Electromagnetic driver

Abstract

The utility model discloses an electromagnetic driver which comprises a shell and an electromagnetic mechanism, and the shell is provided with an installation cavity. The electromagnetic mechanism comprises a coil assembly, a fixed iron core and a movable iron core assembly, the coil assembly is fixedly arranged in the mounting cavity, the fixed iron core is fixedly connected to the shell, the coil assembly is used for generating a magnetic field to attract the movable iron core assembly to move in the direction close to the fixed iron core, and the movable iron core assembly comprises a movable iron core, an actuating shaft, a damping block and a spring; a connecting groove is formed in the movable iron core in the axial direction, the actuating shaft is fixedly connected to the connecting groove and slidably connected to the fixed iron core, the damping block is slidably connected to the connecting groove, the spring is arranged between the actuating shaft and the damping block, and the spring is used for driving the damping block to stretch out of the connecting groove so that the damping block can abut against the shell, and noise generated during operation can be reduced. And the user experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drivers, in particular to an electromagnetic driver. Background Art

[0002] An engine is usually provided with an electromagnetic driver to control the movement of a corresponding cam to meet the operating requirements under different working conditions. The existing electromagnetic drivers mainly drive the linear movement of a moving iron core by generating a magnetic field through a coil. However, the movement of the moving iron core will impact and collide with the housing, resulting in a relatively large noise during the operation of the electromagnetic driver, which affects the user experience. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides an electromagnetic driver, which can reduce the noise generated during operation and improve the user experience.

[0004] The electromagnetic driver according to the first aspect embodiment of the utility model includes a housing and an electromagnetic mechanism. The housing is provided with an installation cavity; the electromagnetic mechanism includes a coil assembly, a fixed iron core, and a moving iron core assembly. The coil assembly is fixedly arranged in the installation cavity, the fixed iron core is fixedly connected to the housing, the moving iron core assembly includes a moving iron core, an actuating shaft, a shock-absorbing block, and a spring. The moving iron core is axially provided with a connecting groove, the actuating shaft is fixedly connected to the connecting groove, and the actuating shaft is slidably connected to the fixed iron core. The shock-absorbing block is slidably connected in the connecting groove, and the spring is arranged between the actuating shaft and the shock-absorbing block. The spring is used to drive the shock-absorbing block to extend out of the connecting groove so that the shock-absorbing block can abut against the housing. The coil assembly is used to generate a magnetic field to attract the moving iron core assembly to move in a direction close to the fixed iron core.

[0005] The electromagnetic driver according to the embodiment of the utility model has at least the following beneficial effects: The housing is provided with an installation cavity, the coil assembly is fixedly arranged in the installation cavity, the fixed iron core is fixedly connected to the housing, the moving iron core is axially provided with a connecting groove, and the actuating shaft is fixedly connected to the connecting groove. By setting the actuating shaft to be slidably connected to the fixed iron core, the moving iron core can move in a direction close to or away from the fixed iron core. The shock-absorbing block is slidably connected to the connecting groove, and the spring is arranged in the connecting groove and is located between the actuating shaft and the shock-absorbing block. The spring can drive the shock-absorbing block to extend out of the connecting groove so that the shock-absorbing block can abut against the housing. When the coil assembly generates a magnetic field, it can attract the moving iron core assembly to move in a direction close to the fixed iron core; when the coil assembly is turned off, the moving iron core assembly moves in a direction away from the fixed iron core, and the shock-absorbing block abuts against the housing. By setting the spring, the impact between the shock-absorbing block and the housing can be slowed down, so that the shock-absorbing block can retract into the connecting groove, thereby reducing the noise generated by the collision between the moving iron core assembly and the housing and improving the user experience.

[0006] According to some embodiments of the present utility model, the shock-absorbing block includes a main body portion and two abutting portions. The main body portion is slidably connected to the connection groove, and the two abutting portions are respectively arranged at both ends of the main body portion.

[0007] According to some embodiments of the present utility model, a guiding portion protrudes in a direction away from the fixed iron core on the actuating shaft, and both ends of the spring are respectively sleeved on the guiding portion and the abutting portion.

[0008] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0009] The following further describes the present utility model in conjunction with the drawings and embodiments, wherein:

[0010] Figure 1 is a schematic diagram of an electromagnetic actuator according to an embodiment of the present utility model;

[0011] Figure 2 is a cross-sectional view of an electromagnetic actuator according to an embodiment of the present utility model;

[0012] Figure 3 is a schematic diagram of a moving iron core assembly of an electromagnetic actuator according to an embodiment of the present utility model;

[0013] Figure 4 is an exploded schematic diagram of an electromagnetic actuator according to an embodiment of the present utility model.

[0014] Reference Numerals:

[0015] Housing 100, mounting cavity 110, outer shell 120, end cover 130, guiding groove 131, mounting plate 140, mounting hole 141;

[0016] Electromagnetic mechanism 200, coil assembly 210, connection shell 211, winding skeleton 212, enameled wire 213, wiring terminal 214, fixed iron core 220, insert block 221, copper sleeve 222, mounting portion 223, moving iron core assembly 230, moving iron core 240, connection groove 241, actuating shaft 250, guiding portion 251, shock-absorbing block 260, main body portion 261, abutting portion 262, spring 270, elastic ring 280. Detailed Embodiments

[0017] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0018] In the description of the present utility model, it should be understood that with regard to the orientation description, such as the upper, lower, front, rear, left, right, etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0019] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is two or more. Understandings such as "greater than", "less than", "exceeding", etc. do not include the present number, and understandings such as "above", "below", "within", etc. include the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0020] In the description of the present utility model, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0021] It can be understood that referring to Figures 1 to 4 , the electromagnetic driver according to the embodiment of the first aspect of the present utility model includes a housing 100 and an electromagnetic mechanism 200. The housing 100 is provided with an installation cavity 110; the electromagnetic mechanism 200 includes a coil assembly 210, a fixed iron core 220, and a moving iron core assembly 230. The coil assembly 210 is fixedly arranged in the installation cavity 110. The fixed iron core 220 is fixedly connected to the housing 100. The moving iron core assembly 230 includes a moving iron core 240, an actuating shaft 250, a shock-absorbing block 260, and a spring 270. The moving iron core 240 is axially provided with a connecting groove 241. The actuating shaft 250 is fixedly connected to the connecting groove 241, and the actuating shaft 250 is slidably connected to the fixed iron core 220. The shock-absorbing block 260 is slidably connected in the connecting groove 241. The spring 270 is arranged between the actuating shaft 250 and the shock-absorbing block 260. The spring 270 is used to drive the shock-absorbing block 260 to extend out of the connecting groove 241 so that the shock-absorbing block 260 can abut against the housing 100. The coil assembly 210 is used to generate a magnetic field to attract the moving iron core assembly 230 to move in the direction close to the fixed iron core 220.

[0022] The housing 100 is provided with an installation cavity 110. The coil assembly 210 is fixedly arranged in the installation cavity 110. The fixed iron core 220 is fixedly connected to the housing 100. The moving iron core 240 is axially provided with a connection groove 241. The actuating shaft 250 is fixedly connected to the connection groove 241. By arranging the actuating shaft 250 to be slidably connected to the fixed iron core 220, the moving iron core 240 can move in a direction close to or away from the fixed iron core 220. The shock-absorbing block 260 is slidably connected to the connection groove 241. The spring 270 is arranged in the connection groove 241 and is located between the actuating shaft 250 and the shock-absorbing block 260. The spring 270 can drive the shock-absorbing block 260 to extend out of the connection groove 241, so that the shock-absorbing block 260 can abut against the housing 100. When the coil assembly 210 generates a magnetic field, it can attract the moving iron core assembly 230 to move in a direction close to the fixed iron core 220. When the coil assembly 210 is turned off, the moving iron core assembly 230 moves in a direction away from the fixed iron core 220, making the shock-absorbing block 260 abut against the housing 100. By arranging the spring 270, the impact between the shock-absorbing block 260 and the housing 100 can be slowed down, enabling the shock-absorbing block 260 to retract into the connection groove 241, thereby reducing the noise generated by the collision between the moving iron core assembly 230 and the housing 100 and improving the user experience.

[0023] In addition, the connection groove 241 is arranged along the axis of the moving iron core 240. The bottom wall of the moving iron core 240 is provided with an opening communicating with the connection groove 241. The diameter of the connection groove 241 is larger than the diameter of the opening, so that the shock-absorbing block 260 can extend out of the opening. When the moving iron core assembly 230 is reset, the shock-absorbing block 260 can abut against the outer shell 120, enabling the shock-absorbing block 260 to retract from the opening into the connection groove 241, so that the shock-absorbing block 260 can buffer and absorb the impact between the moving iron core assembly 230 and the housing 100 and reduce the noise generated during the operation of the electromagnetic actuator.

[0024] It can be understood that referring to Figure 2 and Figure 3 , the shock-absorbing block 260 includes a main body portion 261 and two abutting portions 262. The main body portion 261 is slidably connected to the connection groove 241. The two abutting portions 262 are respectively arranged at both ends of the main body portion 261. By arranging the two abutting portions 262 at both ends of the main body portion 261 and the main body portion 261 to be slidably connected to the connection groove 241, the main body portion 261 can smoothly slide along the axis of the connection groove 241, improving the movement stability of the shock-absorbing block 260.

[0025] In addition, one of the abutting portions 262 can abut against the actuating shaft 250, and the other abutting portion 262 can abut against the housing 100. By the cooperation of the two abutting portions 262, the movement position of the shock-absorbing block 260 can be limited, enabling the shock-absorbing block 260 to move smoothly and improving the reliability of the moving iron core assembly 230.

[0026] Specifically, referring toFigure 2 and Figure 3 On the side where the actuating shaft 250 protrudes away from the fixed iron core 220, a guiding portion 251 is provided. The two ends of the spring 270 are respectively sleeved on the guiding portion 251 and the abutting portion 262. The guiding portion 251 is arranged on the side of the actuating shaft 250 away from the fixed iron core 220. By sleeving the two ends of the spring 270 on the guiding portion 251 and the abutting portion 262 respectively, the spring 270 can be positioned between the actuating shaft 250 and the damping block 260, the position of the spring 270 can be stabilized, the position deviation of the spring 270 can be avoided, the damping block 260 can be stressed stably, the movement smoothness of the damping block 260 can be improved, and the reliability of the moving iron core assembly 230 can be improved.

[0027] It can be understood that, referring to Figure 2 , an insert block 221 is fixedly connected to the fixed iron core 220, and the actuating shaft 250 is slidably connected to the insert block 221. The insert block 221 is fixedly connected to the fixed iron core 220. By arranging the actuating shaft 250 to be slidably connected to the insert block 221, the movement of the actuating shaft 250 can be guided, the movement of the actuating shaft 250 can be stabilized, the radial deviation of the actuating shaft 250 can be reduced, and the movement stability of the actuating shaft 250 can be improved.

[0028] In addition, by arranging the insert block 221, the direct abrasion between the fixed iron core 220 and the actuating shaft 250 can be avoided, the service life of the fixed iron core 220 can be prolonged, and the fixed iron core 220 can be maintained by replacing the insert block 221, the reliability of the fixed iron core 220 can be improved, and the service life of the electromagnetic driver can be prolonged.

[0029] Specifically, referring to Figure 2 , a copper sleeve 222 is fixedly connected to the end of the fixed iron core 220 away from the insert block 221, and the actuating shaft 250 is slidably connected to the copper sleeve 222. The copper sleeve 222 is fixedly arranged at the end of the fixed iron core 220 away from the insert block 221, and the actuating shaft 250 is inserted into the copper sleeve 222, so that the actuating shaft 250 can slide in the copper sleeve 222. Through the cooperation of the insert block 221 and the copper sleeve 222, the movement of the actuating shaft 250 can be guided, the movement of the actuating shaft 250 can be accurate, the abrasion of the actuating shaft 250 can be slowed down, and the reliability of the electromagnetic driver can be improved.

[0030] It can be understood that, referring to Figure 1 and Figure 2The housing 100 includes a shell 120 and an end cover 130. The end cover 130 is fixedly connected to the shell 120 to enclose the installation cavity 110. The end cover 130 is provided with a guide groove 131. The moving iron core 240 is slidably arranged in the guide groove 131. The end cover 130 is fixedly connected to the shell 120. The shell 120 and the end cover 130 cooperate to enclose the installation cavity 110. The end cover 130 is provided with a guide groove 131. The moving iron core 240 is slidably connected to the guide groove 131 so that the moving iron core 240 can move smoothly in the guide groove 131, reduce the position deviation of the moving iron core 240, and improve the movement stability of the moving iron core assembly 230.

[0031] It should be noted that the housing 120 and the end cover 130 can be fixedly connected together by welding, gluing, etc., which will not be described in detail here.

[0032] It is understandable that, referring to Figure 2 and Figure 4 The electromagnetic mechanism 200 further includes two elastic rings 280, which are respectively arranged at the two ends of the coil assembly 210, and the elastic rings 280 can abut against the inner wall of the installation cavity 110. The two elastic rings 280 are respectively arranged at the two ends of the coil assembly 210, and the elastic rings 280 can abut against the inner wall of the installation cavity 110, so that the elastic rings 280 can buffer and absorb the position shaking of the coil assembly 210 in the installation cavity 110, thereby preventing the coil assembly 210 from directly colliding with the inner wall of the installation cavity 110, reducing the possibility of damage to the coil assembly 210, and avoiding the generation of noise, thereby improving the user experience.

[0033] The elastic ring 280 may be a rubber part or a silicone part, and it only needs to be able to buffer and absorb the vibration of the coil assembly 210 , which is not limited here.

[0034] It is understandable that, referring to Figure 2 The coil assembly 210 includes a connection shell 211, a winding frame 212, an enameled wire 213 and a connection terminal 214. The connection shell 211 is fixedly arranged in the installation cavity 110, the winding frame 212 is fixedly connected to the connection shell 211, the enameled wire 213 is wound on the winding frame 212, and the enameled wire 213 is electrically connected to the connection terminal 214. The connection shell 211 is fixedly arranged in the installation cavity 110, the winding frame 212 is fixed in the connection shell 211, and the enameled wire 213 is wound on the winding frame 212. The connection terminal 214 is electrically connected to the enameled wire 213. By energizing the connection terminal 214, the current flows into the enameled wire 213, so that a magnetic field can be generated, so that the magnetic field can penetrate into the fixed iron core 220, so that the fixed iron core 220 can adsorb the moving iron core assembly 230, so that the actuating shaft 250 can extend out of the housing 100, so as to facilitate the control of the cam movement of the driving engine.

[0035] It can be understood that, with reference to Figure 2 and Figure 4 , an installation portion 223 is provided at an end of the fixed iron core 220 close to the moving iron core assembly 230, and the shape of the installation portion 223 is set to be conical. The installation portion 223 is arranged at the end of the fixed iron core 220 close to the moving iron core assembly 230. By setting the shape of the installation portion 223 to be conical, the installation portion 223 can be smoothly inserted into the coil assembly 210, so as to facilitate the installation of the fixed iron core 220, prevent the fixed iron core 220 from getting stuck on the housing 100, and improve the installation convenience of the fixed iron core 220.

[0036] It can be understood that, with reference to Figure 1 and Figure 4 , the housing 100 further includes an installation plate 140, and a plurality of installation holes 141 are formed in the installation plate 140, and the plurality of installation holes 141 are arranged at intervals. The installation plate 140 is fixedly connected to the housing 100. By forming a plurality of installation holes 141 in the installation plate 140, it is possible to facilitate the insertion of fasteners and facilitate the fixing of the housing 100 on the fuel vehicle, thereby improving the installation convenience of the electromagnetic driver.

[0037] It should be noted that the fastener can be a bolt or a screw, which can be inserted into the installation hole 141 and fixedly connected to the fuel vehicle, improving the installation convenience of the electromagnetic driver.

[0038] It can be understood that the electromagnetic driver of the embodiment of the present invention can be applied to devices such as a circuit breaker, an electromagnetic switch, and an electromagnetic valve, and will not be elaborated herein one by one.

[0039] The embodiments of the present invention have been described in detail above with reference to the drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. Electromagnetic driver, characterized in that, Comprising: A housing provided with an installation cavity; An electromagnetic mechanism including a coil assembly, a fixed iron core, and a moving iron core assembly. The coil assembly is fixedly arranged in the installation cavity, the fixed iron core is fixedly connected to the housing, the moving iron core assembly includes a moving iron core, an actuating shaft, a shock absorber block, and a spring. The moving iron core is axially provided with a connection groove, the actuating shaft is fixedly connected to the connection groove, and the actuating shaft is slidably connected to the fixed iron core. The shock absorber block is slidably connected in the connection groove, the spring is arranged between the actuating shaft and the shock absorber block, and the spring is used to drive the shock absorber block to extend out of the connection groove so that the shock absorber block can abut against the housing. The coil assembly is used to generate a magnetic field to attract the moving iron core assembly to move in a direction close to the fixed iron core.

2. The electromagnetic driver according to claim 1, wherein The shock absorber block includes a main body portion and two abutting portions. The main body portion is slidably connected in the connection groove, and the two abutting portions are respectively arranged at both ends of the main body portion.

3. The electromagnetic driver according to claim 2, wherein, A guiding portion is convexly provided on the actuating shaft in a direction away from the fixed iron core, and both ends of the spring are respectively sleeved on the guiding portion and the abutting portion.

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