JP2005085648A - Housing structure of connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable another time of assembling as an assembling system for connecting wires of a motor to a connector. <P>SOLUTION: Provided with a temporary fixing means temporarily fixing a plurality of contacts connected to end parts of the wires each aligned in the same direction, a housing structure comprises a second housing component consisting of guide grooves for guiding the wires outside by bending them in a direction crossing the alignment direction of the contacts, and a first housing component equipped with a top end face part having a plurality of insertion holes of cluster pins and separating walls formed in continuation from the top end face part and for electrically separating the plurality of contacts from each other. By inserting a plurality of openings fitted at positions opposing the plurality of insertion holes into the holes from above, a contact storage room is formed of the separating walls and inner walls of the first and the second housing components. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a connector for connecting a plurality of electric wires sealed in a compressor such as a refrigerator and a refrigerator and a plurality of cluster pins, and in particular, causes a refrigerant, moisture, and other electrical short circuits inside the compressor. The present invention relates to a housing structure of a female connector capable of preventing a short circuit due to a substance.

Conventionally, it has been implanted from this connector as a connector for connecting a motor wire sealed in this type of compressor and a metal pin for connecting an external power source as a cluster pin. It has been proposed to resin-mold the portions of the plurality of terminals exposed to the inside of the compressor to prevent a short circuit. (See Patent Document 1)
JP 10-54359 A

  However, in the case of such a connector structure, it is necessary to resin-mold in a state where the terminal of the connector and the electric wire of the motor are pressure-bonded in the assembling process, so that the assembling process becomes complicated. .

  On the other hand, in this type of connector, a plurality of metal contacts that are crimped and connected to the motor wires in the compressor are sequentially connected to the housing of the resin connector from the side where the wires are not crimped to the housing. The contact is fixed to the housing. In the case of such a system, in order to prevent the connector from being detached from the housing, the connector is structured so as not to be removed once it is press-fitted into the housing.

  However, since the motor wire used in the compressor generally has a large diameter, the connector cannot be reused if the connector is pressed in the wrong position with respect to the housing. There's a problem.

  In other words, if the connector is mistakenly assembled as the power supply of the motor, the connector will be discarded and a new connector will be used. In addition to having to do this, there is a problem that if it is assembled by mistake, the assembly work takes a long time.

  With regard to this problem, the inventor related to the present application can freely detach and assemble the housing itself in order to replace the contact again and make the correction possible even if the contact is accidentally connected to the housing. I found out that it is a simple structure. However, when the housing is configured to be separable and the contact is incorporated in the housing, a new substance that causes a short circuit may enter from the assembly portion of the housing. It turns out that a problem occurs. In particular, in the case of a housing that houses a plurality of contacts connected to the tip of the electric wire of the motor in the hermetic motor, the lead housing connected to the contacts is derived from the housing of the hermetic motor. Because it is impossible to completely shut off the inside of the hermetic motor, it is necessary to pay sufficient attention to this type of short circuit problem.

  It is an object of the present invention to provide a contact housing structure that greatly reduces the above-described problems.

  In order to solve the above-described problems, in the present invention, a contact housing is provided at a position communicating with the inside of the hermetic motor, and a plurality of cluster pin pins are inserted from outside to make an electrical connection. In order to make the structure detachable, a structure that can be separated into two housing parts is adopted.

  Then, regarding the short-circuit problem that arises as a new problem due to the adoption of the separable configuration, the entry of a substance that causes a short-circuit into the housing from the portion that communicates with the inside of the hermetic motor is one of the two housing parts. In addition, a cylindrical contact insertion space surrounded by a separation wall so as to cover the periphery of each contact is to be eliminated in advance.

  More specifically, the following contact housing structure is provided.

(1) A connector housing structure for electrically connecting electric wires and cluster pins,
A plurality of contacts connected to the ends of the electric wires are provided with temporary fixing means that are temporarily fixed in a state where they are aligned in the same row direction, and are orthogonal to the alignment direction of the contacts while temporarily fixed to the temporary fixing means. A second housing part comprising a guide groove for bending and guiding the electric wires led out of the plurality of contacts to the outside in a direction;
A first housing part having a plurality of cluster pin insertion holes, and a first housing part including a separation wall that is formed continuously from the upper end surface part and electrically separates the plurality of contacts;
A plurality of contacts provided at positions opposed to the plurality of insertion holes surrounded by the separation wall of the first housing part with respect to the plurality of contacts temporarily fixed to the temporary fixing means of the second housing part. The connector housing structure is characterized in that a contact housing chamber is formed by the separation wall and the inner walls of the first and second housing parts by respectively inserting the openings of the first and second housing parts from above.

  According to the invention of (1), for example, even when applied to a housing part of a plurality of contacts connected to a magnut wire of a motor of a hermetic motor such as a compressor, oil and moisture that cause a short circuit inside the motor It is possible to prevent a short circuit between the contacts from entering the housing by storing each contact in a contact storage chamber covered with the separation wall and the inner wall of the housing part. In other words, when the contact is temporarily fixed, the contact can be easily temporarily separated by separating the first housing part and the second housing part, which is a conventional problem, and the attachment of the contact to the housing can be corrected. And in the state which assembled | attached the said 1st, 2nd housing components, since each contact can be sealed in a contact storage chamber, the problem of a short circuit can also be eliminated.

  In addition, since the guide groove is provided so that the electric wire connected to the contact is bent and accommodated in the housing, it is possible to prevent oil and moisture that cause a short circuit from entering through the electric wire as much as possible. It is.

  (2) The electric wire is an electric wire of a motor sealed in a compressor, and the housing of the housing structure is provided in a compressor block in which the motor is housed, and the plurality of openings that open toward the outside. Used to electrically connect the plurality of cluster pins to be inserted into the insertion hole by pressing with a predetermined pressure from the cluster pin side through a seal rubber. (1) The housing structure according to (1).

  According to the invention of (2), the second housing part is pressed with a substantially constant pressure by the elasticity of the sealing rubber in the direction in which the second housing part is assembled to the first housing part via the sealing rubber. Therefore, even if the rigidity of the housing is reduced by separating the first and second housing parts, it is possible to avoid as much as possible the possibility of the housing being destroyed due to the influence of the reduction in rigidity.

  (3) In the assembled state in which the contact housing chamber is formed by the first housing part and the second housing part, the lower end surface part of the first housing part and the outer peripheral part of the second housing part are continuous. The housing structure according to (1) or (2), wherein the outer corrugated plate-shaped receiving portion is in contact with the receiving portion.

  According to the invention of (3), by forming the receiving portion continuously provided on the outer peripheral portion of the second housing part with which the lower end surface portion of the first housing comes into contact with the outer corrugated plate, Even in a structure in which the second housing part is pressed against the first housing part from above the plurality of pins, the thickness of the first housing part itself is increased in order to increase the rigidity of the first housing part. The rigidity can be maintained. For example, even if the housing is made of a resin that is less rigid than metal, the outer shape of the housing of the contact is prevented from becoming large in order to secure the contact storage chamber as a result of increasing the thickness. can do.

As is apparent from the above description, according to the present invention, the first housing part and the second housing part that are configured to be assembled or separated vertically are configured to be electrically connected to the electric motor motor wire. A housing structure of a rectangular contact in a plan view of an outer shape that houses a plurality of contacts,
In the upper end surface portion of the first housing part, while forming a plurality of insertion holes drilled in a row at a predetermined interval in the longitudinal direction,
The second housing component integrally forms a bottom surface and a wall surface portion provided continuously upward along the outer periphery of the bottom surface, and one side surface portion in the longitudinal direction of the wall surface portion faces each other. Temporarily fixing the same number of contacts as accommodated, formed higher than the other side portion and configured in an L shape when viewed from the side, while being inverted upward from the bottom surface surrounded by the wall surface portion Providing means,
In a state where the contact is temporarily fixed to the contact temporary fixing means, the first housing part is viewed from above with respect to the second housing part so as to coincide vertically with the insertion hole of the second housing part corresponding to the contact. By adopting a contact housing structure characterized in that one housing part can be assembled, the housing structure which has been conventionally configured integrally can be appropriately assembled or separated. Since the contact that has been fixed to the housing due to a wrong polarity or the like can be temporarily separated from the housing and then fixed again, the contact mounting efficiency can be improved. improves. Since the temporary contact fixing means is provided for one of the housing parts having a separable structure, for example, even if the contact is connected to a hard electric wire such as a motor electric wire, a plurality of contacts can be relatively easily arranged on one side. It becomes possible to temporarily fix to the housing parts.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[1. Assembly structure)
FIG. 1 is a perspective view showing an external configuration of an assembly according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the assembly. This assembly is a state in which a contact as a crimp terminal to which a wire is crimped is incorporated into a housing described later.
With reference to FIG.1 and FIG.2, the assembly A which concerns on this Embodiment is applied to the connector for electric compressors, Comprising: The electric wire W is crimped | compressed so that the specific function may be performed ( In this embodiment, three contacts T, CPA holder H, connector housing CH, and a number (three in this embodiment) of cluster pins P corresponding to the contacts T are organically combined and assembled. It has been. Specifically, as shown in FIG. 2, each contact T that has been subjected to wire crimping is attached to the CPA holder H in a predetermined manner, and in this state, the connector housing CH is disposed so as to accommodate each contact T therein. The cluster pins P are inserted from above, and each cluster pin P is inserted from above the connector housing CH.
[2. Contact crimp terminal)
[2-1. Contact configuration
FIG. 5 is a perspective view showing an external configuration of a contact as a crimp terminal according to the embodiment of the present invention. 7 is a view of the contact T from five directions. FIG. 7A is a plan view, FIG. 7B is a bottom view, and FIG. 7C is a front view seen from the pin insertion direction. (D) is a right side view, and (E) is a left side view. Further, FIG. 8 is an enlarged sectional view taken along line VIII-VIII in FIG. FIG. 9 is an enlarged cross-sectional view taken along line IX-IX in FIG. With reference to these drawings, the contact T according to the present embodiment is a wire to which one end of a rectangular tube 1 into which a cluster pin P is inserted and an electric wire W including a core wire from which an insulation coating has been peeled is crimped. The barrel 2 is integrally provided.

  The rectangular cylinder 1 includes a bottom wall 1B, a left side wall 1L and a right side wall 1R that are erected so as to face each other from both ends in the width direction of the bottom wall 1B, and a bottom side above the left side wall 1L and the right side wall 1R. And an upper wall 1U provided so as to face the wall 1B. Incidentally, when viewed from the insertion direction D of the cluster pin P, the left wall is referred to as the left wall 1L, and the right wall is referred to as the right wall 1R. On the near side related to the pin insertion direction D, the cluster pins P are inserted into the rectangular cylinder 1 from the openings defined by the bottom wall 1B, the left side wall 1L, the right side wall 1R, and the top wall 1U.

  The wire barrel 2 is arranged on the back side of the rectangular cylinder 1 in relation to the pin insertion direction D, and is curved in a substantially U shape when viewed from the pin insertion direction side. A plurality of (7 in the present embodiment) channel processing grooves 2A are formed. Thus, the wire crimping force of the wire barrel 2 is increased by forming the channel processing groove 2A.

  Notches 3L and 3R are provided at the respective pin insertion side ends of the left side wall 1L and the right side wall 1R of the rectangular cylinder 1 (in particular, FIG. 5, FIG. 7 (D), FIG. 7 ( E), well shown in FIGS. 8 and 9). The notch 3L on the left side wall side is for absorbing insertion blur of the cluster pin P toward the left side wall when the cluster pin P is inserted, and the depth direction of the pin insertion side end of the left side wall 1L It is formed toward. On the other hand, the notch 3R on the right side wall side is for absorbing insertion blur of the cluster pin P toward the right side wall when the cluster pin P is inserted. It is formed toward the depth direction.

  The first chamfered portion 4L is provided on the back side of the notches 3L and 3R of both the left side wall 1L and the right side wall 1R and intersects with the outer peripheral surface of the cluster pin P when the cluster pin P is inserted. , 4R are provided. Each of the first chamfered portions 4L and 4R is formed so as to be gradually inclined toward the inside of the rectangular tube 1 (particularly well illustrated in FIGS. 5 and 9).

  On the other hand, each pin insertion side end of the left side wall 1L and the right side wall 1R, which is continuous with the notch line on the bottom wall side of the notches 3L and 3R, includes a connector housing CH (second housing in the present invention). The second chamfered portions 5L and 5R are provided on the surfaces that intersect the inner surface of the contact storage chamber 20 when the housing component is inserted into the contact storage chamber 20 (see FIGS. 15A and 15C), respectively. Is provided. These second chamfered portions 5L and 5R are formed so as to be gradually inclined toward the outside of the rectangular tube 1 (especially well shown in FIGS. 5 and 9).

  Engagement notches 6L and 6R that engage with stabilizers F121S and B121S (see FIG. 10) of the CPA holder H are formed at the wire barrel side ends of both the left side wall 1L and the right side wall 1R. Has been.

  A lance 7 is provided inside the rectangular tube 1 so as to protrude from the bottom wall 1B of the rectangular tube 1 (particularly well shown in FIG. 8). The lance 7 is used to lock the cluster pin P by elastically urging the cluster pin P toward the upper wall 1U of the rectangular tube 1 in the rectangular tube 1 when the cluster pin P is inserted. Is. Specifically, the lance 7 is cantilevered from the near side in the pin insertion direction D to the bottom wall 1B, and a free end 7A whose free end is in contact with the cluster pin P, and the back of the pin insertion direction D The bottom wall 1B is cantilevered from the side, and a free end portion is provided with a cut-and-raised piece 7B that contacts the free end portion of the folded piece 7A. The free end of the folded piece 7A is substantially flush with the notch line on the bottom wall side of the notches 3L and 3R. On the other hand, the free end portion of the cut and raised piece 7B is in contact with the lower surface of the free end portion of the folded piece 7A. In other words, the contact area between the free end of the folded piece 7A and the free end of the cut-and-raised piece 7B is relative to the free end of the leaf spring (that is, the cut-and-raised piece 7B) whose fulcrum is the back side in the pin insertion direction. Thus, a so-called anti-stress over structure is formed in which the free ends of the leaf springs (that is, the folded pieces 7A) with the front side in the pin insertion direction as a fulcrum are overlapped.

  Retainers 8L and 8R are respectively formed on both the left side wall 1L and the right side wall 1R of the rectangular tube 1 so as to be bent outward from the rectangular tube 1 with the front side in the pin insertion direction D as a fulcrum (particularly, 7 (A), FIG. 7 (B) and FIG. These retainers 8L and 8R are for locking the contact T in the contact storage chamber 20 in order to maintain the storage state when the contact T is stored in the contact storage chamber 20 of the connector housing CH. Therefore, the clearance for the left side wall 1L of the retainer 8L on the left side wall gradually increases from the fulcrum of the retainer 8L toward the depth direction of the rectangular tube 1 (that is, the back side in the pin insertion direction D). The free end portion is bent toward the left side wall 1L so as to be substantially parallel to the left side wall 1L. On the other hand, in the retainer 8R on the right side wall, the clearance with respect to the right side wall 1R gradually increases as it goes from the fulcrum of the retainer 8R to the depth direction of the rectangular tube 1 (that is, the back side in the pin insertion direction D). The free end portion is bent toward the right side wall 1R so as to be substantially parallel to the right side wall 1R.

[2-2. (Formation of crimp terminal)
FIG. 6 is a development view of the crimp terminal before bending. Referring to FIG. 6, the contact T is formed from a single metal plate. That is, when forming the contact T, a plurality of contacts T formed in the unfolded state are punched from the metal plate in a state of being connected to the runner R, and after the punching step is finished, the respective parts are bent to finish the contact T. A step of forming into a shape and a step of separating each contact T from the runner R after the end of the bending step are included. Therefore, the contact T is provided with a longitudinal base B that is cantilevered by the runner R in the unfolded state at the time when the punching process is completed, and the forming elements of the respective parts are related to the base B. Is provided.

  Specifically, in a region on the front side of the pin insertion direction D and serving as the bottom wall 1B of the rectangular tube 1 of the base B, punching that enables the cut-and-raised piece 7B to be bent in the predetermined direction is performed. Hole B1 is opened. In addition, in this region, the first wing W1 and the second wing that are integrally provided along the longitudinal direction of the base B and extend along the left-right direction orthogonal to the longitudinal direction. W2 is provided. Note that the lengths of both wings W1, W2 are set to be approximately the same size.

  A punching hole W11 that allows the retainer 8L to be bent in the predetermined direction is formed in a main surface of the first wing W1 that is the left side wall 1L of the first wing W1. The engagement notch 6L is formed on the rear end side related to the pin insertion direction D in the same region. Cuts W12 and W13 for facilitating bending of the base portion and the free end portion of the first wing W1 are formed in the front end side related to the pin insertion direction D of the first wing W1. In addition, at the free end of the first wing W1, a locking tongue piece W14 is provided on the free end side to the outside of the first wing W1 (that is, as viewed from the pin insertion direction D to the left). A pair of locking holes W15 are opened along the pin insertion direction D in the region that becomes the left shoulder of the upper wall 1U of the rectangular cylinder 1 at the free end portion. .

  On the other hand, a punching hole W21 that allows the retainer 8R to be bent in the predetermined direction is formed in a base portion of the second wing W2, which is the right side wall 1R of the second wing W2. The engagement notch 6R is formed on the rear end side related to the pin insertion direction D in the region. Cuts W22 and W23 for facilitating bending of the base portion and the free end portion of the second wing W2 are formed in the front end side related to the pin insertion direction D of the second wing W2. In addition, a pair of locking tongues W24 is provided at the free end of the second wing W2, and viewed from the outside of the second wing W2 (that is, viewed from the pin insertion direction D). A locking hole W25 is opened along the pin insertion direction D in the region that becomes the right shoulder of the upper wall 1U of the rectangular cylinder 1 at the free end. Yes.

  In both the boundary regions between the wings W1, W2 and the base B, long holes 9L, 9R for facilitating bending of the bases of the wings W1, W2 are orthogonal to the pin insertion direction D, respectively. It is opened along the left-right direction.

  The back side of the pin insertion direction D and the region between the runner R of the base B and the wings W1, W2 are integrally provided along the longitudinal direction of the base B and orthogonal to the longitudinal direction. The first barrel wing BW1 and the second barrel wing BW2 extending along the left-right direction are provided. The lengths of both barrel wings BW1 and BW2 are set to be approximately the same size.

  The extra length portion B2 of the base B extending from the wings W1, W2 which are the forming elements of the rectangular cylinder 1 toward the side opposite to the insertion direction of the cluster pin P has the contact T formed into a final form by bending. At this point, the folded piece 7A is formed, and on its free end side, a pair of tongue pieces B2L and B2R project in the left-right direction perpendicular to the longitudinal direction (that is, the pin insertion direction D). Is formed.

  In the bending step, when the rectangular tube 1 is formed, the lance 7 is first formed. Specifically, the cut and raised piece 7B is bent upward at a predetermined angle (for example, around 35 degrees) with respect to the base B with the wire barrel forming element side as a fulcrum. Then, the free end portion of the cut and raised piece 7B is bent toward the base B to form a bowl shape. Thereafter, the free end portion of the surplus length portion B2 of the surplus length portion B2 is formed with a predetermined angle (for example, around 12 degrees) with respect to the base B, with the surplus length portion B2 of the base B as a fulcrum. Fold up until it comes into contact with the free end of the cut and raised piece 7B. This folded portion becomes the folded piece 7A. Then, the free end portion of the folded piece 7A (the extra length portion B2 of the base B) is bent toward the base B so that the free end portion is cut and raised and is in close contact with the free end portion of the piece 7B. The lance 7 is completed by bending the series of the cut and raised pieces 7B and the extra length B2 (folded piece 7A) of the base B (see FIG. 8).

  When the bending process for forming the lance 7 is completed, the base portion of the first wing W1 is bent 90 degrees inward (second wing side) in the vertical direction along the longitudinal direction of the base B. Thereby, the left side wall 1L of the rectangular cylinder 1 is formed. At this time, the retainer 8L comes into contact with the tongue piece B2L on the first wing side of the extra length B2 of the base B, which is the folded piece 7A, and the retainer 8L is on the left side with the front side in the pin insertion direction D as a fulcrum. It expands toward the outside of the wall 1L (see FIG. 9). The expanded retainer 8L is given an elastic force with the tongue piece B2L as a fulcrum. Subsequently, the free end portion of the first wing W1 is bent 90 degrees inward (second wing side) in the horizontal direction along the cut line. After that, the base of the second wing W2 is bent 90 degrees inward (first wing side) in the vertical direction along the longitudinal direction of the base B. Thereby, the right side wall 1R of the rectangular tube 1 is formed. At this time, the retainer 8R comes into contact with the second wing side tongue piece B2R of the extra length B2 of the base B, which is the folded piece 7A, and the retainer 8R is on the right side with the near side in the pin insertion direction D as a fulcrum. It expands toward the outside of the wall 1R (see FIG. 9).

  The expanded retainer 8R is given an elastic force with the tongue piece B2R as a fulcrum. Further, the locking tongue W14 of the first wing W1 is fitted into the locking hole W25 of the second wing W2 (see FIG. 7D). As a result, the free end of the first wing W1 is locked by the second wing W2. Subsequently, the free end of the second wing W2 is overlapped with the free end of the first wing W1 so as to define a rectangular space for pin insertion. It is bent 90 degrees inward (first wing) in the horizontal direction along the cut line. At this stage, the upper wall 1U of the rectangular cylinder 1 with the base B as the bottom wall 1B is formed. Finally, the locking tongue piece W24 of the second wing W2 is bent into the locking hole W15 of the first wing W1 (see FIG. 7E). As a result, the free end of the second wing W2 is locked by the first wing W1. The rectangular cylinder 1 is completed by bending the series of both wings W1, W2 (see FIG. 5).

  On the other hand, in forming the wire barrel 2 in the bending step, both the barrel wings BW1 and BW2 are formed along the longitudinal direction of the base B and the both barrel wings BW1 and BW1 so as to form a substantially U shape together with the base B. BW2 bends in the direction facing each other. Bending the both barrel wings BW1 and BW2, thereby completing the wire barrel 2.

[3. Configuration of CPA holder]
FIG. 10 is a perspective view showing an external configuration of the CPA holder according to the embodiment of the present invention. The CPA holder H corresponds to the first housing component in the present invention. 11A is a front view of the CPA holder H, and FIG. 11B is a right side view of the CPA holder H. 12A is a left side view of the CPA holder H, FIG. 12B is a cross-sectional view taken along line XIIIB-XIIIB in FIG. 11A, and FIG. 12C is a rear view of the CPA holder H. is there.

  The CPA holder H according to the present embodiment is a molded product made of synthetic resin, and, as shown in FIG. 2, a plurality of (T3 in this embodiment) contacts T that have been subjected to wire crimping are provided. In a state where the electric wire W mounted with the rectangular tube 1 facing up and crimped to the wire barrel 2 of each contact T is pulled out in a direction (right direction in the present embodiment) orthogonal to the terminal mounting posture, Each contact T is configured to be held. The CPA holder H is integrally formed with a bottom surface 11A and a wall surface portion 11B provided continuously upward along the outer periphery of the bottom surface 11A, and one side surface portion in the longitudinal direction of the wall surface portion. The height L1 is formed to be higher than the height L2 of the opposite side surface portion and is configured in a substantially L shape in side view.

  Referring to FIGS. 10 to 12, specifically, the CPA holder H includes a back block 10 having a substantially C-shaped planar shape as the one side surface portion, and the other side surface portion. And a terminal holding block 11 having temporary holding means for temporarily holding the contact T.

  The terminal holding block 11 is provided integrally with the back block 10 in a state of being spaced apart from a main part (back portion) of the back block 10. The terminal holding block 11 is dug along a plurality of (three in the present embodiment) terminal stands 12 aligned at a predetermined interval in the left-right direction and along the alignment direction of the terminal stands 12. And an electric wire guide groove 13. This terminal stand 12 has a stand inverted piece that functions as a temporary fixing means in the present invention. However, the present invention is not limited to the structure of the temporary fixing means of this embodiment, and it is needless to say that the design can be appropriately changed to other temporary fixing means having a function capable of temporarily fixing the contact.

  Each terminal stand 12 is provided with terminal stand inverted pieces F121 and B121 on which the contact T is mounted with the rectangular tube 1 facing upward in the front-rear direction across the wire guide groove 13. The terminal stand inverted pieces F121 and B121 on both sides include stabilizers F121S and B121S as engagement receiving portions that engage with the engagement notches 6L and 6R as the engagement portions of the rectangular cylinder 1 of the contacts T, respectively. The rear of the wire barrel 2 where the electric wire W is crimped from the rear end surface of the rectangular cylinder 1 with the stabilizers F121S and B121S as apexes and the upper wall 1U of the rectangular cylinder 1 of the contact T facing the left side. It has a stepped structure that matches the outer shape that reaches the end. A partition wall 15 is interposed between each rear terminal stand element B 121 and the main part of the back block 10 so as to create a gap 14 so as to be sandwiched between the back block 10 and each terminal stand 12. Each partition 15 is integrated with each terminal stand 12 (particularly well shown in FIG. 12B).

  In addition, between the terminal stands 12, engaging pieces F <b> 16 and B <b> 16 as locking pieces according to the present invention planted upward from the bottom surface 11 </ b> A of the CPA holder H sandwich the wire guide groove 13. The engaging pieces F16 and B16 on both sides define the wire guide groove 13 together with each terminal stand 12 (particularly, FIG. 10, FIG. 11B and FIG. 12). B) is well shown).

  Further, the height L3 of each terminal stand 12 is set lower than the height L1 of the back block 10 and higher than the height L2 of the terminal holding block 11 facing the back block 10 in the short side direction. Yes. According to this configuration, when the contact T is temporarily fixed to the CPA holder H, the contact T can be easily assembled from the side of the terminal holding block 11 set to the lowest. . If the side of the terminal holding block 11 that faces the back block 10 is set to the same height L1 as the back block 10, it will be difficult to assemble the contact T. It is unsuitable for this type of housing for assembly and replacement.

  Each front engagement piece F16 engages with an engagement hole 24 (see FIGS. 13, 14B, and 15B) provided in the front wall surface of the connector housing CH. In addition, hook-shaped engagement claws F161 are formed at the tip portions so as to protrude forward (particularly well shown in FIGS. 10 and 12B).

  On the other hand, each rear engagement piece B16 is engaged with an engagement hole 24 (see FIG. 15B) on the back side of the connector housing CH, and each of the front end portions thereof has an engagement portion B16. A hook-shaped engagement claw B161 is formed to protrude rearward (particularly well shown in FIG. 12B). The engagement claws B161 of the rear engagement pieces B16 face the gaps 14 defined by both the back block 10 and the terminal holding block 11 from between the partition walls 15 respectively. In addition, a slit 17 is formed at a position corresponding to each engagement piece B16 in the main part of the back block 10, and each slit 17 is located above the lower end of the main part. Extending in the direction (especially well shown in FIGS. 12B and 12C). Therefore, each engagement piece B <b> 16 appears to be exposed through each slit 17.

  One end (the right end in the present embodiment) of the wire guide groove 13 is opened, and the other end (the left end in the present embodiment) is closed (in particular, FIG. 10, FIG. 11 (B) and (It is well shown in FIG. 12A). A bent portion of the wire W (bent angle is approximately 90 degrees), which is crimped to a contact T mounted along each terminal stand 12 at a position corresponding to each terminal stand 12 of the wire guide groove 13. A protrusion 18 for hooking is formed (particularly well shown in FIGS. 11B and 12B). Each of these protrusions 18 is installed so as to be sequentially higher toward the opening of the wire guide groove 13. Specifically, the protrusion 18 corresponding to the left terminal stand 12 is disposed at the lowest position, the protrusion 18 corresponding to the right terminal stand 12 is disposed at the highest position, and the middle position is located at the center. A terminal stand 12 is arranged. In addition, the protrusion 18 corresponding to the left terminal stand 12 and the right terminal stand 12 protrudes from the inner surface on the back side of the wire guide groove 13 into the wire guide groove 13, while corresponding to the center terminal stand 12. The protruding protrusion 18 protrudes into the wire guide groove 13 from the front inner surface of the wire guide groove 13. The width dimension of the wire guide groove 13 is set to be substantially the same as the width dimension of the wire W. The electric wire alignment protrusions 18 allow the electric wires W extending from the three contacts T to be arranged in a line in the vertical direction with respect to the electric wire guide groove 13 and sequentially stacked and stored. It is possible to prevent a fear that the plurality of electric wires W are not aligned and it is difficult to assemble the contact T to the housing.

[4. Connector housing configuration)
FIG. 13 is a perspective view showing an external configuration of a connector housing as a second housing component according to the present embodiment of the present invention. 14A is a plan view of the connector housing, and FIG. 14B is a front view of the connector housing. 15A is a cross-sectional view taken along line XVA-XVA in FIG. 14A, FIG. 15B is a cross-sectional view taken along line XVB-XVB in FIG. 14A, and FIG. It is sectional drawing which follows the XVC-XVC line | wire of FIG.

  The connector housing CH according to the present embodiment is a molded product made of synthetic resin, and as shown in FIG. 2, the CPA in a state in which a plurality (three in the present embodiment) of contacts T are held. It is configured to fit with the holder H.

  Referring to FIGS. 13 to 15, specifically, the connector housing CH has an upper portion CH1 formed thick, and a plurality of (three in the present embodiment) contacts are provided therein. A storage chamber 20 is formed (particularly well shown in FIG. 15C).

  The contact storage chamber 20 has insertion holes 22, 22, 22 surrounded by a separation wall CH 2 of the connector housing CH with respect to the plurality of contacts T temporarily fixed to the terminal stands 12, 12, 12 of the CPA holder H. A plurality of openings CH3, CH3, and CH3 provided at opposing positions are inserted from above to form a contact storage cylinder formed by the opposing separation walls CH2 and CH2, and an inner wall of the CPA holder H. ing.

  In addition, gaps 21 are formed between adjacent contact storage chambers 20, and the contact storage chambers 20 are insulated and separated from each other by the gaps 21. This gap 21 corresponds to the lock piece storage space in the present invention.

  In each of the rectangular tube storage portions of the contact storage chambers 20, there are dents 201 that are gradually expanded from the rectangular tube 1 of the contact T to the left and right outwards, and are engaged with the free ends of the retainers 8L and 8R. (Especially well shown in FIG. 15A). Each of these recesses 201 is disposed on both sides in the width direction of the rectangular tube storage portion of each contact storage chamber 20.

  A plurality of (three in the present embodiment) pin insertion holes 22 are formed in the upper end surface portion CH1 of the connector housing CH (particularly in FIGS. 13, 14A, and 15C). It is shown). Each of these pin insertion holes 22 communicates with the rectangular tube storage portion of each contact storage chamber 20, and a ring packing 23 made of silicon rubber is fitted in each of the pin insertion holes 22 ( In particular, it is well shown in FIGS. 15A and 15C). The inner diameter of the ring packing 23 is set to be substantially the same as the outer diameter of the cluster pin P. The ring packing 23 is not an essential component in the present invention, and it is a matter of course that the provision of the ring packing 23 can improve the insulation of the contact portion housed in the housing and the shielding from the outside. .

  In the region where the gap 21 is defined, both the front wall surface portion CH4 and the back wall surface portion CH5 of the connector housing CH are respectively engaged with the engaging claws F161, B161 of the engaging pieces F16, B16 of the CPA holder H. Is engaged (especially well shown in FIGS. 13, 14B and 15B).

  As shown in FIG. 1, the width dimension of the connector housing CH is the same as the width dimension of the CPA holder H so that both side faces thereof are flush with the both side faces of the CPA holder H when mated with the CPA holder H. It is set to the same size. On one side surface (right side surface in the present embodiment) of the connector housing CH, a boss 25 is formed so as to protrude downward (particularly, FIGS. 13, 14B and 15C). Well shown). As shown in FIG. 1, the boss 25 has a boundary portion between the inner and outer sides of the electric wire W of the contact T held by the CPA holder H when the CPA holder H is fitted to the electric wire guide groove 13. The width dimension is set to be the same as the width dimension of the wire guide groove 13.

[5. Assembly of assembly
3A is a plan view of the assembly, and FIG. 3B is a front view of the assembly. 4A is a cross-sectional view taken along line IVA-IVA in FIG. 3A, FIG. 4B is a cross-sectional view taken along line IVB-IVB in FIG. 3A, and FIG. It is sectional drawing which follows the IVC-IVC line | wire of FIG. 3 (A). A procedure for assembling the assembly A according to the present embodiment will be mainly described with reference to these drawings and FIG.

[5-1. Wire crimping)
When the assembly A is assembled, first, one end of the electric wire W is crimped to the wire barrel 2 of the contact T. Specifically, one end of the electric wire W is set in the wire barrel 2, and in this state, the wire barrel 2 is caulked by a crimper and an anvil of a terminal crimping device (not shown).

[5-2. Attaching the crimp terminal to the CPA holder]
When the step of crimping the wire W to the wire barrel 2 is completed, the contact T with the wire crimped is attached to the CPA holder H as shown in FIG. Specifically, first, using the required jig, the crimping side of the crimped wire W of the wire barrel 2 of the contact T is directed rightward with respect to the base B (extension line of the bottom wall 1B of the rectangular tube 1). Bend approximately 90 degrees. Thereafter, the contact T is mounted on the terminal stand 12 of the CPA holder H with the rectangular cylinder 1 facing upward. Specifically, as shown in FIG. 4C, the contact T is fitted into the terminal stand 12 and the bent wire W is fitted into the wire guide groove 13 while the bent portion is hooked on the protrusion 18. At this time, as shown in FIG. 2, the engagement notches 6L and 6R of the rectangular cylinder 1 are locked to the stabilizers F121S and B121S of the terminal stand inverted pieces F121 and B121, and as a result, the contact T is related to the stabilizers F121S and B121S. Standing in a state along the stepped shape of the terminal stand inverted pieces F121, B121. On the other hand, the electric wire W is drawn from the opening of the electric wire guide groove 13 to the right outside of the CPA holder H.

[5-3. (Fitting between holder and connector housing)
When the step of carrying (holding) the contact T on the CPA holder H is completed, the connector housing CH is arranged so that the contact T carried on the CPA holder H is accommodated in the contact accommodating chamber 20, as shown in FIG. Is inserted into the CPA holder H. At this time, the retainers 8L and 8R expanded from the rectangular cylinder 1 of the contact T abut on the step portion of the contact storage chamber 20 in front of the rectangular cylinder accommodating portion, and the retainers 8L and 8R are elastically deformed inward by the abutting force. . Thereafter, when the pin insertion side end portion of the rectangular tube 1 reaches the upper end of the rectangular tube housing portion, the retainers 8L and 8R are released from the contact force, and the retainers 8L and 8R are elastically restored. As a result, as shown in FIG. 4 (A), the free ends of the retainers 8L and 8R are engaged with the recesses 201 of the rectangular tube storage portion. On the other hand, the engagement pieces F16 and B16 of the CPA holder H enter into the gap 21 formed between the adjacent contact storage chambers 20, and the engagement claws F161 and B161 define the gap 21. It contacts the outer surface of the contact storage chamber 20. Then, the engagement pieces F16 and B16 are elastically deformed in a direction approaching each other by the contact force. When the contact T is accommodated in the contact accommodating chamber 20, the engagement pieces F16 and B16 are elastically restored by being released from the contact force, and as shown in FIGS. 3 (B) and 4 (B). The pawls F161 and B161 respectively engage with the engagement holes 24 on the front side and the back side of the connector housing CH. Thereby, the fitting of both the CPA holder H and the connector housing CH is established. At this time, as shown in FIG. 4C, the boundary between the inner and outer sides of the electric wire W crimped to the contact T is brought into close contact with the electric wire guide groove 13 by the pressing force of the boss 25 of the connector housing CH.

  In the fitting process, as shown by a one-dot chain line in FIG. 16, if there is a fitting fluctuation of the connector housing CH in the “+ D1” direction with respect to the predetermined line L1, the right side wall side of the rectangular cylinder 1 in the contact T The second chamfered portion 5 </ b> R intersects the inner surface on the right side of the rectangular tube storage portion of the contact storage chamber 20 and comes into contact with the inner surface of the rectangular tube storage portion. Therefore, the fitting shake of the connector housing CH (that is, the shake toward the left side wall) is corrected to the predetermined line L1, and the rectangular cylinder 1 is smoothly fitted into the rectangular cylinder accommodating portion of the contact accommodating chamber 20. As a result, as shown by the solid line in FIG. 16, the contact T is accommodated in the contact accommodating chamber 20 of the connector housing CH as designed.

  Conversely, as shown by a two-dot chain line in FIG. 16, if there is a fitting blur of the connector housing CH in the “−D 1” direction with respect to the predetermined line L 1, The second chamfered portion 5 </ b> L intersects the inner surface on the left side of the rectangular tube housing portion of the contact storage chamber 20 and abuts on the inner surface of the rectangular tube housing portion. Therefore, the fitting shake of the connector housing CH (that is, the shake to the right side wall side) is corrected to the predetermined line L1, and the rectangular cylinder 1 is smoothly fitted into the rectangular cylinder accommodating portion of the contact accommodating chamber 20. As a result, as shown by the solid line in FIG. 16, the contact T is accommodated in the contact accommodating chamber 20 of the connector housing CH as designed.

[5-4. Inserting cluster pins into crimp terminals)
When the fitting process of the connector housing CH to the CPA holder H is completed, the cluster pins P are inserted into the rectangular cylinder 1 of the contacts T from the pin insertion holes 22 of the connector housing CH, as shown in FIG. At this time, as shown in FIG. 4C, the cluster pin P is urged toward the upper wall 1U of the rectangular cylinder 1 by the lance 7 in the rectangular cylinder 1 of the contact T. In other words, the urging force of the lance 7 positions the cluster pins P in the rectangular cylinder 1 with respect to the bottom wall 1B and the top wall 1U (that is, the vertical direction).

  In the insertion process, as shown by the one-dot chain line in FIG. 17, when the cluster pin P is shaken in the “+ D2” direction with respect to the predetermined line L2, the outer peripheral surface of the cluster pin P is attached to the lance 7. The force is inevitably guided to the first chamfered portion 4L on the left side wall side of the rectangular tube 1 in the contact T, and the first chamfered portion 4L intersects with the outer peripheral surface of the cluster pin P, and the outer peripheral surface of the cluster pin P Abut. Therefore, the insertion blur of the cluster pin P (that is, the blur to the left side wall) is corrected to the predetermined line L2, and the cluster pin P is smoothly guided into the rectangular tube 1. As a result, as indicated by a solid line in FIG. 17, the cluster pin P is inserted into the rectangular cylinder 1 of the contact T as designed. In addition, the first chamfered portion 4L is located on the back side of the cutout 3L of the left side wall 1L. Therefore, combined with the correction action of the first chamfered portion 4L, the insertion blur of the cluster pin P is absorbed by the notch 3L.

  On the contrary, as shown by the two-dot chain line in FIG. 17, when the cluster pin P is shaken in the “−D2” direction with respect to the predetermined line L2, the outer peripheral surface of the cluster pin P is attached to the lance 7. The force is inevitably guided to the first chamfered portion 4R on the right side wall side of the rectangular cylinder 1 in the contact T, and the first chamfered portion 4R intersects with the outer peripheral surface of the cluster pin P, and the outer peripheral surface of the cluster pin P Abut. Therefore, the insertion blur of the cluster pin P (that is, the blur toward the right side wall) is corrected to the predetermined line L1, and the cluster pin P is smoothly guided into the rectangular tube 1. As a result, as indicated by a solid line in FIG. 17, the cluster pin P is inserted into the rectangular cylinder 1 of the contact T as designed. In addition, the first chamfered portion 4R is located on the back side of the cutout 3R of the right side wall 1R. Therefore, coupled with the correction action of the first chamfered portion 4R, the insertion blur of the cluster pin P is absorbed by the notch 3R.

  As described above, in this embodiment, the motor motor includes the CPA holder H as the first housing part and the connector housing CH as the first housing part that can be assembled or separated vertically. A plurality of contacts T electrically connected to the electric wires are housed.

  The upper end surface portion CH1 of the connector housing CH is formed with a plurality of insertion holes 22 formed in a row at predetermined intervals in the longitudinal direction, while the connector housing CH has a bottom surface 11A and the bottom surface 11A. The wall surface portion 11B provided continuously upward along the outer periphery of the wall surface is integrally formed, and one side surface portion (back surface block 10) in the longitudinal direction of the wall surface portion 11B is opposed to the other side surface portion (terminal holding). The number of contacts is the same as the number of contacts to be stored, which is formed higher than the block 11) and has an L-shape when viewed from the side, and is inverted from the bottom surface 11A surrounded by the wall surface portion 11B. A terminal stand 12 is provided as temporary fixing means.

  Therefore, in a state where the three contacts T are temporarily fixed to the terminal stands 12, 12, and 12, respectively, the CPA with respect to the connector housing CH from above so as to coincide with the insertion hole 22 corresponding to the contact T in the vertical direction. The holder H can be assembled.

  Further, the terminal stands 12, 12, and 12 include a pair of inverted terminal stand inverted pieces F121 and B121, which are the same as the contacts to be accommodated at a predetermined interval in the short side direction of the bottom surface 11A of the connector housing CH. When the contact notches 6L and 6R of the contact T are engaged with the terminal stand inverted pieces F121 and B121 to be in the temporarily fixed state, the electric wire W extending from the contact T is opposed to the pair of short sides. It is configured to be guided to the outside through a guide groove 13 formed between the stand inverted pieces F121 and B121.

  Furthermore, from another point of view, in the contact housing structure that can be separated in the vertical direction of the present embodiment, the terminals that are temporarily fixed in a state in which the plurality of contacts T connected to the ends of the electric wires W are aligned in the same row direction. An electric wire guide for guiding the outside by bending the electric wires W led out from the plurality of contacts T in a direction orthogonal to the alignment direction of the contacts T in a state where the stand 12 is provided and temporarily fixed to the terminal stand 12 A CPA holder H composed of a groove 13, an upper end surface portion CH1 having a plurality of insertion holes 22 for cluster pins P, and a separation wall CH2 formed continuously from the upper end surface portion CH1 for electrically separating a plurality of contacts. And a plurality of contacts T temporarily fixed to the terminal stand 12 of the connector housing CH. By inserting a plurality of openings CH3 provided at positions facing the plurality of insertion holes 22 surrounded by the separation wall CH2 from above, the inner wall of the connector housing CH and a pair of separation walls CH2, CH2 facing each other, The contact storage chamber 20 is formed by the inner wall (bottom surface 11A) of the CPA holder H.

[6. (Incorporation of the assembly in the housing of the sealed electric motor)
FIG. 18 is an explanatory view showing a state in which the assembly A is assembled in the housing of the compressor 30 as a sealed electric motor. In FIG. 18, the same components as those described above are the same. The code | symbol is attached | subjected.

  In the figure, reference numeral 31 denotes a housing as a compressor block. In this housing 31, a housing assembly A containing a motor M and a contact T connected to an electric wire W as a magnet wire of the motor M is housed. Has been. Then, the base 32 in which the cluster pins P for being inserted into the insertion holes 22 of the upper end surface portion CH1 of the contact housing CH of the assembly A are integrally pressed from above with a predetermined pressure N through the silicon rubber 33. The electrical connection is maintained.

  In the assembled state in which the contact housing chamber 20 is formed by the connector housing CH and the CPA holder H, the external wave in a plan view continuously provided on the lower end surface portion CH6 of the connector housing CH and the outer peripheral portion of the CPA holder H is shown. It is characterized in that it constitutes a state in which the plate-like receiving portion H1 is in contact. According to this configuration, there is an advantage that the stress against the pressure N pressed from above can be dealt with by the thin CPA holder H which is thinner than the case where the corrugated plate is not used.

  The present invention relates to a connector for connecting a plurality of electric wires and a plurality of cluster pins sealed in a compressor such as a refrigerator or a refrigerator. In order to simplify the work of assembling a plurality of relatively hard wires of an electric motor such as a compressor as described above to the contact housing for electrical connection with the cluster pin, the contact housing is configured to be separable. . In particular, when assembling using the housing to electrically connect the electric wire to the contact in the field, the working efficiency is significantly improved as compared with the conventional case.

  Moreover, the structure which can reduce the possibility of the short circuit of electric wires as a new problem which generate | occur | produces when it is set as the structure which can be separated is proposed.

The perspective view which shows the external appearance structure of the assembly which concerns on embodiment of this invention. The exploded perspective view of an assembly. (A) is a top view of an assembly, (B) is a front view of an assembly. 3A is a cross-sectional view taken along line IVA-IVA in FIG. 3A, FIG. 3B is a cross-sectional view taken along line IVB-IVB in FIG. 3A, and FIG. Sectional drawing which follows an IVC line. The perspective view which shows the external appearance structure of the crimp terminal which concerns on embodiment of this invention. The development view of the crimp terminal before bending. FIG. 5A is a plan view of the crimp terminal, wherein FIG. 5A is a plan view, FIG. 5B is a bottom view, and FIG. 4C is a front view viewed from the pin insertion direction, FIG. ) Is a right side view, and FIG. The expanded sectional view which follows the VIII-VIII line of Drawing 7 (A). The expanded sectional view which follows the IX-IX line of Drawing 7 (D). The perspective view which shows the external appearance structure of the CPA holder which concerns on embodiment of this invention. (A) is a front view of a CPA holder, (B) is a right side view of the CPA holder. (A) is a left side view of the CPA holder, (B) is a cross-sectional view taken along line XIIIB-XIIIB in FIG. 11 (A), and (C) is a rear view of the CPA holder. The perspective view which shows the external appearance structure of the connector housing which concerns on this Embodiment of this invention. (A) is a top view of a connector housing, (B) is a front view of a connector housing. 14A is a cross-sectional view taken along line XVA-XVA in FIG. 14A, FIG. 14B is a cross-sectional view taken along line XVB-XVB in FIG. 14A, and FIG. 14C is XVC- in FIG. Sectional drawing which follows a XVC line. The figure which shows schematically the correction mechanism with respect to the connector housing of the 2nd chamfer part of a crimp terminal. The figure which shows schematically the correction mechanism with respect to the cluster pin of the 1st chamfer part of a crimp terminal. Explanatory drawing which shows the state which assembled the assembly A in the housing of a hermetic type electric motor.

Explanation of symbols

A assembly W electric wire T contact (crimp terminal)
H CPA holder CH Connector housing P Cluster pin D Pin insertion direction 1 Rectangular tube 1B Bottom wall 1L Left side wall 1R Right side wall 1U Top wall 2 Wire barrel 3L, 3R Notch 4L, 4R First chamfered portion 5L, 5R Second Chamfered portion 7 Lance 7A Folded piece 7B Cut and raised piece B Base B2 Extra length W1 First wing W2 Second wing 12 Terminal stand 20 Contact storage chamber 22 Pin insertion hole

Claims (3)

A connector housing structure for electrically connecting an electric wire and a cluster pin,
A plurality of contacts connected to the ends of the electric wires are provided with temporary fixing means that are temporarily fixed in a state where they are aligned in the same row direction, and are orthogonal to the alignment direction of the contacts while temporarily fixed to the temporary fixing means. A second housing part comprising a guide groove for bending and guiding the electric wires led out of the plurality of contacts to the outside in a direction;
A first housing part having a plurality of cluster pin insertion holes, and a first housing part including a separation wall that is formed continuously from the upper end surface part and electrically separates the plurality of contacts;
A plurality of contacts provided at positions opposed to the plurality of insertion holes surrounded by the separation wall of the first housing part with respect to the plurality of contacts temporarily fixed to the temporary fixing means of the second housing part. The connector housing structure is characterized in that a contact storage chamber is formed by the separation wall and the inner walls of the first and second housing parts by respectively inserting the openings from above.   The electric wire is a motor electric wire sealed in a compressor, and the housing of the housing structure is provided in a compressor block that houses the motor, and is open to the plurality of insertion holes that open toward the outside. The plurality of cluster pins to be inserted into the insertion holes are used to be electrically connected by pressing with a predetermined pressure from the cluster pin side through a seal rubber. Item 2. The housing structure according to Item 1.   In an assembled state in which a contact storage chamber is formed by the first housing part and the second housing part, the first housing part and the second housing part are continuously provided on the lower end surface part and the outer peripheral part of the second housing part. The housing structure according to claim 1, wherein the housing structure is in contact with the outer corrugated plate-shaped receiving portion.

Images