CN221034226U - Guide structure of double sliding bearings - Google Patents

Abstract

The utility model relates to the technical field of electromagnetic valves, in particular to a guide structure of a double sliding bearing; comprises a sleeve, a coil, an upper guide, an armature, a vent hole and a lower guide; the coil is arranged outside the sleeve; a stepped through hole is formed in the sleeve, and the upper guide, the armature and the lower guide are arranged in the stepped through hole; the upper guide and the lower guide are respectively arranged at a first step and a second step in the stepped through hole; the vent hole is arranged in the armature; the upper guide and the lower guide are matched to guide the armature to move up and down along the axial direction, so that the effects of precise matching inside the electromagnetic valve, reduced sliding friction of the armature, improved durability of parts and reduced hysteresis are achieved.

Description

Guide structure of double sliding bearings

Technical Field

The utility model relates to the technical field of electromagnetic valves, in particular to a guide structure of a double-sliding bearing.

Background

Solenoid valves are electromagnetic controlled industrial equipment, are automatic basic elements for controlling fluids, and belong to actuators, not limited to hydraulic and pneumatic. For use in industrial control systems to adjust the direction, flow, velocity and other parameters of the medium. The electromagnetic valve can be matched with different circuits to realize expected control, and the control precision and flexibility can be ensured;

On the one hand, the phenomenon that the armature axis is inclined easily occurs in the production and preparation process. When the electromagnetic valve operates, the armature is attracted by magnetic force to move up and down in the sleeve along the axial direction, the axial inclination can lead the armature to wear during operation, and the armature wear can be more serious along with the increase of the axial inclination. In addition, the device can also cause the phenomenon that the armature is blocked and cannot move due to overlarge friction, and the armature can also be caused to scrape the sleeve, so that the sleeve is damaged due to increased dynamic friction, and even the sleeve magnetic leakage can be caused.

On the other hand, since the magnetic material has hysteresis, that is, the magnetic material has a tendency to retain its magnetism, the change in magnetic induction intensity always lags behind the change in magnetic field intensity. Thus, when the coil current increases to a certain value and then gradually decreases, the decrease in armature lift always lags behind the decrease in magnetic field strength, which affects the response speed of the solenoid valve. This effect is desirable to be reduced as much as possible in some applications.

Disclosure of utility model

The utility model aims to provide a guide structure of a double-sliding bearing aiming at the defects in the prior art, and achieves the effects of precise fit inside an electromagnetic valve, reduced sliding friction of an armature, improved durability of parts and reduced hysteresis.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

A guiding structure of a double sliding bearing comprises a sleeve, a coil, an upper guide, an armature, a vent hole and a lower guide; the coil is arranged outside the sleeve; a stepped through hole is formed in the sleeve, and the upper guide, the armature and the lower guide are arranged in the stepped through hole; the upper guide and the lower guide are respectively arranged at a first step and a second step in the stepped through hole; the vent hole is arranged in the armature; the upper guide and the lower guide cooperate to guide the armature to move up and down along the axial direction.

Further, the coil is sleeved outside the sleeve.

Further, the upper guide is fastened at the first step within the stepped through hole.

Further, the lower guide is secured at the second step within the stepped through bore.

Further, the armature is in clearance fit with the upper guide and the lower guide.

By the technical scheme of the utility model, the following technical effects can be realized:

The device comprises a sleeve, a coil, an upper guide, an armature, a vent hole and a lower guide; the coil is arranged outside the sleeve; a stepped through hole is formed in the sleeve, and the upper guide, the armature and the lower guide are arranged in the stepped through hole; the upper guide and the lower guide are respectively arranged at a first step and a second step in the stepped through hole; the vent hole is arranged in the armature; the upper guide and the lower guide are matched to guide the armature to move up and down along the axial direction, so that the effects of precise matching inside the electromagnetic valve, reduced sliding friction of the armature, improved durability of parts and reduced hysteresis are achieved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.

FIG. 1 is a schematic view of a guide structure of a double slide bearing according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a guide structure of a double slide bearing according to an embodiment of the present invention;

FIG. 3 is a schematic view of an upper guide in an embodiment of the present invention;

FIG. 4 is a schematic diagram of a coil in an embodiment of the invention;

FIG. 5 is a schematic view of a sleeve according to an embodiment of the present invention;

FIG. 6 is a schematic view of a lower guide in an embodiment of the present invention;

Fig. 7 is a schematic diagram of an armature in an embodiment of the invention;

Reference numerals: sleeve 1, first ladder 1-1, second ladder 1-2, coil 2, upper guide 3, armature 4, vent 4-1, lower guide 5.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated as being "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are directions or positional relationships based on the drawings are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The guide structure of the double slide bearing, as shown in figure 1, comprises a sleeve 1, a coil 2, an upper guide 3, an armature 4, a vent 4-1 and a lower guide 5; the coil 2 is arranged outside the sleeve 1; a stepped through hole is formed in the sleeve 1, and the upper guide 3, the armature 4 and the lower guide 5 are arranged in the stepped through hole; the upper guide 3 and the lower guide 5 are respectively arranged at a first step 1-1 and a second step 1-2 in the stepped through hole; the vent hole 4-1 is arranged in the armature 4; the upper guide 3 and the lower guide 5 cooperate to guide the armature 4 to move up and down in the axial direction.

Specifically, when the electromagnetic valve operates, the coil 2 is electrified to generate a magnetic field, the armature 4 is controlled by the magnetic force to move up and down in the sleeve 1 along the axial direction, wherein the upper guide 3 and the lower guide 5 jointly play a guiding role, the armature 4 moves more stably, the possibility of the axis inclination of the armature is reduced, and the coaxiality of the armature and the sleeve 1 is better. Meanwhile, the upper guide 3 and the lower guide 5 are respectively arranged at the first step 1-1 and the second step 1-2 in the step-shaped through hole of the sleeve 1, so as to avoid abrasion caused by direct contact between the armature 4 and the sleeve 1, and further avoid magnetic leakage of the sleeve 1.

As a preferred embodiment, as shown in fig. 1, the coil 2 is sleeved outside the sleeve 1.

Specifically, through the structure that the coil 2 is sleeved outside the sleeve 1, after the coil 2 is electrified to generate a magnetic field, the armature 4 is driven to move up and down in the sleeve 1 along the axial direction more easily in a mode that the coil 2 is sleeved.

As a preference of the above embodiment, as shown in fig. 1, the upper guide 3 is fastened at the first step 1-1 in the stepped through hole.

As a preference to the above embodiment, the lower guide 5 is fastened at the second step 1-2 in the stepped through hole, as shown in fig. 1.

Specifically, the structure that the upper guide 3 is fastened at the first step 1-1 in the stepped through hole and the lower guide 5 is fastened at the second step 1-2 in the stepped through hole is used for further avoiding the abrasion caused by the direct contact of the armature 4 and the sleeve 1 in a fastening mode, so that the magnetic leakage condition of the sleeve 1 is prevented.

As a preference for the above embodiment, the armature 4 is, as shown in fig. 1, in a clearance fit with the upper guide 3 and the lower guide 5.

Specifically, through the structure setting of clearance fit between armature 4 and upper guide 3 and lower guide 5 to be used for making the axiality of armature 4 and sleeve 1 better under the effect of upper guide 3 and lower guide 5, correct its axis slope simultaneously, further avoid the wearing and tearing of armature 4 and sleeve 1.

The foregoing has outlined and described the basic principles, features, and advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (5)

1. A guide structure of double slide bearing, its characterized in that:

Comprises a sleeve (1), a coil (2), an upper guide (3), an armature (4), a vent hole (4-1) and a lower guide (5);

The coil (2) is arranged outside the sleeve (1); a stepped through hole is formed in the sleeve (1), and the upper guide (3), the armature (4) and the lower guide (5) are arranged in the stepped through hole;

The upper guide (3) and the lower guide (5) are respectively arranged at a first step (1-1) and a second step (1-2) in the stepped through hole;

the vent hole (4-1) is arranged in the armature (4);

The upper guide (3) and the lower guide (5) are matched and jointly guide the armature (4) to move up and down along the axial direction.

2. Guide structure for a double slide bearing according to claim 1, characterized in that the coil (2) is sleeved outside the sleeve (1).

3. Guide structure of a double slide bearing according to claim 2, characterized in that the upper guide (3) is fastened at the first step (1-1) in the stepped through bore.

4. A guide structure of a double slide bearing according to claim 3, characterized in that the lower guide (5) is fastened at the second step (1-2) in the stepped through hole.

5. Guide structure of a double slide bearing according to claim 4, characterized in that the armature (4) is in a clearance fit with the upper guide (3) and the lower guide (5).