CN219603140U - Lifting screw mechanism - Google Patents
Lifting screw mechanism Download PDFInfo
- Publication number
- CN219603140U CN219603140U CN202320451036.6U CN202320451036U CN219603140U CN 219603140 U CN219603140 U CN 219603140U CN 202320451036 U CN202320451036 U CN 202320451036U CN 219603140 U CN219603140 U CN 219603140U
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- Prior art keywords
- nut
- guide pipe
- clutch
- blocks
- screw mechanism
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- Types And Forms Of Lifts (AREA)
- Transmission Devices (AREA)
- Sanitary Device For Flush Toilet (AREA)
Abstract
The utility model relates to a lifting screw mechanism, which comprises a screw and a nut, wherein the nut is sleeved on the screw and is in threaded connection with the screw; the lifting screw mechanism further comprises a guide pipe and a clutch structure, the guide pipe is sleeved on the nut, the clutch structure is arranged between the guide pipe and the nut, the clutch structure is used for connecting or separating the guide pipe and the nut, and the guide pipe is fixedly connected with a guide plate; when the guide pipe is connected with the nut, the screw rod rotates, and the nut and the guide pipe lift together under the limit of the guide piece. The clutch structure is additionally arranged, and when the upper limit and the lower limit are adjusted, the screw is loosened by the clutch structure, so that the damage of the structure can be effectively avoided to a certain extent.
Description
Technical Field
The utility model relates to a nursing bed, in particular to a lifting screw mechanism.
Background
In the traditional lifting screw mechanism, nuts are directly fixed, so that when the lifting screw mechanism is adjusted to be limited up and down, if the screw is continuously rotated, damage is easily caused.
Disclosure of Invention
In order to solve the problems, the utility model provides a lifting screw mechanism.
The technical scheme of the utility model is as follows:
the lifting screw mechanism comprises a screw and a nut, wherein the nut is sleeved on the screw and is in threaded connection with the screw; the lifting screw mechanism further comprises a guide pipe and a clutch structure, the guide pipe is sleeved on the nut, the clutch structure is arranged between the guide pipe and the nut, the clutch structure is used for connecting or separating the guide pipe and the nut, and the guide pipe is fixedly connected with a guide plate;
when the guide pipe is connected with the nut, the screw rod rotates, and the nut and the guide pipe lift together under the limit of the guide piece.
The clutch structure comprises a plurality of clutch blocks, a plurality of holes are formed in the periphery of the guide pipe, the holes are matched with the clutch blocks, and each clutch block is respectively arranged in each hole in the periphery of the guide pipe to form a circle;
the clutch blocks are folded, the nut is held tightly, the nut and the guide pipe are connected, the clutch blocks are dispersed, the nut is loosened, and the nut and the guide pipe are separated.
The clutch blocks are arranged in the two holes on the periphery of the guide pipe respectively, and are clamped and fixed by the two C-shaped clamping pieces;
under the clamping of the two C-shaped clamping pieces, the two clutch blocks are folded, and when the nut is limited, the clamping of the two C-shaped clamping pieces is overcome, and the two clutch blocks are dispersed;
the two C-shaped clamping pieces are held on the guide pipe, and two ends of the C-shaped clamping pieces are respectively connected with the two clutch blocks.
The clutch block is provided with a plurality of teeth which are arranged side by side and extend into the grooves on the outer peripheral surface of the nut in a one-to-one correspondence.
And the contact surface of the clutch block and the nut is an arc surface.
The clutch block is provided with a key slot, two ends of each C-shaped clamping piece are provided with half protruding blocks, when the two C-shaped clamping pieces are held on the guide pipe, the half protruding blocks at the adjacent ends are spliced into protruding blocks, and the protruding blocks are embedded in the key slots on the clutch block.
Elastic pins are arranged at the upper end and the lower end of the screw rod, steps are arranged at the upper end and the lower end of the nut, the steps at the upper end of the nut are propped against the elastic pins arranged at the upper end of the screw rod to form a nut ascending limit, and the steps at the lower end of the nut are propped against the elastic pins arranged at the lower end of the screw rod to form a nut descending limit.
The catheter is fixedly connected with a fixing sheet.
The utility model has the advantages that the design is reasonable, the structure is simple, the clutch structure is additionally arranged, and when the upper limit and the lower limit are adjusted, the screw is loosened by utilizing the clutch structure, so that the damage of the structure can be effectively avoided to a certain extent; the clutch structure is composed of two C-shaped clamping pieces and two clutch blocks, is simple, saves material cost, is convenient to assemble, reduces labor intensity of workers, and is easy to disassemble, assemble, repair and maintain.
Drawings
Fig. 1 is an exploded view of a jack screw mechanism.
Fig. 2 is a schematic view of a nut structure.
Fig. 3 is a schematic diagram of a clutch block configuration.
Fig. 4 is a schematic view of a C-clip structure.
In the figure, a screw rod 1, a nut 2, a groove 2-1, a step 2-2, a guide pipe 3, a hole 3-1, a guide plate 4, a clutch block 5, teeth 5-1, a key slot 5-2, a C-shaped clamping piece 6, a half lug 6-1, a spring pin 7 and a fixing piece 8 are shown.
Description of the embodiments
As shown in fig. 1-4, the lifting screw mechanism comprises a screw 1 and a nut 2, wherein the nut 2 is sleeved on the screw 1 and is in threaded connection with the screw 1; the lifting screw mechanism further comprises a guide pipe 3 and a clutch structure, the guide pipe 3 is sleeved on the nut 2, the clutch structure is arranged between the guide pipe 3 and the nut 2, the clutch structure is used for connecting or separating the guide pipe 3 and the nut 2, and the guide pipe 3 is fixedly connected with a guide sheet 4;
when the guide pipe 3 is connected with the nut 2, the screw 1 rotates, and the nut 2 and the guide pipe 3 lift together under the restriction of the guide sheet 4;
the clutch structure comprises a plurality of clutch blocks 5, a plurality of holes 3-1 are formed in the peripheral side of the guide pipe 3, the holes 3-1 are matched with the clutch blocks 5, and each clutch block 5 is arranged in each hole 3-1 in the peripheral side of the guide pipe 3 to form a circle;
the clutch blocks 5 are folded, the nut 2 is held tightly, the nut 2 and the guide pipe 3 are connected, the clutch blocks 5 are dispersed, the nut 2 is loosened, and the nut 2 and the guide pipe 3 are separated;
the two clutch blocks 5 are arranged in the two holes 3-1 on the periphery of the guide pipe 3 respectively, the two holes 3-1 are opposite, and the two clutch blocks 5 are clamped and fixed by the two C-shaped clamping pieces 6;
under the clamping of the two C-shaped clamping pieces 6, the two clutch blocks 5 are folded, when the nut 2 is limited, the clamping of the two C-shaped clamping pieces 6 is overcome, and the two clutch blocks 5 are dispersed;
two C-shaped clamping pieces 6 are held on the guide pipe, and two ends of the C-shaped clamping pieces are respectively connected with the two clutch blocks 5;
a plurality of grooves 2-1 are arranged on the outer peripheral surface of the nut 2 side by side, a plurality of teeth 5-1 are arranged on the clutch block 5, and the teeth 5-1 are arranged side by side, correspond to one another and extend into the grooves 2-1 on the outer peripheral surface of the nut 2;
the contact surface of the clutch block 5 and the nut 2 is an arc surface;
the clutch block 5 is provided with a key slot 5-2, two ends of the C-shaped clamping piece 6 are respectively provided with a half convex block 6-1, when the two C-shaped clamping pieces 5 are held on the guide pipe 3, the half convex blocks 6-1 at the adjacent ends are spliced into convex blocks, and the convex blocks are embedded in the key slot 5-2 on the clutch block 5;
spring pins 7 are arranged at the upper end and the lower end of the screw 1, steps 2-2 are arranged at the upper end and the lower end of the nut 2, the steps at the upper end of the nut are propped against the spring pins 7 arranged at the upper end of the screw 1 to form ascending limit of the nut 2, and the steps at the lower end of the nut are propped against the spring pins 7 arranged at the lower end of the screw 1 to form descending limit of the nut 2;
the catheter 3 is fixedly connected with a fixing sheet 8.
Claims (8)
1. The lifting screw mechanism comprises a screw and a nut, wherein the nut is sleeved on the screw and is in threaded connection with the screw; the lifting screw mechanism is characterized by further comprising a guide pipe and a clutch structure, wherein the guide pipe is sleeved on the nut, the clutch structure is arranged between the guide pipe and the nut, the clutch structure is used for connecting or separating the guide pipe and the nut, and the guide pipe is fixedly connected with a guide plate;
when the guide pipe is connected with the nut, the screw rod rotates, and the nut and the guide pipe lift together under the limit of the guide piece.
2. The lifting screw mechanism according to claim 1, wherein the clutch structure comprises a plurality of clutch blocks, a plurality of holes are formed in the periphery of the guide pipe, the holes are matched with the clutch blocks, and each clutch block is respectively arranged in each hole in the periphery of the guide pipe to form a circle;
the clutch blocks are folded, the nut is held tightly, the nut and the guide pipe are connected, the clutch blocks are dispersed, the nut is loosened, and the nut and the guide pipe are separated.
3. The lifting screw mechanism according to claim 2, wherein the number of the clutch blocks is two, the number of the holes on the periphery of the guide pipe is two, the two holes are opposite, and the two clutch blocks are respectively arranged in the two holes on the periphery of the guide pipe and clamped and fixed by two C-shaped clamping pieces;
under the clamping of the two C-shaped clamping pieces, the two clutch blocks are folded, and when the nut is limited, the clamping of the two C-shaped clamping pieces is overcome, and the two clutch blocks are dispersed;
the two C-shaped clamping pieces are held on the guide pipe, and two ends of the C-shaped clamping pieces are respectively connected with the two clutch blocks.
4. The lifting screw mechanism according to claim 2, wherein a plurality of grooves are arranged on the outer peripheral surface of the nut side by side, and the clutch block is provided with a plurality of teeth, wherein the teeth are arranged side by side, correspond to one another and extend into the grooves on the outer peripheral surface of the nut.
5. The lifting screw mechanism according to claim 2, wherein the contact surface of the clutch block and the nut is an arc surface.
6. A lifting screw mechanism according to claim 3, wherein the clutch block is provided with a key slot, two ends of the C-shaped clamping piece are provided with half-protruding blocks, when the two C-shaped clamping pieces are held on the guide pipe, the half-protruding blocks at adjacent ends are spliced into protruding blocks, and the protruding blocks are embedded in the key slot on the clutch block.
7. The lifting screw mechanism according to claim 1, wherein the upper end and the lower end of the screw are provided with spring pins, the upper end and the lower end of the nut are provided with steps, the upper end steps of the nut are propped against the spring pins arranged at the upper end of the screw to form a nut lifting limit, and the lower end steps of the nut are propped against the spring pins arranged at the lower end of the screw to form a nut descending limit.
8. The lifting screw mechanism according to claim 1, wherein the guide tube is fixedly connected with a fixing piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320451036.6U CN219603140U (en) | 2023-03-10 | 2023-03-10 | Lifting screw mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320451036.6U CN219603140U (en) | 2023-03-10 | 2023-03-10 | Lifting screw mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219603140U true CN219603140U (en) | 2023-08-29 |
Family
ID=87746909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320451036.6U Active CN219603140U (en) | 2023-03-10 | 2023-03-10 | Lifting screw mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219603140U (en) |
-
2023
- 2023-03-10 CN CN202320451036.6U patent/CN219603140U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |