CN110762091A - Sequential telescoping mechanism - Google Patents
Sequential telescoping mechanism Download PDFInfo
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- CN110762091A CN110762091A CN201911200363.9A CN201911200363A CN110762091A CN 110762091 A CN110762091 A CN 110762091A CN 201911200363 A CN201911200363 A CN 201911200363A CN 110762091 A CN110762091 A CN 110762091A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 26
- 230000017105 transposition Effects 0.000 claims abstract description 31
- 239000011148 porous material Substances 0.000 claims description 10
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 210000001364 upper extremity Anatomy 0.000 description 1
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Classifications
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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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/10—Telescoping systems
- F16B7/14—Telescoping systems locking in intermediate non-discrete positions
- F16B7/1472—Telescoping systems locking in intermediate non-discrete positions with a clamping screw perpendicular to the axis of the telescoping members
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
Abstract
The invention relates to the technical field of medical equipment, and discloses a sequential telescoping mechanism, which comprises a first moving part, a second moving part, a pull pin, a transposition pin and a self-locking plate, wherein the first moving part is arranged on the first moving part; the second moving part is provided with a first sliding hole along the length direction, the first moving part is arranged in a sliding mode along the length direction of the second moving part, one end of the pull pin is connected with the first moving part, the other end of the pull pin is arranged in the first sliding hole in a sliding mode, the self-locking plate is provided with a second sliding hole along the length direction, one end of the self-locking plate is rotatably arranged on the second moving part, one end of the transposition pin is fixed, and the other end of the transposition pin is arranged in the second sliding hole in a sliding mode, so that the other end of the self-locking plate is matched with the pull pin. The beneficial effects are that: the two moving parts are sequentially stretched, so that the capability of resisting deflection deformation between the moving parts is improved, and the service life of the medical equipment is prolonged.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a sequential telescoping mechanism.
Background
The medical equipment needs to have a telescopic function in order to adapt to patients with different heights or to adapt to different use places. If the stroke of the telescopic mechanism is very large, deflection deformation of the telescopic shaft is reduced by commonly using a plurality of telescopic pipes, and if the telescopic pipes are not sequentially telescopic in the telescopic process, the deflection deformation resistance of the telescopic shaft can be greatly reduced, the service life of medical equipment is influenced, the safety of a patient is seriously threatened, and meanwhile, the user experience is also influenced by randomly telescopic the plurality of telescopic pipes.
At present, there is no telescopic motion mechanism which sequentially extends and retracts in the field of medical equipment. In other fields, each telescopic pipe is generally controlled by a travel switch and a hydraulic cylinder respectively, but the structure is complex, the cost is high, and the unreliability of the product is increased.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides the sequential telescopic mechanism with simple and reasonable structure and low cost.
The purpose of the invention is realized by the following technical scheme: a sequential telescoping mechanism comprises a first moving part, a second moving part, a pull pin, a transposition pin and a self-locking plate; the second moving part is provided with a first sliding hole along the length direction, the first moving part is arranged in a sliding mode along the length direction of the second moving part, one end of the pull pin is connected with the first moving part, the other end of the pull pin is arranged in the first sliding hole in a sliding mode, the self-locking plate is provided with a second sliding hole along the length direction, one end of the self-locking plate is rotatably arranged on the second moving part, one end of the transposition pin is fixed, the other end of the transposition pin is arranged in the second sliding hole in a sliding mode, so that the other end of the self-locking plate is matched with the pull pin, and when the second moving part is in the first state, the transposition pin is located at the top end of the second sliding hole.
Further, the self-locking plate comprises a first convex part, a second convex part and a sliding part; the sliding part is provided with a second sliding hole along the length direction, the first protruding part is positioned at one end of the sliding part, the first protruding part is rotatably arranged on the second moving part, the second protruding part is positioned at the other end of the sliding part, and the second protruding part is matched with the pull pin.
Furthermore, the second sliding hole comprises a first hole channel and a second hole channel which are communicated, the first hole channel is arranged along the length direction of the self-locking plate, the second hole channel is positioned at the top end of the first hole channel and inclines towards the first sliding hole, and when the second moving part is in the first state, the transposition pin is positioned in the second hole channel.
Furthermore, the included angle between the first pore channel and the second pore channel is 110-160 degrees.
Further, the length of each of the first sliding hole and the second sliding hole is smaller than that of the second moving part, the first moving part and the second moving part are of sleeve structures, and the top end of the first moving part penetrates through the top end of the second moving part and extends upwards.
Furthermore, the positioning device further comprises a fixing piece, one end of the transposition pin is fixed on the fixing piece, and the second moving piece is arranged in a sliding mode along the length direction of the fixing piece.
Furthermore, the device also comprises a driving piece, wherein the driving piece is positioned in the fixed piece, and the output end of the driving piece is connected with the first moving piece.
Further, still include the base, the mounting is installed in the base.
Furthermore, the bottom ends of the first moving part, the second moving part and the fixing part are all provided with openings matched with the driving part.
Furthermore, the driving piece is a push rod motor, and a push rod of the push rod motor is connected with the first moving piece.
The invention utilizes the self-locking principle, and the two moving parts synchronously or relatively move through the swinging of the self-locking plate to form sequential extension. The method specifically comprises the following steps: the first moving piece extends upwards along the length direction of the second moving piece, the pull pin moves along with the first moving piece, and the other end of the pull pin moves in the first sliding hole. When the pull pin moves to the top end of the first sliding hole, the second moving part moves upwards along with the first moving part, and at the moment, the transposition pin moves downwards relative to the second moving part, so that the self-locking plate is stirred to swing towards the first sliding way, the pull pin is locked, and the second moving part and the first moving part form a whole and move upwards synchronously. When the first moving part begins to retract, the second moving part moves downwards synchronously along with the first moving part, the transposition pin moves upwards relative to the second moving part, when the transposition pin moves to the top end of the second sliding hole, the self-locking plate is stirred to move towards the direction far away from the first sliding way, so that the pull pin is loosened, the first moving part is separated from the second moving part, the second moving part returns, and the first moving part continues to retract downwards to the original position.
Compared with the prior art, the invention has the following advantages:
1. the sequential telescoping mechanism is provided with a self-locking plate, a transposition pin, a pull pin, a first sliding hole and a second sliding hole, and when a first moving part extends out, the self-locking plate swings and self-locks to enable the first moving part and the second moving part to form a whole to continue moving; when the second moving part is contracted to the proper position, the self-locking plate swings and is separated, and the first moving part is continuously contracted to the reset position. The medical equipment has the advantages of simple integral structure, reasonable design and low cost, realizes sequential stretching through a self-locking principle, improves the capability of resisting deflection deformation between moving parts, can accurately adjust the stretching height of the upper and lower limbs, and prolongs the service life of the medical equipment.
2. The self-locking plate in the sequential telescopic mechanism has a small structure, and does not influence the relative movement between moving parts and the section size of the moving parts; the moving parts in the sequential telescopic mechanism are all in a sleeve structure, so that the stability is high; the sequential telescoping mechanism adopts the push rod motor as a driving piece, has stable stroke and low cost.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 shows an exploded view of a sequential telescoping mechanism according to the present invention;
fig. 2 is a schematic structural view illustrating the connection of the second mover to the self-locking plate in fig. 1;
fig. 3 shows a schematic structural view of a self-locking plate according to the present invention;
fig. 4 shows a schematic structural view of a second mover in a first state according to the present invention;
fig. 5 is a schematic view showing a structure in which a first mover protrudes upward according to the present invention;
in the figure, 1 is a first moving part; 2 is a second moving part; 3, a pull pin; 4 is a transposition pin; 5 is a self-locking plate; 6 is a first sliding hole; 7 is a second sliding hole; 8 is a first convex part; 9 is a second boss; 10 is a sliding part; 11 is a first pore passage; 12 is a second pore canal; 13 is a fixing piece; 14 is a base; 15 is an opening; and 16 is a push rod motor.
Detailed Description
The invention is further illustrated by the following figures and examples.
The sequential telescoping mechanism as shown in fig. 1-3 comprises a first moving member 1, a second moving member 2, a pull pin 3, a transposition pin 4 and a self-locking plate 5; the second moving part 2 is provided with a first sliding hole 6 along the length direction, the first moving part 1 is arranged in a sliding manner along the length direction of the second moving part 2, one end of the pull pin 3 is connected with the first moving part 1, the other end of the pull pin 3 is arranged in the first sliding hole 6 in a sliding manner, the self-locking plate 5 is provided with a second sliding hole 7 along the length direction, one end of the self-locking plate 5 is rotatably arranged on the second moving part 2 and is positioned at one side of the first sliding hole 6, one end of the transposition pin 4 is fixed, the other end of the transposition pin 4 is arranged in the second sliding hole 7 in a sliding manner, so that the other end of the self-locking plate 5 is matched with the pull pin 3, and when the second moving part 2 is in a first state, the transposition pin 4 is positioned at the top end of the second sliding hole 7. The first state is a state in which the second moving member 2 does not perform telescopic movement. The first mover 1 and the second mover 2 are plate-shaped structures or sleeve structures. When the second moving member 2 is a plate-shaped structure, in order to ensure that the first moving member 1 is also a plate-shaped structure, the second moving member 2 is provided with a first sliding hole, the first moving member 1 is slidably arranged at one side of the second moving member, and a pull pin 3, a transposition pin 4 and a self-locking plate 5 are correspondingly arranged. When the second moving member 2 is in a sleeve-shaped structure, the first moving member 1 is in a sleeve shape or a plate shape, the two sides of the second moving member 2 are both provided with first sliding holes 6, the two sides of the first moving member 1 are correspondingly provided with pull pins 3, and the two sides of the second moving member 2 are correspondingly provided with a transposition pin 4 and a self-locking plate 5.
As shown in fig. 3, the self-locking plate 5 includes a first boss 8, a second boss 9, and a runner 10; the sliding part 10 is provided with a second sliding hole 7 along the length direction, the first protruding part 8 is positioned at one end of the sliding part 10, the first protruding part 8 is rotatably arranged on the second moving part 2, the second protruding part 9 is positioned at the other end of the sliding part 10, and the second protruding part 9 is matched with the pull pin 3. The first boss 8 is connected to the second moving member by a positioning pin, and the first boss 8 can rotate about the positioning pin. During specific installation, the self-locking plate 5 is installed along the length direction of the first sliding hole 6 and is positioned at one side of the first sliding hole 6, so that the second protruding part 9 can lock or release the pull pin 3 under the action of the index pin. The second boss 9 has a smooth transition to cooperate with the pull pin 3.
The second sliding hole 7 comprises a first hole channel 11 and a second hole channel 12 which are communicated, the first hole channel 11 is arranged along the length direction of the self-locking plate 5, the second hole channel 12 is positioned at the top end of the first hole channel 11 and inclines towards the first sliding hole 6, and when the second moving part 2 is not moved in a telescopic mode, the index pin 4 is positioned in the second hole channel 12. As shown in fig. 4 and 5, when the first moving member 1 starts to extend upwards, the pull pin 3 moves towards the top end of the first sliding hole 6, the pull pin 3 moves to the top end of the first sliding hole 6 to drive the second moving member 2 to move upwards, and at this time, the index pin moves downwards relative to the second moving member 2, so that the second protruding part 9 of the self-locking plate 5 is pushed to be close to the top end of the first sliding hole 6 to lock the pull pin 3, so that the first moving member 1 and the second moving member 2 are integrated into a whole and synchronously lift within the length range of the second sliding hole 7; the first moving part 1 retracts, the second moving part 2 moves downwards along with the first moving part 1, the index pin 4 moves upwards relative to the second moving part 2, when the index pin 4 moves to the second pore passage 12, the self-locking plate 5 is stirred to swing towards the direction far away from the first sliding hole 6 so as to release the pull pin 3, then the first moving part 1 is separated from the second moving part 2, and the first moving part continues to retract to the original position.
The included angle between the first duct 11 and the second duct 12 is 110-160 °, preferably 130-150 °. Through the arrangement, the index pin 4 can stir the self-locking plate 5 in the reciprocating expansion process of the self-locking plate 5 so as to lock or release the pull pin 3.
The length of the first sliding hole 6 and the second sliding hole 7 is less than that of the second moving member 2, wherein when the first moving member 1 and the second moving member 2 are both in a sleeve structure, the top end of the first moving member 1 passes through the top end of the second moving member 2 and extends upward. Through this arrangement, the first moving member 1 can be prevented from being separated from the second moving member, and the stability of the sequential telescoping mechanism is improved.
The positioning device is characterized by further comprising a fixing piece 13 and a base 14, wherein the fixing piece 13 is installed on the base, the second moving piece 2 is arranged in a sliding mode along the length direction of the fixing piece 13, one end of the transposition pin 4 is fixed to the fixing piece 13, and the other end of the transposition pin 4 is arranged in the second sliding hole 7 in a sliding mode. When the second moving member 2 slides along the length direction of the fixed member 13, the other end of the index pin 4 slides synchronously in the second sliding hole 7 to lock or unlock the pull pin 3.
The device further comprises a driving piece, wherein the driving piece is positioned in the fixing piece 13, and the output end of the driving piece is connected with the first moving piece 1. The driving part is a push rod motor 16, and a push rod of the push rod motor 16 is connected with the first moving part 1. The push rod motor 16 is arranged to push the first moving part to stretch back and forth, the stroke is stable, and the cost is low.
The bottom ends of the first moving part 1, the second moving part 2 and the fixing part 13 are all provided with openings 15 matched with the push rod motor. The provision of the opening 15 facilitates routing and mounting of the pusher motor 16.
The sliding arrangement can be realized by adopting a sliding rail or a sleeve.
When in specific use: as shown in fig. 1 to 5, the first moving member 1, the second moving member 2 and the fixing member 13 are all of a sleeve structure, wherein the upper ends of the second moving member and the fixing member 13 are open to facilitate telescopic movement. The fixing part 13 is installed on the base 14, the second moving part 2 is slidably arranged in the fixing part 13, one end of the transposition pin 4 is connected with the fixing part 13, the other end of the transposition pin 4 can move in the second sliding hole 7, the first moving part 1 is slidably arranged in the second moving part 2, one end of the pull pin 3 is connected with the first moving part 1, the other end of the pull pin 3 can move in the first sliding hole 6, the push rod motor 16 is arranged in the fixing part 13, and a push rod of the push rod motor 16 is connected with the first moving part 1 to drive the first moving part 1 to stretch.
When the first moving part 1 extends upwards, the pull pin 3 moves towards the top end of the first sliding hole 6, the pull pin 3 moves to the top end of the first sliding hole 6 and then drives the second moving part 2 to move upwards, the included angle between the first pore channel 11 and the second pore channel is 135 degrees, at the moment, the transposition pin moves downwards relative to the second moving part 2, and therefore the second protruding part 9 of the self-locking plate 5 is shifted to move towards the top end of the first sliding hole 6, the pull pin 3 is locked, the first moving part 1 and the second moving part 2 are integrated, and the synchronous lifting is realized within the length range of the second sliding hole 7; when the first moving part 1 retracts, the second moving part 2 moves downwards along with the first moving part 1, the index pin 4 moves upwards relative to the second moving part 2, when the index pin 4 moves to the second pore passage 12, the self-locking plate 5 is stirred to swing towards the direction far away from the first sliding hole 6 so as to release the pull pin 3, then the first moving part 1 is separated from the second moving part 2, the second moving part 2 just falls back to the base 14, and the first moving part 1 continues retracting to the original position.
The multi-section telescopic pipes can be sequentially stretched through the sequential stretching mechanism, so that the service life of the medical equipment is prolonged. In actual use, the number of the sleeve structures can be increased, so that the requirements of different strokes can be met.
The above-mentioned embodiments are preferred embodiments of the present invention, and the present invention is not limited thereto, and any other modifications or equivalent substitutions that do not depart from the technical spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. A sequential telescoping mechanism, characterized by: the self-locking device comprises a first moving part, a second moving part, a pull pin, a transposition pin and a self-locking plate; the second moving part is provided with a first sliding hole along the length direction, the first moving part is arranged in a sliding mode along the length direction of the second moving part, one end of the pull pin is connected with the first moving part, the other end of the pull pin is arranged in the first sliding hole in a sliding mode, the self-locking plate is provided with a second sliding hole along the length direction, one end of the self-locking plate is rotatably arranged on the second moving part, one end of the transposition pin is fixed, the other end of the transposition pin is arranged in the second sliding hole in a sliding mode, so that the other end of the self-locking plate is matched with the pull pin, and when the second moving part is in the first state, the transposition pin is located at the top end of the second sliding hole.
2. The sequential telescoping mechanism of claim 1, wherein: the self-locking plate comprises a first convex part, a second convex part and a sliding part; the sliding part is provided with a second sliding hole along the length direction, the first protruding part is positioned at one end of the sliding part, the first protruding part is rotatably arranged on the second moving part, the second protruding part is positioned at the other end of the sliding part, and the second protruding part is matched with the pull pin.
3. The sequential telescoping mechanism of claim 1, wherein: the second sliding hole comprises a first hole channel and a second hole channel which are communicated, the first hole channel is arranged along the length direction of the self-locking plate, the second hole channel is positioned at the top end of the first hole channel and inclines towards the first sliding hole, and when the second moving part is in the first state, the transposition pin is positioned in the second hole channel.
4. A sequential telescoping mechanism according to claim 3, wherein: the included angle between the first pore channel and the second pore channel is 110-160 degrees.
5. The sequential telescoping mechanism of claim 1, wherein: the first moving part and the second moving part are both of a sleeve structure, and the top end of the first moving part penetrates through the top end of the second moving part and extends upwards.
6. The sequential telescoping mechanism of claim 1, wherein: the positioning device is characterized by further comprising a fixing piece, one end of the transposition pin is fixed to the fixing piece, and the second moving piece is arranged in a sliding mode along the length direction of the fixing piece.
7. The sequential telescoping mechanism of claim 6, wherein: the driving piece is positioned in the fixing piece, and the output end of the driving piece is connected with the first moving piece.
8. The sequential telescoping mechanism of claim 6, wherein: still include the base, the mounting is installed in the base.
9. The sequential telescoping mechanism of claim 6, wherein: the bottom ends of the first moving part, the second moving part and the fixing part are provided with openings matched with the driving part.
10. The sequential telescoping mechanism of claim 7, wherein: the driving piece is a push rod motor, and a push rod of the push rod motor is connected with the first moving piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911200363.9A CN110762091A (en) | 2019-11-29 | 2019-11-29 | Sequential telescoping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911200363.9A CN110762091A (en) | 2019-11-29 | 2019-11-29 | Sequential telescoping mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110762091A true CN110762091A (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911200363.9A Pending CN110762091A (en) | 2019-11-29 | 2019-11-29 | Sequential telescoping mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110762091A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114366305A (en) * | 2022-01-11 | 2022-04-19 | 上海市胸科医院 | Telescoping device and medical robot |
-
2019
- 2019-11-29 CN CN201911200363.9A patent/CN110762091A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114366305A (en) * | 2022-01-11 | 2022-04-19 | 上海市胸科医院 | Telescoping device and medical robot |
| CN114366305B (en) * | 2022-01-11 | 2023-07-21 | 上海市胸科医院 | Telescoping device and medical robot |
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