Coil assembly of electromagnetic valve

Abstract

The utility model discloses a shell assembly of a coil assembly of an electromagnetic valve, which comprises a bobbin bracket with a cylindrical structure, a movable iron core, a coil assembly, a coil assembly, a coil assembly, a coil assembly, a coil assembly and a coil assembly, and is characterized in that a sliding hole is formed on the inner side of the bobbin bracket and is used for accommodating the movable iron core; a winding groove is formed in the peripheral side of the coil rack, and a coil can be wound in the winding groove; a conductive piece is mounted at the upper end of the coil rack and is electrically connected with the coil; the coil further comprises a plastic coating layer, the plastic coating layer wraps the coil rack and the outer side of the coil, the plastic coating layer is provided with an inserting part, the inserting part is provided with a connecting hole, and the conductive piece is exposed out of the inner side of the connecting hole. The electromagnetic valve has the advantages of being good in protection performance, low in cost, reliable in operation and long in service life.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electromagnetic valve, more exactly relates to a coil subassembly of electromagnetic valve. BACKGROUND

[0002] The electromagnetic valve is one of the indispensable components of automobile products, and its main function is to realize the on-off function of the pipeline.

[0003] For example, the electromagnetic valve applied in the automobile air spring has a shell, a containing space on the inner side of the shell is used for containing the coil subassembly, the coil subassembly has a moving iron core on the inner side, the coil subassembly drives the moving iron core to move, and the moving iron core is in transmission connection with a valve core to drive the valve core to open or close the working port.

[0004] The existing coil subassembly is generally of the structure design of bare coil, and the protection performance of the coil is low.

[0005] In long-term use, sundries are easily attached to the coil, leading to the decline of the performance and service life of the device. INVENTION CONTENTS

[0006] In view of the deficiencies and defects of the prior art, a shell assembly with low cost, reliable operation and long service life is provided.

[0007] A shell assembly of a coil subassembly of an electromagnetic valve comprises:

[0008] The bobbin has a cylindrical structure, and a sliding hole is formed on the inner side of the bobbin and used for containing the moving iron core.

[0009] The bobbin has a cylindrical structure, and a sliding hole is formed on the inner side of the bobbin and used for containing the moving iron core.

[0010] The bobbin has a cylindrical structure, and a sliding hole is formed on the inner side of the bobbin and used for containing the moving iron core.

[0011] The bobbin has a cylindrical structure, and a sliding hole is formed on the inner side of the bobbin and used for containing the moving iron core.

[0012] Compared with the prior art, the coil subassembly of the electromagnetic valve has the following advantages after the above structure is adopted:

[0013] After the coil framework is wound, the whole plastic injection molding can be performed to form the plastic coating layer, and the mounting end face and the plug-in part are injection molded.

[0014] After the above improvement, the mutual assembly of multiple parts is reduced, the dimensional tolerance of a single part is reduced, the single part only retains the most basic function, and the cost is greatly reduced.

[0015] The plastic coating layer can provide physical protection, effectively prevent the external environment (such as moisture, dust) from damaging the internal structure, make the device run reliably, and have high service life;

[0016] The insulation performance is also improved, and safety in use is ensured.

[0017] The conductive part is exposed from the connecting hole of the plug-in part, and can be electrically connected with the conductive part after the external connector is connected with the plug-in part, and the traditional coil assembly needs to be provided with a female seat connector, and the plug-in part is formed through the injection molding process, so that the coil assembly has the characteristics of low cost and convenient manufacturing.

[0018] As an improvement of the utility model, the upper end of the winding frame is provided with an outwardly extending upper baffle, and the lower end is provided with an outwardly extending lower baffle.

[0019] The upper baffle and the lower baffle form the winding groove.

[0020] As an improvement of the utility model, the outer diameter of the coil is smaller than the outer diameter of the upper baffle and the lower baffle, the inner side of the plastic coating layer is respectively attached to the outer side of the coil and the outer side of the upper baffle and the lower baffle, and the inner side of the plastic coating layer and the outer side of the upper baffle and the outer side of the lower baffle form a first fitting structure.

[0021] As an improvement of the utility model, a gap is provided between the upper baffle and the upper end of the winding frame, and a gap is provided between the lower baffle and the lower end of the winding frame.

[0022] The inner side of the plastic coating layer is respectively attached in the gap and forms a second fitting structure.

[0023] As an improvement of the utility model, the upper baffle is provided with a yoke arranged at intervals in the circumferential direction.

[0024] As an improvement of the utility model, the upper baffle is provided with a mounting groove in a semi-ring structure, and the mounting groove is open on the outside and close to the sliding hole on the inside.

[0025] The two mounting grooves are symmetrically arranged along the center line of the winding frame.

[0026] The number of yokes is two, and the two yokes are respectively loaded from the opening. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the utility model.

[0028] Figure 2 It is a structural schematic diagram of the utility model Figure 1 A-A sectional view structure schematic diagram.

[0029] Figure 3 is a three-dimensional structure schematic diagram of the utility model.

[0030] Figure 4 is the utility model's Figure 3 structure schematic diagram of the middle part in the explosion state.

[0031] Figure 5 is the structure schematic diagram of the reel frame of the utility model.

[0032] Figure 6 is the structure schematic diagram of the electromagnetic valve of the utility model.

[0033] As shown in the figure: 1, the reel; 1.1, sliding hole; 2, moving iron core; 3, winding groove; 3.1, coil; 4, plastic coating; 4.1, plug-in part; 4.11, connecting hole; 4.2, first fitting structure; 4.3, second fitting structure; 5, conductive part; 6, upper baffle; 6.1, mounting groove; 7, lower baffle; 8, yoke; 9, shell; 10, valve seat; 10.1, working port; 10.2, flow channel; 11, static iron core; 12, reset assembly; 13, valve core. DETAILED DESCRIPTION

[0034] The utility model will be further described below in combination with the drawings and specific embodiments.

[0035] Please refer to Figures 1-6 The coil assembly of the electromagnetic valve, as shown in the figure, comprises:

[0036] The reel 1 in the cylindrical structure is formed with a sliding hole 1.1 on the inner side, and the sliding hole 1.1 is used for accommodating the moving iron core 2;

[0037] The winding groove 3 is formed on the circumferential side of the reel frame 1, and the winding groove 3 can be used for winding the coil 3.1;

[0038] The conductive part 5 is installed on the upper end of the reel frame 1, and the conductive part 5 is electrically connected with the coil 3.1;

[0039] It also comprises a plastic coating 4, which is coated on the outer side of the reel frame 1 and the coil 3.1, and the plastic coating 4 has a plug-in part 4.1, the plug-in part 4.1 has a connecting hole 4.11, and the conductive part 5 is exposed from the inner side of the connecting hole 4.11.

[0040] After the coil 3.1 skeleton is wound, the whole plastic injection molding can be carried out to form the plastic coating 4, and the mounting end face and the plug-in part 4.1 are injection molded.

[0041] After the above improvement, the mutual assembly of multiple parts is reduced, the dimensional tolerance of a single part is reduced, the single part only retains the most basic function, and the cost is greatly reduced.

[0042] The plastic coating layer 4 can provide physical protection, effectively prevent the external environment (such as moisture, dust) from damaging the internal structure, make the device run reliably, and have high service life;

[0043] The insulation performance is also improved, and the use is safe.

[0044] The conductive part 5 is exposed from the connecting hole 4.11 of the plug-in part 4.1, and can be electrically connected with the conductive part 5 after the external connector is connected with the plug-in part 4.1. The traditional coil 3.1 assembly needs to be provided with a female connector. The plug-in part 4.1 is formed by the injection molding process, and has the characteristics of low cost and convenient manufacturing.

[0045] As an improvement of the utility model, the upper end of the reel frame 1 is provided with an outwardly extending upper baffle 6, and the lower end is provided with an outwardly extending lower baffle 7.

[0046] The upper baffle 6 and the lower baffle 7 form the winding groove 3.

[0047] After the above improvement, the coil 3.1 is wound in the winding groove 3, and the upper baffle 6 and the lower baffle 7 can limit the upper end and the lower end of the coil 3.1 respectively, so that the position of the coil 3.1 remains stable, and the device has high reliability and long service life.

[0048] As an improvement of the utility model, the outer diameter of the coil 3.1 is smaller than the outer diameter of the upper baffle 6 and the lower baffle 7, the inner side of the plastic coating layer 4 is respectively attached to the outer side of the coil 3.1 and the outer side of the upper baffle 6 and the lower baffle 7, and the inner side of the plastic coating layer 4 and the outer side of the upper baffle 6 and the outer side of the lower baffle 7 form a first embedded structure 4.2.

[0049] After the above improvement, the inner side of the plastic coating layer 4 is embedded in the outer side of the upper baffle 6 and the outer side of the lower baffle 7, so that the connection between the plastic coating layer 4 and the reel frame 1 is stable, the plastic coating layer 4 does not shake, and the effective effect is maintained.

[0050] Further, the lower end face of the lower baffle 7 is also covered by the plastic coating layer 4, and the end face of the lower baffle 7 is provided with a slot, the plastic coating layer 4 can be fitted in the slot, and the stability of the plastic coating layer 4 can be further improved.

[0051] As an improvement of the utility model, the upper baffle 6 and the upper end of the reel frame 1 are provided with a gap, and the lower baffle 7 and the lower end of the reel frame 1 are provided with a gap.

[0052] The inner side of the plastic coating layer 4 is respectively attached in the gap and forms a second embedded structure 4.3.

[0053] The improvement further enhances the stability of the connection between the plastic coating layer 4 and the reel stand 1.

[0054] As an improvement of the utility model, the upper baffle 6 is provided with yokes 8 at intervals in the circumferential direction.

[0055] The yokes 8 can optimize the magnetic force distribution and make the performance of the device better.

[0056] As an improvement of the utility model, the upper baffle 6 is provided with mounting grooves 6.1 of a semi-annular structure, the mounting grooves 6.1 are open at the outer side and close to the sliding hole 1.1 at the inner side;

[0057] The two mounting grooves 6.1 are symmetrically arranged along the center line of the reel stand 1.

[0058] The number of the yokes 8 is two, and the two yokes 8 are respectively loaded from the opening.

[0059] After the improvement, the yokes 8 are embedded in the upper baffle 6, and after the connection of the yokes 8 is completed, the plastic coating process is carried out, and the plastic coating layer 4 also covers the outer end of the yoke 8, so that the position is stable and reliable.

[0060] The electromagnetic valve of the application comprises a cylindrical shell 9, and a containing space is formed in the inner side of the shell, which is used for containing a coil 3.1 assembly;

[0061] A valve seat 10 can be arranged at the lower end of the containing space, and a static iron core 11 is arranged on the upper end surface of the valve seat 10, the static iron core 11 is fixed with the shell 9, and the upper end surface of the static iron core 11 abuts against the bottom end surface of the coil 3.1 unit; a working port 10.1 and a flow channel 10.2 are arranged on the valve seat 10,

[0062] A moving iron core 2 is arranged in the sliding hole 1.1, the moving iron core 2 is provided with a guide rod, the guide rod passes through the static iron core 11 and the valve seat 10 and is connected with a valve core 13;

[0063] The valve core 13 is arranged at the upper end of the working port 10.1;

[0064] When the coil 3.1 is electrified, the moving iron core 2 moves downward to cooperate with the static iron core 11, and drives the valve core 13 to close the working port 10.1, so that the medium cannot pass through the working port 10.1 to enter the flow channel 10.2;

[0065] When the coil 3.1 is de-energized, a reset assembly 12 (a spring arranged between the static iron core 11 and the moving iron core 2) drives the valve core to move upward to open the working port 10.1, and drives the moving iron core 2 to move upward, at this time, the working port 10.1 and the flow channel 10.2 are communicated, and the medium can pass through.

[0066] The above are only preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments, and any technical scheme falling within the concept of the present application belongs to the protection scope of the present application. It should be noted that, for ordinary skilled persons in the art, some improvements and refinements without departing from the principles of the present application are also considered to be within the protection scope of the present application.

Claims

1. A coil assembly of a solenoid valve, characterized by comprising: The application relates to a bobbin (1) with a cylindrical structure, a sliding hole (1.1) is formed in the inner side of the bobbin (1) and used for accommodating a moving iron core (2); a winding groove (3) is formed in the peripheral side of the bobbin (1) and used for winding a coil (3.1); a conductive part (5) is arranged on the upper end of the bobbin (1) and electrically connected with the coil (3.1); a plastic coating layer (4) is arranged on the outer side of the bobbin (1) and the coil (3.1) and has a plug-in part (4.1) with a connecting hole (4.11) from which the conductive part (5) is exposed. The upper end of the bobbin (1) is provided with an outwardly extending upper baffle (6) and the lower end is provided with an outwardly extending lower baffle (7). The winding groove (3) is formed between the upper baffle (6) and the lower baffle (7). The outer diameter of the coil (3.1) is smaller than that of the upper baffle (6) and the lower baffle (7), the inner side of the plastic coating layer (4) is attached to the outer side of the coil (3.1) and the outer side of the upper baffle (6) and the lower baffle (7) respectively, and the inner side of the plastic coating layer (4) and the outer side of the upper baffle (6) and the outer side of the lower baffle (7) form a first fitting structure (4.2). The upper baffle (6) and the upper end of the bobbin (1) are provided with a gap, and the lower baffle (7) and the lower end of the bobbin (1) are provided with a gap.

2. A coil assembly for a solenoid valve according to claim 1, wherein: The inner side of the plastic coating layer (4) is attached to the gap and forms a second fitting structure (4.3). The upper baffle (6) is provided with yokes (8) which are arranged at intervals in the circumferential direction.

3. A coil assembly for a solenoid valve according to claim 2, wherein: The upper baffle (6) is provided with half-ring-shaped mounting grooves (6.1) which are open at the outer side and close to the sliding hole (1.1) at the inner side.

4. A coil assembly for a solenoid valve according to claim 2, wherein: The two mounting grooves (6.1) are symmetrically arranged along the center line of the bobbin (1). The number of the yokes (8) is two, and the two yokes (8) are respectively arranged in the openings.

5. A coil assembly for a solenoid valve according to claim 2, wherein: ​ 6. A coil assembly for a solenoid valve according to claim 5, wherein: ​ ​ ​

Images