Overload-activated in-position self-locking switch and centrifugal test power supply device thereof

Abstract

The present invention discloses an overload-activated in-place self-locking switch and a power supply device for centrifugal testing including the same. The in-place self-locking switch realizes switch closure when sensing a predetermined overload, and can be reliably locked after closure to prevent the inertial body from separating from two static electrodes when the inertial overload disappears, causing the in-place self-locking switch to be disconnected. The in-place self-locking switch is used to realize reliable power supply control of a rechargeable lithium battery component. The present invention has the advantages of simple structure, reliable locking of the in-place self-locking switch after it moves into position, and stable power supply.

Description

Technical Field

[0001] The invention belongs to the technical field of test devices, and in particular relates to an overload-activated in-position self-locking switch and a power supply device for centrifugal testing including the same, which can output electric energy after reaching a predetermined overload. Background Art

[0002] When conducting ground centrifugal tests on electromechanical products, it is often necessary to simulate the centrifugal overload and start the power supply only when it reaches a certain overload value. Currently, there is no corresponding ground equipment that meets this requirement.

[0003] Although it can be achieved through an external power supply and an inertia switch in theory, the existing inertia switch mainly uses the inertia particle to move into place to change the switch from off to on. However, the main defect of the existing inertia switch is that it cannot be reliably locked after being in place. When the inertia disappears or weakens, the inertia particle will return to its original position, resulting in unreliable contact of the inertia switch.

[0004] Moreover, the external power supply and inertia switch are quite different from those of general electromechanical products in terms of structure, and cannot well simulate the actual power supply characteristics of electromechanical products. Summary of the invention

[0005] In response to at least one of the above defects or improvement needs in the prior art, the present invention provides an overload-activated self-locking switch and a power supply device for centrifugal testing including the same, which utilizes a mass block to achieve connection and locking in place to ensure reliable power supply. It has the advantages of simple structure, reliable locking of the self-locking switch after it moves into place, and stable power supply.

[0006] To achieve the above object, according to one aspect of the present invention, there is provided an overload-activated in-position self-locking switch, wherein: the in-position self-locking switch comprises a switch body and a limit spring, an inertial contact body and a touch level integrally arranged in sequence therein, and a driving spring and a steel ball integrally arranged in the inertial contact body;

[0007] In the initial state, the resistance of the limit spring isolates the inertial contact body and the touch level from each other, and the drive spring and the steel ball are enclosed between the front end of the inertial contact body and the rear end of the switch body;

[0008] Under inertial overload, the inertial contact body moves to compress the limit spring and contact the front end to turn on the switch, while the driving spring pushes the steel ball and falls into the gap formed by the rear end of the inertial contact body and the rear end of the switch body under the action of gravity, forming a self-locking limit for the recovery of the inertial contact body.

[0009] Further preferably, the inertial contact body is a U-shaped groove structure, and an outer flange is provided on the opening edge of the groove body;

[0010] The limit spring is sleeved on the outer periphery of the slot body, one end of the limit spring abuts against the outer flange, and the other end abuts against the front end of the switch body.

[0011] Further preferably, a driving spring and a steel ball are sequentially arranged in the groove body of the inertial contact body from the groove bottom to the opening direction.

[0012] Further preferably, the contact level comprises at least a pair of arc-shaped spring pieces, each of which is connected to a wire at the bottom to form two levels of the switch.

[0013] Further preferably, the pair of arc-shaped spring sheets are arranged to be isolated from each other.

[0014] Further preferably, after the inertial overload steel ball falls into the slot, the drive spring contacts the rear end of the switch body, and the side of the drive spring contacts the steel ball to prevent it from resetting.

[0015] Further preferably, after the inertial overload is reduced or disappears, the limit spring pushes the rear end of the inertial contact body and the rear end of the switch body to clamp the steel ball in the clamping gap.

[0016] Further preferably, the inertial contact body is clearance-matched with the switch body.

[0017] Further preferably, the bottom surface of the inertial contact body facing the contact level is silver-plated.

[0018] To achieve the above object, according to another aspect of the present invention, there is also provided a power supply device for centrifugal testing, which includes: the overload-activated in-place self-locking switch, a battery component and a body;

[0019] The body has a cavity inside for accommodating an in-place self-locking switch and a battery component; the in-place self-locking switch is a power supply switch for the battery component, which is in a power-off state in an initial state; under inertial overload, the in-place self-locking switch is turned on, and the battery component is powered; after the inertial overload is reduced or disappears, the in-place self-locking switch self-locks and remains turned on, and the battery component continues to power supply.

[0020] The above-mentioned preferred technical features can be combined with each other as long as they do not conflict with each other.

[0021] In general, the above technical solution conceived by the present invention has the following beneficial effects compared with the prior art:

[0022] 1. The overload-activated in-position self-locking switch of the present invention and the power supply device for centrifugal testing including the same utilize a mass block to achieve in-position connection and locking, thereby ensuring reliable power supply. The switch has the advantages of simple structure, reliable locking after the in-position self-locking switch moves into position, and stable power supply.

[0023] 2. The overload-activated in-place self-locking switch of the present invention and the centrifugal test power supply device including the in-place self-locking switch can realize switch closure when sensing a predetermined overload, and can be reliably locked after closure to prevent the inertial body from separating from the two static electrodes when the inertial overload disappears, causing the in-place self-locking switch to be disconnected. The in-place self-locking switch can realize reliable power supply control for the rechargeable lithium battery component.

[0024] 3. The overload-activated in-place self-locking switch of the present invention does not need to be reinstalled when the power supply is to be released. The in-place self-locking switch can be restored to its original state through simple operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a cross-sectional view of the overall structure along the AA line of the present invention;

[0026] Figure 2 It is a front view of the present invention;

[0027] Figure 3 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 4 It is a cross-sectional view of the structure of the initial disconnected state of the in-position self-locking switch of the present invention;

[0029] Figure 5 It is a cross-sectional view of the structure of the in-position self-locking switch of the present invention in the in-position conducting state;

[0030] Figure 6 It is a structural diagram of the inertial contact body and two arc-shaped spring pieces of the present invention. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as they do not conflict with each other. The present invention is further described in detail below in conjunction with specific embodiments.

[0032] As a preferred embodiment of the present invention, Figure 1-6 As shown, the present invention provides an overload-activated in-position self-locking switch, wherein: the in-position self-locking switch 1 comprises a switch body 1-6 and a limit spring 1-3 coaxially sleeved therein, an inertial contact body 1-1 and a touch level as a whole, and a driving spring 1-5 and a steel ball 1-4 as a whole in the inertial contact body 1-1;

[0033] In the initial state, the resistance of the limit spring 1-3 isolates the inertial contact body 1-1 from the contact stage, and the drive spring 1-5 and the steel ball 1-4 are enclosed between the front end of the inertial contact body 1-1 and the rear end of the switch body 1-6;

[0034] Under inertial overload, the inertial contact body 1-1 moves to compress the limit spring 1-3 and contacts the front end to turn on the switch, while the driving spring 1-5 pushes the steel ball 1-4 and falls into the gap formed by the rear end of the inertial contact body 1-1 and the rear end of the switch body 1-6 under the action of gravity, forming a self-locking limit for the recovery of the inertial contact body 1-1.

[0035] like Figure 4-6 As shown, further preferably, the inertial contact body 1-1 is placed in the switch body 1-6, is made of a metal conductor material, has a U-shaped groove structure, and an outer flange is provided at the opening edge of the groove body, such as Figure 4 The structure shown is a stepped large cylindrical structure with a blind hole inside. A driving spring 1-5 and a steel ball 1-4 are arranged in sequence in the slot body from the slot bottom to the opening direction. The limit spring 1-3 is nested in the outer periphery of the small cylindrical slot body, with one end abutting against the outer flange and the other end abutting against the front end of the switch body 1-6. The inner circle of the outer flange is provided with a slope toward the slot bottom, and the distance from the upper end of the slope to the inner surface of the switch body is greater than the radius of the steel ball and less than the diameter of the steel ball.

[0036] like Figure 4-6 As shown, further preferably, the contact level includes at least two arc-shaped spring pieces 1-2, and the two arc-shaped spring pieces 1-2 are both strip-shaped beryllium bronze sheets with a certain bending angle at one end, and are inlaid and fixed on the upper end of the pressure screw 1-7 separated from each other, and the two arc-shaped spring pieces 1-2 are within the circumference of the limit spring 1-3 and do not contact the limit spring 1-3. The bending angle of the two arc-shaped spring pieces 1-2 is 15° to 30°, and the bottom of each arc-shaped spring piece 1-2 is connected to a wire to constitute the two poles of the switch.

[0037] Further preferably, after the inertial overload steel ball 1-4 falls into the slot, the drive spring 1-5 contacts the rear end of the switch body 1-6, and the side of the drive spring 1-5 contacts the steel ball 1-4 to prevent it from resetting.

[0038] Further preferably, after the inertial overload is reduced or disappears, the limit spring 1-3 pushes the rear end of the inertial contact body 1-1 and the rear end of the switch body 1-6 to clamp the steel ball 1-4 in the clamping gap.

[0039] Further preferably, the switch body 1-6 has a cavity inside for accommodating the inertial contact body 1-1, the limit spring 1-3, the steel ball 1-4 and the drive spring 1-5. The front end of the cavity is closed with a pressing screw 1-7, and the rear end bottom of the cavity also has a coaxial limit and reset hole. When the steel ball 1-4 is assembled, the limit and reset hole plays a role of limiting and fixing the installed steel ball 1-4; when the steel ball needs to be reset from the card gap, a rod is extended inward from the outside of the limit and reset hole to push the drive spring back, and the steel ball slides back into the groove body after the upright switch body or shaking. After the rod is pulled out, the limit spring, the inertial contact body, the drive spring and the steel ball are reset, and the steel ball is positioned in the limit and reset hole again. The self-locking switch in place can release the power supply again without the need for re-disassembly.

[0040] Further preferably, the inertial contact body 1 - 1 is clearance-matched with the switch body 1 - 6 , and in the cavity of the switch body 1 - 6 where the inertial contact body 1 - 1 has been installed, the inertial contact body 1 - 1 can slide freely under the action of gravity.

[0041] Further preferably, the bottom surface of the inertial contact body 1 - 1 facing the contact level is silver-plated.

[0042] Further preferably, the two arc-shaped spring pieces 1-2 are separated from each other, and the bent ends extend out of the outer end surface of the pressing screw 1-7 by a distance of 1.5 mm to 3 mm.

[0043] Further preferably, the direction in which the inertial contact body 1 - 1 points to the two arc-shaped spring pieces 1 - 2 is opposite to the direction in which the centrifugal force points to the center of the circle.

[0044] like Figure 4-5 As shown, the inertial contact body 1-1 is usually constrained by the limit spring 1-3, so that the inertial contact body 1-1 and the two arc-shaped spring pieces 1-2 are isolated from each other. At this time, the in-place self-locking switch 1 is in the disconnected state, and the steel ball 1-4 and the driving spring 1-5 are subjected to the resistance of the limit spring 1-3 and are enclosed in the blind hole of the inertial contact body 1-1. When the inertial contact body 1-1 feels the centrifugal overload, the inertial contact body 1-1 squeezes the limit spring 1-3 to move toward the two arc-shaped spring pieces 1-2 until the inertial contact The body 1-1 contacts with two arc-shaped spring pieces 1-2. At the same time, after the inertial contact body 1-1 squeezes the limit spring 1-3 to move, the driving spring 1-5 in a compressed state pushes the steel ball 1-4 to move in the opposite direction of the inertial contact body 1-1 under the action of the restoring resistance. After the steel ball 1-4 separates from the inertial contact body 1-1, it falls into the switch body 1-6 under the action of gravity, which limits the inertial contact body 1-1 from returning to its original position, ensuring the reliable closure of the inertial contact body 1-1 and the two arc-shaped spring pieces 1-2.

[0045] like Figure 1-6 As shown, a power supply device for centrifugal testing is also provided, which includes the overload-activated in-place self-locking switch 1, a battery component 2, a body 3 and a pressure cover 4.

[0046] The body 3 and the pressure cover 4 are both made of non-metallic non-conductive materials, and the body 3 has a cavity inside to accommodate the self-locking switch 1 and the battery component 2; the self-locking switch 1 is the power supply switch of the battery component 2, and is in the power-off state in the initial state; under inertial overload, the self-locking switch 1 is turned on, and the battery component 2 is powered; after the inertial overload is reduced or disappears, the self-locking switch 1 is self-locked and remains turned on, and the battery component 2 continues to be powered.

[0047] Further preferably, the battery component is a rechargeable lithium battery firmware.

[0048] The working principle method of the present invention is:

[0049] Normally, the two arc-shaped spring pieces are both strip-shaped beryllium bronze sheets with a certain bending angle at one end. They are inlaid and fixed on the upper end of the pressure screw, separated from each other, and the two arc-shaped spring pieces are within the circumference of the limit spring and do not contact the limit spring. The bending angle of the two arc-shaped spring pieces is 15°~30°. The bottom of each arc-shaped spring piece is connected to a wire to form the two poles of the switch. The switch body and the pressure screw are both non-conductive non-metallic materials. At this time, the switch is in the off state.

[0050] When the inertial contact body senses the centrifugal acceleration overload, the inertial contact body overcomes the resistance of the limit spring and moves toward the two arc-shaped springs until the inertial contact body contacts the two arc-shaped springs. At the same time, after the inertial contact body squeezes the limit spring and moves, the driving spring in the compressed state pushes the steel ball to move in the opposite direction of the inertial contact body under the action of the recovery resistance. After the steel ball leaves the inertial contact body, it falls into the switch body under the action of gravity, limiting the inertial contact body from returning to its original position and ensuring the reliable closure of the inertial contact body and the two arc-shaped springs. At this time, the switch changes from the off state to the on state. Even if the centrifugal overload disappears, the inertial contact body cannot return to its original position.

[0051] In summary, compared with the prior art, the solution of the present invention has the following significant advantages:

[0052] The overload-activated in-position self-locking switch of the present invention and the power supply device for centrifugal testing including the same utilize a mass block to achieve in-position connection and locking to ensure reliable power supply. It has the advantages of simple structure, reliable locking of the in-position self-locking switch after movement into position, and stable power supply.

[0053] The overload-activated in-place self-locking switch of the present invention and the centrifugal test power supply device including the in-place self-locking switch can realize switch closing when sensing a predetermined overload, and can be reliably locked after closing, so as to prevent the inertial body from separating from the two static electrodes when the inertial overload disappears, causing the in-place self-locking switch to be disconnected. The in-place self-locking switch can realize reliable power supply control for the rechargeable lithium battery component.

[0054] The overload-activated in-place self-locking switch of the present invention does not need to be reinstalled when power is released, and the in-place self-locking switch can be restored to its original state through simple operations.

[0055] It is to be understood that the embodiments of the system described above are merely illustrative, and the units described as separate components may or may not be physically separated, and may be located in one place, or may be distributed on different network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art may understand and implement the solution without creative effort.

[0056] In addition, it should be understood by those skilled in the art that, in the application documents of the embodiments of the present invention, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0057] In the description of the embodiment of the present invention, a large number of specific details are described. However, it should be understood that the embodiment of the embodiment of the present invention can be practiced without these specific details. In some examples, known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification. Similarly, it should be understood that in order to streamline the disclosure of the embodiment of the present invention and help understand one or more of the various inventive aspects, in the above description of the exemplary embodiments of the embodiment of the present invention, the various features of the embodiment of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof.

[0058] This method of disclosure, however, is not to be interpreted as reflecting an intention that the claimed embodiments of the invention require more features than are expressly recited in each claim. Rather, as the claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the Detailed Description are hereby expressly incorporated into this Detailed Description, with each claim standing on its own as a separate embodiment of an embodiment of the invention.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, rather than to limit them. Although the embodiments of the present invention have been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the embodiments of the present invention.

Claims

1. An overload-activated in-position self-locking switch, characterized in that: The in-position self-locking switch comprises a switch body and a limit spring, an inertial contact body and a touch level integrally arranged in sequence inside the switch body, and a driving spring and a steel ball integrally arranged inside the inertial contact body; The inertial contact body is a U-shaped groove structure, and an outer flange is provided at the opening edge of the groove body; The limit spring is sleeved on the outer periphery of the slot body, one end of the limit spring abuts against the outer flange, and the other end abuts against the front end of the switch body; A driving spring and a steel ball are arranged in sequence in the groove body of the inertial contact body from the groove bottom to the opening direction; In the initial state, the resistance of the limit spring isolates the inertial contact body and the touch level from each other, and the drive spring and the steel ball are enclosed between the front end of the inertial contact body and the rear end of the switch body; Under inertial overload, the inertial contact body moves to compress the limit spring and contact the front end to turn on the switch, while the driving spring pushes the steel ball and falls into the gap formed by the rear end of the inertial contact body and the rear end of the switch body under the action of gravity, forming a self-locking limit for the recovery of the inertial contact body.

2. The overload-activated in-position self-locking switch according to claim 1, characterized in that: The contact level at least comprises a pair of arc-shaped spring pieces, each of which is connected to a wire at the bottom to form two levels of the switch.

3. The overload-activated in-position self-locking switch according to claim 2, characterized in that: The pair of arc-shaped spring sheets are arranged isolated from each other.

4. The overload-activated in-position self-locking switch according to claim 1, characterized in that: After the inertial overload steel ball falls into the clamping gap, the driving spring contacts the rear end of the switch body, and the side of the driving spring contacts the steel ball to prevent it from resetting.

5. The overload-activated in-position self-locking switch according to claim 1, characterized in that: After the inertial overload is reduced or disappears, the limit spring pushes the rear end of the inertial contact body and the rear end of the switch body to clamp the steel ball in the clamping gap.

6. The overload-activated in-position self-locking switch according to claim 1, characterized in that: The inertia contact body is clearance-matched with the switch body.

7. The overload-activated in-position self-locking switch according to claim 1, characterized in that: The bottom surface of the inertial contact body facing the contact level is silver-plated.

8. A power supply device for centrifugal testing, characterized in that: It comprises the overload-activated in-position self-locking switch, a battery component and a body according to any one of claims 1 to 7; The body has a cavity inside for accommodating an in-place self-locking switch and a battery component; the in-place self-locking switch is a power supply switch for the battery component, which is in a power-off state in an initial state; under inertial overload, the in-place self-locking switch is turned on, and the battery component is powered; after the inertial overload is reduced or disappears, the in-place self-locking switch self-locks and remains turned on, and the battery component continues to power supply.

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