Low-voltage travel switch with high sealing performance

Abstract

The utility model discloses a low-voltage travel switch with high sealing performance, which belongs to the technical field of travel switches and comprises a lower shell, an upper shell is mounted on one side of the lower shell, a moving guide column is slidably connected between the top of the lower shell and the top of the upper shell, a fixed guide sleeve is connected to the outer wall of the moving guide column, and a large spring is connected to the bottom of the fixed guide sleeve. A mounting frame is mounted in the lower shell, and the bottom of the moving guide column is connected with a small spring. According to the utility model, when the outside touches the head of the moving guide pillar, the moving guide pillar moves inwards under the action of extrusion force and drives the small spring to move at the same time, and the moving block moves inwards synchronously with the moving guide pillar under the action of elastic force of the small spring, so that the left first copper contact and the right first copper contact on the moving contact piece move downwards; and the left first copper contact and the right first copper contact are respectively contacted with the left second copper contact and the right second copper contact to generate signal closing, so that the device can reach the contacts by an accurate touch distance and is connected.

Description

TECHNICAL FIELD

[0001] The utility model belongs to stroke switch technical field especially relates to a low pressure stroke switch with high sealing property. BACKGROUND

[0002] Stroke switch is a kind of position switch (also known as limit switch), it is a commonly used small current main order electrical appliance, the collision of production mechanical parts is used to make its contact to act to realize the on or break control circuit, reach certain control purpose, usually, this kind of switch is used to limit the position or stroke of movement machine, makes movement machine according to certain position or stroke automatic stop, reverse movement, variable speed movement or automatic reciprocating movement etc.

[0003] The existing stroke switch does not have the accurate touch distance to reach the on of contact, causes the complex difficulty of debugging, brings the inconvenience to the debugging personnel and wastes time. UTILITY MODEL CONTENTS

[0004] The utility model discloses a low pressure stroke switch with high sealing property, which solves the problem of difficult debugging of traditional stroke switches.

[0005] In order to realize the above-mentioned purpose, the utility model discloses a low pressure stroke switch with high sealing property, which comprises a lower shell, an upper shell is installed on one side of the lower shell, a movement guide column is slidably connected between the lower shell and the upper shell top, a fixed guide sleeve is connected to the outer wall of the movement guide column, a large spring is connected to the bottom of the fixed guide sleeve, an installation frame is installed in the lower shell, a small spring is connected to the bottom of the movement guide column, a movement block is connected to the bottom of the small spring, movement contact pieces are connected to the two sides of the movement block, a left first copper contact and a right first copper contact are respectively installed in the two movement contact pieces, a left fixed contact piece and a right fixed contact piece are respectively installed in the lower shell, a left second copper contact is installed on the top of the left fixed contact piece, and a right second copper contact is installed on the top of the right fixed contact piece.

[0006] As a further description of the above technical solution:

[0007] The other end of the large spring is connected to the top of the installation frame, a through slot is formed in the installation frame, the small spring penetrates through the through slot, and a fixing stud is connected to the bottom of the movement block.

[0008] As a further description of the above technical solution:

[0009] The left first copper contact is located on the top of the left second copper contact, and the positions of the left first copper contact and the left second copper contact correspond to each other, the right first copper contact is located on the top of the right second copper contact, and the positions of the right first copper contact and the right second copper contact correspond to each other.

[0010] As a further description of the above technical solution:

[0011] The one side of the mounting frame is connected with the inner wall of the upper shell, and the one side of the left and right fixed contact pieces is connected with the inner wall of the upper shell.

[0012] As a further description of the above technical solution:

[0013] The outer wall of the sealing ring is connected with the inner walls of the upper shell and the lower shell, and the outer wall of the fixed guide sleeve is connected with the inner walls of the upper shell and the lower shell.

[0014] As a further description of the above technical solution:

[0015] The upper shell, the lower shell and the moving block are all made of polyamide.

[0016] As described above, due to the adoption of the above technical solution, the beneficial effects of the present application are:

[0017] 1. In the present application, when the moving guide column is touched by the outside, the moving guide column moves inward under the extrusion force, and the small spring is driven to move by the moving guide column. The moving block moves inward synchronously under the elastic force of the small spring, so that the left and right first copper contacts on the moving contact piece move downward, and the left and right first copper contacts are in contact with the left and right second copper contacts respectively to generate a signal closure, thereby enabling the device to accurately touch the contacts and be connected.

[0018] 2. In the present application, the upper shell, the lower shell and the moving block are all made of polyamide. Most travel switches on the market use metal materials for the shell, which is easy to conduct electricity. By using polyamide, an insulating material, for the shell of the upper shell and the lower shell, the conduction of the upper shell and the lower shell is effectively prevented, thereby avoiding danger to the operator during use. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 A three-dimensional structure diagram of a low-voltage travel switch with high sealing performance is provided.

[0020] Fig. 2 An internal structure diagram of a low-voltage travel switch with high sealing performance is provided.

[0021] Legend: 1, upper shell; 2, lower shell; 3, moving guide column; 4, sealing ring; 5, fixed guide sleeve; 6, large spring; 7, moving block; 8, left first copper contact; 9, left second copper contact; 10, left fixed contact piece; 11, small spring; 12, right first copper contact; 13, moving contact piece; 14, right second copper contact; 15, right fixed contact piece; 16, fixed stud; 17, mounting frame. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0023] Please refer to Figs. 1-2 The utility model provides a kind of technical scheme: a low pressure travel switch with high sealing, including lower shell 2, upper shell 1 is installed in lower shell 2 side, sliding connection has movement guide column 3 between lower shell 2 and upper shell 1 top, and movement guide column 3 outer wall is connected with fixed guide sleeve 5, and fixed guide sleeve 5 bottom is connected with big spring 6, and installation frame 17 is installed in lower shell 2, small spring 11 is connected in movement guide column 3 bottom, and small spring 11 bottom is connected with movement block 7, both sides of movement block 7 are connected with movement contact sheet 13, and left first copper contact 8 and right first copper contact 12 are respectively installed in two movement contact sheets 13, and left fixed contact sheet 10 and right fixed contact sheet 15 are respectively installed in lower shell 2, left second copper contact 9 is installed in left fixed contact sheet 10 top, right second copper contact 14 is installed in right fixed contact sheet 15 top, big spring 6 other end is connected with installation frame 17 top, and through slot is set in installation frame 17, and small spring 11 is penetrated through through slot, and fixed stud 16 is connected in movement block 7 bottom, left first copper contact 8 is located in left second copper contact 9 top, and left first copper contact 8 and left second copper contact 9 position correspond to each other, right first copper contact 12 is located in right second copper contact 14 top, and right first copper contact 12 and right second copper contact 14 position correspond to each other, one side of installation frame 17 is connected with one side of the inner wall of upper shell 1, and one side of left fixed contact sheet 10 and right fixed contact sheet 15 is connected with one side of the inner wall of upper shell 1.

[0024] Specific implementation, by setting movement guide column 3, when outside touches movement guide column 3 head, movement guide column 3 is moved inwards under the action of extrusion force, and extrudes big spring 6, and when movement guide column 3 moves down, it drives small spring 11 to move, by setting small spring 11 in compression state, movement block 7 moves inwards synchronously with movement guide column 3 under the action of the elastic force of small spring 11, left first copper contact 8 and right first copper contact 12 on movement contact sheet 13 move down, left first copper contact 8 and right first copper contact 12 respectively contact left second copper contact 9 and right second copper contact 14 to generate signal closure, so that the device can accurately touch the distance to contact and be connected.

[0025] The outer wall of the moving guide column 3 is slidably connected with a sealing ring 4, the outer wall of the sealing ring 4 is connected with the inner walls of the upper shell 1 and the lower shell 2, and the outer wall of a fixed guide sleeve 5 is connected with the inner walls of the upper shell 1 and the lower shell 2; the materials of the upper shell 1, the lower shell 2 and the moving block 7 are all polyamide, and 10% glass fiber is doped in the polyamide, so as to improve the insulation.

[0026] The upper shell 1 and the lower shell 2 are made of polyamide, so that the upper shell 1 and the lower shell 2 have good insulation, avoiding causing danger to surrounding people during use; the outer wall of the moving guide column 3 is sealed by the sealing ring 4, so that dust is avoided from being brought into the upper shell 1 and the lower shell 2 when the moving guide column 3 moves, thereby avoiding that the dust damages the electronic components inside and affects use; 10% glass fiber is doped in the polyamide, so as to improve the insulation.

[0027] Working principle: when in use, the moving guide column 3 is contacted, so that the moving guide column 3 moves downward, and then the large spring 6 is pressed when the moving guide column 3 moves downward, and then the small spring 11 is driven to move by the moving guide column 3 moving downward, so that the moving guide column 3 drives the moving block 7 to move inward synchronously through the small spring 11, so that the left first copper contact 8 and the right first copper contact 12 on the moving contact piece 13 move downward, and the left first copper contact 8 and the right first copper contact 12 are in contact with the left second copper contact 9 and the right second copper contact 14 respectively to generate a signal to close, so that operation is more convenient.

[0028] In the present application, the terms "first", "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance; the term "a plurality of" means two or more, unless otherwise specified. The terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, "connecting" can be fixed connection, or detachable connection, or integrally connected; "connected" can be directly connected, or indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances;

[0029] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A low pressure travel switch with high sealing property comprising a lower case (2), characterized in that, The lower shell (2) is mounted with the upper shell (1) on one side, the lower shell (2) and the upper shell (1) top are slidably connected with the movement guide column (3), and the outer wall of the movement guide column (3) is connected with the fixed guide sleeve (5), and the bottom of the fixed guide sleeve (5) is connected with the large spring (6), and the lower shell (2) is mounted with the mounting bracket (17), the bottom of the movement guide column (3) is connected with the small spring (11), and the bottom of the small spring (11) is connected with the movement block (7), both sides of the movement block (7) are connected with the movement contact sheet (13), and the left first copper contact (8) and the right first copper contact (12) are respectively mounted in the two movement contact sheets (13), and the left fixed contact sheet (10) and the right fixed contact sheet (15) are respectively mounted in the lower shell (2), and the left second copper contact (9) is mounted on the top of the left fixed contact sheet (10), and the right second copper contact (14) is mounted on the top of the right fixed contact sheet (15).

2. The low pressure travel switch having high sealing property according to claim 1, wherein The other end of the large spring (6) is connected with the top of the mounting bracket (17), and the mounting bracket (17) is provided with a through slot, and the small spring (11) penetrates through the through slot, and the bottom of the movement block (7) is connected with the fixed stud (16).

3. The low pressure travel switch with high sealing property according to claim 1, characterized in that, The left first copper contact (8) is located on the top of the left second copper contact (9), and the left first copper contact (8) and the left second copper contact (9) are corresponding to each other, the right first copper contact (12) is located on the top of the right second copper contact (14), and the right first copper contact (12) and the right second copper contact (14) are corresponding to each other.

4. The low pressure travel switch of claim 1, wherein, The mounting bracket (17) is connected with the inner wall of the upper shell (1) on one side, and the left fixed contact sheet (10) and the right fixed contact sheet (15) are connected with the inner wall of the upper shell (1) on one side.

5. The low voltage travel switch of claim 1, wherein, The outer wall of the movement guide column (3) is slidably connected with the sealing ring (4), and the outer wall of the sealing ring (4) is connected with the inner wall of the upper shell (1) and the lower shell (2), and the outer wall of the fixed guide sleeve (5) is connected with the inner wall of the upper shell (1) and the lower shell (2).

6. The low voltage, high sealing, travel switch of claim 1, wherein, The upper shell (1), the lower shell (2) and the movement block (7) are all made of polyamide.

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