CN211086568U - Hall sensor current-limiting protection structure - Google Patents
Hall sensor current-limiting protection structure Download PDFInfo
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- CN211086568U CN211086568U CN201922085533.5U CN201922085533U CN211086568U CN 211086568 U CN211086568 U CN 211086568U CN 201922085533 U CN201922085533 U CN 201922085533U CN 211086568 U CN211086568 U CN 211086568U
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- insulating
- contact
- limiting protection
- hall sensor
- shell
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Abstract
The embodiment of the utility model relates to the field of current-limiting protection devices, and particularly discloses a Hall sensor current-limiting protection structure, when a circuit short circuit is overloaded, a conduction rod is overheated, the generated heat can cause the thermal expansion effect of air in an annular cover, and further under the communication action of an airflow channel, the gas pushes a piston to move downwards after entering a fixed sleeve, and further pushes an insulating protective sleeve to move downwards to drive the two ends of the conduction rod to be respectively in contact with a first contact guide core and a second contact guide core, so that the instantaneous disconnection of an overload circuit is realized, and the effect of current-limiting protection is achieved; wherein, through mutually supporting that links to each other through the heat conduction stick between insulating heat dissipation inner panel and the insulating heat dissipation planking, further improve the sensitivity that the interior air of annular cover takes place the thermal expansion effect to effectively guarantee this current-limiting protection architecture's reliability.
Description
Technical Field
The embodiment of the utility model provides a relate to current-limiting protection device field, specifically are a hall sensor current-limiting protection structure.
Background
A hall sensor is a magnetic field sensor made according to the hall effect. Various hall elements manufactured by using the hall phenomenon are widely applied to the aspects of industrial automation technology, detection technology, information processing and the like. In the use process of the Hall sensor, the damage of the Hall sensor can be caused by the conditions of line overload, circuit short circuit and the like, the insulation is accelerated to deteriorate, the service life is shortened, and disasters are not directly caused; since the vias of such a short circuit are all metal vias, the short circuit is classified as a metallic short circuit, the short circuit current value can reach hundreds or thousands times of the current-carrying capacity of the loop conductor, and it can generate an abnormally high temperature or a large mechanical stress to cause various disasters. The effective limit control is performed for the overload and short circuit conditions in the circuit, which becomes an important precondition for improving the use safety and the service life of the electric circuit.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hall sensor current-limiting protection structure to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
A current-limiting protection structure of a Hall sensor comprises a shell, wherein a first external connecting conductor penetrates through the left side plate of the shell, a first contact guide core is arranged in the first external connecting conductor, and a first contact inclined surface is arranged on the lower surface of the end part of the first contact guide core extending into the shell; a second external connecting conductor penetrates through the right side plate of the shell, a second contact guide core is arranged in the second external connecting conductor, and a second contact inclined surface is arranged on the lower surface of the end part of the second contact guide core extending into the shell;
An insulating protective sleeve is arranged in the shell in a sliding mode in the vertical direction, and the insulating protective sleeve is supported and erected in the shell through connecting springs symmetrically arranged on the top surface of the insulating protective sleeve; the insulating protective sleeve is coaxially and fixedly sleeved on the outer ring of the conducting rod, wherein an insulating fixing ring for limiting and fixing the conducting rod is arranged on the end face of the insulating protective sleeve; the upper surfaces of the two ends of the conducting rod are provided with conducting inclined surfaces.
As a further aspect of the present invention: the conduction inclined plane on the same side with the first external connection conductor is positioned under the first contact inclined plane, and the conduction inclined plane on the same side with the second external connection conductor is positioned under the second contact inclined plane.
As a further aspect of the present invention: the connecting spring pushes the insulating protective sleeve to move in the vertical direction until the two contact inclined planes are respectively contacted with the two conduction inclined planes, and the first external connection conductor is conducted with the second external connection conductor.
As a further aspect of the present invention: the fixed cover in outer lane of insulating protective cover is equipped with annular cover, and the top outer wall fixed mounting of annular cover has the guide post, fixed mounting has fixed sleeve in the shell, is provided with the piston in the fixed sleeve.
As a further aspect of the present invention: an airflow channel is formed in the guide post, the top end of the airflow channel extends to the inner cavity of the fixed sleeve above the piston, and the bottom end of the airflow channel extends into the inner cavity of the annular cover.
As a further aspect of the present invention: the outer ring of the insulating protective sleeve is provided with an insulating heat dissipation outer plate arranged in the annular cover, the inner ring of the insulating protective sleeve is provided with an insulating heat dissipation inner plate, and the insulating heat dissipation inner plate is connected with the insulating heat dissipation outer plate through a heat conduction rod, so that the sensitivity of a thermal expansion effect of air in the annular cover is further improved.
Compared with the prior art, in the current-limiting protection structure provided by the embodiment of the utility model, when the short circuit of the circuit is overloaded, the conduction rod is overheated, the generated heat can cause the thermal expansion effect of the air in the annular cover, and then under the communication effect of the airflow channel, the air pushes the piston to move downwards after entering the fixed sleeve, and then pushes the insulating protective sleeve to move downwards to drive the two ends of the conduction rod to be respectively disconnected from the first contact guide core and the second contact guide core, so that the instantaneous disconnection of the overload circuit is realized, and the effect of current-limiting protection is achieved; wherein, through mutually supporting that links to each other through the heat conduction stick between insulating heat dissipation inner panel and the insulating heat dissipation planking, further improve the sensitivity that the interior air of annular cover takes place the thermal expansion effect to effectively guarantee this current-limiting protection architecture's reliability.
Drawings
In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
Fig. 1 is a schematic structural diagram of a current-limiting protection structure of a hall sensor provided in an embodiment of the present invention.
Fig. 2 is an enlarged schematic view of a portion a in fig. 1.
Fig. 3 is a three-dimensional structure diagram of the switch-on device in the current-limiting protection structure of the hall sensor provided by the embodiment of the present invention.
In the figure: 10-shell, 101-limit fixing ring;
20-a first external connection conductor, 201-a first contact guide core, 202-a first contact inclined plane;
30-conducting rod, 301-conducting inclined surface and 302-insulating fixing ring;
40-an insulating protective sleeve, 401-an insulating heat dissipation outer plate, 402-an insulating heat dissipation inner plate and 403-a heat conduction rod;
50-annular cover, 501-guide column, 502-piston, 503-airflow channel, 504-fixed sleeve;
60-connecting a spring;
70-second external connecting conductor, 701-second contact conducting core, 702-second contact inclined surface.
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.
Example 1
As shown in fig. 1, in the embodiment provided in the present invention, a current-limiting protection structure for a hall sensor includes a housing 10, a first external connection conductor 20 is disposed on a left side plate of the housing 10 in a penetrating manner, a first contact conductive core 201 is disposed in the first external connection conductor 20, and a first contact inclined surface 202 is disposed on a lower surface of an end portion of the first contact conductive core 201 extending into the housing 10; a second external connecting conductor 70 is arranged on the right side plate of the housing 10 in a penetrating manner, a second contact guide core 701 is arranged in the second external connecting conductor 70, and a second contact inclined surface 702 is arranged on the lower surface of the end part of the second contact guide core 701 extending into the housing 10;
Further, as shown in fig. 1 to 3, in the embodiment provided by the present invention, the insulating sheath 40 is slidably disposed in the housing 10 in the vertical direction, wherein the insulating sheath 40 is supported by the connecting springs 60 symmetrically disposed on the top surface thereof in the housing 10; the insulating protection sleeve 40 is coaxially and fixedly sleeved on the outer ring of the conducting rod 30, wherein an insulating fixing ring 302 for limiting and fixing the conducting rod 30 is arranged on the end face of the insulating protection sleeve 40; the upper surfaces of the two ends of the conducting rod 30 are provided with conducting inclined planes 301, the conducting inclined plane 301 on the same side with the first external connecting conductor 20 is positioned under the first contact inclined plane 202, the conducting inclined plane 301 on the same side with the second external connecting conductor 70 is positioned under the second contact inclined plane 702, and the connecting spring 60 pushes the insulating protective sleeve 40 to move in the vertical direction to the two contact inclined planes to be respectively contacted with the two conducting inclined planes 301, so that the conduction between the first external connecting conductor 20 and the second external connecting conductor 70 is realized.
Referring to fig. 1-3, in order to realize the open circuit between the two external conductors under the short circuit overload state, in the embodiment of the present invention, the outer ring of the insulating protective cover 40 is fixedly sleeved with the annular cover 50, the outer wall of the top end of the annular cover 50 is fixedly installed with the guide post 501, the inner of the housing 10 is fixedly installed with the fixed sleeve 504, the fixed sleeve 504 is internally provided with the piston 502, the guide post 501 is internally provided with the airflow channel 503, the top end of the airflow channel 503 extends to the inner cavity of the fixed sleeve 504 above the piston 502, the bottom end of the airflow channel 503 extends to the inner cavity of the annular cover 50, when the circuit is short circuited and overloaded, the conducting rod 30 is overheated, the generated heat will cause the thermal expansion effect of the air in the annular cover 50, and then under the communication effect of the airflow channel 503, the air enters the fixed sleeve 504 and then pushes the piston 502 to move downwards, and further pushes the insulating protective cover 40 to move downwards to drive the two ends of the conducting The second contact core 701 is disconnected, so that the overload circuit is instantly disconnected, and the current-limiting protection effect is achieved.
Example 2
As shown in fig. 1-2, different from embodiment 1, in the embodiment provided by the present invention, the outer ring of the insulating protective cover 40 is provided with an insulating heat dissipation outer plate 401 disposed in the annular cover 50, the inner ring of the insulating protective cover 40 is provided with an insulating heat dissipation inner plate 402, the insulating heat dissipation inner plate 402 is connected with the insulating heat dissipation outer plate 401 through a heat conduction rod 403, so as to further improve the sensitivity of the thermal expansion effect of the air in the annular cover 50.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The current-limiting protection structure of the Hall sensor is characterized by comprising a shell (10), wherein a first external connecting conductor (20) penetrates through the left side plate of the shell (10), a first contact guide core (201) is arranged in the first external connecting conductor (20), and a first contact inclined surface (202) is arranged on the lower surface of the end part of the first contact guide core (201) extending into the shell (10); a second external connecting conductor (70) penetrates through the right side plate of the shell (10), a second contact guide core (701) is arranged in the second external connecting conductor (70), and a second contact inclined surface (702) is arranged on the lower surface of the end part of the second contact guide core (701) extending into the shell (10);
An insulating protective sleeve (40) is arranged in the shell (10) in a sliding mode in the vertical direction, and the insulating protective sleeve (40) is arranged in the shell (10) in a supporting mode through connecting springs (60) symmetrically arranged on the top face of the insulating protective sleeve; the insulating protection sleeve (40) is coaxially and fixedly sleeved on the outer ring of the conducting rod (30), wherein an insulating fixing ring (302) for limiting and fixing the conducting rod (30) is arranged on the end face of the insulating protection sleeve (40); the upper surfaces of the two ends of the conducting rod (30) are provided with conducting inclined surfaces (301).
2. The Hall sensor current-limiting protection architecture according to claim 1, wherein the conducting inclined plane (301) on the same side as the first external connection conductor (20) is located directly below the first contact inclined plane (202), and the conducting inclined plane (301) on the same side as the second external connection conductor (70) is located directly below the second contact inclined plane (702).
3. The hall sensor current-limiting protection architecture according to claim 2, wherein the connecting spring (60) pushes the insulating protection cover (40) to move in a vertical direction until the two contact inclined planes are respectively in contact with the two conducting inclined planes (301), and the first external connecting conductor (20) is conducted with the second external connecting conductor (70).
4. The Hall sensor current-limiting protection structure according to claim 3, wherein an annular cover (50) is fixedly sleeved on an outer ring of the insulating protection cover (40), a guide post (501) is fixedly installed on an outer wall of a top end of the annular cover (50), a fixed sleeve (504) is fixedly installed in the housing (10), and a piston (502) is arranged in the fixed sleeve (504).
5. The Hall sensor current-limiting protection structure according to claim 4, wherein an air flow channel (503) is formed in the guide column (501), the top end of the air flow channel (503) extends to the inner cavity of the fixed sleeve (504) above the piston (502), and the bottom end of the air flow channel (503) extends to the inner cavity of the annular cover (50).
6. Hall sensor current-limiting protection architecture according to claim 4 or 5, characterized in that the outer ring of the insulating protection cover (40) is provided with an outer insulating and heat-dissipating plate (401) disposed inside the annular cover (50), the inner ring of the insulating protection cover (40) is provided with an inner insulating and heat-dissipating plate (402), and the inner insulating and heat-dissipating plate (401) and the inner insulating and heat-dissipating plate (402) are connected by a heat conducting rod (403).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922085533.5U CN211086568U (en) | 2019-11-28 | 2019-11-28 | Hall sensor current-limiting protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922085533.5U CN211086568U (en) | 2019-11-28 | 2019-11-28 | Hall sensor current-limiting protection structure |
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| Publication Number | Publication Date |
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| CN211086568U true CN211086568U (en) | 2020-07-24 |
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| CN201922085533.5U Active CN211086568U (en) | 2019-11-28 | 2019-11-28 | Hall sensor current-limiting protection structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112179395A (en) * | 2020-09-15 | 2021-01-05 | 南京田空灵电子商务有限公司 | Energy-saving financial electronic detection equipment with reminding effect |
| CN113453463A (en) * | 2021-06-17 | 2021-09-28 | 武汉铁路职业技术学院 | Power communication equipment box for rail transit |
-
2019
- 2019-11-28 CN CN201922085533.5U patent/CN211086568U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112179395A (en) * | 2020-09-15 | 2021-01-05 | 南京田空灵电子商务有限公司 | Energy-saving financial electronic detection equipment with reminding effect |
| CN113453463A (en) * | 2021-06-17 | 2021-09-28 | 武汉铁路职业技术学院 | Power communication equipment box for rail transit |
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