-dimensional structure after the present invention is installed. DETAILED DESCRIPTION

[0031] The following examples are merely used to illustrate possible implementations of the present invention, but are not intended to limit the scope of the present invention, so it is necessary to explain them first.

[0032] like Figures 1 to 20As shown, a hinge adjustment structure for heavy doors and windows of the present invention comprises a hinge frame part 1, a hinge leaf part 2, a hinge shaft 3 and a leaf height adjustment block 4. The two ends of the hinge leaf part 2 are respectively provided with the hinge frame part 1 and are hinged to the hinge shaft 3. The side of the hinge leaf part 2 is provided with a leaf profile 21 and a leaf housing 22. The guide part 211 of the leaf profile 21 is provided with a threaded through hole 2111. An adjusting screw 2112 is screwed in the threaded through hole 2111. Guide holes 2113 are provided on both sides of the grooved through hole 2111, and the two ends of the fan shell 22 are connecting heads 221, and a U-shaped groove plate 222 is provided between the two connecting heads. One side plate of the U-shaped groove plate 222 is provided with two mounting holes 2221 opposite to the guide holes 2113, and the other side plate of the U-shaped groove plate is provided with a screw through hole 2222 opposite to the mounting hole, and an adjustment hole 2223 opposite to the head of the adjusting screw 2112 is provided between the two screw through holes 2222. First, screw the adjusting screw 2112 into the threaded through hole 2111, then insert the guide part 211 into the U-shaped groove of the U-shaped groove plate 222, align the mounting hole 2221 with the guide hole 2113, and align the head of the adjusting screw 2112 with the adjusting hole 2223, then insert the two sliders 23 into the mounting hole 2221 and the guide hole 2113 respectively, insert the lower end of the fixing screw 231 into the through hole of the slider through the mounting hole in turn and penetrate and fix it through the screw hole, and the fan profile is connected to the fan housing. The hinge frame part 1 is fixed to the frame 10 through the frame connecting back plate 11, and the connecting head 221 and the fan back plate 223 of the fan housing 22 are connected to the fan 20 by tightening the screws. When the adjusting screw 2112 is rotated forward and backward, when one end of the adjusting screw contacts the corresponding side plate of the U-shaped groove plate, continuing to screw the adjusting screw will push the fan housing and the connected slider to move along the guide hole to achieve left and right adjustment of the fan, and finally adjust the appropriate gap between the fan and the frame.

[0033] like Figure 1 , Figures 6 to 10 As shown, the fan height adjustment block 4 includes a positioning portion 41, a height adjustment block 42, a connecting screw 43, a fixed top screw 44 and an adjusting top screw 45. The positioning portion 41 is against the top of the fan back plate behind the fan housing below, and the top of the height adjustment block 42 is screwed with the adjusting top screw 45. The lower end of the adjusting top screw is against the top wall of the positioning portion 41, and the upper end rail head 411 of the positioning portion 41 is inserted into the slide groove 420 of the height adjustment block 42, so that the height adjustment block 42 together with the fan is adjusted on the adjusting top screw 45. 5, the track head 411 of the positioning part 41 slides up and down, the positioning part is movably inserted into the T-slot of the fan, and the height adjustment block 42 is fixed to the fan by connecting screws 43 and fixing top screws 44; when the fan falls off, in order to ensure the sealing of the frame and the fan, when the sunken fan needs to be raised, first loosen the fixing screws of the upper and lower fan housings and the fan, and screw the adjusting top screws to make the height adjustment block 42 drive the fan 20 to move upward and downward, and the positioning part 41 does not move, so as to achieve the height adjustment of the fan.

[0034] Specifically, Figure 1A As shown, the hinge fan part 2 includes a fan profile 21, a fan housing 22 and a hinge shaft tube 23A, the fan profile 21 includes a Z-shaped connecting plate 210 and the guide portion 211, the front side plate free end of the Z-shaped connecting plate 210 is arranged on the hinge shaft tube facing the fan side, the rear side of the free end of the rear side plate of the Z-shaped connecting plate is provided with a guide portion 211, the guide portion 211 includes a plug plate 2110 and an adjusting screw 2112, one end of the plug plate 2110 is L-shaped and is arranged on the rear side of the free end of the rear side plate of the Z-shaped connecting plate, and the plug plate 211 0 is provided with guide holes 2113 at both ends, and a threaded through hole 2111 matching the adjusting screw is between the two guide holes 2113. The width of the U-shaped groove of the U-shaped groove plate 222 is greater than the thickness of the guide portion, so that under the action of the adjusting screw 2112, the fan housing 22 can move along the guide hole 2113 driven by the slider 23, that is, by screwing the adjusting screw, the two ends of the fan housing 22 intermittently abut against the two side plates of the corresponding U-shaped groove plate, so that the fan housing can move along the guide hole driven by the slider, thereby realizing the adjustment of the gap between the fan and the frame.

[0035] like Fig.13 and Fig.14 As shown, the positioning portion 41 includes a positioning vertical plate 410 and a rail head 411 arranged above the positioning vertical plate, the rail head 411 includes a T-shaped plate 4111 arranged on the top wall of the positioning vertical plate 410, and the protrusions on both sides of the T-shaped plate serve as guide wings 4110 inserted into corresponding slide grooves, an arc-shaped convex column 4112 is provided in front of the T-shaped plate 4111, a narrow head 4113 is provided on the top of the arc-shaped convex column, and limiting wing rods 4114 are provided on both sides of the bottom of the arc-shaped convex column, and the rear part of the narrow head is the top surface of the T-shaped plate and part of the arc-shaped convex column.

[0036] like Fig.11 and Fig.12As shown, the height adjustment block 42 includes a substrate body 421, four corners of which are provided with fixed top screw holes 422, the middle of which is provided with two connecting screw holes 423, the top of which is provided with an adjusting top screw hole 424, and a slide groove 420 for inserting the rail head of the positioning part is provided below the adjusting top screw hole of the substrate body, an adjusting top screw 45 is screwed in the adjusting top screw hole, and the adjusting top screw 45 abuts against the top wall of the narrow top head 4113 of the rail head 411 of the positioning part, and the two limiting wing rods 4114 are located between the two connecting screws and the two fixed top screws below, and an adjustment activity space is formed between the connecting screws and the fixed top screws below. The slide 420 includes a door-shaped notch 4201 provided on the lower back of the height adjustment block, the top wall of the door-shaped notch faces the rear of the narrow head, and the two side walls of the door-shaped notch are also provided with guide sockets 4202 for inserting two guide wing protrusions 4110 of the T-shaped plate, and the front of the door-shaped notch is provided with notches corresponding to the arc-shaped protrusions and the two limiting wing rods. The two sides of the substrate body are provided with through-length slides 4210, through which the T-slot of the fan slides into a predetermined position, the bottom of the through-length slide corresponds to the middle of the fixed top screw hole, and the position corresponding to the fixed top screw hole is provided with an arc expansion groove 4211, which is the through-length slide opening toward the bottom wall of the substrate body.

[0037] like Figures 15 to 19 As shown, the fan back plate 223 includes a T-shaped base plate, which cooperates with the T-slot of the fan. An L-shaped groove 2231 is provided on one side of the small end wall of the T-shaped base plate, and a nail hole is provided in the middle. The connecting head 221 includes a U-shaped base plate. The two side plates of the U-shaped base plate are pressed against the two end plates of the notch of the T-slot of the fan. An L-shaped plug plate 2210 cooperating with the L-slot is convexly provided at the bottom of the groove of the U-shaped base plate. The bottom plate of the U-shaped base plate is provided with screw holes aligned with the nail holes. During the installation process, the fan back plate is inserted into the fan T-slot in advance, and the fan hinge finds the installation position on the upper and lower sides of the hinge, respectively. The bottom surface of the fan shell is close to the fan T-slot, and the fan back plate slides to the position of the fan shell. The fan back plate is snap-fitted and connected with the fan shell, and the nail holes of the fan back plate are aligned with the screw holes of the fan shell. The screws are tightened to realize the installation of the fan hinge.

[0038] The fan back plate above the fan housing will fall on the back of the fan housing. The addition of an L-shaped slot and an L-shaped plug plate structure can realize the two parts as a whole. When adjusting the height, the snap-fit ​​structure can avoid damage to the screws and connecting threads when loosening the screws, ensuring product stability, extending product life, avoiding the risk of the fan falling off, and improving safety and reliability. During installation, positioning is convenient and quick. The height adjustment block is inserted into the fan T-slot from the upper side of the hinge, and the bottom surface of the positioning vertical plate falls on the fan back plate of the fan hinge. Tighten the fixing top screw, and then drive the connecting screws to complete the installation of the height adjustment block. The fixing top screw and connecting screws of the height adjustment block ensure that the fan and the height adjustment block are fully connected and fixed to achieve high load-bearing adjustment.

[0039] The present invention realizes up and down adjustment and simplifies the hinge structure by using a separate height adjustment block separated from the hinge. Only one height adjustment block is installed above the lower sash housing. The connection between the hinge and the door and window frame, the sash connection, and the connection between the height adjustment block and the sash are all quick to install without processing, ensuring the integrity of the door and window and the stress strength.

Claims

1. A hinge adjustment structure for heavy doors and windows, characterized in that: The hinge fan part comprises a hinge fan part, a hinge frame part, a hinge shaft and a fan height adjustment block. The hinge fan part is respectively provided with the hinge frame part at both ends and is hinged to the hinge shaft. The side of the hinge fan part is provided with a fan profile and a fan housing. The guide part of the fan profile is provided with a threaded through hole, and an adjusting screw is screwed in the threaded through hole. Guide holes are provided on both sides of the threaded through hole. The two ends of the fan housing are connecting heads, and a U-shaped groove plate is provided between the two connecting heads. One side plate of the U-shaped groove plate is provided with two mounting holes opposite to the guide holes, and the other side plate of the U-shaped groove plate is provided with a screw through hole opposite to the mounting hole. There is a screw through hole between the two screw through holes. The head of the adjusting screw is opposite to the adjusting hole. First, screw the adjusting screw into the threaded through hole, then mate the guide part with the U-shaped groove, align the mounting hole with the guide hole, align the head of the adjusting screw with the adjusting hole, and then insert the two sliders into the mounting hole and the guide hole respectively. Insert the lower end of the fixing screw into the through hole of the slider through the mounting hole in turn and fix it through the screw through the hole. The fan profile is connected to the fan housing. The hinge frame part is fixed to the frame through the frame connection back plate. The head of the fan housing is connected to the fan through the fan back plate. The forward and reverse rotation of the adjusting screw can make the slider move the fan housing left and right along the guide hole to achieve left and right adjustment of the fan. The fan height adjustment block includes a positioning part, a height adjustment block, a connecting screw, a fixed top screw and an adjusting top screw. The positioning part is against the top wall of the fan back plate behind the lower fan shell, and the top of the height adjustment block is screwed with the adjusting top screw. The lower end of the adjusting top screw is against the top wall of the positioning part, and the upper end plug of the positioning part is inserted into the slide groove of the height adjustment block, so that the height adjustment block slides along the plug of the positioning part under the action of the adjusting top screw, and the height adjustment block is fixed to the fan by the fixed top screw; when the fan falls off, in order to ensure the sealing of the frame and the fan, when the sunken fan needs to be adjusted, first loosen the connecting screws between the upper and lower fan shells and the fan, and screw the adjusting top screw to move the fan upward and downward relative to the fan shell, and the positioning part does not move to achieve the height adjustment of the fan.

2. The hinge adjustment structure for heavy doors and windows according to claim 1, characterized in that: The hinge fan part includes a hinge shaft tube and a fan profile, and the fan profile includes a Z-shaped connecting plate and the guide part. The free end of the front side plate of the Z-shaped connecting plate is arranged on the hinge shaft tube facing the fan side, and the rear side of the free end of the rear side plate of the Z-shaped connecting plate is provided with a guide part, and the guide part includes an insert plate and an adjusting screw. One end of the insert plate is L-shaped and arranged on the rear side of the free end of the rear side plate of the Z-shaped connecting plate. Guide holes are provided at both ends of the insert plate, and a threaded through hole matching the adjusting screw is between the two guide holes. The width of the U-shaped groove of the U-shaped groove plate is greater than the thickness of the guide part. The two ends of the adjusting screw are respectively abutted against the two side plates of the U-shaped groove plate to realize the movement of the fan housing along the guide hole driven by the slider, thereby realizing the adjustment of the gap between the fan and the frame.

3. The hinge adjustment structure for heavy doors and windows according to claim 2, characterized in that: The positioning part includes a positioning vertical plate and a rail head arranged above the positioning vertical plate, the rail head includes a T-shaped plate arranged on the top wall of the positioning vertical plate, an arc-shaped convex column is arranged in front of the T-shaped plate, a narrow top head is arranged on the top of the arc-shaped convex column, and limiting wing rods are arranged on both sides of the bottom of the arc-shaped convex column.

4. The hinge adjustment structure for heavy doors and windows according to claim 3, characterized in that: The height adjustment block includes a substrate body, four corners of the substrate body are provided with fixed top screw holes, the middle part of the substrate body is provided with two connecting screw holes, the top of the substrate body is provided with an adjusting top screw hole, and a slide groove for inserting the rail head of the positioning part is provided below the adjusting top screw hole of the substrate body, the adjusting top screw is screwed in the adjusting top screw hole, and the adjusting top screw is abutted against the top wall of the rail head of the positioning part, and the two limiting wing rods are located between the two connecting screw holes and the fixed top screw hole below, and the two sides of the substrate body are provided with through-length slide grooves, through which the T-slot of the fan slides into a predetermined position, the bottom of the through-length slide groove corresponds to the middle part of the fixed top screw hole, and an arc-shaped expansion groove is provided at the position corresponding to the fixed top screw hole, and the arc-shaped expansion groove is opened to the bottom wall of the substrate body by the through-length slide groove.

5. A hinge adjustment structure for heavy doors and windows according to claim 1 or 4, characterized in that: The fan back plate includes a T-shaped base plate, which cooperates with the T-slot of the fan. An L-shaped groove is provided on one side of the small end of the T-shaped base plate, and a nail hole is provided in the middle. The connecting head includes a U-shaped base plate. The two side plates of the U-shaped base plate are pressed against the two end plates of the notch of the T-slot of the fan. An L-shaped plug plate that cooperates with the L-slot is convexly provided at the bottom of the groove of the U-shaped base plate. The bottom plate of the U-shaped base plate is provided with screw holes aligned with the nail holes. During the installation process, the fan back plate is inserted into the fan T-slot in advance, and the fan hinge finds the installation position on the upper and lower sides of the hinge, respectively. The bottom surface of the fan shell is close to the fan T-slot, and the fan back plate slides to the position of the fan shell. The fan back plate is connected with the fan shell by snapping, and the nail holes of the fan back plate are aligned with the screw holes of the fan shell. The screws are tightened to realize the installation of the fan hinge.

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