阅读说明：本技术 一种课桌用升降装置 (lifting device for desk ) 是由 吴春根 章如良 于 2019-12-03 设计创作，主要内容包括：本发明涉及教课升降桌技术领域,尤其为一种课桌用升降装置,包括主桌面,所述主桌面的底面垂直向下焊接中空支撑杆的一端,所述中空支撑杆的一侧内壁螺纹连接有齿板,所述齿板的有齿一面对接齿轮,所述齿轮的中心垂直套接转动轴承,所述转动轴承的两端垂直焊接在主支撑柱的内侧壁,所述齿轮在远离有齿的一端套接于主支撑柱的侧壁,所述齿轮在靠近主支撑柱的一端侧面边缘焊接有摇把,所述中空支撑杆在有齿板一侧的外侧面镶嵌多个柱形扣,所述柱形扣与中空支撑杆之间设有弹簧,所述中空支撑杆的外壁紧贴主支撑柱的内壁,所述主支撑柱的侧壁设有多个通孔。本发明通过利用齿轮之间的咬合来进行抬升,简单方便同时也高效快捷。(The invention relates to the technical field of teaching lifting tables, in particular to a lifting device for desks, which comprises a main desktop, wherein the bottom surface of the main desktop is vertically and downwards welded with a end of a hollow supporting rod, the inner wall of the side of the hollow supporting rod is in threaded connection with a toothed plate, the toothed plate is in butt joint with a -face butt-joint gear, the center of the gear is vertically sleeved with a rotating bearing, two ends of the rotating bearing are vertically welded on the inner side wall of a main supporting column, the end of the gear far away from the toothed is sleeved on the side wall of the main supporting column, the gear is welded with a crank at the side edge of the end close to the main supporting column, a plurality of cylindrical buckles are embedded on the outer side of the side of the hollow supporting rod, springs are arranged between the cylindrical buckles and the hollow supporting rod, the outer wall of the hollow supporting rod is tightly attached to the inner wall of the main supporting column, and a plurality of through holes are formed in the side wall of the.)

The utility model provides an kind elevating gear for desk, including main desktop (1), its characterized in that, the end of the perpendicular downward welding cavity bracing piece of bottom surface of main desktop (1) cavity bracing piece (2), side inner wall threaded connection of cavity bracing piece (2) has pinion rack (3), the toothed face docking gear (4) of pinion rack (3), rolling bearing (5) are cup jointed perpendicularly in the center of gear (4), the both ends vertical welding of rolling bearing (5) is at the inside wall of main tributary bracing piece (6), gear (4) are cup jointed in the lateral wall of main tributary bracing piece (6) keeping away from toothed end, gear (4) have crank (7) in the side welding of end side that is close to main tributary bracing piece (6), cavity bracing piece (2) are inlaying a plurality of cylindricality and are detained (8) in the lateral surface that has pinion rack (3) side, the cylindricality is detained and is equipped with spring (9) between cavity bracing piece bottom surface (2), hug the outer wall of the main tributary bracing piece (6) hug pillar (6) hug closely, the inner wall of main tributary bracing piece (10) is equipped with the through-hole (10), the through-hole (10) of main tributary bracing piece (10) are equipped with trapezoidal bracing piece (.

2. The kinds of lifting device for desk as claimed in claim 1, wherein the side of the gear (4) is on the same level with the outer side of the main support column (6) at .

3. lifting device for desks as claimed in claim 1 characterized in that the crank (7) is perpendicular to the end side of the gear (4).

4. The kinds of lifting device for desk as claimed in claim 1, wherein the two sides of the sliding piece (11) snap into the internal slots of the through hole (10).

5. kinds of lifting device for desk, according to claim 1, characterized in that, the main supporting pole (6) is a square column and the hollow supporting pole (2) is also a square column.

6. lifting device for desks in accordance with claim 1, characterized in that the main desk top (1) is a round desk top.

7. kinds of lifting device for desks as claimed in claim 1, characterized in that, the hollow supporting bar (2) is short on three sides and the toothed plate (4) is long on sides.

8. lifting device for desks as claimed in claim 1, characterized in that the crank (7) is concealable and is screwed with a pull ring (13) far from end of the gear (3).

Technical Field

The invention relates to the technical field of teaching lifting tables, in particular to a lifting device for types of desks.

Background

Desk chair, english is desk and chair, be exactly the desk chair of student's usefulness of having a lesson, kinds of desk chair, also called student's desk chair, school's desk chair, desk chair can be divided according to age, materials, the function, can't carry out the regulation of height to traditional desk, it is kinds inconvenient to changeable environment, or the lift table of the buckle formula that appears afterwards again, the buckle that utilizes four corners carries out the lifting, the phenomenon of inclining will appear and will many people concurrent operation in asynchronism, great increase is troublesome, this kind of teaching lift table need not to move vigorously, the interlock between the utilization gear carries out the lifting, simple and convenient also high-efficient swift simultaneously.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides lifting devices for desks.

In order to achieve the purpose, the invention adopts the following technical scheme:

elevating gear for desk, including the main desktop, its characterized in that, the end of the perpendicular downward welding cavity bracing piece in bottom surface of main desktop, side inner wall threaded connection of cavity bracing piece has the pinion rack, the toothed face docking gear that has of pinion rack, rolling bearing is cup jointed perpendicularly in the center of gear, rolling bearing's both ends are welded at the inside wall of main tributary dagger perpendicularly, the gear cup joints in the lateral wall of main tributary dagger keeping away from toothed end, the gear has the crank at end side edge welding that is close to the main tributary dagger, a plurality of cylindricality buttons are inlayed at the lateral surface that has pinion rack side to the cavity bracing piece, be equipped with the spring between cylindricality button and the cavity bracing piece, the inner wall of main tributary dagger is hugged closely to the outer wall of cavity bracing piece, the lateral wall of main tributary dagger is equipped with a plurality of through-holes, the inside of through-hole is equipped with the.

, the handle is perpendicular to the end side of the gear.

And , the two sides of the sliding sheet are clamped in the inner clamping grooves of the through holes.

, the main supporting pole is a square column and the hollow supporting pole is also a square column.

, the main desktop is a circular desktop.

, the hollow support rods are short on all three sides and the toothed plate is long.

, the handle is hidden and a pull ring is screwed on the end far away from the gear.

Compared with the prior art, the invention has the beneficial effects that: through the manual pull-out to the crank, carry out the circumference to the crank and wave, realize that the internal gear carries out the interlock on the pinion rack, thereby make cavity bracing piece upwards or move downwards under the effect of reaction force, reach the effect to the lifting of desktop and reduction, when carrying out the up-and-down motion under the motion of pinion rack interlock through the cavity bracing piece, the outer wall cylindricality of cavity bracing piece is detained when contacting suitable through-hole, the effect of the spring through the rear end makes the cylindricality detain to bounce out inside the through-hole of buckle at the main tributary strut, thereby reach fixed effect, through the fixed of buckle with break away from make the lift that the desktop can be stable, need not many people's operation at the in-process to the desktop lift, need not hard to go the transport desktop and cause the trouble, save trouble labour saving and time saving and efficient swift.

The parts which are not related in the device are the same as or can be realized by adopting the prior art, the internal gear is meshed on the toothed plate by manually pulling out the crank and circularly shaking the crank, so that the hollow support rod moves upwards or downwards under the action of a reaction force, and the effect of lifting and lowering the table top is achieved.

Drawings

Fig. 1 is a schematic front view of kinds of lifting devices for desks in the invention.

Fig. 2 is a schematic side view of kinds of lifting devices for desks in the invention.

Fig. 3 is a schematic view of a fastening structure of lifting devices for desks in the invention.

In the figure: the device comprises a main table top 1, a hollow supporting rod 2, a toothed plate 3, a gear 4, a rotary bearing 5, a main supporting column 6, a crank 7, a cylindrical buckle 8, a spring 9, a through hole 10, a sliding sheet 11, a trapezoidal supporting plate 12 and a pull ring 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only partial embodiments of of the present invention, rather than all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-3, kinds of lifting devices for desks include a main desk top 1, the bottom surface of the main desk top 1 is perpendicularly welded to the end of a hollow support rod 2, the side inner wall of the hollow support rod 2 is in threaded connection with a toothed plate 3, the toothed plate 3 is in face-to-face engagement with a gear 4 with teeth , the center of the gear 4 is perpendicularly sleeved with a rotating bearing 5, two ends of the rotating bearing 5 are perpendicularly welded to the inner side wall of the main support column 6, the gear 4 is sleeved to the side wall of the main support column 6 at the end end far away from the teeth, the gear 4 is welded to the side wall of the main support column 6 at the side end side edge close to the main support column 6 with a crank 7, the hollow support rod 2 is inlaid with a plurality of cylindrical buckles 8 on the outer side of the toothed plate 3 , a spring 9 is arranged between the cylindrical buckles 8 and the hollow support rod 2, the outer wall of the hollow support rod 2 is tightly attached to the inner wall of the main support column 6, the side wall of the main support column 6 is provided.

The side surface of the gear 4 and the outer side surface of the main supporting column 6 are on the same horizontal plane.

The crank 7 is perpendicular to the end side of the gear 4.

The two sides of the sliding sheet 11 are clamped in the inner clamping grooves of the through holes 10.

The main support column 6 is a square cylinder and the hollow support rod 2 is also a square cylinder.

The main desktop 1 is a circular desktop.

The hollow support bar 2 is short on all three sides and the toothed plate 4 is long on the side.

The crank 7 is hidden and is far away from the end of the gear 3 and is in threaded connection with a pull ring 1

Through pulling out the manual of crank 7, carrying out the circumference to crank 7 and rocking, realize that inside wheel carries out the interlock on pinion rack 3 to make cavity bracing piece 2 upwards or move downwards under the effect of reaction force, reach the lifting and the effect that reduces desktop 1.

When the hollow support rod 2 moves up and down under the movement of the toothed plate 3 in an engaged manner, the outer wall cylindrical buckle 8 of the hollow support rod 2 contacts a proper through hole, the cylindrical buckle 8 is ejected out of the through hole 10 of the main support column 6 under the action of the spring 9 at the rear end, and therefore the fixing effect is achieved.

The desktop can be stably lifted by fixing and separating the buckle, so that the operation of multiple people is not needed in the process of lifting the desktop, the trouble caused by carrying the desktop without wasting effort is avoided, and the device is trouble-saving, time-saving, labor-saving, efficient and quick.

The working process of the invention is as follows: pull out the manual of crank 7, carry out the circumference to crank 7 and wave, realize that the inside wheel carries out the interlock on pinion rack 3, thereby make cavity bracing piece 2 upwards or move downwards under the effect of reaction force, reach the effect to the lifting of desktop 1 and reduction, cavity bracing piece 2 carries out the up-and-down motion under the motion of pinion rack 3 interlock when, the outer wall cylindricality of cavity bracing piece 2 is detained 8 when contacting suitable through-hole, the effect of the spring 9 of rear end makes the cylindricality detain 8 and is popped out inside through-hole 10 of buckle at main tributary strut 6, thereby reach fixed effect, the fixed lift that makes the desktop can be stable with breaking away from of buckle, need not many people's operation at the in-process to the desktop lift, need not hard to go to carry the desktop and cause trouble.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.