A quick-insertion handle with anti-pull-out force

Abstract

The present invention discloses a quick-insertion handle with anti-pull-out force, comprising a handle, a square shaft, a rotating mechanism for realizing the rotation of the square shaft, and a clamping mechanism for clamping the square shaft; the clamping mechanism comprises a sleeve assembly and a clamping spring fixedly mounted on the top of the sleeve, the sleeve is fixedly mounted on the bottom of the handle, a first spring and a clamping piece are arranged inside the sleeve, the clamping piece is located between the top of the first spring and the sleeve, and the clamping spring, sleeve and clamping piece are all sleeved on the lower end of the side wall of the square shaft. The present invention has a reasonable structural design, effectively improves the reliability of the handle during use, and reduces the potential safety hazards during use of the handle. At the same time, in the present invention, the square shaft is easy to install and disassemble, thereby achieving faster and more effective installation and maintenance.

Description

Technical Field

[0001] The invention relates to the field of door and window accessories, and in particular to a quick-insertion handle with anti-pull-out force. Background Art

[0002] The handle is a device installed on the door and window sashes to have the function of opening and closing. It is mostly made of aluminum alloy, copper, stainless steel, organic glass, plastic and other materials. It has various forms and sizes. In addition to meeting the requirements of comfortable hand feeling and reasonable force, it also has a decorative effect. Therefore, the materials and shapes are selected according to the requirements of architectural design.

[0003] Handles are indispensable components on doors and windows. The positioning method of handles mostly used in modern buildings is generally to connect them directly to the profiles with screws. After the handles are used many times, they will inevitably become loose or have loose connections, which brings inconvenience to users, especially brings certain safety hazards, cannot meet the needs of users, and affects the user experience. There is room for improvement. In addition, on the market, the handles in the handles are mostly connected to their internal structures by screws. After a period of use, the screws are prone to loosening. Therefore, fastening glue is generally applied to the screws, and the installation is cumbersome. Once assembled, they cannot be disassembled, and there is a risk of fastening glue failure after long-term use. At the same time, the square shaft installation used in the internal structure of the handles on the market mostly adopts interference fit and modular structure. When the handles need to be replaced, it is difficult to disassemble and more troublesome to install, which has certain defects. Summary of the invention

[0004] The purpose of the present invention is to provide a quick-insert handle with anti-pull-out force, which improves the reliability of the handle during use, reduces the potential safety hazards during use of the handle, and facilitates people to replace the square shaft in the handle.

[0005] The present invention is achieved in that:

[0006] A quick-insertion handle with anti-pull-out force, comprising a handle, a square shaft, a rotating mechanism for realizing the rotation of the square shaft, and a clamping mechanism for clamping the square shaft;

[0007] The clamping mechanism includes a sleeve assembly and a clamping spring fixedly installed on the top of the sleeve. The sleeve assembly is fixedly installed on the bottom of the handle. A first spring and a clamping plate are arranged inside the sleeve. The first spring is connected to the clamping plate, and the clamping plate is located between the top of the first spring and the sleeve. The clamping spring, sleeve and clamping plate are all sleeved on the lower end of the side wall of the square shaft.

[0008] The rotating mechanism includes a positioning flange movably mounted on the side wall of the square shaft at a position directly above the retaining spring sheet and a base movably mounted on the side wall of the square shaft at a position directly above the positioning flange. The base is movably mounted in the handle, and a mounting circular groove is provided on the bottom surface of the base. A rotating disk is provided in the mounting circular groove, and the rotating disk is fixedly mounted on the square shaft. A plurality of triangular protrusions are integrally formed on the bottom surface of the rotating disk, and a plurality of triangular grooves meshing with the protrusions are provided on the top surface of the positioning flange. A plurality of second springs are connected to the top surface of the positioning flange at uniform circumferential intervals. The second spring is provided at one end of the positioning flange and is connected to the top surface of the mounting circular groove.

[0009] A plurality of mounting holes are formed through the top surface of the base, and a fixing groove for mounting a rivet stud is formed at the top surface of the base at the position of the mounting holes.

[0010] There are four triangular protrusions and four triangular grooves, and the four triangular protrusions and four triangular grooves are arranged at uniform circumferential intervals on the bottom surface of the rotating disk and the top surface of the positioning flange respectively.

[0011] The present invention has a reasonable structural design, which effectively improves the reliability of the handle during use and reduces the potential safety hazards during use. At the same time, in the present invention, the square shaft is easy to install and disassemble, thereby effectively facilitating the replacement of the square shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the quick-connect handle with anti-pull-out force of the present invention;

[0013] Figure 2 It is a schematic diagram of the engagement between the triangular protrusion and the triangular groove of the quick-connect handle with anti-pull-out force of the present invention;

[0014] Figure 3 It is a schematic diagram of the overall structure of the quick-connect handle with anti-pull-out force of the present invention when the base is a large base;

[0015] Figure 4 It is a projection principle diagram of a quick-insertion handle with anti-pull-out force and a square shaft;

[0016] Figure 5 It is a schematic diagram of the fixing groove structure of the quick-connect handle with anti-pull-out force of the present invention;

[0017] Figure 6 It is a schematic cross-sectional view of the structure of the quick-insertion handle with anti-pull-out force of the present invention in a free state after the clamping spring and the clamping piece are installed with the square shaft;

[0018] Figure 7The present invention is a schematic top view of the structure of a quick-insertion handle with anti-pull-out force in a free state after the clamping spring and the clamping plate are installed with a square shaft.

[0019] In the figure, 1. handle; 2. square shaft; 3. rotating mechanism; 4. clamping mechanism; 5. sleeve; 6. retaining spring; 7. first spring; 8. clamping plate; 9. positioning flange; 10. base; 11. rotating disk; 12. second spring; 13. fixing groove; 14. mounting hole. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] Please see attached Figure 1 To Attachment Figure 7 , a quick-insertion handle with anti-pull-out force, comprising a handle 1, a square shaft 2, a rotating mechanism 3 for realizing the rotation of the square shaft 2, and a clamping mechanism 4 for clamping the square shaft 2;

[0022] The clamping mechanism 4 includes a sleeve 5 and a clamping spring 6 fixedly installed on the top of the sleeve 5. The sleeve 5 is fixedly installed on the bottom of the handle 1. A first spring 7 and a clamping plate 8 are arranged inside the sleeve 5. The first spring 7 is connected to the clamping plate 8, and the clamping plate 8 is located between the top of the first spring 7 and the sleeve 5. The clamping spring 6, sleeve 5 and clamping plate 8 are all sleeved on the lower end of the side wall of the square shaft 2. When the square shaft 2 is inserted into the square hole of the spring clip 6, the spring clip 6 is bent instantaneously by pressing the square shaft 2, forcing the square shaft 2 to pass through the spring clip 6. When the square shaft 2 is pulled out during use, the spring clip 6 clamps the square shaft 2 and, under the reaction force of the spring, makes the square shaft 2 more and more tightly pulled out, and finally not pulled out. In this process, the basic mathematical principle of changing the angle of the spring clip 6 to reduce the projected area of ​​the square shaft hole is used. Assume that the bending angle of the spring clip 6 is α, the actual area of ​​the square shaft 2 is a, the projected area of ​​the square shaft 2 is b, the projected area margin is c, and the mathematical formula cosα=b / a, b+c≈a is satisfied. When the square shaft 2 is inserted, the spring clip 6 is bent instantaneously at an angle close to zero under the action of the elastic force, forcing the square shaft 2 to pass through the square hole. At this time, the projected area b of the square shaft 2 is close to the actual area a, so cos0°≈b / a=1. When the square shaft 2 is pulled out, the spring sheet 6 rebounds to a bending angle slightly larger than the preset angle under the action of elastic force, thereby quickly tightening the square shaft 2. At this time, the larger the spring angle, the smaller the projected area of ​​the square shaft 2, and the square shaft 2 is pulled tighter and tighter. At this time, the projected area b of the square shaft 2 is smaller than the actual area a, so cosα°=b / a<1. When the square shaft 2 is released, the spring sheet 6 returns to the initial bending angle to achieve the positioning of the other shaft 2; when the square shaft 2 is inserted into the square hole of the clamping sheet 8, the first spring 7 contracts instantly, and the square shaft 2 passes through the clamping sheet 8 to achieve the clamping of the other shaft 2. When the square shaft 2 is pulled out, under the reaction force of the first spring 7, the clamping sheet 8 bites the wall of the square shaft 2 and pulls the square shaft 2 tightly to fix it. The above mathematical principles are also used in this process. In addition, during long-term use, the spring sheet 6 is fatigued due to insufficient elastic force. When the square shaft 2 is damaged, due to the setting of the first spring 7, under the condition of preload force, the square shaft 2 is promptly and effectively supported, forcing the retaining spring 6 to clamp the square shaft 2 again, which plays a safe and effective protective measure. In the present clamping mechanism 4, after the retaining spring 6 and the clamping plate 8 are installed with the square shaft 2, in the free state, the angle between the retaining spring 6 and the clamping plate 8 and the end face of the square shaft 2 is 45°. At this time, the four side walls of the square hole of the retaining spring 6 and the clamping plate 8 are in close contact with the four side walls of the square shaft 2 respectively, while traditional clamping mechanisms are mostly parallel line insertion clamping, which can only be clamped and fixed on both sides. Compared with traditional clamping mechanisms, the present clamping mechanism 4 is more stably stressed, and in the present clamping mechanism 4, the square shaft 2 does not need to be fixed by a top screw. At this time, only a specific wrench is needed to fluctuate the retaining spring to release the square shaft 2. The operation is simple, and it is convenient to replace the square shaft 2.

[0023] The rotating mechanism 3 includes a positioning flange 9 movably mounted on the side wall of the square shaft 2 at a position directly above the retaining spring 6 and a base 10 movably mounted on the side wall of the square shaft 2 at a position directly above the positioning flange 9. The base 10 is movably mounted in the handle 1. A mounting circular groove is provided on the bottom surface of the base 10. A rotating disk 11 is provided in the mounting circular groove, and the rotating disk 11 is fixedly mounted on the square shaft 2. A plurality of triangular protrusions are integrally formed on the bottom surface of the rotating disk 11, and a plurality of triangular grooves meshing with the protrusions are provided on the top surface of the positioning flange 9. A plurality of second springs 12 are connected to the top surface of the positioning flange 9 at uniform circumferential intervals. The second spring 12 is provided at one end of the positioning flange 9 and is connected to the top surface of the mounting circular groove. The triangular protrusion is meshed with the triangular groove, and the second spring 12 is used to screw in and out during rotation. The second spring 12 can also be adjusted according to the popular hand feel and operating force to make the handle more comfortable when rotating. The base 10 in the rotating mechanism 3 can be interchanged between the small base and the large base while other structures remain unchanged. If the large base is used, two more fixing screw holes are added on the original basis, which makes it more firm and durable to use.

[0024] The top surface of the base 10 is provided with a plurality of mounting holes 14, and the top surface of the base 10 is provided with a fixing groove 13 for installing the head of the rivet stud at the position of the mounting hole 14. The setting of the fixing groove 13 allows the rivet stud to be riveted on the profile when the self-tapping screw cannot be effectively fastened, and the machine screw can be used for installation to achieve the purpose of fastening.

[0025] There are four triangular protrusions and four triangular grooves, and the four triangular protrusions and four triangular grooves are arranged at uniform circumferential intervals on the bottom surface of the rotating disk 11 and the top surface of the positioning flange 9. There are four triangular protrusions and four triangular grooves, so that the handle 1 can rotate freely within every 90° angle.

[0026] When installing the handle, first select the type of base 10 according to actual conditions, and choose whether to add rivet studs in the profile mounting hole 14 according to actual conditions, then install the rotating mechanism 3 and the clamping mechanism 4 on the square shaft 2 in sequence, then install the base 10 on the profile, and finally insert the handle 1 from the end of the square shaft 2 close to the sleeve 5, so that the sleeve 5 enters the corresponding position in the handle 1, and then fix it on the handle 1 to complete the installation between the handle and the profile. When the handle is used for a long time, the square shaft 2 will inevitably loosen. At this time, the square shaft 2 is instantly lifted up by the reaction force of the first spring 7, so that the retaining spring 6 clamps the square shaft 2 again. At this time, the "empty stroke" during pulling is solved, the fatigue times of the handle after long-term use are increased, the safety hazards are reduced, and the reliability is improved.

[0027] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A quick-insertion handle with an anti-pull-out force, comprising a handle (1), a square shaft (2), a rotating mechanism (3) for realizing the rotation of the square shaft (2), and a clamping mechanism (4) for clamping the square shaft (2); Its characteristics are: The clamping mechanism (4) comprises a sleeve (5) and a clamping spring (6) fixedly mounted on the top of the sleeve (5); the sleeve (5) is fixedly mounted on the inner bottom of the handle (1); a first spring (7) and a clamping spring (8) are arranged inside the sleeve (5); the first spring (7) is connected to the clamping spring (8), and the clamping spring (8) is located between the top of the first spring (7) and the sleeve (5); the clamping spring (6), the sleeve (5) and the clamping spring (8) are all sleeved on the lower end of the side wall of the square shaft (2); the rotating mechanism (3) comprises a positioning flange (9) movably sleeved on the side wall of the square shaft (2) at a position directly above the clamping spring (6) and a positioning flange (9) movably sleeved on the side wall of the square shaft (2) ) a base (10) whose side wall is located directly above the positioning flange (9), the base (10) being movably mounted in the handle (1), the bottom surface of the base (10) being provided with a mounting circular groove, a rotating disk (11) being arranged in the mounting circular groove, and the rotating disk (11) being fixedly mounted on the square shaft (2), the bottom surface of the rotating disk (11) being integrally formed with a plurality of triangular protrusions, and the top surface of the positioning flange (9) being provided with a plurality of triangular grooves meshing with the protrusions, the top surface of the positioning flange (9) being connected with a plurality of second springs (12) at uniform circumferential intervals, the second spring (12) being arranged at one end of the positioning flange (9) and connected to the top surface of the mounting circular groove; A plurality of mounting holes (14) are formed through the top surface of the base (10), and a fixing groove (13) for mounting a rivet stud is formed on the top surface of the base (10) at the position of the mounting holes (14); There are four triangular protrusions and four triangular grooves, and the four triangular protrusions and four triangular grooves are arranged at even circumferential intervals on the bottom surface of the rotating disk (11) and the top surface of the positioning flange (9).

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