CN113606430B

CN113606430B - Display support arm

Info

Publication number: CN113606430B
Application number: CN202110748085.1A
Authority: CN
Inventors: 赵振普; 陆赢春
Original assignee: Nantong Jiuzheng Ergonomic Co ltd
Current assignee: Nantong Jiuzheng Ergonomic Co ltd
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2022-09-27
Anticipated expiration: 2041-07-02
Also published as: CN113606430A

Abstract

The invention relates to the technical field of display supports, in particular to a support arm of a display support, which comprises: the first connector, the second connector, the fixed arm and the connecting arm form a parallel four-bar linkage structure; the adjusting screw rod and the first adjusting thread sleeve are matched with each other, and when the adjusting screw rod rotates, the position of the first adjusting thread sleeve on the adjusting screw rod changes; the transmission mechanism is in transmission connection with the first connecting head and the adjusting screw rod, and drives the adjusting screw rod to rotate when the first connecting head rotates; and the length of the pre-tightening spring is correspondingly changed when the position of the first adjusting threaded sleeve on the adjusting screw rod is changed. According to the invention, the problems that the deformation amount of the pre-tightening spring is small and the larger weight of the display cannot be borne due to small change of the diagonal distance of the parallel four-bar linkage when the parallel four-bar linkage deforms are avoided, and the adjustment is more labor-saving and more convenient.

Description

Display support arm

Technical Field

The invention relates to the technical field of display supports, in particular to a support arm of a display support.

Background

Along with the development of LCD and LED display, compare with fixed display, people are more and more high to the nimble demand of display when handling official business, need the regulation of display about, also can satisfy the tensile demand of distance for the display support needs can satisfy nimble convenient user demand of adjusting.

In the prior art, the adjusting principle of the display support is a parallel four-bar mechanism, and the display support is realized by matching with a pre-tightening spring, but the pre-tightening spring is compressed mainly by an adjusting rod which penetrates through the diagonal line of the parallel four-bar mechanism, the pre-tightening spring is arranged on the adjusting rod, when the parallel four-bar mechanism deforms, due to the change of the distance between the diagonal lines, the adjusting rod extrudes the pre-tightening spring, and the pre-tightening spring provides counter force, so that the parallel four-bar mechanism is fixed.

However, in the prior art, because the parallel four-bar linkage mechanism is usually arranged in the supporting arm, the width of the parallel four-bar linkage is small, the change of the diagonal distance of the parallel four-bar linkage is small when the parallel four-bar linkage is deformed, the deformation amount of the pre-tightening spring is small, and the pre-tightening spring cannot bear larger weight of the display.

In view of the above problems, the present designer is based on the practical experience and professional knowledge that are abundant for many years in engineering application of such products, and is engaged with the application of scholars to actively make research and innovation, so as to create a support arm for a display bracket, which is more practical.

Disclosure of Invention

The invention provides a support arm of a display bracket, thereby effectively solving the problems in the background art.

In order to achieve the purpose, the invention adopts the technical scheme that: a display stand support arm, comprising:

the first connector is connected with the fixed seat, and the second connector is connected with the display;

the fixing arm and the connecting arm are respectively and rotatably connected with the first connector and the second connector to form a parallel four-bar linkage structure, and an accommodating space is formed inside the fixing arm and the connecting arm;

the adjusting screw rod and the first adjusting thread sleeve are arranged in the accommodating space and are matched with each other, and when the adjusting screw rod rotates, the position of the first adjusting thread sleeve on the adjusting screw rod changes;

the transmission mechanism is in transmission connection with the first connecting head and the adjusting screw rod, and drives the adjusting screw rod to rotate when the first connecting head rotates;

and the pre-tightening spring is sleeved on the adjusting screw rod, and when the position of the first adjusting threaded sleeve on the adjusting screw rod is changed, the length of the pre-tightening spring is correspondingly changed.

Further, the transmission mechanism includes:

the rotating pin is arranged at the rotating connection position of the first connecting head and the fixed arm, and the first connecting head and the fixed arm rotate by taking the rotating pin as a rotating axis;

the first transmission gear is arranged on the rotating pin and rotates along with the first connecting joint;

the second transmission gear is rotatably arranged inside the fixed arm and is matched with the first transmission gear;

and one of the first bevel gears is fixedly arranged on the second transmission gear and rotates along with the second transmission gear, the other first bevel gear is fixedly arranged at one end of the adjusting screw close to the first connecting head and rotates along with the adjusting screw, and the two first bevel gears are matched with each other to convert the rotating direction and transmit the rotating direction of the first connecting head to the rotating direction of the adjusting screw.

Furthermore, the middle part of the rotating pin is of a polygonal structure, the two ends of the rotating pin are of circular structures, the circular structures are rotatably connected with the fixed arm, polygonal connecting holes are correspondingly formed in the first connecting head, and the rotating pin is driven to rotate when the first connecting head rotates.

Furthermore, a first thread section and a second thread section are arranged on the adjusting screw, the rotation directions of the threads of the first thread section and the second thread section are the same, the diameter of the first thread section is smaller than that of the second thread section, the first thread section is located at one end, close to the first connecting head, of the adjusting screw, the second thread section is located at one end, far away from the first connecting head, of the first thread section, the first adjusting thread sleeve is matched with the second thread section, a brake seat is sleeved on the first thread section, the brake seat rotates along with the adjusting screw, a rotating spring is arranged on the brake seat, and the rotating spring limits the rotation of the brake seat.

Furthermore, a pressure spring is arranged between the brake base and the first adjusting threaded sleeve and limits the brake base and the first adjusting threaded sleeve to approach each other.

Further, adjusting screw is being close to the one end of second connector is provided with adjustment mechanism, adjustment mechanism includes:

the adjusting threaded column is at least partially sleeved on the adjusting screw rod, and the adjusting threaded column and the adjusting screw rod can rotate mutually;

the second adjusting threaded sleeve is sleeved on the adjusting threaded column and matched with the adjusting threaded column, and when the adjusting threaded column rotates, the position of the second adjusting threaded sleeve on the adjusting threaded column is changed;

and one of the two second bevel gears is fixedly connected with the adjusting threaded column and rotates along with the adjusting threaded column, the other second bevel gear is rotatably connected with the fixed arm and at least partially extends out of the accommodating space, and the two second bevel gears are mutually matched to convert the rotating direction.

Furthermore, the fixed arm is provided with a through hole at the position where the other second bevel gear is arranged, and an adjusting hole is arranged at one end of the other second bevel gear, which partially extends out of the accommodating space.

Further, be provided with the viewing aperture on the fixed arm, the viewing aperture is used for to the second adjustment thread bush position is observed.

The invention has the beneficial effects that: the invention has the advantages that the first connector, the second connector, the fixed arm, the connecting arm, the adjusting screw rod, the first adjusting thread bushing, the transmission mechanism and the pre-tightening spring are arranged, the first connector, the second connector, the fixed arm and the connecting arm form a parallel four-bar linkage structure, the transmission mechanism converts the rotation of the first connector into the rotation of the adjusting screw rod, so that the position of the first adjusting thread bushing on the adjusting screw rod is changed, the length of the pre-tightening spring is changed, the problem that the change of the diagonal distance of the parallel four-bar linkage is small when the parallel four-bar linkage is deformed is solved through ingenious design, the deformation quantity of the pre-tightening spring is small, and larger display weight cannot be borne, the deformation range of the pre-tightening spring is larger, larger display weight can be borne, the pre-tightening force of the pre-tightening spring does not need to be increased, and labor is saved during adjustment of the display, is more convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is an enlarged view of a portion of FIG. 2 at B;

FIG. 5 is a schematic view of the structure with the securing arm partially hidden;

FIG. 6 is a schematic structural view of the accommodating space;

FIG. 7 is a front view of FIG. 6;

FIG. 8 is a schematic view of a first connector;

fig. 9 is a schematic structural view of the adjusting screw.

Reference numerals: 1. a first connector; 11. connecting holes; 2. a second connector; 3. a fixed arm; 31. an observation port; 4. a connecting arm; 5. adjusting the screw rod; 51. a first thread segment; 52. a second thread segment; 521. a brake seat; 522. a rotating spring; 523. a pressure spring; 53. an adjustment mechanism; 531. adjusting the threaded column; 532. a second adjusting threaded sleeve; 533. a second bevel gear; 534. an adjustment hole; 6. a first adjusting threaded sleeve; 7. a transmission mechanism; 71. a rotation pin; 72. a first drive gear; 73. a second transmission gear; 74. a first bevel gear; 8. and pre-tightening the spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 9: a display stand support arm, comprising:

the display device comprises a first connector 1 and a second connector 2, wherein the first connector 1 is connected with a fixed seat, and the second connector 2 is connected with a display;

the fixing arm 3 and the connecting arm 4 are respectively and rotatably connected with the first connector 1 and the second connector 2 to form a parallel four-bar linkage structure, and an accommodating space is formed inside the fixing arm 3 and the connecting arm 4;

the adjusting screw rod 5 and the first adjusting threaded sleeve 6 are arranged in the accommodating space, the adjusting screw rod 5 and the first adjusting threaded sleeve 6 are matched with each other, and when the adjusting screw rod 5 rotates, the position of the first adjusting threaded sleeve 6 on the adjusting screw rod 5 changes;

the transmission mechanism 7 is in transmission connection with the first connecting head 1 and the adjusting screw 5, and when the first connecting head 1 rotates, the adjusting screw 5 is driven to rotate;

and the pre-tightening spring 8 is sleeved on the adjusting screw rod 5, and when the position of the first adjusting threaded sleeve 6 on the adjusting screw rod 5 changes, the length of the pre-tightening spring 8 correspondingly changes.

By arranging the first connector 1, the second connector 2, the fixed arm 3, the connecting arm 4, the adjusting screw rod 5, the first adjusting threaded sleeve 6, the transmission mechanism 7 and the pre-tightening spring 8, the first connector 1, the second connector 2, the fixed arm 3 and the connecting arm 4 form a parallel four-bar linkage structure, the transmission mechanism 7 converts the rotation of the first connector 1 into the rotation of the adjusting screw rod 5, so as to change the position of the first adjusting threaded sleeve 6 on the adjusting screw rod 5, thereby changing the length of the pre-tightening spring 8, and by ingenious design, the problem that the change of the diagonal distance of the parallel four-bar linkage is small when the parallel four-bar linkage deforms is avoided, so that the deformation amount of the pre-tightening spring 8 is small, and the larger display weight cannot be borne, the deformation range of the pre-tightening spring 8 is larger, the larger display weight can be borne, and the pre-tightening force of the pre-tightening spring 8 does not need to be increased, when the display is adjusted, the adjustment is labor-saving and more convenient.

In the present embodiment, the transmission mechanism 7 includes:

the rotating pin 71, the rotating pin 71 is arranged at the rotating connection position of the first connector 1 and the fixed arm 3, and the first connector 1 and the fixed arm 3 rotate by taking the rotating pin 71 as a rotating axis;

a first transmission gear 72, the first transmission gear 72 being provided on the rotation pin 71 and rotating with the first joint 1;

the second transmission gear 73 is rotatably arranged inside the fixed arm 3, and is matched with the first transmission gear 72;

and one of the two first bevel gears 74 is fixedly arranged on the second transmission gear 73 and rotates along with the second transmission gear 73, the other first bevel gear 74 is fixedly arranged at one end of the adjusting screw 5 close to the first connecting head 1 and rotates along with the adjusting screw 5, and the two first bevel gears 74 are mutually matched to convert the rotating direction and transmit the rotating direction of the first connecting head 1 to the rotating direction of the adjusting screw 5.

Through setting up the drive pin, first drive gear 72, second drive gear 73 and two first bevel gears 74, thereby with the rotatory transmission of first connector 1 to the rotation of drive adjusting screw 5, thereby when adjusting the display, the display drives first connector 1 and rotates, adjusting screw 5 is rotatory to drive the change of first regulation thread bush 6 position, thereby change pretension spring 8's length, pretension spring 8 provides a counter-force and supports the display, the driven setting of tooth, make the transmission more accurate, the bearing capacity is bigger.

In the above embodiment, it is preferable that the middle portion of the rotation pin 71 has a polygonal structure, and both ends have a circular structure, the circular structure is rotatably connected to the fixed arm 3, the first connection head 1 is correspondingly provided with the polygonal connection hole 11, and the rotation pin 71 is rotated when the first connection head 1 is rotated.

Through the arrangement of the rotating pin 71, the middle part of the rotating pin 71 is of a polygonal structure, the two ends of the rotating pin 71 are of circular structures, the polygonal connecting holes 11 are correspondingly formed in the first connecting head 1, and when the first connecting head 1 rotates, the rotating pin 71 is driven to rotate, so that the stability of transmission between the first connecting head 1 and the adjusting threaded rod is ensured.

Preferably, as for the above embodiment, the adjusting screw 5 is provided with a first thread section 51 and a second thread section 52, the thread rotation directions of the first thread section 51 and the second thread section 52 are the same, the diameter of the first thread section 51 is smaller than that of the second thread section 52, the first thread section 51 is located at one end of the adjusting screw 5 close to the first connector 1, the second thread section 52 is located at one end of the first thread section 51 far away from the first connector 1, the first adjusting thread sleeve 6 and the second thread section 52 are matched with each other, the first thread section 51 is sleeved with the brake base 521, the brake base 521 rotates along with the adjusting screw 5, the brake base 521 is provided with a rotating spring 522, and the rotating spring 522 limits the rotation of the brake base 521.

Through setting up first screw thread section 51 and second screw thread section 52, first screw thread section 51 and second screw thread section 52 screw thread direction of rotation are the same, first screw thread section 51 diameter is less than second screw thread section 52, first regulation thread bush 6 and second screw thread section 52 mutually support, the cover is equipped with brake seat 521 on the first screw thread section 51, brake seat 521 is rotatory along with adjusting screw 5, be provided with rotating spring 522 on the brake seat 521, rotating spring 522 restriction brake seat 521 is rotatory, thereby it is rotatory to work as adjusting screw, rotating spring 522 provides the resistance to the rotation of brake seat 521, thereby provide the resistance to the rotation of first bevel gear 74, prevent that first connector 1 from rotating, guaranteed to the display regulation back, the state of display keeps unchangeable.

As a preferable example of the above embodiment, a compression spring 523 is disposed between the brake base 521 and the first adjusting screw sleeve 6, and the compression spring 523 restricts the brake base 521 and the first adjusting screw sleeve 6 from approaching each other.

In order to prevent the first adjusting threaded sleeve 6 and the brake base 521 from interfering with each other, a pressure spring 523 is arranged between the brake base 521 and the first adjusting threaded sleeve 6 to limit the two to approach each other, thereby ensuring the stability of operation.

In this embodiment, the adjusting screw 5 is provided with an adjusting mechanism 53 at an end close to the second connector 2, and the adjusting mechanism 53 includes:

the adjusting threaded column 531, at least part of the adjusting threaded column 531 is sleeved on the adjusting screw 5, and the adjusting threaded column 531 and the adjusting screw 5 can rotate mutually;

the second adjusting threaded sleeve 532 is sleeved on the adjusting threaded column 531, is matched with the adjusting threaded column 531, and changes the position of the second adjusting threaded sleeve 532 on the adjusting threaded column 531 when the adjusting threaded column 531 rotates;

and two second bevel gears 533, one of the second bevel gears 533 is fixedly connected with the adjusting threaded column 531 and rotates with the adjusting threaded column 531, the other second bevel gear 533 is rotatably connected with the fixed arm 3 and at least partially extends out of the accommodating space, and the two second bevel gears 533 are mutually matched to convert the rotation direction.

Through setting up adjustment mechanism 53, adjustment mechanism 53 is including adjusting threaded post 531, second regulation thread bush 532 and two second bevel gear 533, two second bevel gear 533 cooperate each other to rotate the direction of rotation and change, one of them second bevel gear 533 with adjust threaded post 531 fixed connection and along with adjusting threaded post 531 and rotate, another second bevel gear 533 rotates with fixed arm 3 and is connected and at least local extension outside the accommodation space, thereby can adjust through second bevel gear 533, thereby adjust the pretightning force of pretension spring 8, with the display that adapts to different weight, the commonality has been increased.

As a preferred embodiment, the fixed arm 3 is provided with a through hole at the position where the other second bevel gear 533 is provided, and an adjusting hole 534 is provided at one end of the other second bevel gear 533 which partially extends out of the accommodating space.

Through set up the through-hole on fixed arm 3, the one end that the part extended to outside the accommodation space on another second bevel gear 533 is provided with regulation hole 534 to conveniently adjust second bevel gear 533, thereby adjust the pretightning force of pretension spring 8, easy operation is convenient.

As a preferable example of the above embodiment, the fixing arm 3 is provided with the observation port 31, and the observation port 31 is used for observing the position of the second adjustment threaded sleeve 532.

Because the pre-tightening spring 8 and the adjusting mechanism 53 are arranged inside the fixed arm 3 and the connecting arm 4, when the pre-tightening spring 8 is adjusted, the position of the second adjusting threaded sleeve 532 can be observed more conveniently by arranging the observation port 31, so that the adjustment is more definite, and the use convenience is improved.

It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A display stand support arm, comprising:

the display device comprises a first connector (1) and a second connector (2), wherein the first connector (1) is connected with a fixed seat, and the second connector (2) is connected with a display;

the fixing arm (3) and the connecting arm (4) are respectively and rotatably connected with the first connector (1) and the second connector (2) to form a parallel four-bar linkage structure, and an accommodating space is formed inside the fixing arm (3) and the connecting arm (4);

the adjusting screw rod (5) and the first adjusting threaded sleeve (6) are arranged in the accommodating space, the adjusting screw rod (5) and the first adjusting threaded sleeve (6) are matched with each other, and when the adjusting screw rod (5) rotates, the position of the first adjusting threaded sleeve (6) on the adjusting screw rod (5) changes;

the transmission mechanism (7) is in transmission connection with the first connecting head (1) and the adjusting screw rod (5), and when the first connecting head (1) rotates, the adjusting screw rod (5) is driven to rotate;

the adjusting screw rod (5) is sleeved with the pre-tightening spring (8), and when the position of the first adjusting threaded sleeve (6) on the adjusting screw rod (5) changes, the length of the pre-tightening spring (8) correspondingly changes.

2. The display stand support arm according to claim 1, wherein the transmission mechanism (7) comprises:

the rotating pin (71), the rotating pin (71) is arranged at the rotating connection position of the first connecting head (1) and the fixed arm (3), and the first connecting head (1) and the fixed arm (3) rotate by taking the rotating pin (71) as a rotating axis;

a first transmission gear (72), the first transmission gear (72) being provided on the rotation pin (71) and rotating with the first joint (1);

the second transmission gear (73), the said second transmission gear (73) is rotated and set up in the said fixed arm (3), and cooperate with said first transmission gear (72);

and one of the first bevel gears (74) is fixedly arranged on the second transmission gear (73) and rotates along with the second transmission gear (73), the other first bevel gear (74) is fixedly arranged at one end, close to the first connecting head (1), of the adjusting screw rod (5) and rotates along with the adjusting screw rod (5), the two first bevel gears (74) are matched with each other to convert the rotating direction, and the rotating direction of the first connecting head (1) is transmitted to the rotating direction of the adjusting screw rod (5).

3. The support arm for a monitor stand according to claim 2, wherein the middle part of the rotation pin (71) is a polygonal structure, the two ends of the rotation pin are circular structures, the circular structures are rotatably connected with the fixed arm (3), the first connection head (1) is correspondingly provided with polygonal connection holes (11), and when the first connection head (1) rotates, the rotation pin (71) is driven to rotate.

4. The monitor support arm according to claim 3, wherein the adjusting screw (5) is provided with a first thread section (51) and a second thread section (52), the thread rotating directions of the first thread section (51) and the second thread section (52) are the same, the diameter of the first thread section (51) is smaller than that of the second thread section (52), the first thread section (51) is located at one end of the adjusting screw (5) close to the first connector (1), the second thread section (52) is located at one end of the first thread section (51) far away from the first connector (1), the first adjusting thread sleeve (6) and the second thread section (52) are mutually matched, the first thread section (51) is sleeved with a brake seat (521), and the brake seat (521) rotates along with the adjusting screw (5), the brake seat (521) is provided with a rotating spring (522), and the rotating spring (522) limits the rotation of the brake seat (521).

5. The display support arm according to claim 4, wherein a compression spring (523) is arranged between the brake base (521) and the first adjusting threaded sleeve (6), the compression spring (523) limiting the mutual approach between the brake base (521) and the first adjusting threaded sleeve (6).

6. Display stand support arm according to claim 1, wherein the adjusting screw (5) is provided with an adjusting mechanism (53) at an end close to the second connector (2), the adjusting mechanism (53) comprising:

the adjusting threaded column (531), at least part of the adjusting threaded column (531) is sleeved on the adjusting screw rod (5), and the adjusting threaded column (531) and the adjusting screw rod (5) can rotate mutually;

the second adjusting threaded sleeve (532) is sleeved on the adjusting threaded column (531) and is matched with the adjusting threaded column (531), and when the adjusting threaded column (531) rotates, the position of the second adjusting threaded sleeve (532) on the adjusting threaded column (531) is changed;

two second bevel gears (533), wherein one of the second bevel gears (533) is fixedly connected with the adjusting threaded column (531) and rotates along with the adjusting threaded column (531), the other one of the second bevel gears (533) is rotatably connected with the fixing arm (3) and at least partially extends out of the accommodating space, and the two second bevel gears (533) are mutually matched to convert the rotating direction.

7. The monitor support arm according to claim 6, wherein said fixed arm (3) is provided with a through hole at the position where another said second bevel gear (533) is provided, and an adjusting hole (534) is provided at one end of another said second bevel gear (533) partially extending out of said accommodating space.

8. The monitor support arm according to claim 7, wherein said fixed arm (3) is provided with a viewing port (31), said viewing port (31) being used for viewing the position of said second adjustment threaded sleeve (532).