CN104901062B - tail accessory and the connector using the tail accessory - Google Patents

Abstract

The invention relates to a tail accessory and a connector using the tail accessory. The tail accessory includes an accessory housing provided with a sealing ring. The sealing ring includes a sealing ring body whose axis extends in the left and right directions. The inner side of the ring layer is provided with at least two layers of inner sealing ring layers arranged sequentially from outside to inside, and the adjacent two layers of inner sealing ring layers are connected through a destructible connection structure or each inner sealing ring layer is connected to the inner sealing ring layer through a destructible connection structure. The outer seal ring layers are connected as described above. The invention solves the problem in the prior art that the size range of the cable outer diameter applicable to the sealing ring in the tail attachment is small.

Description

Tail attachment and connector using the tail attachment

technical field

The present invention relates to a tail attachment and a connector using the tail attachment.

Background technique

In the field of connectors, it is necessary to use tail accessories to seal the corresponding cables. The existing tail accessories, such as the "tail accessories of electrical connectors" disclosed in Chinese patent CN102832496A, include an accessory shell and are screwed into the accessory shell. The nut at the rear end of the body, the accessory housing is set on the connector housing when in use, and a sealing rubber tube, namely a sealing ring, is arranged between the accessory housing and the nut. When in use, the cable passes through the inner hole of the sealing ring along the front and rear directions. , tighten the nut, and the nut pushes the sealing ring so that the sealing ring elastically deforms in the radial direction of the cable and seals with the cable, so that the tail of the connector is waterproof. This kind of sealing ring in the existing tail accessories has the following problems: the inner hole diameter of the sealing ring is a fixed value, so each sealing ring can only seal a small range of cables. The outer diameter of the cable will have a large variation range. In order to ensure the waterproof and dustproof performance of the product, it is necessary to communicate the outer diameter of the cable used in advance and select a matching sealing ring to seal the cable. Stocking up brings great difficulties, and it also increases the variety of products, making it easy for customers to make mistakes.

Contents of the invention

The purpose of the present invention is to provide a tail attachment to solve the problem in the prior art that the sealing ring in the tail attachment is suitable for a smaller size range of the cable outer diameter; the purpose of the present invention is also to provide a connector.

In order to solve the problems referred to above, the technical scheme of tail attachment among the present invention is:

The tail attachment includes an accessory housing provided with a sealing ring. The sealing ring includes a sealing ring body whose axis extends in the left and right directions. The sealing ring body includes an outer sealing ring layer. For the second inner sealing ring layer, two adjacent inner sealing ring layers are connected through a destructible connection structure or each inner sealing ring layer is connected to the outer sealing ring layer through a destructible connection structure.

The right end surface of the seal ring body is provided with an end face groove coaxial with the seal ring body for dividing the seal ring body and forming each inner seal ring layer, and passing between two adjacent inner seal ring layers The destructible connection structure is connected, and the part of the seal ring body between the groove bottom of the end surface groove and the left end surface of the seal ring body constitutes the destructible connection structure that can be torn.

The outer diameter of the sealing ring body gradually increases from left to right, and the area of the right end surface of the sealing ring body is greater than the area of the left end surface of the sealing ring body.

The technical scheme of tail attachment among the present invention is:

The tail attachment includes an accessory housing provided with a sealing ring. The sealing ring includes a sealing ring body whose axis extends in the left and right directions. The sealing ring body includes an outer sealing ring layer. An inner sealing ring layer is arranged inside the outer sealing ring layer. The inner sealing ring The ring layer is connected with the outer sealing ring layer through a destructible connection structure.

The right end surface of the seal ring body is provided with an end face groove coaxial with the seal ring body for dividing the seal ring body to form the inner and outer seal ring layers, and the groove bottom of the end face groove reaches the seal ring The body part of the seal ring between the left end surfaces of the body constitutes the breakable connection structure that can be torn.

The outer diameter of the sealing ring body gradually increases from left to right, and the area of the right end surface of the sealing ring body is greater than the area of the left end surface of the sealing ring body.

The technical scheme of the connector in the present invention is:

The connector includes a connector housing and a tail attachment arranged at the tail of the connector housing. The tail attachment includes an attachment housing provided with a seal ring. The seal ring includes a seal ring body whose axis extends in the left and right directions. The seal ring body includes an outer Sealing ring layer, the inner side of the outer sealing ring layer is provided with at least two inner sealing ring layers arranged in sequence from outside to inside, and the adjacent two inner sealing ring layers are connected by a destructible connection structure or each inner sealing ring layer passes through A breakable connection structure is connected to the outer gasket layer.

The right end surface of the seal ring body is provided with an end face groove coaxial with the seal ring body for dividing the seal ring body and forming each inner seal ring layer, and passing between two adjacent inner seal ring layers The destructible connection structure is connected, and the part of the seal ring body between the groove bottom of the end surface groove and the left end surface of the seal ring body constitutes the destructible connection structure that can be torn.

The outer diameter of the sealing ring body gradually increases from left to right, and the area of the right end surface of the sealing ring body is greater than the area of the left end surface of the sealing ring body.

The technical scheme of the connector in the present invention is:

The connector includes a connector housing, and the tail attachment includes an accessory housing provided with a sealing ring. The sealing ring includes a sealing ring body whose axis extends in the left and right directions. The sealing ring body includes an outer sealing ring layer, and the outer sealing ring layer is arranged inside There is an inner sealing ring layer, and the inner sealing ring layer is connected to the outer sealing ring layer through a destructible connection structure.

The right end surface of the seal ring body is provided with an end face groove coaxial with the seal ring body for dividing the seal ring body to form the inner and outer seal ring layers, and the groove bottom of the end face groove reaches the seal ring The body part of the seal ring between the left end surfaces of the body constitutes the breakable connection structure that can be torn.

The outer diameter of the sealing ring body gradually increases from left to right, and the area of the right end surface of the sealing ring body is greater than the area of the left end surface of the sealing ring body.

The beneficial effects of the present invention are: the sealing ring in the present invention includes an outer sealing ring layer and an inner sealing ring layer arranged on the inner side of the outer sealing ring layer, and different sealing ring layers have inner holes with different diameters, which can be destroyed by destroying the connection structure. The number of inner sealing ring layers is reduced so as to be applicable to cables with different diameters. By changing the number of inner sealing ring layers, the outer diameter of cables applicable to the sealing ring in the present invention is larger.

Description of drawings

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

Fig. 2 is a schematic structural view of the sealing ring in Fig. 1;

3 is a schematic structural view of a sealing ring in Embodiment 2 of the connector of the present invention;

Fig. 4 is the right view of Fig. 3;

Fig. 5 is a schematic structural diagram of a sealing ring in Embodiment 3 of the connector of the present invention.

detailed description

Embodiment 1 of the connector is shown in Figures 1 to 2: it includes a connector housing 1 and a tail attachment arranged at the tail of the connector housing 1, and the tail attachment includes an attachment housing 2 and a nut 8 screwed on the right end of the tail attachment , the inner hole of the tail attachment has a tapered hole section 5 whose diameter gradually increases from left to right, a sealing ring 6 is arranged in the tapered hole section, and a stop platform 3 with a limit direction facing right is arranged at the left end of the tapered hole section , The sealing ring 6 is set between the stop platform 3 and the nut 8, and the item 7 in the figure represents a washer arranged between the sealing ring and the nut. The sealing ring includes a sealing ring body whose axis extends along the left and right directions. The sealing ring body includes an outer sealing ring layer 9, and the outer sealing ring layer 9 is provided with a plurality of inner sealing ring layers 4 arranged sequentially from outside to inside. In this embodiment Among them, the inner sealing ring layer 4 has five layers. The outer diameter of the sealing ring body gradually increases from left to right. In this embodiment, the outer peripheral surface of the sealing ring body includes a tapered section 11 whose diameter gradually increases from left to right and a cylindrical section arranged at the right end of the tapered section. 12. The size of the cylindrical section 12 is larger than the maximum size of the tapered section, and the area of the right end surface of the sealing ring body is larger than the area of the left end surface of the sealing ring body. The right end surface of the sealing ring body is provided with an end surface groove 13 coaxial with the sealing ring body for dividing the sealing ring body and forming each inner sealing ring layer. The groove bottom of the end surface groove 13 is between the left end surface of the sealing ring body The body part of the sealing ring between them constitutes a destructible connection structure 10 that can be torn, and the inner sealing ring layers of adjacent beam rings are connected through the destructible connection structure.

In actual wire making, according to the diameter of the cable, select the number of turns of the inner sealing ring layer to be torn off. When the cable diameter is large, multiple inner sealing ring layers can be torn off, so that it is suitable for a larger diameter range The cables in the cable pass through the inner hole of the innermost sealing ring layer from right to left, and then the sealing ring 6 is compressed by the nut 8, so that the sealing ring body produces radial deformation and then seals with the cable. The opening of the end face groove on the right end face of the sealing ring body has the following effects. First, the area of the right end face of the sealing ring body is relatively large, which can ensure the strength of the sealing ring. Tensile force, the end face groove is set on the right end of the sealing ring body, which can also prevent the cable from being pulled apart and destroying the connection structure. The size of the cylindrical section is larger than the maximum size of the tapered end, that is to say, when the nut squeezes the sealing ring, the deformation of the right end of the sealing ring body will be greater than the deformation of the left end of the sealing ring body, so that the corresponding end face groove can be fully blocked , to prevent dust, water, etc. from entering the end groove.

In other embodiments of the connector: the number of turns of the inner sealing ring layer can also be two turns, three turns or other turns; the destructible connection structure can also be other forms, for example, at both ends of the sealing ring body The end face grooves with the same diameter are opened, and the body part of the seal ring between the bottoms of the two end face grooves constitutes a destructible connection structure connecting adjacent inner seal ring layers; each inner seal ring layer can also be set independently, and the connection can be broken at this time The structure may be an adhesive layer arranged between adjacent inner sealing ring layers; s, of course, adjacent inner sealing ring layers may not be connected through a destructible connection structure, for example, each inner sealing ring layer is connected to the inner sealing ring layer through a destructible connection structure. The layers of the outer sealing rings are connected; the outer peripheral surface of the sealing ring body can also be completely cylindrical or conical.

Embodiment 2 of the connector is shown in FIGS. 3-4 : the difference between Embodiment 2 of the connector and Embodiment 1 of the connector is that the size of the cylindrical section 12 is the same as the maximum size of the tapered section 11 .

Embodiment 3 of the connector is shown in Figure 5: the difference between Embodiment 3 of the connector and Embodiment 2 of the connector is that the inner sealing ring layer 4 has only one layer, and the inner sealing ring layer is sealed with the outer side through a destructible connection structure. The circles are connected.

Embodiments of the sealing rings are shown in FIGS. 1-5 : the specific structure of the sealing rings is the same as that of the sealing rings described in the above connector embodiments, and will not be described in detail here.

Claims (7)

1. Tail accessories, including an accessory housing provided with a sealing ring, the sealing ring includes a sealing ring body whose axis extends in the left and right directions, and is characterized in that: the sealing ring body includes an outer sealing ring layer, and at least two outer sealing ring layers are arranged inside the outer sealing ring layer. The layers of the inner seal rings are arranged sequentially from the outside to the inside, each inner seal ring layer is connected to the outer seal ring layer through a destructible connection structure, and the right end surface of the seal ring body is provided with a The end surface groove of the line is used to divide the sealing ring body to form each inner sealing ring layer, and the adjacent two inner sealing ring layers are connected by a destructible connection structure, and the bottom of the end groove is connected to the sealing ring body The part of the seal ring body between the left end faces of the seal ring constitutes the breakable connection structure that can be torn, the breakable connection structure is located at the left end of the inner seal ring layer, and the end surface groove is located on the right side of the breakable connection structure. 2. The tail attachment according to claim 1, wherein the outer diameter of the sealing ring body gradually increases from left to right, and the area of the right end surface of the sealing ring body is greater than the area of the left end surface of the sealing ring body. 3. Tail accessories, including an accessory housing provided with a sealing ring. The sealing ring includes a sealing ring body whose axis extends in the left and right directions. It is characterized in that: the sealing ring body includes an outer sealing ring layer, and an inner layer is arranged inside the outer sealing ring layer The sealing ring layer, the inner sealing ring layer is connected with the outer sealing ring layer through a destructible connection structure, and the right end surface of the sealing ring body is provided with a coaxial hole for dividing the sealing ring body so that the inner 1. The end surface groove formed by the outer sealing ring layer, the sealing ring body part between the groove bottom of the end surface groove and the left end surface of the sealing ring body constitutes the destructible connection structure that can be torn, and the destructible connection structure is located on the inner side The left end of the sealing ring layer, the end face groove is located on the right side of the destructible connection structure. 4. The tail attachment according to claim 3, characterized in that: the outer diameter of the sealing ring body gradually increases from left to right, and the right end surface area of the sealing ring body is larger than the left end surface area of the sealing ring body. 5. The connector includes a connector housing and a tail attachment arranged at the tail of the connector housing. The tail attachment includes an attachment housing provided with a sealing ring, and the sealing ring includes a sealing ring body whose axis extends in the left and right directions. It is characterized in that : The seal ring body includes an outer seal ring layer, at least two inner seal ring layers arranged in sequence from outside to inside are arranged on the inside of the outer seal ring layer, and each inner seal ring layer is connected to the outer seal ring layer through a destructible connection structure Connection, the right end surface of the seal ring body is provided with an end face groove coaxial with the seal ring body for dividing the seal ring body and forming each inner seal ring layer, between two adjacent inner seal ring layers The gaps are connected by a destructible connection structure, the part of the seal ring body between the groove bottom of the end surface groove and the left end surface of the seal ring body constitutes the destructible connection structure that can be torn, and the destructible connection structure is located on the inner seal ring At the left end of the layer, the end face slot is on the right of the destructible connection structure. 6 . The connector according to claim 5 , wherein the outer diameter of the sealing ring body gradually increases from left to right, and the right end surface area of the sealing ring body is larger than the left end surface area of the sealing ring body. 7. A connector comprising a connector housing, the tail of which is provided with the tail attachment as claimed in claims 3-4.