CN212303268U

CN212303268U - Connection matching structure of push rod and armature

Info

Publication number: CN212303268U
Application number: CN202021009285.2U
Authority: CN
Inventors: 李艳锋; 贾爱华; 郝艳军; 董小峰
Original assignee: ANYANG KAIDI ELECTROMAGNETIC TECHNOLOGY CO LTD
Current assignee: Anyang Kaidi Magnetic Technology Co.,Ltd.
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2021-01-05
Anticipated expiration: 2030-06-05

Abstract

The utility model provides a connection cooperation structure of push rod and armature, includes armature and push rod, sets up the blind hole with the push rod riveting at the center of armature, the push rod divide into two sections of diameter variation in size at least in length, form the shaft shoulder between two sections, the little one section of diameter is inserted and is established in the blind hole in two sections, the degree of depth more than or equal to the little one section length of diameter of blind hole, the shaft shoulder laminating is on the armature terminal surface, the processing has the annular knurl on the little one section whole or partial length of diameter, annular knurl and blind hole interference fit, the push rod passes through riveting fixed connection with armature. The push rod and the armature are very firm after riveting and are not easy to loosen, and the length of the push rod entering the blind hole can be positioned through the shaft shoulder.

Description

Connection matching structure of push rod and armature

Technical Field

The utility model relates to an electro-magnet, in particular to connection cooperation structure between armature and the push rod in the electro-magnet belongs to electro-magnet technical field.

Background

The electromagnet is based on that when the power is off, the armature moves towards different directions to drive the push rod to realize corresponding work function, the push rod and the electromagnet are usually riveted together, the push rod and the armature in the electromagnet are fixedly connected and separated, and in the traditional electromagnet fixedly connected with the push rod and the armature, a blind hole riveted with the push rod is arranged in the center of the armature, then the push rod is inserted into the blind hole for riveting, and the structure has the following problems in manufacturing: the push rod is of a polished rod structure, and is easy to loosen after being used for a long time after riveting, so that noise is generated, and even action failure is caused; secondly, the depth of the blind hole is not easy to master, if the depth of the blind hole is too deep, in order to ensure the length of the push rod outside the armature, a gap exists between the inner end part of the push rod and the bottom of the blind hole, the existence of the gap can lead to looseness in the using process and change of stroke, which affects the control of the valve, in order to overcome the problem caused by the gap under the condition, when the depth of the blind hole is too deep, glue is injected into the blind hole for compensation, but even after the glue is injected, relative displacement can occur under long-term use impact, which leads to the control not in place; if the depth of the blind hole is too shallow, the length of the push rod exposed outside the armature is too long, the push rod is easy to bend and deform in use, and clamping stagnation can occur after bending and deformation, so that the processing requirement on the blind hole is high, and the processing efficiency of the armature is influenced.

Disclosure of Invention

An object of the utility model is to overcome the above-mentioned problem that exists of being connected cooperation between push rod and the armature on present electro-magnet, provide a be connected cooperation structure between push rod and the armature.

In order to realize the purpose of the utility model, the following technical proposal is adopted: the utility model provides a connection cooperation structure of push rod and armature, includes armature and push rod, sets up the blind hole with the push rod riveting at the center of armature, the push rod divide into two sections of diameter variation in size at least in length, form the shaft shoulder between two sections, the little one section of diameter is inserted and is established in the blind hole in two sections, the degree of depth more than or equal to the little one section length of diameter of blind hole, the shaft shoulder laminating is on the armature terminal surface, the processing has the annular knurl on the little one section whole or partial length of diameter, annular knurl and blind hole interference fit, the push rod passes through riveting fixed connection with armature.

Further, the method comprises the following steps of; the end part of the push rod positioned in the blind hole is conical.

Further, the method comprises the following steps of; the length of the push rod part which is processed with knurling is not less than 60 percent of the length of a small section of the whole diameter.

The utility model discloses an actively beneficial technological effect lies in: this has the annular knurl section between riveting between push rod and the armature, it is very firm after the riveting like this, difficult not hard up, the length accessible shaft shoulder location that the push rod got into the blind hole simultaneously, so need not consider the problem that the blind hole is too deep, it is simpler to make the processing blind hole become, the armature is forward with the case push rod rearward movement's in-process, the axial force that the riveting section received can effectually be shared to the shaft shoulder position, further prevent that the electro-magnet noise that the emergence is become flexible between the two is big, the action scheduling problem that does not target in place, this structure is though simple, but armature machining efficiency and electro-magnet life scheduling problem have been solved.

Drawings

FIG. 1 is a schematic view of an armature and a push rod secured together.

Fig. 2 is a schematic diagram with the armature and the push rod separated.

Fig. 3 is a schematic view of the internal part of the structure of the armature and the push rod installed in the electromagnet.

Detailed Description

In order to explain the utility model more fully, the utility model provides an implementation example. These examples are merely illustrative of the present invention and do not limit the scope of the present invention.

The invention is explained in further detail with reference to the drawings, in which the reference symbols are: 1: an armature; 2: a push rod; 3: blind holes; 4: a section of small diameter; 5: a shaft shoulder; 6: knurling; 7: a taper shape; 8: and (4) guiding a sleeve.

As shown in the attached drawings, the connection and matching structure of the push rod and the armature comprises an armature 1 and a push rod 2, wherein a blind hole 3 riveted with the push rod is formed in the center of the armature, the push rod is at least divided into two sections with different diameters in length, and 4 is a section with a small diameter; a shaft shoulder 5 is formed between the two sections, the section 4 with the small diameter in the two sections is inserted into the blind hole 4, the depth of the blind hole is more than or equal to the length of the section with the small diameter in the two sections, the shaft shoulder 5 is attached to the end face of the armature, knurling 6 is processed on the whole or part of the section with the small diameter, the length of the part of the push rod processed with the knurling is not less than 60% of the length of the section with the small diameter in the whole, the knurling is in interference fit with the blind hole, and the push rod is; the end of the push rod in the blind hole is conical 7. Fig. 3 is a schematic diagram of the structure applied to the electromagnet, the shaft shoulder part not only solves the problem of the positioning length of the push rod, but also can effectively share the axial force during operation, so that the axial force of the riveting section during operation can be reduced, the riveting section is firmer and more reliable, and the service life is prolonged.

After the embodiments of the present invention have been described in detail, those skilled in the art can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above claims, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention all fall within the scope of the technical solution of the present invention, and the present invention is not limited to the embodiments of the examples given in the specification.

Claims

1. The utility model provides a connection cooperation structure of push rod and armature, includes armature and push rod, offers the blind hole with the push rod riveting at the center of armature, its characterized in that: the length of the push rod is at least divided into two sections with different diameters, a shaft shoulder is formed between the two sections, the section with the small diameter in the two sections is inserted into the blind hole, the depth of the blind hole is larger than or equal to the length of the section with the small diameter, the shaft shoulder is attached to the end face of the armature, knurling is processed on the whole or part of the length of the section with the small diameter, the knurling is in interference fit with the blind hole, and the push rod is fixedly connected with the armature through riveting.

2. The connection fitting structure of a push rod and an armature according to claim 1, wherein: the end part of the push rod positioned in the blind hole is conical.

3. The connection fitting structure of a push rod and an armature according to claim 1, wherein: the length of the push rod part which is processed with knurling is not less than 60 percent of the length of a small section of the whole diameter.