A pitch angle adjustment assembly

Abstract

The utility model relates to a kind of pitch angle adjusting assembly, including first seat body, second seat body and pivot;Second seat body is in the shape of U structure, can first seat body be clamped in it, and form the integral body that can be relatively rotated by pivot positioning;Wherein: first seat body inner chamber is equipped with first taper portion by one-way bearing, second seat body one side is equipped with second taper portion, the first taper portion and second taper portion are mutually matched to produce rotary damping force, and the size of damping force can be adjusted by the pivot passing through both thereof. The utility model adopts large-diameter one-way bearing, directly designs between the shaft sleeve of first seat body and first taper portion, and the bearing effect is better, and first taper portion and second taper portion that cooperate with each other are set between the cooperation surface of first seat body and second seat body, especially the contact surface of two is matched using multistage step taper surface, improves local pressure, to increase the static friction of whole, reaches the reasonable bearing requirement.

Description

Technical Field

[0001] This utility model belongs to the field of monitor bracket technology, and specifically relates to a tilt angle adjustment component, which is particularly suitable for use as a hanging monitor to realize the functions of load-bearing, adjustment and self-positioning. Background Technology

[0002] In monitor stands, tilt angle adjustment relies on damping force for load-bearing and self-positioning. This damping force is static friction, achieved through friction pads or conical friction sleeves placed between moving parts. For example:

[0003] CN202020101107.9 discloses a horizontal damping shaft device, including a first base, a second base, and a horizontal shaft. The second base has a U-shaped structure, which can clamp the first base within it and form a rotatable whole through positioning by the horizontal shaft. The first base has a conical cavity, and a conical core with a shaft hole is nested within the conical cavity. The surface of the conical core contacts the surface of the conical cavity and generates rotational damping. The horizontal shaft passes through the shaft hole of the conical core, and a one-way bearing is embedded between the horizontal shaft and the shaft hole. This one-way bearing always prevents the load-bearing side of the first and second bases from falling downwards. This technology uses a one-way bearing to provide unidirectional load-bearing, resulting in a better experience in adjusting the elevation angle. Furthermore, the cooperation between the conical cavity and the conical core greatly increases the friction area, providing better load-bearing capacity. However, the one-way bearing's position design is unreasonable.

[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 pitch angle adjustment component that uses a large-diameter one-way bearing as the one-way load-bearing component; the secondary purpose is to design a scheme to increase local pressure through the contact of a small conical surface.

[0006] The present invention is implemented as follows: a pitch angle adjustment component includes a first base, a second base, and a rotating shaft; the second base has a U-shaped structure, which can hold the first base within it, and is positioned by the rotating shaft to form a whole that can rotate relative to each other; the first base has a first cone portion installed in its inner cavity through a one-way bearing, and a second cone portion is installed on one side of the second base; the first cone portion and the second cone portion cooperate with each other to generate rotational damping force, and the magnitude of the damping force can be adjusted by means of the rotating shaft passing through them.

[0007] The first cone also includes a bushing, and the two are nested and linked together. The bushing is embedded in the inner ring of the one-way bearing. The second cone and the contact surface of the second seat are provided with mutually cooperating anti-rotation protrusions and grooves. The rotating shaft passes through the C-shaped structure of the second seat, as well as the first cone, the second cone and the bushing within the C-shaped structure, and the tightness is adjusted by the set bolt at the end of the rotating shaft.

[0008] The second seat has a second cone and a first cone on each side of the C-shaped structure, with the two first cones standing at both ends of the bushing.

[0009] One of the first cone and the second cone is a convex cone, and the other is a concave cone. The two are nested together to form abutments.

[0010] The first cone is a convex cone, and the second cone is a concave cone. The contact surfaces of the convex and concave cones are machined into multi-stage stepped cone surfaces that fit together.

[0011] The stepped cone surface of the convex cone is provided with several axial grooves.

[0012] The outer periphery of the convex cone also has an inward conical surface, and the outer periphery of the concave cone also has an outward conical surface. The convex cone and the concave cone are properly fitted together, and the inward conical surface and the outward conical surface also come into contact.

[0013] A disc spring is provided in the gap between the tops of the convex cone and the concave cone.

[0014] The first housing has a retaining ring at one end of its internal cavity to block the one-way bearing.

[0015] This utility model uses a large-diameter one-way bearing, which is directly designed between the bushing of the first seat body and the first cone, resulting in better load-bearing performance. Furthermore, a first cone and a second cone are provided between the mating surfaces of the first seat body and the second seat body to cooperate with each other. In particular, the contact surfaces of the two adopt a multi-stage stepped cone surface to increase local pressure, thereby increasing the overall static friction force and achieving reasonable load-bearing requirements. Attached Figure Description

[0016] The invention will be further described below with reference to specific figures:

[0017] Figure 1 is a schematic diagram of the pitch angle adjustment component.

[0018] Figure 2 is a schematic cross-sectional view of the pitch angle adjustment component.

[0019] Figure 3 is a schematic diagram of two cross-sections of the pitch angle adjustment component.

[0020] Figure 4 is an exploded view of the pitch angle adjustment component.

[0021] in

[0022] 1—First seat; 11—Retaining ring; 12—Connecting hole; 13—Slot; 14—Decorative cover;

[0023] 2—Second seat; 21—Slot; 22—Suspension plate;

[0024] 3—Shaft; 31—Set bolt; 32—Set nut;

[0025] 4—One-way bearing;

[0026] 5—First cone portion; 51—Protruding cone; 52—Inward cone surface; 53—Stepped cone surface; 531—Axial groove; 54—Bus sleeve;

[0027] 6—Second cone portion; 61—Concave cone; 62—Outward-facing cone surface; 63—Corrugated protrusion;

[0028] 7—Disc spring; Detailed Implementation

[0029] Referring to Figures 1 to 4, the pitch angle adjustment assembly includes a first base 1, a second base 2, and a rotating shaft 3. The second base 2 has a U-shaped structure, which can hold the first base 1 in it and is positioned by the rotating shaft 3 to form a whole that can rotate relative to each other. The first base 1 has a first cone 5 installed in its inner cavity through a one-way bearing 4, and a second cone 6 is installed on one side of the second base 2. The first cone 5 and the second cone 6 cooperate with each other to generate rotational damping force, and the magnitude of the damping force can be adjusted by means of the rotating shaft 3 passing through them. More specifically, the first cone 5 also includes a bushing 54, the two nesting and moving together, with the bushing 54 embedded in the inner ring of the one-way bearing 4; the second cone 6 and the second seat 2 have mutually cooperating anti-rotation protrusions 63 and grooves 21 between their contact surfaces; the rotating shaft 3 passes through the C-shaped structure of the second seat 2, as well as the first cone 5, the second cone 6, and the bushing 54 within the C-shaped structure, and its tightness is adjusted by a set bolt 31 at the end of the rotating shaft 3. The rotating shaft 3 has two structures: one is a bolt shaft as shown in Figure 2, with a set nut 32 at the end; the other is as shown in Figure 3, with a set bolt 31 at the end of the rotating shaft 3. Both can achieve adjustment of the axial tightness of the rotating shaft 3.

[0030] In addition, the first housing 1 has a centrally located inner cavity for assembling the one-way bearing and large-diameter openings at both ends. The large-diameter openings accommodate the first cone 5 and the second cone 6. The first housing 1 can be machined from an alloy casting, and a groove 13 for the swinging of the C-shaped structure of the second housing 2 is also machined at the large-diameter opening. A decorative cover 14 is also provided at the large-diameter opening. At one end of the inner cavity of the first housing 1, a retaining ring 11 is also provided to block the one-way bearing, as shown in Figure 3, which can serve as a reference for proper assembly.

[0031] In the illustration, the first base 1 is designed with a connection hole 12 for connecting to the bracket cantilever, and the second base 2 is used to position the monitor hanging plate 22. The two can also be interchanged according to design requirements.

[0032] In order to increase friction, a second cone 6 is provided on each side of the C-shaped structure of the second seat 2, and a first cone (5) is provided accordingly. The two first cones (5) are located at both ends of the bushing (54), that is, the design is symmetrical with the center plane of the bushing 54. When adjusting, the damping forces on both sides of the second seat 2 are relatively balanced.

[0033] One of the first cone portion 5 and the second cone portion 6 is a convex cone 51, and the other is a concave cone 61, which are nested together to form an abutment. As shown in Figure 3, the outer periphery of the convex cone 51 also has an inward-facing conical surface 52, and the outer periphery of the concave cone 61 also has an outward-facing conical surface 62. When the convex cone 51 and the concave cone 61 are properly engaged, the inward-facing conical surface 52 and the outward-facing conical surface 62 also form an abutment. This design, in addition to increasing the friction area, also reduces the impact of material deformation when the rotating shaft 3 is tightened.

[0034] Furthermore, the first cone 5 is a convex cone 51, and the second cone 6 is a concave cone 61. The contact surfaces of the convex cone 51 and the concave cone 61 are machined into multi-stage stepped cone surfaces 53 that fit together. Several axial grooves 531 are provided on the stepped cone surface 53 of the convex cone and are evenly distributed. The axial grooves 531 are used for ventilation to solve the problem of large vacuum adsorption generated on the two mating surfaces and the negative pressure that appears inside the tight fit between the convex cone 51 and the concave cone 61, thereby reducing the external force required to convert static friction into dynamic friction.

[0035] Referring to Figures 2 and 4, a disc spring 7 is provided in the gap between the tops of the convex cone 51 and the concave cone 61. With the help of the disc spring 7, the tightness of the set bolt 31 on the rotating shaft can be fed back in real time. Especially when adjusting from tight to loose, it can react in time and reduce the static friction accordingly.

Claims

1. A pitch angle adjustment assembly, comprising a first base (1), a second base (2), and a rotating shaft (3); the second base (2) has a U-shaped structure, capable of holding the first base (1) therein. And it is positioned by a rotating shaft (3) to form a whole that can rotate relative to each other; characterized in that: the inner cavity of the first seat (1) is equipped with a first cone (5) through a one-way bearing (4), and a second cone (6) is installed on one side of the second seat (2). The first cone (5) and the second cone (6) cooperate with each other to generate rotational damping force, and the magnitude of the damping force can be adjusted by means of the rotating shaft (3) passing through the two.

2. The pitch angle adjustment component according to claim 1, characterized in that: The first cone (5) also includes a bushing (54), the two are nested together and linked together, and the bushing (54) is embedded in the inner ring of the one-way bearing (4); the second cone (6) and the second seat (2) are provided with a locking protrusion (63) and a locking groove (21) that cooperate to prevent rotation between their contact surfaces; the rotating shaft (3) passes through the C-shaped structure of the second seat (2), as well as the first cone (5), the second cone (6) and the bushing (54) in the C-shaped structure, and the tightness is adjusted by the set bolt (31) at the end of the rotating shaft (3).

3. The pitch angle adjustment component according to claim 2, characterized in that: The second seat (2) has a second cone (6) and a first cone (5) on each side of the shaped structure. The two first cones (5) are located at both ends of the bushing (54).

4. A pitch angle adjustment assembly according to claim 1, 2 or 3, characterized in that: One of the first cone (5) and the second cone (6) is a convex cone (51) and the other is a concave cone (61), and the two are nested together to form a collision.

5. A pitch angle adjustment component according to claim 4, characterized in that: The first cone (5) is a convex cone (51), and the second cone (6) is a concave cone (61). The contact surfaces of the convex cone (51) and the concave cone (61) are processed into multi-level stepped cone surfaces (53) that cooperate with each other.

6. The pitch angle adjustment component according to claim 5, characterized in that: Several axial grooves (531) are provided on the stepped cone surface (53) of the convex cone.

7. A pitch angle adjustment component according to claim 5, characterized in that: The outer periphery of the convex cone (51) also has an inward conical surface (52), and the outer periphery of the concave cone (61) also has an outward conical surface (62). The convex cone (51) and the concave cone (61) are properly fitted together, and the inward conical surface (52) and the outward conical surface (62) also come into contact.

8. A pitch angle adjustment component according to claim 4, characterized in that: A disc spring (7) is provided in the gap between the cone tops of the convex cone (51) and the concave cone (61).

9. A pitch angle adjustment component according to claim 1, characterized in that: The first seat (1) has a retaining ring (11) at one end of its inner cavity to block the one-way bearing.

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