JP2019174364A - Airtightness inspection device - Google Patents

Abstract

To provide an airtightness inspection device with which it is possible to improve workability when inspecting the airtightness of a waterproof type connector.SOLUTION: An airtightness inspection device 100 comprises: first and second sealing members 131, 132 for sealing a fifth and a sixth terminal hole 211e, 211f, respectively, out of first to sixth terminal holes 211a-211f; a first holding member 11 for holding a waterproof type connector 2; and a second holding member 12 for holding the first sealing member 131 at a position where the fifth terminal hole 211e in which the first sealing member 131 is inserted and the first sealing member 131 become coaxial, with respect to the waterproof type connector 2 that is held by the first holding member 11.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an airtightness inspection apparatus for inspecting airtightness of a waterproof connector, for example.

  Conventionally, a plate-shaped base, a connector holder that is fixed to the base and holds the waterproof connector in a sealed state, and is slidably supported with respect to the base so as to advance and retract toward the waterproof connector. There is known an air tightness inspection device including an opposing portion and an operation lever supported to be swingable with respect to a base (see, for example, Patent Document 1).

  Conventionally, a housing in which a plurality of terminal holes are formed, a waterproof plug arranged in a compressed state inside the housing to waterproof the inside of the housing, and a holder for holding the waterproof plug against the housing, A waterproof connector provided is known (for example, see Patent Document 2).

Japanese Unexamined Patent Publication No. 2017-45507 Japanese Patent Laid-Open No. 2003-22868

  When performing the airtightness inspection for the waterproof connector disclosed in Patent Document 1 with respect to the waterproof connector described in Patent Document 2, it is necessary to seal a plurality of terminal holes, respectively. There is a possibility of causing a decline in sex.

  Therefore, an object of the present invention is to provide an airtight inspection device capable of improving workability when inspecting the airtightness of a waterproof connector.

  In order to solve the above-mentioned problems, the present invention is an airtightness inspection device for inspecting the airtightness of a waterproof connector having a plurality of terminal holes, and is formed in a shaft shape that can be inserted into the terminal holes. Formed at least one sealing member for sealing any one of the plurality of terminal holes, a first holding member for holding the waterproof connector, and the first holding member. A second holding member for holding the sealing member at a position where the sealing member and the terminal hole into which the sealing member is inserted are coaxial with the waterproof connector, An airtightness inspection apparatus in which the sealing member can be attached to and detached from the terminal hole of the waterproof connector by the relative movement of the first holding member and the second holding member in the axial direction of the sealing member. provide.

  According to the airtightness inspection apparatus according to the present invention, it is possible to improve workability when inspecting the airtightness of the waterproof connector.

It is a top view which shows the structural example in the test | inspection of the airtight test | inspection apparatus which concerns on this Embodiment, (a) is a side view, (b) is a top view. It is a top view which shows the structural example in the non-inspection of an airtight inspection apparatus, (a) is a side view, (b) is a top view. It is a top view which shows the structural example of a waterproof connector, (a) is a top view, (b) is a side view, (c) is a rear view, (d) is a front view. It is the perspective view which showed the example of a structure of the several terminal hole and sealing member of a waterproof type connector. It is explanatory drawing which shows the example of the support structure of a waterproof connector, (a) is the state before attachment of a waterproof connector, (b) is the state after attachment of a waterproof connector. FIG. 6 is a cross-sectional view taken along line AA in FIG. (A) is a top view which shows the structural example of the sealing member in the state in which the sealing member was attached, (b) is a top view which shows the structure of the sealing member in the state in which the sealing member was removed.

[Embodiment]
The airtightness inspection apparatus according to the present embodiment will be described with reference to FIGS.

  FIG. 1 is a plan view showing a configuration example of the airtightness inspection apparatus according to the present embodiment during inspection, (a) is a side view, and (b) is a top view. FIG. 2 is a plan view showing a configuration example of the airtightness inspection apparatus during non-inspection, where (a) is a side view and (b) is a top view.

  The airtightness inspection device 100 according to the present embodiment is a device for inspecting the airtightness of the waterproof connector 2 in which a plurality of terminal holes (six in this embodiment) are formed.

  In the following, a case where the waterproof connector 2 is inspected for airtightness in the entire finished product in which the waterproof connector 2 is connected to the electric cable 3 will be described as an example. In the present embodiment, four terminal holes among the six terminal holes of the waterproof connector 2 are sealed with waterproof terminals (not shown) of the electric wire cable 3 of the connection target device.

(Outline of airtight inspection equipment)
The airtightness inspection device 100 is disposed on the base 10, the first holding member 11 that is fixed to the base 10 and holds the waterproof connector 2, and can move forward and backward with respect to the first holding member 11. And a second holding member 12.

(First holding member)
The first holding member 11 has a fixing portion 111 fixed to the base 10 and a holding portion 112 that holds the waterproof connector 2.

  An air supply unit 110 for supplying air is provided on the opposite side of the fixing unit 111 from the holding unit 112. The air supplied from the air supply unit 110 is supplied to the inside of the waterproof connector 2 through a supply hole 111 a formed in the fixing unit 111.

  The holding portion 112 is fixed to the end surface 111 b of the fixing portion 111 that faces the second holding member 12, and opens to the second holding member 12 side. A part of the waterproof connector 2 is housed in a sealed state in the opening.

(Second holding member)
The second holding member 12 holds the first and second sealing members 131 and 132 formed in a shaft shape. The first and second sealing members 131 and 132 are fixed to the second holding member 12. Each of the first and second sealing members 131 and 132 is an example of the “sealing member” in the present invention.

  The second holding member 12 has a first sealing member 131 and a fifth terminal hole into which the first sealing member 131 is inserted with respect to the waterproof connector 2 held by the first holding member 11. The first sealing member 131 is held at a position where it is coaxial with 211e. Similarly, the second holding member 12 has a second sealing member 132 and a second sealing member 132 inserted into the waterproof connector 2 held by the first holding member 11. The second sealing member 132 is held at a position where the sixth terminal hole 211f is coaxial.

  More specifically, the first sealing member 131 is positioned coaxially with the fifth terminal hole 211e of the waterproof connector 2, and the second sealing member 132 is the sixth terminal hole 211f of the waterproof connector 2. And is located on the same axis.

  Further, the second holding member 12 can move back and forth between the inspection position X and the non-inspection position Y in the axial direction of the first and second sealing members 131 and 132 (hereinafter simply referred to as the axial direction). It is arranged on the base 10.

  As shown in FIGS. 1A and 1B, the inspection position X is such that the first and second sealing members 131 and 132 are respectively inserted into the fifth and sixth terminal holes 211e and 211f of the waterproof connector 2. It is a position where it can be inserted and an airtight inspection is possible. Note that the second holding member 12 is locked at the inspection position X by a lock mechanism (not shown).

  In the non-inspection position Y, as shown in FIGS. 2A and 2B, the first and second sealing members 131 and 132 are connected to the fifth and sixth terminal holes 211e and 211f in the waterproof connector 2. The extracted position.

  In the airtightness inspection device 100 according to the present embodiment, the second holding member 12 moves forward and backward between the inspection position X and the non-inspection position Y with respect to the first holding member 11, whereby the waterproof connector 2. The first and second sealing members 131 and 132 can be attached to and detached from the fifth and sixth terminal holes 211e and 211f.

  As a modification, the first and second sealing members 131 and 132 are moved by moving the first holding member 11 in the axial direction relative to the second holding member 12 fixed to the base 10. You may comprise so that it can remove | desorb. That is, it is only necessary that the sealing member can be attached to and detached from any terminal hole of the waterproof connector 2 by the relative movement of the first holding member 11 and the second holding member 12 in the axial direction.

(Wire cable)
The electric wire cable 3 includes a plurality of electric wire main bodies 31 formed by coating a conductor with an insulator, a sheath 32 covering the plural electric wire main bodies 31a to 31d (see FIG. 7 to be described later), and heat adhered to the outer peripheral surface of the sheath 32. A contraction tube 33. Air is supplied to the electric cable 3, and this air is supplied to the waterproof connector 2 side through a slight gap formed between the conductor of the electric wire body 31 and the insulator.

  Inside the open end of the heat shrinkable tube 33 is filled with a hot melt adhesive. Thereby, the space between the heat shrinkable tube 33 and the electric wire main body 31 is sealed. In FIG. 1 and FIG. 2, for convenience of explanation, a plurality of electric wire main bodies 31 a to 31 d are collectively illustrated as one electric wire main body 31.

(Guide member and coil spring)
Between the fixed portion 111 of the first holding member and the second holding member 12, shaft-shaped first and second guide members 151 that guide the forward and backward movement of the second holding member 12 in the axial direction. 152 is provided. As the first and second guide members 151 and 152, for example, a ball guide mechanism can be used.

  A first coil spring 141 is attached to the first guide member 151 so as to wind the outside of the first guide member 151. The first coil spring 141 is sandwiched between the fixing portion 111 of the first holding member 11 and the second holding member 12 and is arranged in a compressed state at the inspection position X of the second holding member 12. ing. Thereby, the second holding member 12 at the inspection position X receives an elastic force in a direction away from the second holding member 12 (a direction from the inspection position X toward the non-inspection position Y).

  Similarly, a second coil spring 142 is attached to the second guide member 152 so as to wrap around the outside of the second guide member 152. The second coil spring 142 is sandwiched between the fixing portion 111 of the first holding member 11 and the second holding member 12 and is disposed in a compressed state at the inspection position X of the second holding member 12. Has been. Thereby, the second holding member 12 at the inspection position X receives an elastic force in a direction away from the second holding member 12 (a direction from the inspection position X toward the non-inspection position Y).

  Accordingly, the second holding member 12 can be moved to the non-inspection position by the elastic force of the first and second coil springs 141 and 142. Accordingly, when removing the first and second sealing members 131 and 132 from the waterproof connector 2, it is not necessary to manually move the second holding member 12. Workability when removing the stop members 131 and 132 is improved.

(Waterproof connector)
FIG. 3 is a plan view showing a configuration example of the waterproof connector 2, wherein (a) is a top view, (b) is a side view, (c) is a rear view, and (d) is a rear view. It is a front view. FIG. 4 is a perspective view showing a configuration example of the first to sixth terminal holes 211a to 211f of the waterproof connector 2 and the sealing member.

  The waterproof connector 2 has a substantially rectangular shape, and includes a terminal accommodating portion 21 that accommodates a terminal fitting (not shown) provided at an end of the electric wire main body 31 of the electric cable 3, and a housing 22 that accommodates the terminal accommodating portion 21. ,have. In the present embodiment, the terminal fitting of the electric wire cable 3 is inserted from the first to fourth terminal holes 211 a to 211 d and accommodated in the terminal accommodating portion 21.

  The terminal accommodating portion 21 includes a held portion 210 held by the holding portion 112 of the first holding member 11 and an insertion portion 211 into which a terminal fitting connected to the end portion of the electric wire main body 31 of the electric cable 3 is inserted. Are integrated.

  As shown in FIGS. 3A and 3B, a part of the held part 210 is accommodated in the accommodating part 220 formed in the housing 22, and the other part is exposed to the outside of the housing 22. ing. Further, a rubber packing 23 is attached to the held portion 210.

  The insertion portion 211 is formed with first to sixth terminal holes 211a to 211f. The first to sixth terminal holes 211a to 211f penetrate the terminal accommodating portion 21 in the axial direction.

  As shown in FIG. 3D, a connector (for example, a male connector) of the waterproof connector 2 is provided on the end surface 210 g of the held portion 210 on the side where the terminal accommodating portion 21 faces the first holding member 11. ) First through sixth insertion holes 210a to 210f are formed. The first to sixth insertion holes 210a to 210f communicate with each of the first to sixth terminal holes 211a to 211f.

  As shown in FIG. 3C, an opening 221 is formed on the end surface of the housing 22 on the side where the housing 22 faces the first holding member 11. The insertion part 211 of the terminal accommodating part 21 faces the outside from the opening 221.

  Three holes of the first to third terminal holes 211a to 211c are arranged side by side at equal intervals, and three holes of the fourth to sixth terminal holes 211d to 211f are arranged side by side at equal intervals. Yes. The first to third terminal holes 211a to 211c and the fourth to sixth terminal holes 211d to 211f are provided at positions shifted in the vertical direction.

  In this embodiment, the waterproof connector 2 is described as an example of a 6-pole connector in which 6 terminal holes are formed. However, the present invention is not limited to this, and for example, a 4-pole connector having 4 terminal holes may be used. Alternatively, an 8-pole connector may be used.

  As shown in FIG. 4, the 1st thru | or 4th electric wire main bodies 31a-31d in the electric wire cable 3 are inserted in the 1st thru | or 4th terminal holes 211a-211d of the waterproof connector 2, respectively. Wire seals (not shown) are provided at the ends of the first to fourth electric wire bodies 31a to 31d disposed in the first to fourth terminal holes 211a to 211d. Thus, the first to fourth terminal holes 211a to 211d are sealed.

  As described above, the first and second sealing members 131 and 132 are inserted into the fifth and sixth terminal holes 211e and 211f of the waterproof connector 2 and sealed. Note that any of the first to sixth terminal holes 211a to 211f can be sealed by rearranging the positions of the first and second sealing members 131 and 132. Therefore, for example, the first and second sealing members 131 and 132 may be configured to seal the first and second terminal holes 211a and 211b. In this case, the 3rd thru | or 6th terminal holes 211c-211f are sealed by each wire seal of the some electric wire main body of the electric wire cable 3. FIG.

  Next, the support structure of the waterproof connector 2 will be described with reference to FIGS. FIG. 5 is an explanatory view showing an example of a support structure of the waterproof connector 2, (a) is a state before the waterproof connector 2 is attached to the first holding member 11, and (b) is a waterproof connector. 2 is attached to the first holding member 11. FIG. 6 is a cross-sectional view taken along line AA in FIG.

  As shown in FIG. 5A, a fitting portion 113 that fits the held portion 210 in the waterproof connector 2 is provided inside the holding portion 112 of the first holding member 11. The holding portion 112 and the fitting portion 113 are provided so as to protrude from the end surface 111 b of the fixing portion 111 to the first holding member 11 side.

  As shown in FIG. 6, the holding portion 112 and the fitting portion 113 of the first holding member 11 have a substantially rectangular shape when viewed in the axial direction, and are open to the waterproof connector 2 side. A space formed in the fitting portion 113 is provided as an accommodation space 113a in which the terminal accommodation portion 21 of the waterproof connector 2 is accommodated.

  The outer wall 22a of the housing 22 of the waterproof connector 2 is fitted into a gap formed between the inner surface 112a of the holding portion 112 and the outer surface 113b of the fitting portion 113.

  When attaching the waterproof connector 2 to the first holding member 11, as shown in FIG. 5 (b), a waterproof type is provided in the gap between the inner surface 112 a of the holding portion 112 and the outer surface 113 b of the fitting portion 113. The outer wall 22a of the housing 22 of the connector 2 is slid in the axial direction. When the fitting portion 113 of the first holding member 11 is fitted to the held portion 210 in the waterproof connector 2, the inner surface 113 c of the fitting portion 113 and the outer surface of the packing 23 are elastically adhered. Thereby, the inside of the terminal accommodating part 21 of the waterproof connector 2 will be in the sealed state.

  Thus, by sliding the outer wall 22a of the housing 22 in the waterproof connector 2 between the holding portion 112 and the fitting portion 113, the sealed state of the waterproof connector 2 is ensured and the first holding member 11 is smooth. Can be attached to. Thereby, it is possible to improve the mounting workability of the waterproof connector 2.

(First and second sealing members)
FIGS. 7A and 7B are plan views showing a configuration example of the first sealing member 131, in which FIG. 7A shows a state in which the seal member is attached, and FIG. 7B shows a state in which the seal member has been removed. Note that since the second sealing member 132 has the same configuration as the first sealing member 131, the first sealing member 131 will be described as a representative example here.

  As shown in FIG. 7A, the first sealing member 131 is a metal member, and integrally includes a large diameter portion 131b and a small diameter portion 131c. An annular seal member 16 is fitted to the large diameter portion 131b. The seal member 16 is, for example, a rubber O-ring. The seal member 16 seals between the inner diameter of the fifth terminal hole 211 e of the waterproof connector 2 and the outer surface of the first sealing member 131. Thereby, the airtightness in the airtightness inspection apparatus 100 is securable. In addition, the number of the sealing members 16 is not limited thereto, and for example, two sealing members may be fitted to the first sealing member 131 so as to be arranged along the axial direction.

  As shown in FIG. 7B, an annular groove 131 a for attaching the seal member 16 is formed in the large diameter portion 131 b of the first sealing member 131. For example, a male screw is formed in the small diameter portion 131c, and the first sealing member 131 can be fixed to the second holding member 12 by being screwed into a screw hole formed in the second holding member 12. Has been.

(Airtight inspection method)
In the case of performing an airtight inspection with the airtight inspection device 100, first, the second holding member 12 is positioned at the non-inspection position Y, and the waterproof connector 2 in a state where the electric cable 3 is connected is used as the first holding member. 11 holding parts 112.

  Then, the second holding member 12 is moved to the inspection position X, and the first and second holding members 12 are inserted into the fifth and sixth terminal holes 211e and 211f of the waterproof connector 2 and sealed. The second holding member 12 is locked with respect to the first holding member 11. Thereby, the sealed state of the waterproof connector 2 is ensured.

  Next, air is supplied to the waterproof connector 2 from the air supply unit 110 and the electric cable 3 side, and when the internal pressure of the waterproof connector 2 reaches a predetermined value, the supply valve is closed and the supply of air is stopped. In this state, if the internal pressure of the waterproof connector 2 does not fluctuate by a leak detection device such as a leak tester, the test is accepted. In the present embodiment, since air is supplied from both the electric cable 3 side and the first holding member 11 side, for example, air is supplied only from the electric cable 3 side. The filling time is shortened.

  When the airtight inspection is completed, when the lock on the second holding member 12 is released, the second holding member 12 is automatically moved from the inspection position X by the elastic force to the first and second coil springs 141 and 142. Move to the non-inspection position Y. This eliminates the need to manually move the second holding member 12 to the non-inspection position Y. That is, the workability in the inspection of the airtight inspection apparatus 100 can be improved.

(Function and effect)
According to the present embodiment, the first and second sealing members 131 and 132 can be attached and detached by moving the second holding member 12 relative to the first holding member 11 side, so that the waterproof connector The workability at the time of inspection 2 can be improved.

  Here, for example, when the first and second sealing members 131 and 132 are manually inserted into the terminal holes of the waterproof connector 2, the first and second sealing members 131 and 132 are arranged in the axial direction. There is a possibility that it will be inserted in an inclined state. In this case, the inner surface of the terminal hole of the waterproof connector 2 may be damaged.

  On the other hand, in the present embodiment, the second holding member 12 causes the first and second sealing members 131 and 132 to be coaxial with the respective terminal holes of the fifth and sixth terminal holes 211e and 211f. Since the second holding member 12 is moved along the first and second guide members 151 and 152, the first and second sealing members 131 and 132 are moved to the first holding member 12. The fifth and sixth terminal holes 211e and 211f can be accurately inserted.

  In the present embodiment, the first to fourth terminal holes 211a to 211d among the plurality of terminal holes 211a to 211f of the waterproof connector 2 are connected to the electric cable 3, and the remaining fifth and sixth terminal holes 211e. , 211f are sealed by the first and second sealing members 131, 132.

  It should be noted that at least one sealing member may be used as long as any one of the plurality of terminal holes 211a to 211f of the waterproof connector 2 can be sealed. For example, when the 1st thru | or 5th terminal hole 211a-211e is sealed by the electric wire cable 3, the structure which seals the 6th terminal hole 211f may be sufficient as one sealing member.

  Specifically, there is a case where it is desired to perform an airtight inspection on the entire finished product in which a vehicle-mounted device such as a torque sensor and a waterproof connector are connected. For example, when the electric cable on the vehicle-mounted device side is 4 poles and the waterproof connector is a 6 pole connector, 4 terminal holes of the 6 terminal holes of the waterproof connector are used, but the remaining Since the two terminal holes become unused places, the two terminal holes need to be individually sealed and inspected. In addition, when an electric wire cable is 5 poles, there will be one unused terminal hole. Although airtightness can be ensured by inserting a dummy sealing plug into the two terminal holes, there is a problem in workability of the airtight inspection because the work of detaching the sealing plug is troublesome.

  Therefore, an object of the present invention is to provide an airtight inspection device that can easily seal unused terminal holes of a waterproof connector in a completed state.

(Summary of embodiment)
Next, the technical idea grasped from the embodiment described above will be described with reference to the reference numerals in the embodiment. However, the reference numerals and the like in the following description are not intended to limit the constituent elements in the claims to the members and the like specifically shown in the embodiments.

[1] An airtightness inspection device (100) for inspecting the airtightness of a waterproof connector (2) in which a plurality of terminal holes (211a to 211f) are formed, which has a shaft shape that can be inserted into the terminal holes. A first member that holds the waterproof connector (2) and at least one sealing member (131, 132) that is formed and seals any one of the terminal holes (211a to 211f). The sealing member (131, 132) and the sealing member (131, 132) are inserted into the holding member (11) and the waterproof connector (2) held by the first holding member (11). A second holding member (12) for holding the sealing member (131, 132) at a position where the terminal holes (211e, 211f) are coaxial with each other, and the first holding member ( 11) and the second holding member (12) The sealing members (131, 132) can be attached to and detached from the terminal holes (211e, 211f) of the waterproof connector (2) by relatively moving in the axial direction of the sealing members (131, 132). The airtight inspection device (100).

[2] A base (10) on which the first holding member (11) is fixedly installed is further provided, and the second holding member (12) is in relation to the first holding member (11). The airtightness inspection device (100) according to [1], wherein the sealing member (131, 132) is arranged so as to be movable back and forth along the axial direction.

[3] Guide members (151 and 152) for guiding the movement of the second holding member (12) along the axial direction are provided, and the guide members (151 and 152) include the second holding member. The airtightness inspection device (100) according to [2], wherein elastic members (141, 142) for applying an elastic force in a direction to move the member (12) away from the first holding member (11) are arranged.

[4] An annular seal member (16) is fitted to the sealing member (131, 132), and the terminal hole (211e) of the waterproof connector (2) is inserted by the seal member (16). , 211f) and the outer surface of the sealing member (131, 132) are sealed, the airtightness inspection device (100) according to any one of [1] to [3].

  While the embodiments of the present invention have been described above, the embodiments described above do not limit the invention according to the claims. In addition, it should be noted that not all the combinations of features described in the embodiments are essential to the means for solving the problems of the invention. The present invention can be appropriately modified and implemented without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 2 ... Waterproof type connector 3 ... Electric wire cable 10 ... Base 11 ... 1st holding member 12 ... 2nd holding member 16 ... Seal member 21 ... Terminal accommodating part 22 ... Housing 22a ... Outer wall 23 ... Packing 31 ... Electric wire main body 32 ... Sheath 33 ... Heat-shrinkable tube 100 ... Air tightness inspection device 111 ... Fixing part 112 ... Holding part 113 ... Fitting part 131 ... First sealing member 132 ... Second sealing member 151 ... First guide member 152 ... First 2nd guide member 211a ... 1st terminal hole 211b ... 2nd terminal hole 211c ... 3rd terminal hole 211d ... 4th terminal hole 211e ... 5th terminal hole 211f ... 6th terminal hole X ... inspection position Y: Non-inspection position

Claims (4)

An airtight inspection device for inspecting the airtightness of a waterproof connector in which a plurality of terminal holes are formed,
At least one sealing member that is formed in a shaft shape that can be inserted into the terminal hole, and seals any one of the plurality of terminal holes;
A first holding member for holding the waterproof connector;
A second holding unit that holds the sealing member at a position where the sealing member and the terminal hole into which the sealing member is inserted are coaxial with respect to the waterproof connector held by the first holding member. A holding member,
The sealing member can be attached to and detached from the terminal hole of the waterproof connector by the relative movement of the first holding member and the second holding member in the axial direction of the sealing member.
Airtight inspection device. A base on which the first holding member is fixedly installed;
The second holding member is disposed so as to be movable back and forth along the axial direction of the sealing member with respect to the first holding member.
The airtight inspection device according to claim 1. A guide member for guiding the movement of the second holding member along the axial direction is provided;
The guide member is provided with an elastic member that applies an elastic force in a direction away from the first holding member.
The airtight inspection device according to claim 2. An annular seal member is fitted to the sealing member,
The gap between the inner diameter of the terminal hole of the waterproof connector and the outer surface of the sealing member is sealed by the sealing member.
The airtightness inspection apparatus in any one of Claims 1 thru | or 3.

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