CN214378162U - Mechanical on-off switch of explosion-proof power supply - Google Patents
Mechanical on-off switch of explosion-proof power supply Download PDFInfo
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- CN214378162U CN214378162U CN202120792339.5U CN202120792339U CN214378162U CN 214378162 U CN214378162 U CN 214378162U CN 202120792339 U CN202120792339 U CN 202120792339U CN 214378162 U CN214378162 U CN 214378162U
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- switch
- knob
- rotating shaft
- shaft sleeve
- screw
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Abstract
The utility model belongs to the technical field of the on-off switch, concrete technical scheme is: a mechanical on-off switch of an explosion-proof power supply comprises a rotating shaft sleeve and a knob rod penetrating through the rotating shaft sleeve, wherein one end of the rotating shaft sleeve is movably connected with an on-off indicator, the other end of the rotating shaft sleeve is provided with an explosion-proof switch, one end of the knob rod is provided with a manual knob, the other end of the knob rod is provided with a contact screw, the explosion-proof switch is provided with a U-shaped groove, a ball spring jack and a spring piece are arranged in the U-shaped groove, the spring piece is provided with a concave hole, the contact screw is arranged above the spring piece, the ball spring jack is arranged below the spring piece, the manual knob is rotated, the knob rod drives the contact screw to rotate, a contact end of the contact screw is arranged in the concave hole, the spring piece is pressed downwards, and the contact screw, the spring piece and the ball spring jack are electrically communicated; in a similar way, the manual knob is rotated reversely, the contact end of the contact screw is separated from the concave hole, the elastic piece bounces upwards, the contact screw and the elastic piece are separated from the ball head spring jack screw, power supply is cut off, and the electric switch is quick, convenient and long in service life.
Description
Technical Field
The utility model belongs to the technical field of the on-off switch, concretely relates to be applied to in the pit and provide the second grade on-off device of power for equipment operations such as sensor, substation.
Background
The underground power supply is mainly used for providing various types of required direct current or alternating current power supplies for electrical equipment such as various sensors for safety monitoring, cameras, communication access equipment, relay equipment, driving intelligent electromagnetic starters and the like, and an explosion-proof power supply secondary power-off device is commonly used in the working and flammable and explosive environments.
However, the secondary power-off device of the conventional explosion-proof power supply has the following problems: the explosion-proof power supply has no secondary power-off device, sparks are possibly generated in the process of uncovering the wiring or replacing accessories, and accidents are caused; secondly, a secondary power-off device is not provided, and the electric quantity of the battery is continuously consumed in the transportation process, so that the electricity is wasted, and the service life of the battery is influenced; thirdly, a key type secondary power-off device is adopted, firstly, the key cap is worn for a long time, and the guide rod is eccentric, so that the key cap is easy to be blocked, and the using effect is influenced; secondly, the vertical spring contact mode easily causes the spring to deform after being used for many times, which causes poor contact, electric arc and safety accidents. Finally, the keycap can rebound, and obvious judgment is not made for the current on-off state.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem that prior art exists, the utility model provides an on-off device of knob formula, easy operation, long service life.
In order to achieve the above object, the utility model adopts the following technical scheme: a mechanical on-off switch of an explosion-proof power supply comprises a shell and a rotating shaft sleeve which are fixedly connected, wherein a knob rod is arranged in the rotating shaft sleeve in a penetrating mode, a check ring is riveted on the knob rod, and two ends of the knob rod extend to the outer portion of the rotating shaft sleeve.
One end of the rotating shaft sleeve is movably connected with an on-off indicator, the other end of the rotating shaft sleeve is provided with a switch baffle, and an explosion-proof switch is arranged on the switch baffle.
A manual knob is clamped at one end of a knob rod, the manual knob and the on-off indication board are arranged on the same side of the rotating shaft sleeve, the manual knob is rotated, and the on-off state at present is indicated through the on-off indication board.
The contact screw is installed at the other end of the knob rod, a U-shaped groove is formed in the top of the explosion-proof switch, a ball spring jack screw is installed in the U-shaped groove, one end of the elastic piece is fixed to the inner wall of the U-shaped groove, the other end of the elastic piece is free, a concave hole is formed in the elastic piece, the contact screw is arranged above the elastic piece, and the ball spring jack screw is arranged below the elastic piece.
The knob rod is provided with a limiting groove, a limiting screw is screwed into the rotating shaft sleeve inwards and clamped in the limiting groove, and the spherical end of the limiting screw is clamped in the limiting groove on the knob rod.
Rotating the manual knob to the 'on' position of the on-off indication board, driving the contact screw to rotate by the knob rod, arranging the contact end of the contact screw in the concave hole, pressing the elastic sheet downwards, and electrically communicating the contact screw, the elastic sheet and the ball head spring jackscrew; in a similar way, the manual knob is rotated reversely to the 'off' position of the on-off indication board, the contact end of the contact screw is separated from the concave hole, the elastic piece bounces upwards, the contact screw, the elastic piece and the ball head spring jack are separated, and power supply is cut off.
The top of the manual knob is provided with an on-off indication arrow, the on-off indication board is provided with an arc switch indication arrow, the manual knob is rotated, the on-off indication arrow rotates along the arc switch indication arrow, and when the on-off indication arrow indicates the 'on' position of the switch indication arrow, power supply is realized; the on/off indication arrow indicates that the power supply is cut off when the switch indicates the "off" position of the arrow.
For skid resistance, a square clamping head is arranged on the end head of the knob rod, a square clamping groove matched with the square clamping head in size is arranged in the manual knob, and the square clamping groove is arranged on the square clamping head; to prevent the manual knob from moving axially on the knob stem, a pan head screw is passed through a counter bore in the manual knob to lock the manual knob to the knob stem.
The contact screw is screwed into the knob rod, the upper end of the contact screw is arranged in the knob rod, and the contact end at the lower end of the contact screw extends out of the knob rod.
Preferably, the switch baffle is fixed on the rotating shaft sleeve through a plurality of cross pan head screws.
Preferably, the explosion-proof switch is fixed on the switch baffle plate through a cross pan head screw.
Wherein, as preferred, the break-make sign is fixed on the pivot cover through two rivets.
Preferably, the contact end of the contact screw is of a spherical structure, and the spherical structure can reduce the impact force of contact and separation and ensure smooth operation.
Compared with the prior art, the utility model, specifically beneficial effect is embodied in:
firstly, the utility model discloses a second grade break-make device of knob formula is in the transportation and the maintenance process outage of uncapping, avoids the battery to have the power consumptive and the production of spark of accident.
Second, the utility model discloses an on-off device of knob formula cooperates break-make arrow point sign, judges easily to the current state, directly sees to feel good.
Thirdly, the utility model discloses a copper pole double flute design is furnished with bulb spring jackscrew, has obvious judgement to rotatory whether target in place.
Fourth, the utility model discloses a spherical structure of contact screw presses flame proof switch body shell fragment, owing to adopt the form that sphere and plane contacted, has reduced frictional force greatly, has strengthened the smooth and easy degree of operation.
Drawings
Fig. 1 is a schematic view of the three-dimensional structure of the utility model with the shell removed.
Fig. 2 is a schematic perspective view of the rotary shaft sleeve of fig. 1 with the rotary shaft sleeve removed.
Fig. 3 is a schematic diagram of the internal structure of the present invention.
Fig. 4 is a schematic side view of the utility model after the outer shell is removed.
Fig. 5 is an exploded view of the present invention.
In the figure, 1 is a rotating shaft sleeve, 2 is a knob rod, 3 is a check ring, 4 is an on-off indication board, 5 is a switch baffle, 6 is an explosion-proof switch, 7 is a manual knob, 8 is a contact screw, 9 is a U-shaped groove, 10 is a ball spring jackscrew, 11 is an elastic sheet, 12 is a limiting groove, 13 is a limiting screw, and 14 is a shell.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1-5, a mechanical on-off switch of an explosion-proof power supply comprises a housing 14 and a rotating shaft sleeve 1 which are fixedly connected, a knob rod 2 penetrates through the rotating shaft sleeve 1, a retainer ring 3 is riveted on the knob rod 2, and two ends of the knob rod 2 extend to the outside of the rotating shaft sleeve 1.
One end of the rotating shaft sleeve 1 is movably connected with an on-off indicator 4, the other end of the rotating shaft sleeve 1 is provided with a switch baffle 5, and the switch baffle 5 is provided with an explosion-proof switch 6.
A manual knob 7 is clamped at one end of the knob rod 2, the manual knob 7 and the on-off indication board 4 are arranged on the same side of the rotating shaft sleeve 1, the manual knob 7 is rotated, and the current on-off state is indicated through the on-off indication board 4.
Contact screw 8 is equipped with to the other end of knob pole 2, and explosion-proof switch 6's top is equipped with U type recess 9, is equipped with bulb spring jackscrew 10 in the U type recess 9, and the one end of shell fragment 11 is fixed with U type recess 9's inner wall, and the other end of shell fragment 11 is free, and it has the shrinkage pool to open on the shell fragment 11, and contact screw 8 arranges the top of shell fragment 11 in, and bulb spring jackscrew 10 arranges the below of shell fragment 11 in.
A limiting groove 12 is formed in the knob rod 2, a limiting screw 13 is screwed into the rotating shaft sleeve 1 inwards and clamped in the limiting groove 12, and the spherical end of the limiting screw 13 is clamped in the limiting groove 12 in the knob rod 2.
Rotating the manual knob 7 to the 'on' position of the on-off indication board 4, driving the contact screw 8 to rotate by the knob rod 2, placing the contact end of the contact screw 8 in the concave hole, pressing the elastic sheet 11 downwards, and electrically communicating the contact screw 8, the elastic sheet 11 and the ball head spring jack 10; in a similar way, the manual knob 7 is rotated reversely to the 'off' position of the on-off indication board 4, the contact end of the contact screw 8 is separated from the concave hole, the elastic piece 11 is bounced upwards, the contact screw 8 and the elastic piece 11 are separated from the ball head spring jack 10, and power supply is cut off.
The top of the manual knob 7 is provided with an on-off indication arrow, the on-off indication board 4 is provided with an arc switch indication arrow, when the manual knob 7 is rotated, the on-off indication arrow rotates along the arc switch indication arrow, and when the on-off indication arrow indicates the 'on' position of the switch indication arrow, power supply is realized; the on/off indication arrow indicates that the power supply is cut off when the switch indicates the "off" position of the arrow.
For skid resistance, a square clamping head is arranged on the end of the knob rod 2, a square clamping groove matched with the square clamping head in size is arranged in the manual knob 7, and the square clamping groove is arranged on the square clamping head; to prevent the manual knob 7 from moving axially on the knob stem 2, a phillips head screw passes through a counter bore in the manual knob 7 to lock the manual knob 7 to the knob stem 2.
The contact screw 8 is screwed into the knob rod 2, the upper end of the contact screw is arranged in the knob rod 2, and the contact end at the lower end of the contact screw extends out of the knob rod 2.
Preferably, the switch bezel 5 is fixed to the spindle cover 1 by a plurality of cross pan head screws.
Preferably, the explosion-proof switch 6 is fixed on the switch baffle 5 by a cross pan head screw.
Preferably, the on-off indication plate 4 is fixed to the rotary shaft sleeve 1 by two rivets.
Preferably, the contact end of the contact screw 8 is a spherical structure, which can reduce the impact force of contact and separation and ensure smooth operation.
Preferably, the knob rod 2 is made of soft brass.
The utility model discloses a working process does: the manual knob 7 is rotated to realize two-gear switching, when the manual knob 7 is rotated, the manual knob 7 drives the knob rod 2 to rotate, due to the limiting function of the retainer ring 3, the rotation angle of the knob rod 2 is a limited value, due to the fact that the knob rod 2 is provided with the two limiting grooves 12, when the knob rod 2 rotates to an open position, the limiting screws 13 are clamped in the corresponding limiting grooves 12, the spherical end of the contact screw 8 is arranged in the concave hole of the elastic piece 11, electric connection of the contact screw 8, the elastic piece 11 and the ball head spring jack screw 10 is realized, and the starting switch is connected; when the contact screw 8 rotates to the closed position, the limiting screw 13 is clamped in the corresponding limiting groove 12, the spherical end of the contact screw 8 is separated from the concave hole of the elastic sheet 11, the contact screw 8, the elastic sheet 11 and the ball head spring jackscrew 10 are separated, the trigger switch is switched off, and an operator can obviously judge whether the contact screw rotates in place.
The foregoing is considered as illustrative and not restrictive of the preferred embodiments of the invention, and any modifications, equivalents and improvements made within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (9)
1. The mechanical on-off switch of the flame-proof power supply is characterized by comprising a shell (14) and a rotating shaft sleeve (1) which are fixedly connected, wherein a knob rod (2) penetrates through the rotating shaft sleeve (1), a check ring (3) is riveted on the knob rod (2), and two ends of the knob rod (2) extend to the outside of the rotating shaft sleeve (1);
one end of the rotating shaft sleeve (1) is movably connected with a on-off indication board (4), the other end of the rotating shaft sleeve (1) is provided with a switch baffle (5), and the switch baffle (5) is provided with an explosion-proof switch (6);
a manual knob (7) is clamped at one end of the knob rod (2), and the manual knob (7) and the on-off indication board (4) are arranged on the same side of the rotating shaft sleeve (1);
a contact screw (8) is arranged at the other end of the knob rod (2), a U-shaped groove (9) is formed in the top of the explosion-proof switch (6), a ball spring jack screw (10) is arranged in the U-shaped groove (9), one end of a spring piece (11) is fixed to the inner wall of the U-shaped groove (9), the other end of the spring piece (11) is free, a concave hole is formed in the spring piece (11), the contact screw (8) is arranged above the spring piece (11), and the ball spring jack screw (10) is arranged below the spring piece (11);
the knob rod (2) is provided with a limiting groove (12), and a limiting screw (13) is screwed into the rotating shaft sleeve (1) and can be clamped in the limiting groove (12).
2. The mechanical on-off switch of the flameproof power supply according to claim 1, characterized in that the contact screw (8) is placed in the concave hole to realize the electrical communication between the contact screw (8), the spring plate (11) and the ball spring jack (10); the contact screw (8) is separated from the concave hole, and the contact screw (8) and the elastic piece (11) are separated from the ball head spring jackscrew (10).
3. The mechanical on-off switch of the flameproof power supply according to claim 1, characterized in that an on-off indication arrow is arranged at the top of the manual knob (7), and an arc-shaped switch indication arrow is arranged on the on-off indication plate (4).
4. The mechanical on-off switch of the flameproof power supply according to claim 3, characterized in that a square clamping head is arranged at the end of the knob rod (2), a square clamping groove matched with the square clamping head is arranged in the manual knob (7), the square clamping groove is arranged on the square clamping head, and the cross pan head screw passes through a countersunk hole in the manual knob (7) and locks the manual knob (7) on the knob rod (2).
5. The mechanical on-off switch of the flameproof power supply according to claim 4, characterized in that the contact screw (8) is screwed into the knob rod (2), and the contact end of the contact screw (8) extends out of the knob rod (2).
6. The mechanical on-off switch of the flameproof power supply according to claim 5, characterized in that the switch baffle (5) is fixed on the rotating shaft sleeve (1) through a plurality of cross pan head screws.
7. The mechanical on-off switch of the flameproof power supply according to claim 6, characterized in that the flameproof switch (6) is fixed on the switch baffle (5) by cross pan head screws.
8. The mechanical on-off switch of the flameproof power supply according to claim 7, characterized in that the on-off sign (4) is fixed on the rotating shaft sleeve (1) by two rivets.
9. The mechanical on-off switch of the flameproof power supply according to claim 8, characterized in that the contact end of the contact screw (8) is of a spherical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120792339.5U CN214378162U (en) | 2021-04-19 | 2021-04-19 | Mechanical on-off switch of explosion-proof power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120792339.5U CN214378162U (en) | 2021-04-19 | 2021-04-19 | Mechanical on-off switch of explosion-proof power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214378162U true CN214378162U (en) | 2021-10-08 |
Family
ID=77974504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120792339.5U Active CN214378162U (en) | 2021-04-19 | 2021-04-19 | Mechanical on-off switch of explosion-proof power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214378162U (en) |
-
2021
- 2021-04-19 CN CN202120792339.5U patent/CN214378162U/en active Active
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