Damping joint

Abstract

The utility model relates to a damping joint which comprises a joint seat and a swing part which are positioned together through a vertical bolt shaft. A movement gap exists between a shaft protrusion of the swing part and a shaft groove of the joint seat, and a gasket pair with damping is arranged between the two faces of the shaft protrusion and the shaft groove in a cushioned mode and is pre-tightened by a bolt shaft penetrating through the gasket pair. The gasket pair is composed of a first gasket embedded in the surface of the shaft protrusion and a second gasket located on one side of the shaft groove. The swing part is vertically positioned on the joint seat, and the gasket pair is arranged in the fit clearance between the swing part and the joint seat, so that proper damping force can be formed, the contact surface is reduced, and left-right rotation is smoother; in addition, the damping force can be adjusted through the bolt shaft and maintained by the dish-shaped gasket. The device has the characteristics of reasonable design, simple structure and convenience in adjustment.

Description

Technical fields:

[0001] This utility model relates to a damping joint, which can be particularly used in monitor brackets to meet the needs of swing self-positioning. Background technology:

[0002] The monitor stand should allow for tilt and lateral adjustment. To achieve self-positioning, a reliable damping design is required. For example:

[0003] CN202320666123.3 discloses a hybrid bracket adapter assembly, including a connecting plate for fixing a display, a positioning shaft, a hinge seat, a torsion spring, and a friction assembly. The connecting plate is rotatably positioned on the hinge seat via the positioning shaft, and the torsion spring and friction assembly maintain their load-bearing function. The hinge seat has a flat shaft head and a shaft connection portion that can connect to the bracket shaft. A double-eared support is provided at the rear of the connecting plate, which clamps both sides of the flat shaft head and is positioned by the positioning shaft. The friction assembly is installed between the contact surfaces of the double-eared support and the flat shaft head. The torsion spring is disposed inside the flat shaft head, with its two ends inserted into the flat shaft head and the double-eared support, respectively. This design combines a torsion spring with end-face friction damping, providing both good load-bearing capacity and significant friction damping force.

[0004] CN202323089319.X discloses a monitor bracket adapter, including a connecting plate assembly for fixing the monitor and a hinge seat for axially connecting the bracket. The connecting plate assembly is positioned on the flat shaft head of the hinge seat by means of a double-ear support via a pitch axis. Friction components and torsion springs are symmetrically arranged on both sides of the flat shaft head and the double-ear support. The resistance of the friction components is adjusted by means of an adjusting bolt at one end of the pitch axis.

[0005] The above mainly addresses pitch angle adjustment, which requires solving the load-bearing problem. While the left and right swing joint structure is relatively simple, it still needs to address the torque caused by gravity, leading to localized wear of mating parts. Therefore, providing a more reasonable technical solution is the object of this invention. Summary of the Invention:

[0006] The purpose of this invention is to design a damping joint that can reduce wear and provide smooth adjustment.

[0007] The present invention is implemented as follows: a damping joint includes a joint seat and a swing member, which are positioned together by a vertical bolt shaft; characterized in that: there is a movement gap between the shaft protrusion of the swing member and the shaft groove of the joint seat, and a damping shim pair is provided between the two sides of the shaft protrusion and the shaft groove, and the bolt shaft through which it passes is pre-tightened; the shim pair consists of a first shim embedded on the surface of the shaft protrusion and a second shim located on one side of the shaft groove.

[0008] The gasket assembly is formed from plastic, nylon, or ceramic materials. The non-friction surface of the first gasket has several protrusions, which are embedded in the recesses of the convex surface of the swing component shaft to form an anti-rotation positioning. The second gasket is free between the first gasket and the shaft groove.

[0009] The joint seat has two groove walls. The shaft hole in one groove wall is larger than the diameter of the bolt head and is equipped with a thickened shim. The thickened shim abuts against the second shim to adjust the tightness.

[0010] The shaft hole that mates with the bolt head is an inverted conical hole, and the thickened shim that mates with it is an inverted conical plastic part with axial anti-rotation strips evenly distributed on its surface. The axial anti-rotation strips are used to make an interference fit with the shaft hole. A disc-shaped shim is also provided between the thickened shim and the bolt head.

[0011] The movement gap between the axial protrusion of the swing member and the axial groove of the joint seat is provided by a protrusion at the bottom of the axial groove and a corresponding arc-shaped stroke groove on the edge of the axial protrusion. The two work together to constrain the swing stroke of the swing member.

[0012] This utility model's swing component is vertically positioned on the joint seat, with a shim pair placed in the gap between the two. This not only creates appropriate damping force but also reduces the contact area, resulting in smoother left and right rotation. Furthermore, the damping force can be adjusted via a bolt shaft and maintained by a disc-shaped shim. It features a reasonable design, simple structure, and convenient adjustment. Attached image description:

[0013] The invention will be further described below with reference to specific figures:

[0014] Figure 1 Schematic diagram of a damping joint

[0015] Figure 2 Schematic diagram of the damped joint cross section

[0016] Figure 3 Schematic diagram of damped joint breakdown

[0017] in

[0018] 1—Joint seat; 11—Shaft groove; 111—Protrusion; 12—Groove wall; 13—Shaft hole;

[0019] 2—Oscillating component; 21—Shaft protrusion; 211—Concave / convex groove; 212—Arc-shaped stroke groove;

[0020] 3—bolt shaft; 31—bolt head;

[0021] 4—Gasket pair; 41—First gasket; 411—Protruding post; 42—Second gasket;

[0022] 5—Thickened gasket; 51—Axial anti-rotation strip; 6—Disc-shaped gasket; Detailed implementation method:

[0023] Reference Figure 1 , Figure 2 and Figure 3 The damping joint includes a joint seat 1, a swing member 2, and a bolt shaft 3; the joint seat 1 and the swing member 2 are made of cast aluminum. The joint seat 1 has a shaft groove 11 machined on one side, and the swing member 2 has a shaft protrusion 21 that mates with it on one side, or the opposite structure is also possible.

[0024] There is a movement gap between the shaft protrusion 21 of the swing member and the shaft groove 11 of the joint seat. Damped shim pairs 4 are provided between the two sides of the shaft protrusion 21 and the shaft groove 11, and the bolt shaft 3 that is passed through is pre-tightened. The shim pairs 4 isolate the swing member 2 from direct contact with the joint seat 1 to avoid wear.

[0025] The gasket assembly 4 is made of plastic, nylon, or ceramic material and consists of a first gasket 41 embedded on the surface of the shaft convex and a second gasket 42 located on one side of the shaft groove. The non-friction surface of the first gasket 41 has several protrusions 411, which are embedded in the recesses 211 on the surface of the oscillating member shaft convex 21 to form an anti-rotation positioning. The second gasket 42 is free between the first gasket 41 and the shaft groove 11, or more specifically, free between the groove walls 12 on both sides of the shaft groove and the first gasket 41.

[0026] The joint seat has two groove walls 12. One groove wall has a shaft hole 13 larger than the diameter of the bolt head 31 and is fitted with a thickened shim 5. The thickened shim 5 abuts against the second shim 42 to adjust the tightness. Furthermore, the shaft hole 13 that mates with the bolt head is an inverted conical hole. The thickened shim 5 is a mating inverted conical plastic part with axial anti-rotation strips 51 evenly distributed on its surface. The axial anti-rotation strips 51 are interference-fitted with the shaft hole 13 to prevent the bolt shaft from rotating during adjustment. A disc-shaped shim 6 is also provided between the thickened shim 5 and the bolt head 31 to generate a certain preload.

[0027] Furthermore, the movement gap between the shaft protrusion 21 of the swing member and the shaft groove 11 of the joint seat is addressed by a protrusion 111 at the bottom of the shaft groove 11 and a corresponding arc-shaped travel groove 212 on the edge of the shaft protrusion 21. The two work together to constrain the swing stroke of the swing member 2.

Claims

1. A damping joint, comprising a joint seat and a rocker element, the two being positioned together by a vertically oriented bolt axis; characterized in that: There is a movement gap between the shaft protrusion of the swing component and the shaft groove of the joint seat. A damped shim pair is provided between the two sides of the shaft protrusion and the shaft groove, and the bolt shaft through which it passes is pre-tightened. The shim pair consists of a first shim embedded on the surface of the shaft protrusion and a second shim located on one side of the shaft groove.

2. A damping joint according to claim 1, characterized in that: The gasket assembly is made of plastic, nylon, or ceramic material. The first gasket has several protrusions distributed on its non-friction surface. These protrusions are embedded in the recesses of the convex surface of the swing component shaft to form an anti-rotation positioning. The second gasket is free between the first gasket and the shaft groove.

3. A damping joint according to claim 1 or 2, characterized in that: The joint seat has two groove walls. The shaft hole in one groove wall is larger than the diameter of the bolt head and is equipped with a thickened shim. The thickened shim abuts against the second shim to adjust the tightness.

4. A damping joint according to claim 3, characterized in that: The shaft hole that mates with the bolt head is an inverted conical hole, and the thickened shim that mates with it is an inverted conical plastic part with axial anti-rotation strips evenly distributed on its surface. The axial anti-rotation strips are used to make an interference fit with the shaft hole. A disc-shaped shim is also provided between the thickened shim and the bolt head.

5. A damping joint according to claim 3, characterized in that: The movement clearance between the axial protrusion of the swing component and the axial groove of the joint seat is provided by a protrusion at the bottom of the axial groove and a corresponding arc-shaped stroke groove on the edge of the axial protrusion. The two work together to constrain the swing stroke of the swing component.

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