CN112017893A

CN112017893A - Dustproof flameout switch

Info

Publication number: CN112017893A
Application number: CN202010271702.9A
Authority: CN
Inventors: 田进富; 刘占文; 郭凤江; 彭恒田; 邵逸群; 王倩
Original assignee: Shandong Huasheng Pesticide Machinery Co Ltd
Current assignee: Shandong Huasheng Pesticide Machinery Co Ltd
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2020-12-01

Abstract

The invention discloses a dustproof flameout switch, which belongs to the field of stop switches for gasoline engines, and is used for gasoline engines.A rotating handle of the dustproof flameout switch is connected with a switch seat through a handle shaft; a movable contact spring is arranged in the limit hole of the contact spring, and the other end of the movable contact spring is pressed on the movable contact; the movable contact piece is arranged in the claw fixing groove and rotates along with the rotating handle, and the movable contact piece is respectively contacted with the static contact A and the static contact B9; a dustproof ring is clamped in the dustproof ring fixing groove, and the dustproof ring, the rotating handle and the switch base form a closed cavity for accommodating the static contact A, the static contact B and the movable contact piece; a fixed contact B is arranged in the fixed groove of the fixed contact B, and a fixed contact A is arranged in the fixed groove of the fixed contact A; the steel ball guide rail is provided with a bulge for the positioning steel ball to pass through. The contact failure of the switch outlet can be avoided, the normal work of the gasoline engine is ensured, and the service life is prolonged.

Description

Dustproof flameout switch

Technical Field

The invention belongs to the field of flameout switches for gasoline engines, and particularly relates to a dustproof flameout switch.

Background

At present, a flameout switch for a gasoline engine in the prior art generally realizes the separation or contact of a movable contact and a fixed contact of the switch in a rotating or pressing mode and the like, thereby achieving the purposes of starting and flameout of the gasoline engine; because the gasoline engine is as power take off, the machines that carry are different, and the environment of work is also different, if use under the environment that the dust is diffused, or use under the state that drenches with rain, the moving contact, the static contact of flame-out switch can be covered by the dust often and lead to contact failure, perhaps turn on by the ponding and produce the short circuit phenomenon, make the gasoline engine fault rate increase, have produced the corrosion for a long time, even can not normally work.

Disclosure of Invention

The invention aims to provide a dustproof flameout switch which can avoid poor contact of a switch head, ensure the normal work of a gasoline engine and prolong the service life.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the dustproof flameout switch comprises a rotating handle, wherein a handle shaft is fixed at the bottom of the rotating handle and connected with a switch seat, a steel ball positioning hole, a contact piece pressure spring limiting hole and a piece claw fixing groove are further processed on the rotating handle, and a dustproof ring fixing groove, a static contact B fixing groove, a static contact A fixing groove, a steel ball guide rail, a rotating handle left limiting table and a rotating handle right limiting table are processed on the switch seat; a steel ball pressure spring is arranged in the steel ball positioning hole, and the other end of the steel ball pressure spring is in contact with the positioning steel ball and presses the positioning steel ball on the steel ball guide rail; a movable contact spring is arranged in the limit hole of the contact spring, and the other end of the movable contact spring is pressed on the movable contact; the movable contact piece is arranged in the claw fixing groove and rotates along with the rotating handle, and the movable contact piece is respectively contacted with the static contact A and the static contact B9; a dustproof ring is clamped in the dustproof ring fixing groove, and the dustproof ring, the rotary handle and the switch base form a closed cavity for accommodating the static contact A, the static contact B and the movable contact piece; a fixed contact B is arranged in the fixed groove of the fixed contact B, and a fixed contact A is arranged in the fixed groove of the fixed contact A; the steel ball guide rail is provided with a bulge for the positioning steel ball to pass through.

Further, the handle shaft and the rotating handle are cast into a whole.

Furthermore, the handle shaft passes through the switch seat and then is assembled on the switch seat through the clamping ring.

Furthermore, the steel ball guide rail is provided with a protrusion with a triangular cross section.

Compared with the prior art, the invention has the beneficial effects that:

the dust ring and the contact matching structure thereof can seal the rotating handle and the switch seat into a closed space, and the moving contact and the static contact are closed in the space, so that the cleanliness and the contact stability of the contacts are ensured, and the service life of the switch is prolonged.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the internal structure of the present invention.

Fig. 3 is a schematic view of the structure of the twist grip of the present invention.

Fig. 4 is a schematic structural diagram of the switch base of the present invention.

In the figure: 1. rotating the handle; 2. a handle shaft; 3. a movable contact spring; 4. a movable contact spring; 5. a static contact A; 6. a switch base; 7. a collar; 8. a dust ring; 9. a static contact B; 10. positioning the steel balls; 11. a steel ball pressure spring; 12. positioning holes for steel balls; 13. a limit hole of a contact spring; 14. a sheet claw fixing groove; 15. contact claws; 16. a dust ring fixing groove; 17. a fixed contact B fixing groove; 18. a fixed contact A groove; 19. a steel ball guide rail; 20. rotating the left handle limiting table; 21. the handle right limit table is rotated.

Detailed Description

The technical solution of the present invention will be further described and illustrated with reference to the following examples. It should be noted that the following paragraphs may refer to terms of orientation, including but not limited to "upper, lower, left, right, front, rear" and the like, which are all based on the visual orientation shown in the drawings corresponding to the specification, and should not be construed as limiting the scope or technical aspects of the present invention, but merely as facilitating better understanding of the technical aspects of the present invention by those skilled in the art.

In the description of the present specification, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Example 1

A dustproof flameout switch comprises a rotating handle, wherein a handle shaft is fixed at the bottom of the rotating handle and connected with a switch seat, a steel ball positioning hole, a contact piece pressure spring limiting hole and a piece claw fixing groove are further processed on the rotating handle, and a dustproof ring fixing groove, a static contact B fixing groove, a static contact A fixing groove, a steel ball guide rail, a rotating handle left limiting table and a rotating handle right limiting table are processed on the switch seat; a steel ball pressure spring is arranged in the steel ball positioning hole, and the other end of the steel ball pressure spring is in contact with the positioning steel ball and presses the positioning steel ball on the steel ball guide rail; a movable contact spring is arranged in the limit hole of the contact spring, and the other end of the movable contact spring is pressed on the movable contact; the movable contact piece is arranged in the claw fixing groove and rotates along with the rotating handle, and the movable contact piece is respectively contacted with the static contact A and the static contact B9; a dustproof ring is clamped in the dustproof ring fixing groove, and the dustproof ring, the rotary handle and the switch base form a closed cavity for accommodating the static contact A, the static contact B and the movable contact piece; a fixed contact B is arranged in the fixed groove of the fixed contact B, and a fixed contact A is arranged in the fixed groove of the fixed contact A; the steel ball guide rail is provided with a bulge for the positioning steel ball to pass through.

Example 2

A dustproof flameout switch, wherein handle shaft 2 and twist grip 1 casting as an organic whole, handle shaft 2 passes behind switch seat 6 and assembles on switch seat 6 through rand 7, processing has the cross section to be the protruding of triangle-shaped on the steel ball guide rail 19. The structure and connection relationship of the rest parts are the same as those described in any of the foregoing embodiments, and are not described herein again to avoid the tedious text.

On the basis of the above embodiments, the present invention continues to describe the technical features and functions of the technical features in the present invention in detail to help those skilled in the art fully understand the technical solutions of the present invention and reproduce them.

As shown in fig. 1 to 4, the dust-proof flameout switch of the present invention employs a rotating handle 1, a switch base 6 and a dust ring 8 to form a closed cavity for accommodating a static contact a5, a static contact B9 and a movable contact 4, so as to ensure that the above structure is not polluted by external dust and rainwater.

In the invention, the rotating handle 1 and the handle shaft 2 are cast into a whole, and the handle shaft 2 is assembled at the bottom of the switch base 6 through the collar 7 after passing through the switch base 6, so that the rotating handle 1 can drive the handle shaft 2 to rotate on the switch base 6.

The static contact A5 and the static contact B9 are fixed on the switch base 6.

The movable contact spring 3 is always pressed on the movable contact 4 to ensure that the movable contact 4 is reliably contacted with the fixed contact A5 and the fixed contact B9, and the movable contact 4 is fixed in the rotating handle 1 through the claw fixing groove 14 on the rotating handle 1 and rotates along with the rotating handle 1 to realize the contact and separation with the fixed contact A5.

The steel ball pressure spring 11 is arranged in the steel ball positioning hole 12 and can rotate along with the rotating handle 1. And one half of the positioning steel ball 10 is positioned in the steel ball positioning hole 12, so that the positioning steel ball can rotate together with the rotating handle 1, and is pressed on the steel ball track 19 by the steel ball pressure spring 11. The middle of the steel ball track 19 is designed into an ascending slope and a descending slope in a triangular shape, and after the rotating handle 1 rotates to cross the ascending slope, the rotating handle can automatically reach a target position along the descending slope under the action of the steel ball pressure spring 11 and the positioning steel ball 10. The handle left limit table 20 and the handle right limit table 21 are used for limiting the limit position of the left-right rotation of the rotary handle 1.

When the switch is used, in the process of clockwise rotation of the switch, the rotating handle 1 drives the movable contact piece 4 and the positioning steel ball 10 to rotate along the steel ball track 19, and the steel ball pressure spring 11 presses the positioning steel ball 10 on the steel ball track 19 all the time. When the positioning steel ball 10 goes up the slope over the steel ball track 19, the switch can automatically reach the target position under the action of the steel ball pressure spring 11. The movable contact piece 4 and the static contact piece A5 are separated in the process, and the gasoline engine can be started and normally works; on the contrary, when the switch rotates anticlockwise, the movable contact piece 4 is contacted with the static contact piece A5, the gasoline engine stops, and no matter the switch rotates clockwise or anticlockwise, the movable contact piece 4 is always contacted with the static contact piece B9, so that a conducting loop is formed when the movable contact piece 4 is contacted with the static contact piece A5. The rotating handle 1 and the switch base 6 which are assembled together are sealed into a closed cavity by the dustproof ring 8, so that the movable contact 4, the static contact A5 and the static contact B9 in the cavity are protected from being polluted by external dust and rainwater, the reliability of the switch is improved, and the service life of the switch is prolonged.

Finally, although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description of the present description is for clarity reasons only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. The utility model provides a dustproof flame-out switch, includes twist grip (1), the bottom of twist grip (1) is fixed with handle axle (2), and handle axle (2) are connected its characterized in that with switch seat (6): the rotary handle (1) is also provided with a steel ball positioning hole (12), a contact piece pressure spring limiting hole (13) and a piece claw fixing groove (14), and the switch base (6) is provided with a dust ring fixing groove (16), a static contact B fixing groove (17), a static contact A fixing groove (18), a steel ball guide rail (19), a rotary handle left limiting table (20) and a rotary handle right limiting table (21); wherein a steel ball pressure spring (11) is arranged in the steel ball positioning hole (12), and the other end of the steel ball pressure spring (11) is contacted with the positioning steel ball (10) and presses the positioning steel ball (10) on the steel ball guide rail (19); a movable contact spring (3) is arranged in the contact spring limiting hole (13), and the other end of the movable contact spring (3) is pressed on the movable contact (4); the movable contact piece (4) is arranged in the claw fixing groove (14) and rotates along with the rotating handle (1), and the movable contact piece (4) is respectively contacted with the static contact A (5) and the static contact B9; a dustproof ring (8) is clamped in the dustproof ring fixing groove (16), and the dustproof ring (8), the rotating handle (1) and the switch base (6) form a closed cavity for accommodating the static contact A (5), the static contact B (9) and the movable contact piece (4); a static contact B (9) is arranged in the static contact B fixing groove (17), and a static contact A (5) is arranged in the static contact A fixing groove (18); the steel ball guide rail (19) is provided with a bulge for the positioning steel ball (10) to pass.

2. The dust-proof extinguisher switch according to claim 1, wherein: the handle shaft (2) and the rotating handle (1) are cast into a whole.

3. The dust-proof extinguisher switch according to claim 1, wherein: the handle shaft (2) penetrates through the switch seat (6) and is assembled on the switch seat (6) through the clamping ring (7).

4. The dust-proof extinguisher switch according to claim 1, wherein: and a protrusion with a triangular cross section is processed on the steel ball guide rail (19).