CN216526016U - Micro-current trigger - Google Patents
Micro-current trigger Download PDFInfo
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- CN216526016U CN216526016U CN202123166973.7U CN202123166973U CN216526016U CN 216526016 U CN216526016 U CN 216526016U CN 202123166973 U CN202123166973 U CN 202123166973U CN 216526016 U CN216526016 U CN 216526016U
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- micro
- sleeve
- locking sleeve
- guide sleeve
- electromagnet
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Abstract
A micro-current trigger comprises a cylinder, wherein a guide sleeve is fixedly inserted at the upper end of the cylinder, a locking sleeve is inserted in the guide sleeve, a central shaft of the locking sleeve penetrates out of the guide sleeve and is sleeved with a first spring, and the upper end of the central shaft of the locking sleeve is connected with a mark rod; two transmission arms are symmetrically hinged in the middle of the barrel through a lining, hooks are respectively arranged at the upper ends of the transmission arms, the hooks are respectively inserted into the locking sleeve and hung on the clamping edge in the locking sleeve, and a second spring is arranged between the two transmission arms; an electromagnet is arranged at the lower part in the cylinder body, a pull rod is inserted in the electromagnet, and the upper end of the pull rod is in an inverted cone shape and is clamped between the lower ends of the two transmission arms. The trigger generates magnetic field force after the micro-current is introduced through the electromagnet and pulls the pull rod downwards to enable the two transmission arms to rotate reversely, so that the hook and the locking sleeve are unlocked, the mark rod can be driven to bounce under the action of the first spring, and the micro-current generation at the detection point can be indicated; the detection of the micro-current can be realized without power supply.
Description
Technical Field
The utility model relates to a detection tool, in particular to a micro-current trigger.
Background
The existing micro-current detection device adopts an electronic circuit for detection, and a built-in battery supplies power, so that a power supply is required to be provided when the micro-current detection device works. Even use the lithium cell, can realize check out test set's miniaturization, nimble, convenient, but there is the shortcoming that charges slowly, and the security is poor.
Particularly, when micro-current under special occasions is detected, if the external power supply of the test equipment is not allowed to supply power and the built-in lithium battery is not allowed, the existing micro-current detection device cannot be used.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a micro-current trigger which can realize the detection of micro-current without power supply.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a micro-current trigger comprises a cylinder body, wherein a guide sleeve is fixedly inserted at the upper end of the cylinder body, a locking sleeve is inserted in the guide sleeve in a clearance fit manner, a central shaft of the locking sleeve penetrates out of a central hole of the guide sleeve and is sleeved with a first spring, and the upper end of the central shaft of the locking sleeve is connected with a marking rod for indicating whether micro-current is generated at a detection point;
the middle part in the barrel is symmetrically hinged with two transmission arms through a bush, the upper ends of the two transmission arms are respectively provided with a hook, the hooks are respectively inserted into the locking sleeve and hung on the clamping edges at two sides of the inner hole of the locking sleeve, and a second spring is arranged between the two transmission arms and used for realizing the resetting of the transmission arms after detection;
the lower part in the cylinder body is provided with a hollow electromagnet, a pull rod is inserted into a central hole of the electromagnet, the upper end of the pull rod is in an inverted cone shape and is clamped between the lower ends of the two transmission arms, after micro-current is introduced into the electromagnet, magnetic field force is generated and the pull rod is pulled downwards, so that the two transmission arms rotate reversely, and the hook and the locking sleeve are unlocked.
Preferably, the lower ends of the driving arms are respectively provided with a rectangular opening, the rectangular openings are respectively provided with a rotatable driving roller through a pin shaft, and the upper end of the pull rod is clamped between the driving rollers at the lower ends of the two driving arms.
Preferably, the cylinder is formed by connecting a U-shaped part and a cover plate buckled at the notch of the U-shaped part, and the bushing is in a square sleeve shape and is fixed in the middle of the cylinder through a screw.
More preferably, the upper portion of the guide sleeve is circular and the lower portion of the guide sleeve is square, and the lower portion of the guide sleeve is inserted into the upper end of the cylinder through clearance fit and fixed through a screw.
Preferably, the center hole of the guide sleeve is stepped, and the middle part of the center hole is in sliding clearance fit with the center shaft of the locking sleeve.
It is further preferred that the marker post has a colored coating on the outer edge of its upper end to facilitate indexing.
Preferably, a lower plug is inserted into and fixed to the lower end of the cylinder, and a lead of the electromagnet penetrates through a central hole of the lower plug.
Preferably, the outer sleeve is fixedly sleeved outside the cylinder, a contact anode and a contact cathode are arranged in a central hole at the lower end of the outer sleeve, and the two wires of the electromagnet are respectively connected with the contact anode and the contact cathode.
Preferably, the upper end of the outer sleeve is connected with a gland, a third spring and a transparent button are sequentially inserted into the upper part of the central hole of the guide sleeve, the transparent button penetrates out of the central hole of the gland and is clamped on the bottom surface of the gland through a shoulder in the middle of the outer edge of the transparent button under the action of the third spring, and the upper end of the sign rod is inserted into the transparent button.
The utility model has the beneficial effects that:
after micro-current is introduced into the electromagnet, magnetic field force is generated and the pull rod is pulled downwards to enable the two transmission arms to rotate reversely, so that the hook and the locking sleeve are unlocked, the mark rod can be driven to bounce under the action of the first spring, and the micro-current generation at a detection point can be indicated; the detection of micro current can be realized without power supply, and the device is safe to use and reliable to work.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a perspective view of the present invention with the outer cover removed;
FIG. 3 is a schematic view of the structure of FIG. 2 with the cover removed;
fig. 4 is a schematic view of the mounting of the actuator arm.
In the figure: the device comprises an outer sleeve 1, a barrel 2, a U-shaped part 201, a cover plate 202, a pin shaft 3, a locking sleeve 4, a clamping edge 401, a transmission arm 5, a hook 501, a guide sleeve 6, a first spring 7, a gland 8, a mark rod 9, a transparent button 10, a third spring 11, a second spring 12, a lining 13, a transmission roller 14, a pull rod 15, an electromagnet 16, a lower plug 17, a contact anode 18 and a contact cathode 19.
Detailed Description
As shown in fig. 1 to 4, the micro-current trigger according to the present invention comprises a cylinder 2, wherein the cylinder 2 is formed by connecting a U-shaped member 201 and a cover plate 202 fastened at a notch of the U-shaped member, a guide sleeve 6 is inserted into an upper end of the cylinder 2 by a screw, an upper portion of the guide sleeve 6 is circular and a lower portion thereof is square, and a lower portion of the guide sleeve 6 is inserted into an upper end of the cylinder 2 by clearance fit and is fixed by a screw. The locking sleeve 4 is inserted in the guide sleeve 6 through sliding clearance fit, a square insertion hole is formed in the lower end of the locking sleeve 4, two wedge-shaped clamping edges 401 are symmetrically arranged on two sides in the insertion hole, a central shaft at the upper end of the locking sleeve 4 penetrates out of a central hole of the guide sleeve 6 and is sleeved with a first spring 7, and a mark rod 9 is connected to the upper end of the central shaft of the locking sleeve 4 through threads and used for indicating whether micro-current is generated in a detection point.
The center hole of the guide sleeve 6 is in a step shape, and the middle part of the center hole is in sliding clearance fit with the center shaft of the locking sleeve 4. The outer edge of the upper end of the marking rod 9 is provided with a colored coating for convenient indication.
Two transmission arms 5 are symmetrically hinged to the inner middle part of the barrel body 2 through a bush 13 by using a pin shaft 3, and the bush 13 is in a square sleeve shape and is fixed to the inner middle part of the barrel body 2 through a screw. The upper ends of the two transmission arms 5 are respectively provided with an integrated hook 501, the hooks 501 are respectively inserted into the insertion holes of the locking sleeve 4 and hung on the clamping edges 401 at two sides in the insertion holes to realize interlocking, and a second spring 12 is clamped above the pin shaft 3 between the two transmission arms 5 and used for realizing the resetting of the transmission arms 5 after detection. The lower ends of the transmission arms 5 are respectively provided with a rectangular opening, the rectangular openings are respectively provided with a rotatable transmission roller 14 through a pin shaft, and the vertical distance from the transmission roller 14 to the pin shaft 3 is far greater than the vertical distance from the second spring 12 to the pin shaft 3, so that the lever force generated when the transmission arms 5 rotate is increased.
A hollow electromagnet 16 is fixed at the lower part in the cylinder 2, a pull rod 15 is inserted into a central hole of the electromagnet 16, the upper end of the pull rod 15 is in an inverted cone shape and is clamped between the driving rollers 14 at the lower ends of the two driving arms 5, after micro-current is introduced into the electromagnet 16, magnetic field force is generated, the pull rod 15 is pulled downwards, the two driving arms 5 rotate reversely, and therefore the hook 501 and the locking sleeve 4 are unlocked.
A lower plug 17 is inserted into and fixed at the lower end of the cylinder 2, and a lead of the electromagnet 16 penetrates out of a central hole of the lower plug 17. An outer sleeve 1 is fixedly sleeved outside the cylinder 2, the outer sleeve 1 is in threaded connection with a lower plug 17 through a central sleeve at the lower end of the outer sleeve 1, a contact anode 18 and a contact cathode 19 are arranged in a central hole at the lower end of the outer sleeve 1, and two wires of the electromagnet 16 are respectively electrically connected with the contact anode 18 and the contact cathode 19.
The upper end of the outer sleeve 1 is connected with a gland 8 through threads, the gland 8 is pressed at the upper end of the guide sleeve 6, a third spring 11 and a transparent button 10 are sequentially inserted into the upper portion of a central hole of the guide sleeve 6, the outer edge of the transparent button 10 is stepped, the upper portion of the transparent button penetrates out of the central hole of the gland 8, the transparent button 10 is clamped on the bottom surface of the gland 8 through a shoulder in the middle of the outer edge of the transparent button under the action of the third spring 11, and the upper end of the marker post 9 is inserted into the transparent button 10. The transparent button 10 is made of transparent organic glass material.
When the device is used, the electromagnet 16 is electrically connected with a detection point of a device to be detected through a contact anode and a contact cathode, after the electromagnet receives micro-current, magnetic field force is generated by utilizing an electromagnetic induction principle and the pull rod 15 is pulled downwards, the two transmission arms 5 are driven to overcome the elastic force reverse rotation of the second spring 12 under the action of the conical surface at the upper end of the pull rod 15, so that the second spring 12 is compressed, the interlocking state of the hook 501 and the clamping edge 401 in the locking sleeve 4 is released after the two transmission arms 5 rotate reversely, the locking sleeve drives the mark rod 9 to bounce under the action of the first spring 7, the detection point is indicated to have the micro-current, and the micro-current detection is realized. After the detection is finished, the transparent button 10 is pressed to drive the marking rod 9 and the locking sleeve to reset downwards, so that the hook 501 and the locking sleeve return to an interlocking state under the action of the second spring for the next use.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (9)
1. A micro-current trigger comprises a cylinder body and is characterized in that: the upper end of the cylinder body is fixedly inserted with a guide sleeve, a locking sleeve is inserted in the guide sleeve in a clearance fit manner, a central shaft of the locking sleeve penetrates out of a central hole of the guide sleeve and is sleeved with a first spring, and the upper end of the central shaft of the locking sleeve is connected with a marking rod for indicating whether a micro-current is generated at a detection point;
the middle part in the barrel is symmetrically hinged with two transmission arms through a bush, the upper ends of the two transmission arms are respectively provided with a hook, the hooks are respectively inserted into the locking sleeve and hung on the clamping edges at two sides of the inner hole of the locking sleeve, and a second spring is arranged between the two transmission arms and used for realizing the resetting of the transmission arms after detection;
the lower part in the cylinder body is provided with a hollow electromagnet, a pull rod is inserted into a central hole of the electromagnet, the upper end of the pull rod is in an inverted cone shape and is clamped between the lower ends of the two transmission arms, after micro-current is introduced into the electromagnet, magnetic field force is generated and the pull rod is pulled downwards, so that the two transmission arms rotate reversely, and the hook and the locking sleeve are unlocked.
2. The micro-current trigger according to claim 1, wherein: the lower ends of the driving arms are respectively provided with a rectangular opening, the rectangular openings are respectively provided with a rotatable driving roller through a pin shaft, and the upper end of the pull rod is clamped between the driving rollers at the lower ends of the two driving arms.
3. The micro-current trigger according to claim 1, wherein: the barrel is formed by connecting a U-shaped piece and a cover plate buckled at the notch of the U-shaped piece, and the bushing is in a square sleeve shape and is fixed in the middle of the barrel through a screw.
4. The micro-current trigger according to claim 1, wherein: the upper portion of the guide sleeve is circular, the lower portion of the guide sleeve is square, and the lower portion of the guide sleeve is inserted into the upper end of the cylinder body in a clearance fit mode and is fixed through screws.
5. The micro-current trigger according to claim 4, wherein: the center hole of the guide sleeve is in a step shape, and the middle of the center hole is in sliding clearance fit with the center shaft of the locking sleeve.
6. The micro-current trigger according to claim 1, wherein: the outer edge of the upper end of the marker post is provided with a colored coating layer for convenient indication.
7. A microcurrent trigger according to any of claims 1-6, characterized by: a lower plug is inserted into and fixed at the lower end of the barrel, and a lead of the electromagnet penetrates out of a central hole of the lower plug.
8. The micro-current trigger according to claim 7, wherein: the outer surface of the cylinder is fixedly sleeved with an outer sleeve, a contact anode and a contact cathode are arranged in a central hole at the lower end of the outer sleeve, and two wires of the electromagnet are respectively connected with the contact anode and the contact cathode.
9. The micro-current trigger according to claim 8, wherein: the upper end of the outer sleeve is connected with a gland, a third spring and a transparent button are sequentially inserted into the upper part of the central hole of the guide sleeve, the transparent button penetrates out of the central hole of the gland and is clamped on the bottom surface of the gland through a shoulder in the middle of the outer edge of the transparent button under the action of the third spring, and the upper end of the marker rod is inserted into the transparent button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123166973.7U CN216526016U (en) | 2021-12-16 | 2021-12-16 | Micro-current trigger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123166973.7U CN216526016U (en) | 2021-12-16 | 2021-12-16 | Micro-current trigger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216526016U true CN216526016U (en) | 2022-05-13 |
Family
ID=81498806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123166973.7U Active CN216526016U (en) | 2021-12-16 | 2021-12-16 | Micro-current trigger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216526016U (en) |
-
2021
- 2021-12-16 CN CN202123166973.7U patent/CN216526016U/en active Active
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