CN110993432A - In-place self-locking inertia switch - Google Patents
In-place self-locking inertia switch Download PDFInfo
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- CN110993432A CN110993432A CN201911175240.4A CN201911175240A CN110993432A CN 110993432 A CN110993432 A CN 110993432A CN 201911175240 A CN201911175240 A CN 201911175240A CN 110993432 A CN110993432 A CN 110993432A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/14—Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch
- H01H35/141—Details
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
Abstract
The invention discloses an in-place self-locking inertia switch, which belongs to the technical field of inertia switches. The in-place self-locking inertia switch is simple in structure and convenient and fast to assemble, can effectively realize matching and communication of the two static electrodes under preset overload, realize accurate work of the inertia switch, can accurately realize in-place self-locking after the inertia body is matched with the static electrodes, ensure that the two static electrodes are always communicated under the working state of the inertia switch, effectively improve the accuracy and reliability of the work of the inertia switch, promote the application of the inertia switch, and have better practical value and application prospect.
Description
Technical Field
The invention belongs to the technical field of inertial switches, and particularly relates to an in-place self-locking inertial switch.
Background
The inertial switch has very wide application in the fields of aerospace, automotive electronics, ammunition and the like. In general, an inertial switch is closed by a reaction force or a forward-impact inertial force when a carrier hits a target, and a function of switching a circuit from off to on is realized. The inertial switch has wide requirements in fuses, especially electromechanical fuses, and is an important component for realizing triggering detonation or landing self-destruction functions of the electromechanical fuses.
Currently, a combination structure of a spring and a mass is often used in a conventional inertial switch, and the spring and the mass serve as a movable electrode and correspond to a fixed electrode which is separately provided and spaced apart from the movable electrode by a predetermined distance. When the movable electrode is overloaded, the spring is extended, and the mass block collides with the fixed electrode, so that the switch is switched from off to on. Although the inertial switch can meet the use requirement to a certain extent, the inertial switch also has certain defects, and mainly, after the mass block collides with the fixed electrode, the mass block is often bounced open, so that the control of the closing time of the inertial switch is inaccurate, and the contact reliability of the contact is poor. In addition, in some products, in order to prevent accidental impacts, self-locking is often required to be realized after the switch is closed, so as to ensure the continuity and stability of power connection of the switch and ensure the stable operation of a power supply and a load circuit, but the conventional inertial switch is often difficult to realize, so that the application of the products is limited.
Disclosure of Invention
In order to overcome one or more of the defects or the improvement requirements in the prior art, the invention provides the in-place self-locking inertia switch, wherein the inertia body, the inertia spring, the static electrode, the locking pin and the locking ball are correspondingly arranged in the shell, so that the reliable and stable communication of the inertia switch can be effectively realized, the inertia body can be locked in place by the locking pin and the locking ball after the two static electrodes are communicated by the inertia body, the situation that the inertia body is separated from the static electrodes due to the rebounding of the inertia spring is prevented, and the communication stability of the two static electrodes is fully ensured.
In order to achieve the aim, the invention provides an in-place self-locking inertia switch, which comprises a shell with a containing hole at the bottom, and is characterized in that,
the accommodating hole is a blind hole, an inertial body and an inertial spring are correspondingly arranged in the blind hole, and a first pressing screw is arranged at the opening of the blind hole; meanwhile, a locking hole communicated with the bottom of the accommodating hole is formed in the peripheral wall surface of the shell, and a locking pin and a locking ball are arranged corresponding to the locking hole;
the inertia spring is arranged between the inertia body and the first pressure screw, one end of the inertia spring is matched with the end part of the inertia body, the other end of the inertia spring is abutted against the inner side surface of the first pressure screw, two static electrodes are arranged on the inner side surface of the first pressure screw side by side, and the inertia body can be simultaneously abutted against the two static electrodes by the end surface after the inertia spring is compressed; the inertial body is made of a conductive material, and the static electrode cannot be communicated with the inertial body through the inertial spring;
the locking hole comprises a vertical hole and an inclined hole; the vertical hole is a blind hole with the axis parallel to the axis of the accommodating hole and is formed on the bottom surface of the accommodating hole; one end of the inclined hole is communicated with one side, away from one end of the containing hole, of the vertical hole, the other end of the inclined hole extends to the peripheral wall surface of the shell, and the axis of the inclined hole is intersected with or parallel to the axis of the vertical hole;
one end of the locking pin is fixedly connected with the end part of the inertia body, and the other end of the locking pin extends into the vertical hole and can not be separated from the vertical hole after the inertia body is matched with the static electrode; a second pressing screw is arranged at the opening of the inclined hole, and a plurality of locking balls are accommodated between the second pressing screw and the locking pin; the locking ball can enter the vertical hole from the inclined hole after the inertial body starts to compress the inertial spring so as to fill the vertical hole, and after the inertial body is matched with the static electrode, the top of the locking ball which is farthest from the locking pin in the vertical hole can be abutted against the top wall surface of the vertical hole.
As a further improvement of the invention, the inertia body is of a stepped shaft structure and comprises a first matching section for matching with the inner peripheral wall surface of the accommodating hole and a second matching section for matching with the inertia spring; the two matching sections are coaxially arranged, the outer diameter of the second matching section is smaller than that of the first matching section, and one end of the inertia spring is sleeved on the periphery of the second matching section.
As a further improvement of the present invention, the static electrode vertically faces the end face of the second matching section; and is
One end of the static electrode is a connecting end and is used for connecting the first pressing screw and the lead; the other end of the inertial body is a matching end which is used for matching and abutting against the inertial body, and the matching end is arranged at a certain inclination angle with the horizontal direction.
As a further improvement of the invention, the angle of inclination of the matching end is 15-60 degrees, and/or the angle of deflection of the matching end after the matching end is abutted by the inertial body is 15-30 degrees.
As a further improvement of the invention, a third matching section is axially arranged at one end of the inertial body departing from the first pressing screw, the outer diameter of the third matching section is smaller than that of the first matching section, and a guide hole capable of accommodating the third matching section is formed in the bottom surface of the accommodating hole.
As a further improvement of the invention, the guide hole is a blind hole or a through hole communicated with the peripheral wall surface of the shell.
As a further improvement of the invention, the inertia body is made of tungsten material, and/or the static electrode is made of beryllium bronze material.
As a further improvement of the invention, the outer peripheral wall surface of the inertial body for matching with the containing hole is coated with a solid film protective agent; and/or the inner peripheral wall surface of the containing hole is coated with a solid film protective agent.
As a further improvement of the invention, silver is plated on the end face of the inertial body opposite to the static electrode; and/or plating silver on one side of the static electrode capable of abutting against the inertial body.
As a further improvement of the invention, the axes of the vertical hole and the inclined hole are parallel to each other, the ends of the two holes are communicated in an arc-shaped hole, and the distance between the axes of the two holes is not less than the radius of the vertical hole.
The above-described improved technical features may be combined with each other as long as they do not conflict with each other.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:
(1) according to the in-place self-locking inertia switch, the inertia body, the inertia spring, the static electrode, the locking pin, the locking ball and other components are arranged in the shell, the mutual matching of the components and the corresponding arrangement of the containing hole and the locking hole are utilized, the arrangement of the inertia switch can be effectively realized, the inertia switch can be accurately switched between a non-working state and a working state, the self-locking of the inertia switch in the working state is realized, the communication stability of the two static electrodes is ensured, the reliable and stable working of the inertia switch is realized, and the working stability and the working accuracy of the inertia switch are improved;
(2) according to the in-place self-locking inertia switch, the structure of the locking hole is preferably selected, so that the arrangement form of the locking hole has a larger transformation space, the in-place self-locking inertia switch is suitable for the design of shells with different thickness and sizes, the application requirements of the inertia switch under different environments are met, and the diversity of inertia switch products is also improved;
(3) according to the in-place self-locking inertial switch, the inertial body and the static electrode are more accurately matched by preferably selecting the materials and the arrangement forms of the inertial body and the static electrode, and the interference fit between the static electrode and the inertial body is realized by arranging one end of the static electrode in a compressible deflection form, so that the matching accuracy and reliability of the static electrode and the inertial body can be further improved;
(4) according to the in-place self-locking inertia switch, the solid film protective agent is coated on the periphery of the inertia body and the inner peripheral wall surface of the containing hole, so that the friction force generated when the inertia body moves can be effectively reduced, the starting load of the inertia switch can be accurately controlled by the inertia spring, and the design and control accuracy of the inertia switch is improved;
(5) according to the in-place self-locking inertial switch, the end face of the inertial body, which is opposite to the static electrode, and the end face of the static electrode, which can be matched and abutted with the inertial body, are plated with silver, so that the matching effect of the inertial body and the static electrode can be further improved, and the matching accuracy and reliability of the two static electrodes are ensured;
(6) the in-place self-locking inertia switch is simple in structure and convenient and fast to assemble, can effectively realize matching and communication of the two static electrodes under preset overload, realize accurate work of the inertia switch, can accurately realize in-place self-locking after the inertia body is matched with the static electrodes, ensure that the two static electrodes are always communicated under the working state of the inertia switch, effectively improve the accuracy and reliability of the work of the inertia switch, promote the application of the inertia switch, and have better practical value and application prospect.
Drawings
FIG. 1 is a structural section view of an in-place self-locking inertial switch of an embodiment of the invention when the switch is not in operation;
FIG. 2 is a structural sectional view of the in-place self-locking inertial switch of the embodiment of the invention during operation;
FIG. 3 is a schematic structural diagram of a static electrode of the in-place self-locking inertial switch in the embodiment of the invention;
FIG. 4 is a schematic view of a structure of a capture hole in a housing in embodiment 1 of the present invention;
FIG. 5 is a schematic view of a structure of a capture hole in a housing in embodiment 2 of the present invention;
FIG. 6 is a schematic view of a structure of a capture hole in a housing according to embodiment 3 of the present invention;
FIG. 7 is a schematic view of a structure of a capture hole in a housing according to embodiment 4 of the present invention;
FIG. 8 is a structural section view of the in-place self-locking inertia switch in the embodiment 5 of the invention when not in operation;
FIG. 9 is a schematic view of a structure of a capture hole in a housing according to embodiment 6 of the present invention;
in all the figures, the same reference numerals denote the same features, in particular: 1. the shell comprises a shell body, 101 locking holes, 1011 vertical holes, 1012 inclined holes and 102 accommodating holes; 2. inertia body, 3 inertial spring, 4 locking pin, 5 static electrode, 6 first pressure screw, 7 second pressure screw and 8 locking ball.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Example (b):
referring to fig. 1 and 2, the in-place self-locking inertial switch in the preferred embodiment of the present invention includes a housing 1, an inertial body 2, and an inertial spring 3, wherein one end of the housing 1 is provided with a blind hole, i.e. a containing hole 102, corresponding to the inertial body 2 and having a certain depth, for containing the inertial body 2 and the inertial spring 3.
Specifically, the inertial body 2 in the preferred embodiment has a stepped shaft structure, which is at least a two-segment structure, that is, includes a first matching segment and a second matching segment; the outer diameter of the first matching section is larger than that of the second matching section, an annular step is formed at the junction of the first matching section and the second matching section, the peripheral wall surface of the first matching section is matched with the sliding gap of the inner peripheral wall of the accommodating hole 102, the second matching section is used for matching one end of the inertia spring 3, namely one end of the inertia spring 3 is sleeved on the periphery of the second matching section and is abutted against the annular step. Further, the inertial body 2 is made of an electrically conductive material, more preferably a tungsten material. Of course, besides being sleeved at one end of the inertial body 2, the inertial spring 3 can also be directly abutted against the end face of the inertial body 2, as long as the end face of the inertial body 2 can be abutted against the static electrode 3 after the inertial spring 3 is compressed.
Further, a first press screw 6 is provided corresponding to the opening side of the receiving hole 102, which may be correspondingly fitted at an end of the receiving hole 102, to enclose the inertial body 2 and the inertial spring 3 within the housing 1. Preferably, the first press screw 6 is screw-fitted to the accommodation hole 102, and the first press screw 6 is fitted to the inner peripheral wall surface of the accommodation hole 102 at the outer peripheral wall surface, or the first press screw 6 is covered on the end of the housing 1 and correspondingly fitted to the outer peripheral wall surface of the housing 1.
Furthermore, at least two static electrodes 5, in a preferred embodiment, two static electrodes 5 are arranged side by side on the end surface of the first pressure screw 6 close to the accommodating hole 102, and one end of the inertia spring 3 away from the inertia body 2 is sleeved on the periphery of the static electrodes 5 and then abuts against the end surface of the first pressure screw 6, so that each static electrode 5 is aligned with the end surface of the inertia body 2 in the vertical direction, and due to the elastic force of the inertia spring 3, the inertia body 2 is far away from the static electrodes 5 when not in operation, and the static electrodes 5 are not in contact with each other, so that the two static electrodes 5 cannot be communicated; after the inertia switch is overloaded, the inertia body 2 starts to move along the axial direction, the inertia spring 3 is compressed, the distance between the end part of the second matching section and the static electrode 5 is gradually reduced until the end surface of the second matching section is abutted against the two static electrodes 5, and then the inertia body 2 correspondingly communicates the two static electrodes 5.
More specifically, the static electrode 3 in the preferred embodiment is shown in fig. 5, and is preferably made of beryllium bronze sheet, and has good elasticity and recoverability, and good conductivity. Further, the static electrode 3 comprises a fixed end and a matching end, wherein the fixed end is preferably horizontally arranged and is used for fixing the static electrode 3 on the end face of the first pressing screw 6 and connecting with one pole of the switch; one end of the matching end is connected with the fixed end, and the other end extends upwards in an inclined mode at a certain inclined angle, the inclined angle is preferably 15-60 degrees, and the matching end can be pressed and deformed within the angle range of 15-30 degrees. When the inertial body 2 abuts against the static electrodes 5, the end part of the matching end is firstly abutted, and along with the continuous movement of the inertial body 2, the matching end can be pressed downwards until most of the matching end is parallel to and abutted against the end surface of the inertial body 2, as shown in fig. 2, at this time, the inertial body 2 and the two static electrodes 5 are respectively abutted in a matching manner, and the two static electrodes 5 are correspondingly communicated.
Further, in the preferred embodiment, a locking assembly is further provided corresponding to the inertial body 2, and comprises a locking pin 4 and a locking ball 8, and a locking hole 101 is opened on the housing 1 corresponding to the locking pin and the locking ball. Specifically, the capture hole 101 in the preferred embodiment is composed of a vertical hole 1011 and an inclined hole 1012, and the locking pin 4 is preferably in a rod-like structure arranged along the axial direction, one end of the locking pin is fixedly connected to the end of the inertial body 2 away from the inertial spring 3, and the other end of the locking pin correspondingly extends into the vertical hole 1011, and the axis of the vertical hole is parallel to the axis of the accommodating hole 102, that is, the axis of the inertial body 2.
Furthermore, one end of the inclined hole is correspondingly connected to one end of the vertical hole 1011 away from the inertia spring 3, wherein a plurality of locking balls 8 are correspondingly accommodated, and in the preferred embodiment, the locking balls 8 are steel balls, and are not sequentially arranged in parallel. To prevent the capture ball 9 from blocking the capture hole 101, the outer diameter of the capture ball 8 in the preferred embodiment is equal to or slightly smaller than the inner diameter of the capture hole 101, i.e. the capture ball 8 cannot be misplaced side by side in the capture hole 101. More specifically, when the inertial switch is not operated, one end of the inertial body 2, from which the locking pin 4 extends, is accommodated in the vertical hole 1011, and the inclined hole 1012 is accommodated with a plurality of locking balls 8; when the inertia switch starts to work and moves to the right, the locking pin 4 moves to the direction close to the first pressing screw 6, and the end part of the locking pin does not disengage from the vertical hole 1011 at all times, and the locking ball 8 in the inclined hole 1012 preferably falls into the vertical hole 1011 completely. If the overload disappears or is reduced, the inertial body 2 has the tendency of returning driven by the inertial spring 3; at the moment, the locking pin 4 is correspondingly abutted against each locking ball 8 in the vertical hole 1011, and the locking ball 8 which is farthest away from the locking pin 4 is correspondingly abutted against the wall surface of the end part of the vertical hole 1011 and cannot enter the inclined hole 1012, so that the inertial body 2 is locked and limited, the rebound resetting of the inertial body is prevented, and the in-place self-locking of the inertial switch is realized.
Further specifically, in order to achieve a stable abutment of the capture ball 8 in the vertical hole 1011, the abutment of the vertical hole 1011 and the inclined hole 1012 in the preferred embodiment is specially designed to ensure that the capture ball 8 facing away from the locking pin 4 is mainly subjected to forces in the axial direction of the vertical hole 1011 when tightened. Specifically, as shown in fig. 4 to 7, four forms of the capture hole 101 in embodiments 1 to 4 are provided, in which the tops (in the orientation shown in the figure) of the vertical holes 1011 in the first three forms are respectively provided as circular arc-shaped wall surfaces matching the outer periphery of the capture ball 8, and the top of the capture ball 8 can correspondingly abut against the circular arc-shaped wall surfaces; with the fourth form as shown in fig. 7, in which the top of the vertical hole 1011 is provided as a horizontal wall surface and the top of the capture ball 8 abuts against the horizontal wall surface, the capture ball 8 is subjected to only a pressing force in the vertical direction and a frictional force direction thereof is parallel to the horizontal direction, and the capture ball 8 is not easily detached from the vertical hole 1011 by a tangential force and enters the inclined hole 1012. In short, the inclined hole 1012 is provided on one side of the end of the vertical hole 1011, and the top of the vertical hole 1011 is formed with a wall surface that can abut the top of the capture ball 8.
Preferably, the number of the locking balls 8 arranged in the inclined hole 1012 is greater than the number of the locking balls 8 which can be accommodated in the vertical hole 1011 after the inertial body 2 moves to the position, that is, a plurality of locking balls 8 are also arranged in the inclined hole 1012. With such an arrangement, the locking balls 8 at the top of the vertical hole 1011 can abut against the wall surface at the top of the vertical hole 1011, and one side of the locking balls close to the inclined hole 1012 can be abutted by the locking balls 8, so as to sufficiently prevent the locking pin 4 from returning. Of course, at the end of the capture hole 101, a second press screw 7 is correspondingly provided to enclose the capture ball 8 in the capture hole 101.
Of course, the inclined hole 1012 of the locking hole 101 in the inertia switch may extend upward at a certain inclination angle after one end thereof is connected to the end of the vertical hole 1011. In the preferred embodiment 5, it can also extend downward at an oblique angle as shown in fig. 8, and after the second press screw 7 is disposed at the end of the oblique hole 1012, a spring member is disposed between the capture ball 8 adjacent to the second press screw 7 and the second press screw 7, and when the inertia switch is not operated, the spring member is compressed, and the capture ball 8 is mostly received in the oblique hole 1012; when the inertia body 2 moves under the action of overload, the locking pin 4 moves along the axial direction, at the moment, the locking ball 8 in the inclined hole 1012 is driven into the vertical hole 1011 by the spring part, when the inertia body 2 wants to reset, the locking ball 8 at the topmost part of the vertical hole 1011 abuts against the wall surface at the top part of the vertical hole 1011 at the top part, and the locking pin 4 is limited, namely the locking of the inertia body 2 is realized.
In addition, in preferred embodiment 6, the axis of the inclined hole 1012 is parallel to the axis of the vertical hole 1011, that is, the inclined angle of the inclined hole 1012 relative to the vertical hole 1011 is 0 °, and the inclined hole 1012 and the vertical hole 1011 are arranged in a staggered manner, and the ends of the inclined hole 1012 and the vertical hole are correspondingly communicated through a section of arc-shaped hole, so that the passing of the locking ball 8 is facilitated, and thus, the locking of the locking ball 8 to the positioning pin 4 and the inertial body 2 can be correspondingly realized. Thus, in a preferred embodiment, the axis of the angled hole 1012 may intersect or be parallel to the axis of the vertical hole 1011; when intersecting, the included angle of the axes is preferably 5-150 degrees; when parallel to each other, the distance between the two axes is not less than the radius of the vertical hole.
Further preferably, a third matching section is axially arranged on an end surface of the inertial body 2 facing away from the inertial spring 3, and a matching hole with a certain depth is axially formed at the bottom of the accommodating hole 102 corresponding to the third matching section, and the matching hole may be a blind hole or a through hole, and the third matching section is correspondingly embedded in the matching hole, and can be used for guiding the motion of the inertial body 2 and preventing the inertial body 2 from rotating. Meanwhile, in order to improve the contact reliability of the inertial body 2 and the static electrode 3, silver plating is carried out on the end face of the inertial body 2, which is just opposite to the static electrode 3, and/or silver plating is carried out on the end face of the static electrode 3, which is contacted with the inertial body 2. In order to reduce the frictional force between the inertial body 2 and the housing 1, a solid film protective agent, more preferably a DJB-823 solid film protective agent, is applied to the outer peripheral wall surface of the inertial body 2 and the inner peripheral wall surface of the housing hole 102.
In summary, the in-place self-locking inertial switch in the preferred embodiment of the present invention can be obtained, when not in operation, one side of the inertial body 2 away from the inertial spring 3 abuts against the bottom of the accommodating hole 102, the end of the inertial body 2 matching with the inertial spring 3 is away from the two static electrodes 5, that is, the two static electrodes 5 are disconnected, and at this time, one end of the locking pin 4 is accommodated in the vertical hole 1011, and most of the locking ball 8 is accommodated in the inclined hole 1012; when the inertia switch is overloaded, the inertia body 2 moves in the direction close to the first pressure screw 6 along the axial direction and compresses the inertia spring 3, and then the end face of the inertia body 2 abuts against the two static electrodes 5, so that the two static electrodes 5 are correspondingly communicated; meanwhile, as the locking pin 4 is pulled out of the vertical hole 1011 by a certain length, the locking balls 8 in the inclined hole 1012 fall into the vertical hole 1011 and fill the top of the vertical hole 1011, so that once the inertial body 2 wants to reset under the action of the inertial spring 3, the locking balls 8 in the vertical hole 1011 can be tightly propped by the locking pin 4, thereby locking the inertial body 2 at the position contacted with the static electrode 5, realizing in-place self-locking and ensuring the communication of the inertial switch.
The in-place self-locking inertia switch has a simple structure, is convenient and fast to assemble, and can effectively realize corresponding communication when the inertia switch bears overload by correspondingly arranging the inertia body, the inertia spring and the static electrode in the shell; and through the arrangement of the locking pin, the locking ball and other components and the corresponding arrangement of the locking hole, the self-locking of the inertial body after the motion is in place is effectively realized, the reset of the inertial body caused by the weakening of overload or the disappearance of overload is avoided, the inertial switch is ensured to be always in a communicated state, the working accuracy and reliability of the inertial switch are ensured, the application stability of the inertial switch is improved, the application of the inertial switch is promoted, and the practical value and the popularization value are better.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. An in-place self-locking inertia switch comprises a shell with a containing hole at the bottom, and is characterized in that,
the accommodating hole is a blind hole, an inertial body and an inertial spring are correspondingly arranged in the blind hole, and a first pressing screw is arranged at the opening of the blind hole; meanwhile, a locking hole communicated with the bottom of the accommodating hole is formed in the peripheral wall surface of the shell, and a locking pin and a locking ball are arranged corresponding to the locking hole;
the inertia spring is arranged between the inertia body and the first pressure screw, one end of the inertia spring is matched with the end part of the inertia body, the other end of the inertia spring is abutted against the inner side surface of the first pressure screw, two static electrodes are arranged on the inner side surface of the first pressure screw side by side, and the inertia body can be simultaneously abutted against the two static electrodes by the end surface after the inertia spring is compressed; the inertial body is made of a conductive material, and the static electrode cannot be communicated with the inertial body through the inertial spring;
the locking hole comprises a vertical hole and an inclined hole; the vertical hole is a blind hole with the axis parallel to the axis of the accommodating hole and is formed on the bottom surface of the accommodating hole; one end of the inclined hole is communicated with one side, away from one end of the containing hole, of the vertical hole, the other end of the inclined hole extends to the peripheral wall surface of the shell, and the axis of the inclined hole is intersected with or parallel to the axis of the vertical hole;
one end of the locking pin is fixedly connected with the end part of the inertia body, and the other end of the locking pin extends into the vertical hole and can not be separated from the vertical hole after the inertia body is matched with the static electrode; a second pressing screw is arranged at the opening of the inclined hole, and a plurality of locking balls are accommodated between the second pressing screw and the locking pin; the locking ball can enter the vertical hole from the inclined hole after the inertial body starts to compress the inertial spring so as to fill the vertical hole, and after the inertial body is matched with the static electrode, the top of the locking ball which is farthest from the locking pin in the vertical hole can be abutted against the top wall surface of the vertical hole.
2. The in-place self-locking inertial switch of claim 1, wherein the inertial body is a stepped shaft structure comprising a first matching section for matching with the inner peripheral wall surface of the accommodating hole and a second matching section for matching with the inertial spring; the two matching sections are coaxially arranged, the outer diameter of the second matching section is smaller than that of the first matching section, and one end of the inertia spring is sleeved on the periphery of the second matching section.
3. The in-place self-locking inertial switch of claim 2, wherein the static electrode vertically faces the end face of the second matching section; and is
One end of the static electrode is a connecting end and is used for connecting the first pressing screw and the lead; the other end of the inertial body is a matching end which is used for matching and abutting against the inertial body, and the matching end is arranged at a certain inclination angle with the horizontal direction.
4. An in-place self-locking inertial switch according to claim 3, wherein the angle of inclination of the mating end is between 15 ° and 60 ° and/or the angle of deflection of the mating end after abutment by the inertial body is between 15 ° and 30 °.
5. An in-place self-locking inertia switch according to any one of claims 2 to 4, wherein a third matching section is axially arranged at one end of the inertia body away from the first pressing screw, the outer diameter of the third matching section is smaller than that of the first matching section, and a guide hole for accommodating the third matching section is formed in the bottom surface of the accommodating hole.
6. The in-place self-locking inertia switch of claim 5, wherein the guide hole is a blind hole or a through hole communicating with the outer peripheral wall surface of the housing.
7. An in-place self-locking inertial switch according to any one of claims 1 to 6, wherein the inertial body is made of a tungsten material and/or the static electrode is made of a beryllium bronze material.
8. The in-place self-locking inertial switch according to any one of claims 1 to 7, wherein the inertial body is coated with a solid film protective agent on the outer peripheral wall surface matched with the containing hole; and/or the inner peripheral wall surface of the containing hole is coated with a solid film protective agent.
9. An in-place self-locking inertial switch according to any one of claims 1 to 8, wherein silver is plated on the end face of the inertial body facing the static electrode; and/or plating silver on one side of the static electrode capable of abutting against the inertial body.
10. An in-place self-locking inertial switch according to any one of claims 1 to 9, wherein the axes of the vertical hole and the inclined hole are parallel to each other, the ends of the two holes are communicated with each other through an arc-shaped hole, and the distance between the axes of the two holes is not less than the radius of the vertical hole.
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| CN201911175240.4A CN110993432B (en) | 2019-11-26 | 2019-11-26 | In-place self-locking inertia switch |
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| CN201911175240.4A CN110993432B (en) | 2019-11-26 | 2019-11-26 | In-place self-locking inertia switch |
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| CN110993432A true CN110993432A (en) | 2020-04-10 |
| CN110993432B CN110993432B (en) | 2021-10-01 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206210664U (en) * | 2016-11-17 | 2017-05-31 | 商洛市虎之翼科技有限公司 | Self-lock switch |
| CN207183161U (en) * | 2017-07-19 | 2018-04-03 | 贵州航天风华精密设备有限公司 | A kind of mechanical self-latching type acceleration switch |
| CN108597951A (en) * | 2018-06-01 | 2018-09-28 | 孝感锐创机械科技有限公司 | A kind of electromagnet inertia constraint multi-channel switch |
| CN208352196U (en) * | 2018-04-26 | 2019-01-08 | 孝感锐创机械科技有限公司 | A kind of overload change-over switch |
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2019
- 2019-11-26 CN CN201911175240.4A patent/CN110993432B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206210664U (en) * | 2016-11-17 | 2017-05-31 | 商洛市虎之翼科技有限公司 | Self-lock switch |
| CN207183161U (en) * | 2017-07-19 | 2018-04-03 | 贵州航天风华精密设备有限公司 | A kind of mechanical self-latching type acceleration switch |
| CN208352196U (en) * | 2018-04-26 | 2019-01-08 | 孝感锐创机械科技有限公司 | A kind of overload change-over switch |
| CN108597951A (en) * | 2018-06-01 | 2018-09-28 | 孝感锐创机械科技有限公司 | A kind of electromagnet inertia constraint multi-channel switch |
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| CN110993432B (en) | 2021-10-01 |
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