CN212648088U

CN212648088U - Waterproof limit switch

Info

Publication number: CN212648088U
Application number: CN202021949143.4U
Authority: CN
Inventors: 侯虎年
Original assignee: Zhejiang Yunuo Electric Technology Co ltd
Current assignee: Zhejiang Yunuo Electric Technology Co ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-03-02
Anticipated expiration: 2030-09-09

Abstract

The utility model discloses a waterproof limit switch, which comprises a shell, wherein a rotating shaft is installed at the top of the shell, a switch core is installed at the inner side of the shell, a terminal is fixedly connected on the switch core, a wire outlet is formed in the bottom of the shell, the terminal is connected with a wire through the wire outlet, the wire outlet at the bottom of the shell is sealed through epoxy resin to form an encapsulating part, and the shell is screwed by adopting a cover plate and a connecting piece to realize the sealing of the shell; by changing the structure of the transmission shaft, the waterproof rubber ring is added to the transmission rotating shaft part, and the proper interference magnitude of the rubber ring is controlled, so that double insurance is formed, and the water inlet risk of the switch is greatly reduced; the sealing mode of the switch outlet is changed, the lead is connected to the inside of the switch, and then the outlet is sealed by epoxy resin, so that water can be completely locked outside the switch; meanwhile, a layer of silica gel is arranged on the rubber ring of the cover plate, the gap of the rubber ring is completely filled, and water can be completely isolated outside the switch.

Description

Waterproof limit switch

Technical Field

The utility model belongs to the technical field of limit switch, concretely relates to waterproof limit switch.

Background

The conventional limit switch needs to be opened to be wired, a gap is easy to appear between the cover plate and the shell, the waterproof effect is poor, the limit switch is limited, and therefore the waterproof limit switch is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a waterproof limit switch to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a waterproof limit switch, includes the shell, the pivot is installed at the top of shell, the switch core is installed to the inboard of shell, fixedly connected with terminal on the switch core, the wire hole has been seted up to the bottom of shell, the terminal passes through the wire hole and is connected with the wire, the wire hole of shell bottom seals and forms the embedment portion through epoxy, the shell adopts apron and connecting piece to screw the airtight of realizing the shell, the surface of apron is provided with and is used for sealed silica gel sealing, just the cover is equipped with the second sealing washer on the lateral wall of pivot.

Furthermore, the bottom of the shell is screwed with a waterproof connector, and the waterproof connector is positioned on the outer side of the lead.

Further, the surface mounting of apron has first sealing washer, the silica gel sealing part is located the outside of first sealing washer.

Further, the number of the second sealing rings is two.

Further, a push rod is installed at the top of the switch core.

Compared with the prior art, the beneficial effects of the utility model reside in that:

by designing the switch, the structure of the transmission shaft is changed, the waterproof rubber rings are additionally arranged on the transmission rotating shaft part, the proper interference magnitude of the rubber rings is controlled, the condition that the switch is not reset can not occur when the switch transmission shaft rotates, water can be blocked outside the switch, even if the first rubber ring is damaged, the second rubber ring can also block the water outside the switch, double safety is formed, and the water inlet risk of the switch is greatly reduced; the sealing mode of the switch outlet is changed, a lead is matched with the switch, the lead is connected to the inside of the switch, and then the outlet is sealed by epoxy resin, so that the water can be completely locked outside the switch by the method; meanwhile, the sealing mode of the switch cover plate is changed, a layer of silica gel is arranged on the rubber ring of the cover plate, the silica gel is used for filling, the gap of the rubber ring is completely filled, and water can be completely isolated outside the switch.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the cover plate of the present invention;

FIG. 3 is a schematic structural view of the rotating shaft of the present invention;

in the figure: 1. a housing; 2. a rotating shaft; 3. a push rod; 4. a switch core; 5. a terminal; 6. an encapsulation part; 7. a waterproof joint; 8. a wire; 9. a cover plate; 10. a first seal ring; 11. a silica gel sealing part; 12. and a second seal ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "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 simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, the utility model provides a technical scheme: a waterproof limit switch comprises a shell 1, a rotating shaft 2 is installed at the top of the shell 1, a switch core 4 is installed on the inner side of the shell 1, a terminal 5 is fixedly connected onto the switch core 4, a wire outlet is formed in the bottom of the shell 1, the terminal 5 is connected with a lead 8 through the wire outlet, the wire outlet in the bottom of the shell 1 is sealed through epoxy resin to form a filling and sealing part 6, a waterproof connector 7 is connected to the bottom of the shell 1 in a screwing mode, the waterproof connector 7 is located on the outer side of the lead 8, the shell 1 is sealed by a cover plate 9 and a connecting piece in a screwing mode to achieve sealing of the shell 1, a silica gel sealing part 11 used for sealing is arranged on the surface of the cover plate 9, a first sealing ring 10 is installed on the surface of the cover plate 9, the silica gel sealing part 11 is located on the outer side of the first sealing ring 10, the sealing, the gap of the rubber ring is completely filled, water can be completely isolated outside the switch, and the outer side wall of the rotating shaft 2 is sleeved with a second sealing ring 12.

In this embodiment, the number of the second seal rings 12 is two.

In the present embodiment, further, a push rod 3 is mounted on the top of the switch core 4.

The utility model discloses a theory of operation and use flow: the rotating shaft 2 is assembled, through designing the application, the structure of the transmission shaft is changed, 2 waterproof rubber rings are added to the transmission rotating shaft part, the proper magnitude of interference of the rubber rings is controlled, the condition that the switch is not reset can not occur when the switch transmission shaft rotates, water can be blocked outside the switch, even if the first rubber ring is damaged, the second rubber ring can block the water outside the switch to form double insurance, the terminal 5 is connected to the switch core 4 after other internal parts are assembled, the waterproof joint 7 is screwed up and clamped on the clamp, the epoxy resin is used for pouring and forming the encapsulating part 6, the sealing mode of the switch outlet is changed, a lead 8 is matched to the switch, the lead 8 is connected to the inside of the switch, then the outlet is sealed by the epoxy resin, the method can completely lock the water outside the switch, and the water can be detached from the clamp after the epoxy resin is solidified, and finally, assembling the first sealing ring 10 into the clamping groove of the cover plate 9, filling the gap between the cover plate 9 and the sealing ring with a silica gel sealing part 11, and assembling the first sealing ring on the shell 1.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a waterproof limit switch, includes shell (1), pivot (2) are installed at the top of shell (1), switch core (4) are installed to the inboard of shell (1), fixedly connected with terminal (5) are gone up in switch core (4), the wire hole has been seted up to the bottom of shell (1), terminal (5) are connected with wire (8) through the wire hole, a serial communication port, the wire hole of shell (1) bottom seals and forms embedment portion (6) through epoxy, shell (1) adopts apron (9) and connecting piece to screw the airtight of realizing shell (1), the surface of apron (9) is provided with and is used for sealed silica gel sealing portion (11), just the cover is equipped with second sealing washer (12) on the lateral wall of pivot (2).

2. The waterproof limit switch of claim 1, wherein: the bottom of shell (1) closes soon and is connected with water joint (7), just water joint (7) are located the outside of wire (8).

3. The waterproof limit switch of claim 1, wherein: the surface mounting of apron (9) has first sealing washer (10), silica gel sealing (11) are located the outside of first sealing washer (10).

4. The waterproof limit switch of claim 1, wherein: the number of the second sealing rings (12) is two.

5. The waterproof limit switch of claim 1, wherein: and a push rod (3) is installed at the top of the switch core (4).