Suspension cable type three-dimensional universal acceleration normally-open and normally-closed combined switch

Abstract

The invention relates to a suspension cable type three-dimensional universal acceleration normally-open and normally-closed combined switch, and belongs to the technical field of acceleration switches. Comprising a conductor shell and a conductor core which is suspended in the conductor shell through a conductor suspension line; the number of the conductor suspension wires is three, the three conductor suspension wires penetrate through and are connected with the conductor core and are distributed in a three-dimensional coordinate system mode, the three conductor suspension wires are connected into an integral wire through series wires, and normally-closed switch leads are connected and arranged at the two outer ends of the integral wire; when the acceleration is increased until the conductor suspension wire is broken, the conductor core moves, and the conductor shell and the conductor core can be adsorbed together after being contacted; a normally-open switch lead and a normally-closed switch lead are arranged on the outer surface of the conductor shell; the normally open switch lead is connected with the conductor shell and the conductor core respectively; and the normally-closed switch lead is connected with two outer ends of the whole lead connected by the conductor suspension wires respectively. The acceleration switch is provided with the normally-open switch lead and the normally-closed switch lead, so that the combination of the normally-open switch and the normally-closed switch is realized.

Description

Technical Field

[0001] The invention relates to a suspended cable type three-dimensional universal acceleration normally open normally closed combined switch, belonging to the technical field of acceleration switches. Background Art

[0002] With the rapid development of modern industry and technology, the demand for precision control and automation is growing. In many automated control systems, the accelerometer switch is a key component whose performance directly affects the response speed and stability of the system. However, there are many limitations in the existing accelerometer switches, which limit their large-scale application in low-cost fields.

[0003] Currently, acceleration switches are mainly used in the fields of machinery, electronics, automobiles, military, aerospace, etc., which have high technical requirements for acceleration switches, resulting in complex structures, complex manufacturing processes, large sizes, high costs, etc., which are not suitable for use in low-cost, large-scale manufactured consumer products.

[0004] Most of the existing acceleration switches on the market are based on traditional mechanical or electromagnetic principles, or on MEMS with complex processes. These principles cannot meet the performance requirements in low-cost large-scale consumer application scenarios and are not suitable for large-scale consumer applications.

[0005] For acceleration switches, some occasions only use one-way switches, while some occasions require three-dimensional multi-directional acceleration switches. Switches can be divided into normally open, normally closed, and normally open and normally closed combination types. Summary of the invention

[0006] The purpose of the present invention is to provide a cable-suspended three-dimensional universal acceleration normally open and normally closed combined switch.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] A cable-suspended three-dimensional universal acceleration normally open normally closed combined switch, comprising a conductor shell and a conductor core suspended and installed in the conductor shell by a conductor suspension wire; three conductor suspension wires are provided, the three conductor suspension wires penetrate and connect the conductor core and are distributed and arranged in a three-dimensional coordinate system, the three conductor suspension wires are connected as an integral conductor by a series conductor and are connected and arranged with normally closed switch leads at two outer ends; when the acceleration increases to the point that the conductor suspension wire is broken, the conductor core can move, and the conductor shell and the conductor core can be adsorbed together after contact;

[0009] A normally open switch lead and a normally closed switch lead are arranged on the outer surface of the conductor shell; wherein the normally open switch lead is respectively connected to the conductor shell and the conductor core; and the normally closed switch lead is respectively connected to the two outer ends of the entire wire formed by connecting the conductor suspension wire.

[0010] A further improvement of the technical solution of the present invention is that an insulating through hole is arranged on the surface of the conductor shell corresponding to the conductor suspension wire, and the conductor suspension wire passes through the insulating through hole and is fixed in the insulating through hole.

[0011] A further improvement of the technical solution of the present invention is that: the normally open switch lead is connected to the conductor core through an elastic connecting wire; the elastic connecting wire is made of a conductive material.

[0012] A further improvement of the technical solution of the present invention is that the conductor suspension wire has a certain elastic deformation, the maximum elastic deformation is L, wherein, (√2-1)×h<L<h, h=shell inner wall radius-core outer wall radius=core moving distance

[0013] A further improvement of the technical solution of the present invention is that the conductor core is made of magnetic material, and the conductor shell is made of ferromagnetic material.

[0014] A further improvement of the technical solution of the present invention is that the conductor core is made of ferromagnetic material, and the conductor shell is made of magnetic material.

[0015] Due to the adoption of the above technical solution, the technical effects achieved by the present invention are as follows:

[0016] The acceleration switch of the present invention uses a conductor suspension wire to fix the conductor core, and the conductor core is moved by breaking the conductor suspension wire. A normally open switch lead and a normally closed switch lead are arranged to form a switch circuit with a conductor shell, a conductor core, a conductor suspension wire, and an elastic connecting wire, thereby realizing the combination of a normally open switch and a normally closed switch. The circuit corresponding to the normally closed switch can change the switch state by breaking the conductor suspension wire, and the circuit corresponding to the normally open switch can change the switch state by contacting and adsorbing the conductor core and the conductor shell.

[0017] The acceleration switch of the present invention uses a conductor suspension wire to fix the conductor core in a balanced state, and the conductor suspension wire is distributed and arranged in a three-dimensional coordinate system; the equilibrium state of the conductor core is changed by breaking the conductor suspension wire, so that the conductor core can move. The conductor core in the acceleration switch has a high degree of freedom of movement when moving, and can detect acceleration in all directions.

[0018] The acceleration switch of the present invention is a disposable switch. Since it is completely formed by mechanical structure using parts and has a relatively simple structure, it has the advantages of easy processing and low processing cost. The acceleration switch is suitable for use in occasions where a normally open and normally closed combined switch is required, and can achieve good use effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Among them, 1. conductor shell, 2. conductor core, 3. conductor suspension wire, 4. elastic connecting wire, 5. normally open switch lead, 6. normally closed switch lead, 7. insulating through hole, 8. series wire. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0023] The invention discloses a cable-suspended three-dimensional universal acceleration normally open and normally closed combined switch, which has two usage modes: a normally open switch and a normally closed switch.

[0024] The acceleration switch has a conductor shell and a conductor core, which are distributed and arranged in a three-dimensional coordinate system using conductor suspension wires, and the conductor core is suspended and fixed by the conductor suspension wires. When acceleration is generated in a certain direction, and when the acceleration increases, under the action of inertia, the tension formed by the conductor core and the suspension wire breaks the suspension wire, the equilibrium state of the conductor core is destroyed, and the conductor core can move, thereby realizing the change of the switch state. The switch is a normally open and normally closed combination switch, which has two usage modes: a normally open switch and a normally closed switch. Among them, when the normally open switch has no acceleration in the initial state, the switch is in an open state; when the conductor suspension wire is broken and the switch is triggered, the switch changes from an open state to a closed state. When the normally closed switch has no acceleration in the initial state, the switch is in a closed state; when the conductor suspension wire is broken and the switch is triggered, the switch changes from a closed state to an open state.

[0025] like Figure 1As shown, the acceleration switch has a conductor housing 1 and a conductor core 2. The interior of the conductor housing 1 is a hollow structure, and the conductor core 2 is located inside the conductor housing 1. The conductor core 2 is suspended and installed inside the conductor housing 1 through a conductor suspension wire 3, and the conductor core 2 is generally located in the central area inside the conductor housing 1. In a specific implementation, three conductor suspension wires 3 are provided, and the three conductor suspension wires 3 are distributed and arranged in a three-dimensional coordinate system, that is, distributed and arranged in an XYZ three-axis coordinate system, and the three conductor suspension wires 3 penetrate and connect the conductor core 2 at the coordinate origin position of the three-dimensional coordinate system. The three conductor suspension wires 3 will not contact each other when penetrating the conductor core 2, and the three conductor suspension wires 3 are connected in series using a series conductor 8, so that the three conductor suspension wires 3 form a whole wire. A normally closed switch lead 6 is provided at the outermost end of this whole wire. Usually, the two ends of the conductor suspension wire 3 extend outward from the inside of the conductor housing 1, and the series conductor 8 is arranged outside the conductor housing 1. When the conductor suspension wire 3 penetrates the conductor core 2 , the corresponding through hole is an insulating through hole; no circuit connection occurs between the conductor suspension wire 3 and the conductor core 2 .

[0026] A normally open switch lead 5 and a normally closed switch lead 6 are arranged on the outer surface of the conductor housing 1, so that the acceleration switch can be used as both a normally open switch and a normally closed switch. The normally open switch leads 5 are arranged in pairs, and the two normally open switch leads 5 in the same group are respectively connected to the conductor housing 1 and the elastic connecting wire 4 connecting the conductor core 2. The normally closed switch leads 6 are arranged in pairs, and the two normally closed switch leads 6 are respectively connected to the two outer ends of the entire wire formed by connecting the conductor suspension wire 3.

[0027] When the acceleration is generated, when the acceleration increases to the switching threshold, the conductor suspension wire 3 is pulled off, and at this time, the conductor core 2 is no longer under force balance, and the conductor core 2 can move. The conductor core 2 moves to contact the conductor shell 1, and the conductor shell 1 and the conductor core 2 can be adsorbed together after contact. In order to make the conductor shell 1 and the conductor core 2 adsorbed together, usually, the conductor core 2 is made of magnetic material and the conductor shell 1 is made of ferromagnetic material. Alternatively, the conductor shell 1 can be made of magnetic material and the conductor core 2 can be made of ferromagnetic material.

[0028] like Figure 1 As shown, in order to realize the arrangement of the conductor suspension wire 3, an insulating through hole 7 is usually arranged on the surface of the conductor housing 1 corresponding to the conductor suspension wire 3, and the conductor suspension wire 3 is passed through the insulating through hole 7 from the inside of the conductor housing 1 to the outside, and the conductor suspension wire 3 is fixed in the insulating through hole 7. The insulating through hole 7 is insulated, and the conductor suspension wire 3 passes through the insulating through hole 7 without circuit connection with the conductor housing 1.

[0029] In the acceleration switch, one of the normally open switch leads 5 is connected to the conductor core 2 through an elastic connecting wire 4; the elastic connecting wire 4 is made of a conductive material. The elastic connecting wire 4 is provided with an insulating through hole 7 on the conductor housing 1. The elastic connecting wire 4 passes through the insulating through hole 7 and extends to the outside of the conductor housing 1. It is used in pairs with another normally open switch lead 5 outside the conductor housing 1. The elastic connecting wire 4 will not affect the movement of the conductor core 2.

[0030] The working principle of the acceleration switch is as follows: the acceleration switch includes two usage modes: normally open switch and normally closed switch.

[0031] 1. The normally closed switch is closed in the initial state, and the switch state is formed by a normally closed switch outer lead 6, a whole wire formed by the conductor suspension wire 3 and another outer lead 6 to form a circuit. When acceleration is generated in a certain direction, the conductor core 2, due to inertia, generates a movement trend opposite to the acceleration direction and then stretches the conductor suspension wire 3, and the conductor suspension wire 3 is subjected to tension; as the acceleration gradually increases, the tension on the conductor suspension wire 3 gradually increases. When the acceleration increases to a certain value, one or two conductor suspension wires 3 will be broken, and at this time, the switch changes from a closed state to an open state.

[0032] 2. The normally open switch is disconnected in the initial state. When acceleration occurs in a certain direction, the conductor core 2, due to inertia, generates a movement tendency in the opposite direction of the acceleration and then stretches the conductor suspension wire 3, and the conductor suspension wire 3 is subjected to tension; as the acceleration gradually increases, the tension on the conductor suspension wire 3 gradually increases. When the acceleration increases to a certain value, one or two conductor suspension wires 3 will be broken, and the conductor core 2 will move in the opposite direction of the acceleration until it contacts the conductor shell 1. After the conductor core 2 and the conductor shell 1 contact, they will be adsorbed together. The switch state is formed by a normally open switch lead 5, an elastic connecting wire 4 of a conductor material, a conductor core 2, a conductor shell 1 and another normally open switch lead 5 to form a circuit. At this time, the switch changes from an open state to a closed state.

[0033] In use, usually one conductor suspension wire is pulled apart, or two conductor suspension wires may be pulled apart in special cases. This is related to the direction of acceleration, which may be in the same direction as the XYZ axis represented by two suspension wires, or may not be in the same direction as any of the conductor suspension wires. When it is not in the same direction as the conductor suspension wires, the component force of the pulling force generated by the acceleration acts on the suspension wires. A special case is that when the direction of the acceleration is on the angular bisector in the middle of the angle between the two conductor suspension wires, it is easier for the two conductor suspension wires to break, and according to the decomposition of the force, the acceleration required at this time is the largest, which is the maximum threshold for activating the acceleration switch.

[0034] After the acceleration is generated, the tension on the conductor core is calculated as follows: Where F is the tension on the conductor core, m is the mass of the conductor core, a is the acceleration of the conductor core, and F 导体悬线 is the breaking force of a conductor suspension wire. In the most extreme case, the direction of acceleration is on the bisector of the angle between two conductor suspension wires. The above formula is used to determine the breaking force threshold of the conductor suspension wire, which can also be said to be the maximum excitation threshold of the acceleration switch.

[0035] The conductor suspension wire 3 used in the switch needs to have a certain elastic deformation to ensure that the conductor core 2 has a sufficient movement distance. The maximum elastic deformation of the conductor suspension wire is L, where: h = shell inner wall radius - core outer wall radius = core movement distance. This is determined by the most extreme case, and it is necessary to ensure that after a conductor suspension wire is pulled off, the conductor core 2 can still reach the position of contact with the conductor shell 1 under the traction of other conductor suspension wires 3.

[0036] The conductor core 2 used in the acceleration switch is preferably spherical in shape, and the conductor shell 1 is preferably hollow in shape, so that the two can have good contact at any position.

[0037] The technical solution uses conductor suspension wires to fix the conductor core, and the conductor suspension wires are distributed and arranged in a three-dimensional coordinate system. The equilibrium state of the conductor core is changed by breaking the conductor suspension wires, so that the conductor core can move. The conductor core in the acceleration switch has a high degree of freedom of movement when moving, and can detect acceleration in all directions.

[0038] The acceleration switch uses a conductor suspension wire to fix the conductor core, and the conductor core is moved by breaking the conductor suspension wire. The normally open switch lead and the normally closed switch lead are arranged to form a switch circuit with the conductor housing, the conductor core, the conductor suspension wire, and the elastic connecting wire to realize the combination of the normally open switch and the normally closed switch. The acceleration switch is a disposable switch. However, since it is completely formed by mechanical structure using parts and has a relatively simple structure, it has the advantages of easy processing and low processing cost.

[0039] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A cable-suspended three-dimensional universal acceleration normally open and normally closed combined switch, characterized in that: The invention comprises a conductor shell (1) and a conductor core (2) suspended and installed in the conductor shell (1) by a conductor suspension wire (3); three conductor suspension wires (3) are provided, the three conductor suspension wires (3) penetrate and connect the conductor core (2) and are distributed and arranged in a three-dimensional coordinate system; the three conductor suspension wires (3) are connected to form an integral conductor by a series conductor (8) and are connected to normally closed switch leads (6) at both outer ends; when the acceleration increases to the point where the conductor suspension wire (3) is broken, the conductor core (2) can move, and the conductor shell (1) and the conductor core (2) can be adsorbed together after contact; A normally open switch lead (5) and a normally closed switch lead (6) are arranged on the outer surface of the conductor housing (1); wherein the normally open switch lead (5) is respectively connected to the conductor housing (1) and the conductor core (2); and the normally closed switch lead (6) is respectively connected to the two outer ends of a whole wire formed by connecting the conductor suspension wire (3).

2. The cable-suspended three-dimensional universal acceleration normally open and normally closed combined switch according to claim 1, characterized in that: An insulating through hole (7) is provided on the surface of the conductor housing (1) corresponding to the conductor suspension wire (3); the conductor suspension wire (3) passes through the insulating through hole (7) and is fixed in the insulating through hole (7).

3. The cable-suspended three-dimensional universal acceleration normally open and normally closed combined switch according to claim 1, characterized in that: The normally open switch lead (5) is connected to the conductor core (2) via an elastic connecting wire (4); the elastic connecting wire (4) is made of a conductive material.

4. The cable-suspended three-dimensional universal acceleration normally open and normally closed combined switch according to claim 1, characterized in that: The conductor suspension wire (3) has a certain elastic deformation, and the maximum elastic deformation is L ， in, h = radius of the inner wall of the outer shell - radius of the outer wall of the inner core = distance the inner core moves.

5. The cable-suspended three-dimensional universal acceleration normally open and normally closed combined switch according to claim 1, characterized in that: The conductor core (2) is made of magnetic material, and the conductor shell (1) is made of ferromagnetic material.

6. The cable-suspended three-dimensional universal acceleration normally open and normally closed combined switch according to claim 1, characterized in that: The conductor core (2) is made of ferromagnetic material, and the conductor shell (1) is made of magnetic material.

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