Ice breaking device for starter switch
By introducing a cross-overlapping elastic contact piece and silver contact design into the starter switch, the ice layer is melted by the current heating effect, which solves the problem of contact icing in traditional starter switches in cold environments and improves starting reliability and contact stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-17
- Publication Date
- 2026-04-07
AI Technical Summary
Traditional starter switches suffer from contact icing in cold environments, making it difficult to conduct electricity. Multiple impacts are needed to break the ice layer, increasing starting difficulty and mechanical damage, and reducing reliability and stability.
By introducing cross-overlapping elastic contacts into the starter switch, the ice layer is melted using the current heating effect, and the reliability and stability of the contacts are improved through the use of metal materials and silver contact design.
It enables easy ice breaking in cold environments, improves starter reliability, extends contact life, and reduces maintenance costs and failure rate.
Smart Images
Figure CN224096638U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to starter switch technical field, concretely relates to a starter switch ice breaking device. BACKGROUND
[0002] In cold environment, the contact of starter switch is prone to icing phenomenon, which seriously hinders the normal start of the starter. The starting process of the traditional starter switch depends on the impact of the moving contact on the static contact to realize the conduction of the circuit. However, when the contact surface is attached with ice layer, the electrical connection between the moving contact and the static contact becomes extremely difficult, and the existence of the ice layer significantly increases the contact resistance between the two, and even directly leads to the failure of the circuit conduction.
[0003] In the prior art, in order to solve the problem of contact icing, a convex structure is usually arranged on the moving contact or the static contact. The physical action of the convex structure when the moving contact impacts the static contact is used to break the ice layer. However, it is found in actual application that when the ice layer is thick, a single impact is often difficult to effectively break the ice layer, and multiple impacts are needed to succeed. Frequent impact not only increases the difficulty and time of starting the starter, but also may cause mechanical damage to the moving contact and the static contact, reducing the service life of the contact. In addition, the contact wear and deformation caused by multiple impacts also further increases the maintenance cost and failure rate, affecting the reliability and stability of the starter. UTILITY MODEL CONTENT
[0004] The utility model aims at the problems existing in the prior art, and provides a starter switch ice breaking device, which effectively solves the problem that the moving contact needs to impact the static contact multiple times or multiple times still cannot break the ice layer during traditional starting, so that the engine can be easily ignited, and the starting reliability of the starter in cold environment is significantly improved.
[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:
[0006] The application discloses an ice breaker for a starter switch, which comprises a switch main body and a moving iron core assembly; the switch main body comprises a switch cover and a switch shell connected with the switch cover; the switch cover is connected with a connecting post one and a connecting post two, the connecting post one is connected with a static contact one, the connecting post two is connected with a static contact two, and a coil is arranged in the switch shell; the moving iron core assembly comprises a moving iron core, a push rod connected with one end of the moving iron core, and a pull rod connected with the other end of the moving iron core, and the push rod is connected with a moving contact; the moving iron core is movably arranged in the switch shell, moves along an axial direction under the magnetic force of the coil, and is reset under the action of a reset spring; the connecting post one is connected with an elastic contact one, and the connecting post two is connected with an elastic contact two; the elastic contact one and the elastic contact two extend towards each other at one end, and form a superimposed structure with a spacing; and the elastic contact one and the elastic contact two are in contact with each other under the pushing action of the moving iron core.
[0007] Further, silver contact points are arranged on the opposite sides of the elastic contact one and the elastic contact two.
[0008] Further, the elastic contact one is provided with a mounting hole one, the mounting hole one is connected with a silver contact block one, the elastic contact two is provided with a mounting hole two, the mounting hole two is connected with a silver contact block two, and the silver contact block one and the silver contact block two are aligned with each other as contact points.
[0009] Further, the elastic contact two abuts against the inner side of the switch cover, and the elastic contact one is arranged in a suspended mode.
[0010] Further, one end of the moving iron core is provided with a cavity, a limiting ring is fixedly arranged at the port of the cavity, the pull rod is arranged in the cavity, one end of the pull rod passes through the limiting ring and is coaxially movably arranged relative to the moving iron core, the pull rod is sleeved with an engagement spring, one end of the engagement spring abuts against the stepped surface of the pull rod, and the other end of the engagement spring abuts against the limiting ring.
[0011] Further, the reset spring is sleeved on the push rod, one end of the reset spring abuts against the stepped surface of the push rod, and the other end of the reset spring abuts against the switch shell.
[0012] Further, the push rod is sleeved with an installation cylinder which can axially move, an overtravel spring is arranged between the push rod and the installation cylinder, and the moving contact is fixedly connected to the installation cylinder.
[0013] Compared with the prior art, the ice breaker for the starter switch has the following beneficial effects:
[0014] 1. The elastic contact pieces one and two are additionally connected to the terminal post one and the terminal post two, and are cross-stacked and have a spacing; when the moving iron core is displaced under the action of magnetic force, the push rod first pushes the elastic contact piece to contact, and uses the current heat effect to make the double elastic contact pieces and the static contact piece gather a large amount of heat for a short time, melt the ice layer of the static contact piece, and weaken the adhesion; when the moving contact piece impacts, the ice can be easily broken, effectively solving the problem that the moving contact piece of the traditional starting needs to impact the static contact piece for multiple times or multiple times still cannot break the ice layer, so that the engine can be easily ignited, and the starting reliability of the starter in a cold environment is significantly improved.
[0015] 2. The elastic contact piece is made of metal material, so that even if the contact points are adhered, the elastic contact piece can be easily returned, and meanwhile, the contact points of the two elastic contact pieces are arranged to be small enough, so that the contact points are not easy to freeze, and even if a small amount of ice is frozen, the ice can be broken under the impact force of the push rod, the reliability and stability of the contact points are improved, and the normal work of the switch is ensured. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical schemes in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.
[0017] Figure 1 It is a sectional view structure schematic diagram of the starter switch in the embodiments of the present application.
[0018] Figure 2 It is a sectional view structure schematic diagram of the starter switch in the embodiments of the present application. Figure 1 It is a sectional view structure schematic diagram of the starter switch in the embodiments of the present application.
[0019] In the figure: 1, switch cover; 2, switch shell; 3, terminal post one; 4, terminal post two; 5, static contact piece one; 6, static contact piece two; 7, coil; 8, moving iron core; 9, push rod; 10, pull rod; 11, moving contact piece; 12, return spring; 13, elastic contact piece one; 14, elastic contact piece two; 15, mounting hole one; 16, silver contact block one; 17, mounting hole two; 18, silver contact block two; 19, limit ring; 20, engagement spring; 21, mounting cylinder; 22, overtravel spring. DETAILED DESCRIPTION
[0020] The technical scheme of the present application will be described clearly and completely in combination with the drawings in the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present application.
[0021] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed during use, which is merely for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.
[0022] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0023] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "setting", "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be connected inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0024] In a cold environment, the contacts of the starter switch are prone to icing, which seriously hinders the normal starting of the starter. The starting process of the traditional starter switch relies on the impact of the moving contact on the static contact to realize the conduction of the circuit. However, when the contact surface is attached with an ice layer, the electrical connection between the moving contact and the static contact becomes extremely difficult, the existence of the ice layer significantly increases the contact resistance between the two, and even directly causes the circuit to fail to conduct.
[0025] In the prior art, in order to solve the problem of contact icing, a protruding structure is usually provided on the moving contact or the static contact. The physical action of the protrusion when the moving contact impacts the static contact is used to break the ice layer. However, it is found in actual application that when the ice layer is thick, a single impact often cannot effectively break the ice layer, and multiple impacts are required to succeed. Frequent impacts not only increase the difficulty and time of starting the starter, but also can cause mechanical damage to the moving contact and the static contact, reducing the service life of the contacts. In addition, the wear and deformation of the contacts caused by multiple impacts also increase the maintenance cost and failure rate, affecting the reliability and stability of the starter.
[0026] In view of the above technical problems, the embodiment of the application provides a starter switch ice breaking device, which comprises a switch main body and a moving iron core assembly; the switch main body comprises a switch cover 1 and a switch shell 2 connected with the switch cover 1; the switch cover 1 is connected with a wiring column 1 3 and a wiring column 2 4, the wiring column 1 3 is connected with a static contact 1 5, the wiring column 2 4 is connected with a static contact 2 6, and a coil 7 is arranged in the switch shell 2; the moving iron core assembly comprises a moving iron core 8, a push rod 9 connected with one end of the moving iron core 8, a pull rod 1 0 connected with the other end of the moving iron core 8, and a moving contact 1 1 connected with the push rod 9; the moving iron core 8 is movably arranged in the switch shell 2, moves along an axial direction under the magnetic force of the coil 7, and is reset under the action of a reset spring 1 2; the wiring column 1 3 is connected with an elastic contact 1 3, and the wiring column 2 4 is connected with an elastic contact 2 1 4; the elastic contact 1 3 and the elastic contact 2 1 4 extend towards each other at one end, forming an overlapping structure with a spacing; and the elastic contact 1 3 and the elastic contact 2 1 4 are in contact with each other under the pushing action of the moving iron core 8.
[0027] When not powered, the reset spring 1 2 is in a natural state, and the elastic force of the reset spring 1 2 acts on the stepped surface of the moving iron core 8, so that the moving iron core 8 is kept in an initial position. At this time, the push rod 9 and the moving contact 1 1 are in a separated state from the static contact 1 5 and the static contact 2 6, the pull rod 1 0 does not pull the starter transmission mechanism, and the whole switch is in an off state. At the same time, although the elastic contact 1 3 and the elastic contact 2 1 4 extend towards each other at one end to form an overlapping structure with a spacing, they are not in contact, and the circuit is in an off state.
[0028] When the coil 7 is powered, a strong electromagnetic attraction is generated. The electromagnetic attraction acts on the moving iron core 8, overcomes the elastic force of the reset spring 1 2, and makes the moving iron core 8 move towards the coil 7. Since one end of the moving contact 1 1 is connected with the push rod 9 and the other end is connected with the pull rod 1 0, the moving iron core 8 moves synchronously with the push rod 9 and the pull rod 1 0.
[0029] The end of the push rod 9 first contacts the elastic contact 1 3 and pushes the elastic contact 1 3 to contact the elastic contact 2 1 4. At this time, the current flows into the negative electrode through the double elastic contacts, and a large amount of heat is accumulated on the double elastic contacts and the static contacts for a short time due to the thermal effect of the current, so that the ice layer of the static contacts is melted and the adhesion is weakened.
[0030] The push rod 9 continues to push the moving contact 1 1 to contact the static contact 1 5 and the static contact 2 6, so that the two are in conduction, realizing the communication of the circuit. At the same time, the pull rod 1 0 pulls the starter transmission mechanism, so that the starter starts to work.
[0031] When the coil 7 is powered off, the electromagnetic force disappears, and the elastic force of the reset spring 12 begins to act. One end of the reset spring 12 abuts against the outer wall of the switch shell 2, and the other end abuts against the stepped surface of the moving iron core 8. Under the action of the elastic force, the moving iron core 8 is pushed to move away from the coil 7, and returns to the initial position. When the moving iron core 8 moves, the push rod 9 and the pull rod 10 move synchronously, the push rod 9 separates from the moving contact 11, the static contact 1 5 and the static contact 6, the circuit is disconnected, and the pull rod 10 also stops pulling the starter transmission mechanism, so that the starter stops working.
[0032] In the embodiment of the application, the elastic contact 1 3 and the elastic contact 2 4 are additionally connected to the terminal post 1 and the terminal post 2. The two elastic contacts are cross-stacked and have a spacing. When the moving iron core 8 is displaced under the action of the magnetic force, the push rod 9 first pushes the elastic contact to make the double elastic contacts and the static contact gather a large amount of heat for a short time, melt the ice layer of the static contact, and weaken the adhesion. After the moving contact 1 1 is impacted, the ice layer can be easily broken, thereby solving the problem that the moving contact of the traditional starter needs to impact the static contact for multiple times or multiple times still cannot break the ice layer, and making the engine easily ignited.
[0033] The elastic contact is made of metal material, so that the elastic contact can be easily returned even if the contact is adhered. Meanwhile, the contact of the two elastic contacts is set to be small enough, so that the contact of the two elastic contacts is not easy to freeze, and even if a small amount of ice is frozen, the ice can be broken under the impact force of the push rod 9, thereby improving the reliability and stability of the contact and ensuring the normal work of the switch.
[0034] The device combines the elastic contact, the moving iron core assembly and the static contact together, realizes the functions of ice breaking and circuit conduction in the limited space, ensures the normal starting and stopping of the starter switch, and effectively solves the problem that the ice layer affects the starting.
[0035] For example, the resistance of the two elastic contacts is controlled to be 500 milliohms, the overlapping of the contacts is 6 millimeters, the elastic contact has silver-plated contacts, and the distance between the contacts is 3 millimeters.
[0036] In some embodiments, the opposite sides of the elastic contact 1 3 and the elastic contact 2 4 are respectively provided with silver contacts.
[0037] The silver contacts make the current pass through the double elastic contacts more smoothly, ensure the rapid generation of heat in the ice breaking process, have good wear resistance and oxidation resistance, can prolong the service life of the elastic contact, and reduce the problem of poor contact caused by wear or oxidation of the contact.
[0038] In some embodiments, the elastic contact 1 3 is provided with a mounting hole 1 5, the mounting hole 1 5 is connected to a silver contact block 1 6, the elastic contact 2 4 is provided with a mounting hole 2 1 7, the mounting hole 2 1 7 is connected to a silver contact block 2 1 8, and the silver contact block 1 6 and the silver contact block 2 1 8 are aligned with each other as the contacts.
[0039] The contact between silver contact block 16 and silver contact block 2 (18) allows heat to be generated rapidly and transferred to the stationary contact plate, effectively melting the ice layer. The connection method between the silver contact blocks and the mounting holes makes the installation of the silver contact blocks convenient and secure.
[0040] In some embodiments, the second elastic contact 14 abuts against the inner side of the switch cover 1, and the first elastic contact 13 is suspended.
[0041] The contact method between the second elastic contact piece 14 and the switch cover 1 ensures that it can accurately contact the first elastic contact piece 13 during the process of being pressed by the push rod 9, thereby improving the reliability and stability of the contact.
[0042] In some embodiments, one end of the moving iron core 8 is provided with a cavity, and a limiting ring 19 is fixedly provided at the port of the cavity. The pull rod 10 is provided in the cavity, and one end of the pull rod 10 passes through the limiting ring 19 and moves coaxially with the moving iron core 8. The pull rod 10 is fitted with a meshing spring 20, one end of the meshing spring 20 abuts against the stepped surface of the pull rod 10, and the other end abuts against the limiting ring 19.
[0043] When the resistance of the starter transmission mechanism is high, the pull rod 10 will encounter significant resistance during the pulling process, at which point the engagement spring 20 will be compressed. Since the pull rod 10 can move axially relative to the moving iron core 8, the compression of the engagement spring 20 will not hinder the continued upward movement of the moving iron core 8. The moving iron core 8 will continue to move upward under the influence of electromagnetic attraction. This structural design allows the starter switch to adapt to different starter transmission mechanism resistance conditions, ensuring reliable circuit continuity even under high transmission mechanism resistance, enabling the starter to start normally.
[0044] In some embodiments, the reset spring 12 is sleeved on the push rod 9, with one end of the reset spring 12 abutting against the stepped surface of the push rod 9 and the other end abutting against the switch housing 2.
[0045] This structural arrangement makes the installation of the return spring 12 more compact, making full use of the space around the push rod 9, which is beneficial for the miniaturization and integration of the device.
[0046] In some embodiments, the push rod 9 is fitted with an axially movable mounting cylinder 21, and an overtravel spring 22 is provided between the push rod 9 and the mounting cylinder 21. The movable contact piece 11 is fixedly connected to the mounting cylinder 21.
[0047] After the moving contact 11 contacts the stationary contact, if the push rod 9 continues to move, the overtravel spring 22 can absorb the excess impact force, reduce the mechanical wear between the moving contact 11 and the stationary contact, and extend the service life of the contact.
[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A starter switch ice-breaking device, comprising: Switch body and moving iron core assembly; The switch body includes a switch cover (1) and a switch housing (2) connected to the switch cover (1); the switch cover (1) is connected to a terminal block one (3) and a terminal block two (4), the terminal block one (3) is connected to a stationary contact piece one (5), the terminal block two (4) is connected to a stationary contact piece two (6), and a coil (7) is provided inside the switch housing (2); The moving iron core assembly includes a moving iron core (8), a push rod (9) connected to one end of the moving iron core (8), and a pull rod (10) connected to the other end of the moving iron core (8). The push rod (9) is connected to a moving contact piece (11). The moving iron core (8) is movably disposed inside the switch housing (2), moves axially under the magnetic force of the coil (7), and is reset under the action of the reset spring (12); The feature is that the first terminal (3) is connected to the first elastic contact piece (13), and the second terminal (4) is connected to the second elastic contact piece (14); one end of the first elastic contact piece (13) and the second elastic contact piece (14) extend towards each other to form a stacked structure with intervals; the first elastic contact piece (13) and the second elastic contact piece (14) come into contact with each other under the pushing action of the moving iron core (8).
2. The starter switch ice-breaking device according to claim 1, characterized in that, The elastic contact one (13) and the elastic contact two (14) are respectively provided with silver contacts on their opposite sides.
3. The starter switch ice-breaking device according to claim 2, characterized in that, The first elastic contact piece (13) is provided with a first mounting hole (15), which is connected to the first silver contact block (16). The second elastic contact piece (14) is provided with a second mounting hole (17), which is connected to the second silver contact block (18). The first silver contact block (16) and the second silver contact block (18) are aligned with each other as contacts.
4. The starter switch ice-breaking device according to claim 1, characterized in that, The second elastic contact (14) abuts against the inner side of the switch cover (1), and the first elastic contact (13) is suspended.
5. The starter switch ice-breaking device according to claim 1, characterized in that, One end of the moving iron core (8) is provided with a cavity, and a limiting ring (19) is fixedly provided at the port of the cavity. The pull rod (10) is provided in the cavity, and one end of it passes through the limiting ring (19) and moves coaxially relative to the moving iron core (8). The pull rod (10) is fitted with a meshing spring (20), one end of which abuts against the stepped surface of the pull rod (10), and the other end abuts against the limiting ring (19).
6. The starter switch ice-breaking device according to claim 1, characterized in that, The reset spring (12) is sleeved on the push rod (9). One end of the reset spring (12) abuts against the stepped surface of the push rod (9), and the other end abuts against the switch housing (2).
7. The starter switch ice-breaking device according to claim 1, characterized in that, The push rod (9) is fitted with an axially movable mounting sleeve (21), and an overtravel spring (22) is provided between the push rod (9) and the mounting sleeve (21). The movable contact piece (11) is fixedly connected to the mounting sleeve (21).