A sealing structure for auxiliary starting and stopping switch

Abstract

A secondary start and stop switch sealing structure includes a switch housing and a switch housing cover, wherein the switch housing and the switch housing cover are clamped together; a rubber sheath is arranged between the switch housing and the switch housing cover, wherein the switch housing cover is sealed together with the switch housing through the rubber sheath, and the rubber sheath is sealed together with the upper edge of the switch housing; a switch pin port is arranged at the bottom of the switch housing, wherein a switch plug body is arranged in the switch pin port, and the switch plug body is a waterproof plug body. This design not only seals the switch pin port, but also seals the switch button, thereby effectively improving the sealing reliability, reducing the switch failure rate, and extending the service life of the switch.

Description

Technical Field

[0001] The invention relates to a switch sealing structure, in particular to a secondary starting and stopping switch sealing structure, which is specifically suitable for improving the sealing performance of the switch and improving the waterproof and oil-proof performance of the switch. Background Art

[0002] The automobile engine auxiliary starting and stopping switch is installed in the engine compartment. Vehicle inspection personnel can start and stop the engine through the engine auxiliary starting and stopping switch without entering the cab.

[0003] However, the auxiliary starting and stopping switches commonly used in the market for chassis assembly use a non-sealing structure or an external rubber-coated sealing structure, which has poor sealing performance and cannot meet the chassis assembly requirements for auxiliary starting and stopping switches, resulting in a high failure rate of switch products.

[0004] The invention patent with the Chinese patent publication number CN201057467Y and the publication date of May 7, 2008 discloses a control box for the auxiliary starter switch of an automobile engine, including a control box with a protection level of IP57, one end of the control box with a protection level of IP57 is provided with a waterproof connector, and the other end is provided with a mounting bracket, and the side of the control box with a protection level of IP57 is provided with a self-reset button switch, a self-locking button switch, a three-position rocker switch, and a normal power socket, the self-reset button switch in the control box is connected to the auxiliary starter switch and the auxiliary flameout switch, the self-locking button switch is connected to the emergency double flash light switch, the three-position rocker switch is connected to the waterproof connector, and the waterproof connector also provides power to the normal power socket. Although the invention can seal the switch socket, it still has the following defects:

[0005] The switch button of the invention is not designed to be sealed, so liquid can easily enter the switch through the gap at the switch button, causing the switch to malfunction. Summary of the invention

[0006] The purpose of the present invention is to overcome the problem of poor sealing performance in the prior art and to provide a sealing structure of a secondary starting and stopping switch with good sealing performance.

[0007] To achieve the above objectives, the technical solution of the present invention is:

[0008] A secondary start and stop switch sealing structure, comprising a switch housing and a switch housing cover, wherein the switch housing and the switch housing cover are tightly matched;

[0009] A rubber sheath is arranged between the switch housing and the switch housing cover, the switch housing cover is sealed with the switch housing through the rubber sheath, and the rubber sheath is sealed with the upper edge of the switch housing.

[0010] A switch pin port is arranged at the bottom of the switch housing, a switch plug body is arranged in the switch pin port, and the switch plug body is a waterproof plug body.

[0011] The rubber sheath comprises a rubber key cover, a rubber sealing ring and a rubber pressing edge of an integrated structure, the edge of the rubber key cover is vertically connected to the top of the rubber sealing ring, and the bottom of the rubber sealing ring is vertically connected to the inner circumference of the rubber pressing edge;

[0012] The switch housing cover comprises an outer ring fixing housing, an inner ring pressing housing and a top cover body, a long circular hole is opened in the middle of the top cover body, the bottom surface of the top cover body is vertically connected to the top surfaces of the outer ring fixing housing and the inner ring pressing housing respectively, and the outer ring fixing housing is sleeved on the outer side of the inner ring pressing housing;

[0013] A mounting ring is provided at the upper end of the switch housing, the rubber sealing ring is sealingly matched with the step side wall of the mounting ring, the bottom surface of the rubber pressing edge is in contact with the step surface of the mounting ring, the inner ring pressing shell is sealingly matched with the step surface through the rubber pressing edge, and the outer ring fixing shell is clamped and matched with the side wall below the mounting ring on the switch housing.

[0014] At least three layers of annular sealing strips are arranged on the inner side of the rubber sealing ring, and the annular sealing strips are interference fit with the step side wall.

[0015] The cross section of the annular sealing strip is triangular, and the thickness d of the annular sealing strip is 2-5 mm.

[0016] The cross section of the annular sealing strip is an arc surface, and the thickness d of the annular sealing strip is 1.5-4 mm.

[0017] The rubber sheath is made of chloroprene rubber.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The switch shell cover in the auxiliary start and stop switch sealing structure of the present invention is sealed with the switch housing through a rubber sheath, and the rubber sheath is sealed with the upper edge of the switch housing, so that the switch button of the present design is sealed, and liquid is prevented from entering the switch housing through the gap of the button. At the same time, the present design adopts two-stage sealing to improve the sealing reliability of the switch, and its sealing level reaches IP6K9K / IPX7 / IPX9K. Therefore, the switch of the present design has good sealing performance and can achieve IP6K9K / IPX7 / IPX9K level sealing.

[0020] 2. The switch plug in the sealing structure of the auxiliary start and stop switch of the present invention is a waterproof plug. There is no hole on the switch housing of this design that connects the inside and outside of the housing. Therefore, this design only has sealing requirements at the top switch button and the bottom switch pin port. The top is designed with a rubber sheath seal and the bottom uses a waterproof plug, so that the entire switch housing is sealed, which effectively improves the sealing reliability of the switch and avoids the switch from malfunctioning due to the entry of sealing liquid. Therefore, this design seals the switch housing as a whole, effectively improving the sealing reliability.

[0021] 3. In the sealing structure of the auxiliary start and stop switch of the present invention, the inner ring compression shell is sealed with the step surface through the rubber compression edge, realizing the primary sealing of the switch top, and at least three layers of annular sealing strips are arranged on the inner side of the rubber sealing ring to have an interference fit with the step side wall, realizing the secondary sealing of the switch top, strengthening the sealing effect, and effectively improving the sealing reliability. Therefore, this design adopts secondary sealing and has high reliability.

[0022] 4. The rubber sheath in the sealing structure of the auxiliary start and stop switch of the present invention is made of chloroprene rubber. Since the switch of this design is installed on the chassis, it not only has requirements for its sealing performance, but also has high requirements for the temperature difference tolerance of its working environment. The working temperature range is: -40℃~+130℃. The use of chloroprene rubber can ensure that this design can still maintain sealing under extreme temperature conditions. Therefore, the temperature tolerance range of this design is large and can adapt to the temperature and sealing requirements of chassis installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 yes Figure 1 Top view of the .

[0025] Figure 3 yes Figure 1 Schematic diagram of the structure of the switch shell cover.

[0026] Figure 4 yes Figure 3 Schematic diagram of the structure of the rubber sheath.

[0027] Figure 5 This is Example 2 of the present invention.

[0028] Figure 6 This is Example 3 of the present invention.

[0029] In the figure: switch housing 1, mounting ring platform 11, step side wall 12, step surface 13, switch pin port 14, switch plug body 15, switch housing cover 2, outer ring fixing housing 21, inner ring pressing housing 22, top cover body 23, oblong hole 24, rubber sheath 3, rubber button cover 31, rubber sealing ring 32, rubber pressing edge 33, annular sealing strip 34. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] See also Figures 1 to 6 , a secondary starting and stopping switch sealing structure, comprising a switch housing 1 and a switch housing cover 2, wherein the switch housing 1 and the switch housing cover 2 are tightly matched;

[0032] A rubber sheath 3 is provided between the switch housing 1 and the switch housing cover 2 . The switch housing cover 2 is sealed with the switch housing 1 through the rubber sheath 3 . The rubber sheath 3 is sealed with the upper edge of the switch housing 1 .

[0033] A switch pin port 14 is disposed at the bottom of the switch housing 1 , and a switch plug body 15 is disposed in the switch pin port 14 . The switch plug body 15 is a waterproof plug body.

[0034] The rubber cover 3 includes a rubber key cover 31, a rubber sealing ring 32 and a rubber pressing edge 33 of an integrated structure, wherein the edge of the rubber key cover 31 is vertically connected to the top of the rubber sealing ring 32, and the bottom of the rubber sealing ring 32 is vertically connected to the inner circumference of the rubber pressing edge 33;

[0035] The switch housing cover 2 includes an outer ring fixing housing 21, an inner ring pressing housing 22 and a top cover 23. An oblong hole 24 is opened in the middle of the top cover. The bottom surface of the top cover 23 is vertically connected to the top surfaces of the outer ring fixing housing 21 and the inner ring pressing housing 22 respectively. The outer ring fixing housing 21 is sleeved on the outer side of the inner ring pressing housing 22.

[0036] A mounting ring platform 11 is provided at the upper end of the switch housing 1, the rubber sealing ring 32 is sealed with the step side wall 12 of the mounting ring platform 11, the bottom surface of the rubber pressing edge 33 is in contact with the step surface 13 of the mounting ring platform 11, the inner ring pressing shell 2 is sealed with the step surface 13 through the rubber pressing edge 33, and the outer ring fixing shell 21 is clamped with the side wall below the mounting ring platform 11 on the switch housing 1.

[0037] At least three layers of annular sealing strips 34 are arranged inside the rubber sealing ring 32 , and the annular sealing strips 34 are interference fit with the step side wall 12 .

[0038] The cross section of the annular sealing strip 34 is triangular, and the thickness d of the annular sealing strip 34 is 2-5 mm.

[0039] The cross section of the annular sealing strip 34 is an arc surface, and the thickness d of the annular sealing strip 34 is 1.5-4 mm.

[0040] The rubber sheath 3 is made of chloroprene rubber.

[0041] The principle of the present invention is described as follows:

[0042] The operating temperature range of the switch in this design is: -40℃~+130℃. After analysis, the key to this parameter lies in the material selection of the rubber sheath 3. Other parts can easily meet this temperature requirement. In order to meet this technical condition, we select CR (chloroprene rubber) as the material of the rubber sheath. This material has good physical and mechanical properties, oil resistance, heat resistance, flame resistance, sunlight resistance, ozone resistance, acid and alkali resistance, and chemical reagent resistance. It has high tensile strength, elongation and reversible crystallinity, and good adhesion. It can withstand 120-150℃ in the short term and can be used for a long time at 80-100℃, and has a certain flame retardancy.

[0043] The switch plug 15 is a waterproof plug. The switch plug 15 of the present design can use a plug of the Tyco 114-18679-3 model.

[0044] Embodiment 1:

[0045] A secondary starting and stopping switch sealing structure comprises a switch housing 1 and a switch housing cover 2, wherein the switch housing 1 and the switch housing cover 2 are clamped together; a rubber sheath 3 is arranged between the switch housing 1 and the switch housing cover 2, the switch housing cover 2 is sealed together with the switch housing 1 through the rubber sheath 3, and the rubber sheath 3 is sealed together with the upper edge of the switch housing 1; a switch pin port 14 is arranged at the bottom of the switch housing 1, a switch plug 15 is arranged in the switch pin port 14, and the switch plug 15 is a waterproof plug.

[0046] Embodiment 2:

[0047] Embodiment 2 is substantially the same as Embodiment 1, except that:

[0048] The rubber sheath 3 includes a rubber button cover 31, a rubber sealing ring 32 and a rubber pressing edge 33 of an integrated structure. The edge of the rubber button cover 31 is vertically connected to the top of the rubber sealing ring 32, and the bottom of the rubber sealing ring 32 is vertically connected to the inner circumference of the rubber pressing edge 33; the switch housing cover 2 includes an outer ring fixing shell 21, an inner ring pressing shell 22 and a top cover body 23, and an oblong hole 24 is provided in the middle of the top cover body. The bottom surface of the top cover body 23 is vertically connected to the top surfaces of the outer ring fixing shell 21 and the inner ring pressing shell 22 respectively, and the outer ring fixing shell 21 is sleeved on the outer side of the inner ring pressing shell 22; the upper end of the switch housing 1 is provided with a mounting ring platform 11, the rubber sealing ring 32 is sealed with the step side wall 12 of the mounting ring platform 11, the bottom surface of the rubber pressing edge 33 is in contact with the step surface 13 of the mounting ring platform 11, the inner ring pressing shell 2 is sealed with the step surface 13 through the rubber pressing edge 33, and the outer ring fixing shell 21 is clamped with the side wall below the mounting ring platform 11 on the switch housing 1; at least three layers of annular sealing strips 34 are arranged on the inner side of the rubber sealing ring 32, and the annular sealing strips 34 are interference-fitted with the step side wall 12; the cross-section of the annular sealing strip 34 is triangular, and the thickness d of the annular sealing strip 34 is 2-5 mm; the manufacturing material of the rubber sheath 3 is chloroprene rubber.

[0049] Embodiment 3:

[0050] Embodiment 3 is substantially the same as Embodiment 2, except that:

[0051] The cross section of the annular sealing strip 34 is an arc surface, and the thickness d of the annular sealing strip 34 is 1.5-4 mm.

Claims

1. A secondary start and stop switch sealing structure, comprising a switch housing (1) and a switch housing cover (2), wherein the switch housing (1) and the switch housing cover (2) are tightly fitted, and characterized in that: A rubber sheath (3) is provided between the switch housing (1) and the switch housing cover (2); the switch housing cover (2) is sealed with the switch housing (1) via the rubber sheath (3); and the rubber sheath (3) is sealed with the upper edge of the switch housing (1); The rubber sleeve (3) comprises a rubber key cover (31), a rubber sealing ring (32) and a rubber pressing edge (33) of an integrated structure, wherein the edge of the rubber key cover (31) is vertically connected to the top of the rubber sealing ring (32), and the bottom of the rubber sealing ring (32) is vertically connected to the inner circumference of the rubber pressing edge (33); The switch housing cover (2) comprises an outer ring fixing housing (21), an inner ring pressing housing (22) and a top cover body (23); a long circular hole (24) is opened in the middle of the top cover body; the bottom surface of the top cover body (23) is vertically connected to the top surfaces of the outer ring fixing housing (21) and the inner ring pressing housing (22), respectively; the outer ring fixing housing (21) is sleeved on the outer side of the inner ring pressing housing (22); The upper end of the switch housing (1) is provided with a mounting ring platform (11), the rubber sealing ring (32) is in sealing cooperation with the step side wall (12) of the mounting ring platform (11), the bottom surface of the rubber pressing edge (33) is in contact with the step surface (13) of the mounting ring platform (11), the inner ring pressing shell (2) is in sealing cooperation with the step surface (13) via the rubber pressing edge (33), and the outer ring fixing shell (21) is in clamping cooperation with the side wall below the mounting ring platform (11) on the switch housing (1); At least three layers of annular sealing strips (34) are arranged on the inner side of the rubber sealing ring (32), and the annular sealing strips (34) are interference-fitted with the step side wall (12); The bottom of the switch housing (1) is provided with a switch pin port (14), a switch plug body (15) is provided in the switch pin port (14), and the switch plug body (15) is a waterproof plug body; the manufacturing material of the rubber sheath (3) is chloroprene rubber.

2. The auxiliary starting and stopping switch sealing structure according to claim 1, characterized in that: The cross section of the annular sealing strip (34) is triangular, and the thickness d of the annular sealing strip (34) is 2-5 mm.

3. The auxiliary starting and stopping switch sealing structure according to claim 1, characterized in that: The cross section of the annular sealing strip (34) is an arc surface, and the thickness d of the annular sealing strip (34) is 1.5-4 mm.

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