A lever control guard

Abstract

The utility model discloses a kind of lever control protection devices, including protection module and lever control shell, the protection module includes a DC power supply and bridge circuit, the anode of DC power supply is connected with the upper node of bridge circuit, the cathode of DC power supply is connected with the lower node of bridge circuit, coil L1 and coil L2 are connected from left to right between the left node and right node of bridge circuit, diode D1 is connected between upper node and left node, and diode D1 is parallel with power switch K1, diode D4 is connected between left node and lower node, and diode D4 is parallel with power switch K4, diode D6 is connected between lower node and right node, and diode D6 is parallel with power switch K6.The utility model is connected with the diode D1-D6 diode of each power switch reverse, to coil realizes the safe control of multiple mode, and realizes the safety protection to power switch, simultaneously prevent the damage of other vehicle control module caused by current impact when coil current is disconnected Self-induced electromotive force.

Description

Technical Field

[0001] This utility model relates to the field of lever control and protection technology, specifically a lever control and protection device. Background Technology

[0002] With the development of vehicle intelligence, vehicle operation and control are also becoming more intelligent. The shift lever of the AMT transmission is automated through pneumatic, hydraulic and electric mechanisms. The electric structure of the control lever is widely used because of its fast response speed and high operation accuracy. However, the electric structure of the lever has the problem of large inrush current during the control process, which can easily damage the semiconductor devices in the control structure, and even damage the vehicle's control module, causing vehicle failure and affecting traffic. Therefore, it does not meet the current needs. To address this, we propose a lever control protection device. Utility Model Content

[0003] The purpose of this utility model is to provide a lever control protection device to solve the problem mentioned in the background art that the electric structure of the lever has a large inrush current during the control process, which easily damages the semiconductor devices in the control structure, and may even damage the vehicle's control module, causing vehicle malfunction.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a lever control protection device, comprising a protection module and a lever control housing, wherein the lever control housing has a sliding cavity inside, a magnetic core is slidably connected to the middle position of the sliding cavity, permanent magnets are fixed on both sides of the magnetic core, and coil supports and coils are fixed on both sides of the sliding cavity, the two coils being coil L1 and coil L2 from left to right, the permanent magnet facing coil L1 being the N pole, and the permanent magnet facing coil L2 being the S pole;

[0005] The protection module includes a DC power supply and a bridge circuit. The positive terminal of the DC power supply is connected to the upper node of the bridge circuit, and the negative terminal of the DC power supply is connected to the lower node of the bridge circuit. Coil L1 and coil L2 are connected from left to right between the left and right nodes of the bridge circuit. A diode D1 is connected between the upper node and the left node, and a power switch K1 is connected in parallel with diode D1. A diode D4 is connected between the left node and the lower node, and a power switch K4 is connected in parallel with diode D4. A diode D6 is connected between the lower node and the right node, and a power switch K6 is connected in parallel with diode D6. A diode D3 is connected between the right node and the upper node, and a power switch K3 is connected in parallel with diode D3.

[0006] In the bridge circuit, diodes D2 and D5 are connected from top to bottom between the upper and lower nodes. Power switch K2 is connected in parallel with diode D2, and power switch K5 is connected in parallel with diode D5. The line between diodes D2 and D5 is connected to the line between coil L1 and coil L2.

[0007] Preferably, the forward bias direction of diode D1 is from the left node to the upper node, the forward bias direction of diode D2 is from the lower node to the upper node, the forward bias direction of diode D3 is from the right node to the upper node, the forward bias direction of diode D4 is from the lower node to the left node, the forward bias direction of diode D5 is from the lower node to the upper node, and the forward bias direction of diode D6 is from the lower node to the right node.

[0008] Preferably, the magnetic core has a pivot fixed to its axis, a spring is connected between the surface of the magnetic core and the two coil supports, and the two ends of the pivot are connected to the coil supports by sliding bearings.

[0009] Preferably, the upper surface of the lever control housing is provided with a signal hole.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This invention achieves coil current reversal by controlling the on / off state of different power switches. The different current directions cause the coil to generate attraction and repulsion forces on the permanent magnet on the lever mechanism in different directions, thereby achieving lever position switching. Through diodes D1-D6 connected in reverse parallel with each power switch, safety protection of the power switches is achieved, while preventing current surges caused by self-induced electromotive force when the coil current is disconnected from causing damage to other vehicle control modules. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the protection module of this utility model;

[0013] Figure 2 This is a schematic diagram of the lever mechanism of this utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the protection module control state one of this utility model;

[0015] Figure 4 This is a schematic diagram of the control state two of the protection module of this utility model;

[0016] Figure 5 This is a schematic diagram of the control state three of the protection module of this utility model;

[0017] Figure 6 This is a schematic diagram of the control state four of the protection module of this utility model;

[0018] Figure 7 This is a schematic diagram of the control state five of the protection module of this utility model;

[0019] Figure 8 This is a structural schematic diagram of the control state six of the protection module of this utility model;

[0020] Figure 9 This is a schematic diagram of the structure of the protection module control state seven of this utility model;

[0021] Figure 10 This is a structural schematic diagram of the control state eight of the protection module of this utility model.

[0022] In the diagram: 1. Toggle control housing; 2. Signal hole; 3. Permanent magnet; 4. Magnetic core; 5. Sliding cavity; 6. Coil bracket; 7. Coil; 8. Spring; 9. Sliding bearing; 10. Toggle shaft. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Please see Figures 1 to 10 This utility model provides an embodiment of a lever control protection device, including a protection module and a lever control housing 1. The upper surface of the lever control housing 1 is provided with a signal hole 2. The inside of the lever control housing 1 is provided with a sliding cavity 5. A magnetic core 4 is slidably connected to the middle position of the sliding cavity 5. A lever shaft 10 is fixed to the axis of the magnetic core 4. A spring 8 is connected between the surface of the magnetic core 4 and two coil supports 6. The two ends of the lever shaft 10 are connected to the coil supports 6 through sliding bearings 9. Permanent magnets 3 are fixed to the two side surfaces of the magnetic core 4. Coil supports 6 and coils 7 are fixed to the two sides of the sliding cavity 5. The two coils 7 are coil L1 and coil L2 from left to right. The permanent magnet 3 facing coil L1 is the N pole, and the permanent magnet 3 facing coil L2 is the S pole.

[0025] The protection module includes a DC power supply and a bridge circuit. The positive terminal of the DC power supply is connected to the upper node of the bridge circuit, and the negative terminal of the DC power supply is connected to the lower node of the bridge circuit. Coil L1 and coil L2 are connected from left to right between the left and right nodes of the bridge circuit. A diode D1 is connected between the upper node and the left node, and a power switch K1 is connected in parallel with diode D1. A diode D4 is connected between the left node and the lower node, and a power switch K4 is connected in parallel with diode D4. A diode D6 is connected between the lower node and the right node, and a power switch K6 is connected in parallel with diode D6. A diode D3 is connected between the right node and the upper node, and a power switch K3 is connected in parallel with diode D3.

[0026] The forward bias direction of diode D1 is from the left node to the top node, the forward bias direction of diode D2 is from the bottom node to the top node, the forward bias direction of diode D3 is from the right node to the top node, the forward bias direction of diode D4 is from the bottom node to the left node, the forward bias direction of diode D5 is from the bottom node to the top node, and the forward bias direction of diode D6 is from the bottom node to the right node.

[0027] In the bridge circuit, diodes D2 and D5 are connected from top to bottom between the upper and lower nodes. Power switch K2 is connected in parallel with diode D2, and power switch K5 is connected in parallel with diode D5. The line between diodes D2 and D5 is connected to the line between coil L1 and coil L2.

[0028] The solution consists of power switches K1-K6, diodes D1-D6, coils L1-L2, permanent magnets, and a DC power supply (see [link]). Figure 1 Coils L1 and L2 are mounted on the lever mechanism (see...). Figure 2 Inside the housing, the lever mechanism consists of the housing, sliding bearings, springs, lever shaft assembly, coils L1 and L2, and a coil support. The sliding bearings are installed inside the coil support, which contains a coil wound inside the coil support, which is also installed inside the housing. The lever shaft assembly consists of a magnetic core mounted on the lever shaft, with permanent magnets at both ends. The lever shaft assembly is mounted on sliding bearings at both ends of the mechanism. A spring is installed at each end of the lever shaft assembly to reduce the impact force during its movement. When the lever shaft assembly is in the middle position of the mechanism, the spring force at both ends stabilizes it in this position. When different switches in the power switches K1-K6 are connected or disconnected with DC power, the lever mechanism's switching requirements are achieved. The reverse conduction of diodes D1-D6 prevents current surges caused by the self-induced electromotive force when the coil current is disconnected, thus preventing damage to other control modules.

[0029] When the device follows the following Figure 3 When power switches K1 and K6 are turned on, the direction of the coil current is as follows: Figure 3 The flow is in the direction of the arrow. According to the right-hand screw rule, the magnetic field formed by coil L1 and the permanent magnet on the dial assembly generate a repulsive force. The magnetic field of coil L2 also generates a repulsive force. The dial assembly is kept in the middle position under the electromagnetic force.

[0030] When power switches K1 and K6 are open, power switch K3 is closed, and the induced currents generated by coils L1 and L2 follow the following... Figure 4 The discharge direction is achieved through diode D1 and power switch K3 to ensure that the inrush current does not affect other control modules;

[0031] When the device follows the following Figure 5When K3 and K4 are connected, the direction of the coil current is as follows: Figure 5 The current flows in the direction of the arrow. According to the right-hand screw rule, the magnetic field generated by coil L1 attracts the permanent magnet on the pivot assembly. The magnetic field of coil L2 also generates an attractive force. Under the electromagnetic force, the pivot assembly remains in the middle position. When K3 and K4 are disconnected, K1 is connected, and the induced current generated by coils L1 and L2 flows according to... Figure 6 The discharge direction is achieved through D3 and K1 to ensure that the inrush current does not affect other control modules;

[0032] When the device follows the following Figure 7 When K2, K4, and K6 are switched on, the direction of the coil current is as follows: Figure 7 The current flows in the direction of the arrow. According to the right-hand screw rule, the magnetic field generated by coil L1 attracts the permanent magnet on the pivot assembly, while the magnetic field of coil L2 also repels it. Under the electromagnetic force, the pivot assembly moves to the left. When K2, K4, and K6 are disconnected, K1 and K3 are connected. The induced current generated by coils L1 and L2 flows according to... Figure 8 The discharge direction is achieved through D2 and K1, K3 to ensure that the inrush current does not affect other control modules;

[0033] When the device follows the following Figure 9 When K1, K3, and K5 are switched on, the direction of the coil current is as follows: Figure 9 As the arrow in the diagram indicates the direction of flow, according to the right-hand screw rule, the magnetic field formed by coil L1 repulses the permanent magnet on the dial assembly, while the magnetic field of coil L2 also generates an attractive force. Under the electromagnetic force, the dial assembly moves to the right.

[0034] When K1, K3, and K5 are disconnected, K2 is connected, and the induced current generated by coils L1 and L2 follows the following... Figure 10 The discharge direction is achieved through D1, D3, and K2 to ensure that the inrush current does not affect other control modules;

[0035] The coil current is reversed by controlling the on and off of different power switches. The different current directions cause the coil to generate attraction and repulsion forces on the permanent magnet on the lever mechanism in different directions, thereby achieving the switching of the lever position. The D1-D6 diodes connected in parallel with each switch in the opposite direction are used to achieve safety protection for the power switches, and at the same time prevent the current surge caused by the self-induced electromotive force when the coil current is disconnected from causing damage to other vehicle control modules.

[0036] By controlling the on / off state of different switches, the direction of the current in the coil is changed, thereby changing the direction of the magnetic field. The magnetic field generates an attractive or repulsive force with the permanent magnet, which pushes the shift shaft to move left or right to achieve gear shifting. When the current is suddenly cut off, the coil will generate a reverse induced current. At this time, the diode will guide the current to be released through a safe path to avoid impacting other control modules.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A lever control protective device, comprising a protective module and a lever control housing (1), wherein the lever control housing (1) has a sliding cavity (5) inside, a magnetic core (4) is slidably connected to the middle position of the sliding cavity (5), permanent magnets (3) are fixed on both sides of the magnetic core (4), and coil brackets (6) and coils (7) are fixed on both sides of the sliding cavity (5), characterized in that: The two coils (7) are coil L1 and coil L2 from left to right. The permanent magnet (3) facing coil L1 is the N pole, and the permanent magnet (3) facing coil L2 is the S pole. The protection module includes a DC power supply and a bridge circuit. The positive terminal of the DC power supply is connected to the upper node of the bridge circuit, and the negative terminal of the DC power supply is connected to the lower node of the bridge circuit. Coil L1 and coil L2 are connected from left to right between the left and right nodes of the bridge circuit. A diode D1 is connected between the upper node and the left node, and a power switch K1 is connected in parallel with diode D1. A diode D4 is connected between the left node and the lower node, and a power switch K4 is connected in parallel with diode D4. A diode D6 is connected between the lower node and the right node, and a power switch K6 is connected in parallel with diode D6. A diode D3 is connected between the right node and the upper node, and a power switch K3 is connected in parallel with diode D3. In the bridge circuit, diodes D2 and D5 are connected from top to bottom between the upper and lower nodes. Power switch K2 is connected in parallel with diode D2, and power switch K5 is connected in parallel with diode D5. The line between diodes D2 and D5 is connected to the line between coil L1 and coil L2.

2. The lever control protection device according to claim 1, characterized in that: The forward bias direction of diode D1 is from the left node to the top node, the forward bias direction of diode D2 is from the bottom node to the top node, the forward bias direction of diode D3 is from the right node to the top node, the forward bias direction of diode D4 is from the bottom node to the left node, the forward bias direction of diode D5 is from the bottom node to the top node, and the forward bias direction of diode D6 is from the bottom node to the right node.

3. The lever control protection device according to claim 1, characterized in that: The magnetic core (4) has a pivot shaft (10) fixed to its axis. A spring (8) is connected between the surface of the magnetic core (4) and the two coil supports (6). The two ends of the pivot shaft (10) are connected to the coil supports (6) through sliding bearings (9).

4. The lever control protection device according to claim 1, characterized in that: The upper surface of the lever control housing (1) is provided with a signal hole (2).

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