A display mount adjustment arm

Abstract

The utility model relates to a kind of display support adjusting arm, including upper cantilever, lower cantilever, support seat, suspension seat and pre-tight spring;Upper cantilever and lower cantilever two ends are hinged on support seat and suspension seat by hinged axle, constitute parallel four-bar linkage mechanism, and by pre-tight spring provide pre-tight force;Wherein: one end of pre-tight spring is hung on lower cantilever and / or suspension seat, other end is hung on driving shaft, the driving shaft sliding is arranged in the guide slot of a fixed part, and by rotating positioning the adjusting bolt on fixed part drive along guide slot up and down, change the angle of pre-tight spring;The fixed part is hinged on upper cantilever and lower cantilever by hinged axle, and fixed part can follow movement.The utility model has unique concept, by the adjustment of the included angle of pre-tight spring and upper, lower cantilever, can easily adjust load range, while adjusting included angle, also can change pre-tight spring length synchronously, superimposed load adjustment range, hit two birds with one stone.

Description

Technical Field

[0001] This utility model belongs to the field of monitor bracket technology, and specifically relates to a monitor bracket adjustment arm, which can simplify the tension spring structure. Background Technology

[0002] Existing cantilever brackets are mainly used for supporting and adjusting display devices, satisfying height, distance, and tilt adjustments. Crucially, they can be suspended in any position, providing users with convenient adjustment. The key component of the bracket, the adjusting arm, is structurally a combination of a four-bar linkage and a preload spring. The preload spring maintains the self-positioning during suspension, and its force determines the load-bearing capacity of the adjusting arm. Therefore, when replacing display devices of different specifications, the spring force of the preload spring needs to be adjusted to a suitable range, which is currently the mainstream adjustment method. However, this also increases the risk of overstretching the preload spring.

[0003] The object of this invention is to find a more reasonable adjustment scheme. Summary of the Invention

[0004] The purpose of this invention is to design a monitor bracket adjustment arm that adjusts the load-bearing range by changing the angle of the preload spring.

[0005] The present invention is implemented as follows: a monitor bracket adjustment arm includes an upper cantilever, a lower cantilever, a support base, a suspension base, and a preload spring; the upper and lower cantilever arms are respectively hinged to the support base and the suspension base via hinge pins, forming a parallel four-bar linkage, and the preload spring provides the preload force; the feature is that one end of the preload spring is suspended on the lower cantilever and / or the suspension base, and the other end is suspended on a drive shaft, which slides through a guide groove of a fixed member and is driven to move up and down along the guide groove by an adjusting bolt rotatably positioned on the fixed member, thereby changing the angle of the preload spring; the fixed member is hinged to the upper and lower cantilever arms via hinge pins, and the fixed member can follow the movement.

[0006] The fastener is an open U-shaped structure, including symmetrical U-shaped side surfaces, an associated surface, and a U-shaped top surface. The top surface has a positioning hole for the adjustment bolt to rotate and position. The two U-shaped side surfaces have guide grooves along the axis of the positioning hole and are hinged to the upper and lower cantilever arms by means of the two U-shaped side surfaces.

[0007] The hinge position of the fixing member with the upper and lower cantilever is close to the connecting surface, the guide groove faces the suspension seat, and the upper end of the guide groove is inclined to the support seat. The preload spring is adjusted from bottom to top with the drive shaft, the angle between the preload spring and the horizontal plane increases and the length becomes longer.

[0008] When the adjusting arm is in a horizontal position, the angle between the guide groove from bottom to top and the adjusting arm from the support seat to the suspension seat is between 90 degrees and 120 degrees.

[0009] The preload spring is suspended at one end on the lower cantilever and the suspension seat, meaning it is suspended on the hinge shaft where the two are hinged.

[0010] A wear-resistant washer is provided between the positioning hole surface and the bolt head of the adjusting bolt on the fastener, and the wear-resistant washer is locked to the top surface of the fastener by screws.

[0011] This utility model features a unique design, reasonable structure, large load-bearing range, and convenient adjustment. By adjusting the angle between the preload spring and the upper and lower cantilever arms, the load-bearing range can be easily adjusted to meet the needs of different monitor specifications. In addition, while adjusting the angle, the length of the preload spring can also be changed simultaneously, thus increasing the load-bearing adjustment range and achieving two benefits at once. Attached Figure Description

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

[0013] Figure 1 Schematic diagram of monitor stand adjustment arm

[0014] Figure 2 Schematic diagram of the cross-section of the monitor stand adjustment arm

[0015] Figure 3 Schematic diagram of the fastener

[0016] Figure 4 Exploded view of the monitor stand adjustment arm

[0017] Figure 5 Internal schematic diagram of the preload spring adjustment

[0018] Figure 6 Schematic diagram of the preload spring adjustment angle

[0019] in

[0020] 1—Upper cantilever; 2—Lower cantilever; 3—Support seat; 4—Suspension seat; 5—Hinge; 6—Preload spring;

[0021] 7—Fixed component; 71—Side side of the mortise; 711—Guide groove; 72—Connecting surface; 73—Top surface of the mortise; 731—Positioning hole;

[0022] 8—Adjusting bolt; 81—Drive shaft; 9—Wear-resistant shim; 91—Screw; Detailed Implementation

[0023] Reference Figures 1 to 6The monitor bracket adjustment arm includes an upper cantilever 1, a lower cantilever 2, a support base 3, a suspension base 4, and a preload spring 6. The upper cantilever 1 and lower cantilever 2 are hinged at both ends to the support base 3 and suspension base 4 via hinge pins 5, forming a parallel four-bar linkage. The preload spring 6 provides the preload force, which is a common basic structural design. In this invention, one end of the preload spring 6 is suspended on the drive shaft 81, and the other end is suspended on the lower cantilever 2 and / or suspension base 4. Specifically, the preload spring 6 is suspended on the hinge pin 5 where the two are hinged, resulting in the most compact structure.

[0024] The preload spring 6, driven by the drive shaft 81, can change the angle between itself and the upper cantilever 1 and the lower cantilever 2, and the change in angle also indicates a change in the supporting force. Specifically, the drive shaft 81 slides through the guide groove 711 of a fixed member 7, and is driven by the adjusting bolt 8, which is rotatably positioned on the fixed member 7, to move up and down along the guide groove 711, changing the angle of the preload spring 6. The fixed member 7 is hinged to the upper cantilever 1 and the lower cantilever 2 via a hinge pin 5, and the fixed member 7 can follow the movement. That is, the fixed member 7 divides the structure into two synchronous parallel four-bar linkages.

[0025] As a preferred embodiment, the fastener 7 is an open C-shaped structure, including symmetrical C-shaped side surfaces 71, an associated surface 72, and a C-shaped top surface 73. A positioning hole 731 for rotating and positioning the adjusting bolt 8 is provided on the top surface 73. Guide grooves 711 are provided on both C-shaped side surfaces 71 along the axial direction of the positioning hole 731, and the fastener is hinged to the upper cantilever 1 and the lower cantilever 2 via the two C-shaped side surfaces 71, thus providing hinge holes with the upper and lower cantilever arms. The C-shaped structure of the fastener 7 provides balanced support for the drive shaft 81, and the gap between the two C-shaped side surfaces 71 provides space for assembling the adjusting bolt 8 and the preload spring 6.

[0026] The fixing member 7 is positioned on both sides 71. The hinge position of the fixing member 7 with the upper cantilever 1 and the lower cantilever 2 is close to the connecting surface 72, and the guide groove 711 faces the suspension seat 4. This arrangement does not affect the swing adjustment and angle adjustment stroke. The upper end of the guide groove 711 is inclined towards the support seat 3. The preload spring 6 is adjusted from bottom to top with the drive shaft 81. The angle between the preload spring 6 and the horizontal plane increases and the length increases. This can also be understood as the angle with the upper and lower cantilever arms increasing, which improves the support force of the adjusting arm. The spring force of the preload spring 6, which increases in sync, also increases in sync. This has a superimposed effect on the adjustment of the support force, which changes the shortcomings of the traditional method of relying solely on the preload force of the preload spring, making the adjustment operation more convenient.

[0027] With the adjusting arm in a horizontal position, the angle between the guide groove 711 from bottom to top and the adjusting arm in the direction from the support seat 3 to the suspension seat 4 is between 90 degrees and 120 degrees. This ensures that during adjustment, the increase in the angle is synchronized with the lengthening of the preload spring, and vice versa.

[0028] A wear-resistant washer 9 is provided between the surface of the positioning hole 731 and the bolt head of the adjusting bolt 8 on the fixing member 7. The wear-resistant washer 9 is locked to the top surface 73 of the fixing member by a screw 91. The wear-resistant washer 9 protects the fixing member 7 and reduces the adjustment resistance.

[0029] In the above example, the preload spring 6 can be a tension spring to simplify the structure and suit a smaller adjustment range; or an adjustable preload spring can be used to make the adjustment range of the adjustment arm larger. Figure 5 This is a schematic diagram of the preload spring adjustment after removing the upper cantilever. The preload spring 6 is in the state at both ends of its stroke. Figure 6 The dashed lines represent frontal views of the preload spring at both ends of its travel. The diagram also shows that, depending on design requirements, the fixing element 7 can protrude beyond the upper cantilever 1 to increase the travel of the adjusting bolt 8. Alternatively, a short preload spring can be used in conjunction with a long adjusting arm. In this case, the preload spring 6 adjusts the suspension position, such as suspending it in the middle of the lower cantilever.

Claims

1. A monitor bracket adjustment arm, comprising an upper cantilever (1), a lower cantilever (2), a support base (3), a suspension base (4), and a preload spring (6); the upper cantilever (1) and the lower cantilever (2) are respectively hinged to the support base (3) and the suspension base (4) via hinge pins (5), forming a parallel four-bar linkage, and the preload spring (6) provides the preload force; characterized in that: One end of the preload spring (6) is suspended on the lower cantilever (2) and / or the suspension seat (4), and the other end is suspended on the drive shaft (81). The drive shaft (81) slides through the guide groove (711) of a fixing member (7) and is driven to move up and down along the guide groove (711) by the adjusting bolt (8) that is rotatably positioned on the fixing member (7), thereby changing the angle of the preload spring (6). The fixing member (7) is hinged to the upper cantilever (1) and the lower cantilever (2) through the hinge shaft (5), and the fixing member (7) can follow the movement.

2. The monitor stand adjustment arm according to claim 1, characterized in that: The fastener (7) is an open U-shaped structure, including symmetrical U-shaped side surfaces (71), an associated surface (72), and a U-shaped top surface (73). The U-shaped top surface (73) has a positioning hole (731) for the adjusting bolt (8) to rotate and position. The two U-shaped side surfaces (71) have guide grooves (711) along the axial direction of the positioning hole (731), and are hinged to the upper cantilever (1) and the lower cantilever (2) by means of the two U-shaped side surfaces (71).

3. The monitor stand adjustment arm according to claim 2, characterized in that: The hinge position of the fixing part (7) with the upper cantilever (1) and the lower cantilever (2) is close to the side of the associated surface (72), the guide groove (711) faces the side of the suspension seat (4), and the upper end of the guide groove (711) is inclined towards the side of the support seat (3). The preload spring (6) is adjusted from bottom to top with the drive shaft (81), the angle between the preload spring (6) and the horizontal plane increases and the length becomes longer.

4. The monitor stand adjustment arm according to claim 3, characterized in that: When the adjusting arm is in a horizontal position, the angle between the guide groove (711) from bottom to top and the adjusting arm from the support seat (3) to the suspension seat (4) is between 90 degrees and 120 degrees.

5. A monitor stand adjustment arm according to claim 1 or 3, characterized in that: The preload spring (6) is suspended on the lower cantilever (2) and the suspension seat (4) at one end, which means it is suspended on the hinge shaft (5) where the two are hinged.

6. A monitor stand adjustment arm according to claim 2 or 3, characterized in that: A wear-resistant washer (9) is provided between the surface of the positioning hole (731) and the bolt head of the adjusting bolt (8) of the fastener (7). The wear-resistant washer (9) is locked to the top surface (73) of the fastener by a screw (91).

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