Suspension cable type three-dimensional universal acceleration normally-closed switch

Abstract

The invention relates to a suspension cable type three-dimensional universal acceleration normally-closed switch, and belongs to the technical field of acceleration switches. Comprising a shell and an inner core suspended in the shell through a conductor suspension wire; the conductor suspension lines are distributed according to a three-dimensional coordinate system; two ends of the conductor suspension wire are connected with the outer lead and are in a closed state; and when the acceleration is increased until the conductor suspension wire is broken, the switch is changed from an on state to an off state. According to the acceleration switch, the conductor suspension wire is used for fixing the inner core, and the change of the switch state is realized through the breaking of the conductor suspension wire. The movement freedom degree of the inner core during movement is high, and detection of acceleration in all directions can be achieved. The acceleration switch is a disposable switch. However, since the device is completely formed by parts through a mechanical structure and the structure is relatively simple, the device has the advantages of easiness in processing and low processing cost.

Description

Technical Field

[0001] The invention relates to a suspended cable type three-dimensional universal acceleration normally closed 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, in some occasions, only a one-way switch is sufficient, while in other occasions, a three-dimensional multi-directional acceleration switch is required. Summary of the invention

[0006] The purpose of the present invention is to provide a cable-suspended three-dimensional universal acceleration normally closed switch, which is suitable for occasions where a normally closed switch is required.

[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 closed switch comprises a shell and a core suspended in the shell by a conductor suspension wire; the conductor suspension wire is distributed in a three-dimensional coordinate system; the two outer ends of the conductor suspension wire are connected to an external lead wire and are in a circuit state; when the acceleration increases to the point where the conductor suspension wire is broken, the switch changes from a circuit state to a circuit break state.

[0009] A further improvement of the technical solution of the present invention is as follows: three conductor suspension wires are arranged; the three conductor suspension wires penetrate and connect the inner core and are distributed and arranged in a three-dimensional coordinate system; the three conductor suspension wires are connected into an integral conductor using a series conductor and external leads are connected and arranged at both outer ends; an insulating through hole is arranged on the outer shell for the conductor suspension wire to pass through and be fixed.

[0010] A further improvement of the technical solution of the present invention is that the inner core is spherical and the outer shell is a hollow sphere.

[0011] A further improvement of the technical solution of the present invention is that the inner core is a cube; and the outer shell is a hollow cube.

[0012] Due to the adoption of the above technical solution, the technical effects achieved by the present invention are as follows:

[0013] The acceleration switch of the present invention is a normally closed switch, which uses a conductor suspension wire to fix the inner core, is connected to an external circuit through the conductor suspension wire and an external lead wire, and changes the switch state by breaking the conductor suspension wire, thereby realizing circuit control, and has good reliability.

[0014] The acceleration switch of the present invention fixes the inner core by three conductor suspension wires, and the three conductor suspension wires are distributed in a three-dimensional coordinate system. While effectively fixing the inner core, the inner core has a high degree of freedom of movement when moving, thereby enabling detection of acceleration in various directions. Compared with a switch that can only detect acceleration in a single direction, the acceleration switch has good usability and a wider range of usage occasions.

[0015] The acceleration switch of the present invention is a disposable switch. Since it is completely formed by mechanical structure with parts and has a relatively simple structure, it has the advantages of easy processing and low processing cost, and is suitable for large-scale production and use. The acceleration switch is suitable for use in occasions where a normally closed switch is required, and can achieve good use effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Among them, 1. outer shell, 2. inner core, 3. conductor suspension wire, 4. outer lead wire, 5. insulating through hole, 6. series wire. DETAILED DESCRIPTION

[0018] 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.

[0019] 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.

[0020] The present invention is a cable-suspended three-dimensional universal acceleration normally closed switch, which is a normally closed acceleration switch. The core is fixed in a three-dimensional coordinate distribution manner by a conductor suspension line, and the core has a high degree of freedom of movement when moving, thereby enabling the detection of acceleration in all directions.

[0021] like Figure 1 As shown, the acceleration switch is of normally closed type, mainly including a shell 1 and a core 2, both of which are made of insulating materials. The core 2 is suspended in the shell 1 by a conductor suspension wire 3, and the conductor suspension wire 3 is distributed and arranged in a three-dimensional coordinate system, that is, distributed and arranged in an XYZ three-axis coordinate system. Three conductor suspension wires 3 are arranged, and one end of the conductor suspension wire 3 is fixedly connected to the core 2. As the name implies, the conductor suspension wire 3 is made of a conductive material. The two outer ends of the conductor suspension wire 3 are connected to the external lead 4, and the switch is in a closed state. When the acceleration increases, a pulling force is generated on the conductor suspension wire 3. When the conductor suspension wire 3 is broken, the switch changes from a closed state to a closed state.

[0022] In the specific implementation, Figure 1 As shown, three conductor suspension wires 3 are provided, and are distributed in the form of a three-dimensional coordinate system. The three conductor suspension wires 3 all penetrate and connect the core 2, and the three conductor suspension wires 3 do not intersect in the core 2. Series conductors 6 are used at the two ends of the outside of the three conductor suspension wires 3 for series connection, so that the three conductor suspension wires 3 are connected into an integral wire through the series conductors 6, and the two outer ends of the integral wire are connected with external leads 4 made of conductive material, and are connected to the external circuit through the external leads 4 to realize circuit control. At least six insulating through holes 5 are provided on the outer shell 1 to allow the conductor suspension wires 3 to pass through, and the conductor suspension wires 3 are fixed in the insulating through holes 5. The series conductors 6 are located outside the outer shell 1. The insulating through holes 5 are located on the side wall of the outer shell 1, and can usually be realized by installing an insulating sleeve at the corresponding position of the outer shell 1.

[0023] In a specific implementation, the core 2 is preferably spherical, and the shell 1 is a hollow sphere. The core 2 can also be square, and the shell 1 can be a hollow cube. The core and the shell can be of any shape.

[0024] The working principle of the normally closed acceleration switch is as follows: in the initial state, the acceleration switch forms a switch path state through an outer lead of a conductor material, a conductor suspension wire, and an outer lead of another conductor material. When acceleration is generated in a certain direction, the 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 path state to a disconnection state.

[0025] In use, generally one conductor suspension wire is pulled apart, or in special cases two conductor suspension wires may be pulled apart, which is related to the direction of acceleration. The direction of acceleration may be in the same direction as the XYZ axis represented by the two conductor suspension wires, or it may be in a different direction from the conductor suspension wires. When it is in a different direction from the conductor suspension wires, the component force of the pulling force generated by the acceleration acts on the conductor suspension wires. A special case is that when the direction of acceleration is in the middle of the angle between the two conductor suspension wires, it is easier for the two conductor suspension wires to be pulled apart. And according to the decomposition of force, the acceleration required at this time is the largest, which is the maximum threshold for activating the acceleration switch.

[0026] After the acceleration occurs, the tension on the conductor core is calculated as F = ma ≥ √2 × F 导体悬线 ; 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.

[0027] The acceleration switch is a normally closed switch, and the outer shell and the inner core do not need to be adsorbed together, so there is no need to use magnetic materials or ferromagnetic materials.

[0028] The acceleration switch uses a conductor suspension wire to fix the core, and the switch state is changed by breaking the conductor suspension wire. The core has a high degree of freedom of movement when moving, and can detect acceleration in all directions. 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. The acceleration switch is suitable for use in situations where a normally closed switch is required, and can achieve good use effects.

[0029] 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 closed switch, characterized in that: The switch comprises a housing (1) and a core (2) suspended in the housing (1) by means of a conductor suspension wire (3); the conductor suspension wire (3) is arranged in a distributed manner in a three-dimensional coordinate system; both ends of the conductor suspension wire (3) are connected to an external lead wire (4) and are in a circuit state; when the acceleration increases to the point where the conductor suspension wire (3) is broken, the switch changes from the circuit state to the circuit break state.

2. The cable-suspended three-dimensional universal acceleration normally closed switch according to claim 1 is characterized in that: Three conductor suspension wires (3) are provided; the three conductor suspension wires (3) penetrate the core (2) and are distributed in a three-dimensional coordinate system; the three conductor suspension wires (3) are connected to form an integral conductor using a series conductor (6) and are connected to external leads (4) at both outer ends; and an insulating through hole (5) is provided on the housing (1) for the conductor suspension wires (3) to pass through and be fixed.

3. The cable-suspended three-dimensional universal acceleration normally closed switch according to any one of claims 1 to 2, characterized in that: The inner core (2) is spherical; the outer shell (1) is a hollow sphere.

4. The cable-suspended three-dimensional universal acceleration normally closed switch according to any one of claims 1 to 2, characterized in that: The inner core (2) is a cube; the outer shell (1) is a hollow cube.

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