CN215682051U - Lifting driver with multiple strokes - Google Patents
Lifting driver with multiple strokes Download PDFInfo
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- CN215682051U CN215682051U CN202121757157.0U CN202121757157U CN215682051U CN 215682051 U CN215682051 U CN 215682051U CN 202121757157 U CN202121757157 U CN 202121757157U CN 215682051 U CN215682051 U CN 215682051U
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- limit switch
- switch
- touch head
- contact
- lower limit
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Abstract
The utility model discloses a multi-stroke lifting driver, which is characterized by comprising a shell, wherein a motor, a worm fixedly connected with an output shaft of the motor, a worm wheel connected with the worm and a lead screw rotating along with the worm wheel are respectively arranged in the shell, a stroke switch touch piece is connected to the lead screw, a long touch head and a short touch head are arranged on the stroke switch touch piece side by side, a circuit board is arranged in the shell, an upper limit switch and a lower limit switch are arranged on the circuit board, the upper limit switch is a single-link switch, and the lower limit switch is arranged below the upper limit switch. The lifting driver has three limiting positions when working, has the function of preventing hands from being clamped, can lead the touch piece to return to the lowest point for resetting through external control when the lifting position has deviation, and can add a plurality of micro switches between the safety switch point and the upper limiting switch in the lifting process according to different habits or crowds with different heights, thereby setting various lifting strokes.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a lifting drive with multiple strokes.
[ background of the utility model ]
In order to facilitate the life of people, products such as a tea table and an electric heating table are designed to be in a liftable mode, but the lifting structure of the existing lifting table product is complex and troublesome to install, the lifting structure only has a single stroke and only has the lifting and descending adjusting functions, and the safety distance for preventing clamping injury is not reserved in the descending process.
[ Utility model ] content
The utility model aims to overcome the defects of the prior art and provides a multi-stroke lifting driver with a hand clamping prevention function.
The utility model is realized by the following technical scheme:
a lift drive having multiple strokes, characterized by: including casing 1 be equipped with motor 6 in the casing respectively, with motor 6 output shaft fixed connection's worm 7, the worm wheel 11 of being connected with worm 7, along with worm wheel 11 together pivoted lead screw 8, threaded connection has travel switch to bump 9 on lead screw 8, is equipped with long touching head 4 and short touching head 5 on travel switch bumps 9 side by side, and the lower extreme height that the lower extreme height of long touching head 4 is less than short touching head 5 is equipped with circuit board 10 in casing 1, is equipped with limit switch 2 and lower limit switch 3 on circuit board 10, it is the single gang switch to go up limit switch 2, limit switch 3 establishes the below of limit switch 2 down, limit switch 2 and lower limit switch 3 are all arranged in between to long touching head 4 and short touching head 5.
The lifting drive with multiple strokes as described above, characterized in that: the lower limit switch 3 is a duplex switch, and has two parallel and independent contacts, namely a safety contact 12 touched by the long touch head 4 and a reset contact 13 touched by the short touch head 5.
The lifting drive with multiple strokes as described above, characterized in that: the lower limit switch 3 is a duplex switch and has a contact point, and the contact point includes a contact point left side 301 capable of being touched by the long touch head 4 and a contact point right side 302 capable of being touched by the short touch head 5.
The lifting drive with multiple strokes as described above, characterized in that: the lower limit switch 3 comprises two single-connection switches arranged side by side, namely a safety switch 14 capable of being touched by the long touch head 4 and a reset switch 15 capable of being touched by the short touch head 5.
The lifting drive with multiple strokes as described above, characterized in that: one end of the motor 6 is connected with a public power supply end, the other end of the motor is connected with one end of the upper limiting switch 2 in series, the other end of the upper limiting switch 2 is connected with one end of the lower limiting switch 3 in series, the upper limiting switch 2 is provided with a first normally closed contact 16, the first normally closed contact 16 is connected with a first diode 19 in parallel, the lower limiting switch 3 is connected with a second normally closed contact 17 and a third normally closed contact 18 in parallel, the second normally closed contact 17 is externally connected with a reset power supply end, the third normally closed contact 18 is externally connected with a safety position power supply end, the second normally closed contact 17 is connected with a second diode 20 in parallel, the third normally closed contact 18 is connected with a third diode 21 in parallel, the directions of the second diode 20 and the third diode 21 are the same, and the directions of the second diode 20 and the third diode 21 are opposite to the direction of the first diode 19.
The lifting drive with multiple strokes as described above, characterized in that: the length of long touching head 4 is greater than the length of short touching head 5, the upper end of long touching head 4 and short touching head 5 flushes, the contact of last limit switch 2 is touched by long touching head 4 or/and short touching head 5.
The lifting drive with multiple strokes as described above, characterized in that: the upper limit switch 2 and the lower limit switch 3 are both micro switches.
The lifting drive with multiple strokes as described above, characterized in that: the screw rod 8 is a hollow rod, two ends of the screw rod 8 are respectively provided with an oil-containing bearing 22, the outer ring of the oil-containing bearing 22 is fixed on the shell 1, and the inner ring of the oil-containing bearing 22 is fixed on the screw rod 8.
The lifting drive with multiple strokes as described above, characterized in that: the travel switch touch piece 9 is provided with a limiting sliding sheet 23, and a sliding groove for the limiting sliding sheet 23 to slide is correspondingly arranged in the casing 1.
Compared with the prior art, the utility model has the following advantages:
1. the lifting driver has three limiting positions when working, is suitable for the use requirements of tea tables and electric heating tables, has a hand clamping prevention function, can lead the touch piece to return to the lowest point for resetting through external control when the lifting position has deviation, and can add a plurality of micro switches between the safety switch point and the upper limiting switch in the lifting process according to different habits or crowds with different heights, thereby setting various lifting strokes.
[ description of the drawings ]
FIG. 1 is a schematic plan view of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a schematic block diagram of the present invention;
FIG. 4 is a plan view of the travel switch block of the present invention;
FIG. 5 is a perspective view of the travel switch strike of the present invention;
FIG. 6 is a front view of the circuit board of the present invention;
FIG. 7 is a top view of the circuit board of the present invention;
FIG. 8 is a plan view of a first embodiment of a lower limit switch of the present invention;
FIG. 9 is a plan view of a second embodiment of a lower limit switch of the present invention;
FIG. 10 is a plan view of a third embodiment of a lower limit switch of the present invention;
FIG. 11 is a schematic view of the travel switch catch hitting the upper limit switch;
FIG. 12 is a schematic view of the travel switch catch hitting the safety switch;
FIG. 13 is a schematic view of the travel switch catch hitting the reset switch;
FIG. 14 is a schematic plan view of the electric heating table in a raised state;
FIG. 15 is a schematic plan view of the electric heating table in a lowered state;
FIG. 16 is a circuit schematic of the present invention;
FIG. 17 is a circuit schematic of the up-limit switch of the present invention;
FIG. 18 is a circuit schematic of the utility model down to a reset switch;
fig. 19 is a circuit schematic of the utility model down to a safety switch.
In the figure: 1 is a shell; 2 is an upper limit switch; 3 is a lower limit switch; 301 is the left side of the contact; 302 is the contact right side; 4 is a long touch head; 5 is a short touch head; 6 is a motor; 7 is a worm; 8 is a screw rod; 9 is a travel switch touch piece; 10 is a circuit board; 11 is a worm wheel; 12 is a safety contact; 13 is a reset contact; 14 is a safety switch; 15 is a reset switch; 16 is a first normally closed contact; 17 is a second normally closed contact; 18 is a third normally closed contact; 19 is a first diode; 20 is a second diode; 21 is a third diode; 22 is an oil bearing; 23 is a limiting slide sheet; 24 is a lifting pipe; and 25 is a fixed tube.
[ detailed description ] embodiments
The technical features of the present invention will be described in further detail with reference to the accompanying drawings so that those skilled in the art can understand the technical features.
The utility model provides a lift driver with multiple stroke, as shown in fig. 1 to 19, including casing 1 be equipped with motor 6 in the casing 1 respectively, with motor 6 output shaft fixed connection's worm 7, the worm wheel 11 of being connected with worm 7, along with worm wheel 11 together pivoted lead screw 8, threaded connection has travel switch to bump 9 on lead screw 8, is equipped with long touching head 4 and short touching head 5 on travel switch bumps 9 side by side, and the lower extreme height of long touching head 4 is less than the lower extreme height of short touching head 5, is equipped with circuit board 10 in casing 1, is equipped with limit switch 2 and lower limit switch 3 on circuit board 10, upper limit switch 2 is the simplex switch, lower limit switch 3 is established in upper limit switch 2's below, long touching head 4 and short touching head 5 all are arranged in between upper limit switch 2 and lower limit switch 3.
Two ends of the screw rod 8 are respectively provided with an oil bearing 22, the outer ring of the oil bearing 22 is fixed on the shell 1, and the inner ring is fixed on the screw rod 8. The screw 8 is rotatably positioned on the housing 1 by an oil bearing 22.
The lead screw 8 is hollow rod, can insert the transfer line of connecting outside elevation structure in the lead screw 8, and the transfer line rotates with the lead screw together for outside elevation structure can simplify, thereby makes the installation more convenient, drives the lift pipe 24 lift of electric heating table through the lead screw and goes up and down, and fixed pipe 25 is motionless.
Travel switch bumps and is equipped with spacing gleitbretter 23 on the piece 9 the corresponding spout that supplies spacing gleitbretter 23 to slide that is equipped with in the casing 1 prevents that travel switch from bumping and taking place to rock when piece 9 moves. The travel switch touch piece 9 is similar to a nut and is driven by the screw rod 8 to reciprocate up and down, when the long touch head 4 or the short touch head 5 touches the upper limit switch 2, the travel switch touch piece 9 stops rising, the lifting pipe 24 also stops rising, and the electric heating table rises to the highest position. Because the lower extreme height of long touching head 4 is less than the lower extreme height of short touching head 5, so in the decline process, limit switch 3 is down touched earlier to long touching head 4, touches down limit switch 3 after, and the warm table of electricity stops to descend to a safe distance A who prevents tong is left, as shown in fig. 15.
Preferably, the length of the long touch head 4 is greater than that of the short touch head 5, the upper ends of the long touch head 4 and the short touch head 5 are flush at the same height, and the contact of the upper limit switch 2 is touched by the long touch head 4 or/and the short touch head 5, and the long touch head 4 is used for touching the contact of the upper limit switch 2.
Further, the upper limit switch 2 and the lower limit switch 3 are both micro switches.
When the lifting height of the electric heating table has a large error or the safety distance deviation is large, the lifting driver needs to be reset, a reset function is necessary to be set, the lifting driver is reset to the original safety distance height again, the lower limit switch 3 needs to have the functions of two switches, and the following three embodiments are provided.
The first embodiment of the lower limit switch 3 is shown in fig. 8:
the lower limit switch 3 is a duplex switch, and has two parallel and independent contacts, namely a safety contact 12 touched by the long touch head 4 and a reset contact 13 touched by the short touch head 5. The safety contact 12 and the reset contact 13 are identical in structure and located at the same height, when the long touch head 4 touches the safety contact 12, the electric heating table leaves a safety distance A for preventing hands from being clamped, the control travel switch touch piece 9 continues to descend, the long touch head 4 crosses the safety contact 12 until the short touch head 5 touches the reset contact 13, and the lifting driver resets, as shown in fig. 12 and 13.
The second embodiment of the lower limit switch 3 is shown in fig. 9:
the lower limit switch 3 is a duplex switch and has a contact point, and the contact point includes a contact point left side 301 capable of being touched by the long touch head 4 and a contact point right side 302 capable of being touched by the short touch head 5. The contact left side 301 functions as the safety contact 12 of the first embodiment, and the contact right side 302 functions as the reset contact 13 of the first embodiment.
The third embodiment of the lower limit switch 3 is shown in fig. 10:
the lower limit switch 3 comprises two single-connection switches arranged side by side, namely a safety switch 14 capable of being touched by the long touch head 4 and a reset switch 15 capable of being touched by the short touch head 5. The safety switch 14 functions as the safety contact 12 of the first embodiment, and the reset switch 15 functions as the reset contact 13 of the first embodiment.
The circuit schematic diagram of the utility model is shown in fig. 16 to 19, one end of the motor 6 is connected with a public power supply end, the other end is connected with one end of the upper limit switch 2 in series, the other end of the upper limit switch 2 is connected with one end of the lower limit switch 3 in series, the upper limit switch 2 is provided with a first normally closed contact 16, the first normally closed contact 16 is connected with a first diode 19 in parallel, the lower limit switch 3 is connected with a second normally closed contact 17 and a third normally closed contact 18 in parallel, the second normally closed contact 17 is externally connected with a reset power supply end, the third normally closed contact 18 is externally connected with a safe position power supply end, the second normally closed contact 17 is connected with a second diode 20 in parallel, the third normally closed contact 18 is connected with a third diode 21 in parallel, and the directions of the second diode 20 and the third diode 21 are the same and are opposite to the direction of the first diode 19.
The second normally closed contact 17 is the reset contact 13 of the first embodiment, and the third normally closed contact 18 is the safety contact 12 of the first embodiment.
In the rising state: the public power supply end is connected with the positive electrode of a power supply, the reset power supply end/the safety position power supply end is connected with the negative electrode of the power supply, the travel switch touch piece 9 rises, the travel switch touch piece 9 leaves the lower limit switch, the first normally closed contact 16, the second normally closed contact 17 and the third normally closed contact 18 are all closed, the circuit is in a power-on state, when the travel switch touch piece 9 contacts the upper limit switch 2, the first normally closed contact 16 is disconnected, and at the moment, the whole lifting system stops working, as shown in fig. 17.
Descending from the highest position to a safe position state: the public power supply end is connected with the negative electrode of the power supply, the reset power supply end is not connected with the power supply, the power supply end at the safe position is connected with the positive electrode of the power supply, the first normally-closed contact 16, the second normally-closed contact 17 and the third normally-closed contact 18 are all closed, when the long touch head 4 descends to touch the third normally-closed contact 18, the third normally-closed contact 18 is disconnected, the whole lifting system stops at the safe position to prevent external objects from being clamped, and at the moment, the lifting system stops working, as shown in fig. 19.
From the safe position down to the reset point state: the public power supply end is connected with the negative electrode of the power supply, the reset power supply end is connected with the positive electrode of the power supply, the power supply end at the safe position is not connected with electricity, the first normally closed contact 16, the second normally closed contact 17 and the third normally closed contact 18 are all closed, the short touch head 5 touches the second normally closed contact 17, the second normally closed contact 17 is disconnected, and the whole lifting system stops working and resets to the safe distance position.
The embodiment of the present invention is described only for the preferred embodiment of the present invention, and not for the limitation of the concept and scope of the present invention, and the technical solution of the present invention is subject to various modifications and improvements by those skilled in the art without departing from the design concept of the present invention.
Claims (9)
1. A lift drive having multiple strokes, characterized by: comprises a shell (1), wherein a motor (6), a worm (7) fixedly connected with an output shaft of the motor (6), a worm wheel (11) connected with the worm (7) and a screw rod (8) rotating along with the worm wheel (11) are respectively arranged in the shell (1), a travel switch touch piece (9) is connected on the screw rod (8) in a threaded manner, a long touch head (4) and a short touch head (5) are arranged on the travel switch touch piece (9) side by side, the lower end of the long touch head (4) is lower than the lower end of the short touch head (5), a circuit board (10) is arranged in the shell (1), an upper limit switch (2) and a lower limit switch (3) are arranged on the circuit board (10), the upper limit switch (2) is a single-connection switch, the lower limit switch (3) is arranged below the upper limit switch (2), and the long touch head (4) and the short touch head (5) are arranged between the upper limit switch (2) and the lower limit switch (3).
2. The lift drive with multi-stroke of claim 1, wherein: the lower limit switch (3) is a duplex switch, and is provided with two parallel and mutually independent contacts, namely a safety contact (12) which can be touched by the long touch head (4) and a reset contact (13) which can be touched by the short touch head (5).
3. The lift drive with multi-stroke of claim 1, wherein: the lower limit switch (3) is a duplex switch and is provided with a contact, and the contact comprises a contact left side (301) which can be touched by the long touch head (4) and a contact right side (302) which can be touched by the short touch head (5).
4. The lift drive with multi-stroke of claim 1, wherein: the lower limit switch (3) comprises two single-connection switches arranged side by side, namely a safety switch (14) capable of being touched by the long touch head (4) and a reset switch (15) capable of being touched by the short touch head (5).
5. The lift drive with multiple strokes of any one of claims 1 to 4, wherein: one end of the motor (6) is connected with a public power supply end, the other end of the motor is connected with one end of the upper limit switch (2) in series, the other end of the upper limit switch (2) is connected with one end of the lower limit switch (3) in series, the upper limit switch (2) is provided with a first normally closed contact (16), the first normally closed contact (16) is connected with a first diode (19) in parallel, the lower limit switch (3) is connected with a second normally closed contact (17) and a third normally closed contact (18) in parallel, the second normally closed contact (17) is externally connected with a reset power supply end, the third normally closed contact (18) is externally connected with a safe position power supply end, the second normally closed contact (17) is connected with a second diode (20) in parallel, the third normally closed contact (18) is connected with a third diode (21) in parallel, the second diode (20) and the third diode (21) are in the same direction and opposite to the direction of the first diode (19).
6. The lift drive with multiple strokes of any one of claims 1 to 4, wherein: the length of long touch head (4) is greater than the length of short touch head (5), the upper end of long touch head (4) and short touch head (5) flushes, go up the contact of limit switch (2) and touch by long touch head (4) or/and short touch head (5).
7. The lift drive with multiple strokes of any one of claims 1 to 4, wherein: the upper limit switch (2) and the lower limit switch (3) are both micro-switches.
8. The lift drive with multiple strokes of any one of claims 1 to 4, wherein: the lead screw (8) is a hollow rod, oil-containing bearings (22) are respectively arranged at two ends of the lead screw (8), the outer ring of each oil-containing bearing (22) is fixed on the shell (1), and the inner ring of each oil-containing bearing is fixed on the lead screw (8).
9. The lift drive with multiple strokes of any one of claims 1 to 4, wherein: the travel switch touch piece (9) is provided with a limiting sliding sheet (23), and a sliding groove for sliding the limiting sliding sheet (23) is correspondingly arranged in the casing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121757157.0U CN215682051U (en) | 2021-07-29 | 2021-07-29 | Lifting driver with multiple strokes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121757157.0U CN215682051U (en) | 2021-07-29 | 2021-07-29 | Lifting driver with multiple strokes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215682051U true CN215682051U (en) | 2022-01-28 |
Family
ID=79982415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121757157.0U Active CN215682051U (en) | 2021-07-29 | 2021-07-29 | Lifting driver with multiple strokes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215682051U (en) |
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2021
- 2021-07-29 CN CN202121757157.0U patent/CN215682051U/en active Active
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