JP2007103045A - Waterproof connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waterproof connector in which a gel is simply formed and which is superior in water-proof property regardless of the size and configuration of a terminal. <P>SOLUTION: The waterproof connector 1 comprises a housing 3, a plurality of terminals which are received in the axial direction in the housing 3 and are different in size and shape, a silicon gel 9 as a sealing material to waterproof the terminals received in the housing 3, and a compression member 10 for compressing the gel 9 in the axial direction. The compression member 10 is formed so as to move from a temporarily fixing position before compressing the gel 9 to a regularly fixing position after compressing the gel 9 in the housing 3. While the member 10 for compressing the sealing material is in the temporarily fixing position, terminals 7a, 7b are made to penetrate the gel 9 via the member 10 for compressing the sealing material. Then, the terminals 7a, 7b are received in a terminal chamber of the housing 3, and the member 10 for compressing the sealing material is moved to the regularly fixing position in the receiving state. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a waterproof connector.

  There is a waterproof connector as a connector used in a place where rainwater or the like may flow (for example, in an engine room of an automobile) among electrical connectors used to connect between wire harnesses or between a wire harness and an electrical device.

  The waterproof connector is a connector having excellent waterproof properties so as to prevent an electrical short circuit due to moisture entering the housing and a contact failure and other problems due to surface oxidation of the connection fitting due to moisture.

FIG. 9 shows a conventional waterproof connector 301.
As can be seen from FIG. 9A, the waterproof connector 301 includes a housing 303 having a plurality of terminal storage chambers 302 for individually storing a plurality of terminals 305 connected to terminals of the electric wires 304, and the housing 303. A terminal guide port 303a for guiding the terminal 305 into the terminal storage chamber 302, a gel 306 for closing the terminal guide port 303a, and a gel stopper inserted into the terminal guide port 303a for preventing the gel 306 from falling off 307.

  Further, as shown in FIG. 9B, the gel 306 has the same number of slits 308 that penetrate the gel 306 as the number of the terminal storage chambers 302. The slit 308 is disposed so as to face the opening 302a of each terminal storage chamber 302 when the gel 306 is put into the terminal guide port 303a. By forcibly inserting the terminal 305 into the slit 308, the terminal 305 is press-fitted into the terminal storage chamber 302 together with the tip of the electric wire 304 as shown in FIG. 9C.

  The gel 306 is a sealing material that is formed somewhat larger than the terminal guide opening 303a and has excellent adhesion as well known. Therefore, when the terminal guide port 303a is sealed with the gel 306, the peripheral surface of the gel 306 closely contacts the inner surface of the terminal guide port 303a. Further, when the terminal 305 is passed through the slit 308, the portion of the gel 306 where the slit 308 is formed is in close contact with the outer sheath of the wire 304. Therefore, in the waterproof connector 301, water enters the terminal storage chamber 302 from the contact point between the peripheral surface of the gel 306 and the inner surface of the terminal guide port 303a and the contact point between the slit 308 of the gel 306 and the outer cover of the wire 304. To prevent it.

  By the way, since the gel 306 is soft and the terminal 305 is metal and hard, if the terminal 305 is forcibly inserted into the slit 308, the terminal 305 scrapes off the gel 306. Then, the terminal 305 is stored in the terminal storage chamber 302 with the gel 306 thus scraped off attached to the terminal 305.

  The gel 306 scraped off and attached to the terminal 305 is interposed between the counterpart terminal of the counterpart connector and the terminal 305 when the waterproof connector 301 is connected to a counterpart connector (not shown). Further, when the gel 306 is compressed by the gel stopper member 307 inserted into the terminal guide port 303a, the gel 306 has a high density, so that the amount of the gel 306 to be scraped is less than the gel 306 in the low density state. There is a possibility that it may increase as compared with the case of scraping. Moreover, the gel 306 is an insulator. For this reason, a connection failure may occur between the terminal 305 and the counterpart terminal, and the contact reliability between the waterproof connector 301 and the counterpart connector may be reduced.

  Further, if the gel 306 is scraped off by a large amount by the terminal, the gel 306 will not function sufficiently, and the waterproofness of the connector may be deteriorated.

  Therefore, in Patent Document 1, instead of a fine slit, as shown in FIG. 10, the terminal 305 is formed in the gel 306 by providing the gel 306 with a terminal insertion hole 316 that is large enough to pass the terminal 305 and the electric wire 304. A technique for preventing the gel 306 from being scraped off by the terminal 305 without being caught is disclosed. In this case, the poor connection due to the gel scraped off by the terminal can be eliminated. However, after passing the terminal 305 through the terminal insertion hole 316, a gap is formed between the electric wire 304 and the terminal insertion hole 316, which is waterproof as it is. Therefore, after the terminal 305 is inserted into the insertion hole 316 of the gel 306, the gel 306 is pressurized from the outside to reduce the insertion hole 316, thereby improving the adhesion of the gel 306 to the electric wire 304.

  In the technique of Patent Document 1, as can be seen from FIGS. 11A and 11B, a pair of pressurizations facing each other in the direction orthogonal to the axial direction of the terminal insertion hole 316 of the gel 306. The gel 306 is pressurized by bringing the members 329 and 329 close to each other. FIG. 11A shows a state before the pressing members 329 and 329 are approached, and FIG. 11B shows a state after the approach.

  However, as described above, the pressure members 29 and 29 are brought close to each other in the direction orthogonal to the axial direction of the terminal insertion hole 316 of the gel 306 to pressurize the gel 306, and the connector terminals 305 are arranged in multiple rows. (For example, when the connector terminals are in two rows in FIG. 11 but there are three or more rows), the gel 306 is plate-shaped and the gel 306 is compressed in the direction perpendicular to the axial direction as described above. Then, combined with the fact that the plate-shaped gel is crushed three-dimensionally, there is a possibility that pressure is applied unevenly to the terminals located in the center row.

  On the other hand, the connector terminal generally moves slightly with some play after it is attached to the housing. This play is not necessarily coaxial with the terminal of the mating connector, and there is a slight shift. Even in this case, when the terminals are connected to each other, the two terminals can be corrected with each other so that both terminals can be in good contact. It is for doing so.

  However, if the pressure applied to the terminals is non-uniform as described above, the terminals will harden in a state of being displaced, causing an irreparable shift in the arrangement pitch of the terminals, so when connecting the connector and the counterpart connector The terminal of the connector and the terminal of the mating connector do not make good contact, and therefore there is a risk of poor connection.

Further, in the same connector, the terminals are not necessarily all of the same shape, and terminals of different sizes and shapes may be combined. In such a connector, if the terminal insertion hole larger than the outer diameter of the terminal and the electric wire is provided in the gel as described above, the size and shape of the terminal insertion hole of the gel must be changed according to the terminal, Such gel formation is difficult. Therefore, if the terminal insertion hole is made the same regardless of the size and shape of the terminal, the adhesion of the gel to the terminal differs depending on the terminal, and even if it is pressurized, the small terminal is difficult to adhere to the gel. As a result, there may be a problem in terms of waterproofness.
Japanese Patent No. 3565541

The present invention has been made in view of such a situation, and the problem to be solved is a new waterproofing that is easy to form a gel and is excellent in waterproofing regardless of the size and shape of the terminal. To provide a connector.

Therefore, the present invention employs the following means.
That is, the waterproof connector of the present invention includes a plurality of terminals connected to the electric wire, a housing that stores the terminals, and a soft seal material that waterproofs the plurality of terminals stored in the housing. In the waterproof connector that is improved in waterproofness when the sealing material is pressurized, the housing includes a plurality of terminal storage chambers that individually store the plurality of terminals, and a longitudinal direction of the plurality of terminal storage chambers. A sealing material storage chamber that is coaxially arranged in the axial direction of the housing and that stores the sealing material, and the sealing material stored in the sealing material storage chamber is placed in the sealing material storage chamber in the axial direction. A sealing material compression member that compresses the surface is provided on the terminal storage chamber side, and the sealing material compression member is provided coaxially and in the same number as the plurality of terminal storage chambers. A terminal guide hole for guiding the plurality of terminals to the terminal storage chamber is formed, and the sealing material compression member is a predetermined position before compression in which the sealing material is not yet compressed in the sealing material storage chamber. When the sealing material compression member is in the temporary holding position, the terminal is inserted into the terminal from the terminal guide hole of the sealing material compression member. After the terminal guided to the storage chamber is passed through the seal material, the terminal is stored in the terminal storage chamber, and the seal material compression member is moved to the main distillation position in the stored state. And

  According to the present invention, in the sealing material storage chamber, the soft sealing material stored in the sealing material storage chamber is compressed to the side of the terminal storage chamber in the axial direction. It is compressed so as to be crushed uniformly and entirely in a plane. In the compression, the sealing material compression member moves from the temporary holding position, which is a predetermined position before compression, where the sealing material has not yet been compressed, to the final holding position after compression.

  When the sealing material compression member is in the final position, the sealing material is compressed and thus in a high density state, whereas when the sealing material compression member is in the temporary position, the sealing material is not compressed. So it is in a low density state.

  When in the low density state, the terminal passes through the terminal guide hole of the sealing material compression member and then passes through the sealing material stored in the sealing material storage chamber and is stored in the terminal storage chamber. The amount of the sealing material scraped to the terminal due to the terminal penetrating the sealing material is smaller than the amount of the sealing material scraped to the terminal when the terminal penetrates the sealing material in a high density state. . If there is little sealing material to be scraped off, it is difficult to cause poor connection.

  After the terminal is stored in the seal material storage chamber, the seal material is densified if the seal material compression member is moved to the final position, and among the electric wires connected to the terminal, the electric wire located in the seal material Of course, the degree of adhesion with the sealing material also increases. In addition, since the sealing material compressing member compresses the sealing material to the side of the terminal storage chamber in the axial direction as described above, the sealing material is uniformly and axially crushed in the axial direction. Compressed.

  Therefore, the sealing material comes into close contact with the wall surface of the sealing material storage chamber in an even and uniform manner. For this reason, even if a plurality of terminals having different sizes and shapes are applied, high waterproofness can be ensured.

And since a sealing material comes to contact | adhere uniformly also to an electric wire and a sealing material comes to contact | adhere uniformly also to the wall surface of a sealing material storage chamber, the outstanding waterproofness can be exhibited.
Each component of the waterproof connector is such that the compressibility of the seal material when the seal material compression member is in the final position is such that the waterproof property after passing the terminal through the seal material is 50 kpa or more. Is formed.

  Moreover, each component is formed so that waterproofness will be 50 kpa or more when a compression rate is set to the range of 55 to 75%. And when the compression ratio of the sealing material is in the range of 55 to 75%, in the state where the sealing material is not compressed, not only is the terminal easily inserted into the sealing material, but also the amount of the sealing material scraped off by the terminal is compared. Therefore, contact resistance between the waterproof connector and the mating connector is not lowered.

  DESCRIPTION OF EMBODIMENTS Embodiments of the waterproof connector of the present invention (hereinafter referred to as embodiments) will be described with reference to the accompanying drawings.

  FIG. 1 is an overall exploded perspective view of the waterproof connector 1, and FIG. 2 is an overall perspective view of the assembled waterproof connector 1.

  The waterproof connector 1 includes a housing 3 that is long in the vertical direction (hereinafter referred to as an axial direction) in FIG. 1 and a plurality of terminals that are housed in the housing 3 in the axial direction, and that have different sizes and shapes. 7a and a signal transmission terminal 7b, a silicon gel 9 as a soft seal material for waterproofing the terminals 7a and 7b housed in the housing 3, and a seal material compression member for compressing the silicon gel 9 in the axial direction 10 and.

  And the waterproofness is improved by pressurizing the silicon gel 9 by the sealing material compression member 10. The electric wire 5 connected to the power supply terminal 7a and the electric wire 5 connected to the signal transmission terminal 7b are pvc electric wires (hereinafter referred to as electric wires) whose covering material is made of vinyl chloride resin. The power supply terminal 7a and the signal transmission terminal 7b are collectively referred to as a terminal 7.

  As can be seen from FIGS. 1 and 3, the overall shape of the housing 3 is substantially a rectangular parallelepiped shape, but the waistline makes one turn even if the upper part 3 </ b> U is shorter than the lower part 3 </ b> D in the axial direction. It has a large head shape. The lower portion 3D and the upper portion 3U are adjacent to each other in the axial direction (longitudinal direction) of the housing 3. The housing 3 is referred to as a top housing in this specification.

  In the lower part 3D, a terminal storage chamber 13 for storing the plurality of terminals 7a and 7b individually is formed in a parallel state. The power supply terminal 7a is somewhat larger than the signal transmission terminal 7b.

  The terminal storage chamber 13 is formed at the distal end portion of the terminal storage chamber 13 and is a portion where the terminal 7 is installed. The terminal storage chamber 13 is a portion that is continuous with the terminal installation portion 13a and extends in the axial direction. It consists of the electric wire front-end | tip part storage chamber 13b in which the front-end | tip part 5a is accommodated.

The terminal installation portion 13a is formed in accordance with the shape and size of the terminal so that the power supply terminal 7a and the signal transmission terminal 7b can be better accommodated.
The electric wire tip storage chamber 13 b is a cylindrical through hole that is somewhat larger in diameter than the electric wire 5.

The upper portion 3U has a sealing material storage chamber 14 in which a silicon gel 9 as a sealing material is stored. A pair of side surfaces facing each other on the outer surface of the upper portion 3U are provided with a rotation shaft 16 and a rotation arm 18 that rotates clockwise or counterclockwise about the rotation shaft 16 as a rotation center. Yes.

  The sealing material storage chamber 14 has a hollow rectangular parallelepiped shape opening upward, and the silicon gel 9 is spread on the bottom plate portion 14a. In the sealing material storage chamber 14, a sealing material compression member 10 for compressing the silicon gel 9 stored therein in the axial direction is installed so as to be slidable in the axial direction.

 The silicon gel 9 conforms to the shape of the bottom plate portion 14 a of the seal material storage chamber 14, and the silicon gel 9 is almost half of the seal material compression member 10 in a state where no external force is applied to the silicon gel 9. It has a flat rectangular parallelepiped shape with thickness. A surface of the silicon gel 9 that comes into contact with the bottom plate portion 14a of the sealing material storage chamber 14 is referred to as a gel bottom surface 9d.

  The sealing material compression member 10 is formed with a plurality of terminal guide holes 24 that are coaxial and the same number as the terminal storage chamber 13. The terminal guide hole 24 is for guiding the terminal 7 into the top housing 3 through the sealing material compression member 10, and is formed according to the shape and size of the power supply terminal 7a and the signal transmission terminal 7b. Has been.

  The sealing material compression member 10 is a moving member that moves in the axial direction from a temporary holding position, which is a predetermined position before compression, where the silicon gel 9 has not yet been compressed, to a main distillation position, where the silicon gel 9 has been compressed. In this specification, it is hereinafter referred to as a rear seal cover.

  The rotating arm 18 is used for completely fitting with a small force when mating with a mating connector (not shown).

  Further, among the peripheral surfaces of the upper portion 3U, another pair of opposing surfaces that are orthogonal to the surface on which the rotation shaft 16 is formed have a temporary retaining locking hole 19a and a final retaining locking hole 19b. They are formed in parallel with a gap in the axial direction (see FIGS. 1 and 2). The temporary retaining locking hole 19a and the final retaining locking hole 19b will be described later.

  As can be seen from FIGS. 1 and 3, the rear seal cover 10 has a flat rectangular parallelepiped shape like the silicon gel 9. In addition, locking projections 22 are provided on a pair of opposing side surfaces of the rear seal cover 10 (see FIGS. 1 and 7). The locking protrusion 22 is a protrusion for stopping the rear seal cover 10 at the temporary holding position and the main holding position.

  Then, after putting the silicon gel 9 into the sealing material storage chamber 14, the rear seal cover 10 is temporarily fastened as the front end surface 10a comes into contact with the upper surface 9u of the silicon gel 9 (see FIG. 7A). When provisional fastening is performed, the latching protrusion 22 comes into engagement with a temporary retaining latching hole 19 a formed in the upper portion 3 U of the top housing 3.

  The rear seal cover 10 is said to be in the temporary holding position when the locking projection 22 is engaged with the temporary locking locking hole 19a with the silicon gel 9 in the sealing material storage chamber 14. When the rear seal cover 10 is in the temporary holding position, the depth dimension of the seal material storage chamber 14, the rear seal cover 10, and the silicon so that a fine gap s is formed between the rear seal cover 10 and the silicon gel 9. The thickness dimension of the gel 9, the location where the locking projection 22 is formed in the rear seal cover 10, and the location where the temporary retaining locking hole 19 a is formed in the sealing material storage chamber 14 are defined. Therefore, the silicon gel 9 is not pressurized due to the gap s.

The main fastening position means that when the operator further presses the rear seal cover 10 in the temporary holding position in the axial direction, the engagement of the locking projection 22 with the temporary locking locking hole 19a is released, and the locking projection 22 Is the position of the rear seal cover 10 when it is engaged with the main retaining locking hole 19b formed in the upper portion 3U and located immediately below the temporary retaining locking hole 19a, like the temporary retaining locking hole 19a.

  The silicon gel 9 is pressurized when the rear seal cover 10 is in the final position. When the rear seal cover 10 is placed at the main fastening position, the rear seal cover 10 not only fills the gap s between the silicon gel 9 but also abuts against the upper surface of the silicon gel 9, and further moves the silicon gel 9 downward in the axial direction. Compress the surface.

  Then, the depth dimension of the sealing material storage chamber 14, the rear seal cover 10 and the silicon gel 9 are adjusted so that the compression rate of the silicon gel 9 at that time is in the range of 55 to 75% (preferably in the range of 60 to 70%). , The formation location of the locking protrusion 22 in the rear seal cover 10 and the formation location of the temporary retention locking hole 19a in the sealing material storage chamber 14 are defined. Further, when the compression rate is set in a range of 55 to 75%, each component is formed so that waterproofness is 50 kpa or more.

  The compression rate can be obtained by (Expression 1). Please refer to FIG. 7 for the explanation of (Formula 1).

Compression rate = (H-h) / H (1 set)
However, H: Thickness dimension of the silicon gel 9 when it is in an uncompressed state h: Thickness dimension of the silicon gel 9 when it is in a fully-fastened state, obtained by ab
It is.
a: Front end surface of the rear seal cover 10 when the rear seal cover 10 is in the temporary holding position
(Bottom) Distance between the bottom surface 10a and the bottom surface 9d of the silicon gel b: The amount of movement of the rear seal cover 10 from the temporary stop position to the main stop position,
Sum of crushing cost of congel 9 and gap s

Next, an assembling procedure of the waterproof connector 1 having such a configuration will be described.
(1) Attach the waterproof connector 1 to the press-fitting jig.

  (2) The silicon gel 9 is put through the opening of the sealing material storage chamber 14 in the upper portion 3U of the top housing 3 and the silicon gel 9 is spread in the sealing material storage chamber 14 (see FIG. 1).

  (3) The rear seal cover 10 is applied to the opening of the sealing material storage chamber 14 in which the silicon gel 9 is spread, and the rear seal cover 10 is pushed into the temporary holding position (see FIGS. 2 and 3).

  (4) The terminal 7 connected to the electric wire 5 is inserted into the terminal guide hole 24 (see FIG. 4), and the terminal 7 is passed through the silicon gel 9 (see FIG. 5). By the penetration, the terminal 7 is accommodated in the terminal installation portion 13a of the terminal storage chamber 13, and the distal end portion 5a of the electric wire 5 is accommodated in the electric wire distal end storage chamber 13b of the terminal storage chamber 13 (FIGS. 4 to 5). 6).

  (5) Push the rear seal cover 10 to the final position (see FIG. 6).

  (6) Remove the waterproof connector 1 from the press-fitting jig.

Next, the function and effect of the waterproof connector 1 will be described.
In the waterproof connector 1, when the silicon gel 9, which is a soft seal material stored in the seal material storage chamber 14, is compressed in the seal material storage chamber 14, the silicon gel 9 is uniformly distributed in the axial direction of the top housing 3. And the whole is compressed so that it may be crushed planarly. In the compression, the rear seal cover 10 can be moved from the temporary holding position where the silicon gel 9 has not yet been compressed to the final holding position where the compression has been completed.

  When the rear seal cover 10 is in the final position, the silicon gel 9 is compressed and is in a high density state, whereas when the rear seal cover 10 is in the temporary position, the silicon gel 9 is not compressed and has a low density. Is in a state of When the terminal 7 is in the low density state, the terminal 7 passes through the terminal guide hole 24 of the rear seal cover 10 and then passes through the silicon gel 9 stored in the sealing material storage chamber 14 so as to pass through the terminal storage chamber 13. Since it is housed in the terminal installation part 13a, the amount of scraping of the silicon gel 9 by the terminal 7 due to the terminal 7 penetrating the silicon gel 9 is the amount of scraping when the terminal 7 penetrates the high-density silicon gel 9 Less than If the silicon gel 9 to be scraped off is small, it is difficult to cause poor connection.

  After the terminal 7 is stored in the seal material storage chamber 14, the rear seal cover 10 is moved between the bottom plate portion 14 a and the rear seal cover 10 in the seal material storage chamber 14 by moving the rear seal cover 10 to the main distillation position. The silicon gel 9 is densified between the tip surface 10 a and the degree of contact between the electric wire 5 located in the silicon gel 9 and the silicon gel 9 among the electric wires 5 connected to the terminals 7 is naturally increased.

  In addition, since the silicon gel 9 is compressed to the side of the terminal storage chamber 13 in the axial direction between the front end surface 10a of the rear seal cover 10 and the bottom plate portion 14a of the sealing material storage chamber 14, the silicon gel 9 is uniformly and wholly Is compressed so as to be crushed flatly, and the silicon gel 9 comes into close contact with the wall surface of the sealant storage chamber 14 evenly without any unevenness.

  Then, the silicon gel 9 comes into close contact with the electric wire 5 evenly, and the silicon gel 9 comes into close contact with the wall surface of the sealing material storage chamber 14 evenly. For this reason, in the waterproof connector 1, high waterproofness can be ensured even if the power supply terminal 7a and the signal transmission terminal 7b having different sizes and shapes are used.

  It should be noted that when the compression ratio of the silicon gel 9 when the rear seal cover 10 is at the main end position is set in the range of 55 to 75 percent, preferably in the range of 60 to 70 percent, effective waterproof performance can be exhibited. This will be described with reference to the graph.

  The graph of FIG. 8 is a waterproof comparison graph for comparing the waterproof properties of the waterproof connector according to this embodiment and the conventional waterproof connector. In the waterproof comparison graph, the vertical axis indicates the waterproof property in the top housing 3 and the horizontal axis indicates the crushing allowance of the silicon gel 9 and the compression rate at that time.

  In the waterproof performance test, after inserting and removing the terminal 7 twice from the terminal storage chamber 302 of the waterproof connector 1, the terminal 7 is inserted into the terminal storage chamber 302 again, and then heated to 120 ° C. in a dedicated oven (not shown). Keep it warm for a while.

  A broken line drawn in the center of the graph indicates a reference value and is referred to as a reference line. Being higher than the reference line is a necessary condition for effectively ensuring waterproofness.

  In creating the graph line, test bodies are prepared for different conditions in order to observe waterproofness (for example, five waterproof connectors 1 having different crushing margins are prepared), and the waterproof performance is measured for each waterproof connector. A black square indicates a graph line of the waterproof connector 1 according to the present invention, and a black diamond indicates a graph line of a conventional waterproof connector.

Both have a shape similar to the candlestick on the stock chart. The upper and lower ends of the graph lines are max. Values when the waterproof property of the waterproof connector under a certain condition is measured a plurality of times. And min. The central square or diamond indicates the average value of the measured values. This graph shows the waterproofness of the waterproof connectors (i) to (e) with different crushing charges. For the waterproof connector (I), the crushing cost is the same as the conventional waterproof connector (I ').

  As for the waterproof connector (A) and the conventional waterproof connector (A '), the average value is below the reference line. In addition, the average values of the waterproof connectors (b) to (e) are equal to or higher than the reference line. Of these, the waterproof connectors (c) to (e) have a compression rate in the range of 55 to 75 percent, indicating that they have a stable waterproof property.

  When the compression ratio of the sealing material is in the range of 55 to 75%, not only the terminal is easily inserted into the sealing material but also the amount of the sealing material scraped off by the terminal is relatively small when the sealing material is not compressed. Therefore, the deterioration of the waterproof property and the contact reliability between the waterproof connector and the counterpart connector are not deteriorated.

  The design range means that the compression rate is set to a range of 60 to 70%. In addition, in the pvc electric wire, the plasticizer is released to the surroundings by heat, and as a result, the electric wire film tends to be thinned. Various conditions necessary for the design of the waterproof connector can be satisfied in a state in which the deterioration of the property is suitably suppressed.

  In addition, the present invention is not limited to the illustrated examples described above, and various changes can be made without departing from the scope of the present invention.

  For example, in the above-described embodiment, waterproof connectors having different sizes and shapes are shown, but the present invention can also be applied to terminals having different sizes and shapes.

1 is an overall exploded perspective view of a waterproof connector according to the present invention. It is a whole perspective view in the state where the waterproof connector concerning the present invention was assembled. It is the III-III sectional view taken on the line of FIG. It is a figure which shows the state which has inserted the terminal in the waterproof connector of the state of FIG. It is a figure which shows the state which tries to press-fit a rear seal cover, after inserting a terminal into a waterproof connector. FIG. 6 is a diagram showing a state where the press-fit of the rear seal cover is completed from the state of FIG. 5. It is a figure which shows typically the state by which the silicon gel is compressed, (a) shows the state before compression, (b) is a figure which shows the state after compression. It is a waterproof comparison graph which shows the waterproof performance of the waterproof connector which concerns on this invention. FIG. 9 (a) is a longitudinal sectional view before inserting the terminal into the housing, FIG. 9 (b) is a front view of the gel, and FIG. It is a longitudinal cross-sectional view after inserting a terminal in a housing. It is a figure which shows the problem of a prior art, and is a perspective view which shows the state which formed the terminal penetration hole so that a terminal might not be hooked on a gel. It is a figure which shows the problem of a prior art, FIG. 11 (a) is a state before approaching a pressurization member, FIG.11 (b) is a figure which shows the state after approaching a pressurization member. .

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Waterproof connector 3 Top housing 3D Lower part 3U Upper part 5 Pvc electric wire 5a Tip part 7a Power supply terminal 7b Signal transmission terminal 7 Collective name of terminal 9 Silicon gel (soft sealing material)
9u Gel upper surface 9d Gel bottom surface 10 Sealing material compression member (Rear seal cover)
10a Front end surface of rear seal cover 13 Terminal storage chamber 13a Terminal installation portion 13b Electric wire front end storage chamber 14 Seal material storage chamber 14a Bottom plate portion 16 Rotating shaft 18 Rotating arm 19a Temporary retention locking hole 19b Main retention locking hole 22 Locking projection 24 Terminal guide hole 29 Pressure member 301 Waterproof connector 302 Terminal storage chamber 302a Opening 303 Housing 303a Terminal guide port 304 Electric wire 305 Terminal 306 Gel 307 Gel fixing member 308 Slit 316 Terminal insertion hole s Rear seal cover and silicon gel Gap between

Claims (4)

A plurality of terminals 7 connected to the electric wire 5;
A housing 3 for housing the terminal 7;
In the waterproof connector 1 having a soft sealing material 9 for waterproofing the plurality of terminals 7 accommodated in the housing 3, and the waterproofness is enhanced by pressurizing the sealing material 9;
The housing 3 is arranged coaxially in the axial direction of the housing 3, which is the longitudinal direction of the plurality of terminal storage chambers 13 that individually store the plurality of terminals 7, and the plurality of terminal storage chambers 13, and the sealing material 9. Has a sealant storage chamber 14 in which is stored,
The sealing material storage chamber 10 is provided with a sealing material compression member 10 that compresses the sealing material 9 stored in the sealing material storage chamber 14 to the terminal storage chamber 13 in the axial direction.
The sealing material compression member 10 is provided with the same number and the same number as the plurality of terminal storage chambers 13, and terminal guide holes 24 for guiding the plurality of terminals 7 to the terminal storage chamber 13 are formed.
The sealing material compressing member 10 is a main stop that is a position in the sealing material storage chamber 14 where compression of the sealing material 9 is completed from a temporary holding position, which is a predetermined position before compression, where the sealing material 9 has not yet been compressed. Formed to move to a position,
After the sealing material compression member 10 is in the temporary holding position, the terminal 7 guided to the terminal storage chamber 13 from the terminal guide hole 24 of the sealing material compression member 10 is passed through the sealing material 9. The waterproof connector 1 is characterized in that the terminal 7 is housed in the terminal housing chamber 13 and the sealing material compression member 10 is moved to the final position in the housed state.   The compression rate of the sealing material 9 when the sealing material compression member 10 is in the final position is a waterproof connector so that the waterproof property after passing the terminal 7 through the sealing material 9 is 50 kpa or more. The waterproof connector according to claim 1, wherein each component of 1 is formed.   3. The waterproof connector according to claim 2, wherein each component is formed so that the compressibility of the sealing material 9 is in a range of 55 to 75 percent or in a range of 60 to 70 percent.   The terminal 7 includes a power supply terminal 7a and a signal transmission terminal 7b having different sizes. The terminal storage chamber 13 of the housing 3 and the terminal guide of the sealing material compression member 10 through which the terminal 7 is passed. The waterproof connector according to claim 1, wherein the shape and size of the hole 24 are formed in accordance with the terminal 7.

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