CN212117620U - But bar chair of high accuracy height-adjusting - Google Patents
But bar chair of high accuracy height-adjusting Download PDFInfo
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- CN212117620U CN212117620U CN202020577182.XU CN202020577182U CN212117620U CN 212117620 U CN212117620 U CN 212117620U CN 202020577182 U CN202020577182 U CN 202020577182U CN 212117620 U CN212117620 U CN 212117620U
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- backup pad
- bar chair
- height
- rotor arm
- arm
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Abstract
The utility model provides a but high accuracy height-adjusting's bar chair belongs to bar chair technical field. The bar chair with the high-precision height adjustment comprises a seat plate, a backrest, a first supporting plate, a second supporting plate and a height adjusting piece. The utility model provides a user that the back confession was sat on the bedplate leans on, and the distance between first backup pad and the second backup pad is adjusted to the altitude mixture control spare, and then adjusts the height of bedplate apart from ground, and simple structure adjusts the high precision of bar chair higher.
Description
Technical Field
The utility model belongs to the technical field of the bar chair, a but bar chair of high accuracy height-adjusting is related to.
Background
The existing bar chair is only fixed in height after being prepared, is inconvenient for people with too high or too low height to use the bar chair with the fixed height, has single function, and cannot be adjusted in height to adapt to the use of people with various heights.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the above-mentioned problem that prior art exists, provide a but bar chair of high accuracy height-adjusting, the utility model aims to solve the technical problem that: how to provide a bar chair with high-precision height adjustment.
The purpose of the utility model can be realized by the following technical proposal:
a bar chair with high-precision height adjustment comprises a seat board, a backrest connected to a first end of the top of the seat board, a first supporting plate connected to the bottom of the seat board, a second supporting plate arranged at the bottom of the first supporting plate, a second supporting plate with a top end connected to the first supporting plate and a bottom end connected to the second supporting plate, and a height adjusting part used for adjusting the distance between the first supporting plate and the second supporting plate, wherein the height adjusting part comprises a first rotating arm with a top end rotatably connected to the first end of the first supporting plate, a second rotating arm with a bottom end rotatably connected to the first end of the second supporting plate, a third rotating arm with a top end rotatably connected to the second end of the first supporting plate, a fourth rotating arm with a bottom end rotatably connected to the second end of the second supporting plate, a first rotating pin used for movably connecting the bottom end of the first rotating arm and the top end of the second rotating arm, and a second rotating pin used for movably connecting, The first through hole is arranged in the middle of the first rotating pin, the second through hole is arranged in the middle of the second rotating pin, the first internal thread is arranged on the second through hole, one end of the cylindrical rod sequentially penetrates through the first through hole and the second through hole, and the first external thread portion is arranged on the cylindrical rod and used for being in threaded connection with the first internal thread.
Preferably, the center line of the seat plate, the center line of the first support plate, and the center line of the second support plate coincide with each other.
Preferably, the joint of the first rotating arm and the first supporting plate and the joint of the third rotating arm and the first supporting plate are symmetrical about the center line of the first supporting plate, the joint of the second rotating arm and the second supporting plate and the joint of the fourth rotating arm and the second supporting plate are symmetrical about the center line of the second supporting plate, the lengths of the first rotating arm and the third rotating arm are equal, and the lengths of the second rotating arm and the fourth rotating arm are equal.
Preferably, the two end parts of the cylinder rod are respectively provided with a first stop plate and a second stop plate.
Preferably, the handle and the connecting rod are connected through a connecting rod, one end of the connecting rod is connected to the handle, and the other end of the connecting rod is connected to the first stop plate.
Preferably, the anti-skid device further comprises an anti-skid sleeve sleeved on the handle.
Preferably, the support device further comprises a base connected to the bottom end of the second support plate and support legs fixedly connected to four corners of the base respectively.
Preferably, the base is a cylindrical base, the second supporting plate is a cylindrical supporting plate, a second internal thread is arranged on the inner side wall of the base, and a second external thread portion used for being screwed with the second internal thread is arranged on the periphery of the bottom of the second supporting plate.
Preferably, the support legs are arranged obliquely.
Preferably, the angle between the central lines of the support legs and the base is greater than 0 degree and less than 60 degrees.
The utility model provides a user who sits on the seat leans on, the distance between first backup pad and the second backup pad is adjusted to height that the seat is apart from ground to the height, the cylinder pole rotates towards first predetermined direction, make cylinder pole one end towards the direction motion of keeping away from the second rotating pin, make first external screw thread portion for first internal thread motion, and then stimulate third rotor arm bottom towards the direction motion of being close to first backup pad central line and stimulate fourth rotor arm top towards the direction motion of being close to the second backup pad central line respectively, drive third rotor arm top around the first backup pad second end towards the direction motion of being close to first backup pad central line and drive fourth rotor arm bottom around the second backup pad second end towards the direction motion of being close to the second backup pad central line, thereby increase the total length of third rotor arm and fourth rotor arm, increasing the length between the first support plate and the second support plate, and further respectively pulling the bottom end of the first rotating arm to move towards the direction close to the center line of the first support plate and the top end of the second rotating arm to move towards the direction close to the center line of the second support plate, driving the top end of the first rotating arm to move around the first end of the first support plate towards the direction close to the center line of the first support plate and driving the bottom end of the second rotating arm to move around the first end of the second support plate towards the direction close to the center line of the second support plate, increasing the supporting force of the height adjusting member, and improving the stability of the chair, the cylindrical rod rotates towards a second preset direction, so that one end of the cylindrical rod moves towards the direction close to the second rotating pin, the first external thread part moves relative to the first internal thread, and further respectively pulling the bottom end of the third rotating arm to move towards the direction far from the center line of the first support plate and pulling the, the top end of the third rotating arm is driven to move around the second end of the first supporting plate towards the direction far away from the central line of the first supporting plate and the bottom end of the fourth rotating arm is driven to move around the second end of the second supporting plate towards the direction far away from the central line of the second supporting plate, so that the total length of the third rotating arm and the fourth rotating arm is reduced, the length between the first supporting plate and the second supporting plate is reduced, the bottom end of the first rotating arm is respectively pulled to move towards the direction far away from the central line of the first supporting plate and the top end of the second rotating arm is pulled to move towards the direction far away from the central line of the second supporting plate, the top end of the first rotating arm is driven to move around the first end of the first supporting plate towards the direction far away from the central line of the first supporting plate and the bottom end of the second rotating arm is, the stability of chair is improved, simple structure, and the high precision of adjusting the bar chair is higher.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural view of the connecting rod of the present invention when one end is connected to the handle and the other end is connected to the first stopper plate;
fig. 3 is a schematic structural view of the base of the present invention, wherein the base is screwed to the second external thread portion and the supporting leg is fixedly connected to the base.
In the figure: 1-seat plate, 2-backrest, 3-height adjustment member, 31-cylinder rod, 311-first stop plate, 312-second stop plate, 32-first rotation pin, 33-first rotation arm, 34-second rotation arm, 35-first external thread portion, 36-second rotation pin, 37-third rotation arm, 38-fourth rotation arm, 41-second support plate, 411-second external thread portion, 42-first support plate, 51-link, 52-handle, 53-anti-slip cover, 71-base, 72-support leg.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
Referring to fig. 1, 2 and 3, the bar chair with high precision height adjustment of the present embodiment comprises a seat plate 1, a backrest 2 connected to a first end of a top of the seat plate 1, a first support plate 42 connected to a bottom of the seat plate 1, a second support plate 41 disposed at a bottom of the first support plate 42, a height adjustment member 3 having a top end connected to the first support plate 42 and a bottom end connected to the second support plate 41 for adjusting a distance between the first support plate 42 and the second support plate 41, wherein the height adjustment member 3 comprises a first rotation arm 33 having a top end rotatably connected to the first end of the first support plate 42, a second rotation arm 34 having a bottom end rotatably connected to the first end of the second support plate 41, a third rotation arm 37 having a top end rotatably connected to a second end of the first support plate 42, a fourth rotation arm 38 having a bottom end rotatably connected to the second end of the second support plate 41, a first rotation pin 32 for movably connecting the bottom end of the first rotation arm 33 and the top end, The second rotating pin 36 is used for movably connecting the bottom end of the third rotating arm 37 and the top end of the fourth rotating arm 38, a first through hole is formed in the middle of the first rotating pin 32, a second through hole is formed in the middle of the second rotating pin 36, a first internal thread is formed in the second through hole, the cylindrical rod 31 penetrates through the first through hole and the second through hole in sequence at one end, and the first external thread portion 35 is arranged on the cylindrical rod 31 and is in threaded connection with the first internal thread.
Here, the backrest 2 is leaned on by a user sitting on the seat board 1, the height adjusting member 3 adjusts the distance between the first support plate 42 and the second support plate 41, and thus the height of the seat board 1 from the ground, the cylinder rod 31 is rotated in a first predetermined direction, so that one end of the cylinder rod 31 is moved away from the second rotation pin 36, so that the first male screw portion 35 is moved relative to the first female screw, thereby respectively pulling the bottom end of the third rotation arm 37 to move toward the center line of the first support plate 42 and pulling the top end of the fourth rotation arm 38 to move toward the center line of the second support plate 41, driving the top end of the third rotation arm 37 to move toward the center line of the first support plate 42 around the second end of the first support plate 42 and driving the bottom end of the fourth rotation arm 38 to move toward the center line of the second support plate 41 around the second end of the second support plate 41, thereby increasing the total length of the third and fourth rotating arms 37 and 38, increasing the length between the first and second support plates 42 and 41, and further pulling the bottom end of the first rotating arm 33 to move toward the direction close to the center line of the first support plate 42 and the top end of the second rotating arm 34 to move toward the direction close to the center line of the second support plate 41, respectively, moving the top end of the first rotating arm 33 to move toward the direction close to the center line of the first support plate 42 about the first end of the first support plate 42 and moving the bottom end of the second rotating arm 34 to move toward the direction close to the center line of the second support plate 41 about the first end of the second support plate 41, increasing the supporting force of the height adjusting member 3, increasing the stability of the chair, rotating the cylindrical rod 31 to the second predetermined direction, moving one end of the cylindrical rod 31 to move toward the direction close to the second rotating pin 36, moving the first male screw portion 35 relative to the first female, thereby respectively pulling the bottom end of the third rotating arm 37 to move away from the center line of the first supporting plate 42 and the top end of the fourth rotating arm 38 to move away from the center line of the second supporting plate 41, driving the top end of the third rotating arm 37 to move around the second end of the first supporting plate 42 to move away from the center line of the first supporting plate 42 and driving the bottom end of the fourth rotating arm 38 to move around the second end of the second supporting plate 41 to move away from the center line of the second supporting plate 41, thereby reducing the total length of the third rotating arm 37 and the fourth rotating arm 38, reducing the length between the first supporting plate 42 and the second supporting plate 41, respectively pulling the bottom end of the first rotating arm 33 to move away from the center line of the first supporting plate 42 and pulling the top end of the second rotating arm 34 to move away from the center line of the second supporting plate 41, driving the top end of the first rotating arm 33 to move around the first end of the first supporting plate 42 to move away from the center The bottom end of the second rotating arm 34 moves around the first end of the second supporting plate 41 towards the direction far away from the central line of the second supporting plate 41, so that the supporting force of the height adjusting piece 3 is increased, the stability of the chair is improved, the structure is simple, and the height precision of the bar chair is high. The first rotating arm 33, the second rotating arm 34, the third rotating arm 37 and the fourth rotating arm 38 are all made of G200 type cast steel.
The center line of the seat plate 1, the center line of the first support plate 42, and the center line of the second support plate 41 may coincide, so that the third rotating arm 37, the fourth rotating arm 38, the second rotating arm 34, and the first rotating arm 33 may be pulled when the cylindrical rod 31 rotates, and the height adjusting member 3 may be adjusted.
The junction of the first rotating arm 33 and the first support plate 42 and the junction of the third rotating arm 37 and the first support plate 42 may be symmetrical with respect to the center line of the first support plate 42, the junction of the second rotating arm 34 and the second support plate 41 and the junction of the fourth rotating arm 38 and the second support plate 41 may be symmetrical with respect to the center line of the second support plate 41, the lengths of the first rotating arm 33 and the third rotating arm 37 may be equal, and the lengths of the second rotating arm 34 and the fourth rotating arm 38 may be equal. The top end of the first rotating arm 33 may be movably coupled to the first end of the first support plate 42 by a third rotating pin so that the top end of the first rotating arm 33 may rotate around the first end of the first support plate 42. The bottom end of the second rotating arm 34 may be movably connected to the first end of the second support plate 41 by a fourth rotating pin, so that the bottom top end of the second rotating arm 34 may rotate around the first end of the second support plate 41. The top end of the third rotating arm 37 may be movably coupled to the second end of the first supporting plate 42 by a fifth rotating pin so that the top end of the third rotating arm 37 can rotate around the second end of the first supporting plate 42. The top end of the fourth rotating arm 38 may be movably coupled to the second end of the second support plate 41 by a sixth rotating pin so that the top end of the fourth rotating arm 38 may rotate around the second end of the second support plate 41. The first and third rotating arms 33 and 37 may have the same shape, and the second and fourth rotating arms 34 and 38 may have the same shape. The first rotating arm 33, the second rotating arm 34, the third rotating arm 37 and the fourth rotating arm 38 can be shaped like Jiong, and two symmetrical mounting holes are arranged at two ends of the Jiong shape and are used for mounting rotating pins.
The two end portions of the cylindrical rod 31 may be respectively provided with a first stop plate 311 and a second stop plate 312, the first stop plate 311 may be rotated to drive the cylindrical rod 31, and the second stop plate 312 may be convenient.
The bar chair as the one in this embodiment, which can adjust the height with high precision, may further include a handle 52, a connecting rod 51 having one end connected to the handle 52 and the other end connected to the first stopper plate 311, and the handle 52 is rotated to drive the connecting rod 51, thereby pulling the cylindrical rod 31.
The bar chair with the height capable of being adjusted with high precision in the embodiment can also comprise an anti-slip sleeve 53 sleeved on the handle 52, so that the anti-slip performance of the handle 52 is improved.
The bar chair of the present embodiment may further include a base 71 connected to the bottom end of the second support plate 41, and support legs 72 respectively fixed to four corners of the base 71.
The base 71 can be the cylinder base 71, and the second backup pad 41 can be the cylinder backup pad, and the base 71 inside wall can be equipped with the second internal thread, and second backup pad 41 bottom periphery can be equipped with for the spiro union in second internal thread's second external thread portion 411, conveniently installs base 71 on second backup pad 41, and is simple to handle.
The support legs 72 may be inclined to improve the support of the support legs 72.
The angle between the central lines of the supporting leg 72 and the base 71 can be larger than 0 degree and smaller than 60 degrees, so that the supporting force of the supporting leg 72 can be improved, and the phenomenon that the supporting leg 72 has small effect due to the fact that the base 71 is too far away from the ground can be avoided. The bottom ends of the support legs 72 remain horizontally disposed.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (10)
1. The utility model provides a but bar chair of high accuracy height-adjusting which characterized in that: including bedplate (1), connect in back (2) of bedplate (1) top first end, connect in first backup pad (42) of bedplate (1) bottom, set up in second backup pad (41) of first backup pad (42) bottom, the top is connected in first backup pad (42), the bottom is connected in second backup pad (41), be used for adjusting altitude mixture control spare (3) of the distance between first backup pad (42) and second backup pad (41), altitude mixture control spare (3) include top rotatable coupling in first rotor arm (33) of first backup pad (42) first end, bottom rotatable coupling in second rotor arm (34) of second backup pad (41) first end, top rotatable coupling in third rotor arm (37) of first backup pad (42) second end, bottom rotatable coupling in fourth rotor arm (38) of second backup pad (41) second end, The rotary mechanism comprises a first rotating pin (32) used for movably connecting the bottom end of a first rotating arm (33) and the top end of a second rotating arm (34), a second rotating pin (36) used for movably connecting the bottom end of a third rotating arm (37) and the top end of a fourth rotating arm (38), a first through hole formed in the middle of the first rotating pin (32), a second through hole formed in the middle of the second rotating pin (36), a first internal thread formed in the second through hole, a cylindrical rod (31) with one end penetrating through the first through hole in sequence, a second through hole, a cylindrical rod (31) arranged on the cylindrical rod (31), and a first external thread part (35) used for being connected with the first internal thread in a threaded mode.
2. The bar chair as claimed in claim 1, wherein the height of the bar chair is adjustable with high precision by: the center line of the seat plate (1), the center line of the first support plate (42) and the center line of the second support plate (41) are superposed.
3. The bar chair of claim 1 or 2, wherein the height of the bar chair is adjustable with high precision: the junction of first rotor arm (33) and first backup pad (42), the junction of third rotor arm (37) and first backup pad (42) is about the central line symmetry of first backup pad (42), the junction of second rotor arm (34) and second backup pad (41), the junction of fourth rotor arm (38) and second backup pad (41) is about the central line symmetry of second backup pad (41), the length of first rotor arm (33), third rotor arm (37) equals, the length of second rotor arm (34), fourth rotor arm (38) equals.
4. A bar chair with a height adjusted with high precision as claimed in claim 3, wherein: the two ends of the cylindrical rod (31) are respectively provided with a first stop plate (311) and a second stop plate (312).
5. A bar chair with a height adjusted with high precision as claimed in claim 3, wherein: the handle (52) and the connecting rod (51) are further included, one end of the connecting rod is connected to the handle (52), and the other end of the connecting rod is connected to the first stop plate (311).
6. The bar chair of claim 5, wherein the height of the bar chair is adjustable with high precision: also comprises an anti-slip sleeve (53) sleeved on the handle (52).
7. A bar chair with a height adjusted with high precision as claimed in claim 3, wherein: the support device also comprises a base (71) connected to the bottom end of the second support plate (41) and support legs (72) fixedly connected to four corners of the base (71) respectively.
8. The bar chair of claim 7, wherein the height of the bar chair is adjustable with high precision: base (71) are cylinder base (71), second backup pad (41) are the cylinder backup pad, base (71) inside wall is equipped with the second internal thread, second backup pad (41) bottom periphery is equipped with and is used for spiro union in second internal thread second external thread portion (411).
9. The bar chair as claimed in claim 8, wherein the height of the bar chair is adjustable with high precision by: the supporting legs (72) are arranged obliquely.
10. The bar chair of claim 9, wherein the height of the bar chair is adjustable with high precision: the angle between the central lines of the support legs (72) and the base (71) is more than 0 degree and less than 60 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020577182.XU CN212117620U (en) | 2020-04-17 | 2020-04-17 | But bar chair of high accuracy height-adjusting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020577182.XU CN212117620U (en) | 2020-04-17 | 2020-04-17 | But bar chair of high accuracy height-adjusting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212117620U true CN212117620U (en) | 2020-12-11 |
Family
ID=73690469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020577182.XU Active CN212117620U (en) | 2020-04-17 | 2020-04-17 | But bar chair of high accuracy height-adjusting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212117620U (en) |
-
2020
- 2020-04-17 CN CN202020577182.XU patent/CN212117620U/en active Active
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