CN209766319U - Mechanical pressure switch - Google Patents

Abstract

The utility model discloses a mechanical pressure switch, which comprises a rod seat and a rod body arranged on the rod seat; and a wear-resistant structure is arranged between the rod body and the rod seat, and the rod body can move in the wear-resistant structure along a preset direction. The utility model discloses be equipped with stand wear and tear structure between the body of rod and rod seat, ceramic rod and stand wear and tear structure contact friction when frequently moving can not produce the piece, and then can guarantee the steady operation of switch, has reduced the fault rate of mechanical type switch.

Description

Mechanical pressure switch

Technical Field

The utility model relates to a pressure switch field, concretely relates to mechanical type pressure switch.

Background

The mechanical pressure switch is a simple pressure control device, and when the measured pressure rises or falls to a rated value, the pressure switch can send out an alarm or a control signal to play a role in protecting the pressure stability of the whole system. Common pressure forms include air pressure, water pressure, and oil pressure. The pressure change of the system acts on the pressure switch diaphragm in a normal state, the action of the diaphragm pushes the ceramic rod to move up and down in the rod seat, and the ceramic rod pushes the reed to act, so that the closing and the opening of the moving contact and the static contact are realized.

however, since the ceramic rod needs to frequently act in the rod seat, friction is generated between the ceramic rod and the rod seat made of PBT (polybutylene terephthalate) material in the action process, the PBT rod seat can generate debris under the action of friction force, and under the inertia of upward action of the ceramic rod, debris and foreign matters are easily brought into an inner cavity of the pressure switch and are adhered to a contact, so that the mechanical switch is in failure.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mechanical type pressure switch to solve current PBT and produce the piece easily under the friction of ceramic rod, cause the problem of mechanical type switch trouble.

In order to achieve the above object, the present invention provides the following technical solutions: a mechanical pressure switch comprises a rod seat and a rod body arranged on the rod seat; and a wear-resistant structure is arranged between the rod body and the rod seat, and the rod body can move in the wear-resistant structure along a preset direction.

according to the utility model provides a mechanical type pressure switch is equipped with stand wear and tear structure between the body of rod and rod seat, and ceramic rod and stand wear and tear structure contact friction when frequently moving can not produce the piece, and then can guarantee the steady operation of switch, has reduced mechanical type switch's fault rate.

In addition, according to the present invention, the mechanical pressure switch according to the above embodiment may further have the following additional technical features:

According to the utility model discloses an example still includes the gasket, the pole seat is installed on the gasket, the gasket is equipped with the confession the through-hole that the body of rod passed.

According to an example of the present invention, the wear resistant structure is a tubular structure connected to the through hole.

According to an example of the present invention, the gasket is integrally formed with the wear-resistant structure.

According to an example of the present invention, the material of the gasket and the wear-resistant structure comprises a metal or an alloy.

According to an example of the present invention, the wear-resistant structure comprises at least two guide posts located on both sides of the rod body, the guide posts are connected to the rod seat or the gasket.

According to an example of the present invention, the material of the guide post includes metal or alloy.

Advantages of the above additional aspects will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic structural diagram of a mechanical pressure switch according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

Fig. 3 is a schematic view of another wear-resistant structure of the mechanical pressure switch of the present embodiment.

In the drawings, the components represented by the respective reference numerals are listed below:

1. A rod seat; 2. a rod body; 3. a gasket; 4. a wear-resistant structure; 5. a through hole; 6. and a guide post.

Detailed description of the preferred embodiments

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Referring to fig. 1 and 2, the present embodiment provides a mechanical pressure switch, which includes a rod body 2 of a rod seat 1 and a gasket, and the mechanical pressure switch of the present embodiment has the same structure as the prior art except for the three structural components, and therefore is not shown in the drawings.

The rod body 2 of this embodiment is inserted in the rod seat 1, the gasket is also provided with a through hole 5 for the rod body 2 to pass through, one end of the rod body 2 passes through the upper side of the rod seat 1 and is located outside the rod seat 1, the lower end of the rod body 2 passes through the gasket on the lower side of the rod seat 1 and the lower side of the rod seat 1, and the rod body 2 can move in the up-and-down direction to push the reed (not shown in the figure) to act, so as to realize the closing and opening of the moving and static contacts.

The body of rod 2 of this embodiment, the material of pole seat 1 and gasket is the same with prior art, the body of rod 2 is ceramic material, pole seat 1 is PBT (full name is polybutylene terephthalate), the gasket adopts metal or alloy material, because pole seat 1 has certain special requirement to the material, and the structure of pole seat 1 is shown except the part that shows in the picture partial structure in addition, consequently avoid pole seat 1 to produce the piece through changing the material of pole seat 1 not only be difficult for realizing, and manufacturing cost is higher, the utility model discloses the people improves based on this.

Referring to fig. 2 or 3, the mechanical switch of the present embodiment is improved in that a wear-resistant structure 4 is disposed between the rod body 2 and the rod seat 1, and the rod body 2 can move in the wear-resistant structure 4 along a predetermined direction (an up-down direction in fig. 2), so that the rod body 2 contacts and rubs with the wear-resistant structure 4 during frequent movement, and no debris is generated, thereby ensuring stable operation of the switch and reducing a failure rate of the mechanical switch.

the wear-resistant structure 4 of the present embodiment has various structural forms, preferably, as shown in fig. 2, the present embodiment integrally connects the pad and the wear-resistant structure 4, specifically, the wear-resistant structure 4 is a tubular structure in which the pad extends into the rod seat 1 at the through hole 5, and it can be understood that the tubular structure is manufactured at the through hole 5 of the wear-resistant structure 4 by a process such as stamping, and the pad and the wear-resistant structure 4 do not need to be secondarily connected, so that the processing is convenient, and the use requirement of the wear-resistant structure 4 of the present embodiment can be met because the pad made of metal or alloy has good wear resistance.

of course, the wear-resistant structure 4 may have other structures, as shown in fig. 3, the wear-resistant structure 4 includes at least two guide posts 6 located on both sides of the rod body 2, the guide posts 6 are made of metal or alloy, and the guide posts 6 may be connected with the pad or with the rod seat 1. For another example, the wear-resistant structure 4 may be a guiding sleeve that is sleeved outside the rod body 2, and the same guiding sleeve is made of metal or alloy, and the guiding sleeve may be connected with a gasket or with the rod seat 1.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (7)

1. A mechanical pressure switch comprises a rod seat (1) and a rod body (2) arranged in the rod seat (1); the novel rod is characterized in that a wear-resistant structure (4) is arranged between the rod body (2) and the rod seat (1), and the rod body (2) can move in the wear-resistant structure (4) along a preset direction.

2. Mechanical pressure switch according to claim 1, further comprising a washer (3), wherein the stem base (1) is mounted on the washer (3), and wherein the washer (3) is provided with a through hole (5) for the stem (2) to pass through.

3. Mechanical pressure switch according to claim 2, characterized in that the wear resistant structure (4) is a tubular structure connected at the through hole (5).

4. Mechanical pressure switch according to claim 3, characterized in that the gasket (3) is integrally formed with the wear resistant structure (4).

5. Mechanical pressure switch according to any of claims 2-4, characterized in that the material of the washer (3) and the wear resistant structure (4) comprises a metal or an alloy.

6. Mechanical pressure switch according to claim 2, characterized in that the wear-resistant structure (4) comprises at least two guide posts (6) on both sides of the stem (2), the guide posts (6) being connected to the stem socket (1) or the washer (3).

7. Mechanical pressure switch according to claim 6, wherein the material of the guide post (6) comprises a metal or an alloy.