CN111022485A - Hand-rotating linear actuator - Google Patents
Hand-rotating linear actuator Download PDFInfo
- Publication number
- CN111022485A CN111022485A CN201911258534.3A CN201911258534A CN111022485A CN 111022485 A CN111022485 A CN 111022485A CN 201911258534 A CN201911258534 A CN 201911258534A CN 111022485 A CN111022485 A CN 111022485A
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- China
- Prior art keywords
- bearing
- supporting seat
- hand
- linear actuator
- inner tube
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a hand-rotating linear actuator, which comprises a machine shell, an outer pipe fixed on the machine shell and an inner pipe sleeved in the outer pipe, wherein the inner pipe rotates or stretches in the outer pipe, a supporting seat is arranged at the end part of the outer pipe, a supporting component fixed on the supporting seat is arranged between the supporting seat and the inner pipe, the supporting component comprises at least one bearing, and the bearing is sleeved on the inner pipe.
Description
Technical Field
The invention belongs to the field of linear actuators, and particularly relates to a hand-rotating linear actuator.
Background
At present, the extensive each field of being applied to of hand-rotating linear actuator, current hand-rotating linear actuator also carries out radial positioning to the inner tube when carrying out the axial direction to the inner tube through the supporting seat, hand-rotating linear actuator's inner tube is at the in-process that promotes the object, the inner tube can receive the effect of radial force, when the radial force that the inner tube received is too big, the inner tube compresses tightly the supporting seat under the effect of radial force, when needing to rotate the inner tube with the hand, because frictional force is too big between inner tube and the supporting seat, make the inner tube unable rotate in order to retract to the outer tube, use experience is poor.
Disclosure of Invention
The invention aims to provide a hand-rotating linear actuator which is convenient for manually rotating an inner pipe.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a hand-operated linear actuator, includes the casing, fixes the outer tube on the casing and cup joints the inner tube in the outer tube, and the inner tube is rotatory or flexible in the outer tube, and the tip of outer tube is equipped with the supporting seat, is equipped with the supporting component who fixes on the supporting seat between supporting seat and the inner tube, and the supporting component includes at least one bearing, and the bearing cup joints on the inner tube.
Further, the support assembly further comprises a support sleeve arranged between the inner pipe and the bearing.
Furthermore, the support sleeve and the inner ring of the bearing are of an integrated structure; or the support sleeve is detachably connected with the inner ring of the bearing.
Furthermore, the supporting component comprises a plurality of bearings, and a limiting ring fixed on the supporting sleeve is arranged between the inner rings of two adjacent bearings.
Furthermore, a spacing lantern ring is arranged between the outer rings of two adjacent bearings.
Furthermore, a slot is arranged on the supporting seat, and the end part of the outer tube is inserted into the slot.
Further, the supporting seat is fixed on the outer pipe through a locking piece; or the supporting seat is in threaded connection with the outer pipe.
Furthermore, the supporting seat is provided with a limiting groove for mounting the bearing, and a hole clamp spring for fixing the bearing in the limiting groove is arranged in the limiting groove.
Furthermore, one end of the supporting seat is provided with a sealing groove facing the inner pipe, a sealing ring is arranged in the sealing groove, and the sealing ring is abutted against the inner pipe to prevent liquid from entering the limiting groove.
Compared with the prior art, the invention has the beneficial effects that:
1. carry out radial positioning and axial direction to the inner tube through supporting component, the bearing cup joints on the inner tube, even when the radial force that the inner tube received is too big, inner tube extrusion bearing can not influence the relative rotation between bearing inner circle and the bearing inner race yet, and the radial force that the inner tube received can not cause the influence to the rotation of inner tube promptly, and then the user can easily rotate the inner tube in order to withdraw the outer tube with the inner tube when having a power failure in, realizes the decline of the structure that links to each other with the inner tube, and it is more laborsaving convenient to use.
2. The inner tube is through supporting cover extrusion bearing under the effect of radial force, when the inner tube rotated, the inner tube, the inner circle of bearing housing and bearing took place jointly and rotates, the bearing housing has increased the area of contact between inner tube and the bearing inner circle, the laminating effect between bearing inner circle and the inner tube outer wall has also been strengthened, make the interlock effect between inner tube and the bearing inner circle better, prevent to take place between bearing inner circle and the inner tube relative rotation with the outer wall of wearing and tearing inner tube and the inner circle of bearing, the life of extension inner tube and bearing.
3. The support sleeve can be integrated with the inner ring of the bearing and can be detachably connected with the inner ring of the bearing, and in the embodiment, the support sleeve and the inner ring of the bearing are preferably detachably connected, so that the support sleeve and the bearing can be maintained and replaced independently, and the maintenance difficulty and the maintenance cost are reduced.
4. When the supporting component comprises a plurality of bearings, the supporting sleeve is provided with a limiting ring protruding towards the space between two adjacent bearings, the limiting ring abuts against the side walls of the inner rings of the two bearings respectively, the limiting ring and the supporting sleeve are integrally arranged, the bearings are used for limiting the supporting sleeve in the axial direction through the limiting ring, and the supporting sleeve is prevented from moving in the axial direction relative to the bearings.
5. And a spacer ring is arranged between the outer rings of the two adjacent bearings and separates the two adjacent bearings, so that the distance between the inner ring and the outer ring of the two adjacent bearings is kept consistent.
6. Be equipped with the slot on the supporting seat, the tip of outer tube is pegged graft in the slot for on the outer tube was installed to the supporting seat, when supporting the inner tube, the tip of protection outer tube.
7. The supporting seat can be fixed on the outer tube through the retaining member, and the supporting seat also can set up the screw thread in the slot, through screw thread outer tube threaded connection to realize firm fixed between supporting seat and the outer tube, be convenient for simultaneously the installation and the dismantlement between supporting seat and the outer tube, be convenient for maintain and change.
8. The limiting groove and the hole clamp spring are used for limiting two ends of the bearing in the limiting groove respectively, the bearing is prevented from moving along the axial direction of the outer pipe, and the supporting assembly is guaranteed to stably support the inner pipe.
Compared with the prior art, the inner pipe is radially positioned and axially guided through the supporting assembly, so that the rotation of the inner pipe cannot be influenced by the radial force applied to the inner pipe, a user can easily rotate the inner pipe to retract the inner pipe into the outer pipe when power is off, the descending of a structure connected with the inner pipe is realized, and the use is more labor-saving and convenient.
Drawings
The invention is further described with reference to the accompanying drawings and the detailed description below:
FIG. 1 is a schematic diagram of a hand-rotated linear actuator according to the present invention;
fig. 2 is an enlarged view of a portion a of fig. 1.
Wherein: 1. a housing; 2. an outer tube; 3. an inner tube; 4. a supporting seat; 41. a slot; 42. a limiting groove; 43. a sealing groove; 5. a support assembly; 51. a bearing; 52. a support sleeve; 521. a limiting ring; 6. a spacer ring; 7. a clamp spring for the hole; 8. and (5) sealing rings.
Detailed Description
The utility model provides a hand-operated linear actuator, includes the casing, fixes the outer tube on the casing and cup joints the inner tube in the outer tube, and the inner tube is rotatory or flexible in the outer tube, and the tip of outer tube is equipped with the supporting seat, is equipped with the supporting component who fixes on the supporting seat between supporting seat and the inner tube, and the supporting component includes at least one bearing, and the bearing cup joints on the inner tube. According to the invention, the inner pipe is radially positioned and axially guided by the supporting assembly, so that the rotation of the inner pipe cannot be influenced by the radial force applied to the inner pipe, a user can easily rotate the inner pipe to retract the inner pipe into the outer pipe when power is off, the descending of a structure connected with the inner pipe is realized, and the use is more labor-saving and convenient.
The first embodiment is as follows:
a hand-rotating linear actuator is disclosed, as shown in fig. 1 and fig. 2, comprising a casing 1, an outer tube 2 fixed on the casing 1 and an inner tube 3 sleeved in the outer tube 2, wherein the inner tube 3 extends and retracts along the axial direction of the outer tube 2 to push the structure connected with the inner tube 3 to ascend or pull the structure connected with the inner tube 3 to descend, when the inner tube 3 can not retract into the outer tube 2 due to power failure, the inner tube 3 of the hand-rotating linear actuator can be manually rotated to enable the inner tube 3 to retract into the outer tube 2 along the axial direction of the outer tube 2. The tip of outer tube 2 is equipped with the supporting seat 4 that supplies inner tube 3 to pass, is equipped with supporting component 5 between supporting seat 4 and the inner tube 3, and supporting component 5 fixes on supporting seat 4, and supporting component 5 includes at least one bearing 51, and bearing 51 cup joints on inner tube 3.
Present hand formula linear actuator also carries out radial positioning to inner tube 3 when carrying out the axial direction to inner tube 3 through supporting seat 4, hand formula linear actuator's inner tube 3 is promoting the in-process that needs the structure that goes up and down, inner tube 3 can receive the effect of radial force, when the radial force that inner tube 3 received is too big, inner tube 3 compresses tightly supporting seat 4 under the effect of radial force, when needing to rotate inner tube 3 with the hand, because frictional force is too big between inner tube 3 and the supporting seat 4, make in inner tube 3 can't rotate in order to retract to outer tube 2, use experience is poor.
According to the invention, the inner tube 3 is radially positioned and axially guided by the supporting component 5, the bearing 51 is sleeved on the inner tube 3, even if the radial force applied to the inner tube 3 is too large, the inner tube 3 extrudes the bearing 51, the relative rotation between the inner ring of the bearing 51 and the outer ring of the bearing 51 is not influenced, namely, the radial force applied to the inner tube 3 does not influence the rotation of the inner tube 3, so that a user can easily rotate the inner tube 3 to retract the inner tube 3 into the outer tube 2 during power failure, the descending of a structure connected with the inner tube 3 is realized, and the use is more labor-saving and convenient.
In this embodiment, the support assembly 5 further includes a support sleeve 52 disposed between the inner tube 3 and the bearing 51, the inner tube 3 presses the bearing 51 through the support sleeve 52 under the action of the radial force, when the inner tube 3 rotates, the inner tube 3, the inner rings of the bearing 51 sleeve and the bearing 51 rotate together, the bearing 51 sleeve increases the contact area between the inner tube 3 and the inner ring of the bearing 51, and the attaching effect between the inner ring of the bearing 51 and the outer wall of the inner tube 3 is also enhanced, so that the linking effect between the inner tube 3 and the inner ring of the bearing 51 is better, the outer wall of the inner tube 3 and the inner ring of the bearing 51 are prevented from being worn by relative rotation between the inner ring of the bearing 51 and the inner tube 3, and the service.
The bearing 51 in this embodiment may be provided with one or more (two or more), the bearing 51 may be a radial bearing, a thrust bearing and/or a radial thrust bearing, and preferably the bearing 51 is provided with a plurality of, a combination of a radial bearing and a thrust bearing, or, a radial bearing, a thrust bearing and a radial thrust bearing are combined, the radial bearing bears larger radial force and smaller axial force, meanwhile, the thrust bearing bears larger axial force and smaller radial force, and the combination of the radial bearing and the thrust bearing can simultaneously ensure the radial positioning and the axial guiding effect of the bearing 51 on the inner pipe 3, because the radial thrust bearing can simultaneously bear the radial force and the axial force, the combination of radial and thrust bearings also ensures the radial positioning and axial guiding effect of the bearing 51 with respect to the inner tube 3.
The support sleeve 52 may be integrated with the inner ring of the bearing 51, or may be detachably connected with the inner ring of the bearing 51, and in this embodiment, it is preferable that the support sleeve 52 and the inner ring of the bearing 51 are detachably connected, so that the support sleeve 52 and the bearing 51 can be maintained and replaced separately, and the maintenance difficulty and cost are reduced. When the support assembly 5 includes a plurality of bearings 51, the support sleeve 52 is provided with a limiting ring 521 protruding toward between two adjacent bearings 51, the limiting ring 521 abuts against the inner ring side walls of the two bearings 51, the limiting ring 521 is integrally provided with the support sleeve 52, and the bearings 51 axially limit the support sleeve 52 through the limiting ring 521, so as to prevent the support sleeve 52 from axially moving relative to the bearings 51. A spacer ring 6 is arranged between the outer rings of two adjacent bearings 51, and the spacer ring 6 separates the two adjacent bearings 51, so that the distance between the inner ring and the outer ring of the two adjacent bearings 51 is kept consistent.
Be equipped with slot 41 on the supporting seat 4 in this embodiment, the slot 41 is pegged graft to the tip of outer tube 2 in, make supporting seat 4 install on outer tube 2, supporting seat 4 can be fixed on outer tube 2 through the retaining member (for example, run through the screw isotructure of outer tube 2 and supporting seat 4), supporting seat 4 also can set up the screw thread in slot 41, through 2 threaded connection of screw thread outer tube, in order to realize firm fixed between supporting seat 4 and the outer tube 2, be convenient for simultaneously supporting seat 4 and the installation and the dismantlement between the outer tube 2, be convenient for maintain and change.
In this embodiment, the part of the supporting seat 4 located in the outer tube 2 is provided with the limiting groove 42 for installing the bearing 51, after all the bearings 51 are installed in the limiting groove 42, the hole-used snap spring 7 for fixing all the bearings 51 in the limiting groove 42 is arranged in the limiting groove 42, the hole-used snap spring 7 is partially arranged in the annular groove formed in the inner wall of the limiting groove 42, one end of the bearing 51 closest to the bottom of the limiting groove 42 is abutted against the bottom of the limiting groove 42, and the other end of the bearing is abutted against the side wall of the hole-used snap spring 7, so that the installation and the disassembly are easy while the position is firmly limited.
In this embodiment, the one end of supporting seat 4 is equipped with the seal groove 43 towards inner tube 3, is equipped with sealing washer 8 in the seal groove 43, has certain clearance between supporting seat 4 and the inner tube 3 to prevent supporting seat 4 wearing and tearing inner tube 3, inner tube 3 is through offseting with sealing washer 8 in order to prevent that liquid from getting into spacing groove 42 through the clearance, guarantees the leakproofness between inner tube 3 and the outer tube 2.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (9)
1. A hand-rotating linear actuator, comprising a casing, an outer tube fixed on the casing, and an inner tube sleeved in the outer tube, wherein the inner tube rotates or extends in the outer tube, characterized in that: the end of the outer pipe is provided with a supporting seat, a supporting component fixed on the supporting seat is arranged between the supporting seat and the inner pipe, the supporting component comprises at least one bearing, and the bearing is sleeved on the inner pipe.
2. A hand-rotated linear actuator as claimed in claim 1, wherein: the support assembly further comprises a support sleeve disposed between the inner tube and the bearing.
3. A hand-rotated linear actuator as claimed in claim 2, wherein: the support sleeve and the inner ring of the bearing are of an integral structure; or the support sleeve is detachably connected with the inner ring of the bearing.
4. A hand-rotated linear actuator as claimed in claim 2, wherein: the supporting component comprises a plurality of bearings, and a limiting ring fixed on the supporting sleeve is arranged between the inner rings of two adjacent bearings.
5. A hand-rotated linear actuator as claimed in claim 4, wherein: and a spacing lantern ring is arranged between the outer rings of two adjacent bearings.
6. A hand-rotated linear actuator as claimed in any one of claims 1 to 5, wherein: the supporting seat is provided with a slot, and the end part of the outer tube is inserted into the slot.
7. A hand-rotated linear actuator as claimed in claim 6, wherein: the supporting seat is fixed on the outer tube through a locking piece; or, the supporting seat is in threaded connection with the outer pipe.
8. A hand-rotated linear actuator as claimed in claim 7, wherein: the supporting seat is provided with a limiting groove for mounting the bearing, and a hole clamp spring for fixing the bearing in the limiting groove is arranged in the limiting groove.
9. A hand-rotated linear actuator as claimed in claim 8, wherein: one end of the supporting seat is provided with a sealing groove facing the inner pipe, a sealing ring is arranged in the sealing groove, and the sealing ring is abutted against the inner pipe to prevent liquid from entering the limiting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911258534.3A CN111022485A (en) | 2019-12-10 | 2019-12-10 | Hand-rotating linear actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911258534.3A CN111022485A (en) | 2019-12-10 | 2019-12-10 | Hand-rotating linear actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111022485A true CN111022485A (en) | 2020-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911258534.3A Pending CN111022485A (en) | 2019-12-10 | 2019-12-10 | Hand-rotating linear actuator |
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| Country | Link |
|---|---|
| CN (1) | CN111022485A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024066777A1 (en) * | 2022-09-26 | 2024-04-04 | 德沃康科技集团有限公司 | Linear driver with hand-cranking function |
-
2019
- 2019-12-10 CN CN201911258534.3A patent/CN111022485A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024066777A1 (en) * | 2022-09-26 | 2024-04-04 | 德沃康科技集团有限公司 | Linear driver with hand-cranking function |
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