Double-stroke long-delay change-over switch

Abstract

The invention discloses a double-stroke long-time-delay change-over switch, which belongs to the technical field of inertia switches and comprises a switch body, accommodating holes and moving parts are arranged on the switch body in pairs, and inertia cylinders, cylinder springs, gear parts and racks in the moving parts are combined, so that the inertia cylinders, the cylinder springs, the gear parts and the racks are arranged in pairs. The movement of the inertia cylinder under the overload is accompanied by the meshing movement of the gear piece and the rack, so that the movement time of the moving part under the overload is prolonged; and through the setting of starting overload of the two moving parts, the compression amount of the barrel spring and the ball pin, the successive movement of the two moving parts can be accurately realized, and the double-stroke design is realized. The change-over switch is compact in structure and convenient to use, the state switching requirement of the overload switch under the long-time continuous overload effect can be effectively met, and the state locking requirement of the overload switch under the short-time overload effect or the instantaneous overload effect can be effectively met; the use reliability and stability of the change-over switch under set requirements are ensured, and the change-over switch has good practical value.

Description

Technical Field

[0001] The invention belongs to the technical field of inertia switches, and in particular relates to a double-stroke long-delay conversion switch. Background Art

[0002] During the operation of spacecraft and aircraft, they usually experience overload environments, such as takeoff and landing. In view of the existence of overload environments, overload switches (also called inertia switches) can be designed to complete the execution of special control processes under overload environments.

[0003] At present, most common inertial switches are designed by combining an inertial part with an elastic part such as a spring, and the corresponding state switching process is completed by compressing the elastic part under an overload environment. For example, in the applicant's prior patent application CN204558356U, an inertial switch is provided, which uses a spring and an insulating sheet to separate and disconnect the two poles when not working, and in an overload environment, the reaction force or forward inertial force compresses the spring of the inertial switch, so that the two poles are in contact and conductive.

[0004] Although existing inertial switches can meet the needs of practical applications to a certain extent, they generally have the following disadvantages: when the inertial switch senses a long-term overload environment or a short-term large overload impact, it will change from an off state to a conducting state. However, in actual applications, the working requirements of inertial switches often vary. There are also inertial switches that are only allowed to work under long-term overloads. Such inertial switches also have the risk of "turning on under a short-term large overload impact", causing accidents of false triggering and affecting the normal application of the inertial switch. Summary of the invention

[0005] In response to one or more of the above defects or improvement needs in the prior art, the present invention provides a dual-stroke long-delay transfer switch, which can effectively meet the conduction requirements of the inertial switch under a long-term overload environment, and effectively avoid false triggering caused by short-term large overload shocks, thereby ensuring the accuracy and reliability of the transfer switch application.

[0006] To achieve the above object, the present invention provides a double-stroke long-delay transfer switch, comprising a switch body, wherein a first accommodating hole and a second accommodating hole are provided on the switch body, and a guide hole is provided on a side surface of the switch body corresponding to each accommodating hole and passes through the accommodating hole along the axial direction, and a limit hole is provided that passes through the two accommodating holes; A first moving component is provided corresponding to the first accommodating hole, a second moving component is provided corresponding to the second accommodating hole, and a ball pin is provided in the limiting hole; a gland is provided at the end of the first accommodating hole, and two conductive components spaced apart from each other are protruded on the inner circumferential wall surface of the second accommodating hole near the end; Both moving parts include an inertia cylinder, a cylinder spring, a gear and a rack; the inertia cylinder and the cylinder spring are embedded in corresponding accommodating holes, the two are assembled at their ends, and one end of the cylinder spring away from the inertia cylinder is limited in the corresponding accommodating hole; the gear is arranged on the outside of the switch body, and is coaxially rotatably connected with a rotating shaft passing through the corresponding guide hole, and one end of the rotating shaft away from the gear is connected to the outer wall surface of the corresponding inertia cylinder; the rack is arranged on one side of the corresponding limiting hole and extends along the axial direction of the limiting hole, and the rack is meshed with the corresponding gear; The two inertia cylinders each include a cylindrical portion and a conical portion, the conical portion is arranged at one end of the inertia cylinder away from the cylinder spring, and a conical hole is opened on the outer periphery of the cylindrical portion of the second moving component; When the conversion switch is not overloaded, the two tube springs are in a compressed state, and one end of the ball pin is pressed against the outer periphery of the cylindrical portion of the first moving component, and the other end is embedded in the conical hole, so that the conical portion of the second moving component does not contact the two conductive components; and the starting overload of the first moving component is smaller than the starting overload of the second moving component, and the compression amount of the tube spring in the second moving component is greater than the compression amount of the tube spring in the first moving component.

[0007] As a further improvement of the present invention, the in-position overload of the first moving component is 2 to 3 times its starting overload; and The starting overload of the second moving component is 0.8 to 1.3 times the in-place overload of the first moving component, and the in-place overload of the second moving component is 1.2 to 2 times its starting overload.

[0008] As a further improvement of the present invention, the starting overload of the first moving component is not less than 2g, and the overload in position is 4g~6g; and / or The starting overload of the second moving component is 4g~5g, and the reaching overload is 5g~8g.

[0009] As a further improvement of the present invention, when the conversion switch is not overloaded, the compression amount of the tube spring in the first moving component is 8% to 12%, and the compression amount of the tube spring in the second moving component is 15% to 20%.

[0010] As a further improvement of the present invention, the two conductive components are located in the same radial cross section of the second accommodating hole, and the two conductive components are arranged at an interval of 90°.

[0011] As a further improvement of the present invention, the two guide holes are opened on the same side end surface of the switch body.

[0012] As a further improvement of the present invention, the teeth of the two racks are arranged opposite to each other, and the two gear members are located between the two racks.

[0013] As a further improvement of the present invention, the switch body is made of non-metallic material, and the two accommodating holes are blind holes arranged in parallel.

[0014] As a further improvement of the present invention, at least one of the inertia cylinders is provided with a positioning blind hole in the axial direction at an end away from the tapered portion, for embedding and fixing the corresponding end of the cylinder spring.

[0015] As a further improvement of the present invention, the gland is connected to the first accommodating hole via threads.

[0016] The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0017] In general, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects: (1) The double-stroke long-delay conversion switch of the present invention comprises a switch body, and a receiving hole and a moving part are arranged in pairs on the switch body. By utilizing the combination of the inertia cylinder, the cylinder spring, the gear part and the rack in the moving part, the axial movement of the inertia cylinder under overload is accompanied by the meshing movement of the gear part and the rack, thereby extending the movement time of the moving part under overload. Then, by starting the overload of the two moving parts and setting the compression amount of the cylinder spring, in conjunction with the setting of the ball pin, the control of the movement of the two moving parts in sequence can be accurately achieved, and a double-stroke design can be realized, which fully extends the time for the conversion switch to switch states, is fully suitable for the state switching requirements under long-term continuous overload, and effectively avoids the misunderstanding of the switch locking under short-term / instantaneous overload, thereby ensuring the reliability of the conversion switch.

[0018] (2) The double-stroke long-delay transfer switch in the present invention has a compact structure and is easy to use. It can effectively meet the state switching requirements of the overload switch under long-term continuous overload, and effectively meet the state locking requirements of the overload switch under short-term overload or instantaneous overload, thereby ensuring the reliability and stability of the transfer switch under set requirements and having good practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 1 is a schematic diagram of the overall structure of a double-stroke long-delay transfer switch according to an embodiment of the present invention; Figure 2 , Figure 3 is a schematic diagram of the structure of the transfer switch after the switch body is removed in an embodiment of the present invention; Figure 4 1 is a schematic diagram of the structure of the first moving part of the double-stroke long-delay conversion switch in an embodiment of the present invention; Figure 5 2 is a schematic diagram of the structure of the second moving part of the double-stroke long-delay conversion switch in an embodiment of the present invention; In all the drawings, the same reference numerals represent the same technical features, specifically: 1. Switch body; 2. First moving part; 3. Second moving part; 4. Conductive part; 5. Gland; 6. Ball pin; 101, first accommodating hole; 102, second accommodating hole; 103, guide hole; 201, first inertia cylinder; 202, first cylinder spring; 203, first gear member; 204, first rack; 205, first rotating shaft; 301, second inertia cylinder; 302, second cylinder spring; 303, second gear member; 304, second rack; 305, second rotating shaft. DETAILED DESCRIPTION

[0021] 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 the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] In the description of the present invention, it should be understood that, unless otherwise expressly specified and limited, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0026] Example: See also Figure 1~Figure 5 The double-stroke long-delay transfer switch in the preferred embodiment of the present invention is designed to meet the requirement that the overload switch is turned on only when it is subjected to a long-term continuous overload, and to ensure that the transfer switch remains in a non-conducting state when subjected to an instantaneous overload.

[0027] Specifically, the switching switch in the preferred embodiment includes a switch body 1 with a block structure, and a first moving component 2 and a second moving component 3 for providing a double stroke are correspondingly arranged on the switch body 1. The double stroke design greatly extends the time it takes for the switch to move into place, thereby preventing the switch from accidentally switching instantaneously.

[0028] like Figure 1 As shown in the figure, the switch body 1 in the preferred embodiment is provided with a first accommodating hole 101 and a second accommodating hole 102 for accommodating partial components of the first moving component 2 and the second moving component 3 respectively, and forming a travel space for the two moving components.

[0029] In detail, the two moving parts in the preferred embodiment both include an inertia cylinder, a cylinder spring, a gear part and a rack, that is, the first moving part 2 includes a first inertia cylinder 201, a first cylinder spring 202, a first gear part 203 and a first rack 204, and the second moving part 3 includes a second inertia cylinder 301, a second cylinder spring 302, a second gear part 303 and a second rack 304.

[0030] The inertia tube and the tube spring of the two moving parts are assembled at the ends and embedded in the corresponding accommodating holes.

[0031] It can be understood that the "end assembly" of the inertia cylinder and the tube spring here can be end abutment, or the end of the tube spring can be directly connected to the end of the inertia cylinder, and the connection between the tube spring and the inertia cylinder can also be preferably welding, fixing with a connecting piece, hoop connection, interference fit, etc. as needed, which will not be elaborated here.

[0032] In more detail, corresponding to each accommodating hole, a guide hole 103 is opened on the outer peripheral wall surface of the switch body 1 along the axial direction of the accommodating hole, and each guide hole 103 penetrates and communicates with the corresponding accommodating hole along the radial direction of the accommodating hole.

[0033] Correspondingly, the gear members of the two moving parts are respectively rotatably connected to the rotating shafts passing through the corresponding guide holes 103, that is, the first gear member 203 is connected to the outer periphery of the first inertia cylinder 201 through the first rotating shaft 205; the second gear member 303 is connected to the outer periphery of the second inertia cylinder 301 through the second rotating shaft 305.

[0034] Specifically, one end of the rotating shaft passes through the guide hole 103 and is connected to the outer wall surface of the corresponding inertia cylinder, and the other end of the rotating shaft extends out of the guide hole 103 and is rotatably connected to the corresponding gear member; in this arrangement, when the inertia cylinder moves in the receiving hole due to overload, the rotating shaft will synchronously drive the gear member to move along the axial direction of the receiving hole.

[0035] Exemplarily, in actual configuration, the rotation axis is preferably disposed along the radial direction of the inertia cylinder.

[0036] like Figure 1 As shown in the figure, the racks of the two moving parts are arranged corresponding to the two gear parts, and the two racks are arranged on the outer peripheral wall surface of the switch body 1, and their extension direction is parallel to the axis of the corresponding guide hole, and the two gear parts are respectively meshed with the corresponding racks with one side. Then, when the inertia cylinder moves, the gear part and the rack will also move relative to each other, thereby reducing the speed of the inertia cylinder movement, further extending the time for the moving parts to move into place, and increasing the time required for the conversion switch to switch from the non-conducting state to the conducting state.

[0037] For example, in a specific preferred embodiment, the two guide holes 103 are opened on the same side end surface of the switch body 1, such as Figure 1 as shown in .

[0038] More preferably, the teeth of the two racks are arranged opposite to each other, so that the two gear members are located between the two racks. It can be understood that the two gear members are independent of each other and do not interfere with each other.

[0039] Furthermore, a limiting hole (not shown in the figure) is provided between the two accommodating holes, and the axis of the limiting hole is further perpendicular to the axes of the two accommodating holes. Accordingly, a ball pin 6 is provided in the limiting hole, and both ends of the ball pin 6 are preferably provided in the form of a ball head, and a tapered hole is provided for the ball pin 6 on the outer peripheral wall surface of the second inertia cylinder 301.

[0040] In more detail, in order to achieve the avoidance of the ends of the two inertia cylinders, it is preferred that a tapered portion is provided at one end of the two inertia cylinders away from the tube spring. In this case, the two inertia cylinders include a cylindrical portion and a tapered portion.

[0041] In actual configuration, the tapered hole on the second inertia cylinder 301 is opened on the outer periphery of its cylindrical portion for partially embedding one end of the ball stud 6 .

[0042] Furthermore, a gland 5 is provided at the end of the first receiving hole 101, and the first inertia cylinder 201 and the first cylinder spring 202 are packaged in the first receiving hole 101 by the gland 5. At the same time, two conductive components 4 spaced apart from each other are protruded on the inner circumferential wall surface near the end of the second receiving hole 102, one end of the two conductive components 4 protrudes from the inner wall surface of the second receiving hole 102, and the other end is connected with wiring, so that the two conductive components 4 are connected to the same control circuit.

[0043] In actual configuration, the second inertia cylinder 301 is made of a conductive material, and is away from the two conductive components 4 when the conversion switch is not turned on, and can abut the two conductive components 4 with its outer periphery when turned on to realize the conduction of the corresponding control circuit. Of course, the second inertia cylinder 301 can also be made of a non-conductive material, and a conductive material is disposed on the outer periphery of its tapered portion.

[0044] When the conversion switch is not overloaded, the two cylinder springs are in a compressed state. At this time, the first inertia cylinder 201 is pressed against the inner wall surface of the pressure cover 5 by the first cylinder spring 202; one end of the ball pin 6 is pressed against the outer periphery of the cylindrical part of the first inertia cylinder 201, and the other end is embedded in the conical hole on the outer periphery of the cylindrical part of the second inertia cylinder 301, so that the conical part of the second moving part 3 does not contact the two conductive parts 4.

[0045] By cooperating with the pressure cover 5 and the ball pin 6, the second inertia cylinder 301 can be kept away from the two conductive components 4 when the switch is not continuously overloaded, and the conical structure at the end of the second inertia cylinder 301 also facilitates the avoidance between the second inertia cylinder 301 and the two conductive components 4.

[0046] Furthermore, the starting overload of the first moving part 2 is smaller than the starting overload of the second moving part 3, so that when the transfer switch is overloaded, the first moving part 2 starts to move before the second moving part 3. Moreover, due to the action of the ball stud 6, the second moving part 3 can also be reliably locked when the first moving part 2 moves.

[0047] In more detail, based on the setting of the tapered portion at the end of the first inertia cylinder 201, when the first moving component 2 is subjected to an overload and continues to move, the position where the ball stud 6 abuts against the first inertia cylinder 201 will be converted from its cylindrical portion to the tapered portion, and the tapered portion of the first inertia cylinder 201 is used for the avoidance of the ball stud 6. Under the action of continuous overload, the first inertia cylinder 201 moves into place (the ball stud 6 moves to its tapered portion). At this time, the first inertia cylinder 201 releases the constraint on one end of the ball stud 6, thereby releasing the axial limitation of the ball stud 6 on the second inertia cylinder 301. The second inertia cylinder 301 starts to move due to the overload and squeezes the ball stud 6 toward the side of the first accommodating hole 101.

[0048] More specifically, the compression amount of the second tube spring 302 is greater than the compression amount of the first tube spring 202 to ensure that after the overload is eliminated, the second inertia tube 301 can quickly return to its original position under the action of the restoring force of the second tube spring 302 until the conical portion of the second inertia tube 301 simultaneously abuts against the two conductive components 4 to connect the two conductive components 4.

[0049] Preferably, in actual setting, the in-place overload of the first moving component 2 is 2 to 3 times its starting overload; and the starting overload of the second moving component 3 is 0.8 to 1.3 times the in-place overload of the first moving component 2, and the in-place overload of the second moving component 3 is 1.2 to 2 times its starting overload.

[0050] Exemplarily, the starting overload of the first moving part 2 is not less than 2g ("g" here refers to single gravity, that is, 2g represents double gravity, and the same applies to subsequent records), and the in-position overload is 4g~6g; and / or, the starting overload of the second moving part 3 is 4g~5g, and the in-position overload is 5g~8g.

[0051] More preferably, when the switching switch is not overloaded, the compression amount of the tube spring of the first moving component 2 is 8% to 12%, for example, 10%; at the same time, the compression amount of the tube spring in the second moving component 3 is 15% to 20%, further preferably 18%.

[0052] Furthermore, in actual arrangement, the two conductive components 4 are preferably located in the same radial cross section of the second receiving hole 102 , and the two conductive components 4 are preferably arranged at an interval of 90°.

[0053] In order to better maintain the assembly form of the tube spring and the inertia tube, in a specific preferred embodiment, a positioning blind hole is opened in the axial direction at one end of at least one inertia tube away from the tapered portion, for embedding and fixing the corresponding tube spring end. For example, positioning blind holes are opened at the ends of the two inertia tubes, and the ends of the two tube springs are embedded in the corresponding positioning blind holes.

[0054] In addition, in actual configuration, the switch body 1 in the preferred embodiment is made of non-metallic material, and the two receiving holes are blind holes arranged in parallel. At the same time, the gland 5 in the preferred embodiment is preferably connected to the first receiving hole 101 through a thread.

[0055] For the double-stroke long-delay switch in the preferred embodiment, when it is subjected to long-term continuous overload, the first inertia cylinder 201 of the first moving part 2 moves first, at which time, the first gear part 203 moves synchronously relative to the first rack 204. Through the meshing movement of the first gear part 203 and the first rack 204, the movement speed of the first inertia cylinder 201 can be reduced, and the time it takes to move from the start state to the in-position state can be extended. This is the first stroke; when the first moving part 2 moves to the position, the first inertia cylinder 201 releases the limit on the ball pin 6, and the second inertia cylinder 301 of the second moving part 3 starts to move, pressing the ball pin 6 to the side of the first accommodating hole 101, and continuously compressing the second cylinder spring 302. When the second inertia cylinder 301 moves, the second gear part 303 and the second rack 304 continuously mesh and move, slowing down the movement speed of the second inertia cylinder 301 and extending the time it takes for the second moving part 3 to move to the position. This is the second stroke.

[0056] The two-stage travel design allows the transfer switch to fully meet the switch movement requirements under long-term continuous overload. In contrast, short-term overload or instantaneous overload is not enough to meet the switch movement requirements, so the switch can be well locked.

[0057] Thereafter, when the overload disappears, the second tube spring 302 can be reset faster due to the larger pre-compression amount, thereby contacting and conducting with the two conductive components 4, thus completing the use function of the conversion switch.

[0058] The double-stroke long-delay transfer switch in the present invention has a compact structure and is easy to use. It can effectively meet the state switching requirements of the overload switch under long-term continuous overload, and effectively meet the state locking requirements of the overload switch under short-term overload or instantaneous overload, ensuring the reliability and stability of the transfer switch under set requirements, and has good practical value.

[0059] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-stroke long-delay transfer switch, comprising a switch body, characterized in that: The switch body is provided with a first accommodating hole and a second accommodating hole, and corresponding to each accommodating hole, a guide hole is provided on one side surface of the switch body along the axial direction of the accommodating hole, and a limiting hole is provided that passes through the two accommodating holes; A first moving component is provided corresponding to the first accommodating hole, a second moving component is provided corresponding to the second accommodating hole, and a ball pin is provided in the limiting hole; a gland is provided at the end of the first accommodating hole, and two conductive components spaced apart from each other are protruded on the inner circumferential wall surface of the second accommodating hole near the end; Both moving parts include an inertia cylinder, a cylinder spring, a gear member and a rack; the inertia cylinder and the cylinder spring are embedded in corresponding accommodating holes, the two are assembled at their ends, and one end of the cylinder spring away from the inertia cylinder is limited in the corresponding accommodating hole; the gear member is arranged on the outside of the switch body, and is coaxially rotatably connected with a rotating shaft passing through the corresponding guide hole, and one end of the rotating shaft away from the gear member is connected to the outer wall surface of the corresponding inertia cylinder; the rack is arranged on one side of the corresponding limiting hole and extends along the axial direction of the limiting hole, and the rack is meshed with the corresponding gear member; The two inertia cylinders each include a cylindrical portion and a conical portion, the conical portion is arranged at one end of the inertia cylinder away from the cylinder spring, and a conical hole is opened on the outer periphery of the cylindrical portion of the second moving component; When the conversion switch is not overloaded, the two tube springs are in a compressed state, and one end of the ball pin is pressed against the outer periphery of the cylindrical portion of the first moving component, and the other end is embedded in the conical hole, so that the conical portion of the second moving component does not contact the two conductive components; and the starting overload of the first moving component is smaller than the starting overload of the second moving component, and the compression amount of the tube spring in the second moving component is greater than the compression amount of the tube spring in the first moving component.

2. The double-stroke long-delay transfer switch according to claim 1, characterized in that: The in-position overload of the first moving component is 2 to 3 times its starting overload; and The starting overload of the second moving component is 0.8 to 1.3 times the in-place overload of the first moving component, and the in-place overload of the second moving component is 1.2 to 2 times its starting overload.

3. The double-stroke long-delay transfer switch according to claim 2, characterized in that: The starting overload of the first moving part is not less than 2g, and the overload in position is 4g~6g; and / or The starting overload of the second moving part is 4g~5g, and the reaching overload is 5g~8g.

4. The double-stroke long-delay transfer switch according to any one of claims 1 to 3, characterized in that: When the conversion switch is not overloaded, the compression amount of the tube spring of the first moving component is 8% to 12%, and the compression amount of the tube spring of the second moving component is 15% to 20%.

5. The double-stroke long-delay transfer switch according to any one of claims 1 to 3, characterized in that: The two conductive components are located in the same radial cross section of the second accommodating hole, and the two conductive components are arranged at a 90° interval.

6. The double-stroke long-delay transfer switch according to any one of claims 1 to 3, characterized in that: The two guide holes are arranged on the same side end surface of the switch body.

7. The double-stroke long-delay transfer switch according to claim 6, characterized in that: The teeth of the two racks are arranged opposite to each other, and the two gear members are located between the two racks.

8. The double-stroke long-delay transfer switch according to any one of claims 1 to 3 and 7, characterized in that: The switch body is made of non-metallic material, and the two accommodating holes are blind holes arranged in parallel.

9. The double-stroke long-delay transfer switch according to any one of claims 1 to 3 and 7, characterized in that: At least one of the inertia cylinders is provided with a positioning blind hole in the axial direction at one end away from the tapered portion, for embedding and fixing the corresponding end of the cylinder spring.

10. The double-stroke long-delay transfer switch according to any one of claims 1 to 3 and 7, characterized in that: The gland is connected to the first receiving hole via threads.

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