Electromagnetic clutch coil connection device

Abstract

The application discloses a kind of electromagnetic clutch coil connecting device, this method includes clutch controller by connecting device to electromagnetic coil output current, control clutch state;In specific state phase of clutch, set protection time length and output current extreme value.Connecting device includes, the surface of shell is provided with jack;First connection component, including the fastener being arranged at the jack, and the communication piece being arranged at one end of the fastener;And, second connection component, including the clamping piece being arranged at one group of the jack, the lock piece being arranged at one side of the clamping piece, and the lock piece being arranged on the lock piece.The device can conveniently connect the coil in electromagnetic clutch with external wire, and the connection mode is various, in addition, the device can also prevent the wire connection from falling off due to the vibration of automobile in driving.

Description

Technical Field

[0001] This invention relates to the field of hybrid vehicle technology, and in particular to an electromagnetic clutch coil connection device. Background Technology

[0002] An electromagnetic clutch, also known as an electromagnetic coupling, is an electromagnetic mechanical connector that uses the principles of electromagnetic induction and the friction between inner and outer friction plates to engage or disengage two rotating components in a mechanical transmission system, allowing the driven component to engage or disengage without the driving component stopping its rotation. It is an automatically actuated electrical device. Currently, to reduce the development costs of hybrid electric vehicles, a dog clutch is commonly used between the engine and the coupling in hybrid electric vehicles. A dog clutch is a conventional clutch, consisting of a fixed half-clutch and a moving half-clutch. The fixed half-clutch is fixed to the driving shaft, and the moving half-clutch is fixed to the driven shaft. Dog clutches typically engage and disengage by energizing or de-energizing an electromagnetic coil. However, if the current is not monitored and controlled during coil energization, the coil is prone to overheating, leading to clutch failure.

[0003] Based on this, the present invention provides an electromagnetic clutch coil overheat protection method that can effectively prevent the coil from overheating and reduce the failure rate. In addition, to facilitate maintenance and replacement, the device also provides a coil connection device, which not only facilitates the connection of wires but also prevents the wires from coming loose due to vibration. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the above-mentioned or existing electromagnetic clutch coil overheat protection and connection, the present invention is proposed.

[0006] Therefore, one object of the present invention is to provide an overheat protection method for an electromagnetic clutch coil, which aims to solve the problem that the electromagnetic clutch coil is prone to overheating when energized.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an electromagnetic clutch coil overheat protection method, comprising: a clutch controller outputting current to the electromagnetic coil through a connecting device to control the clutch state; and setting a protection duration and an extreme value of the output current during a specific state stage of the clutch.

[0008] As a preferred embodiment of the electromagnetic clutch coil overheat protection method of the present invention, the clutch state includes: clutch open, defined as the disengagement stage; clutch from open to engaged, defined as the engagement stage; clutch remaining engaged, defined as the holding stage.

[0009] As a preferred embodiment of the electromagnetic clutch coil overheat protection method of the present invention, the step of setting the protection duration and output current extreme value in a specific state stage of the clutch includes setting an upper limit value for the protection duration and output current in the engagement stage; and setting an upper limit value for the long-term output current in the holding stage.

[0010] The beneficial effects of this protection method are as follows: through the precise current output of the clutch controller, it can ensure that the clutch coil will not overheat, mobilize the vehicle controller to assist in establishing an overheat protection mechanism for the clutch electromagnetic coil, introduce a current closed-loop circuit, and improve the accuracy of the current controller.

[0011] Another objective of this invention is to provide an electromagnetic clutch coil connection device, which aims to solve the problem that the coil wire connection is inconvenient and easily falls off due to vibration.

[0012] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an electromagnetic clutch coil connecting device, the connecting device including a housing with a socket on its surface; a first connecting component including a fastener disposed at the socket and a connecting member disposed at one end of the fastener; and a second connecting component including a clamping member disposed at one of the sockets and an anti-loosening member disposed on one side of the clamping member.

[0013] In a preferred embodiment of the electromagnetic clutch coil connection device of the present invention, the fastener includes a knob disposed outside the housing and a threaded post disposed on one side of the knob, the threaded post having a moving groove in the middle, and the threaded post being threadedly engaged with the housing.

[0014] In a preferred embodiment of the electromagnetic clutch coil connection device of the present invention, the fastener further includes a clamping plate disposed inside the movable groove, and a first spring disposed between the clamping plate and the threaded post. The clamping plate is slidably engaged with the movable groove, and the two ends of the first spring are fixedly connected to the clamping plate and the threaded post, respectively.

[0015] In a preferred embodiment of the electromagnetic clutch coil connecting device of the present invention, a conical block is further provided at the end of the clamping plate, the surface of the conical block is provided with threads, and a winding groove is further provided in the middle of the clamping plate.

[0016] In a preferred embodiment of the electromagnetic clutch coil connecting device of the present invention, the connecting member includes a connecting block disposed outside the conical block and a connecting piece disposed on one side of the connecting block. The connecting block is further provided with a conical groove inside, and the surface of the conical groove is provided with a threaded groove. A spring is also provided at the other end of the connecting piece. One end of the connecting piece is fixedly connected to the connecting block, and the other end is fixedly connected to the spring. The conical groove cooperates with the conical block.

[0017] As a preferred embodiment of the electromagnetic clutch coil connection device of the present invention, the clamping member includes a pressing block disposed on one side of the insertion hole, a second spring disposed at the end of the pressing block, and a movable sleeve disposed outside the second spring, wherein the movable sleeve is slidably engaged with the interior of the housing.

[0018] In a preferred embodiment of the electromagnetic clutch coil connection device of the present invention, the anti-loosening component includes a connecting rod disposed on one side of the movable sleeve, the connecting rod being rotatably engaged with the interior of the housing via a rotating shaft, one end of the connecting rod being slidably and rotatably engaged with the movable sleeve, and the other end of the connecting rod being provided with a wedge block; the anti-loosening component also includes a top rod disposed between the connecting rods, with sliding pins disposed at both ends of the top rod, the sliding pins engaging with the wedge block, and an unlocking rod disposed on the side of the top rod; the anti-loosening component also includes a third spring disposed at the bottom of the top rod, a pull rope disposed above the top rod, and a weight disposed at one end of the pull rope, the other end of the pull rope being fixedly connected to the top rod, and both ends of the third spring being fixedly connected to the top rod and the interior of the housing, respectively.

[0019] The advantages of this connection device are: it allows for convenient connection of the coil in the electromagnetic clutch to external wires, and offers various connection methods. Furthermore, this device prevents the wire connection from becoming detached due to vibrations during vehicle operation. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of 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 creative effort. Wherein:

[0021] Figure 1 This is a schematic diagram illustrating the steps of the electromagnetic clutch coil overheat protection method in Example 1.

[0022] Figure 2 This is a structural diagram of the electromagnetic clutch in Example 2.

[0023] Figure 3 This is an external structural diagram of the connecting device C on the electromagnetic clutch coil in Example 2.

[0024] Figure 4 This is a diagram showing the internal structure of the connecting device C on the electromagnetic clutch coil in Example 3.

[0025] Figure 5 This is a structural diagram of the first connecting component of the electromagnetic clutch coil connecting device C in Embodiment 3.

[0026] Figure 6 This is a structural diagram of the connecting device C on the electromagnetic clutch coil in Example 3.

[0027] Figure 7 This is a schematic diagram showing the connection of the first and second connecting components of the electromagnetic clutch coil connecting device C in Embodiment 3.

[0028] Figure 8 This is a schematic diagram of the second connecting component of the electromagnetic clutch coil connecting device C in Embodiment 3. Detailed Implementation

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0032] Example 1

[0033] Reference Figure 1 This is the first embodiment of the present invention, which provides a method for overheating protection of an electromagnetic clutch coil.

[0034] The function of the clutch controller is to output current to the solenoid coil, thereby controlling the clutch state. Different current outputs will cause the clutch to be in different states, as detailed below:

[0035] The clutch controller does not output current, the clutch is open, and the undisengaged phase is defined.

[0036] The clutch controller outputs a large current, and the electromagnetic coil generates a large magnetic force to attract the push ring. The push ring pushes away the return spring, and the clutch goes from being open to being engaged, which is defined as the engagement stage.

[0037] The clutch controller outputs a suitable current, and the electromagnetic coil generates a small magnetic force to keep the push ring in the engaged position, thus keeping the clutch engaged. This is defined as the holding phase.

[0038] In addition, to ensure the reliable disengagement of the return spring by the push ring, a lower limit value for the engagement current is set. The clutch controller integrates a real-time output current sampling circuit, which enables a closed-loop output current function.

[0039] To prevent the solenoid coil from overheating due to prolonged high current flow during the engagement phase, a protection timeout and an output current limit are set. If the protection timeout is exceeded, the clutch controller automatically exits the engagement phase, stops outputting current, and sends an engagement timeout signal to the vehicle controller. The system can only re-enter the engagement state after a certain period of cooling. To prevent the solenoid coil from overheating due to prolonged operation during the holding phase, a long-term output current limit is set, and a real-time sampling circuit monitors the output current to ensure it does not exceed this limit. The specific clutch state switching steps are as follows:

[0040] S1: The vehicle controller requests the clutch controller to enter the engagement phase, and the clutch controller enters the engagement phase;

[0041] S2: When the clutch controller enters the engagement stage, if the conditions for switching from the engagement stage to the holding stage are met, the vehicle controller requests the clutch controller to enter the holding stage, and the clutch controller enters the holding stage.

[0042] S3: When the conditions for switching from the engagement phase to the holding phase are not met, if the duration for which the vehicle controller requests the clutch controller to enter the engagement phase is greater than or equal to the set duration H, the clutch controller will issue an engagement timeout alarm. If the duration for which the vehicle controller requests the clutch controller to enter the engagement phase is less than the set duration H, the process returns to step S1.

[0043] S3-1: When the clutch controller alarms for engagement timeout, the vehicle controller requests the clutch controller to enter the disengagement phase and maintain it for the set duration L. The clutch controller then responds by entering the opening phase and returns to step S1.

[0044] This method mobilizes the vehicle controller to assist in establishing an overheat protection mechanism for the clutch solenoid coil, introduces a current closed-loop circuit, and improves the accuracy of the current controller.

[0045] Example 2

[0046] Reference Figures 2-4The second embodiment of the present invention provides an electromagnetic clutch coil connection device, which includes a housing 100, a first connecting component 200 and a second connecting component 300. The housing 100 can be installed on the outer housing of the electromagnetic clutch or can be placed in any position as a connector. The first connecting component 200 is mainly used to connect bare wires with soft copper cores, while the second connecting component 300 is used to connect wires with rigid connectors.

[0047] Specifically, the housing 100 has sockets 101 on its surface. In this example, the sockets 101 can be provided in three pairs, with two pairs for bare wire connections of soft copper cores and one pair for wire connections with rigid connectors.

[0048] Preferably, the first connecting component 200 includes a fastener 201 disposed at the socket 101 and a connector 202 disposed at one end of the fastener 201. The fastener 201 can firmly fix the bare copper core wire, which is convenient and quick. The connector 202 is used to electrically connect the wires at different sockets 101.

[0049] Preferably, the second connecting assembly 300 includes a clamping member 301 disposed at one of the sets of sockets 101 and an anti-loosening member 302 disposed on one side of the clamping member 301. The clamping member 301 can firmly fix the wire with the rigid connector to the socket 101, while the anti-loosening member 302 can ensure that the clamping member 301 can firmly clamp the wire when it encounters vibration, preventing it from falling off. Moreover, within a certain intensity, the stronger the vibration, the tighter the clamping.

[0050] In use, firstly, the soft copper core wire led from the internal coil of the electromagnetic clutch is fixedly connected to the housing 100 using fasteners 201. At this point, the housing 100 can be fixed to the outer housing of the clutch. Then, the external input current wire is connected to the housing 100. If the external wire is also a soft copper core wire, it can be fixed using fasteners 201. If it is a wire with a rigid connector, it can be fixed using clamping parts 301. Anti-loosening parts 302 prevent the wire from falling off when the housing 100 vibrates.

[0051] Example 3

[0052] Reference Figures 2-8 This is the third embodiment of the present invention, which is based on the previous embodiment.

[0053] Specifically, the fastener 201 includes a knob 201a disposed outside the housing 100, and a threaded post 201b disposed on one side of the knob 201a. The threaded post 201b has a moving groove 201b-1 in its middle, and the threaded post 201b is threadedly engaged with the housing 100. Rotating the knob 201a controls the threaded post 201b to screw in and out of the housing 100, thus controlling the tightening and loosening of the wire.

[0054] Preferably, the fastener 201 further includes a clamping plate 201c disposed inside the movable groove 201b-1, and a first spring 201d disposed between the clamping plate 201c and the threaded post 201b. The clamping plate 201c is slidably engaged with the movable groove 201b-1, and the two ends of the first spring 201d are fixedly connected to the clamping plate 201c and the threaded post 201b, respectively. The clamping plate 201c is divided into two parts that can move relative to each other. The first spring 201d is a tension spring. Under normal conditions, the two clamping plates 201c are separated from each other, and they only come together when compressed. The gap between them is used to place wires. The clamping plate 201c is made of conductive metal.

[0055] Preferably, the end of the clamping plate 201c is further provided with a conical block 201c-1, the surface of which is threaded, and the middle of the clamping plate 201c is further provided with a winding groove 201c-2. When the wire is clamped between the two clamping plates 201c, and then rotated, the wire will be wound around the winding groove 201c-2 in the middle of the clamping plate 201c. This can further fix the wire and keep the wire tightly fitted. When the two conical blocks 201c-1 are put together, they can form a complete cone shape.

[0056] Preferably, the connecting member 202 includes a connecting block 202a disposed outside the conical block 201c-1 and a connecting piece 202b disposed on one side of the connecting block 202a. The connecting block 202a also has a conical groove 202a-1 inside, and a threaded groove on the surface of the conical groove 202a-1. A spring piece 202b-1 is disposed at the other end of the connecting piece 202b. One end of the connecting piece 202b is fixedly connected to the connecting block 202a, and the other end is fixedly connected to the spring piece 202b-1. The conical groove 202a-1 engages with the conical block 201c-1. As the threaded post 201b gradually screws inward, the two conical blocks 201c-1 gradually enter the conical groove 202a-1. During rotation, the two conical blocks 201c-1 gradually approach each other, and similarly, the two clamping plates 201c also gradually approach each other, thus securing the wire.

[0057] Preferably, the clamping member 301 includes a clamping block 301a disposed on one side of the insertion hole 101, a second spring 301b disposed at the end of the clamping block 301a, and a movable sleeve 301c disposed outside the second spring 301b, the movable sleeve 301c slidingly engaging with the interior of the housing 100. The end of the clamping block 301a is arc-shaped, with smooth edges to facilitate the insertion and compression of the rigid connector. It can conform to the surface of the cylindrical rigid connector. The second spring 301b is a compression spring, which can provide a certain clamping force to the clamping block 301a.

[0058] Furthermore, the anti-loosening component 302 includes a connecting rod 302a disposed on one side of the movable sleeve 301c. The connecting rod 302a is rotatably engaged with the inside of the housing 100 via a rotating shaft 302b. One end of the connecting rod 302a is slidably and rotatably engaged with the movable sleeve 301c, and the other end of the connecting rod 302a is provided with a wedge block 302a-1. When the connecting rod 302a moves in one direction, the end connected to the movable sleeve 301c can push the movable sleeve 301c to move linearly in the direction of the wire, thereby causing the clamping block 301a to further clamp the wire connector.

[0059] The anti-loosening component 302 also includes a push rod 302e disposed between the connecting rods 302a. The two ends of the push rod 302e are also provided with sliding pins 302e-1, which cooperate with the wedge block 302a-1. The side of the push rod 302e is also provided with an unlocking rod 302e-2. When the push rod 302e is moved upward in the direction shown in the figure, the sliding pins 302e-1 at both ends of the push rod 302e will push against the wedge block 302a-1 and move, so that the connecting rod 302a will rotate, thereby further applying pressure to the clamping block 301a.

[0060] The anti-loosening component 302 also includes a third spring 302f disposed at the bottom of the top rod 302e, a pull rope 302c disposed above the top rod 302e, and a weight 302d disposed at one end of the pull rope 302c. The other end of the pull rope 302c is fixedly connected to the top rod 302e, and both ends of the third spring 302f are fixedly connected to the top rod 302e and the interior of the housing 100, respectively. The third spring 302f is a compression spring, which can always apply a force to the top rod 302e. When vibration or shaking occurs, the weight 302d will continuously pull the pull rope 302c, and the pull rope 302c will continuously pull the top rod 302e to compress the connecting rod 302a. Through this step-by-step transmission, the clamping block 301a will continuously apply clamping force to the wire, thus achieving the effect of the stronger the vibration, the tighter the clamping.

[0061] In use, first insert the soft copper core wire led from the internal coil of the electromagnetic clutch into the socket 101 on the housing 100. Then, rotate the knob 201a to continuously move the threaded post 201b towards the housing 100. During this process, when the conical block 201c-1 at the end of the clamping plate 201c enters the conical groove 202a-1 in the connecting block 202a, they will gradually move closer together. The wire is clamped by the two clamping plates 201c and simultaneously wound around the winding groove 201c-2, fixing the wire and ensuring a stable wire connection. The housing 100 can be fixed to the outer housing of the clutch or left unfixed in any location. If the input wire is a soft copper core wire, it can be inserted into another pair of sockets 101, with the same operation as described above. If the input wire is a wire with a rigid connector, the rigid connector can be inserted into a specific socket 101. When the rigid connector is inserted, it connects to the spring 202b-1 on the connecting piece 202b, forming an electrical connection. Simultaneously, it is pressed down by the clamping block 301a, with the second spring 301b at the end of the clamping block 301a providing clamping force. When shaking or vibration occurs, the drop block 302d continuously pulls the pull rope 302c, which in turn continuously pulls the top rod 302e, squeezing the wedge block 302a-1 on the connecting rod 302a. This causes the connecting rod 302a to rotate. When the connecting rod 302a rotates, its other end pushes the moving sleeve 301c to move towards the rigid connector, further clamping the rigid connector with the clamping block 301a. This ensures that the stronger the vibration, the tighter the clamping, preventing the wire from falling off. If you need to remove the wire, simply press the unlock lever 302e-2 to slowly pull the wire out.

[0062] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An electromagnetic clutch coil connection device, characterized in that: Connecting device (C), comprising, The housing (100) has a socket (101) on its surface. The first connecting assembly (200) includes a fastener (201) disposed at the socket (101), and a connecting member (202) disposed at one end of the fastener (201); and, The second connecting assembly (300) includes a clamping member (301) disposed at one of the sets of the sockets (101) and an anti-loosening member (302) disposed on one side of the clamping member (301). The clamping member (301) includes a clamping block (301a) disposed on one side of the insertion hole (101), a second spring (301b) disposed at the end of the clamping block (301a), and a movable sleeve (301c) disposed outside the second spring (301b), the movable sleeve (301c) slidingly engaging with the interior of the housing (100); The anti-loosening component (302) includes a connecting rod (302a) disposed on one side of the movable sleeve (301c). The connecting rod (302a) is rotatably engaged with the interior of the housing (100) via a rotating shaft (302b). One end of the connecting rod (302a) is slidably and rotatably engaged with the movable sleeve (301c). The other end of the connecting rod (302a) is provided with a wedge block (302a-1). The anti-loosening component (302) also includes a top rod (302e) disposed between the connecting rods (302a). The top rod (302e) is also provided with sliding pins (302e-1) at both ends. The sliding pins (302e-1) cooperate with the wedge block (302a-1). The side of the top rod (302e) is also provided with an unlocking rod (302e-2). The anti-loosening component (302) also includes a third spring (302f) disposed at the bottom of the top rod (302e), a pull rope (302c) disposed above the top rod (302e), and a weight (302d) disposed at one end of the pull rope (302c). The other end of the pull rope (302c) is fixedly connected to the top rod (302e), and both ends of the third spring (302f) are fixedly connected to the top rod (302e) and the interior of the housing (100), respectively.

2. The electromagnetic clutch coil connection device as described in claim 1, characterized in that: The fastener (201) includes a knob (201a) disposed outside the housing (100) and a threaded post (201b) disposed on one side of the knob (201a). The threaded post (201b) has a moving groove (201b-1) in the middle and the threaded post (201b) is threadedly engaged with the housing (100).

3. The electromagnetic clutch coil connection device as described in claim 2, characterized in that: The fastener (201) further includes a clamping plate (201c) disposed inside the movable groove (201b-1) and a first spring (201d) disposed between the clamping plate (201c) and the threaded post (201b). The clamping plate (201c) is slidably engaged with the movable groove (201b-1), and the two ends of the first spring (201d) are fixedly connected to the clamping plate (201c) and the threaded post (201b) respectively.

4. The electromagnetic clutch coil connection device as described in claim 3, characterized in that: The end of the clamping plate (201c) is also provided with a conical block (201c-1), the surface of the conical block (201c-1) is provided with threads, and the middle part of the clamping plate (201c) is also provided with a winding groove (201c-2).

5. The electromagnetic clutch coil connection device as described in claim 4, characterized in that: The connecting component (202) includes a connecting block (202a) disposed outside the conical block (201c-1) and a connecting piece (202b) disposed on one side of the connecting block (202a). The connecting block (202a) is also provided with a conical groove (202a-1) inside. The surface of the conical groove (202a-1) is provided with a threaded groove. The other end of the connecting piece (202b) is also provided with a spring piece (202b-1). One end of the connecting piece (202b) is fixedly connected to the connecting block (202a), and the other end is fixedly connected to the spring piece (202b-1). The conical groove (202a-1) cooperates with the conical block (201c-1).

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