JP5242311B2 - Seal insertion method and apparatus - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seal insertion method and apparatus, for example, a method for inserting a seal for securing waterproofness inside a connector housing and a seal insertion apparatus in a waterproof connector for connecting a wire harness for an automobile. About.

Conventionally, as shown in FIG. 20, an annular seal 42 having a pair of drop prevention protrusions 41, 41 (sometimes referred to as ears) is inserted (pushed) into the inside 43A of the connector housing 43 by a pusher 44. However, it is not easy to lock the protrusions 41 and 41 in the locking holes 45 and 45 of the housing 43.
That is, in the inside 43A of the connector 43, there is a stepped portion 47 on the inner side surface 46 through which the projections 41, 41 of the seal 42 pass during insertion, and the projection 41 of the seal 42 is formed as shown in FIG. It is difficult to insert by being caught by the stepped portion 47, and the projection 41 is damaged by the stepped portion 47, and it may be cut and separated. Further, as shown in FIGS. 20B to 20C, it is extremely difficult to insert the seal 42 by one pushing operation, and it is necessary to repeat the pushing operation a plurality of times.
Therefore, the work efficiency is poor, the burden on the worker is large, and there is a risk that defective products may be generated due to the above-mentioned damage of the protrusion 41.

Conventionally, in order to solve such problems, a part of the wall of the connector housing itself has a shape and structure that can be elastically expanded and deformed, and an insertion jig is used to expand the housing while inserting a seal. A method has been proposed. (For example, refer to Patent Document 1.)
Japanese Patent No. 3685342

However, the shape and structure of the connector housing is complicated, and the injection mold is complicated, which is not suitable for high-mix and low-volume production.
Therefore, the present invention allows the connector housing itself to be easily and quickly inserted in one push-in operation while the connector housing itself remains in a simple shape and structure and is kept in a compact size. It is an object of the present invention to provide a seal insertion method and an insertion device capable of smoothly locking a protrusion to a locking hole of a housing without the prevention protrusion being cut (damaged).

In order to achieve the above object, a seal insertion method according to the present invention includes inserting an annular seal in which a pair of dropout prevention protrusions are integrally formed from an annular seal body into a connector housing, and inserting the protrusions into the connector housing. In the seal insertion method of engaging with the engaging female portion of the connector housing, a first step of inserting the annular seal body to the back of the connector housing with a first insertion jig, and a second insertion jig A second step of pushing the projection into correspondence with the locking female portion, and a third step of pushing the projection outward to the side by a third insertion jig and locking the projection to the locking female portion; Is provided.
In addition, the first insertion jig, the second insertion jig, and the third insertion jig can be inserted into the connector housing as an integrated insertion head unit, and the first, second, and third processes are performed. In this method, the steps are sequentially performed.
Further, a chamfer is formed on the inner peripheral surface side of the annular seal body corresponding to the protrusion to allow the protrusion to bend elastically toward the opening side of the connector housing. In this method, the protrusion is elastically bent and deformed toward the opening while reducing the gap with the first insertion jig formed by chamfering.

In the seal insertion device according to the present invention, an annular seal formed by integrally projecting a pair of drop-out prevention projections from the annular seal body is inserted into the connector housing, and the projections are engaged with the connector housing. In a seal insertion device to be engaged with a female stop portion, a first insertion jig for inserting the annular seal to the back of the connector housing by attaching the annular seal to an outer fitting shape, and the first insertion A second insertion jig which restores the raised state while pressing the projection of the annular seal inserted into the connector housing up to the back part of the connector housing in a standing state while pressing the protrusion to the back, and the locking female part; A third insertion jig that pushes and expands the corresponding portion of the inner peripheral surface of the annular seal body corresponding to the protrusion outward to the locking female portion.
Also, an insertion head unit is configured by arranging a third insertion jig and a second insertion jig on the corresponding two side surfaces of the first insertion jig so as to be relatively slidable in the insertion direction and the anti-insertion direction. It is a thing.
Moreover, the said 3rd insertion jig | tool has the press inclined surface which faces a side outward at the front-end | tip or a linear form.

The present invention has the following remarkable effects.
The insertion of the seal into the housing and the locking of the protrusion can be performed easily and reliably by a single pushing operation. In particular, a small protrusion can be engaged with the locking female portion of the housing by a delicate pushing operation.
In addition, it is not necessary to add a special shape / structure change to the connector itself.

Hereinafter, the present invention will be described in detail based on the illustrated embodiment.
12 to 19 are diagrams showing an embodiment of a seal insertion device according to the present invention. FIGS. 5 to 11 illustrate the operation of the device and the embodiment of the seal insertion method according to the present invention. It is a figure to do. 1 and 2 show an example of the seal S, and FIGS. 3 and 4 show an example of the connector housing.

  First, in FIG. 1 to FIG. 4, the seal S and the connector housing H will be described. The seal S is made of an elastic material such as rubber, and has a substantially oval or substantially rectangular (closed) ring shape as a whole. An annular seal body 7 and a pair of drop-off preventing projections 2 and 2 formed integrally with the annular seal body 7 so as to protrude. The housing H shows a male type in which two metal terminals 30, 30 project from the inside 3. The housing H is made of an insulating material, and has, for example, a female connector housing space having an oblong (or substantially rectangular) cross section. The portion 3 </ b> A is surrounded by a short cylindrical surrounding wall portion 4 and an axially orthogonal bottom wall portion 5. Then, in the vicinity of the bottom wall portion 5 --- the back portion of the storage space portion 3A--the locking wall portions 4 are formed with locking female portions 6, 6. The seal S is inserted into the interior 3 of the connector housing H, and the pair of drop-off preventing protrusions 2 and 2 of the seal S are engaged with the engaging female portions 6 and 6.

More specifically, the seal S is composed of an oval or substantially rectangular annular seal body 7 (having rounded corners) and a pair of protrusions integrally formed so as to protrude from the short sides 9 and 9 thereof. 2 and 2. Thus, the pair of protrusions 2 and 2 have 180 ° symmetrical positions.
1A is a sectional front view of the seal S, FIG. 1B is a front view, FIG. 1C is a bottom view, FIG. 2A is a sectional side view, and FIG. 2B is a side view. The annular seal body 7 is provided with a notch 51 on the long side 8 side, thereby forming drooping piece parts 52, 52 on the short side 9 side. A drop-off preventing projection 2 is projected from the outer surface of each hanging piece 52 in a horizontal manner.
Further, a chamfer 53 is formed on the inner surface side of the hanging piece 52. A plurality of (three in the illustrated example) seal protrusions 55 are provided on the inner surface of the hole 54 of the annular seal body 7, and a plurality of (three in the illustrated example) seal protrusions are provided on the outer peripheral surface. 56 is protruding. The chamfer 53 is formed in an inclined line shape, and the chamfer 53 is formed in an axial direction dimension substantially equal to the axial direction depth dimension A _{51 of} the notch 51.

As the engaging female portion 6 on the inner surface of the surrounding wall portion 4 of the connector housing H, the shape of the engaging hole 45 as shown in FIG. In the embodiment of the present invention, a guide groove 57 having a width dimension slightly larger than the width dimension W ₂ (see FIG. 1) of the protrusion 2 of the seal S is formed on the left inner surface, and the depth of the guide groove 57 is increased. The locking small protruding piece 58 is disposed on the upper protruding portion 58, and the upper side 58B of the small protruding piece 58 is defined as one locking female portion 6. Further, the small projecting piece 58 has an unequal side trapezoidal shape, has a guiding gradient 58A on the opening P side, and the upper side 58B forms a locking female portion 6 in the direction perpendicular to the axis, and is inserted from the opening P side. The protrusion 2 of S is guided and guided so as to easily get over while being elastically bent by the gradient 58A, and the protrusion 2 is locked to the upper side 58B (locking female portion 6) to prevent it from coming off (preventing falling off). The

Further, the vertical groove 59 of the other (FIG. 3 (A) and the right side of FIG. 4) on the inner surface of the seal S of protrusions 2 having a width dimension W ₂ (see FIG. 1) large width dimension W ₅₉ than The locking protrusion 60 is formed at the center of the longitudinal groove 59 in the width direction, and the upper end surface of the locking protrusion 60 is used as the locking female portion 6. The protrusion 2 of the seal S bends elastically as soon as it is inserted from the opening P of the housing H, and the protrusion 2 is locked to the locking female portion 6 at the back while slidingly contacting the locking protrusion 60. This prevents it from coming off (prevents falling off).
Then, the confirmation windows 61, 61 that can be seen from the upper side of FIG. 3 (A) as to whether or not the seal S is inserted into the housing H and the protrusion 2 is locked to the locking female portion 6 are It is opened in parallel to the heart L and in the direction opposite to the opening P.
In addition to making the engaging female portions 6 and 6 different from each other as shown in FIGS. 3 and 4, it is also free to form the same left and right as illustrated in FIGS.

  Hereinafter, the seal insertion method according to the present invention will be described. The seal S is attached and held on the first insertion jig 11 shown in FIGS. The first insertion jig 11 includes an insertion part 14 having a length approximately equal to the thickness dimension Ts of the seal S and a body part 16 provided continuously through a stepped part 15.

  Although FIG. 5 shows the case where the seal S is fitted in the direction of the arrow C, conversely, the first insertion jig 11 may be inserted into the seal S in the direction opposite to the arrow C. In the state where the lower end (tip) of the hanging piece 52 of the seal S is in contact with the stepped portion 15 as shown in FIG. 6, in the direction of arrow E, up to the inner portion 62 of the housing space 3A of the connector housing H, The annular seal body 7 is inserted. This is called the first step (see FIG. 7), that is, the tip surface 14A of the insertion portion 14 of the first insertion jig 11 is inserted until it contacts the bottom wall portion 5, and the seal body 7 of the seal S is , And press-contact with the bottom wall portion 5. At this time, the protrusions 2 and 2 are elastically bent. That is, the protrusion 2 is elastically bent and deformed toward the opening P side of the housing H without being able to get over the small protruding piece 58.

  Next, as shown in FIGS. 8 and 9, by operating the second insertion jig 12 as shown by the arrow F, the projection 2 is pushed in, and the projection 2 gets over the small projecting piece 58, and the engagement is continued. Corresponding to the stop female portion 6. At this time, as shown in FIG. 9, the protrusion 2 is often caught on a part of the inner surface of the housing H, and the protrusions 2 and 2 are not sufficiently expanded (as shown in FIG. 9). In this way, as shown in FIGS. 8 to 9, only the projections 2 and 2 are pushed inward by the second insertion jig 12, and the deformed state is brought into the axial center L direction of the locking female portions 6 and 6. The protrusions 2 and 2 are made to correspond. This is called the second step.

  Next, the third insertion jig 13 is operated as shown by an arrow G. The distal end of the third insertion jig 13 has a pressing inclined surface 20 facing outward in a round shape (or a straight line not shown). The third insertion jig 13 pushes and expands the protrusion 2 to the side outward J, and the protrusions 2 and 2 are locked to the locking female portions 6 and 6. This is called the third step. As described in FIGS. 1 and 2, in the seal S, a chamfer 53 is formed on the inner surface of the hanging piece portion 52 corresponding to the protrusion 2, and the third insertion jig 13 is formed on the chamfer 53. The pressing inclined surface 20 at the tip of the tip is applied in the direction of the arrow J while being in sliding contact, and is pressed in the direction in which the protrusions 2 and 2 are expanded, so that the protrusion is surely projected onto the locking female portion 6. 2 can be engaged.

In the embodiment of the present invention shown in FIGS. 1 to 10, the first insertion jig 11, the second insertion jigs 12 and 12, and the third insertion jigs 13 and 13 are assembled together. The insertion head unit U is inserted into the interior 3 of the housing H, and the first step, the second step, and the third step are sequentially performed in a very short time.
Then, another operation (function) of the chamfer 53 of the seal S will be described. In the first step, as shown in FIGS. 6 to 7, the protrusion 2 is elastic toward the opening P side of the connector housing H. It can be said that it has the function (function) to bend and deform. Further, the chamfer 53 forms a gap 17 having a triangular cross section as shown in FIG. 6 between the first insertion jig 11 and the insertion operation of the first insertion jig 11. As shown in FIG. 7, the protrusion 2 easily elastically bends toward the opening P while reducing (reducing) the triangular gap 17.

FIG. 11 shows the (elastic deformation) shape of the seal S in the first to third steps from FIG. 5 to FIG. 11A shows the free state of the seal S (see FIG. 5), FIG. 11B shows the state in which the projection 2 is elastically bent (see FIG. 7), and the vector F ₁₅ is the first The external force from the stepped portion 15 of the insertion jig 11 is indicated, and F ₅₈ indicates the external force received from the small protruding piece portion 58. Next, FIG. 11C is a diagram corresponding to FIG. 9, and F ₁₂ indicates an external force applied to the protrusion 2 from the second insertion jig 12. Next, FIG. 11D is a view corresponding to FIG. 10, and F ₁₃ indicates an external force applied to the chamfer 53 of the seal S from the pressing inclined surface 20 of the third insertion jig 13. 2 moves in the direction of arrow J.

  Next, FIGS. 12 to 16 show an embodiment of a seal insertion device suitable for the above-described seal insertion method, and FIGS. 17 to 19 are diagrams for explaining the operation of the seal insertion device. FIG.

  The seal insertion device according to the present invention includes a base plate 18, an intermediate plate 19, and an upper plate 21, as shown in FIGS. The intermediate plate 19 and the upper plate 21 are guided up and down (reciprocated) by the linear guide means M so as to be able to approach and separate a predetermined dimension (in the vertical direction) while maintaining parallel to the base plate 18. In addition, it has a bullet energizing means Q, and the intermediate plate 19 and the upper plate 21 are always elastically energized in the separating direction (upward) with respect to the base plate 18.

In the embodiment shown in FIG. 12, a linear bushing 24 with a flange is attached to each of the base plate 18 and the intermediate plate 19, and a linear shaft 23 having a top end (fixed) attached to the upper plate 21 is supported. The linear guide means M is configured to be inserted into each hole of the linear bush 24.
Reference numeral 22 denotes a stripper bolt having a head at the upper end and a lower end so that the elastic plate biasing means Q regulates the maximum separation (isolation) of the intermediate plate 19 from the base plate 18. Has a male screw, and is screwed into the screw hole of the base plate 18 to stand upright. Further, the bullet urging means Q will be described. In the embodiment shown in FIG. 12, the first spring 31 that urges and urges the base plate 18 and the intermediate plate 19 in the direction separating them from each other, the intermediate plate 19 and the upper plate 21. And a second spring 32 that urges and urges them in a direction to separate them from each other.
It should be noted that a switch 26 with a first stopper and a switch 27 with a second stopper are provided so that the stroke A ₁ of the intermediate plate 19 relative to the base plate 18 and the stroke A ₂ of the upper plate 21 relative to the intermediate plate 19 can be increased or decreased. It is regulated.

In the embodiment shown in FIG. 13, the linear guide means M includes a linear bush 24A and a linear shaft 23A, and a linear bush 24B and a linear shaft 23B, which are provided independently of the upper plate 21 and the intermediate plate 19, respectively. The linear shafts 23 </ b> A and 23 </ b> B are provided upright on the base plate 18. The bullet urging means Q is constituted by independent (coiled) springs 33 and 34 which are externally mounted on the linear shafts 23A and 23B. Further, the stopper 26A, 27A are in 17 to 19, drawn in a simplified manner, the intermediate plate 19 is held so as to be lowered by the stroke A _1, the upper plate 21 as a lowerable by the stroke A _2, is retained ing.

  In the seal insertion device according to the present invention, as already described with reference to FIGS. 5 to 7 and the like, the annular seal S is attached in an outer fitting shape, and the seal S is inserted to the inner portion 62 of the connector housing H. The first insertion jig 11 is provided, and is fixed to the upper surface of the upper plate 21 as shown in FIGS. 12 and 13 and FIGS. Reference numeral 35 denotes a positioning knock pin, and 49 denotes a mounting bolt. The upper plate 21 has a strip shape as shown in FIGS. 14, 12, and 3, the first insertion jig 11 has a stepped portion 15 (as already described in FIG. 6) and a lower trunk portion having a large cross-sectional shape. 16 and an insertion portion 14 having a small cross-sectional shape, and recessed grooves 36 are formed on the left and right side surfaces of the body portion 16 in the vertical direction.

Further, as shown in FIGS. 16, 12, 13 and 17 to 19, the second insertion jig 12 is fixed to the intermediate plate 19 via a fixing tool 28 (with bolts or the like). Moreover, the second insertion jig 12, the two halves 12A, is configured with a 12A, specifically, as shown in FIG. 16, a predetermined thickness T _12, for mounting bolts to the fastener 28 It has a boss part 29 having a hole and an insertion hook part 37 extending upward in a square hook shape, and a recess groove 38 for escaping is formed in the top and side outwards in an opening shape at the tip. . This concave groove 38 is for avoiding interference with the small projecting piece 58 of the housing H as shown in FIGS. 8 to 10, or as shown in FIG. In the case of the housing H in which the strip 60 is present, the escape groove 38 in FIG. 16 is sufficiently long in the vertical direction (not shown) to avoid interference with the locking projection 60.

An insertion collar portion 37 of the second insertion jig 12 is fixed to the intermediate plate 19 with a depth from the side slightly entering the left and right concave grooves 36 shown in FIG. 13 and FIGS. 8 and 9).
This second insertion jig 12 is an elastic bent projection 2, 2 of the annular seal S inserted from the first insertion jig 11 up to the inner portion 62 of the connector housing H as shown in FIGS. As shown in FIGS. 8 to 9, it is restored to the standing state while being pressed to the back, and is made to correspond to the locking female portions 6 and 6.

As shown in FIGS. 12, 13, 15, and 17 to 19, the third insertion jig 13 is fixed to the base plate 18 upright by a fixing tool 39, a bolt, and the like. As shown in FIG. 15, the third insertion jig 13 has a predetermined thickness T ₁₃ , and the boss portion 63 having a mounting bolt hole to the fixing tool 39 to the intermediate portion 64 are continuously the same. Although it is a band plate shape with a width dimension, it is formed in a rectangular shape from the tip by a notch 65 to form a pair of insertion collars 66, 66, each insertion collar 66 being a single character type cross-section band It has a plate shape, and has a rounded pressure inclined surface 20 in a round shape (or a straight line not shown) at the tip.

The insertion collar portion 66 of the third insertion jig 13 is inserted so as to come into contact with the inner bottom surface 36A of the concave groove 36 in FIG. Specifically, as shown in FIGS. 9, 10, and 13, an insertion flange portion is formed in a narrow vertical gap portion Y between the back bottom surface 36 </ b> A and the insertion flange portion 37 of the second insertion jig 12. 66 can be inserted so as to penetrate from below to above.
With this third insertion jig 13, the corresponding part of the inner peripheral surface of the seal body 7 corresponding to the protrusions 2, 2 of the seal S is expanded to the side outward J as shown in FIGS. 9 to 10. The protrusion 2 can be reliably locked to the locking female portions 6 and 6.

  8 to 10 and FIGS. 12 to 14 and FIGS. 17 to 19, third grooves are formed in the corresponding concave grooves 36 and 36 on the two side surfaces of the first insertion jig 11. The insertion jig 13 (the insertion collar part 66) and the second insertion jig 12 (the insertion collar part 37) are sequentially associated with each other in the insertion direction / anti-insertion direction from the inside to the outside. The insertion head unit U is configured so as to be slidable to the inside, and the distal end side of the insertion head unit U can be inserted into the interior 3 of the housing H integrally.

Next, the operation and action of the seal insertion device will be additionally described while comparing FIGS. 17 to 19 with FIGS. 5 to 10. In the standby state (non-use state) of FIG. 17, the intermediate plate 19 and the upper plate 21 are stopped at the highest position, and the first insertion jig 11 protrudes greatly upward. In this state of FIG. 17, the seal S is attached to the insertion portion 14 of the first insertion jig 11 as shown by the arrow C in FIG. As shown in FIG. 6, when the housing H is pushed downward until it abuts against the portion 15, the seal S is inserted to the inner portion 62 of the housing H as shown in FIG. . (In FIGS. 6 and 7, the first insertion jig 11 is drawn in the direction of arrow E with the housing H stationary for easy understanding.)
If the housing H is pushed further downward by manual operation (or automatic insertion means), the first insertion jig 11 and the upper plate 21 descend against the elastic force of the spring 33, and FIG. Then, the state shown in FIG. 9 is obtained. At this time, the state shown in FIG. 18 corresponds to FIG. (In FIG. 8, the housing H and the first insertion jig 11 are drawn stationary so that the second insertion jig 12 is inserted as indicated by the arrow F.)

In the state of FIG. 18 (FIG. 9), the upper plate 21 is lowered by the stroke A _{2 and} stopped by the stopper 27A. The second insertion jig 12 and the third insertion jig 13 are the housings for this stroke A _2. Inserted into H, the protrusions 2 and 2 are made to correspond to the positions (in the axial direction) of the locking female portions 6 and 6, as shown in FIG.
If the housing H is pushed further downward by manual (or automatic insertion means), the first insertion jig 11, the upper plate 21, the fixing tool 28, and the intermediate plate 19 resist the elastic force of the spring 34, 10 and 19, that is, a state in which the projections 2 and 2 are locked to the locking female portions 6 and 6. When changing from FIG. 18 to FIG. 19, in particular, the insertion collar portion 66 of the third insertion jig 13 enters in the direction of the inner portion 62 of the housing H. (In FIG. 10, for ease of understanding, the insertion collar portion 66 of the third insertion jig 13 is drawn in the direction of arrow G with the housing H stationary.)
Thereafter, if the housing H is pulled upward, the seal S is normally assembled and removed.
Also, in the embodiment shown in FIGS. 12 and 13, the operation is the same as in the case of FIGS.

  As described above, in FIGS. 12 to 19, the seal S and the housing H are mainly set manually, and the housing H is pushed down. In the present invention, in addition to this, the upper plate 21, the intermediate plate 19, the springs 31, 32, 33, 34, etc. are omitted, and the first insertion jig is applied by hydraulic pressure, pneumatic pressure, electromagnetic force, or the like. It is also preferable that the first insertion jig 12, the third insertion jig 12, and the third insertion jig 13 are sequentially operated so as to be linearly reciprocable. That is, it can also be applied to an automatic seal insertion machine.

  As can be seen from FIGS. 3 and 10, the housing H shown in the figure is provided with windows 61 and 61 for confirming whether or not the seal S is properly attached from the outside. There are advantages. The present invention is not limited to the illustrated housing H, and the shape thereof is freely deformable. In particular, the locking female portions 6 and 6 have locking holes 45 as shown in FIG. 20 (conventional example). The seal insertion device and the insertion method according to the present invention are suitable for such a locking hole 45 as well.

  In the present invention, as described above, the annular seal S in which the pair of drop prevention protrusions 2 and 2 are formed integrally with the annular seal body 7 so as to protrude is inserted into the interior 3 of the connector housing H, and the protrusions 2 and 2 are inserted. In the seal insertion method in which 2 is locked to the locking female portions 6 and 6 of the connector housing H; the annular seal body 7 is inserted into the inner portion 62 of the connector housing H by the first insertion jig 11. One step; a second step in which the projections 2 and 2 are pushed by the second insertion jig 12 to correspond to the locking female portions 6 and 6; And the third step of locking the protrusions 2 and 2 to the locking female portions 6 and 6; thus, the seal can be efficiently attached to the connector housing H by one pressing operation. . This reduces the burden on the operator. In addition, the small protrusions 2 and 2 can be easily adjusted to a delicate force and a delicate pushing position, and the protrusion 2 can be prevented from being damaged.

In addition, the first insertion jig 11, the second insertion jig 12, and the third insertion jig 13 can be inserted into the interior 3 of the connector housing H as an integral insertion head unit U, By sequentially performing the second step and the third step, the work is smooth and the work efficiency can be further improved.
Further, a chamfer 53 is formed on the inner peripheral surface side of the annular seal body 7 corresponding to the protrusion 2 so that the protrusion 2 allows elastic bending deformation toward the opening P side of the connector housing H. In the first step, the projection 2 is elastically bent toward the opening P side while reducing the gap 17 with the first insertion jig 11 formed by the chamfer 53, so that the projection 2 Easily deforms elastically and is not damaged. In addition, in the subsequent third step, when the tip of the third insertion jig 13 comes into contact, the projection 2 tends to receive a component force that smoothly expands in the lateral direction.

  Further, according to the present invention, an annular seal S in which a pair of drop-off preventing projections 2 and 2 are integrally formed from the annular seal body 7 is inserted into the interior 3 of the connector housing H, and the projections 2 and 2 are inserted. In the seal insertion device for engaging with the engaging female portions 6 and 6 of the connector housing H; the annular seal S is attached in an outer fitting shape, and the annular seal S is connected to the inner portion 62 of the connector housing H. A first insertion jig 11 to be inserted; and standing up while pressing the projections 2 and 2 of the annular seal S inserted into the inner portion 62 of the connector housing H by the first insertion jig 11 to the rear. A second insertion jig 12 which is restored to a state and corresponds to the locking female portions 6 and 6; a corresponding portion of the inner peripheral surface of the annular seal body 7 corresponding to the protrusions 2 and 2 is The protrusions 2 and 2 are engaged with the locking female portions 6 and 6 And the third insertion jig 13 to be stopped, so that it can be engaged with the locking female portions 6 and 6 reliably in a continuous and efficient manner in three steps without damaging the protrusions 2 and 2. The occurrence of defective products can be suppressed as low as possible.

Further, the third insertion jig 13 and the second insertion jig 12 are sequentially arranged on the two corresponding side surfaces of the first insertion jig 11 so as to be slidable relative to each other in the insertion direction and the anti-insertion direction. Since the unit U is configured, it can be applied to a small connector housing H, and the second and third insertion jigs 12 and 13 are reinforced by the first insertion jig 11, so that the durability is high. Is also excellent.
Further, since the third insertion jig 13 has a pressing inclined surface 20 facing the outer side at the tip in a round shape or a straight line shape, the protrusions 2 and 2 are delicately arranged on the outer side (lateral direction). The force can be pushed in so as to smoothly engage with the locking female portions 6 and 6.

It is a figure which shows an example of a seal | sticker, Comprising: (A) is a cross-sectional front view, (B) is a front view, (C) is a bottom view. It is a figure which shows an example of a seal | sticker, Comprising: (A) is a cross-sectional side view, (B) is a side view. It is a figure which shows a connector housing, Comprising: (A) is a cross-sectional front view, (B) is a cross-sectional side view. It is a bottom view which shows a connector housing. It is explanatory drawing which shows a seal | sticker insertion method. It is explanatory drawing which shows a seal | sticker insertion method. It is explanatory drawing which shows a seal | sticker insertion method. It is explanatory drawing which shows a seal | sticker insertion method. It is explanatory drawing which shows a seal | sticker insertion method. It is explanatory drawing which shows a seal | sticker insertion method. It is principal part sectional explanatory drawing for demonstrating the elastic deformation of a seal in order. It is a partial cross section front view which shows an example of implementation of a seal insertion apparatus. It is a partial cross section side view. It is a top view which shows an example of a 1st insertion jig. It is a figure which shows an example of a 3rd insertion jig, (A) is a front view, (B) is a side view. It is a figure which shows an example of the 2nd insertion jig | tool 12, (A) is a front view, (B) is a side view. It is a partial cross section front view of the unused state which shows other embodiment of a seal | sticker insertion apparatus. It is a partial cross section front view explaining the time of 2nd process completion. It is a partial cross section front view explaining the time of 3rd process completion. It is a figure for demonstrating the seal insertion method of a prior art example.

Explanation of symbols

2 Protrusion prevention 3 Internal 6 Locking female part 7 Annular seal body
11 First insertion jig
12 Second insertion jig
13 Third insertion jig
17 Air gap
20 Pressing inclined surface
53 Chamfer
62 Back H Connector housing J side outer side P opening S seal U insertion head unit

Claims (6)

An annular seal (S) in which a pair of drop-off prevention protrusions (2) and (2) are integrally projected from the annular seal body (7) is inserted into the interior (3) of the connector housing (H), and the above-mentioned In the seal insertion method of engaging the protrusions (2) and (2) with the engaging female portions (6) and (6) of the connector housing (H),
A first step of inserting the annular seal body (7) to the back part (62) of the connector housing (H) by a first insertion jig (11);
A second step of pressing the projections (2) (2) with the second insertion jig (12) to correspond to the locking female portions (6) (6);
A third insertion jig (13) pushes and expands the protrusion (2) laterally outward (J) to lock the protrusion (2) (2) to the locking female part (6) (6). 3 processes
A seal insertion method characterized by comprising:   The first insertion jig (11), the second insertion jig (12), and the third insertion jig (13) are integrally inserted into the inside (3) of the connector housing (H). The seal insertion method according to claim 1, wherein the first step, the second step, and the third step are sequentially performed in succession so that insertion is possible.   Corresponding to the protrusion (2), on the inner peripheral surface side of the annular seal body (7), the protrusion (2) allows elastic bending deformation toward the opening (P) side of the connector housing (H). Forming the chamfer (53), and reducing the gap (17) with the first insertion jig (11) formed by the chamfer (53) in the first step, the protrusion (2) The seal insertion method according to claim 1, wherein the seal is elastically bent and deformed toward the opening (P). An annular seal (S) in which a pair of drop-off prevention protrusions (2) and (2) are integrally projected from the annular seal body (7) is inserted into the interior (3) of the connector housing (H), and the above-mentioned In the seal insertion device for locking the protrusions (2) and (2) to the locking female portions (6) and (6) of the connector housing (H),
A first insertion jig (11) in which the annular seal (S) is attached in an outer fitting shape and the annular seal (S) is inserted to the back part (62) of the connector housing (H);
The first insertion jig (11) presses the protrusions (2) and (2) deformed elastically of the annular seal (S) inserted up to the back part (62) of the connector housing (H). A second insertion jig (12) which is restored to a standing state and corresponds to the locking female portion (6) (6);
The corresponding part of the inner peripheral surface of the annular seal body (7) corresponding to the protrusions (2) and (2) is expanded outward (J), and the protrusions (2) and (2) are locked. A third insertion jig (13) to be engaged with the female part (6) (6);
A seal insertion device comprising:   The third insertion jig (13) and the second insertion jig (12) are sequentially slidably arranged in the insertion direction and the anti-insertion direction on the two corresponding side surfaces of the first insertion jig (11). The seal insertion device according to claim 4, wherein the insertion head unit (U) is configured.   The seal insertion device according to claim 4 or 5, wherein the third insertion jig (13) has a pressure inclined surface (20) facing outward at the tip in a round shape or a straight shape.

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