Electromagnet assembly, braking device with same and vehicle

Abstract

The invention relates to the field of brake calipers, in particular to an electromagnet assembly, a brake device with the electromagnet assembly and a vehicle, the electromagnet assembly comprises a movable iron core, a magnet coil winding structure and / or a static iron core, and damping objects are arranged between the movable iron core and the magnet coil winding structure or / and between the static iron core and the movable iron core; the electromagnet assembly further comprises an oil storage mechanism used for supplementing damping objects. A damping object in the oil storage mechanism can enter an area between the movable iron core and the magnet coil winding structure or / and an area between the static iron core and the movable iron core; through the arrangement of the oil storage mechanism, a damping object in the oil storage mechanism can be slowly supplemented into an area between the movable iron core and the magnet coil winding structure or an area between the static iron core and the movable iron core; therefore, the sufficiency of damping objects between the movable iron core and the magnet coil winding structure or between the static iron core and the movable iron core is guaranteed, the noise reduction effect of the electromagnet assembly is guaranteed, and the service life of the electromagnet assembly is prolonged.

Description

Technical Field

[0001] This invention relates to the field of brake calipers, and more specifically to an electromagnet assembly and a braking device and vehicle having the electromagnet assembly. Background Technology

[0002] In modern automotive braking systems, electromagnet components are widely used as parking lock actuators.

[0003] A typical electromagnet assembly mainly includes an outer casing, a through-type push rod shaft, a stationary iron core, a moving iron core, and a magnet coil winding structure.

[0004] When the braking system needs to be locked or released, the moving iron core moves rapidly along the axial direction under the action of electromagnetic force, so that the push rod shaft engages or disengages from the locking groove of the locking gear.

[0005] Because electromagnets need to engage or disengage in a very short time, violent collisions often occur between the moving and stationary iron cores, producing significant metallic collision noise.

[0006] One common method to reduce this noise is:

[0007] Damping grease or damping paste is applied between the contact surfaces of the moving iron core and the stationary iron core to absorb impact energy.

[0008] However, the above solution has obvious flaws:

[0009] Damping grease is easily squeezed out or splashed under repeated high-speed impacts from an electromagnet, causing the lubrication / damping interface to fail rapidly and resulting in poor noise reduction durability. Summary of the Invention

[0010] The purpose of this invention is to provide an electromagnet assembly that can supplement damping between the moving iron core and the magnet coil winding structure or between the stationary iron core and the moving iron core.

[0011] Electromagnet components that effectively reduce internal noise.

[0012] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0013] An electromagnet assembly includes a moving iron core, a magnet coil winding structure, and / or a stationary iron core, wherein a damping element is provided between the moving iron core and the magnet coil winding structure or / and between the stationary iron core and the moving iron core; the electromagnet assembly further includes an oil storage mechanism for replenishing the damping element; the oil storage mechanism contains the damping element; the damping element in the oil storage mechanism can enter between the moving iron core and the magnet coil winding structure or / and between the stationary iron core and the moving iron core.

[0014] The oil storage mechanism includes an oil storage tank disposed on the magnet coil winding structure and / or the moving iron core;

[0015] The oil storage tank is equipped with damping material;

[0016] The oil storage tank is connected to the area between the moving iron core and the magnet coil winding structure and / or between the stationary iron core and the moving iron core.

[0017] The magnet coil winding structure includes a coil frame, and the oil storage mechanism includes an oil storage tank disposed on the coil frame.

[0018] The coil frame is provided with an assembly through hole; each end of the coil frame is provided with an oil storage mechanism; the oil storage mechanism at the end of the coil frame includes an oil storage groove provided on the inner wall of the assembly through hole.

[0019] The oil storage tank in the oil storage mechanism at the end of the coil frame includes an upper connecting groove and / or a single groove disposed on the inner wall of the assembly through hole.

[0020] The oil storage tank in the oil storage mechanism at the end of the coil frame includes multiple individual tanks, which are distributed on the inner wall of the assembly through hole; the individual tanks in each oil storage mechanism are connected to each other through an upper connecting slot.

[0021] The oil storage tank is one of the following: annular, rectangular, arc-shaped, or irregularly shaped tank structures.

[0022] The oil storage tank provided on the moving iron core is an annular groove.

[0023] The stationary iron core includes an upper stationary iron core and a lower stationary iron core disposed at both ends of the outer casing; the upper stationary iron core and / or the lower stationary iron core have a flow gap with the adjacent oil storage tank.

[0024] The damping material is damping grease and / or damping paste and / or damping coating.

[0025] A braking device includes the electromagnet assembly.

[0026] The vehicle includes the aforementioned braking device or the aforementioned electromagnet assembly.

[0027] The advantages of this invention are:

[0028] This invention discloses an electromagnet assembly, a braking device having the electromagnet assembly, and a vehicle.

[0029] The electromagnet assembly disclosed in this invention can reduce the operating noise of the electromagnet assembly by setting damping material.

[0030] Meanwhile, through the setting of the oil storage mechanism, the damping material in the oil storage mechanism can be gradually replenished to the area between the moving iron core and the magnet coil winding structure or between the stationary iron core and the moving iron core; thereby ensuring the sufficiency of the damping material between the moving iron core and the magnet coil winding structure or between the stationary iron core and the moving iron core, thus ensuring the noise reduction effect of the electromagnet assembly and extending the service life of the electromagnet assembly. Attached Figure Description

[0031] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0032] Figure 1 This is a schematic diagram of the electromagnet assembly in this invention.

[0033] Figure 2 This is a schematic diagram of the electromagnet assembly in its retracted state in this invention.

[0034] Figure 3 This is a schematic diagram of the electromagnet assembly in the extended state in this invention.

[0035] Figure 4 This is a schematic diagram of the structure of the electromagnet assembly and the locking gear in this invention.

[0036] Figure 5 This is a schematic diagram of the structure of the moving iron core in this invention when an oil storage tank is provided.

[0037] Figure 6 This is a schematic diagram of the coil frame structure in this invention.

[0038] Figure 7 This is a schematic diagram of the structure of the electromagnet assembly and the locking gear used in this invention.

[0039] Figure 8 This is a schematic diagram of the structure of the electromagnet assembly arranged on the motor housing in this invention.

[0040] The markings in the above figures are all:

[0041] 1. Motor housing; 1a. Mounting cavity; 2. Electromagnet assembly; 2a. End cap; 2b. Outer housing; 2c. Push rod shaft; 2d. Upper stationary iron core; 2e. Busbar; 2f. Pin; 2g. Lower stationary iron core; 2h. Coil winding; 2i. Moving iron core; 2j. Permanent magnet; 2k. Damping material; 2m. Coil frame; 2m1. Flow gap; 2m2. Assembly through hole; 2p. Oil reservoir; 2p1. Individual slot; 2p2. Upper connecting slot; 3. Locking gear; 3a. Locking slot; 4. Gear shaft; 5. ECU housing; 6. Circuit board; 7. ECU housing cover; 8. Fixing screws. Detailed Implementation

[0042] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and the description of the preferred embodiments.

[0043] This invention discloses an electromagnet assembly, including a moving iron core 2i, a magnet coil winding structure, and / or a stationary iron core. A damping element 2k is provided between the moving iron core 2i and the magnet coil winding structure, and / or between the stationary iron core and the moving iron core 2i. The electromagnet assembly also includes an oil storage mechanism for supplementing the damping element 2k. The oil storage mechanism also has a damping element 2k. The damping element 2k in the oil storage mechanism can enter the region between the moving iron core 2i and the magnet coil winding structure, and / or between the stationary iron core and the moving iron core 2i. The electromagnet assembly disclosed in this invention can reduce the operating noise of the electromagnet assembly by setting the damping element 2k.

[0044] By setting up an oil storage mechanism, the damping material 2k in the oil storage mechanism can be gradually replenished to the area between the moving iron core 2i and the magnet coil winding structure or between the stationary iron core and the moving iron core 2i; thereby ensuring the sufficiency of the damping material 2k between the moving iron core 2i and the magnet coil winding structure or between the stationary iron core and the moving iron core 2i, thus ensuring the noise reduction effect of the electromagnet assembly and extending the service life of the electromagnet assembly.

[0045] In this invention, the damper 2k in the oil storage mechanism enters the region between the moving iron core 2i and the magnet coil winding structure or between the stationary iron core and the moving iron core 2i in a way that the movement of the moving iron core drives the movement of the damper, thereby enabling the damper to enter the corresponding region.

[0046] In this invention, there are various types of oil storage mechanisms. The oil storage mechanism described below can be used, or an external oil storage mechanism can be selected. Theoretically, any oil storage mechanism that can realize the replenishment of the damping material 2k between the moving iron core 2i and the magnet coil winding structure and between the stationary iron core and the moving iron core 2i can be used.

[0047] In essence, the oil storage mechanism disclosed in this invention can be an external or internal mechanism. Its essential purpose is to supplement the damping material 2k between the moving iron core 2i and the magnet coil winding structure and between the stationary iron core and the moving iron core 2i through the oil storage mechanism. In other words, the oil storage mechanism disclosed in this invention is essentially a damping material 2k supplementation mechanism.

[0048] The electromagnet assembly 2 disclosed in this invention includes a housing 2b, a push rod shaft 2c, and a stationary iron core, a moving iron core 2i, and a magnet coil winding structure disposed within the housing 2b. The push rod shaft 2c is arranged through a core hole of the stationary iron core and is fixedly connected to the moving iron core 2i. A noise reduction structure is provided between the moving iron core 2i and the magnet coil winding structure and / or between the stationary iron core and the moving iron core 2i. The noise reduction structure includes a damper 2k located between the moving iron core 2i and the magnet coil winding structure and / or between the stationary iron core and the moving iron core 2i. Specifically, the damper 2k is provided between the moving iron core 2i and the magnet coil winding structure and / or between the stationary iron core and the moving iron core 2i. The electromagnet assembly disclosed in this invention can reduce the operating noise of the electromagnet assembly by setting the damper 2k.

[0049] Furthermore, the electromagnet assembly described in this invention also includes an oil reservoir for replenishing the damping material 2k between the moving iron core 2i and the magnet coil winding structure, and between the stationary iron core and the moving iron core 2i; the damping material 2k in the oil reservoir can enter the region between the moving iron core 2i and the magnet coil winding structure and / or between the stationary iron core and the moving iron core 2i; the process by which the damping material 2k replenishes the above-mentioned region in the oil reservoir is as follows:

[0050] Combination Figure 4 , Figure 4 The oil storage tank 2p is located on the magnet coil winding structure, specifically at the end of the inner wall of the coil frame 2m. The main feature of this invention is that oil storage tanks 2p are provided at both ends of the coil frame 2m.

[0051] Since the damping material 2k in the oil reservoir 2p is in the form of paste or grease, it will accumulate in the oil reservoir 2p. Because the oil reservoir 2p and the moving iron core 2i are connected in their movement space, and the contact between the moving iron core 2i and the stationary iron core will cause vibration, the damping material 2k accumulated in the oil reservoir 2p will come into contact with the end surface of the moving iron core 2i. Due to the adhesiveness of the damping material 2k, as the moving iron core 2i reciprocates, the damping material 2k will be slowly carried into the movement space or gap of the moving iron core 2i, thus forming a damping material 2k replenishment process, so that there is always damping material 2k in the movement gap of the moving iron core 2i, thereby maintaining a longer noise reduction effect.

[0052] Combination Figure 5 , Figure 5 The oil storage tank 2p is located on the outer wall of the moving iron core 2i; at this time, the oil storage tank 2p is an annular tank structure.

[0053] about Figure 5 Oil storage tank 2p in the middle, Figure 5 In the middle oil storage tank 2p, the damper 2k and Figure 4The process of replenishing the damping material 2k is similar and will not be elaborated here. Essentially, the movement space of the oil reservoir 2p and the moving iron core 2i is connected, and the contact between the moving iron core 2i and the stationary iron core will cause vibration. The vibration will cause the damping material 2k accumulated in the oil reservoir 2p to contact the end surface of the moving iron core 2i. Due to the adhesiveness of the damping material 2k, as the moving iron core 2i reciprocates, the damping material 2k will be slowly carried into the movement space or gap of the moving iron core 2i, thus forming a damping material 2k replenishment process, so that there is always damping material 2k in the movement gap of the moving iron core 2i, thereby maintaining a longer noise reduction effect.

[0054] In addition, the electromagnet assembly disclosed in this invention is generally horizontal, so the above process can be implemented.

[0055] The oil storage mechanism described in this invention includes an oil storage tank 2p disposed on the magnet coil winding structure and / or the moving iron core 2i; that is, the oil storage tank 2p can be disposed on the magnet coil winding structure; or it can be disposed on the moving iron core 2i; of course, it can also be disposed on both as needed; the specific placement position can be selected as needed; theoretically, any position that can achieve the replenishment of the damping material 2k between the moving iron core 2i and the magnet coil winding structure and / or the stationary iron core and the moving iron core 2i is feasible.

[0056] Generally, the magnet coil winding structure is a ring structure, while the moving iron core 2i is a columnar structure; therefore, the oil storage mechanism described in this invention includes an oil storage tank 2p disposed on the inner wall of the magnet coil winding structure and / or the outer wall of the moving iron core 2i; the oil storage tank 2p is provided with a damping element 2k; the damping element 2k here is essentially the same as the damping element 2k between the moving iron core 2i and the magnet coil winding structure and / or between the stationary iron core and the moving iron core 2i.

[0057] In this invention, the damping material 2k in the oil reservoir 2p can enter the area between the moving iron core 2i and the magnet coil winding structure and / or the area between the stationary iron core and the moving iron core 2i. Through the setting of the oil storage mechanism, the damping material 2k in the oil reservoir 2p can slowly replenish the damping material 2k lost in the electromagnet assembly, thereby forming a damping material 2k replenishment process, thus ensuring the noise reduction effect of the damping material 2k, and thus extending the service life of the electromagnet assembly.

[0058] In this invention, the electromagnet assembly includes a housing 2b, a push rod shaft 2c, a stationary iron core, a moving iron core 2i, and a magnet coil winding structure. These are the basic components of the electromagnet assembly. The push rod shaft is arranged through the core hole of the stationary iron core and is fixedly connected to the moving iron core 2i. Here, "through" mainly means that the push rod shaft is arranged by passing through the stationary iron core. The above structure is the structural basis for the electromagnet assembly to realize its basic functions.

[0059] The noise reduction structure includes a damper 2k located between the moving iron core 2i and the magnet coil winding structure or between the stationary iron core and the moving iron core 2i. The function of the damper 2k is to form a buffer between the moving iron core 2i and the stationary iron core, or between the moving iron core 2i and the magnet coil winding structure, to reduce the impact and vibration generated by relative motion, thereby reducing noise.

[0060] For example, when the electromagnet is attracted, the moving iron core 2i moves closer to the stationary iron core, and the damper 2k can absorb some of the energy, thus avoiding violent collisions between the moving iron core 2i and the stationary iron core and generating a lot of noise.

[0061] The oil storage mechanism is provided to supplement the damping material 2k between the moving iron core 2i and the magnet coil winding structure and / or between the stationary iron core and the moving iron core 2i; the oil storage mechanism includes an oil storage tank 2p provided on the inner wall of the magnet coil winding structure or the outer wall of the moving iron core 2i.

[0062] The oil reservoir 2p is filled with damping material 2k, and the damping material 2k in the oil reservoir 2p can enter the area between the moving iron core 2i and the magnet coil winding structure or between the stationary iron core and the moving iron core 2i; this design can ensure the continuous supply of damping material 2k, so that the noise reduction effect can be maintained for a long time.

[0063] For example, during the long-term operation of the electromagnet assembly, the damping material 2k may decrease due to wear and other reasons. The damping material 2k in the oil reservoir 2p can be replenished to the required position in a timely manner to maintain the effectiveness of the noise reduction structure.

[0064] By setting a noise reduction structure with 2k damping material, the noise generated by the electromagnet assembly during the attraction and release process is effectively reduced, improving the operating environment of the equipment and making it more suitable for use in environments with high noise requirements.

[0065] The design of the oil storage mechanism ensures a continuous supply of damping material 2k, enabling the noise reduction performance of the electromagnet assembly to remain stable over a long period of time, thereby improving the service life and reliability of the electromagnet assembly.

[0066] The electromagnet assembly 2 disclosed in this invention can reduce the impact noise of the electromagnet itself; and by setting a damper 2k, the internal impact noise of the electromagnet can be reduced, thereby reducing the locking noise of the entire system.

[0067] In this invention, the damper 2k is arranged in the area between the moving iron core 2i and the magnet coil winding structure, as well as between the stationary iron core and the moving iron core 2i. This arrangement can reduce the kinetic energy of the moving iron core 2i and reduce the impact noise between the moving iron core 2i and the stationary iron core.

[0068] Meanwhile, the damping material 2k in the oil storage mechanism of the present invention can slowly enter the area between the moving iron core 2i and the magnet coil winding structure, as well as between the stationary iron core and the moving iron core 2i, playing a supplementary role. That is, a process of supplementing the damping material 2k is formed, which can ensure the sufficiency of the damping material 2k between the above components and ensure the noise reduction effect of the damping material 2k; at the same time, it improves the service life of the electromagnet assembly.

[0069] The electromagnet assembly 2 disclosed in this invention is mainly applicable to the field of brake calipers, and also mainly applicable to EMB brake calipers; however, this does not mean that it cannot be applied to other caliper bodies.

[0070] The electromagnet assembly 2 disclosed in this invention mainly includes an outer shell 2b, a push rod shaft 2c, and a stationary iron core, a moving iron core 2i, and a magnet coil winding structure disposed within the outer shell 2b. The push rod shaft 2c is arranged through the core hole of the stationary iron core and is fixedly connected to the moving iron core 2i. The stationary iron core includes an upper stationary iron core 2d and a lower stationary iron core 2g that are fixedly disposed relative to each other. The magnet coil winding structure includes a coil frame 2m, on which a permanent magnet 2j and a coil winding 2h are disposed. The upper stationary iron core 2d is fixedly disposed on the end cap 2a of the outer shell 2b, and the lower stationary iron core 2g is fixedly disposed on the outer shell 2b. The push rod shaft 2c is arranged through the core hole of the two stationary iron cores and is fixedly connected to the moving iron core 2i, which is located between the two stationary iron cores.

[0071] The moving iron core 2i can reciprocate within a 2m coil frame.

[0072] In this invention, the damper 2k essentially reduces the running speed of the moving iron core 2i, so that the moving iron core 2i slows down when it approaches the stationary iron core, thereby reducing the collision kinetic energy and thus reducing noise.

[0073] The damping material 2k disclosed in this invention is required to increase the friction between the coil frame 2m and the moving iron core 2i, thereby reducing the running speed of the moving iron core 2i and thus achieving the purpose of reducing noise.

[0074] Furthermore, the magnet coil winding structure described in this invention includes a coil frame 2m, which is the main structure of the magnet coil winding structure. An assembly through hole 2m2 is provided on the coil frame 2m. The assembly through hole 2m2 facilitates the arrangement and placement of the moving iron core 2i.

[0075] In addition, the oil storage mechanism described in this invention also includes an oil storage tank 2p disposed on the coil frame 2m and / or the moving iron core 2i; the oil storage tank 2p is provided with a damping material 2k; specifically, the oil storage tank 2p on the coil frame 2m is generally disposed on the inner wall of the mounting through hole 2m2; while the oil storage tank 2p on the moving iron core 2i is disposed on the outer wall of the moving iron core 2i; in this invention, the oil storage tank 2p is provided with a damping material 2k; it is required that during subsequent use, this damping material 2k can slowly flow to the area between the moving iron core 2i and the magnet coil winding structure and between the stationary iron core and the moving iron core 2i, playing a supplementary role, that is, forming a damping material 2k supplementation process, which can ensure the sufficiency of the damping material 2k between the above components, ensure the noise reduction effect of the damping material 2k; and at the same time improve the service life of the electromagnet assembly.

[0076] In this invention, the damping material 2k in the oil reservoir 2p is in the form of paste or grease. The damping material 2k will accumulate in the oil reservoir 2p. Since the oil reservoir 2p and the moving iron core 2i are connected in their movement space, and the contact between the moving iron core 2i and the stationary iron core will cause vibration, the damping material 2k accumulated in the oil reservoir 2p will come into contact with the end surface of the moving iron core 2i. Due to the adhesiveness of the damping material 2k, as the moving iron core 2i reciprocates, the damping material 2k will be slowly carried into the movement gap of the moving iron core 2i, thereby forming a damping material 2k replenishment process, so that there is always damping material 2k in the movement gap of the moving iron core 2i, thus maintaining a longer noise reduction effect.

[0077] In this invention, the movement space of the moving iron core 2i is mainly the assembly through hole 2m2 in the coil frame 2m.

[0078] Furthermore, in this invention, the oil storage tank 2p can be one of the following: annular, rectangular, arc-shaped, or irregularly shaped tank structures; that is, the structure of the oil storage tank 2p can be designed in various styles, and can be designed according to needs. The main feature is that the oil storage tank 2p stores damping material 2k, which can be used to supplement the damping material 2k in the area between the moving iron core 2i and the magnet coil winding structure, as well as between the stationary iron core and the moving iron core 2i, during subsequent use.

[0079] The above-mentioned ring generally refers to a circular ring structure, rectangle generally refers to a rectangle when projected horizontally, arc generally refers to an arc when projected horizontally; irregular shape is essentially a polygonal structure.

[0080] Furthermore, in this invention, the oil storage mechanism includes an oil storage tank 2p disposed on the inner wall of the coil frame 2m and / or the outer wall of the moving iron core 2i; in other words, the location of the oil storage tank 2p can be designed as needed. In this invention, the oil storage tank 2p can be disposed on the inner wall of the coil frame 2m, or on the outer wall of the moving iron core 2i, or both on the inner wall of the coil frame 2m and the outer wall of the moving iron core 2i; the oil storage tank 2p and the damping element 2k can be disposed at different locations as needed for deceleration and damping element 2k supplementation.

[0081] Additionally, it should be noted that the oil reservoir 2p is located on the inner wall of the coil frame 2m, which mainly refers to its location on the inner wall of the assembly through hole 2m2.

[0082] In this invention, an oil storage mechanism is provided at both ends of the coil frame 2m; this mainly refers to providing an oil storage mechanism at both ends of the assembly through hole 2m2; however, it does not mean that an oil storage mechanism cannot be provided in the assembly through hole 2m2 or other areas of the coil frame 2m.

[0083] The oil storage mechanisms set at both ends of the coil frame 2m are mainly arranged on the outside of the upper stationary iron core 2d and the lower stationary iron core 2g; this facilitates the replenishment of damping material 2k to the moving iron core 2i, the magnet coil winding structure, and the area between the stationary iron core and the moving iron core 2i.

[0084] The essential purpose is to reduce speed and isolate the object by adding damping material 2k; and to reduce the noise generated when the moving iron core 2i and the stationary iron core collide.

[0085] In addition, the oil storage mechanism at the end of the coil frame 2m in this invention includes an oil storage groove 2p disposed on the inner wall of the coil frame 2m; the coil frame 2m in this invention is provided with an assembly through hole 2m2; the oil storage mechanism at the end of the coil frame 2m includes an oil storage groove 2p disposed on the inner wall of the assembly through hole 2m2; the oil storage groove 2p in the oil storage mechanism at the end of the coil frame 2m includes an upper connecting groove 2p2 and / or a single groove 2p1 disposed on the inner wall of the coil frame 2m; in this invention, the upper connecting groove 2p2 is an arc-shaped groove structure and is disposed at the end of the assembly through hole 2m2, while the single groove 2p1 is a recessed groove structure with a rectangular projection. The single groove 2p1 and the upper connecting groove 2p2 can be used separately or together; the specific choice depends on the design requirements.

[0086] Furthermore, in the oil storage mechanism at the end of the coil frame 2m described in this invention, the oil storage tank 2p includes multiple individual tanks 2p1, which are distributed on the inner wall of the assembly through hole 2m2. Adjacent individual tanks 2p1 are spaced apart. The multiple individual tanks 2p1 in the oil storage mechanism are connected by an upper connecting groove 2p2. In this invention, the individual tanks 2p1 extend along an axial direction parallel to the coil frame 2m. The purpose is to ensure the strength of the coil frame 2m while also allowing the damping material 2k in the oil storage tank 2p to flow out slowly through the individual tanks 2p1, facilitating subsequent replenishment of the damping material 2k.

[0087] The upper connecting groove 2p2 is generally arranged at both ends of the assembly through hole 2m2. Each individual groove 2p1 is connected to each other through the upper connecting groove 2p2, which facilitates the injection of damping material 2k into the individual groove 2p1 during production.

[0088] Meanwhile, in this invention, adjacent individual slots 2p1 can be spaced apart or connected to each other; spaced distribution can ensure the structural strength of the end of the coil frame 2m, while interconnection can optimize the storage volume of the damper 2k.

[0089] Furthermore, in this invention, the oil storage groove 2p provided on the outer wall of the moving iron core 2i is an annular groove; one or more oil storage grooves 2p can be provided on the outer wall of the moving iron core 2i, and the specific structure of the oil storage groove 2p can be designed as needed. In this invention, the oil storage groove 2p is an annular groove, the purpose of which is to facilitate the storage of the damping material 2k and its subsequent flow and discharge, so as to realize the replenishment of the damping material 2k between the moving iron core 2i and the coil frame 2m.

[0090] This allows for better control of the operating speed of the moving iron core 2i.

[0091] Furthermore, in this invention, the stationary iron core includes an upper stationary iron core 2d and a lower stationary iron core 2g disposed at both ends of the outer shell; specifically, the stationary iron core includes an upper stationary iron core 2d and a lower stationary iron core 2g that are relatively fixedly disposed at both ends of the outer shell 2b; the upper stationary iron core 2d is fixedly disposed on the end cap 2a of the outer shell 2b, the lower stationary iron core 2g is fixedly disposed on the outer shell 2b, the coil frame 2m is arranged inside the outer shell 2b, and the coil frame 2m, the moving iron core 2i, the upper stationary iron core 2d and the lower stationary iron core 2g are coaxially distributed.

[0092] In addition, in this invention, there is a flow gap 2m1 between the upper stationary iron core 2d and / or the lower stationary iron core 2g and the adjacent oil storage tank 2p; the setting of the flow gap 2m1 facilitates the outflow of the damping material 2k in the oil storage mechanism at the end of the coil frame 2m, and avoids the damping material 2k in the storage tank at the end of the coil frame 2m from being affected by the setting of the upper stationary iron core 2d and / or the lower stationary iron core 2g.

[0093] In this invention, the damping material 2k is a damping grease and / or a damping paste and / or a damping coating; the specific type can be selected as needed; the damping material 2k is a damping grease and / or a damping paste and / or a damping coating that is resistant to temperature shock; the properties of the damping material 2k are different from those of existing grease lubrication, providing a damping effect.

[0094] A braking device includes a locking gear 3 with a locking groove 3a, and an electromagnet assembly 2. The push rod shaft 2c in the electromagnet assembly 2 is used in conjunction with the locking groove 3a. The locking device disclosed in this invention is used to realize the locking function of the braking system. The locking device locks the system by extending and retracting the push rod shaft 2c in the bistable electromagnet assembly 2 and locking it with the locking gear 3.

[0095] This invention reduces the internal impact noise of the electromagnet by setting a noise reduction structure between the moving iron core 2i and the magnet coil winding structure, thereby reducing the locking noise of the entire system.

[0096] Meanwhile, the noise reduction structure disclosed in this invention is arranged in the area between the moving iron core 2i and the magnet coil winding structure. While realizing noise reduction inside the electromagnet assembly 2, it can also avoid or greatly reduce the subsequent damping material 2k being damaged by impact. It can effectively retain the damping material 2k, thereby allowing the electromagnet to maintain a longer noise reduction effect.

[0097] In this invention, the damper 2k can slow down the movement of the moving iron core 2i of the electromagnet to reduce impact noise. By using the above method to reduce impact noise from inside the electromagnet, the locking noise of the entire system is reduced.

[0098] A caliper assembly includes a motor housing 1; the motor housing 1 is provided with the braking device; the motor housing 1 is provided with an electromagnet mounting cavity 1a; the present invention facilitates the placement and installation of the electromagnet assembly 2 in the motor housing 1 by setting the electromagnet mounting cavity 1a, and the motor housing 1 is provided with an ECU housing 5, the ECU housing 5 being provided with a circuit board 6; the PIN pin 2F of the electromagnet assembly 2 passes through the ECU housing 5 and connects to the circuit board 6 inside the ECU housing 5; thus facilitating the ECU's control of the operation of the electromagnet assembly 2.

[0099] A vehicle, including the aforementioned braking device.

[0100] specific:

[0101] This invention discloses an electromagnet assembly 2, which is a low-noise electromagnet assembly 2, mainly comprising a housing 2b, a push rod shaft 2c, an end cap 2a, a coil winding 2h wound on a coil frame 2m within the housing 2b, a stationary iron core, a permanent magnet 2j, and a moving iron core 2i. The push rod shaft 2c is arranged through two holes in the stationary iron core, and the moving iron core 2i is arranged between the two stationary iron cores and fixedly connected to the push rod shaft 2c. A noise reduction structure is provided between the moving iron core 2i and the magnet coil winding structure, and / or between the stationary iron core and the moving iron core 2i. The noise reduction structure includes a damper 2k located between the moving iron core 2i and the magnet coil winding structure, and / or between the stationary iron core and the moving iron core 2i. The electromagnet assembly disclosed in this invention, through the provision of the damper 2k, can reduce the operating noise of the electromagnet assembly.

[0102] In addition, the electromagnet assembly described in this invention also includes an oil storage mechanism for replenishing the damping material 2k; the oil storage mechanism includes an oil storage tank 2p disposed on the inner wall of the magnet coil winding structure and / or the outer wall of the moving iron core 2i; the oil storage tank 2p is also provided with damping material 2k; the damping material 2k in the oil storage tank 2p can enter the area between the moving iron core 2i and the magnet coil winding structure and / or the stationary iron core and the moving iron core 2i; through the setting of the oil storage mechanism, the damping material 2k in the oil storage tank 2p can slowly replenish the damping material 2k lost in the electromagnet assembly, thereby forming a damping material 2k replenishment process, thereby ensuring the noise reduction effect of the damping material 2k, and thus extending the service life of the electromagnet assembly.

[0103] In this invention, the electromagnet assembly includes an outer shell, a push rod shaft, a stationary iron core, a moving iron core 2i, and a magnet coil winding structure. These are the basic components of the electromagnet assembly. The push rod shaft is arranged through the core hole of the stationary iron core and is fixedly connected to the moving iron core 2i. This is the structural basis for the electromagnet assembly to realize its basic functions.

[0104] The noise reduction structure includes a damper 2k located between the moving iron core 2i and the magnet coil winding structure or between the stationary iron core and the moving iron core 2i. The damper 2k forms a buffer between the moving iron core 2i and the stationary iron core, or between the moving iron core 2i and the magnet coil winding structure, reducing the impact and vibration generated by relative motion, thereby reducing noise. Through the damping effect of the damper 2k, the noise generated when the electromagnet assembly 2 operates is reduced.

[0105] In addition, the magnet coil winding structure described in this invention includes a coil frame 2m, on which an assembly through hole 2m2 is provided; the oil storage mechanism also includes an oil storage tank 2p disposed on the inner wall of the coil frame 2m and / or the outer wall of the moving iron core 2i; the oil storage tank 2p is located on the action path of the push rod shaft 2c; in use, there are damping elements 2k between the coil frame 2m and the moving iron core 2i, and between the moving iron core 2i and the stationary iron core. When the damping elements 2k in the above-mentioned intervals are lost in large quantities, damping elements 2k are replenished to the above-mentioned areas through the oil storage tank 2p. Through the damping effect of the damping elements 2k, the noise generated when the electromagnet assembly 2 operates is reduced.

[0106] In this invention, an oil storage mechanism is provided at each end of the coil frame 2m. Each oil storage mechanism includes an oil storage tank 2p, and a damping element 2k is provided in the oil storage tank 2p.

[0107] An oil reservoir 2p can also be installed on the moving iron core 2i, and a damping element 2k can also be installed inside the oil reservoir 2p on the moving iron core 2i.

[0108] The damping material 2k in the oil reservoir 2p can be added between the coil frame 2m and the moving iron core 2i and between the moving iron core 2i and the stationary iron core during subsequent use. This ensures that the damping material 2k in the electromagnet assembly is sufficient and can effectively reduce the running speed of the moving iron core 2i, thereby reducing the noise of the electromagnet assembly.

[0109] When the parking lock is engaged, the damping material 2k provides a damping effect when the moving iron core 2i and the upper stationary iron core 2d collide and come into contact, thereby reducing the impact noise.

[0110] When the vehicle is released from parking, the damping material 2k provides a damping effect when the moving iron core 2i and the lower stationary iron core 2g collide and come into contact, thereby reducing the impact noise.

[0111] An oil reservoir 2p is also provided on the outer wall of the moving iron core 2i. This oil reservoir 2p can supplement the damping material 2k between the moving iron core 2i and the coil frame 2m, so it can provide damping when the moving iron core 2i moves, reduce the movement speed of the moving iron core 2i and reduce impact noise.

[0112] The moving iron core 2i makes an attractive contact with the stationary iron core to provide holding force for parking lock and release.

[0113] An MGU assembly includes a locking gear 3 with a locking groove 3a, and an electromagnet assembly 2. The electromagnet locking head engages and disengages with the locking groove 3a of the locking gear 3 by extending and retracting, thereby achieving parking lock and release.

[0114] The present invention has the following technical effects:

[0115] Reduce the impact noise of the electromagnet's operation: By setting an oil reservoir 2p in the electromagnet's operating path and injecting damping material 2k into the oil reservoir 2p, the impact noise is reduced from inside the electromagnet, thereby reducing the locking noise of the entire system.

[0116] To address the durability issue of existing grease-based noise reduction solutions: In existing designs, adding damping material 2k can effectively reduce the impact noise of the electromagnet. However, because the electromagnet moves very quickly, damping material 2k is easily damaged by impact, thus weakening or even eliminating the noise reduction effect. Therefore, adding an oil reservoir 2p structure can effectively retain and replenish damping material 2k, thereby allowing the electromagnet to maintain a longer-lasting noise reduction effect.

[0117] An oil reservoir 2p is provided on the electromagnet's operating path in this invention, and a damping material 2k is injected into the oil reservoir 2p. The damping material 2k can slow down the movement of the moving iron core 2i of the electromagnet to reduce impact noise. By using the above method, the impact noise is reduced from inside the electromagnet, thereby reducing the locking noise of the entire system.

[0118] Meanwhile, the oil reservoir 2p has two functions: one is to supplement the damping material 2k, and the other is to better retain the damping material 2k inside the electromagnet, so that the electromagnet can have a stable and lasting noise reduction capability.

[0119] Example 1:

[0120] Electromagnet assembly 2 is installed in electromagnet mounting cavity 1a on motor housing 1. Gear shaft 4 is also installed on motor housing 1. Locking gear 3 is installed on gear shaft 4. ECU housing 5 is fixed to motor housing 1 by fixing screw 8. Circuit board 6 is installed in ECU housing 5. ECU cover 7 is fixedly connected to ECU housing 5. Busbar 2e in electromagnet assembly 2 passes through ECU housing 5 and is connected to circuit board 6.

[0121] Combination Figure 3-6 As can be seen, the locking groove 3a of the locking gear 3 is aligned with the position of the push rod shaft 2c. When the parking lock is engaged, the push rod shaft 2c extends and engages with the locking end face of the locking groove 3a of the locking gear 3, thereby achieving the locking function of the entire system. When the parking lock is released, the push rod shaft 2c retracts, releasing the contact between the push rod shaft 2c and the locking groove 3a, thereby achieving the release function of the entire system.

[0122] Combined Figure 2-5As shown, coil winding 2h is wound on coil frame 2m, permanent magnet 2j is arranged on coil frame 2m, located between coil winding 2h, lower stationary iron core 2g is installed at the bottom of outer shell 2b, coil frame 2m is assembled inside outer shell 2b, upper stationary iron core 2d is arranged on end cover 2a, end cover 2a is fixedly connected to the shell, push rod shaft 2c passes through the shaft hole of upper and lower stationary iron cores 2g, and moving iron core 2i is fixed to push rod shaft 2c, located between upper and lower stationary iron cores 2g, pin 2f is set in busbar 2e, and the assembled electromagnet... The push rod shaft 2c and the moving iron core 2i are fixed together to form a rod-shaft structure that moves axially. When locked, the moving iron core 2i of the electromagnet moves axially towards one end of the end cover 2a under the action of electromagnetic force. The locked state is maintained by the attraction between the moving iron core 2i and the end face of the upper stationary iron core 2d. When unlocked, the moving iron core 2i of the electromagnet moves axially towards the opposite end of the end cover 2a under the action of electromagnetic force. The unlocked state is maintained by the attraction between the moving iron core 2i and the end face of the lower stationary iron core 2g. Because the action time of the moving iron core 2i after energization is short, it is fast. The speed is very fast, and since both the moving iron core 2i and the stationary iron core are made of metal, the impact sound between the moving iron core 2i and the upper and lower stationary iron cores 2g is very loud, resulting in a lot of noise in the system. To solve the impact noise problem, it is proposed to set a damper 2k in the path of the electromagnet's movement to reduce noise. The purpose of setting the damper 2k is to slow down the axial movement of the moving iron core 2i. The damper 2k provides a certain damping effect, which can slow down the speed of the moving iron core 2i during axial movement. This allows the moving iron core 2i and the stationary iron core to have a relatively small speed when they impact and stick together, so the impact noise generated will also be relatively small. This solves the impact noise problem from the electromagnet itself. However, if the damper 2k is directly coated in the gap, the damper 2k will overflow from the gap due to impact, which is not durable. Therefore, an oil reservoir 2p structure is set on the coil frame 2m to inject the damper 2k. In this way, the damper 2k can be effectively kept inside the electromagnet assembly 2, so that the electromagnet maintains a stable and lasting noise reduction effect.

[0123] From the illustration Figure 8 It can be seen that the oil storage tank 2p set on the skeleton is an annular hollow structure. The oil storage tank 2p and the moving iron core 2i on one side can be made into an inner wall composed of multiple notches, which can facilitate the storage of damping material 2k and uniform supply to the surface of the moving iron core 2i.

[0124] Implementation Case 2:

[0125] Preferably, the 2p oil reservoir structure is placed at the upper and lower ends of the 2m coil frame. This provides a buffering and damping effect when the moving and stationary iron cores collide, thereby reducing noise. (See diagram below.) Figure 7(A cross-sectional diagram of an oil reservoir 2p on the moving iron core 2i) shows that an oil reservoir 2p structure can also be set on the outer wall of the moving iron core 2i; similarly, the damper 2k can be kept inside the electromagnet to provide a damping effect when the moving iron core 2i of the electromagnet moves, which can also achieve the same noise reduction effect as in the first implementation case. The principle of noise reduction is similar and will not be elaborated here.

[0126] In embodiments 1 and 2 above, when the damping material 2k between the moving iron core 2i and the magnet coil winding structure and between the stationary iron core and the moving iron core 2i is insufficient, the damping material 2k in the oil storage tank 2p in the adjacent oil storage mechanism can be supplemented to the above-mentioned area; ensuring the sufficiency of the damping material 2k between the moving iron core 2i and the magnet coil winding structure and between the stationary iron core and the moving iron core 2i.

[0127] It should be noted beforehand that the magnet coil winding structure is a higher-level concept, which includes the coil frame 2m, the coil winding 2h, and the permanent magnet, etc.

[0128] Obviously, the specific implementation of this invention is not limited to the above-described methods. Any non-substantial improvements made using the inventive concept and technical solution of this invention are within the protection scope of this invention.

Claims

1. An electromagnet assembly, comprising a moving iron core (2i), a magnet coil winding structure, and / or a stationary iron core, characterized in that, A damper (2k) is provided between the moving iron core (2i) and the magnet coil winding structure or / and between the stationary iron core and the moving iron core (2i); the electromagnet assembly also includes an oil storage mechanism for replenishing the damper; the oil storage mechanism has a damper (2k); the damper (2k) in the oil storage mechanism can enter between the moving iron core (2i) and the magnet coil winding structure or / and between the stationary iron core and the moving iron core (2i).

2. The electromagnet assembly according to claim 1, characterized in that, The oil storage mechanism includes an oil storage tank (2p) disposed on the magnet coil winding structure and / or the moving iron core (2i). The oil storage tank (2p) is equipped with a damper (2k); The oil reservoir is connected to the area between the moving iron core (2i) and the magnet coil winding structure and / or between the stationary iron core and the moving iron core (2i).

3. The electromagnet assembly according to claim 2, characterized in that, The magnet coil winding structure includes a coil frame (2m), and the oil storage mechanism includes an oil storage tank (2p) disposed on the coil frame (2m).

4. The electromagnet assembly according to claim 3, characterized in that, The coil frame (2m) is provided with an assembly through hole; each end of the coil frame (2m) is provided with an oil storage mechanism; the oil storage mechanism at the end of the coil frame (2m) includes an oil storage groove (2p) provided on the inner wall of the assembly through hole. The oil storage tank (2p) in the oil storage mechanism at the end of the coil frame (2m) includes an upper connecting groove (2p2) and / or a single groove (2p1) provided on the inner wall of the assembly through hole.

5. The electromagnet assembly according to claim 4, characterized in that, The oil storage tank (2p) in the oil storage mechanism at the end of the coil frame (2m) includes multiple individual tanks (2p1), which are distributed on the inner wall of the assembly through hole; each individual tank (2p1) in each oil storage mechanism is connected to the other through an upper connecting slot (2p2).

6. The electromagnet assembly according to any one of claims 1-5, characterized in that, The oil storage tank (2p) is one of the following: annular, rectangular, arc-shaped, or irregularly shaped tank structure.

7. An electromagnet assembly according to claim 6, characterized in that, The oil storage tank (2p) provided on the moving iron core is an annular groove.

8. The electromagnet assembly according to any one of claims 1-5, characterized in that, The stationary iron core includes an upper stationary iron core (2d) and a lower stationary iron core (2g) disposed at both ends of the outer casing (2b); the upper stationary iron core (2d) and / or the lower stationary iron core (2g) have a flow gap with the adjacent oil storage tank.

9. The electromagnet assembly according to any one of claims 1-5, characterized in that, The damping material (2k) is damping grease and / or damping paste and / or damping coating.

10. A braking device, characterized in that: Includes the electromagnet assembly (2) as described in any one of claims 1-9.

11. A vehicle, characterized in that, Includes the braking device as described in claim 10 or includes the electromagnet assembly (2) as described in any one of claims 1-9.

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