Buffer structure with light starting and closing force

Abstract

A light opening and closing force buffering structure comprises a shell, a damping rod installed in the shell, sliding blocks hinged to the two ends of the damping rod and a tension spring connected between the two sliding blocks, the two sliding blocks are the same in structure and symmetrical to each other, and the tension spring is hooked to the lower ends of the sliding blocks so that the sliding blocks can have deflection force rotating downwards. A guide groove allowing the sliding block to horizontally slide along the shell is formed in the shell, a downwards-bent limiting opening is formed in the end, away from the sliding block, of the guide groove, the included angle between the limiting opening and the guide groove is set to be 90 degrees, the outline of the limiting opening is matched with the guide column, the distance between the center point of the limiting opening and the bottom edge of the guide groove is set to be L, and the limiting opening is matched with the guide column. The distance L is larger than the radius R of the guide column and smaller than the diameter D of the guide column, L is larger than R so that the guide column cannot be easily separated from the limiting opening in the moving process of the sliding door, and the buffering effect is guaranteed; l is smaller than D, so that the guide post can be easily separated from the limiting opening when the sliding block is subjected to opening and closing force, pause is avoided, and the buffering process is smoother.

Description

Technical Field

[0001] The utility model relates to the technical field of sliding door slide rail buffer hanging wheels, in particular to a light opening and closing force buffer structure. Background Art

[0002] With the needs of society and the development of sliding doors, the suspended sliding doors on the market are now widely used in interior decoration because of their low noise, easy and beautiful installation, and no need to install tracks on the ground during installation.

[0003] For example, a Chinese utility model patent with patent application number CN202120517906.6 that appears on the market discloses a bidirectional buffer hanging wheel device for a shower room, comprising a buffer body, a hanging wheel assembly and a tail wheel assembly, the hanging wheel assembly and the tail wheel assembly are respectively connected at both ends of the buffer body, the buffer body comprises a shell, a slider, a damping rod, a spring and a baffle, two groups of guide grooves are arranged on the side wall of the shell, the guide groove is bent downward at one end close to the end of the shell, a slider is connected to each of the two groups of guide grooves, the two sliders are placed opposite to each other and are respectively connected to both ends of the damping rod and the spring, a limiting protrusion is arranged at the lower end of the baffle, an elastic triangular protrusion is arranged on the side of the upper end of the slider close to the downward bending of the guide groove, a fixed triangular protrusion is arranged on the other side of the upper end of the slider, the right-angled sides of the elastic triangular protrusion and the fixed triangular protrusion are relatively formed in the middle to form a bayonet, and the bayonet can be engaged with the limiting protrusion, the design structure is compact, firm and reliable, and the manufacturing cost is low.

[0004] However, in the above-mentioned two-way buffer structure, in order to enable the slider to stay at one end of the guide groove, a downwardly bent locking portion is provided at one end of the guide groove, and the guide column on the slider is locked into the locking portion. In order to make the sliding door smoother when opening or closing, the angle between the locking portion and the guide groove is usually set to be greater than or equal to 100°, so that the guide column can smoothly escape from the locking portion. However, in this structure, the guide column is easy to escape from the locking portion during the movement of the sliding door, which causes the damping rod to shrink prematurely and lose the buffering effect. Therefore, it is necessary to increase the elastic force of the spring to increase the downward deflection force of the slider. The larger elastic force will result in a larger opening and closing force to drive the slider. Generally, it needs to reach about 35N to drive the slider out of the locking portion. Otherwise, the sliding door is prone to setbacks during movement. The opening and closing force of the sliding door is generally about 10N. This larger opening and closing force will bring inconvenience to the user and will also cause certain damage to the structure of the buffer body. Therefore, a structure is needed that can reduce the opening and closing force after reducing the spring tension and still prevent the buffer hook from being easily unhooked. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a light opening and closing force buffer structure.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A light opening and closing force buffer structure comprises a shell, a damping rod movably installed in the shell, a slider hinged at both ends of the damping rod and a tension spring connected between the two sliders, the two sliders have the same structure and are symmetrical to each other, the tension spring is hooked on the lower end of the slider so that the slider has a deflection force for rotating downward, the shell is provided with a guide groove for the slider to slide horizontally along the shell, and guide columns for cooperating in the guide groove are provided on both sides of the slider, the guide columns are provided with two groups and are respectively located at the front and rear of the slider, and a downwardly bent limiting opening is provided at one end of the guide groove away from the slider. When the slider slides to the end of the guide groove, the guide column located at the front of the slider is downwardly clamped into the limiting opening under the action of the deflection force, the angle between the limiting opening and the guide groove is 90°, the contour of the limiting opening is adapted to the guide column, the distance between the center point of the limiting opening and the bottom edge of the guide groove is L, and the distance L is greater than the radius R of the guide column and less than the diameter D of the guide column.

[0008] In the utility model, the elastic force of the tension spring is greater than the sum of the opening and closing force on the door body and the resistance of the damping rod.

[0009] Furthermore, a hinge groove for hinged cooperation with the damping rod is provided on one end of the sliding block near the damping rod, and the hinge groove is on the same straight line as the two front and rear limit columns. A blocking portion for cooperating with the block is extended above the hinge groove, and the upward extending length of the blocking portion is L1. A hook portion for connecting a tension spring is extended below the hinge groove, and the downward delay length of the hook portion is L2. The torque generated by the opening and closing force through L1 is greater than the torque of the elastic force through the L2 parameter.

[0010] Furthermore, L1 is 1 / 2-2 / 3 times the length of L2.

[0011] In this embodiment, there is a fitting clearance between the guide column and the guide groove, and the fitting clearance is 0.1 mm.

[0012] The utility model has the following advantages and beneficial effects:

[0013] By setting the angle between the limit opening and the guide groove to 90°, the contour of the limit opening is adapted to the guide column, and the distance between the center point of the limit opening and the bottom edge of the guide groove is set to L. The distance L is greater than the radius R of the guide column and smaller than the diameter D of the guide column. When L is greater than R, the guide column will not easily disengage from the limit opening during the movement of the sliding door, thereby ensuring the buffering effect. When L is smaller than D, the guide column can easily disengage from the limit opening when the slider is subjected to the opening and closing force, without any sense of frustration, making the buffering process smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0015] Figure 1 Schematic diagram of the installation of the hanging wheel assembly in this embodiment;

[0016] Figure 2 This is a diagram of the internal structure of the buffer assembly in this embodiment;

[0017] Figure 3 is a schematic diagram of a buffer assembly in this embodiment;

[0018] Figure 4 for Figure 3 A magnified image of area A;

[0019] Figure 5 Schematic diagram of the structure of the slider in this embodiment. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model, but the utility model is not limited to the following embodiments.

[0021] like Figures 1 to 5As shown, this embodiment discloses a light lifting and closing force buffer structure, including a hanging wheel guide rail 1, a hanging wheel assembly 2 and a buffer assembly 3, wherein the hanging wheel assembly 2 is provided with two groups and is respectively installed at the two ends of the buffer assembly 3, the hanging wheel assemblies 2 at the two ends slide in the hanging wheel guide rail 1 with the buffer assembly 3, and a stopper 4 for driving the buffer assembly 3 to move is fixed on the top of the hanging wheel guide rail 1, and the buffer assembly 3 includes a shell 30, a damping rod 31 movably installed in the shell 30, a slider 32 hinged at the two ends of the damping rod 31 and a slider 32 connected to the two ends of the damping rod 31. The tension spring 33 between the sliders 32 has the same structure and is symmetrical to each other. The tension spring 33 is hooked on the lower end of the slider 32 so that the slider 32 always has a deflection force to rotate downward. The housing 30 is provided with a guide groove 300 for the slider 32 to slide horizontally along the housing 30. Both sides of the slider 32 are provided with guide columns 320 for sliding in the guide groove 300. At the same time, in order to keep the slider 32 balanced, the guide columns 320 are provided in two groups and are respectively located at the front and rear of the slider 32. The guide groove 300 is provided with a downwardly curved limit opening 301 at one end away from the slider 32. When the slider 32 slides to the end of the guide groove 300, the guide post 320 located at the front of the slider 32 is downwardly clamped into the limit opening 301 under the action of the deflection force. In order to ensure that the slider 32 will not easily escape from the limit opening 301, the angle between the limit opening 301 and the guide groove 300 is set at 90°. The angle of 90° ensures that the force of the guide post 320 on the limit opening 301 is always parallel to the guide groove 300. The contour of the limit opening 301 is matched with the guide column 320, and the distance between the center point of the limit opening 301 and the bottom edge of the guide groove 300 is L, and the distance L is greater than the radius R of the guide column 320 and less than the diameter D of the guide column 320. L is greater than R, so that the guide column 320 will not easily escape from the limit opening 301 during the movement of the sliding door, thereby ensuring the buffering effect; L is less than D, so that when the slider 32 is subjected to the opening and closing force, the guide column 320 can easily escape from the limit opening 301, without any sense of frustration, making the buffering process smoother.

[0022] Moreover, the buffer structure can adapt to door bodies of different weights by replacing tension springs 33 with different elastic forces and damping rods 31 with different resistances, so that the elastic force of the tension spring 33 is slightly larger than the sum of the opening and closing force on the door body plus the resistance of the damping rod 31. In this way, when the buffer structure is applied to door bodies of different weights, a light opening and closing force can be achieved, while ensuring that it will not be easily unhooked, thereby improving practicality.

[0023] Furthermore, an end of the slider 32 near the damping rod 31 is provided with a hinge groove 321 for hingedly cooperating with the damping rod 31, and the hinge groove 321 is in the same straight line as the two front and rear guide columns 320, and a stopper 322 for cooperating with the stopper 4 is extended above the hinge groove 321, and the length of the stopper 322 extending upward is L1, and a hooking portion 323 for connecting the tension spring 33 is extended below the hinge groove 321, and the hooking portion 323 is delayed downward. The length is L2. When the sliding door moves to open or close, the resisting portion 322 on the slider 32 presses against the block 4 to form an upward deflection force on the slider 32. This upward deflection force is greater than the downward deflection force given to the slider 32 by the tension spring 33, thereby causing the slider 32 to deflect upward. Therefore, the guide column 320 can disengage from the limit opening 301. As the sliding door continues to move, the block 4 drives the slider 32 to move along the guide groove 300 and compresses the damping rod 31, thereby achieving a buffering effect.

[0024] Specifically, according to the results of multiple tests, when the tension of the tension spring 33 on the slider 32 is 10N, and the opening and closing force applied to the slider 32 is 15-20N, the rotation is smoothest and the buffering effect on the sliding door is the best. Therefore, according to the torque formula: T=FL, in order to make the opening and closing force at the optimal size, it is necessary to control the length L1 to be between 1 / 2-2 / 3 times the length of L2; if the opening and closing force is less than 15N, it is necessary to increase the length of L1. If L1 is too long, it will affect the coordination between the slider 32 and the hanging wheel guide rail 1; similarly, if the opening and closing force is greater than 20N, it is necessary to reduce the length of L1, which will affect the coordination between the resisting portion 322 and the stopper 4.

[0025] In this embodiment, there is a fitting clearance between the guide column 320 and the guide groove 300. In order to prevent the guide column 320 from shaking and falling out of the limit opening 301 due to excessive clearance, the fitting clearance needs to be controlled at about 0.1 mm, thereby improving the stability of the slider 32.

[0026] The above contents described in this specification are merely examples of the present invention. Technicians in the technical field to which the present invention belongs can make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the contents of the present invention specification or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A light opening and closing force buffer structure, comprising a housing (30), a damping rod (31) movably mounted in the housing (30), a slider (32) hinged at both ends of the damping rod (31), and a tension spring (33) connected between the two sliders (32), wherein the two sliders (32) have the same structure and are symmetrical to each other, the tension spring (33) is hooked on the lower end of the slider (32) so that the slider (32) has a deflection force for rotating downward, and the housing (30) is provided with a guide groove (30) for the slider (32) to slide horizontally along the housing (30). 0), guide posts (320) for cooperating with the slide block (300) for sliding in the guide groove (300) are provided on both sides of the slide block (32), the guide posts (320) are provided in two groups and are respectively located at the front and rear of the slide block (32), and a downwardly curved limiting opening (301) is provided at one end of the guide groove (300) away from the slide block (32), when the slide block (32) slides to the end of the guide groove (300), the guide posts (320) located at the front of the slide block (32) are downwardly clamped into the limiting opening (301) under the action of the deflection force, characterized in that: The angle between the limiting opening (301) and the guide groove (300) is 90°, the profile of the limiting opening (301) is compatible with the guide column (320), the distance between the center point of the limiting opening (301) and the bottom edge of the guide groove (300) is L, and the distance L is greater than the radius R of the guide column (320) and less than the diameter D of the guide column (320).

2. A light opening and closing force buffer structure according to claim 1, characterized in that: The elastic force of the tension spring (33) is greater than the sum of the opening and closing force on the door body and the resistance of the damping rod (31).

3. The light opening and closing force buffer structure according to claim 1, characterized in that: An articulated groove (321) for articulating with the damping rod (31) is provided at one end of the slider (32) close to the damping rod (31); the articulated groove (321) and the two front and rear guide posts (320) are located on the same straight line; a stopper (322) for cooperating with the stopper (4) extends above the articulated groove (321); the stopper (322) extends upward by a length L1; a hook (323) for connecting to a tension spring (33) extends below the articulated groove (321); the hook (323) is delayed downward by a length L2; the torque generated by the opening and closing force through L1 is greater than the torque generated by the elastic force through the parameter L2.

4. The light opening and closing force buffer structure according to claim 3, characterized in that: L1 is 1 / 2-2 / 3 times the length of L2.

5. The light opening and closing force buffer structure according to claim 1, characterized in that: There is a fitting clearance between the guide column (320) and the guide groove (300), and the fitting clearance is 0.1 mm.

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