CN217609962U - Three-leg hand-operated lifting table - Google Patents

Abstract

The application discloses hand lift table of three legs belongs to desk design technical field for a convenient operation's hand lift table is provided, including desktop and base, be provided with elevating system and stabilizing mean between desktop and the base, elevating system is located between bilateral symmetry's the stabilizing mean, and elevating system realizes the lift adjustment to the desktop through hand mode. The utility model can ensure the stability of the lifting of the table top even if only one power source is used by matching the two stabilizing mechanisms with the middle lifting mechanism, and on the other hand, the hand-operated lifting operation can be easily handled under the condition of high load by utilizing the characteristic of high transmission ratio of the spiral lifting structure; through the limit structure who can take out and insert for the crank design, remove limit state when needs are adjusted, lock when need not adjusting, made things convenient for the operation of hand regulation desktop height, under lower use cost condition, had more convenient operation and experienced.

Description

Three-leg hand-operated lifting table

Technical Field

The application relates to the technical field of table design, in particular to a three-leg hand-operated lifting table.

Background

At present, a common table with a lifting function is basically provided with an electric lifting mechanism, the lifting table is more convenient to use, but the same purchasing cost is higher, on the other hand, the electric lifting control table has an upper limit on the weight capable of bearing, when the lifting control table is subjected to lifting operation beyond the upper limit of the load, the motor is easily damaged, the motor is damaged a little, and the subsequent maintenance cost is also high.

Therefore, a new manual lifting table is needed.

Disclosure of Invention

An object of this application is to provide a convenient operation's hand lift table.

In order to achieve the above purposes, the application provides a three-leg hand-operated lifting table: including desktop and base, be provided with elevating system and stabilizing mean between desktop and the base, elevating system is located bilateral symmetry between the stabilizing mean for let the desktop can both keep steady when stewing and lift adjustment, elevating system realizes right through hand mode the lift adjustment of desktop.

As a preferred, elevating system includes crank, fixture block, configuration piece, fixed block, driving gear, driven gear, sleeve pipe and screw rod, fixture block, configuration piece and fixed block fixed connection be in the bottom surface of desktop, the spacing groove has been seted up on the fixture block, the spacing groove is suitable for the restriction the crank rotates, the configuration piece rotates through changeing the hole and connects the driving gear, the through spline hole has been seted up to the terminal surface of driving gear, the perforating hole has been seted up on the fixed block, the main part of crank divide into the integral key shaft, the integral key shaft passes in proper order behind spacing groove, spline hole and the perforating hole at tip fixed connection retaining ring, through rocking arm swing joint there is the handle at the other end, the lower extreme fixedly connected with optical axis of fixed block, driven gear with behind the bushing with the optical axis constitutes the revolute pair, the screw rod has seted up and has accomodate the chamber, the optical axis is suitable for inserting accomodate in the chamber and constitute the pair that slides with the screw rod, sheathed tube lower extreme fixedly connected with lifting nut, lifting nut's internal thread with the external screw thread fit of screw rod, the driving gear with driven gear meshing constitutes elevating system has the drive mechanism of higher bearing capacity.

Preferably, the side fixedly connected with spacing ring of optical axis, driven gear sets up the shaft hole that the terminal surface link up, the optical axis passes the shaft hole with driven gear rotates to be connected, driven gear subtend the first snap ring of sheathed tube one end fixedly connected with, the sleeve pipe subtend driven gear's one end fixedly connected with second snap ring, fixed connection between first snap ring and the second snap ring to constitute annular spout at relative terminal surface, the spacing ring is located constitute the revolute pair in the annular spout, transmit thrust when spacing.

Preferably, a limit slider is arranged on the side face, close to the lower end, of the optical axis, a limit chute is formed in the inner wall of the containing cavity of the screw rod, the limit slider and the limit chute are matched to form a sliding pair, and therefore structural stability of the lifting mechanism is further improved.

Preferably, the upper end of the screw is fixedly connected with a shaft sleeve, the shaft sleeve is fixedly connected with the screw through a bolt, the limiting chute extends to the inner wall of the shaft sleeve, and the lower end of the screw is fixedly connected with the base through a first foot part, so as to keep the whole lifting mechanism in a relatively stable position.

As a preferred, stabilizing mean has two, two stabilizing mean distributes symmetrically elevating system's both sides, stabilizing mean includes spacing post, uide bushing, crossbeam and second foot, crossbeam fixed connection is in the bottom surface of desktop, the uide bushing with crossbeam fixed connection, the guide way has been seted up to the uide bushing, the uide bushing pass through the guide way with spacing post swing joint, spacing post passes through second foot and base fixed connection for spacing post and uide bushing are in on the same vertical direction all the time.

Preferably, the guide sleeve is provided with a guide sliding groove, the guide sliding groove is communicated with the guide groove, a guide sliding block is fixedly connected to the position of the limit column close to the upper end, and the guide sliding block is suitable for being embedded into the guide sliding groove and forming a sliding pair for keeping the stability of the stabilizing mechanism and reducing the side inclination to increase the friction in the lifting adjusting process.

Preferably, the driving gear and the driven gear are bevel gears with a cone angle of 45 degrees, the axis of the driving gear is horizontal, and the axis of the driven gear is vertical, so that the lifting direction adapts to the hand-cranking operation habit of an operator.

Compared with the prior art, the beneficial effect of this application lies in:

(1) By configuring two stabilizing mechanisms to be matched with the middle lifting mechanism, the lifting stability of the table top can be ensured even if only one power source is used, and on the other hand, the hand-cranking lifting operation can be easily coped with under the condition of high load by utilizing the characteristic of high transmission ratio of a spiral lifting structure;

(2) Through the limit structure who can take out and insert for the crank design, remove limit state when needs are adjusted, locking when need not adjust has made things convenient for the operation of hand regulation desktop height, under lower use cost condition, has had more convenient operation and has experienced, and can bear bigger weight and need not consider the problem that the motor burns out, has reduced the product and has used the worry.

Drawings

FIG. 1 is a schematic view of the overall structure of the three-leg hand-operated lifting table;

FIG. 2 is a perspective cross-sectional view of the stabilizing mechanism of the three-legged hand-operated elevating table;

FIG. 3 is an enlarged view of a portion A of the three-legged hand-operated lifting table shown in FIG. 2;

FIG. 4 is a perspective view of the lifting mechanism of the three-leg hand-operated lifting table;

FIG. 5 is a perspective cross-sectional view of the restraint structure of the lifting mechanism of the three-legged hand-operated lifting table;

FIG. 6 is a partial enlarged view of the table at B of FIG. 5;

FIG. 7 is an enlarged view of a portion of the three-legged hand-operated lifting table at the location C of FIG. 5;

FIG. 8 is a perspective cross-sectional view of the gear assembly of the three-legged hand-operated lift table;

FIG. 9 is a perspective view of the handle of the three-legged hand-operated elevating table;

FIG. 10 is a perspective cross-sectional view of the three-legged hand-operated elevating table after the sleeve is connected with the driven gear;

FIG. 11 is an enlarged view of a portion of the three-legged hand-operated lifting table at D of FIG. 10;

FIG. 12 is an enlarged view of the three-legged hand-operated lift table at E of FIG. 10;

FIG. 13 is a sectional view of the three-leg hand-operated elevating table with a screw rod;

fig. 14 is a partial enlarged view of the three-legged hand-operated elevating table at the point F of fig. 13.

In the figure: 1. a lifting mechanism; 110. a crank; 111. a spline shaft; 112. a rocker arm; 113. a handle; 114. a baffle ring; 120. A clamping block; 121. a limiting groove; 130. a configuration block; 131. hole rotation; 140. a fixed block; 141. a through hole; 142. an optical axis; 143. a limiting ring; 144. a limiting slide block; 150. a driving gear; 151. a spline hole; 160. a driven gear; 161. a shaft hole; 162. a first snap ring; 170. a sleeve; 171. a second snap ring; 172. a lifting nut; 67. an annular chute; 180. a screw; 181. a receiving cavity; 182. a shaft sleeve; 183. a limiting chute; 184. a first foot section; 2. a stabilizing mechanism; 210. a limiting column; 211. a guide slider; 220. a guide sleeve; 221. a guide groove; 222. a guide chute; 203. a cross beam; 204. a second foot section; 3. A desktop; 4. a base.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.

It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

As shown in fig. 1-14, the three-leg hand-operated lifting table includes a table top 3 and a base 4, a lifting mechanism 1 and two stabilizing mechanisms 2 are disposed between the table top 3 and the base 4, the lifting mechanism 1 is disposed between the bilaterally symmetric stabilizing mechanisms 2, the two stabilizing mechanisms 2 are symmetrically disposed on two sides of the lifting mechanism 1 to keep the table top 3 stable, and the stabilizing mechanisms 2 are symmetrically arranged to keep synchronization when the lifting mechanism 1 adjusts the height, thereby avoiding the problem of increased friction force caused by offset, the stabilizing mechanism 2 includes a limit post 210, a guide sleeve 220, a cross beam 203 and a second foot 204, the cross beam 203 is fixedly connected to the bottom surface of the table top 3, the guide sleeve 220 is fixedly connected to the cross beam 203, the guide sleeve 220 is provided with a guide slot 221, the guide sleeve 220 is movably connected to the limit post 210 through the guide slot 221, the limit post 210 can move telescopically relative to the guide sleeve 220, the limit post 210 is fixedly connected to the base 4 through the second foot 204, thus the guide sleeve 220 and the limit post 210 can keep in the same vertical direction, the guide slot 221 can be inserted into the guide slot 222, and the guide slot 222 is suitable for improving the stability of the guide sleeve 220 when the guide sleeve 220 and the guide slot 222 is inserted into the guide slot 211.

The lifting mechanism 1 realizes lifting adjustment of the tabletop 3 in a hand-cranking mode, the lifting mechanism 1 comprises a crank 110, a fixture block 120, a configuration block 130, a fixing block 140, a driving gear 150, a driven gear 160, a sleeve 170 and a screw 180, the fixture block 120, the configuration block 130 and the fixing block 140 are fixedly connected to the bottom surface of the tabletop 3 and used for limiting the positions of parts matched with the fixture block, a limiting groove 121 is formed in the fixture block 120 and is suitable for limiting rotation of the crank 110, the configuration block 130 is rotatably connected with the driving gear 150 through a rotating hole 131, a through spline hole 151 is formed in the end surface of the driving gear 150, a through hole 141 is formed in the fixing block 140, the main body part of the crank 110 is a spline shaft 111, the spline shaft 111 sequentially penetrates through the limiting groove 121, the spline hole 151 and the through hole 141 and is fixedly connected with a baffle ring 114 at the end part, the spline shaft 111 is matched with the spline hole 151 of the driving gear 150, so that the spline shaft 111 can slide relative to the driving gear 150 and cannot rotate relative to the driving gear, a degree of freedom of the crank 110 is increased, the crank 110 can be inserted into and extracted relative to the fixture block 120, the handle 113 is movably connected to the other end of the handle 113 through a rocker 112, when adjustment is needed, the adjustment, the handle 113 is realized, and the lifting adjustment, the lifting adjustment can be realized, and the lower end of the fixing block 160 is connected with the driven gear 142, and used for limiting shaft 142; on the other hand, the lifting mechanism is used for limiting the maximum lifting height of the tabletop 3 and preventing the lifting mechanism 1 from being disassembled, the driven gear 160 is connected with the sleeve 170 and then forms a rotating pair with the optical axis 142, the screw 180 is provided with a containing cavity 181 for containing the optical axis 142, the optical axis 142 is suitable for being inserted into the containing cavity 181 and forms a sliding pair with the screw 180, the stability during lifting adjustment is improved, the lower end of the sleeve 170 is fixedly connected with a lifting nut 172, the internal thread of the lifting nut 172 is matched with the external thread of the screw 180, and the rotary motion is converted into linear motion by using a spiral structure, so that on one hand, manual adjustment is more labor-saving; on the other hand, the lifting adjustment is smoother and more stable, the driving gear 150 is meshed with the driven gear 160 and is used for transmitting rotary power, the driving gear 150 and the driven gear 160 are bevel gears with 45-degree taper angles, the axis of the driving gear 150 is horizontal, the axis of the driven gear 160 is vertical, the rotation in the vertical direction is converted into the rotation in the horizontal direction, and an adjuster only needs to shake the handle 113 in the horizontal direction beside a table to drive the sleeve 170 to realize the lifting adjustment.

The side of the optical axis 142 is fixedly connected with a limit ring 143, the driven gear 160 is provided with an axial hole 161 with a through end surface, the optical axis 142 passes through the axial hole 161 to be rotatably connected with the driven gear 160, one end of the driven gear 160 opposite to the sleeve 170 is fixedly connected with a first snap ring 162, one end of the sleeve 170 opposite to the driven gear 160 is fixedly connected with a second snap ring 171, the first snap ring 162 and the second snap ring 171 are fixedly connected, and form an annular sliding groove 67 on the opposite end surface, the limit ring 143 is positioned in the annular sliding groove 67 to form a rotating pair, the driven gear 160 and the sleeve 170 can rotate relative to the optical axis 142, meanwhile, the upward thrust can be transmitted to the optical axis 142 through the limit ring 143, and the annular sliding groove 67 can easily store lubricating oil, even under a large pressure, the relative rotation can be smooth, optical axis 142 is provided with limit slide 144 in the side that is close to the lower extreme, screw 180 has seted up limit chute 183 at the inner wall of accomodating chamber 181, limit slide 144 and limit chute 183 cooperation constitute the pair of sliding, further improve lift adjustment's stationarity, screw 180's upper end fixedly connected with axle sleeve 182, axle sleeve 182 passes through bolt and screw 180 fixed connection, limit chute 183 extends to axle sleeve 182's inner wall, but limit chute 183 does not link up axle sleeve 182's terminal surface, so axle sleeve 182 that can dismantle just can make things convenient for optical axis 142 to cartridge in the screw 180, can restrict optical axis 142 and extract from screw 180 again, screw 180's lower extreme is through first foot 184 and 4 fixed connection of base, a stability for keeping whole upgrade mechanism 1 bottom.

This hand lift table of three legs's using-way: because the spiral structure in the lifting mechanism 1 has a self-locking function and the crank 110 for adjusting the height can be locked, when the lifting table needs to be moved and transferred, the upper table top 3 is directly lifted, and the height of the lifting table is not passively changed; after the lifting table is transferred to a place needing to be used, various articles can be placed on the table top 3 after the table is put upright; when the height of the tabletop 3 needs to be adjusted, the rocker arm 112 of the crank 110 is pulled out from the limiting groove 121 of the fixture block 120, that is, the handle 113 can be rotated to adjust the height, because the handle 113 can drive the bevel gear structure through the spline shaft 111 and finally drive the lifting nut 172 at the lower end of the sleeve 170 to perform spiral lifting movement relative to the fixed screw 180, because the transmission ratio of the spiral lifting mechanism is large, the height of the tabletop 3 can be adjusted relatively easily even if a heavy object is placed on the tabletop 3.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims (7)

1. A hand lift table of three legs, its characterized in that: including desktop and base, be provided with elevating system and stabilizing mean between desktop and the base, elevating system is located bilateral symmetry between the stabilizing mean, elevating system realizes right through hand mode the lift adjustment of desktop, elevating system includes crank, fixture block, configuration piece, fixed block, driving gear, driven gear, sleeve pipe and screw rod, fixture block, configuration piece and fixed block fixed connection are in the bottom surface of desktop, the spacing groove has been seted up on the fixture block, the spacing groove is suitable for the restriction the crank rotates, the configuration piece is connected through changeing the hole rotation the driving gear, the through spline hole has been seted up to the terminal surface of driving gear, the perforating hole has been seted up on the fixed block, the main part of crank is divided into the integral key shaft, the integral key shaft passes in proper order behind spacing groove, spline hole and the perforating hole at tip fixed connection retainer ring, there is the handle through rocking arm swing joint at the other end, the lower extreme fixedly connected with optical axis of fixed block, driven gear with after the bushing with the optical axis constitutes the revolute pair, the screw rod has been seted up and has been accomodate the chamber, the optical axis is suitable for inserting in accomodating the chamber and with the screw rod constitutes the sliding pair, the lower extreme fixedly connected with lifting nut, lifting nut and the external screw rod meshes with the driven gear.

2. A three-legged hand-operated lifting table as claimed in claim 1, wherein: the side fixedly connected with spacing ring of optical axis, driven gear sets up the shaft hole that the terminal surface link up, the optical axis passes the shaft hole with driven gear rotates to be connected, driven gear subtend the first snap ring of sheathed tube one end fixedly connected with, sleeve pipe subtend driven gear's one end fixedly connected with second snap ring, fixed connection between first snap ring and the second snap ring to constitute annular spout at relative terminal surface, the spacing ring is located constitute the revolute pair in the annular spout.

3. A three-legged hand-operated lifting table as claimed in claim 2, wherein: the side face of the optical axis close to the lower end is provided with a limiting sliding block, the inner wall of the containing cavity is provided with a limiting sliding groove through the screw, and the limiting sliding block and the limiting sliding groove are matched to form a sliding pair.

4. A three-legged hand-operated lifting table as claimed in claim 3, wherein: the upper end fixedly connected with axle sleeve of screw rod, the axle sleeve pass through the bolt with screw rod fixed connection, spacing spout extends to the inner wall of axle sleeve, the lower extreme of screw rod through first foot with base fixed connection.

5. A three-legged hand-operated lifting table as claimed in claim 1, wherein: stabilizing mean has two, two stabilizing mean distributes symmetrically elevating system's both sides, stabilizing mean includes spacing post, uide bushing, crossbeam and second foot, crossbeam fixed connection is in the bottom surface of desktop, the uide bushing with crossbeam fixed connection, the guide way has been seted up to the uide bushing, the uide bushing pass through the guide way with spacing post swing joint, spacing post passes through second foot and base fixed connection.

6. A hand-operated three-legged lifting table, as in claim 5, wherein: the guide sleeve is provided with a guide chute, the guide chute is communicated with the guide chute, the position of the limiting column close to the upper end is fixedly connected with a guide sliding block, and the guide sliding block is suitable for being embedded into the guide chute and forms a sliding pair.

7. A three-legged hand-operated lifting table as claimed in claim 1, wherein: the driving gear and the driven gear are bevel gears with 45-degree taper angles, and the axis of the driving gear is horizontal and the axis of the driven gear is vertical.

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