CN220041620U - Long-travel limit switch structure - Google Patents
Long-travel limit switch structure Download PDFInfo
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- CN220041620U CN220041620U CN202321425869.1U CN202321425869U CN220041620U CN 220041620 U CN220041620 U CN 220041620U CN 202321425869 U CN202321425869 U CN 202321425869U CN 220041620 U CN220041620 U CN 220041620U
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- guide rod
- moving part
- support
- mechanical moving
- guide groove
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- 230000001960 triggered effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000005272 metallurgy Methods 0.000 description 1
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- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
The utility model discloses a long-travel limit switch structure, which comprises a bottom plate arranged in a machine body, wherein a support and a switch bracket are arranged on the bottom plate, a proximity switch used for conveying signals is arranged on the switch bracket, the proximity switch and a mechanical moving part are respectively positioned at two ends of the support, and a guide groove penetrating through the support is formed in the support along the moving direction of the mechanical moving part; the support is provided with a contact mechanism and a reset piece, the contact mechanism comprises a guide rod, a collision block and a limit sleeve, the guide rod is inserted into the guide groove, two ends of the guide rod extending out of the guide groove are respectively connected with the collision block and the limit sleeve, the collision block is positioned at one end of the guide rod, which is close to the mechanical moving part, the outer side surface of the limit sleeve is provided with a contact surface, and the reset piece is used for driving the guide rod to reset; the side surface of the striker close to the mechanical moving member is set as an impact surface. The utility model has the effects of effectively realizing that the impact surface of the mechanical part is uneven and the action of the long-stroke impact trigger contact is accurately completed.
Description
Technical Field
The utility model relates to the technical field of limit switches, in particular to a long-stroke limit switch structure.
Background
The limit switch is a small-current master control electric appliance which uses collision of mechanical moving parts to make contacts act to switch on or switch off a control circuit, and is usually used for limiting the position or the travel of mechanical movement, so that the moving machinery automatically stops, moves reversely, moves in a variable speed or automatically reciprocates according to a certain position or travel. Specifically, in actual use, the travel switch is mounted at a predetermined position, and when the collision point on the mechanical moving part collides with the travel switch, the contact of the travel switch acts to realize the switching of the circuit.
At present, a common travel switch mainly comprises a direct-acting travel switch, a micro-switch, a roller rotary travel switch, a proximity switch and the like, wherein the proximity switch belongs to a non-contact switch, is a switch with high sensitivity, stability and long service life, and is widely applied to industries such as machine tools, metallurgy, chemical industry and the like.
However, in the actual use process, when the proximity switch control circuit is adopted, when one surface triggered by the mechanical moving part is uneven and the mechanical part needing long-stroke trigger contact action is large, the problem of inaccurate instruction transmission is easily caused.
Disclosure of Invention
The utility model aims to provide a long-stroke limit switch structure which effectively solves the problem that one surface of a mechanical moving part is impacted to be uneven and realizes control of a long-stroke limit switch.
In order to achieve the purpose of the utility model, the utility model provides a long-travel limit switch structure,
is installed in the organism, includes: the base plate is arranged in the machine body, a support and a switch bracket are arranged on the base plate, a proximity switch for conveying signals is arranged on the switch bracket, and the proximity switch and the mechanical movement part are respectively positioned at two ends of the support;
the support is provided with a guide groove penetrating through the support, and the guide groove is arranged in a horizontal axis direction parallel to the moving direction of the mechanical moving part;
the contact mechanism comprises a guide rod, a collision block and a limiting sleeve, wherein the guide rod is inserted into the guide groove, two ends of the guide rod extend out of a notch of the guide groove, two ends of the guide rod extending out of the guide groove are respectively connected with the collision block and the limiting sleeve, the collision block is positioned at one end of the guide rod, which is close to the mechanical moving part, the limiting sleeve is close to the proximity switch, a contact surface is arranged on the outer side surface of the limiting sleeve, and the resetting member is used for driving the guide rod to reset;
the surface of one side of the collision block, which is close to the mechanical moving part, is set as an impact surface, the impact surface is smoothly arranged, and the moving direction of the mechanical moving part is perpendicular to the plane of the impact surface.
As a preferable technical scheme of the utility model, the collision block is provided with a screw, and one end of the screw penetrates through the collision block and stretches into the guide rod.
As the preferable technical scheme of the utility model, the reset piece comprises a reset spring sleeved on the outer side of the guide rod, one end of the reset spring is propped against one side surface of the collision block, which is close to the guide rod, and the other end of the reset spring is propped against the notch of the guide groove.
As a preferable technical scheme of the utility model, the limiting sleeve is sleeved on the outer side surface of the guide rod, the limiting sleeve is provided with a stop screw, and the end part of the stop screw extends into the guide rod.
As a preferable technical scheme of the utility model, the outer side surface of the guide rod is attached to the inner wall of the guide groove.
As a preferable technical scheme of the utility model, the bottom plate is provided with a mounting assembly, and the mounting assembly comprises a mounting bolt which penetrates through the bottom plate and stretches into the machine.
As a preferable technical scheme of the utility model, the bottom of the switch bracket is provided with an adjusting hole, the adjusting hole is formed along the horizontal axis direction parallel to the moving direction of the mechanical moving part, the switch bracket is provided with an adjusting bolt, the adjusting bolt penetrates through the adjusting hole and stretches into the bottom plate, the nut of the adjusting bolt is abutted against the switch bracket, and the screw rod of the adjusting bolt and the adjusting hole can slide relatively.
Compared with the prior art, the utility model provides a long-travel limit switch structure, which has the following beneficial effects:
the mechanical moving part impacts the impact block, the impact block drives the guide rod and the limit sleeve to be close to the proximity switch, the trigger surface is arranged on the limit sleeve, the impact of the mechanical moving part drives the trigger surface to be close to and contact with the proximity switch, and the control of the long-stroke limit switch is realized; meanwhile, the impact surface is vertically and smoothly arranged, the contact area between the impact surface and the mechanical moving part is large, the problem that the triggering surface of the mechanical moving part is uneven is effectively solved, and the instruction conveying accuracy is improved.
Drawings
FIG. 1 is a top view of the overall structure of the present utility model;
FIG. 2 is a left side view of FIG. 1;
fig. 3 is a schematic view of the overall structure of the contact mechanism in the present utility model.
1. A bottom plate; 11. a through hole; 2. a support; 21. a guide groove; 3. a switch bracket; 31. a support plate; 311. an adjustment aperture; 32. flanging; 4. a proximity switch; 5. a contact mechanism; 51. a guide rod; 52. a bump; 521. an impact surface; 53. a limit sleeve; 531. a contact surface; 6. a reset member; 7. a stop screw; 8. installing a bolt; 9. and (5) adjusting a bolt.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-3, an embodiment of the present utility model provides a long-travel limit switch structure, including: the base plate 1 installed in the machine body, the support 2 and the switch bracket 3 arranged on the base plate 1, wherein the middle part of the support 2, which is close to one side surface of the mechanical moving part, is provided with a guide groove 21, and the guide groove 21 is arranged along the horizontal axis direction parallel to the moving direction of the mechanical part and penetrates through the support 2.
The contact mechanism 5 and the reset piece 6 for controlling the automatic reset of the contact mechanism 5 are arranged on the support 2, the contact mechanism 5 comprises a guide rod 51, a collision block 52 and a limit sleeve 53 which are inserted into the guide groove 21, the outer side surface of the guide rod 51 is attached to the inner wall of the guide groove 21, the guide rod 51 is guaranteed to move along the movement direction of a mechanical part all the time, the offset in the movement is reduced, two ends of the guide rod 51 extend out of the outer side of the guide groove 21 corresponding to a notch respectively, the collision block 52 is connected with one end of the guide rod 51, close to the mechanical movement part, of the collision block 52, the side surface, close to the mechanical movement part, of the collision block 52 is provided with a collision surface 521, the movement direction of the mechanical movement part is perpendicular to the plane where the collision surface 521 is located, and the surface 521 is smooth. The stopper 53 is fitted over the outer surface of the end of the guide rod 51 remote from the striker 52.
The switch bracket 3 is provided with the proximity switch 4, the proximity switch 4 extends along the horizontal axis direction perpendicular to the guide rod 51, the proximity switch 4 is positioned on one side of the support 2 away from the mechanical moving part, the contact of the proximity switch 4 is positioned on one end of the proximity switch 4 close to the support 2, one side surface of the limit sleeve 53 close to the switch bracket 3 is set to be a contact surface 531, and when the limit sleeve 53 moves to the position where the contact surface 531 is opposite to the contact, the proximity switch 4 sends an electric signal to the control panel.
When the mechanical moving part does not contact the collision block 52, the contact mechanism 5 is in a natural state, and after the mechanical moving part touches the collision surface 521, the mechanical moving part continues to move, at this time, the mechanical moving part pushes the collision block 52, the guide rod 51 and the limit sleeve 53 to move along the moving direction of the mechanical moving part, and when the contact surface 531 on the limit sleeve 53 moves to a position opposite to the contact, the proximity switch 4 sends a point signal to the control panel; when the mechanical moving part moves reversely, the mechanical moving part is gradually far away from the contact mechanism 5, and at the moment, the contact mechanism 5 is reset under the acting force of the reset piece 6, so that the operation of the long-stroke limit switch of the large-volume mechanical moving part can be realized. And the impact surface 521 is vertically and smoothly arranged, so that the contact area with the mechanical moving part is large, the problem that the triggering surface of the mechanical moving part is uneven is effectively solved, and the instruction conveying accuracy is improved.
The reset piece 6 comprises a reset spring, the reset spring is sleeved on the outer side surface of a section of the guide rod 51 between the collision block 52 and the support 2, the stop screw 7 is arranged on the stop sleeve 53, the stop screw 7 is used for fixing the stop sleeve 53 on the guide rod 51, when the moving distance of the collision block 52 needs to be adjusted in actual use, the stop screw 7 is manually unscrewed, the position of the stop sleeve 53 on the guide rod 51 can be moved, the position of the stop sleeve 53 is adjusted according to the moving length of the collision block 52, and then the adjustment of the extending length of one side of the guide rod 51 close to a mechanical moving part is realized. Meanwhile, one side surface of the limit sleeve 53, which is close to the support 2, is propped against the notch of the guide groove 21, so that the limit sleeve 53 can be conveniently installed and replaced, and the pretightening force of the return spring can be conveniently adjusted.
In order to facilitate replacement of the striker 52 of a different size depending on the size of the mechanically moving member or replacement of the striker 52 having an uneven impact surface 521 due to a long-time impact, the striker 52 is mounted to the end of the guide rod 51 by screws. Meanwhile, the guide rods 51 with different lengths are convenient to replace, so that the travel requirements of limit switches with different lengths can be met.
The bottom plate 1 is provided with a plurality of through holes 11, the bottom plate 1 is provided with a mounting assembly, the mounting assembly comprises four mounting bolts 8, and the mounting bolts 8 respectively penetrate through the corresponding through holes 11 and extend into the machine body, so that the bottom plate 1 can be detachably mounted on the machine body, and the mounting assembly is convenient to mount and use on a common machine tool and subsequent dismantling. The switch bracket 3 comprises a support plate 31, the support plate 31 is arranged on the upper side surface of the bottom plate 1, one end, close to the support 2, of the support plate 31 is turned upwards for ninety degrees to form a flanging 32, and the proximity switch 4 is arranged on the flanging 32.
Two adjusting holes 311 penetrating through the support plate 31 are formed in the upper side surface of the support plate 31 in the vertical direction, the adjusting holes 311 are formed in the extending mode along the moving direction of the mechanical moving part, the adjusting holes 311 are waist-shaped holes, adjusting bolts 9 are mounted in the adjusting holes 311, and the adjusting bolts 9 penetrate through the adjusting holes 311 and extend into the bottom plate 1. The lower side surface of the nut of the adjusting bolt 9 is abutted against the upper side surface of the supporting plate 31, and the screw rod of the adjusting bolt 9 and the adjusting hole 311 can slide relatively, so that the relative position between the contact surface 531 on the limit sleeve 53 and the contact on the proximity switch 4 can be adjusted conveniently.
The implementation principle of the long-travel limit switch structure provided by the embodiment of the utility model is as follows:
the guide rod 51 is fixed with the limit sleeve 53 through the stop screw 7 at one end far away from the mechanical moving part and extending out of the guide groove 21, and the pretightening force of the spring is adjusted; the proximity switch 4 is arranged on the switch bracket 3, the position of the support plate 31 is adjusted according to the processing requirement, the switch bracket 3 is fixed on the bottom plate 1 by adopting the adjusting bolt 9, when the collision block 52 contacts the contact point or the surface of the mechanical moving part, the collision block 52 pushes the guide rod 51 to drive the limit sleeve 53 to move along the mechanical moving part towards the direction close to the proximity switch 4 under the pushing of the mechanical moving part, and the proximity switch 4 sends an electric signal when the limit sleeve 53 moves to the contact point position of the contact surface 531 opposite to the proximity switch 4. When the mechanical moving part moves in a direction away from the proximity switch 4 until being separated from the collision block 52, the contact mechanism 5 is reset under the action of the elastic force of the reset spring, and then the above steps are repeated, so that the contact action can be triggered circularly.
The present utility model is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present utility model and the inventive concept thereof, can be replaced or changed within the scope of the present utility model.
Claims (7)
1. A long travel limit switch structure installs in the organism, its characterized in that includes: the device comprises a bottom plate (1) arranged in a machine body, wherein a support (2) and a switch bracket (3) are arranged on the bottom plate (1), a proximity switch (4) for conveying signals is arranged on the switch bracket (3), and the proximity switch (4) and a mechanical moving part are respectively positioned at two ends of the support (2);
the support (2) is provided with a guide groove (21) penetrating through the support (2), and the guide groove (21) is arranged in a horizontal axis direction parallel to the moving direction of the mechanical moving part;
the contact mechanism (5) and the reset piece (6) are arranged on the support (2), the contact mechanism (5) comprises a guide rod (51), a collision block (52) and a limit sleeve (53), the guide rod (51) is inserted into the guide groove (21), two ends of the guide rod (51) extend out of a notch of the guide groove (21), two ends of the guide rod (51) extending out of the guide groove (21) are respectively connected with the collision block (52) and the limit sleeve (53), the collision block (52) is positioned at one end, close to a mechanical moving part, of the guide rod (51), the limit sleeve (53) is close to the proximity switch (4), a contact surface (531) is arranged on the outer side surface of the limit sleeve (53), and the reset piece (6) is used for driving the guide rod (51) to reset;
the collision block (52) is arranged on one side surface close to the mechanical moving part to form a collision surface (521), the collision surface (521) is smoothly arranged, and the moving direction of the mechanical moving part is perpendicular to the plane of the collision surface (521).
2. A long travel limit switch structure according to claim 1, characterized in that the striker (52) is provided with a screw, one end of which passes through the striker (52) and protrudes into the guide rod (51).
3. The long-travel limit switch structure according to claim 1, wherein the reset piece (6) comprises a reset spring sleeved on the outer side of the guide rod (51), one end of the reset spring is abutted against one side surface of the collision block (52) close to the guide rod (51), and the other end of the reset spring is abutted against a notch of the guide groove (21).
4. A long travel limit switch structure according to claim 3, characterized in that the limit sleeve (53) is sleeved on the outer side surface of the guide rod (51), the limit sleeve (53) is provided with a stop screw (7), and the end part of the stop screw (7) extends into the guide rod (51).
5. The long-travel limit switch structure according to claim 1, wherein the outer side surface of the guide rod (51) is attached to the inner wall of the guide groove (21).
6. A long travel limit switch structure according to claim 1, characterized in that the base plate (1) is provided with a mounting assembly comprising a mounting bolt (8), the mounting bolt (8) passing through the base plate (1) and extending into the machine.
7. The long-travel limit switch structure according to claim 1, wherein an adjusting hole (311) is formed in the bottom of the switch bracket (3), the adjusting hole (311) is formed in the direction of a horizontal axis parallel to the moving direction of the mechanical moving part, an adjusting bolt (9) is arranged on the switch bracket (3), the adjusting bolt (9) penetrates through the adjusting hole (311) and stretches into the bottom plate (1), a nut of the adjusting bolt (9) abuts against the switch bracket (3), and a screw of the adjusting bolt (9) and the adjusting hole (311) can slide relatively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321425869.1U CN220041620U (en) | 2023-06-06 | 2023-06-06 | Long-travel limit switch structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321425869.1U CN220041620U (en) | 2023-06-06 | 2023-06-06 | Long-travel limit switch structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220041620U true CN220041620U (en) | 2023-11-17 |
Family
ID=88736717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321425869.1U Active CN220041620U (en) | 2023-06-06 | 2023-06-06 | Long-travel limit switch structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220041620U (en) |
-
2023
- 2023-06-06 CN CN202321425869.1U patent/CN220041620U/en active Active
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