CN219734884U - Double-section adjusting arm - Google Patents
Double-section adjusting arm Download PDFInfo
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- CN219734884U CN219734884U CN202321065293.2U CN202321065293U CN219734884U CN 219734884 U CN219734884 U CN 219734884U CN 202321065293 U CN202321065293 U CN 202321065293U CN 219734884 U CN219734884 U CN 219734884U
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- arm
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- seat
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- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 239000000725 suspension Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The utility model relates to a double-section adjusting arm, which comprises an upper section arm and a lower section arm which are connected with each other; the upper section arm is hinged into a four-bar structure through four fulcrum shafts by an upper cantilever, a lower cantilever, a supporting seat and a hanging seat; wherein: the upper end of the lower section arm is connected with a supporting seat, and the supporting seat is provided with a through hole leading to the lower section arm; the lower joint arm is provided with a cavity, a spring component is arranged in the cavity, one end of the spring component acts on the cavity, the other end of the spring component penetrates through the through hole of the supporting seat and acts on the upper cantilever or the lower cantilever outside the fulcrum shaft, and therefore a moment for supporting the upper joint arm to hover is generated. The utility model has the characteristics of ingenious conception, reasonable design, light structure and wide adjustment range; and in particular, the spring assembly is arranged in the cavity of the lower arm, so that the weight of the upper arm is reduced, the volume is also reduced, the weight is directly transferred onto a fixed object by using the lower arm, the defect that the head of the traditional adjusting arm is light in weight and the foot is overcome, and the hovering radius of the double arm is larger.
Description
Technical field:
the utility model belongs to the technical field of adjustable brackets, and particularly relates to a double-section adjusting arm which is particularly suitable for supporting a display and realizing a high-low position adjusting and self-positioning scheme.
The background technology is as follows:
the display stand with adjustable height is one common product and has one support arm capable of being set in the holding state. The support arms are all provided with a main body consisting of four connecting rods, and an elastic component is arranged in the main body, and the elastic component is used for generating self-positioning capability and providing supporting force. The main components of the spring assembly are gas springs and column springs, and most of the latter are tension springs. The spring assembly adopting the column spring also has a pretightening force adjusting function, and one end of the spring is provided with a screw rod positioned through a nut seat and adjusted through the screw rod. For this purpose, the end of the screw can be adjusted by means of an externally inserted tool, such as:
CN201921519334.4, a display stand adjusting arm is disclosed, comprising a supporting seat, a hanging seat, an upper cantilever, a lower cantilever and a pre-tightening spring; the two ends of the upper cantilever and the lower cantilever are respectively hinged on the supporting seat and the hanging seat to form a parallel four-bar mechanism, and the pretightening force is provided by a pretightening spring; wherein: one end of the pre-tightening spring is connected to the suspension seat and positioned between the two hinge points, the end part of the other end with the adjusting bolt is hinged in the upper cantilever, the end part of the upper cantilever corresponds to the axial direction of the pre-tightening spring, the formed operation hole is positioned above the hinge point of the upper cantilever and the support seat, and the requirement of inserting and adjusting an external tool is provided. The spring assembly is arranged between the upper cantilever and the lower cantilever, so that the adjusting arm is large in size and weight is increased.
How to provide a lightweight double-jointed arm scheme is the object of the research of the utility model.
The utility model comprises the following steps:
the utility model aims to design a double-section adjusting arm with a spring assembly arranged in a lower-section arm.
The technical scheme of the utility model is realized as follows: a double-section adjusting arm comprises an upper section arm and a lower section arm which are connected with each other; the upper section arm is hinged into a four-bar structure through four fulcrum shafts by an upper cantilever, a lower cantilever, a supporting seat and a hanging seat; the method is characterized in that: the upper end of the lower section arm is connected with a supporting seat, and the supporting seat is provided with a through hole leading to the lower section arm; the lower joint arm is provided with a cavity, a spring component is arranged in the cavity, one end of the spring component acts on the cavity, the other end of the spring component penetrates through the through hole of the supporting seat and acts on the upper cantilever or the lower cantilever outside the fulcrum shaft, and therefore a moment for supporting the upper joint arm to hover is generated.
The spring assembly comprises a tension spring, a nut sliding block and a bolt; the nut sliding block is arranged in the guide groove of the lower joint arm in a sliding manner and is driven to shift by a bolt which can be rotatably positioned in the cavity; one end of the tension spring is hung on the nut sliding block, and the other end of the tension spring passes through the supporting seat through the steel wire rope and is hung on the upper cantilever or the lower cantilever.
The spring assembly comprises a tension spring, a nut seat and a bolt; the nut seat is embedded and fixed at one end of the tension spring and is driven to shift by a bolt which can be rotatably positioned in the cavity; the other end of the tension spring passes through the supporting seat through the steel wire rope and is hung on the upper cantilever or the lower cantilever.
The lower section arm is provided with an inclined arm section, an upper connecting seat connected with the supporting seat and a lower connecting seat used for fixing the base, a bolt and a tension spring are arranged in a cavity of the inclined arm section, a rolling shaft is arranged at the corner of the cavity of the inclined arm section and the upper connecting seat, and a steel wire rope is lapped on the rolling shaft to be bent; the bolt passes through the reserved hole of the lower connecting seat, and the head of the bolt is abutted against the outer edge of the reserved hole.
The upper connecting seat of the lower section arm is rotationally connected with the supporting seat.
The utility model has the characteristics of ingenious conception, reasonable design, light structure and wide adjustment range; and in particular, the spring assembly is arranged in the cavity of the lower arm, so that the weight of the upper arm is reduced, the volume is also reduced, the weight is directly transferred onto a fixed object by using the lower arm, the defect that the head of the traditional adjusting arm is light in weight and the foot is overcome, and the hovering radius of the double arm is larger.
Description of the drawings:
the utility model is further described with reference to the following specific drawings:
FIG. 1 is a schematic diagram of a display arm
FIG. 2 is a schematic cross-sectional view of a cantilever on a display arm
FIG. 3 is an exploded view of a display arm
Wherein the method comprises the steps of
100-upper arm segment;
1-upper cantilever; 11-torsion axis;
2-a lower cantilever;
3-a supporting seat; 31-a through hole;
4-hanging seat;
5-a fulcrum shaft;
6-a spring assembly; 61-a tension spring; 62-nut slider; 63-a bolt; 64-wire rope;
65-plane bearing;
200-lower arm; 201-a chamber; 202-a guide groove; 203-a diagonal arm segment; 204-an upper connecting seat;
205-lower connecting seat; 206-a roller;
the specific embodiment is as follows:
with reference to figures 1, 2 and 3,
a double-joint adjusting arm including an upper joint arm 100 and a lower joint arm 200 connected to each other; the upper arm segment 100 is hinged into a four-bar structure by an upper cantilever 1, a lower cantilever 2, a supporting seat 3 and a hanging seat 4 through four fulcrum shafts 5, so as to realize a pitching adjusting function. The upper end of the lower section arm 200 is connected with the supporting seat 3 to form a support between the upper section arm and the lower section arm; the lower knuckle arm is provided with a chamber 201, and a spring assembly 6 is arranged in the chamber 201, one end of the spring assembly 6 acts on the chamber 201, the other end of the spring assembly passes through a through hole 31 in the supporting seat and acts on the upper cantilever 1 or the lower cantilever 2 outside the fulcrum shaft 6, and the illustration is that acts on the torsion shaft 11 outside the fulcrum shaft of the upper cantilever 1, so that a moment for supporting the upper knuckle arm 100 to hover is generated, and a certain supporting force is provided for the hanging seat 4. The space for accommodating the spring assembly 6 is provided by the lower arm 200, so that the center of gravity is moved downwards and the upper arm body is small, and the adjusting range of the suspension seat 4 can be enlarged.
A spring assembly 6 including a tension spring 61, a nut slider 62 and a bolt 63; the nut slider 62 is slidably disposed in the guide groove 202 of the lower arm and is driven to displace by the bolt 63 rotatably positioned in the chamber 201; one end of the tension spring 61 is hung on the nut slider 62, and the other end passes through the supporting seat 3 through the wire rope 64 and is hung on the torsion shaft 11 of the upper cantilever.
Alternatively, the spring assembly 6 includes a tension spring 61, a nut seat and a bolt 63; the nut seat is embedded at one end of the tension spring 61 and is driven to shift by a bolt 63 rotatably positioned in the chamber; the other end of the tension spring 61 passes through the supporting seat 3 through a wire rope 64 and is hung on the upper cantilever 1. The former is simple to manufacture, the position of the bolt 63 is not limited by a tension spring, and the latter is of a traditional structure and is mature.
As shown, the lower arm 200 is also characterized by an inclined structure having an inclined arm section 203, an upper connecting seat 204 connected to the support seat, and a lower connecting seat 205 for fixing the base, preferably, the upper connecting seat 204 of the lower arm is rotatably connected to the support seat 3, and the upper arm 100 is allowed to rotate appropriately by means of the torsion characteristic of the wire rope 64 to change the orientation of the suspension seat 4. Most of the requirements are generally satisfied by adjusting the rotation position within 180 degrees, and for this purpose, a rotation limit may be provided between the upper connecting seat 204 and the supporting seat 3.
The bolt 63 and the tension spring 61 are arranged in the cavity of the inclined arm section 203, the corner of the cavity of the inclined arm section 203 and the upper connecting seat 204 is provided with a roller 206, and the steel wire rope 64 is lapped on the roller 206 to be bent, so that the resistance can be reduced; the bolt 63 passes through the preformed hole of the lower connecting seat 205, the head of the bolt 63 is propped against the outer edge of the preformed hole, and a plane bearing 65 can be arranged at the propping part of the head and the preformed hole, so that the resistance during adjustment is reduced.
Besides the inclined structure of the lower arm 200, the structure can also be applied to two special cases of vertical and horizontal; if the inclined arm section 203 is in a horizontal structure, the device can be suitable for supporting a product with low height; if the lower arm 200 is of a vertical structure, a column structure is formed, which is suitable for a product supported at a high position, at this time, the bolt 63 may adopt a bevel gear pair to change the adjusting direction, or a dial wheel may be locked on the bolt 63, and the dial wheel exposed on the surface of the lower arm is used for adjusting.
Claims (5)
1. A double-section adjusting arm comprises an upper section arm and a lower section arm which are connected with each other; the upper section arm is hinged into a four-bar structure through four fulcrum shafts by an upper cantilever, a lower cantilever, a supporting seat and a hanging seat; the method is characterized in that: the upper end of the lower section arm is connected with a supporting seat, and the supporting seat is provided with a through hole leading to the lower section arm; the lower joint arm is provided with a cavity, a spring component is arranged in the cavity, one end of the spring component acts on the cavity, the other end of the spring component penetrates through the through hole of the supporting seat and acts on the upper cantilever or the lower cantilever outside the fulcrum shaft, and therefore a moment for supporting the upper joint arm to hover is generated.
2. A two-section adjustment arm according to claim 1, characterized in that: the spring assembly comprises a tension spring, a nut sliding block and a bolt; the nut sliding block is arranged in the guide groove of the lower joint arm in a sliding manner and is driven to shift by a bolt which can be rotatably positioned in the cavity; one end of the tension spring is hung on the nut sliding block, and the other end of the tension spring passes through the supporting seat through the steel wire rope and is hung on the upper cantilever or the lower cantilever.
3. A two-section adjustment arm according to claim 1, characterized in that: the spring assembly comprises a tension spring, a nut seat and a bolt; the nut seat is embedded and fixed at one end of the tension spring and is driven to shift by a bolt which can be rotatably positioned in the cavity;
the other end of the tension spring passes through the supporting seat through the steel wire rope and is hung on the upper cantilever or the lower cantilever.
4. A two-joint adjustment arm according to claim 1, 2 or 3, characterized in that: the lower section arm is provided with an inclined arm section, an upper connecting seat connected with the supporting seat and a lower connecting seat used for fixing the base, a bolt and a tension spring are arranged in a cavity of the inclined arm section, a rolling shaft is arranged at the corner of the cavity of the inclined arm section and the upper connecting seat, and a steel wire rope is lapped on the rolling shaft to be bent;
the bolt passes through the reserved hole of the lower connecting seat, and the head of the bolt is abutted against the outer edge of the reserved hole.
5. A two-section adjustment arm according to claim 4, wherein: the upper connecting seat of the lower arm is rotationally connected with the supporting seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321065293.2U CN219734884U (en) | 2023-05-06 | 2023-05-06 | Double-section adjusting arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321065293.2U CN219734884U (en) | 2023-05-06 | 2023-05-06 | Double-section adjusting arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219734884U true CN219734884U (en) | 2023-09-22 |
Family
ID=88063837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321065293.2U Active CN219734884U (en) | 2023-05-06 | 2023-05-06 | Double-section adjusting arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219734884U (en) |
-
2023
- 2023-05-06 CN CN202321065293.2U patent/CN219734884U/en active Active
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