TWM468594U - Automatic elevating and self-returning gas spring structure - Google Patents

Description

Automatic rise and return air bar construction

This creation relates to a pneumatic rod structure that automatically raises and homing, and in particular to a gas pressure rod construct that automatically raises and positions the seat surface when a person leaves the chair.

According to the general pneumatic chair, a gas pressure bar is arranged between the seat surface and the seat (foot), and the air pressure bar can provide the rotation of the seat surface and adjust the height. The chair is widely used, but the conventional chair does not have the function of automatically raising and resetting the seat surface. In other words, when the user turns away from the side and then leaves the seat, the height of the seat surface of the chair and The angle stays in the rotated position and does not automatically return to the initial position. Therefore, in the waiting room (mechanical) room, conference room, library, bar and other occasions, the chair piece often presents a messy situation with different orientations of the chair surface, so that the field service personnel need to manually use the chair piece one by one. The seat surface is adjusted to a predetermined height and angle to be neatly arranged. The design of this conventional chair has obviously been improved, and if a chair can be designed to automatically restore the initial height and direction of the chair surface, it will provide a neat and beautiful hardware environment, and The design will also make the chair more novel and interesting in use. Therefore, how to solve the above problems becomes the goal that the creator wants to improve.

The purpose of the creation of this case is to improve the chair surface of the conventional chair. The initial height and direction are missing. In this case, a pneumatic rod structure is provided, which can automatically provide the initial height and direction of the chair surface after being installed on the chair.

In order to achieve this goal, the case mainly consists of an outer tube, a liner and a gas pressure rod. The bottom end edge of the liner is provided with an inclined curved surface, the inclined curved surface forms an positioning point, and a through slot is formed on the inner side wall surface of the liner. The outer surface of the gas pressure bar is provided with a bump which can correspond to the slot of the liner so that the gas pressure rod is inserted into the outer tube from the upper end of the liner. The top end of the piston rod of the gas pressure bar has a piston head, the piston head is provided with an annular groove, and a vent hole is arranged at the top end of the piston head, the vent hole is connected with the annular groove, and the annular groove is provided for a rubber ring Embedded. Thereby, the rubber ring of the piston head has the function of blocking the flow of the gas above and below, and when the pressure of the gas pressure bar is heavy, the pressure of the upper end of the piston head increases, so that the rubber ring is located below the annular groove, so that the piston head is up and down. It is blocked and cannot be connected, so as to achieve the positioning effect; on the contrary, when the pressure of the pressure bar is reduced, the piston head will have a downward force due to the upper pressure, and the apron is located in the annular groove due to the downward force. Above the groove, the venting hole at the top end of the piston head forms a gas passage with the annular groove, so that the gas under the piston head extends to the gas passage and escapes to the other side of the piston head, so that the gas pressure rod can automatically rise; When the displacement is upward, the bumps on the surface are also displaced until the arcuate surface of the bottom edge of the liner is reached. The bump rotates along the inclined arc surface and stops after the positioning point. Has the effect of turning positive homing.

10‧‧‧External management

11‧‧‧Binding end

12‧‧‧through holes

20‧‧‧ liner

21‧‧‧ oblique curved surface

22‧‧‧Location points

23‧‧‧Slots

30‧‧‧Air pressure bar

31‧‧‧Bumps

32‧‧‧ piston rod

321‧‧‧ piston head

322‧‧‧ring groove

323‧‧‧ venting holes

324‧‧‧ aprons

33‧‧‧ Clips

34‧‧‧Air valve button

40‧‧‧ Chairs

41‧‧‧Base

42‧‧‧ Chair

43‧‧‧Connecting piece

44‧‧‧Adjustment rod

The first figure shows a perspective exploded structural view of a specific embodiment of the present invention; the second figure shows a cross-sectional structural view of a specific embodiment of the present invention; and the third figure shows a schematic view of the piston head operation of the specific embodiment of the present invention (1); The figure shows a schematic diagram of the action of the piston head of the specific embodiment of the present invention (2); 5 is a perspective view showing a compression bar of a specific embodiment of the present invention; a sixth view showing a perspective view of a gas bar of a specific embodiment of the present invention; and a seventh view showing a gas bar projection of a specific embodiment of the present invention; The eighth figure shows a schematic diagram of the actual installation of the specific embodiment of the present invention.

The technical content, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments. Before the present invention is described in detail, the drawings are intended to explain the basic structure of the present invention in a schematic manner, and therefore only the structures or elements related to the present invention are shown in the drawings, and the structural shapes are shown, The size, proportion, or number of components are a selective design, which is described first.

Referring to the first drawing, a perspective view of a top view of a specific embodiment of the present invention is shown; and a second drawing is a cross-sectional structural view of a specific embodiment of the present invention. The specific embodiment of the present invention comprises an outer tube 10, a liner 20 and a gas pressure rod 30. The outer tube 10 is a hollow tube body, and the lower end edge is formed with a tubular end portion 11 and the bottom end surface is closed. It has a consistent perforation of 12 people.

The liner 20 is a hollow tubular body which can be placed into the upper end edge of the outer tube 10, and the bottom end edge of the liner 20 is provided with an inclined curved surface 21, and the oblique curved surface 21 is arranged to form a positioning. Point 22; and a through hole 23 is provided on the inner wall surface of the liner 20.

The outer surface of the gas pressure bar 30 is provided with a bump 31 corresponding to the slot 23 of the liner 20, so that the gas pressure bar 30 is inserted into the outer tube 10 from the upper end of the liner, and the gas pressure rod 30 has a piston rod 32, the lower end of which is just through the outer tube 10 The hole 12 is fixed to the outer tube 10 by a clip 33; thereby, the gas rod 30 is filled with a predetermined gas pressure so that the piston rod 32 has the action of the gas button 34. , the function of lower displacement and closed lock position. Furthermore, the piston rod 32 has a piston head 321 at the top end thereof, and the piston head 321 is provided with an annular groove 322. The top end of the piston head 321 is provided with a venting hole 323, and the venting hole 323 is connected to the annular groove 322. The annular groove 322 can be embedded by a rubber ring 324, and the width of the rubber ring 324 is slightly smaller than the width of the annular groove 322, and the outer diameter of the rubber ring 324 is slightly larger than the inner diameter of the annular groove 322.

In an actual assembly example, the liner 20 is first placed tightly into the upper end edge of the outer tube 10, and the projection 31 of the gas pressure bar 30 corresponds to the slot 23 of the liner 20, so that the gas pressure rod 30 can be smoothly worn. The outer tube 10 is placed in the outer tube 10, and the lower end of the piston rod 32 is passed through the through hole 12, and then clamped and fixed by the clip 33; by the above design, the outer tube 10, the liner 20 and the gas rod 30 are assembled. Extremely convenient and simple.

Through the design of the top piston head 321 of the piston rod 32, the rubber ring 324 of the piston head 321 acts to block the flow of the upper and lower gas. When the gas pressure bar 30 receives a small amount of pressure (the person rides the seat surface), the gas has The compressibility causes the pressure at the upper end of the piston head 321 to increase, and the weight of the occupant is supported and positioned. If the person presses the adjustment lever 44 to touch the air pressure valve 34 at the top end of the gas pressure bar 30, the gas can be applied to the upper and lower ends of the piston head 321 . Circulation causes the chair 40 to descend; conversely, when the pressure of the pressure bar 30 is lost (when the person leaves the seat), the piston head 321 will have a downward force due to the upper pressure, and the apron 324 is due to the lower The force is moved above the annular groove 322, and the gas under the piston head 321 is located above the annular groove 322 by the rubber ring 324, the rubber ring 324 is matched with the annular groove 322, and the top end of the piston head 321 is ventilated. The hole 323 is disposed to form a gas passage, which is below the piston head 321 The gas escapes the gas passage and escapes above the piston head 321, which constitutes the action of the gas pressure rod 30 rising (as shown in Figures 3 and 4).

Referring to the fifth, sixth and seventh figures, through the combination of the outer tube 10, the liner 20 and the gas pressure rod 30, when the gas pressure bar 30 is released (the person leaves the seat surface), the bottom end of the piston rod 32 is fixed to The through hole 12 of the outer tube 10 causes the gas bar 30 to be displaced upward, and the bump 31 on the surface of the gas bar 30 is also displaced upward at the same time until it abuts against the inclined surface 21 of the bottom edge of the liner 20, and then obliquely The beveling factor of the curved surface 21 causes the convex block 31 to rotate after the inclined curved surface 21 to the positioning point 22, and the stroke action keeps the gas pressure bar 30 at the same angle (predetermined front side) when it rises to a high point.

Referring to the eighth embodiment, with the above configuration, the joint end 11 of the lower end edge of the outer tube 10 is inserted and fixed on the base 41 of a chair 40, and the top of the gas pressure rod 30 is coupled to the bottom of the seat 42. The connecting piece 43 opens and closes the gas valve button 34 at the top end of the gas pressure bar 30 by pressing the adjusting rod 44, so that the piston rod 32 releases the gas pressure bar 30 to adjust the height of the seat surface 42 to achieve the purpose of lifting the chair member 40. In particular, when the person leaves the seat surface 42, the pressure of pressing down the gas pressure bar 30 disappears, and the piston head 321 generates a downward force due to the upper pressure, and the rubber ring 324 is located in the annular groove due to the downward force. Above the 322, the gas under the piston head 321 is transmitted through the vent hole 323 and escapes to the other side of the piston head 321 , so that the gas pressure bar 30 rises due to the gas in the air chamber, thereby making the seat surface of the chair 40 42 has the effect of automatically generating height. In addition, while the gas pressure bar 30 is rising, the bump 31 on the surface thereof is also displaced upward at the same time to be in contact with the inclined curved surface 21 of the bottom end edge of the liner 20, and the gas pressure rod 30 is rotated by the inclined surface of the inclined curved surface 21. Until the positioning point 22 is stopped, this rotation stroke causes the seat surface 42 of the chair 40 to rise to a high point to face the same predetermined front direction.

According to the above structure, the pressure bar 30 of the embodiment of the present invention can automatically raise the seat surface 42 when the pressure bar 30 is released, and when the gas pressure bar 30 moves up, the convex block 31 on the surface thereof is also displaced upward at the same time, so that it interferes with the lining. The inclined curved surface 21 of the bottom end edge of the tube 20 automatically returns the seat surface 42 to the home position. The structure is also convenient for processing and assembly due to the simplified design, thereby increasing various benefits. However, it is obvious that the description of the structure of the present invention in the above embodiments is merely a preferred embodiment of the present invention, and is not intended to limit the scope of the patent application of the present invention; other things that have been completed without departing from the spirit disclosed in the present disclosure. Modifications or modifications are intended to be included in the scope of the following patent application. Moreover, although the structure of the present invention is particularly suitable for the field of fixed-type pneumatic rods and chairs, and is illustrated by way of example in the drawings, it is only a preferred range of use, and should not be taken as a limitation. The limitation of the scope of other applicable chair structures is the applicable field of the case.

It can be seen from the above description and the preferred embodiments shown in the drawings that the present invention has significant advancement and practical effects compared with the conventional similar articles, and the technical means and structural features used in the present invention, It was developed by the creator of the case. The case has been in conformity with the requirements of the patent, and the application has been filed according to law, and the patent right is prayed.

10‧‧‧External management

11‧‧‧Binding end

12‧‧‧through holes

20‧‧‧ liner

21‧‧‧ oblique curved surface

22‧‧‧Location points

23‧‧‧Slots

30‧‧‧Air pressure bar

31‧‧‧Bumps

32‧‧‧ piston rod

33‧‧‧ Clips

34‧‧‧Air valve button

Claims (2)

The utility model relates to a pneumatic rod structure which is automatically raised and returned, which mainly comprises an outer tube, a liner and a gas pressure rod; the lower end edge of the outer tube forms a joint end, which can be inserted and fixed on the base of the chair, the liner can be Pressing into the upper end edge of the outer tube, a gas pressure rod can be inserted into the outer tube by the upper end of the liner, and the gas rod has a piston rod, and the lower end of the rod rod can be fixed by a clip. At the bottom of the tube, the gas pressure bar is filled with a predetermined gas pressure, so that the piston rod has the functions of upper and lower displacement and closed locking position under the action of the gas valve button; the improvement is that the bottom end edge of the liner is provided An inclined curved surface, the inclined curved surface forms an positioning point, and a through slot is formed on the inner side wall surface of the liner; the outer surface of the gas pressure rod is provided with a convex block, and the convex block can correspond to the slot of the liner The gas pressure rod is inserted into the outer tube by the upper end of the liner, and the top end of the piston rod of the gas pressure rod has a piston head, the piston head is provided with an annular groove, and a vent hole is arranged at the top end of the piston head, the vent hole The system is connected to the annular groove, and the annular groove is provided for inserting a rubber ring Thereby, the rubber ring of the piston head has the function of blocking the flow of the gas above and below, and when the pressure of the pressure of the gas pressure bar disappears, the piston head will have a downward force due to the upper pressure, and the apron is caused by The downward force is located above the annular groove, and the venting hole at the top end of the piston head forms a gas passage with the annular groove, so that the gas under the piston head extends the gas passage and escapes to the other side of the piston head, so that the gas pressure rod It can automatically rise; when the gas bar is displaced upward, the bumps on the surface are also displaced at the same time until it meets the inclined arc surface of the bottom edge of the liner, and the bump rotates along the inclined arc surface and stops after the positioning point. This stroke action makes the gas pressure bar have the function of turning back to the normal position. The pneumatic rod structure of the automatic raising and homing according to the first aspect of the patent application, wherein the piston head of the top end of the rod of the gas pressure rod can be embedded by a rubber ring, and the width of the rubber ring is slightly smaller than the ring. The groove width, the outer diameter of the apron is slightly larger than the inner diameter of the annular groove.