CN112398273A - Lifting driving device with one-way brake locking function - Google Patents
Lifting driving device with one-way brake locking function Download PDFInfo
- Publication number
- CN112398273A CN112398273A CN202011398814.7A CN202011398814A CN112398273A CN 112398273 A CN112398273 A CN 112398273A CN 202011398814 A CN202011398814 A CN 202011398814A CN 112398273 A CN112398273 A CN 112398273A
- Authority
- CN
- China
- Prior art keywords
- brake
- transmission shaft
- spring
- driving device
- lifting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 39
- 238000009434 installation Methods 0.000 claims description 2
- 230000008602 contraction Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B13/00—Details of tables or desks
- A47B13/02—Underframes
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B9/00—Tables with tops of variable height
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B2200/00—General construction of tables or desks
- A47B2200/0035—Tables or desks with features relating to adjustability or folding
- A47B2200/005—Leg adjustment
- A47B2200/0056—Leg adjustment with a motor, e.g. an electric motor
Abstract
The invention discloses a lifting driving device with a one-way brake locking function, wherein a transmission shaft (1) is connected with a spiral lifter in a lifting stand column assembly (8), a locking structure is arranged on the transmission shaft, the locking structure comprises a brake seat shell (5) which is arranged on the transmission shaft in a clearance fit manner, a brake seat (7) which is arranged on the transmission shaft in an interference fit manner, and a brake spring (6) which is arranged on the brake seat in an interference fit manner, a mounting groove (51) is arranged in the brake seat shell, the brake seat is arranged in the mounting groove, the brake spring is a spiral spring, the rotation direction of the spiral spring is consistent with the rotation direction of the transmission shaft and the brake seat when the lifting stand column assembly extends, the spiral spring is provided with a first end (61) and a second end (62), the first end is limited by the mounting groove, and the second end is in. The invention can realize the locking when the lifting driving device contracts, so that the lifting driving device can not slide down when bearing a load.
Description
Technical Field
The invention relates to an electric lifting table, in particular to a lifting driving device with a one-way braking and locking function.
Background
The electric lifting table can change the height of the table body so as to meet the individual requirements of people and enable people to work and study in the most comfortable posture.
As shown in chinese patent CN209732949U, the electric lifting table in the market at present generally uses a motor to drive a screw elevator to achieve the lifting function. In order to realize the lifting speed of the electric lifting table, the lifting speed of the electric lifting table is generally realized by shortening a lead screw lead of a spiral lifter in the industry, so that the electric lifting table cannot be stopped under a certain load condition, namely, the lifting structure cannot lock the table top in the process of driving the large-load table top to descend after the electric lifting table bears the load, and the table top slides down.
Disclosure of Invention
The invention aims to solve the technical problem that the electric lifting table cannot be locked under the condition of heavy load and cannot slide downwards, and provides a lifting driving device with a one-way braking and locking function, which can prevent the electric lifting table from sliding downwards when the load is increased.
In order to solve the technical problems, the invention provides a lifting driving device with a one-way brake locking function, which comprises a transmission shaft and a lifting upright post assembly, wherein the transmission shaft is connected with a spiral lifter in the lifting upright post assembly, and the lifting driving device is structurally characterized in that a locking structure is arranged on the transmission shaft, the locking structure comprises a brake seat shell which is arranged on the transmission shaft in a clearance fit manner, a brake seat which is arranged on the transmission shaft in an interference fit manner, and a brake spring which is arranged on the brake seat in an interference fit manner, a mounting groove is arranged in the brake seat shell, the brake seat is arranged in the mounting groove, the brake spring is a spiral spring, the rotation direction of the spiral spring is consistent with the rotation direction of the transmission shaft and the brake seat when the lifting upright post assembly extends, the spiral spring is provided with a first end and a second end, the first end is limited by the mounting groove, the second end is in a free state.
According to the invention, the spiral spring is used as the brake spring, the first end of the brake spring is fixed, the second end is in a free state, and the rotation direction of the brake spring is consistent with the rotation direction of the transmission shaft and the brake seat when the lifting upright post component extends, so that when the lifting upright post component extends (rises), the brake seat rotates along the rotation direction of the brake spring, the inner diameter of the brake spring is enlarged, the friction force between the brake seat and the brake spring is reduced, and the locking structure (the brake spring) cannot influence the extension of the lifting upright post component; when the lifting upright post component contracts, the brake base rotates along the reverse direction of the rotation direction of the brake spring, the inner diameter of the brake spring is reduced, so that the friction force between the brake base and the brake spring is increased, the contraction resistance of the lifting upright post component is increased, and the lifting upright post component can be locked by the locking structure (the brake spring) when contracting (descending).
In order to simplify the structure of the invention, the mounting groove is provided with a limiting groove, and the first end extends into the limiting groove and is limited by the limiting groove.
For the area of contact of increase brake spring and brake seat, make brake spring and brake seat can more closely cooperate, brake spring is the cylindric coil spring that the spring wire coiling that adopts square cross-section formed, just brake spring's inner wall with the surface interference fit of excircle of brake seat.
When the lifting driving device with the one-way braking and locking function is used for an electric lifting table, the lifting driving device further comprises a motor, and an output shaft of the motor is fixedly connected with the transmission shaft.
For the installation that realizes motor and locking structure, fixed mounting support piece on the lift stand subassembly, one side fixed mounting of support piece the motor, support piece's opposite side fixed mounting locking structure, the transmission shaft will motor, support piece, locking structure and lift stand subassembly are established ties and are installed.
In order to ensure that the motor is more stably installed, a fixed gasket is arranged between the motor and the support piece.
Compared with the prior art, the invention has the beneficial effects that:
the invention realizes the one-way brake locking when the lifting upright post component contracts, and avoids the sliding of the lifting upright post component during the load bearing.
Tests prove that when the test product is not added with the structural test load bearing of the invention, the electric lifting table slides downwards under the condition of 80 kg load, and the locking cannot be realized. When the invention is used on the electric lifting table with a single motor, when the same product is used for load test, the locking can be realized under the load of 160 kilograms, and the phenomenon of gliding is avoided.
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 introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an exploded view of components of an embodiment of the lift driving device with a unidirectional braking and locking function according to the present invention.
Fig. 2 is a perspective view of an embodiment of the lift driving device with a unidirectional braking and locking function according to the present invention.
Fig. 3 is a front view structural view of the brake holder with the brake spring installed therein according to the present invention.
Fig. 4 is a perspective view of the brake spring according to the present invention.
Figure 5 is a schematic perspective view of the brake base of the present invention not installed in the brake base housing.
Figure 6 is a schematic perspective view of the brake base of the present invention installed in the brake base housing.
Figure 7 is a schematic front view of the brake base of the invention installed in the brake base shell.
FIG. 8 is a schematic structural diagram of the present invention in use.
In the figure: 1. a drive rod; 2. a motor; 3. fixing a gasket; 4. a support member; 5. a brake base housing; 6. a brake spring; 7. a brake seat; 8. a lifting column assembly; 51. mounting grooves; 511. a limiting groove; 61. a first end; 62. a second end.
Detailed Description
The invention is further described below with reference to specific preferred embodiments, without thereby limiting the scope of protection of the invention.
For convenience of description, the relative positional relationship of the components, such as: the descriptions of the upper, lower, left, right, etc. are described with reference to the layout directions of the drawings in the specification, and do not limit the structure of the present patent.
As shown in fig. 1-8, an embodiment of the lifting driving device with a unidirectional braking and locking function of the present invention includes a transmission shaft 1, a motor 2, a fixing pad 3, a supporting member 4, a brake base housing 5, a brake spring 6, a brake base 7, and a lifting column assembly 8.
The output shaft of the motor 2 is fixedly connected with the transmission shaft 1, and two ends of the transmission shaft 1 are respectively connected with the spiral elevator in a lifting upright post component 8 of the electric lifting table, and the transmission shaft 1 and the spiral elevator are driven by the motor 2 to realize the lifting or descending of the electric lifting table (the part is the prior art, so that too much description is not provided).
The transmission shaft 1 is provided with a locking structure. The locking structure comprises a brake seat shell 5 arranged on the transmission shaft 1 in a clearance fit mode, a brake seat 7 arranged on the transmission shaft 1 in an interference fit mode, and a brake spring 6 arranged on the brake seat 7 in an interference fit mode, wherein the brake spring 6 is arranged on the outer circular surface of the brake seat 7 in an interference fit mode through the inner wall of the brake spring 6, and the brake seat 7 provided with the brake spring 6 is arranged in a mounting groove 51 in the brake seat shell 5. The brake spring 6 is a spiral spring wound by a spring wire, and the rotating direction of the brake spring 6 is consistent with the rotating direction of the transmission shaft 1 and the brake base 7 when the lifting upright post component 8 extends. Brake spring 6 has first end 61 and second end 62, set up spacing groove 511 on the mounting groove 51, brake spring 6's first end 61 stretches into spacing groove 511 and is blocked admittedly by spacing groove 511, make brake spring 6 can be spacing and can not rotate, second end 62 is unrestricted in mounting groove 51, second end 62 is free state promptly, make when brake seat 7 rotates, brake spring 6's internal diameter can enlarge or reduce, the frictional force between brake seat 7 and the brake spring 6 can reduce or increase promptly, and then make the rotating resistance of transmission shaft 1 reduce or increase.
The brake base 7 is preferably made of engineering material with high rigidity, so that the brake base 7 has mechanical characteristics of high wear resistance and high strength. The brake spring 6 preferably adopts the cylindrical helical spring that the spring wire processing of square cross section formed, and the surface of brake spring 6 carries out polishing treatment, and the surface is smooth for the contact surface of brake spring 6 and brake seat 7 is bigger, and the inner wall of brake spring 6 more closely cooperates with the excircle surface of brake seat 7.
When the lifting upright post component is used, the motor 2 drives the transmission shaft 1 to rotate when rotating in the forward direction, the lifting upright post component 8 extends, the transmission shaft 1 drives the brake base 7 to rotate in the forward direction, the rotation direction of the brake spring 6 is consistent with the rotation direction of the transmission shaft 1 and the brake base 7 when the lifting upright post component 8 extends, so that the brake base 7 rotates in the rotation direction of the brake spring 6, at the moment, the first end 61 of the brake spring 6 is clamped by the limiting groove 511 of the brake base shell 5, and the second end 62 is in a free state, so that the inner diameter of the brake spring 6 is enlarged, the friction force between the brake base 7 and the brake spring 6 is reduced, and the extension of the lifting upright post component cannot be influenced by the locking structure (the brake spring 6). When the motor 2 rotates reversely, the motor 2 drives the transmission shaft 1 to rotate reversely, the lifting upright post component 8 contracts, meanwhile, the transmission shaft 1 drives the brake seat 7 to rotate reversely, the brake seat 7 rotates reversely along the rotating direction of the brake spring 6, similarly, because the first end 61 of the brake spring 6 is clamped and fixed by the limiting groove 511 of the brake seat shell 5, the second end 62 is in a free state, the inner diameter of the brake spring 6 is reduced, the friction force between the brake seat 7 and the brake spring 6 is increased, the contraction resistance of the lifting upright post component 8 is increased, and the lifting upright post component 8 is locked by the locking structure (the brake spring 6) after being contracted to a certain length. Obviously, the above description is made by taking the active rotation of the motor 2 as an example, but the present invention is not limited to this, when the motor 2 is not started, the lifting column assembly 8 bears a load, so that the lifting column assembly 8 tends to contract downward, the transmission shaft 1 tends to rotate in a passive reverse direction, the brake base 7 also tends to rotate in a passive reverse direction, and since the rotation direction of the brake spring 6 is consistent with the rotation direction of the transmission shaft 1 and the brake base 7 when the lifting column assembly 8 extends, the inner diameter of the brake spring 6 is reduced, the friction between the brake base 7 and the brake spring 6 is increased, the contraction resistance of the lifting column assembly 8 is increased, that is, the lifting column assembly 8 is locked by the locking structure (the brake spring 6).
The above embodiment is described by taking an electric lifting table as an example, and the lifting column assembly 8 is set to extend when the motor 2 rotates forward, but obviously, the invention is not limited to the above manner, for example, the invention can also be applied to the transmission shaft locking of a non-electric lifting table, and the lifting column assembly 8 can also be set to retract when the motor 2 rotates forward.
The above description is only for the preferred embodiment of the present application and should not be taken as limiting the present application in any way, and although the present application has been disclosed in the preferred embodiment, it is not intended to limit the present application, and those skilled in the art should understand that they can make various changes and modifications within the technical scope of the present application without departing from the scope of the present application, and therefore all the changes and modifications can be made within the technical scope of the present application.
Claims (6)
1. The utility model provides a lift drive with one-way brake locking function, includes transmission shaft (1) and lift stand subassembly (8), the transmission shaft with spiral lift in the lift stand subassembly is connected, its characterized in that, installation locking structure on the transmission shaft, locking structure includes clearance fit installs the epaxial brake seat shell (5) of transmission, interference fit install epaxial brake seat (7), interference fit install brake spring (6) on the brake seat, set up mounting groove (51) in the brake seat shell, the brake seat is installed in the mounting groove, brake spring is coil spring, coil spring revolve to with transmission shaft and brake seat's direction of rotation when lift stand subassembly extends are unanimous, just coil spring has first end (61) and second end (62), the first end is limited by the mounting groove, and the second end is in a free state.
2. The lifting driving device with one-way brake locking function as claimed in claim 1, wherein a limiting groove (511) is disposed on the mounting groove, and the first end extends into the limiting groove and is limited by the limiting groove.
3. The lifting driving device with the one-way brake locking function as claimed in claim 1, wherein the brake spring is a cylindrical coil spring wound by a spring wire with a square cross section, and the inner wall of the brake spring is in interference fit with the outer circular surface of the brake base.
4. The lifting driving device with one-way brake locking function according to any one of claims 1-3, characterized by further comprising a motor (2), wherein an output shaft of the motor is fixedly connected with the transmission shaft.
5. The lifting driving device with one-way brake locking function as claimed in claim 4, wherein a support member (4) is fixedly installed on the lifting column assembly, the motor is fixedly installed on one side of the support member, the locking structure is fixedly installed on the other side of the support member, and the motor, the support member, the locking structure and the lifting column assembly are installed in series by the transmission shaft.
6. The lift driving device with a unidirectional brake locking function as claimed in claim 5, wherein a fixing washer is provided between the motor and the supporting member.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011398814.7A CN112398273A (en) | 2020-12-04 | 2020-12-04 | Lifting driving device with one-way brake locking function |
| PCT/CN2021/129633 WO2022116783A1 (en) | 2020-12-04 | 2021-11-09 | Lifting driving device with one-way braking locking function and lifting table using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011398814.7A CN112398273A (en) | 2020-12-04 | 2020-12-04 | Lifting driving device with one-way brake locking function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112398273A true CN112398273A (en) | 2021-02-23 |
Family
ID=74604110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011398814.7A Pending CN112398273A (en) | 2020-12-04 | 2020-12-04 | Lifting driving device with one-way brake locking function |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112398273A (en) |
| WO (1) | WO2022116783A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022116783A1 (en) * | 2020-12-04 | 2022-06-09 | 南通市久正人体工学股份有限公司 | Lifting driving device with one-way braking locking function and lifting table using same |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202172332U (en) * | 2011-06-03 | 2012-03-21 | 第一传动科技股份有限公司 | Motor having function of speed reduction for actuating device |
| CN102594014A (en) * | 2012-01-19 | 2012-07-18 | 宁波杜亚机电技术有限公司 | Brake device of tubular motor |
| CN103963800A (en) * | 2014-05-19 | 2014-08-06 | 青岛四方车辆研究所有限公司 | Hand brake |
| CN104872994A (en) * | 2015-05-29 | 2015-09-02 | 杭州德昌五金家具有限公司 | Electric lifting device |
| CN110462991A (en) * | 2017-03-14 | 2019-11-15 | 德沃特奥金有限公司 | The electric furniture driving equipment of driving motor with braking device |
| CN209915306U (en) * | 2019-01-24 | 2020-01-10 | 绍兴康拓传动科技有限公司 | Anti-gliding screw rod lifting stand column |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK3244084T3 (en) * | 2016-05-09 | 2021-05-31 | Dellner Brakes Ab | BRAKE DEVICE FOR A ROTARY AXLE OR RUNNING RAIL |
| CN112398273A (en) * | 2020-12-04 | 2021-02-23 | 南通市久正人体工学股份有限公司 | Lifting driving device with one-way brake locking function |
-
2020
- 2020-12-04 CN CN202011398814.7A patent/CN112398273A/en active Pending
-
2021
- 2021-11-09 WO PCT/CN2021/129633 patent/WO2022116783A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202172332U (en) * | 2011-06-03 | 2012-03-21 | 第一传动科技股份有限公司 | Motor having function of speed reduction for actuating device |
| CN102594014A (en) * | 2012-01-19 | 2012-07-18 | 宁波杜亚机电技术有限公司 | Brake device of tubular motor |
| CN103963800A (en) * | 2014-05-19 | 2014-08-06 | 青岛四方车辆研究所有限公司 | Hand brake |
| CN104872994A (en) * | 2015-05-29 | 2015-09-02 | 杭州德昌五金家具有限公司 | Electric lifting device |
| CN110462991A (en) * | 2017-03-14 | 2019-11-15 | 德沃特奥金有限公司 | The electric furniture driving equipment of driving motor with braking device |
| CN209915306U (en) * | 2019-01-24 | 2020-01-10 | 绍兴康拓传动科技有限公司 | Anti-gliding screw rod lifting stand column |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022116783A1 (en) * | 2020-12-04 | 2022-06-09 | 南通市久正人体工学股份有限公司 | Lifting driving device with one-way braking locking function and lifting table using same |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022116783A1 (en) | 2022-06-09 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210223 |
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| RJ01 | Rejection of invention patent application after publication |