Electromagnetic valve with self-drainage function

Abstract

The electromagnetic valve with the self-drainage function comprises a shell, a protective layer is fixedly arranged on the inner wall of the shell, a coil matched with the protective layer is arranged in the protective layer, an electrified wire electrically connected with the coil is fixedly arranged on the coil, and at least part of the electrified wire extends out of the shell. A containing cavity is further formed in the shell, a static armature fixedly arranged on the shell is arranged in the containing cavity, and a movable iron core capable of moving upwards relative to the static iron core is arranged on one side of the static iron core. A drain hole is further formed in the outer circumferential face of the shell and located in the side, away from the power-on wire, of the static iron core. The beneficial effects of the utility model are mainly reflected in that the design of the drain hole can timely drain the condensate water in the shell, thereby avoiding the accumulation of the condensate water, avoiding the occurrence of electrical short circuit, open circuit or corrosion and clamping stagnation of internal parts and the like, improving the safety and prolonging the service life. And meanwhile, the coil is separated by the protective layer, so that the condition of electrical failure of the coil caused by condensate water can be avoided, and the service life is further prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to solenoid valve technical field, specifically, especially, a kind of solenoid valve with self-draining function. BACKGROUND

[0002] At present, the locking device of existing electrically controlled mechanical automatic transmission (AMT) automobile is mostly provided with locking button on the handle of shift lever or locking switch on instrument panel panel, and these locking devices belong to mechanical type. When the automobile is changed from P gear (parking gear) to other gear such as R gear (reverse gear), N gear (neutral gear) and D-M (forward gear), or from other gear such as R gear, N gear and D-M gear to P gear, the shift lever must be locked by stepping on the brake and pressing the locking button or locking switch, otherwise the shift lever will be locked and cannot be moved to change gear, so as to prevent incorrect operation from damaging the parts of automatic transmission. Since the locking button is provided on the shift lever, a locking mechanism needs to be added inside the shift lever, although the locking mechanism does not occupy the space of the whole mechanism, but the internal mechanism is relatively complex. If the locking switch is added on the panel, relevant locking mechanism needs to be added in the whole mechanism, which occupies a larger space and is not convenient to operate.

[0003] For example, a high-damping gear locking electromagnetic device with patent number CN108317246A includes a housing and an intermediate shaft that can slide relative to the housing. One end of the intermediate shaft at least partially extends outside the housing. A magnetic member with a through hole is fixed in the housing, and one end of the intermediate shaft penetrates the magnetic member. The housing also has an electromagnetic coil adjacent to the magnetic member. A magnetic piston is fixed to the other end of the intermediate shaft, and the magnetic piston and the magnetic member are connected by a spring on the intermediate shaft. The magnetic piston also has a first damping and a second damping. However, when used outdoors where temperature and humidity change greatly, condensation may occur inside the housing, causing electrical short circuit, open circuit or internal part corrosion, affecting the service life and posing a safety hazard. SUMMARY

[0004] The utility model aims at overcoming the shortcomings of prior art, and provides a solenoid valve with self-draining function.

[0005] The utility model realizes the purpose by the following technical scheme:

[0006] The utility model provides an electromagnetic valve with self drainage function, including the inner wall of shell, the inner wall of shell is fixed with the protection layer, the protection layer is built -in with the coil that is suitable for it, the coil is fixed with the current -conducting wire that is electrically connected with it, the current -conducting wire at least partial extension is placed in the shell outside, the shell is equipped with a receiving cavity in, the receiving cavity is built -in the static armature that is fixed in the shell, the static core one side is equipped with the dynamic core that can be opposite it and move upwards, the outer circumferential surface of shell is also equipped with the drainage hole, the drainage hole is located the static core side away from the current -conducting wire.

[0007] Preferably, the thickness of the inner wall of the shell gradually increases from the drainage hole to the two ends of the shell, and the inner wall of the shell at the drainage hole is thinnest.

[0008] Preferably, the static armature is further fixed with a guide post, and the dynamic core is provided with a guide groove matched with the guide post.

[0009] Preferably, the guide post is coaxial with the central axis of the protection layer and the shell.

[0010] Preferably, the dynamic core is sleeved with a shaft sleeve matched therewith, and the shaft sleeve is fixed on the shell.

[0011] Preferably, the shell is formed by splicing an upper shell and a lower shell, the end side of the upper shell and the lower shell close to each other is provided with a protruding part, the protruding part is in a stepped shape, the end side of the lower shell is provided with a groove matched with the protruding part, the protruding part is inserted into the groove, and the upper shell and the lower shell are fixed by locking screws.

[0012] Preferably, the groove is built-in a sealing ring, and the other side of the sealing ring abuts against the protruding part.

[0013] Preferably, the diameter of the drainage hole is greater than 3 mm.

[0014] The beneficial effects of the utility model mainly reflect in:

[0015] 1. The design is exquisite, the drainage hole can drain the condensed water in the shell in time, avoids the accumulation of condensed water, eliminates the electrical short circuit, open circuit or internal part corrosion jam and other conditions, improves the safety and service life. At the same time, the coil is separated by the protection layer, which can avoid the electrical failure of the coil caused by condensed water, and further improve the service life.

[0016] 2. The drainage hole with a diameter of more than 3 mm has the best drainage effect, which can avoid the situation that the condensed water cannot be drained in time due to tension, and improve the safety. DRAWINGS

[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0018] Figure 1 : A schematic diagram of the preferred embodiment of this utility model. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] like Figure 1 As shown, this utility model discloses an electromagnetic valve with a self-draining function, including a housing 1. A protective layer 2 is fixed on the inner wall of the housing 1. The protective layer 2 is made of waterproof and insulating materials, such as silicone, which are all within the protection scope of this utility model and will not be described in detail here.

[0023] The protective layer 2 has a coil 3 that is compatible with it. The coil 3 is completely placed inside the protective layer 2. A current-carrying wire 31 that is electrically connected to the coil 3 is fixed on it. The current-carrying wire 31 extends at least partially outside the housing 1 so as to facilitate electrical connection with an external power source.

[0024] In this preferred embodiment, a drain hole 7 is also provided on the outer circumferential surface of the housing 1, and the drain hole 7 is located on the side of the stationary iron core 5 away from the energized conductor 31. Furthermore, the thickness of the inner wall of the housing 1 gradually increases from the drain hole 7 towards both ends of the housing 1, with the inner wall of the housing 1 being thinnest at the drain hole 7. This ingenious design allows for timely drainage of condensate from the housing 1, preventing condensate accumulation and eliminating the possibility of electrical short circuits, open circuits, or internal component corrosion and jamming, thus improving safety and service life. Simultaneously, the coil 3 is separated from it by the protective layer 2, preventing electrical failure of the coil due to condensate and further extending its service life.

[0025] Further, the diameter of the drain hole 7 is greater than 3 mm, of course, the drain hole 7 can also be other diameters, the diameter is adopted because the diameter has the best drainage effect, avoids the situation that the condensed water cannot be discharged in time due to the tension, and improves the safety.

[0026] The shell 1 is further provided with a receiving cavity 4, the receiving cavity 4 is provided with a static armature 5 fixed on the shell 1, and the static armature 5 is provided with a movable armature 6 which can move upward relative to the static armature 5. The static armature 5 is further provided with a guide column 51, and the movable armature 6 is provided with a guide groove 61 matched with the guide column 51. The central axis of the guide column 51 is coaxial with the central axes of the protective layer 2 and the shell 1. The movable armature 6 is provided with a shaft sleeve 62 matched with the movable armature 6, and the shaft sleeve 62 is fixed on the shell 1.

[0027] The shell 1 is formed by splicing an upper shell 11 and a lower shell 12, the end side of the upper shell 11 and the lower shell 12 close to each other is provided with a protruding part 13, the protruding part 13 is in a stepped shape, the end side of the lower shell 12 is provided with a groove 14 matched with the protruding part 13, the protruding part 13 is inserted into the groove 14, and the upper shell 11 and the lower shell 12 are fixed by locking screws. The groove 14 is provided with a sealing ring 15, and the other side of the sealing ring 15 abuts against the protruding part 13. The sealing ring 15 can prevent foreign matters from entering the inside, and ensures the cleanliness inside the shell.

[0028] The working process of the utility model is briefly described as follows: when the coil 3 is electrified, the movable armature 6 moves away from the static armature 5, and the work of the electromagnet is completed. During the work, due to the change of the temperature difference in the outside, the condensed water will accumulate in the shell, and the accumulated condensed water will be discharged through the drain hole, so that the cleanliness inside the shell is ensured.

[0029] It should be understood that although the present specification is described in terms of embodiments, each embodiment does not necessarily contain only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that can be understood by those skilled in the art.

[0030] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the utility model, and they are not used to limit the protection scope of the utility model, and any equivalent embodiments or changes made without departing from the spirit of the utility model art should be included in the protection scope of the utility model.

Claims

1. Electromagnetic valve with self-draining function, comprising a housing (1), characterized in that: The inner wall of the shell (1) is provided with a protective layer (2), the protective layer (2) is provided with a coil (3) matched therewith, the coil (3) is provided with an energized wire (31) electrically connected therewith, and the energized wire (31) is at least partially extended outside the shell (1); the shell (1) is further provided with a receiving cavity (4), the receiving cavity (4) is provided with a static iron core (5) fixed on the shell (1), and one side of the static iron core (5) is provided with a movable iron core (6) movable upward relative thereto; the outer circumferential surface of the shell (1) is further provided with a drain hole (7), and the drain hole (7) is located on the side of the static iron core (5) away from the energized wire (31).

2. The electromagnetic valve having a self-draining function according to claim 1, characterized by: The thickness of the inner wall of the shell (1) gradually increases from the drain hole (7) to both ends of the shell (1), and the inner wall of the shell (1) at the drain hole (7) is thinnest.

3. The electromagnetic valve having a self-draining function according to claim 1, characterized by: The static armature (5) is further provided with a guide column (51), and the movable iron core (6) is provided with a guide groove (61) matched with the guide column (51).

4. The electromagnetic valve having a self-draining function according to claim 3, characterized by: The central axis of the guide column (51) is coaxial with the central axes of the protective layer (2) and the shell (1).

5. The electromagnetic valve having a self-draining function according to claim 1, characterized by: The movable iron core (6) is provided with a shaft sleeve (62) matched therewith, and the shaft sleeve (62) is fixed on the shell (1).

6. The electromagnetic valve having a self-draining function according to claim 1, characterized by: The shell (1) is formed by splicing an upper shell (11) and a lower shell (12), the end side of the upper shell (11) and the lower shell (12) close to each other is provided with a protruding portion (13), the protruding portion (13) is in a stepped shape, the end side of the lower shell (12) is provided with a groove (14) matched with the protruding portion (13), the protruding portion (13) is inserted into the groove (14), and the upper shell (11) and the lower shell (12) are fixed by locking screws.

7. The electromagnetic valve having a self-draining function according to claim 6, characterized by: The groove (14) is provided with a sealing ring (15), and the other side of the sealing ring (15) abuts against the protruding portion (13).

8. The electromagnetic valve having a self-draining function according to claim 1, characterized by: The diameter of the drain hole (7) is greater than 3mm.

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