A compact display arm

Abstract

The utility model relates to a compact display support arm, including upper support arm, lower support arm, suspension seat and support seat, are linked into four connecting rod structures through four hinge shafts, and are maintained by built -in pre -tight spring support angle, wherein: pre -tight spring both ends respectively act on two pairs of angle hinge shaft, and the suspension seat and support seat are processed with the notched groove that can swing pre -tight spring in two hinge shaft positions. The utility model pre -tight spring both ends directly act on the hinge shaft at two pairs of angle, under the basis of maintaining support force, do not set up special suspension point, reduce the space occupied, make the two hinge shaft points on the suspension seat and support seat can be designed closer, reach the limit of the space required by pre -tight spring, thereby realize compact and lightweight design.

Description

Technical Field

[0001] This utility model belongs to the field of monitor bracket technology, and specifically relates to a compact monitor arm. Background Technology

[0002] Monitor stands are common products, and their key component is an adjustable arm that provides support and maintains its position. The main body of the arm is a four-bar linkage, which works in conjunction with an internal elastic component that generates preload. This elastic component provides the supporting force that keeps the arm in its self-positioning position. The spring assembly's main component is a spring, and its preload is adjustable to support monitors of varying weights. This spring assembly has a suspension end and an adjustable screw end; the positions of these ends affect the size of the four-bar linkage. For example:

[0003] CN202221885361.5 discloses an overlapping fulcrum display arm, including an upper arm, a lower arm, a first base, a second base, and a spring assembly. The upper arm, lower arm, first base, and second base are hinged to form a four-bar structure via four fulcrum shafts. A positioning preload is provided by a spring assembly located between the upper and lower arms. The spring assembly includes a spring, a nut seat, and a screw. The nut seat is fixed to one end of the spring, and the screw is screwed onto the nut seat. A shaft groove is provided at the movable positioning end of the upper or lower arm, and a horizontal shaft located at the spring end is movably embedded in the shaft groove and closed by a shaft baffle. One end of the screw can rotatably pass through a fulcrum shaft on the first or second base that is not on the same side as the shaft groove, and abuts against the fulcrum shaft to form a spring preload. The advantage of this patent is that one end passes through the fulcrum shaft, but the other end is located on the upper or lower arm, occupying minimal height space.

[0004] The object of this invention is to find a more reasonable technical solution. Summary of the Invention

[0005] The purpose of this invention is to design a compact display arm in which the two ends of a preloaded spring act on the diagonal hinge shaft of a hinged four-bar linkage.

[0006] The present invention is implemented as follows: a compact display arm, comprising an upper arm, a lower arm, a suspension seat, and a support seat, which are hinged together by four hinge shafts to form a four-bar structure, and the support angle is maintained by a built-in preload spring; characterized in that: the two ends of the preload spring act on two opposite hinge shafts, and the suspension seat and the support seat are machined with slots at the two hinge shaft positions for the preload spring to swing.

[0007] The preload spring has a suspension end and a screw end. The suspension end is suspended on the hinge shaft between the suspension seat and the lower support arm. The screw end passes through the hinge shaft between the support seat and the upper support arm and is hung on the hinge shaft by means of the screw head of the screw end. The support seat also has a window above the hinge shaft that is hinged to the upper support arm, which communicates with the slot. The screw head of the bolt end of the suspension end can be exposed in the window when it swings down, so that the tool can be inserted for adjustment.

[0008] The hinge shaft through which the screw end passes toward the screw head has a contact surface machined at least around the perforation, and a lubricating gasket is provided between the contact surface and the screw head.

[0009] The upper support arm is a large groove-shaped component, and the lower support arm is a small groove-shaped component. The upper support arm can be fitted over the outside of the lower support arm. The lower support arm is equipped with a cable management groove, which is fixed to the bottom surface of the lower support arm by screws or clips.

[0010] A triangular decorative cover is provided on the outside of the hinge joint between the upper arm and the support base, which covers the outside of the hinge shaft end.

[0011] The two ends of the preload spring of this utility model act directly on the hinge pins at two opposite corners. While maintaining the supporting force, no special suspension point is set, which reduces the space occupied. This allows the two hinge pin points on the suspension seat and the support seat to be designed closer together, reaching the limit of the space required for the preload spring, thereby achieving a compact and lightweight design. Attached Figure Description

[0012] The invention will be further described below with reference to specific figures:

[0013] Figure 1 is a schematic diagram of a compact display arm.

[0014] Figure 2 is a schematic cross-sectional view of the compact display arm.

[0015] Figure 3 is an exploded view of the compact display arm.

[0016] in

[0017] 1—Upper support arm; 11—Decorative cover;

[0018] 2—Lower support arm;

[0019] 3—Suspension seat;

[0020] 4—Support base; 41—Slot; 42—Window;

[0021] 5—Hinge; 51—Contacting plane;

[0022] 6—Preload spring; 61—Suspension end; 62—Screw end; 63—Screw head; 64—Washer;

[0023] 7—Cable channel; 71—Screw; Detailed Implementation

[0024] Referring to Figures 1 to 3, the compact monitor arm includes an upper arm 1, a lower arm 2, a suspension mount 3, and a support mount 4. These are hinged together by four hinge shafts 5 to form a four-bar linkage, allowing for tilt angle adjustment. A built-in preload spring 6 maintains the support angle, a design adopted by most existing monitor arms. In this example, the preload spring 6 acts on two opposite hinge shafts 5, and the suspension mount 3 and support mount 4 have slots 41 machined at the two hinge shaft positions to provide space for the preload spring 6 to swing, preventing interference that could cause changes in spring force.

[0025] More specifically, the preload spring 6 has a suspension end 61 and a screw end 62. The suspension end 61 is suspended on the hinge pin 5 between the suspension seat 3 and the lower support arm 2. The screw end 62 passes through the hinge pin 5 between the support seat 4 and the upper support arm 1, and is hung on the hinge pin 5 by means of the screw head 63 of the screw end 62. For this purpose, the support seat 4 also has a window 42 above the hinge pin 5 that is hinged to the upper support arm 1, which communicates with the slot 41. The bolt head of the bolt end of the suspension end 61 can be exposed in the window 42 when it swings downward, allowing tools to be inserted for adjustment. In the use state, it can be hidden in the window 42, and the window can also be partially covered by the upper support arm 1 to maintain the integrity of the support seat and make the appearance simpler.

[0026] The hinge 5 through which the screw end 62 passes has a contact surface 51 machined at least around the perforation on the screw head side. A lubricating pad 64 is provided between the contact surface 51 and the screw head 63 to reduce the friction force when the preload spring 6 is adjusted.

[0027] Furthermore, the upper support arm 1 is a large groove-shaped component and the lower support arm 2 is a small groove-shaped component. The upper support arm 1 can be fitted over the outside of the lower support arm 2 without the need for an additional decorative cover. For this purpose, a triangular decorative cover 11 is provided on the outside of the hinge joint between the upper support arm 1 and the support base 4. The decorative cover 11 covers the outside of the hinge shaft 5, forming a functional decoration.

[0028] Additionally, the lower support arm 2 is equipped with a cable management channel 7, which is fixed to the bottom surface of the lower support arm 2 by screws 71 or clips. This provides a passage for information cables and other cables, resulting in a cleaner working environment.

[0029] The naming of the suspension bracket and support bracket mentioned above is based on the fact that in the use of the four-bar linkage arm, the end used to suspend the monitor is called the suspension bracket, and the end used to position it on the column or fixed object is called the support bracket; the upper one is the upper support arm, and the lower one is the lower support arm.

Claims

1. A compact display arm, comprising an upper arm (1), a lower arm (2), a suspension seat (3), and a support seat (4), hinged together by four hinge pins (5) to form a four-bar linkage, and maintained at the support angle by a built-in preload spring (6); characterized in that: The two ends of the preload spring (6) act on the two opposite hinge pins (5), and the suspension seat (3) and the support seat (4) are machined with slots (41) at the two hinge pins (5) to allow the preload spring (6) to swing.

2. The compact display arm according to claim 1, characterized in that: The preload spring (6) has a suspension end (61) and a screw end (62). The suspension end (61) is suspended on the hinge shaft (5) between the suspension seat (3) and the lower support arm (2). The screw end (62) passes through the hinge shaft (5) between the support seat (4) and the upper support arm (1) and is hung on the hinge shaft (5) by means of the screw head (63) of the screw end (62). The support seat (4) also has a window (42) above the hinge shaft (5) that is hinged to the upper support arm (1) and communicates with the slot (41). The screw head of the bolt end of the suspension end (61) can be exposed in the window (42) when it swings down, so that the tool can be inserted for adjustment.

3. A compact display arm according to claim 1 or 2, characterized in that: The hinge shaft (5) through which the screw end (62) passes toward the screw head has a contact surface (51) machined at least around the perforation, and a lubricating gasket (64) is provided between the contact surface (51) and the screw head (63).

4. A compact display arm according to claim 1 or 2, characterized in that: The upper support arm (1) is a large groove-shaped component and the lower support arm (2) is a small groove-shaped component. The upper support arm (1) can be fitted over the outside of the lower support arm (2). The lower support arm (2) is equipped with a cable management groove (7), which is fixed to the bottom surface of the lower support arm (2) by screws (71) or buckles.

5. A compact display arm according to claim 4, characterized in that: A triangular decorative cover (11) is provided on the outside of the hinge joint of the upper arm (1) with the support base (4), which covers the outside of the end of the hinge shaft (5).

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