CN108666803A - electrical connector - Google Patents

Abstract

A kind of electric connector, even the case where applying external force also can certain waterproof.Electric connector (1), has：The connector (20) of electric conductivity；The shell (10) of insulating properties keeps connector (20)；The metal shell (30) of tubular in front openings and has for being inserted in the opening portion (31) that the object side-connector of mounting hole (101) is inserted into, and storage case (10)；Containment member (40) is located at the front side of the peripheral surface (30a) of metal shell (30) and has the elastic force of inner wall (102) crimping to mounting hole (101)；Protruding portion (32), it is located at metal shell (30) and prominent from peripheral surface (30a) toward foreign side and be configured to inner wall (102) between, with gap, contact or detach with inner wall (102) according to the suppressed range of containment member (40).Containment member (40) can compress by the suppressed range also bigger than the width in the gap with inner wall (102) and be crimped on inner wall (102).

Description

electrical connector

technical field

The invention relates to an electric connector with waterproof function.

Background technique

In the past, as an electrical connector with a waterproof function installed in housings such as electronic equipment, it is known to block the space between the housing and the housing by an external sealing material to make the inside of the machine waterproof (for example, patent Literature 1).

As such an electrical connector, one shown in FIG. 12 is known. FIG. 12 is a cross-sectional view showing a state where a conventional electrical connector 200 having a waterproof function is mounted in a mounting hole 301 of a housing 300 of the device. In the electrical connector 200 shown in FIG. 12 , the sealing material 202 provided along the circumferential direction on the outer peripheral surface of the cylindrical housing 201 is crimped to the inner wall 302 of the mounting hole 301 , whereby the mounting hole 301 can be electrically connected. The space between the devices 200 is sealed inside the machine.

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2015-225712

Contents of the invention

The technical problem to be solved by the invention

However, in conventional electrical connectors with a waterproof function, the sealing material is elastically deformed by an external force in the S direction shown in FIG. Since the distance changes, a gap is generated between the sealing material and the inner wall, and there is a problem that the waterproof performance is lowered.

An object of the present invention is to provide an electrical connector that is surely waterproof even when an external force is applied.

Technical solutions adopted to solve technical problems

Regarding the electrical connector of the present invention, it is installed in a mounting hole provided on the casing of the machine and opened on the outer surface of the casing, and has: a conductive connector; an insulating housing that holds the connector ; a cylindrical shell, opening at the front and having a connector opening that can be inserted into the connector on the opposite side inserted into the mounting hole, and accommodates the shell; a sealing member is provided on the front side of the outer peripheral surface of the shell and It has an elastic force for crimping the inner wall of the mounting hole; the protruding portion is provided on the housing and protrudes outward from the outer peripheral surface and is arranged to have a gap with the inner wall, and is connected to the inner wall according to the compression range of the sealing member In contact or separation, the sealing member can be pressed against the inner wall by compressing the inner wall at a compression range larger than the width of the gap.

When an external force is applied from the mating side connector in the up, down, left, and right directions, the distance between the inner wall of the mounting hole and the housing will change, and the part of the sealing member that receives a large pressing force through the inner wall will be elasticized with a large compression range. When deforming, the protruding portion disposed with a gap between the inner wall and the inner wall abuts against the inner wall, thereby restricting the compression range of the sealing member from becoming larger, except for the portion of the sealing member that receives a large pressing force through the inner wall The part is crimped to the inner wall with a compression range larger than the width of the gap, so the crimped state of the inner wall is maintained.

Invention effect

According to the present invention, even when an external force is applied, waterproofing can be ensured.

Description of drawings

FIG. 1 is a perspective view of an electrical connector according to a first embodiment of the present invention.

Fig. 2 is a plan view of the electrical connector according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional view along line A-A of FIG. 2 .

4 is a cross-sectional view of a state in which the electrical connector according to the first embodiment of the present invention is mounted in a mounting hole of a housing.

5 is an enlarged cross-sectional view of a state in which the electrical connector according to the first embodiment of the present invention is mounted in the mounting hole of the housing.

6 is a cross-sectional view showing a state where an external force is applied while the electrical connector according to the first embodiment of the present invention is mounted in the mounting hole of the housing.

Fig. 7 is a plan view of an electrical connector according to a second embodiment of the present invention.

Fig. 8 is a B-B sectional view of Fig. 7 .

Fig. 9 is a perspective view of a sealing material according to a second embodiment of the present invention.

Fig. 10 is a cross-sectional view of a sealing material according to a second embodiment of the present invention.

Fig. 11 is a cross-sectional view of a state in which an electrical connector according to a second embodiment of the present invention is mounted in a mounting hole of a housing.

12 is a cross-sectional view showing a state where a conventional electrical connector having a waterproof function is mounted in a mounting hole of a casing.

Symbol Description

1: Electrical connector

2: Electrical connector

10: shell

11: Main body

12: plate-shaped part

20: connector

21: Connecting part

22: Terminal part

23: fixed part

30: metal case

30a: Outer peripheral surface

31: opening

32: protrusion

40: sealing member

43: Crimping part

44: front end

45: opening

50: Auxiliary frame

100: frame

101: Mounting hole

102: inner wall

130: metal case

130a: outer peripheral surface

131: opening

132: protrusion

140: sealing member

143: Crimping part

144: front end

145: opening

146: Concave

Detailed ways

Hereinafter, the electrical connector according to the embodiment of the present invention will be described in detail with appropriate reference to the drawings. In the figure, the x-axis, y-axis and z-axis form three-axis Cartesian coordinates, the positive direction of the y-axis is the front direction, the negative direction of the y-axis is the rear direction, the x-axis direction is the left-right direction, and the z-axis The positive direction is the upward direction, and the negative direction of the z-axis is the downward direction.

(first embodiment)

(Construction of electrical connector)

The structure of the electrical connector 1 according to the first embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 5 .

The electrical connector 1, as shown in Figure 4, is arranged on the casing 100 of the machine and is installed in the mounting hole 101 opened on the outer surface of the casing 100, and has: a housing 10, a connector 20, a metal shell 30, a sealing member 40. Auxiliary frame 50.

The case 10 is formed of an insulating material, and holds the connector 20 . The housing 10 includes a main body portion 11 and a plate portion 12 .

The main body 11 is press-fitted into the metal case 30 to be fixed. Furthermore, the means for fixing the main body 11 to the metal case 30 is not limited to press-fitting, and may be integrally formed or engaged.

The plate-shaped part 12 protrudes forward from the front end of the main body part 11, and is fitted with an unillustrated counterpart connector.

The connector 20 is formed of a conductive material, and has a connecting portion 21 , a terminal portion 22 , and a fixing portion 23 .

The connecting portion 21 is exposed on the surface of the plate portion 12 and can be connected to a connecting piece of the mating connector.

The terminal portion 22 protrudes rearward from the rear end of the main body portion 11 and is connected to a conductive portion of a substrate (not shown) by solder or the like.

The fixing part 23 is fixed to the main body part 11 by integral molding. The means for fixing the fixing part 23 to the main body part 11 is not limited to integral molding, but may also be press fitting or engaging.

The metal case 30 is provided with an opening 31 opened in the front, into which a mating connector inserted into the mounting hole 101 from the front can be inserted, and accommodates the housing 10 holding the connector 20 . The metal case 30 includes a protruding portion 32 protruding outward from the outer peripheral surface 30a.

The protrusions 32 are provided in plural along the circumferential direction of the outer peripheral surface 30a, and are provided at positions facing each other in the vertical direction of the outer peripheral surface 30a and positions facing each other in the left-right direction of the outer peripheral surface 30a. Moreover, the protruding part 32 may be provided in plural at random positions along the circumferential direction of the outer peripheral surface 30a.

The protruding portion 32 is provided behind the seal member 40 and on the seal member 40 side between the seal member 40 and the auxiliary frame 50 . The protruding portion 32 is formed by pressing the metal case 30 . The protruding portion 32 is arranged in the state shown in FIGS. There is a gap with the inner wall 102 . The protruding portion 32 contacts or separates from the inner wall 102 according to the compression range of the sealing member 40 .

The sealing member 40 is ring-shaped and formed of elastic material, is provided at the front end of the outer peripheral surface 30 a of the metal case 30 , and includes a crimping portion 43 , a front end portion 44 , and an opening portion 45 . In the state shown in FIGS. 4 and 5 in which the entirety of the sealing member 40 receives a substantially uniform pressing force from the inner wall 102 , the compression width is larger than the gap width R2 between the protruding portion 32 and the inner wall 102 . R1 (R1>R2) is compressed by the inner wall 102 and pressed against the inner wall 102 . In addition, in FIG. 5 , the dotted line portion of the sealing member 40 indicates a state before elastic deformation of the sealing member 40 .

The crimping portion 43 protrudes outward and is crimped to the inner wall 102 .

The front end portion 44 protrudes further forward than the metal case 30 and covers the front end surface of the metal case 30 .

The opening 45 penetrates in the front-rear direction to enable insertion of the mating connector. The opening 45 communicates with the opening 31 .

The auxiliary frame 50 is provided on the rear side of the outer peripheral surface 30a of the metal case 30, and is attached to the casing of the machine. Moreover, the electrical connector 1 may not have the auxiliary frame 50 .

(action of electrical connector)

The operation of the electrical connector 1 according to the first embodiment of the present invention will be described in detail below with reference to FIGS. 4 to 6 .

First, the electrical connector 1 is inserted into the mounting hole 101 of the housing 100 of the electronic device from behind, and the electrical connector 1 is inserted to a predetermined position in the mounting hole 101 . At this time, the crimping portion 43 of the sealing member 40 of the electrical connector 1 is pressed by the inner wall 102 of the housing 100 to deform elastically, and thus is pressed into the mounting hole 101 . Moreover, the protruding portion 32 is provided on the metal housing 30 with a gap between the inner wall 102, so that the protruding portion 32 will not be stuck to the inner wall 102 when the electrical connector 1 is pressed into the mounting hole 101, so It is possible to prevent the electrical connector 1 from being unable to be inserted into the mounting hole 101 .

In the states shown in FIGS. 4 and 5 in which the distance between the metal case 30 and the inner wall 102 is approximately equal along the circumferential direction of the outer peripheral surface 30 a of the metal case 30 , the sealing member 40 is sealed by the pressing force from the inner wall 102 . It is elastically deformed and compressed with a compression width R1, and the whole is press-contacted to the inner wall 102 by a substantially uniform pressing force from the inner wall 102 . Moreover, in the state shown in FIG. 4 and FIG. 5 , the protruding portion 32 is arranged facing each other with a gap to the inner wall 102 .

When the electrical connector 1 is connected to an unillustrated mating connector, for example, an external force is received from below through the mating connector, whereby the lower side of the sealing member 40 is elastically deformed with a relatively large compression range and becomes strong. The inner wall 102 is crimped so that the pressing state of the inner wall 102 against the entire sealing member 40 becomes uneven. At this time, as shown in FIG. 6 , the protruding portion 32 abuts against the inner wall 102 to prevent the electrical connector 1 from moving downward beyond the state of FIG. 6 relative to the mounting hole 101 . In addition, the seal member 40 is pressed against the inner wall 102 by a compression range R1 greater than the width R2 of the gap except for the lower side, and remains in the state of being pressed against the inner wall 102, so that a predetermined waterproof effect can be obtained. Moreover, the protruding portion 32 abuts against the inner wall 102 to restrict the movement of the electrical connector 1 to the mounting hole 101 , thereby preventing the electrical connector 1 from shifting relative to the housing 100 of the electronic device.

In addition, the electrical connector 1 returns to the state shown in FIG. 4 by the elastic restoring force of the sealing member 40 when the external force applied through the mating connector is released.

Here, when the distance between the metal case 30 and the inner wall 102 is uneven along the circumferential direction of the outer peripheral surface 30a due to the deviation of the installation position of the electrical connector 1 to the housing 100, even if it is It is also considered that a portion where the pressure contact force of the sealing member 40 with respect to the inner wall 102 is weakened occurs when a relatively small external force is applied from the mating connector. Even in the above case, by arranging the protruding portion 32 to have a gap with respect to the inner wall 102, when an external force is applied, the protruding portion 32 abuts against the inner wall 102, thereby restricting the compression range of the sealing member 40, and achieving A predetermined waterproof effect can be obtained, and the reduction of the waterproof effect caused by the installation error of the electrical connector 1 to the housing 100 can be prevented.

According to the present embodiment, by providing the protruding portion 32 behind the sealing member 40 , the protruding portion 32 can be used for positioning when the sealing member 40 is attached to the front end of the metal case 30 .

Furthermore, according to the present embodiment, by integrating the protruding portion 32 with the metal case 30, it is not necessary to provide the protruding portion 32 as a separate member, thereby suppressing an increase in the number of parts and suppressing an increase in product and manufacturing costs.

(Second Embodiment)

(Construction of electrical connector)

The structure of the electrical connector 2 according to the second embodiment of the present invention will be described in detail below with reference to FIGS. 7 to 10 .

In addition, in FIGS. 7 to 10 , the parts having the same structures as those in FIGS. 1 to 3 are denoted by the same reference numerals and their descriptions are omitted.

Regarding the electrical connector 2 of this embodiment, it is installed in the housing 100 of the machine and the mounting hole 101 opened on the outer surface of the housing 100, and has: a housing 10, a connector 20, an auxiliary frame 50, a metal The housing 130 and the sealing member 140 .

The main body portion 11 of the housing 10 is pressed into the metal case 130 to be fixed. Furthermore, the means for fixing the main body 11 to the metal case 130 is not limited to press-fitting, and may be integrally formed or engaged.

The metal case 130 is provided with an opening 131 opened at the front into which the counterpart connector can be inserted, and accommodates the housing 10 holding the connector 20 . The metal case 130 includes a protruding portion 132 protruding outward from the outer peripheral surface 130a.

The protruding parts 132 are provided in plural along the circumferential direction of the outer peripheral surface 130a, and are provided at positions facing each other in the vertical direction of the outer peripheral surface 130a and positions facing each other in the left-right direction of the outer peripheral surface 130a. Moreover, the protruding part 132 may be provided in plural at random positions along the circumferential direction of the outer peripheral surface 130a.

The protruding portion 132 is covered by a sealing member 140 . The protruding portion 132 is formed by pressing the metal case 130 . The protruding portion 132 is arranged with a gap between the metal case 130 and the inner wall 102 of the mounting hole 101 when the distance between the metal case 130 and the inner wall 102 of the mounting hole 101 is substantially equal along the circumferential direction of the outer peripheral surface 130 a of the metal case 130 . The protrusion 132 is in contact with or separated from the inner wall 102 according to the compression magnitude of the sealing member 140 .

The sealing member 140 is ring-shaped and formed of an elastic material, and is provided at the front end of the outer peripheral surface 130 a of the metal case 130 , and includes a crimping portion 143 , a front end portion 144 , and an opening portion 145 . When the sealing member 140 receives a substantially uniform pressing force from the inner wall 102 as a whole, it is compressed by a compression range larger than the width of the gap between the protruding portion 132 and the inner wall 102 , and is crimped to the inner wall. 102. The sealing member 140 includes a crimping portion 143 , a front end portion 144 , an opening portion 145 , and a concave portion 146 .

The crimping portion 143 protrudes outward and is crimped to the inner wall 102 .

The front end portion 144 protrudes further forward than the metal case 130 and covers the front end surface of the metal case 130 .

The opening 145 penetrates in the front-rear direction to enable insertion of the mating connector. The opening 145 communicates with the opening 131 .

The concave portion 146 is recessed on the inner peripheral surface at a position facing the protruding portion 132 of the sealing member 140 , and is formed in a size capable of accommodating the protruding portion 132 . The concave portion 146 is provided behind the crimping portion 143 .

The auxiliary frame 50 is provided on the rear side of the outer peripheral surface 130a of the metal case 130, and is attached to the casing of the machine. Moreover, the electrical connector 2 may not have the auxiliary frame 50 .

Moreover, the operation of the electrical connector 2 is the same as that of the electrical connector 1 , so its description is omitted.

According to this embodiment, there are: a sealing member 140 provided on the front side of the outer peripheral surface 130a of the metal case 130 and having an elastic force to be pressed against the inner wall 102 of the mounting hole 101; The surface 130 a protrudes outward and is arranged to have a gap with the inner wall 102 , and is in contact with or separated from the inner wall 102 according to the compression range of the sealing member 140 . The large compression range is compressed by the inner wall 102 and crimped to the inner wall 102 , even if an external force is applied, it can be reliably waterproofed.

Furthermore, according to the present embodiment, by providing the protruding portion 132 behind the crimping portion 143 , sufficient elastic force can be ensured when the sealing member 140 is crimped to the inner wall 102 .

Moreover, according to the present embodiment, by covering the protruding portion 132 with the sealing member 140 , the appearance of the electrical connector 2 can be made into a shape with less unevenness, and the appearance can be improved.

In addition, in the present embodiment, the entire protrusion 132 is covered by the sealing member 140 , but a part of the protrusion 132 may be covered by the sealing member.

In the present invention, the type, arrangement, number, etc. of the components are not limited to the above-mentioned embodiments, and the components can be appropriately replaced to achieve equivalent effects, etc., as long as they do not deviate from the scope of the invention. Appropriate changes.

Specifically, in the above-mentioned first and second embodiments, although the protruding portion that contacts or separates from the inner wall of the housing is provided on the metal case, the protruding portion may also be provided on a portion that faces the inner wall of the housing. Any member such as a case other than a metal case. In addition, a member having a protruding portion may be provided separately.

In addition, in the above-mentioned first and second embodiments, although the sealing member is provided at the front end of the metal case, the sealing member may also be provided slightly behind the front end of the metal case, and may be positioned opposite to the inner wall of the housing. A sealing member is provided at an arbitrary position on the metal case. In this case, the sealing member has a shape that does not cover the front end portion of the front end surface of the metal case.

In addition, in the above-mentioned first embodiment and second embodiment, although a plurality of protrusions are formed on the metal case, one protrusion may be formed over the entire circumference of the metal case.

In addition, in the above-mentioned first and second embodiments, a metal case is provided on the electric connector, but a case formed of an insulating material other than metal may be provided on the electric connector.

Industrial availability

The invention is suitable for electrical connectors with waterproof function.

Claims (3)

1. An electrical connector, which is installed in a mounting hole located on the casing of the machine and opened on the outer surface of the casing, characterized in that it has: Conductive connectors; an insulating housing that holds the connector; a cylindrical housing that is opened in front and has a connector opening for inserting the mating connector inserted into the mounting hole, and accommodates the housing; a sealing member provided on the front side of the outer peripheral surface of the housing and having an elastic force for crimping against the inner wall of the mounting hole; and a protruding portion provided on the housing, protruding outward from the outer peripheral surface and disposed with a gap between the inner wall and contacting or separating from the inner wall according to a compression range of the sealing member, The sealing member is pressed against the inner wall when the inner wall is compressed by a compression range larger than the width of the gap. 2. The electrical connector according to claim 1, characterized in that, The protrusion is provided behind the sealing member. 3. The electrical connector according to claim 1, wherein, The protrusion is at least partially covered by the sealing member.