阅读说明：本技术 悬臂装置 (Cantilever device ) 是由 洪钦瑞 于 2020-08-03 设计创作，主要内容包括：一种悬臂装置,包含悬臂单元、限位件及挡止件。所述悬臂单元具有套筒,及可转动地穿置在所述套筒的轴杆。所述轴杆具有相隔第一夹角的两个限位面、形成在外周面且界定在所述限位面间的嵌合槽,及形成在外周面且围绕所述嵌合槽而成环形的滑动槽。所述限位件穿置在所述轴杆的嵌合槽与所述套筒间,且抵靠于所述限位面至少其中一个,并具有相隔第二夹角的两个挡止面。所述挡止件通过所述套筒且穿置在所述滑动槽内,用于抵靠任一个挡止面,使所述轴杆相对于所述套筒转动。借此,只需替换具有不同第二夹角的限位件,或截断部分的限位件,就可以限制所述悬臂单元在不同的角度范围内转动,进而以模块化设计,提升使用变化性及实用性。(A cantilever device comprises a cantilever unit, a limiting part and a stopping part. The cantilever unit is provided with a sleeve and a shaft rod which is rotatably arranged in the sleeve in a penetrating way. The shaft lever is provided with two limiting surfaces which are separated by a first included angle, a tabling groove which is formed on the outer circumferential surface and is defined between the limiting surfaces, and an annular sliding groove which is formed on the outer circumferential surface and surrounds the tabling groove. The limiting piece penetrates between the embedding groove of the shaft rod and the sleeve, abuts against at least one of the limiting surfaces, and is provided with two stopping surfaces separated by a second included angle. The stopping piece passes through the sleeve and penetrates through the sliding groove to be used for abutting against any stopping surface, so that the shaft rod rotates relative to the sleeve. Therefore, the rotation of the cantilever unit in different angle ranges can be limited only by replacing the limiting parts with different second included angles or cutting off the limiting parts of the parts, and further the use variability and the practicability are improved through the modularized design.)

1. A cantilever apparatus, comprising:

the cantilever unit extends along the length direction and is provided with a sleeve and a shaft rod which can be rotatably penetrated in the sleeve;

the method is characterized in that:

the shaft lever of the cantilever unit is provided with two limiting surfaces separated by a first included angle, a tabling groove formed on the outer circumferential surface and defined between the limiting surfaces, and an annular sliding groove formed on the outer circumferential surface and surrounding the tabling groove;

the limiting piece is arranged between the embedded groove of the shaft rod and the sleeve in a penetrating manner, abuts against at least one of the limiting surfaces, and is provided with two stopping surfaces separated by a second included angle; and

and the stopping piece passes through the sleeve and penetrates through the sliding groove, and the stopping piece is used for abutting against any stopping surface, so that the shaft rod rotates relative to the sleeve within an angle range not smaller than the second included angle.

2. The boom apparatus of claim 1, wherein: the first included angle is between 180 and 210 degrees.

3. The boom apparatus of claim 1 or 2, wherein: the second included angle is 45-135 degrees.

4. The boom apparatus of claim 1, wherein: the limiting piece comprises a tabling part which is tabled in the tabling groove and fills the corresponding part of the sliding groove.

5. The boom apparatus of claim 4, wherein: the fitting portion of the stopper has the stopper surfaces formed on both end surfaces.

6. The boom apparatus of claim 4, wherein: the limiting part further comprises two extending parts, the extending parts are connected to two opposite ends of the embedding part, and the stopping surfaces are formed on the end surfaces of the extending parts respectively.

7. The boom apparatus of claim 4, wherein: the embedded part of the limiting piece is movably arranged in the embedded groove of the shaft rod in a penetrating way.

8. The boom apparatus of claim 1 or 7, wherein: the limiting piece is provided with two abutting surfaces which are opposite and used for abutting against at least one of the limiting surfaces.

9. The boom apparatus of claim 1, wherein: the sleeve is provided with a screw hole, the sleeve ring is arranged between the sleeve and the limiting part and comprises a through hole corresponding to the screw hole, and the stopping part is screwed in the screw hole of the sleeve and penetrates through the through hole of the sleeve ring to be arranged in the sliding groove of the shaft rod.

10. The boom apparatus of claim 1, wherein: the cantilever unit includes an extension arm having the sleeve formed at one end and a cantilever extending in the length direction and having the shaft formed at one end.

Technical Field

The present invention relates to a suspension arm device, and more particularly, to a suspension arm device suitable for suspending a screen.

Background

Referring to fig. 1, a conventional suspension type monitor supporting arm 1 disclosed in chinese patent No. CN2768153Y mainly includes an extending arm 11 and a cantilever 12 pivotally connected to each other. The extension arm 11 has a sleeve 111 formed at one end, and a stopper 112 formed on an inner circumferential surface of the sleeve 111. The cantilever 12 has a connecting portion 121 sleeved on the sleeve 111, and a stopper 122 formed at an end edge of the connecting portion 121. Therefore, the stoppers 112 and 122 are blocked with each other, so that the swing angle between the cantilever body 12 and the extension arm 11 is limited, and the steering is not to be at a useless angle or the two are overlapped.

However, since the stoppers 112 and 122 for limiting the angle are integrally formed with the sleeve 111 and the connecting portion 121, respectively, and the sleeve 111 and the connecting portion 121 are part of the extension arm 11 and the cantilever 12, respectively, if there is a different angle requirement, the change of the extension arm 11 or the cantilever 12 is required to be replaced, which is not only low, but also no economic benefit.

Disclosure of Invention

The invention aims to provide a cantilever device which can be designed in a modularized way and improves the use variability and practicability.

The cantilever device comprises a cantilever unit, a limiting piece and a stopping piece.

The cantilever unit extends along the length direction and is provided with a sleeve and a shaft rod which is rotatably arranged in the sleeve in a penetrating mode, wherein the shaft rod of the cantilever unit is provided with two limiting surfaces which are separated by a first included angle, an embedding groove which is formed in the outer peripheral surface and is defined between the limiting surfaces, and an annular sliding groove which is formed in the outer peripheral surface and surrounds the embedding groove.

The limiting piece penetrates between the embedding groove of the shaft rod and the sleeve, abuts against at least one of the limiting surfaces, and is provided with two stopping surfaces separated by a second included angle.

The stopping piece passes through the sleeve and penetrates through the sliding groove, and the stopping piece is used for abutting against any stopping surface, so that the shaft rod rotates relative to the sleeve within an angle range not smaller than the second included angle.

In the cantilever device, the first included angle is 180-210 degrees.

In the cantilever device, the second included angle is 45-135 degrees.

In the cantilever device of the present invention, the fitting groove and the corresponding sliding groove have a first depth, the sliding groove has a second depth, and the first depth is greater than the second depth, and the stopper includes a fitting portion that is fitted into the fitting groove and fills up the corresponding sliding groove portion.

In the cantilever device of the present invention, the fitting portion of the stopper has the stopper surfaces formed on both end surfaces.

In the cantilever device of the present invention, the position-limiting member further includes two extending portions, the extending portions are connected to opposite ends of the engaging portion, and the stop surfaces are respectively formed on end surfaces of the extending portions.

In the cantilever device of the present invention, the position-limiting member has two abutting surfaces which are opposite and used for abutting against at least one of the position-limiting surfaces.

In the cantilever device of the present invention, the fitting portion of the stopper is movably inserted into the fitting groove of the shaft.

The cantilever device further comprises a sleeve ring, wherein the sleeve is provided with a screw hole, the sleeve ring is arranged between the sleeve and the limiting piece and comprises a through hole corresponding to the screw hole, the stopping piece is screwed in the screw hole of the sleeve, and the stopping piece penetrates through the sliding groove of the shaft rod through the through hole of the sleeve ring.

In the cantilever apparatus of the present invention, the cantilever unit includes an extension arm having the sleeve formed at one end, and a cantilever extending in the length direction and having the shaft formed at one end.

The invention has the beneficial effects that: the rotation of the cantilever unit in different angle ranges can be limited only by replacing the limiting parts with different second included angles or cutting off the limiting parts of the parts, and further the use variability and the practicability are improved through the modular design.

Drawings

Other features and effects of the present invention will be apparent from the embodiments with reference to the accompanying drawings, in which:

FIG. 1 is a partial cross-sectional view illustrating a conventional suspension type monitor supporting arm disclosed in Chinese patent publication No. CN 2768153Y;

FIG. 2 is an exploded perspective view illustrating a first embodiment of the cantilever assembly of the present invention;

FIG. 3 is a perspective view of the first embodiment;

FIG. 4 is a cross-sectional view of the first embodiment;

FIG. 5 is a schematic cross-sectional view taken along line V-V in FIG. 4 illustrating rotation of a cantilever of the first embodiment relative to an extension arm through an angular range of 45 degrees;

FIG. 6 is a cross-sectional schematic view similar to FIG. 5, but with the cantilever rotated relative to the extension arm over an angular range of 60 degrees;

FIG. 7 is a cross-sectional schematic view similar to FIG. 5, but with the cantilever rotated relative to the extension arm through an angular range of 90 degrees;

FIG. 8 is a schematic cross-sectional view illustrating a second embodiment of the cantilever apparatus of the present invention;

FIG. 9 is a schematic cross-sectional view illustrating rotation of a cantilever in the second embodiment through an angle of 180 degrees relative to an extension arm;

FIG. 10 is a schematic cross-sectional view similar to FIG. 9, but with the cantilever rotated relative to the extension arm through an angular range of 270 degrees;

FIG. 11 is a cross-sectional schematic view similar to FIG. 9, but with the cantilever arm rotated relative to the extension arm over an angular range of 330 degrees; and

fig. 12 is a schematic cross-sectional view illustrating rotation of the cantilever arm relative to the extension arm through an angular range of 360 degrees.

Detailed Description

Before the present invention is described in detail, it should be noted that in the following description, like elements are represented by like reference numerals.

Referring to fig. 2 and 3, the cantilever apparatus according to the first embodiment of the present invention includes a cantilever unit 2, a limiting member 3, a collar 4 and a stopping member 5.

Referring to fig. 2, 4 and 5, the cantilever unit 2 includes an extension arm 21 and a cantilever 22 extending along a length direction. The extension arm 21 has a sleeve 211 formed at one end. The sleeve 211 has a threaded hole 212. The cantilever 22 has a shaft 221 formed at one end and rotatably inserted through the sleeve 211. The shaft 221 has two stopper surfaces 222 separated by a first included angle θ 1, a fitting groove 223 formed in an outer circumferential surface and defined between the stopper surfaces 222, and a sliding groove 224 formed in the outer circumferential surface and formed in a ring shape around the fitting groove 223. The first included angle θ 1 is 180 degrees to 210 degrees, and in this embodiment, 210 degrees. Referring to fig. 12, the portions of the fitting groove 223 and the corresponding sliding groove 224 have a first depth D1, the sliding groove 224 has a second depth D2, and the first depth D1 is greater than the second depth D2.

The limiting member 3 is inserted between the engaging groove 223 of the shaft 21 and the sleeve 211, and includes an engaging portion 31 and two extending portions 32.

The fitting portion 31 has a thickness corresponding to the first depth D1, is fitted into the fitting groove 223 to fill the corresponding sliding groove 224, and has two abutting surfaces 311 formed on both end surfaces and abutting against the stopper surface 222. The extending portions 32 are connected to opposite ends of the engaging portion 31, and each extending portion 32 has a stop surface 321 formed on an end surface. The stop surfaces 321 are separated by a second included angle θ 2. In this embodiment, the second included angle θ 2 is 45 degrees.

The collar 4 is disposed between the sleeve 211 and the limiting member 3, and includes a through hole 41 corresponding to the screw hole 212.

The stopper 5 is screwed into the screw hole 212 of the sleeve 211 and is inserted into the sliding groove 224 of the shaft 221 through the through hole 41 of the collar 4.

When the cantilever 22 rotates relative to the sleeve 211 of the extension arm 21, the limiting member 3 is pushed by the limiting surface 222 of the shaft 221 to rotate synchronously until the stop surface 321 of any one of the extension portions 32 abuts against the stop member 5 and is stopped by the stop member 5, so that the cantilever 22 is limited to rotate within an angle range of 45 degrees by the stop surfaces 321 spaced at 45 degrees.

It should be noted that the cantilever unit 2 is not limited to the rotation of the cantilever 22 relative to the sleeve 211 of the extension arm 21, but may also be the rotation of the sleeve 211 of the extension arm 21 relative to the shaft 221 of the cantilever 22 when the extension arm 21 is not fixed, so that when the sleeve 211 of the extension arm 21 drives the stop member 5 to rotate relative to the cantilever 22, the stop member is also stopped by the stop surface 321, and can only rotate within an angle of 45 degrees.

The cantilever 22 or the extension arm 21 is not limited to be rotatable only within an angle of 45 degrees, and may be rotatable within an angle of 60 degrees as shown in fig. 6, or rotatable within an angle of 90 degrees as shown in fig. 7. It should be noted that the change of the second included angle θ 2 can be achieved by replacing different limiting members 3, or by cutting off at least one of the extending portions 32 of the limiting members 3, so that a new stopping surface 321 is formed on the cut-off surface of the cut-off extending portion 32, thereby changing the included angle range between the stopping surfaces 321.

Referring to fig. 8 and 9, a second embodiment of the present invention is substantially the same as the first embodiment, and also includes the cantilever unit 2, the limiting member 3, the collar 4 and the stopping member 5. The difference lies in:

the stopper 3 includes only the fitting portion 31. The fitting portion 31 has two stopper surfaces 312 formed on two end surfaces and located on the same end surface as the abutting surface 311.

When the cantilever 22 rotates counterclockwise or clockwise relative to the sleeve 211 of the extension arm 21, until one of the limiting surfaces 222 of the shaft 221 abuts against the abutting surface 311 corresponding to the engaging portion 31 of the limiting member 3, the limiting member 3 is pushed to rotate synchronously until one of the stopping surfaces 312 of the engaging portion 31 abuts against the stopping member 5 and is stopped by the stopping member 5, thereby limiting the cantilever 22 to rotate only within an angle range of 180 degrees.

Similarly, when the sleeve 211 of the extension arm 21 drives the stopper 5 to rotate relative to the suspension arm 22, in the process of rotating along the sliding groove 224, one of the stopper surfaces 312 of the limiting member 3 is pushed, so that the engaging portion 31 slides in the engaging groove 223 of the shaft 221, until the abutting surface 311 of the engaging portion 31 of the limiting member 3 abuts against the corresponding limiting surface 222, so as to limit the extension arm 21 to rotate only within an angle range of 180 degrees.

It should be noted that the cantilever 22 or the extension arm 21 is not limited to rotate only within an angle range of 180 degrees, and may rotate within an angle range of 270 degrees as shown in fig. 10, or rotate within an angle range of 330 degrees as shown in fig. 11, since the stopper 3 can be pushed, the rotatable angle is equal to a second angle θ 2+ (the first angle θ 1- (360-second angle θ 2)), and the aforementioned (first angle θ 1- (360-second angle θ 2)) is a rotation angle at which one of the stopper surfaces 222 of the shaft 221 is displaced to abut against the stopper 3, and the rotatable angle is equal to 250+ (190- (360-250)) (330 degrees) taking the second angle θ 2 and the first angle θ 1 as an example. It should be noted that the change of the angle can be achieved by replacing different position-limiting members 3.

Referring to fig. 12, it should be noted that if the limiting member 3 (see fig. 11) is taken out, the stopping member 5 can rotate freely in 360 degrees around the sliding groove 224 of the shaft 221 without being blocked by the limiting member 3 (see fig. 11). Accordingly, the cantilever 22 or the extension arm 21 is not limited to be rotatable only in a specific angular range, and can be rotated arbitrarily in an angular range of 360 degrees.

From the above description, the advantages of the foregoing embodiments can be summarized as follows:

according to the invention, the rotation of the cantilever unit 2 in different angle ranges can be limited only by replacing the limiting part 3 with different second included angles theta 2 or the limiting part 3 of the truncated part, so that the use variability and the practicability are improved by virtue of the modular design.

The above description is only an example of the present invention, and the scope of the present invention should not be limited thereby, and the invention is still within the scope of the present invention by simple equivalent changes and modifications made according to the claims and the contents of the specification.