Handle vehicle door preassembling structure convenient to install

Abstract

The utility model relates to the technical field of automobile assembly, in particular to a handle automobile door preassembling structure convenient to install, which comprises a rack, an L-shaped vertical frame is welded at one end of the top of the rack, one end of the top of the rack is rotatably connected with a movable support, and the surface of the rack is fixedly connected with a bottom first limiting piece. A movable base is slidably connected to one side of the outer portion of the rack, and a second bottom limiting piece is fixedly connected to the surface of the movable base. The improved preassembling structure can adapt to framed and frameless vehicle doors with different sizes and thicknesses through the multiple adjustable limiting pieces and the frame hoop capable of being opened and closed, the adaptability to various vehicle doors is greatly improved, and when the handle mounting base is fixed in the vehicle door, the vehicle door has an efficient stable structure; and the displacement problem caused by operation is effectively avoided, then a basic condition is laid for follow-up handle butt joint, the magnetic suction plate is convenient to suck tools, the time for an operator to find and take the tools is shortened, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile assembly, in particular to a handle door pre-installation structure which is easy to install. Background Art

[0002] Automobile assembly refers to the process of combining, connecting, debugging and inspecting various automobile parts according to design requirements and process flow, and finally assembling them into complete automobile products. Among them, the door is an important part of the automobile body. The convenience and reliability of its assembly directly affect the production progress and quality of the entire vehicle.

[0003] Door handles provide a convenient way for drivers and passengers to enter and exit the vehicle with ease. However, before the handle is installed in the door, a handle mounting base usually needs to be embedded inside the door. During the automobile production process, due to the high installation precision requirements for door handles, the handle mounting base needs to be precisely positioned during installation to ensure that the mounting base is stable and does not shift in the door.

[0004] In the process of realizing the present invention, the inventors found that the existing technology has the following problems: 1. Since the handle mounting base is installed inside the vehicle door, after it is fixed, the vehicle door cover needs to be fixed to the vehicle door to close it. However, this may cause the handle mounting base to be touched. After the cover is closed, it is difficult for the operator to clearly observe the installation area and determine the condition of the surrounding components. 2. The size, shape and weight of doors of different models may vary greatly. For some doors with special shapes, the clamp can usually only fix specific parts at both ends of the door and cannot provide sufficient support and fixation for other parts of the door. This may cause the door to deform, twist or shake during assembly, affecting the accuracy of the handle mounting base and the accuracy of the fit between the door and the vehicle body. Some clamps with many fixing points are prone to interference with other parts of the door during loading and unloading, further limiting the convenience of operation. Utility Model Content

[0005] The purpose of the present invention is to provide a pre-installed structure for a handle door that is easy to install, so as to solve the problems proposed in the above-mentioned background technology that after the cover plate is closed, it is difficult for the operator to clearly observe the installation area and cannot determine the conditions of its surrounding components, and the clamps can usually only fix specific parts at both ends of the door and cannot provide sufficient support and fixation for other parts of the door. To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a handle door pre-installation structure that is easy to install, including a frame, an L-shaped frame welded at one end of the top of the frame, a movable bracket rotatably connected at one end of the top of the frame, a bottom first limit piece fixedly connected to the surface of the frame, a movable base slidably connected to the surface of the movable base, the bottom second limit piece and the bottom first limit piece are located at the same horizontal position and are located at one end of the bottom first limit piece, a first lead screw and a second lead screw are rotatably connected to one end of the interior of the frame respectively, the inner walls of the L-shaped frame and the movable bracket are fixedly connected with a left side limit piece and a right side limit piece respectively, the left side limit piece and the right side limit piece are arranged opposite to each other, and the bottom first limit piece and the bottom second limit piece are located at the left side limit piece. The cam is connected to the left and right lateral limit members by a bolt, and a fixed cylinder is provided at the bottom of the L-shaped frame beam plate. An adjustable cylinder is installed at one end of the fixed cylinder, and a third screw is rotatably connected to the inside of the L-shaped frame beam plate. The adjustable cylinder is sleeved on the outer wall of the third screw through a slider opened on its top and is threadedly connected to it. The power output ends of the fixed cylinder and the adjustable cylinder are fixedly connected to a top limit member, and the top limit member is located above the bottom first limit member and the bottom second limit member, and a pushing cylinder is installed on one side of the outer walls of the bottom first limit member, the bottom second limit member, the left lateral limit member and the right lateral limit member, and an elastic friction-increasing member is installed between the inner walls of the bottom first limit member, the bottom second limit member, the left lateral limit member and the right lateral limit member.

[0006] The top limiter is internally rotatably connected with gears, the gears are symmetrically distributed and meshed with each other, and the gears are rotatably connected with the frame hoop through a connecting rod.

[0007] Further preferably, one end of the movable base extends into a corresponding groove on one side of the outer wall of the frame, and is sleeved on the outer wall of the first screw and threadedly connected to it, and the bottom second limit member forms a horizontal transmission structure between the bottom first limit member and the left lateral limit member through the movable base.

[0008] Further preferably, one end of the bottom of the L-shaped frame extends to the interior of the frame and is sleeved on the outer wall of the second screw, and is threadedly connected to the second screw, and the left lateral limit member forms a horizontal transmission structure on the surface of the frame through the L-shaped frame, and at the same time, the left lateral limit member and the right lateral limit member are located above the bottom first limit member and the bottom second limit member.

[0009] Further preferably, the first bottom limiter is composed of a fixed bottom plate and a side plate, and the power output end of the pushing cylinder is fixedly connected to the side plate, and the side plate forms a telescopic structure at one end of the fixed bottom plate by pushing the cylinder, and the side plate is slidably connected to the slide groove on the surface of the fixed bottom plate, and at the same time, the elastic friction-increasing part is movably connected to the opposite side of the fixed bottom plate and the side plate surface through a spring, and the second limiter, the left side limiter and the right side limiter structure are consistent with the first bottom limiter.

[0010] Further preferably, the right side limit member is flipped 90 degrees on one side of the frame through a movable bracket, and one end of the frame corresponding to the movable bracket is threadedly connected to the limit screw, and one end of the movable bracket is penetrated to form a threaded through hole for threading the limit screw.

[0011] Further preferably, a magnetic suction plate is provided on one side of the outer wall of the L-shaped frame and the movable bracket, and one end of the outer wall of the L-shaped frame is rotatably connected to a mounting groove, and the interior of the mounting groove is snap-connected to a lighting lamp holder, and the lighting lamp holder is electrically connected to a battery fixed on one side of the outer wall of the L-shaped frame.

[0012] Further preferably, the gears form relative rotational motion, and the connecting rods form relative motion through the gears, and the frame hoop presents an opening and closing structure through the connecting rod, and the frame hoop is arc-shaped and its inner wall is covered with a rubber pad.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In the present invention, multiple adjustable limit members and openable and closable frame hoops can adapt to framed and frameless vehicle doors of different sizes and thicknesses, greatly improving the adaptability to various vehicle doors. The second limit member at the bottom can adjust its position according to the length of the vehicle door, the left side limit member can be adjusted according to the width of the vehicle door, the first limit member at the bottom can adapt to different vehicle door thicknesses, and the frame hoop can be fixed in different ways for framed and frameless vehicle doors. This design allows automobile manufacturers to process different types of vehicle doors on the same production line, so that when the handle mounting base is fixed in the vehicle door, the vehicle door has an efficient and stable structure, effectively avoiding displacement problems caused by operation, and thus laying the foundation for the subsequent docking of the handle.

[0015] In the present invention, the flip structure of the right-side limiter is convenient for loading and unloading the car door without causing interference and can cooperate to achieve multi-point clamping to ensure the stability of the car door installation. The magnetic suction plate is convenient for adsorbing tools, reducing the time for operators to find and retrieve tools, and improving work efficiency. At the same time, when installing the car door cover, the lighting holder can provide good lighting for the operator, so that possible problems inside can be discovered in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the movable bracket of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the frame of the utility model;

[0019] Figure 4 This is a schematic diagram of the partial structure of the L-shaped stand of the utility model;

[0020] Figure 5 This is a schematic diagram of the first limiting structure at the bottom of the utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the top limiter of the utility model.

[0022] In the figure: 1. Frame; 2. L-shaped frame; 3. Movable bracket; 4. First bottom limiter; 5. Mobile base; 6. Second bottom limiter; 7. First lead screw; 8. Second lead screw; 9. Left side limiter; 10. Right side limiter; 11. Fixed cylinder; 12. Adjustable cylinder; 13. Third lead screw; 14. Top limiter; 1401. Gear; 1402. Connecting rod; 1403. Frame hoop; 15. Pushing cylinder; 16. Elastic friction-increasing part; 17. Magnetic suction plate; 18. Mounting slot. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0024] See also Figures 1 to 6The utility model provides a technical solution: a handle door pre-installed structure that is easy to install, including a frame 1, an L-shaped frame 2 welded at one end of the top of the frame 1, a movable bracket 3 rotatably connected at one end of the top of the frame 1, a bottom first limit piece 4 fixedly connected to the surface of the frame 1, a movable base 5 slidably connected to the outer side of the frame 1, a bottom second limit piece 6 fixedly connected to the surface of the movable base 5, the bottom second limit piece 6 and the bottom first limit piece 4 are located at the same horizontal position and are located at one end of the bottom first limit piece 4, a first lead screw 7 and a second lead screw 8 are respectively rotatably connected to one end of the inner end of the frame 1, the inner walls of the L-shaped frame 2 and the movable bracket 3 are respectively fixedly connected with a left side limit piece 9 and a right side limit piece 10, the left side limit piece 9 and the right side limit piece 10 are arranged opposite to each other, and the bottom first limit piece 4 and the bottom second limit piece 6 are located between the left side limit piece 9 and the right side limit piece 10. The highest point of the top of the L-shaped frame 2 is provided with a beam plate parallel to the frame 1, and the bottom of the beam plate of the L-shaped frame 2 is connected to a fixed cylinder 11 by bolts, and an adjustable cylinder 12 is installed at one end of the fixed cylinder 11. The third screw 13 is rotatably connected to the inside of the beam plate of the L-shaped frame 2, and the adjustable cylinder 12 is sleeved on the outer wall of the third screw 13 through the slider opened at its top and is threadedly connected to it. The power output ends of the fixed cylinder 11 and the adjustable cylinder 12 are fixedly connected to a top limiter 14, and the top limiter 14 is located above the bottom first limiter 4 and the bottom second limiter 6. A pushing cylinder 15 is installed on one side of the outer wall of the bottom first limiter 4, the bottom second limiter 6, the left side limiter 9 and the right side limiter 10, and an elastic friction-increasing part 16 is installed between the inner walls of the bottom first limiter 4, the bottom second limiter 6, the left side limiter 9 and the right side limiter 10.

[0025] The top stopper 14 is internally rotatably connected to a gear 1401 . The gears 1401 are symmetrically distributed and meshed with each other. The gears 1401 are rotatably connected to a frame hoop 1403 via a connecting rod 1402 .

[0026] In this embodiment, Figure 1 and Figure 3As shown, one end of the movable base 5 extends to a groove corresponding to one side of the outer wall of the frame 1, and is sleeved on the outer wall of the first screw 7 and threadedly connected thereto, and the bottom second limiter 6 forms a horizontal transmission structure between the bottom first limiter 4 and the left lateral limiter 9 through the movable base 5; the bottom first limiter 4 and the bottom second limiter 6 are two groups of structures for mounting and clamping the bottom of the car door, and the bottom second limiter 6 can change its position according to the transmission structure of the first screw 7, and adjust the distance between the bottom second limiter 6 and the bottom first limiter 4 according to the specific size of the car door, so as to better adjust the position so that it is distributed correspondingly according to the specific size of the car door, and ensure that the car door is fixed at the best force application point, which helps to improve the accuracy and stability of the car door installation, reduce installation errors, and improve product quality.

[0027] In this embodiment, Figure 1 and Figure 3 As shown, one end of the bottom of the L-shaped frame 2 extends to the interior of the frame 1 and is sleeved on the outer wall of the second screw 8, and is threadedly connected to the second screw 8, and the left side limit member 9 forms a horizontal transmission structure on the surface of the frame 1 through the L-shaped frame 2, and at the same time, the left side limit member 9 and the right side limit member 10 are located above the bottom first limit member 4 and the bottom second limit member 6; the left side limit member 9 and the right side limit member 10 are located above the bottom first limit member 4 and the bottom second limit member 6, forming a stable clamping structure. This layout can effectively prevent the car door from shaking or displacing during the installation process, ensuring the stability and safety of the installation process, and the connection structure between the second screw 8 and the L-shaped frame 2 can adjust the position of the left side limit member 9 according to the width of different car doors, which greatly improves the adaptability of the pre-installed structure to car doors of various sizes.

[0028] In this embodiment, Figure 1 and Figure 5As shown, the first bottom limiter 4 is composed of a fixed bottom plate and a side plate, and the power output end of the pushing cylinder 15 is fixedly connected to the side plate, and the side plate forms a telescopic structure at one end of the fixed bottom plate by pushing the cylinder 15, and the side plate is slidably connected to the slide groove on the surface of the fixed bottom plate, and at the same time, the elastic friction-increasing member 16 is movably connected to the opposite side of the fixed bottom plate and the side plate surface through a spring, and the structure of the second bottom limiter 6, the left side limiter 9 and the right side limiter 10 are consistent with the first bottom limiter 4; the structural form between the plates of the first bottom limiter 4 can form an empty slot, and the car door can be mounted in this slot, and through Pushing the cylinder 15 to control the position of the side panel can achieve precise fixation of the car door, so that it can be adjusted according to the thickness of different car doors. It is suitable for car doors of various thicknesses, improves the versatility of the pre-installed structure, and reduces the cost of preparing different fixtures for car doors of different thicknesses. In addition, since there may be irregular shapes and protrusions on the surface of the car door, the elastic friction-increasing part 16 can adapt to these irregular parts through the elastic deformation of the spring, ensuring full contact with the car door surface, increasing friction, and improving the fixing effect. The elastic material on its surface can also reduce hard contact with the joints between the car door and effectively avoid damage to the car door surface.

[0029] In this embodiment, Figure 1 and Figure 2 As shown, the right side limit member 10 is flipped 90 degrees on one side of the frame 1 through the movable bracket 3, and one end of the frame 1 corresponding to the movable bracket 3 is threadedly connected to the limiting screw, and one end of the movable bracket 3 is penetrated to provide a threaded through hole for threading the limiting screw; the flipping structure of the right side limit member 10 makes the loading and unloading process before and after the assembly of the vehicle door extremely convenient. When in use, the right side limit member 10 together with other limit members realizes multi-point clamping to ensure the stability and accuracy of the vehicle door during the installation process, and can effectively prevent the vehicle door from being displaced, shaken or deformed. After it is flipped, it does not cause interference during loading and unloading, providing the operator with a larger operating space, and it is threadedly fixed to the frame 1 through the limiting screw, which can provide a large locking force to ensure that the movable bracket 3 remains stable in the required position.

[0030] In this embodiment, Figure 1 、 Figure 2 and Figure 3As shown, a magnetic suction plate 17 is respectively provided on one side of the outer wall of the L-shaped frame 2 and the movable bracket 3, and one end of the outer wall of the L-shaped frame 2 is rotatably connected to a mounting groove 18, and the interior of the mounting groove 18 is engaged and connected to a lighting lamp holder, and the lighting lamp holder is electrically connected to a battery fixed on one side of the outer wall of the L-shaped frame 2; in the process of installing the car door, various tools are often required, and the magnetic suction plate 17 can conveniently absorb small tools, such as screwdrivers, wrenches, etc., so that the tools are at the operator's hand at any time, which improves work efficiency. The operator does not need to frequently search for and take tools, which reduces operation time and labor intensity. After the handle mounting seat is fixed, the door cover is fixed. Since the handle mounting seat is located inside the car door, it is easy to be touched during operation. Combined with the lighting lamp holder set on the L-shaped frame 2, the operator can use the light of the lighting lamp holder to observe the internal situation through the gap of the cover or other relevant parts in time, and find possible problems in time, such as misalignment and looseness of components, so as to make adjustments and repairs to ensure installation quality.

[0031] In this embodiment, Figure 1 and Figure 6 As shown, the gears 1401 form a relative rotational motion, and the connecting rods 1402 form a relative motion through the gears 1401, and the frame hoop 1403 presents an opening and closing structure through the connecting rod 1402. At the same time, the frame hoop 1403 is arc-shaped and its inner wall is covered with a rubber pad; for framed doors, the frame hoop 1403 can clamp from both ends of the window frame to achieve fixation of the top of the door, and precise clamping and fixation are achieved through the movement of the gears 1401 and the connecting rod 1402. For frameless doors, the door can be fixed from both ends of the window frame. The opening and closing degree of the arc-shaped frame hoop 1403 is adjusted accordingly and the rubber pad covered on its inner wall can provide soft contact, which will not cause damage to the door and can ensure firm fixation. For automobile manufacturers, different types of doors can be processed on the same production line, thereby improving production efficiency and flexibility.

[0032] The use method and advantages of the utility model: The easy-to-install handle door pre-installed structure, when in use, the working process is as follows:

[0033] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6As shown, first place the car door in the bottom first limit piece 4 with the help of the transfer device, and push the car door inward. At the same time, it is necessary to make the edge end of the car door adjacent to the end where the frame 1 and the movable bracket 3 are connected. According to the size parameters of the car door, the position of the bottom second limit piece 6 is adjusted, and the power servo motor is started to drive the first screw 7 to rotate. The movable base 5 of the outer wall of the first screw 7 threadedly connected to its outer wall slides on the outer side of the frame 1. While sliding, the bottom second limit piece 6 moves accordingly toward the bottom first limit piece 4, and the distance between the bottom second limit piece 6 and the bottom first limit piece 4 is adjusted to adapt to the length of the car door, so as to ensure that the bottom of the car door is supported and preliminarily fixed at the best force application point. After determining the position of the bottom second limit piece 6, When the power is turned on, the power output ends of the pushing cylinders 15 outside the first and second limiting members 4 and 6 at the bottom simultaneously drive and push the corresponding side plates inside to slide in the slide grooves on the surface of the fixed bottom plate. The positions of the side plates are adjusted according to the thickness of the car door, so that the first and second limiting members 4 and 6 at the bottom tightly clamp the two ends of the bottom outer wall of the car door. At the same time, the elastic friction-increasing member 16 adapts to the irregular parts of the door surface through the elastic deformation of the spring, increases the friction force, and improves the fixing effect. After the first and second limiting members 4 and 6 at the bottom are fixed, first rotate the limiting screw on the surface of the movable bracket 3 to separate the shaft head of the limiting screw from the threaded groove of the movable bracket 3, flip the movable bracket 3 to make it perpendicular to the frame 1, and then rotate the limiting screw in the opposite direction again. The screw rod fixes the movable bracket 3 to the frame 1 through the limit screw thread, and adjusts the position of the L-shaped stand 2 according to the size parameters of the car door. The second screw 8 of the power supply is started to rotate, and the L-shaped stand 2 moves to one end of the bottom second limiter 6 under the transmission structure until the groove formed by the left side limiter 9 fixing the bottom plate and the side plate covers the two outer ends of the car door at the upper end, which is consistent with the operation of the bottom first limiter 4 and the bottom second limiter 6. The two ends of the car door are fixed by pushing the cylinders 15 on the outside of the left side limiter 9 and the right side limiter 10 respectively, and according to the position of the car door at this time, the position of one group of top limiters 14 is adjusted through the transmission structure of the third screw 13 and the adjustable cylinder 12 to complete the position of the top limiter 14. After the positioning is completed, the power supply is started, and the power output ends of the fixed cylinder 11 and the adjustable cylinder 12 are driven, and the top limit piece 14 is lowered. At the same time as the top limit piece 14 is lowered, one set of gears 1401 is driven to rotate by the servo motor, thereby causing the other set of meshing gears 1401 to rotate in the opposite direction. As a result, the two sets of connecting rods 1402 rotate according to the rotation direction of the corresponding gears 1401, and finally the frame hoop 1403 is retracted. When it comes to framed doors, the frame hoop 1403 is respectively clamped from both ends of the window frame to fix the top of the door, and when it comes to frameless doors, the angle of the frame hoop 1403 is relatively larger, and the door is fixed from both ends of the window frame. After the door is fixed by multiple sets of limiting components in different directions,On this basis, the operator can complete the installation of the handle base. Multiple sets of limit assemblies effectively prevent displacement during the installation process. During this process, the operator can adsorb small tools on the magnetic suction plate 17 on the outer wall of the L-shaped frame 2 and the movable bracket 3, making them convenient to use at any time, improving work efficiency. At the same time, after the handle mounting base is fixed and the door cover is assembled, if there is a concern about touching the handle mounting base or needing to check the internal condition, the operator can flip the mounting groove 18 on the outer wall of the L-shaped frame 2 and install the lighting holder in the groove 18. With the help of the lighting light, the operator can observe the internal condition of the door through the gap in the cover, so as to find problems in time and make adjustments and repairs.

[0034] The above shows and describes the basic principles, main features, and advantages of the present invention. Persons skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A handle door pre-installed structure that is easy to install, comprising a frame (1), characterized in that: An L-shaped vertical frame (2) is welded to one end of the top of the frame (1), a movable bracket (3) is rotatably connected to one end of the top of the frame (1), a first bottom limiter (4) is fixedly connected to the surface of the frame (1), a movable base (5) is slidably connected to the outer side of the frame (1), a second bottom limiter (6) is fixedly connected to the surface of the movable base (5), and the second bottom limiter (6) and the first bottom limiter (4) are located at the same horizontal position and are located at one end of the first bottom limiter (4). One end of the interior of the frame (1) is rotatably connected to a first screw (7) and a second screw (8), and the inner walls of the L-shaped stand (2) and the movable bracket (3) are fixedly connected to a left-side limiter (9) and a right-side limiter (10), respectively. The left-side limiter (9) and the right-side limiter (10) are arranged opposite to each other, and the bottom first limiter (4) and the bottom second limiter (6) are located between the left-side limiter (9) and the right-side limiter (10). The highest point of the top of the L-shaped stand (2) is opened. There is a beam plate parallel to the frame (1), and the bottom of the L-shaped frame (2) beam plate is connected to a fixed cylinder (11) through bolts, one end of the fixed cylinder (11) is installed with an adjustable cylinder (12), the inside of the L-shaped frame (2) beam plate is rotatably connected to a third screw (13), the adjustable cylinder (12) is sleeved on the outer wall of the third screw (13) through a slider opened on the top and is threadedly connected to it, the power output ends of the fixed cylinder (11) and the adjustable cylinder (12) are fixedly connected to the top A limiting member (14), wherein the top limiting member (14) is located above the first bottom limiting member (4) and the second bottom limiting member (6); a pushing cylinder (15) is installed on one side of the outer wall of the first bottom limiting member (4), the second bottom limiting member (6), the left side limiting member (9) and the right side limiting member (10); and an elastic friction increasing member (16) is installed between the inner walls of the first bottom limiting member (4), the second bottom limiting member (6), the left side limiting member (9) and the right side limiting member (10); The top stopper (14) is internally rotatably connected to a gear (1401), the gears (1401) are symmetrically distributed and meshed with each other, and the gears (1401) are rotatably connected to a frame hoop (1403) via a connecting rod (1402).

2. The easy-to-install handle door pre-installed structure according to claim 1, characterized in that: One end of the movable base (5) extends into a corresponding notch on one side of the outer wall of the frame (1), and is sleeved on the outer wall of the first lead screw (7) and threadedly connected thereto, and the second bottom limiter (6) forms a horizontal transmission structure between the first bottom limiter (4) and the left side limiter (9) through the movable base (5).

3. The easy-to-install handle door pre-installed structure according to claim 1, characterized in that: One end of the bottom of the L-shaped stand (2) extends to the inside of the frame (1) and is sleeved on the outer wall of the second lead screw (8), and is threadedly connected to the second lead screw (8), and the left side limiter (9) forms a horizontal transmission structure on the surface of the frame (1) through the L-shaped stand (2), and the left side limiter (9) and the right side limiter (10) are located above the first bottom limiter (4) and the second bottom limiter (6).

4. The easy-to-install handle door pre-installed structure according to claim 1, characterized in that: The first bottom limiter (4) is composed of a fixed bottom plate and a side plate, and the power output end of the pushing cylinder (15) is fixedly connected to the side plate, and the side plate forms a telescopic structure at one end of the fixed bottom plate by pushing the cylinder (15), and the side plate is slidably connected to the sliding groove on the surface of the fixed bottom plate, and at the same time, the elastic friction-increasing member (16) is movably connected to the opposite side of the fixed bottom plate and the side plate surface through a spring, and the structures of the second bottom limiter (6), the left side limiter (9) and the right side limiter (10) are consistent with those of the first bottom limiter (4).

5. The easy-to-install handle door pre-installed structure according to claim 1, characterized in that: The right side limiting member (10) is in a 90-degree flip structure on one side of the frame (1) through the movable bracket (3), and one end of the frame (1) corresponding to the movable bracket (3) is threadedly connected to the limiting screw, and one end of the movable bracket (3) is penetrated to form a threaded through hole for threading the limiting screw.

6. The easy-to-install handle door pre-installed structure according to claim 1, characterized in that: A magnetic suction plate (17) is respectively provided on one side of the outer wall of the L-shaped stand (2) and the movable bracket (3), and one end of the outer wall of the L-shaped stand (2) is rotatably connected to a mounting groove (18), and the interior of the mounting groove (18) is engaged and connected to a lighting lamp holder, and the lighting lamp holder is electrically connected to a battery fixed on one side of the outer wall of the L-shaped stand (2).

7. The easy-to-install handle door pre-installed structure according to claim 1, characterized in that: The gears (1401) form relative rotational motion, and the connecting rods (1402) form relative motion through the gears (1401), and the frame hoop (1403) presents an opening and closing structure through the connecting rod (1402), and the frame hoop (1403) is arc-shaped and its inner wall is covered with a rubber pad.

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