JP2013227987A - Connector member connecting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the erroneous assembling of connector members, in a connector member connecting structure to which a plurality of the connector members 1, 2 are connected.SOLUTION: Outwardly-extending extensions 11, 21 are formed at connector members 1, 2. In the connector members 1, 2 which are mutually adjacently arranged, a part of each extension is made to serve as a mutually-fittable fitting part (fitting protrusive pieces 11a, 21a). The fitting parts are fittable when kinds and postures of the adjacent connector members are correct, but when not correct, they are not fittable to each other. Furthermore, protrusions 31 and recesses 21x are formed so as to be in pair at the extension 21 of the connector member and a connector housing 3, and when positions and the postures of the connector members with respect to the connector housing are correct, the protrusions and the recesses can be assembled to each other while being corresponding to each other, however, when not correct, the protrusions 31 interfere with the extensions 11, 21, and hinders the assembling.

Description

The present invention relates to a connector member connection structure including a tubular portion. In particular, the present invention relates to a connector member connection structure in which a plurality of connector members are connected side by side to the same connection object.

Delivery systems that send liquids such as water and oil and gases such as gas by piping such as rubber tubes have been realized in various fields. In these delivery systems, a plurality of pipes are often connected to a control valve body or the like via a connector member.

When a plurality of pipes and connector members are connected to the same member, there is a possibility that the connection of the connector members and the pipes is wrong, that is, there is a possibility of incorrect assembly. If it is misassembled, the delivery system cannot perform its desired function.
As a technique for preventing erroneous assembly of a connector member of a piping system, for example, one disclosed in Patent Document 1 is known. Patent Document 1 discloses that a protrusion is provided on an attached body in order to prevent erroneous assembly of piping.

Japanese Utility Model Publication No. 02-110792

As the piping system becomes more complicated, many pipes are piped into one member. Also, due to demands for space saving, piping is often arranged and connected in a grid pattern. For example, in the example of the connector member connection structure shown in FIG. 11, a total of four (four systems) pipes are attached to one member (connector housing 99). The connector housing 99 is provided with four (a, b, c, d) mounting holes for inserting the tubular portion of the connector member in a substantially square shape (left side in FIG. 11).

In this prior art example, two types of connector members 91 and 92 are attached to the connector housing. As shown in FIG. 12, the connector member is provided with two tubular portions 95, 95, respectively. The two tubular portions are connected by a plate-like connecting member, and the connector member is formed in a substantially H shape. Tubular portions 95 and 95 of the connector member are inserted into holes a, b, c and d of the connector housing, and pipes (such as rubber tubes) are connected to connection portions a1, b1, c1 and d1 provided at the other end of the connector member. Thus, a delivery system is configured.

The connector members 91 and 92 are assembled to the connector housing 99 at a predetermined position and posture. In this example, the correct arrangement is such that the hole a and the connection part a1, the hole b and the connection part b1, the hole c and the connection part c1, and the hole d and the connection part d1 are in correspondence and communicate with each other. (Right side of FIG. 11).

In such connection of the connector member, the mounting holes are arranged in a square shape and the hole pitch is almost the same, so that there is a possibility of various misassembly as shown below.
(1) Incorrect assembly that misplaces components, such as attaching the first connector member 91 to the place where the second connector member 92 should be attached correctly (FIG. 13A).
(2) Incorrect assembly in which the assembly posture of the connector member 91 is reversed such that the other end b1 corresponds to the hole a and the other end a1 corresponds to the hole b (FIG. 13B).
(3) The first mounting member 91 to be connected to the hole a and the hole b is wrongly connected to the hole a and the hole c, and the second mounting member 92 to be connected to the hole c and the hole d. Wrong assembly that misconnects the holes b and d (Fig. 13 (c))
(4) The orientation of the second mounting member 92 is wrong, and the connecting portions c1 and d1 provided at the other end instead of the tubular portions 95 and 95 are inserted into the holes c and d, and the insertion direction is wrong. Misassembly (Fig. 13 (d))

An object of the present invention is to prevent and suppress erroneous assembly of a connector member in a connector member connection structure in which a plurality of connector members are connected.

As a result of intensive studies, the inventor can efficiently regulate the combination and posture of the connector members so that the connector members adjacent to each other among the plurality of connector members can be fitted together. It was found that it is effective for suppression, and the present invention was completed.

According to the present invention, a plurality of connector members are connected to the connector housing, and the connector housing is provided with a plurality of mounting holes in a lattice shape, each connector member is provided with a tubular portion, and the tubular portion is used as the mounting hole. In the connector member connection structure to be inserted, each connector member is provided with an extension portion extending outward in the radial direction of the tubular portion, and in the connector members arranged adjacent to each other, each extension portion The fitting portions can be fitted when the types and postures of the adjacent connector members are correct, but the types of the adjacent connector members and / or Alternatively, when the posture is not correct, it is formed so as not to be fitted, and the extension part of the at least one connector member and the connector housing are paired with each other. If the protrusions and recesses are provided and the position and orientation of the connector member with respect to the connector housing are correct, the protrusions and recesses can be assembled correspondingly, but the position and / or orientation of the connector member with respect to the connector housing. In the connector member connecting structure, when the protrusion is not correct, the convex portion interferes with the connector housing or the extension portion to inhibit assembly (first invention).

In the first invention, of the connector members adjacent to each other, when the tubular portion of one of the connector members is opposite in the axial direction, the fitting portion is not fitted and the assembly is inhibited. Is preferred (second invention). In the first aspect of the invention, it is preferable that the concave portion and the convex portion interfere with assembly by the convex portion interfering when the tubular portion of the connector member is opposite in the axial direction. 3 invention). Moreover, in the 1st invention, it is preferable that the fitting part of each connector member is formed so that it may not fit between the same kind of connector members (4th invention).

According to the connector member connection structure (the first invention) of the present invention, an effect of suppressing / preventing erroneous assembly of the connector member can be obtained with a simple configuration in which a fitting portion and a convex portion / concave portion are provided.

Furthermore, if it is made like 2nd invention or 3rd invention, it can also prevent that a connector member is attached in the opposite direction. Moreover, if it is made like 4th invention, it can prevent more reliably that the kind of connector member which should be assembled | attached is incorrect.

It is the front view and sectional drawing which show the connector member connection structure of 1st Embodiment of this invention. It is the front view and sectional drawing which show the structure of the connector housing in 1st Embodiment. It is the front view and sectional drawing which show the structure of the 1st connector member in 1st Embodiment. It is the front view and sectional drawing which show the structure of the 2nd connector member in 1st Embodiment. It is a figure which shows the condition where the fitting part of a 1st connector member and a 2nd connector member is not fitting. It is a figure which shows the condition where the convex part of the connector housing and the extension part of the 1st connector member interfered. It is sectional drawing which shows the example of other embodiment of a fitting part. It is a figure which shows the other example of a form which a connector member mutually fits. It is a figure which shows further another example of embodiment of this invention. It is a figure which shows other example of embodiment of the convex part and recessed part in this invention. It is a figure which shows the example of a connector housing and the connector member connection structure by a prior art. It is a figure which shows the structure of the 1st connector member and the 2nd connector member in the example by a prior art. It is a figure which shows the example of the incorrect assembly | attachment of the connector member in the example by a prior art.

Hereinafter, embodiments of the present invention will be described with reference to the drawings, taking a liquid delivery system as an example. The present invention is not limited to the individual embodiments shown below, and can be carried out by changing the form. Examples of the liquid delivery system include a system for delivering appropriate amounts of undiluted beverages, water and hot water from beverage vending machines, a collective branch piping system for collecting and distributing liquids, and a hydraulic device including a control valve. . The delivery system may deliver gas.

In these delivery systems, the connector member is used at a location where various pipes (for example, rubber tubes) are connected to a control valve or the like. As shown in FIG. 1, one end (tubular portion) of the connector members 1 and 2 is inserted into and connected to the connector housing 3 (for example, a control valve body). And piping (not shown), such as a rubber tube, is connected to the other end side of a connector member, and the pipe line and piping in a connector housing are connected, and a series of liquid delivery systems are comprised.

Here, the connector housing is a member to be connected (object to be connected) to which a plurality of connector members are connected. Examples of the connector housing include an assembly / branch member of piping, a control valve and a dispenser for controlling the flow, and the like. The structure of the connector housing 3 in this embodiment is shown in FIG. In FIG. 1 and FIG. 2, the connector housing 3 is shown in a simplified manner only in the vicinity of the portion to which the connector member is connected, and the other parts and detailed structure are not shown. The same applies to other figures.

The connector housing 3 is provided with a plurality of (four in this embodiment) mounting holes H1, H2, H3, and H4 into which a connector member is inserted in a lattice shape. In the present embodiment, the holes H1, H2, H3, and H4 are arranged in a square shape. That is, the pitch P1 between the holes H1 and H2, the pitch P2 between the holes H3 and H4, and the pitch P3 between the holes H2 and H4 are substantially the same. Each of these holes communicates with a conduit for sending a liquid inside the connector housing.

The connector housing 3 is provided with a convex portion 31. The convex portion 31 is provided so as to protrude along the direction in which the connector members 1 and 2 are inserted. As will be described later, the convex portion 31 plays a role of preventing erroneous assembly. In this embodiment, the convex part 31 is provided in the column shape (pin shape). The convex portion may be other prismatic shape, plate shape, cylinder shape, or block shape.

In the present embodiment, two types of connector members, that is, the first connector member 1 and the second connector member 2 are connected to the connector housing 3. FIG. 3 shows the shape of the first connector member 1 and FIG. 4 shows the shape of the second connector member 2. For example, the connector members 1 and 2 can be members formed by injection molding of synthetic resin.

The first connector member 1 has tubular portions 12 and 12. The tubular portion 12 is a portion inserted into the hole of the connector housing. In the present embodiment, the first connector member 1 is provided with two tubular portions, and two pipe lines can be connected. The tubular portions 12, 12 are provided at intervals corresponding to the pitch P1 of the holes provided in the connector housing 3. Connection portions 13a and 13b are provided on the opposite side of the tubular portion. The inside of the tubular part and the connection part are connected as a pipe line. When connecting a pipe to the first connector member 1, it is connected to the connecting portions 13 a and 13 b.

An extending portion 11 is provided so as to connect the tubular portions 12 and 12 and the connecting portions 13a and 13b, and the first connector member 1 is formed in a substantially H shape. The extending portion 11 is a portion that extends from the outer periphery of the tubular portion 12 toward the radially outer side of the tubular portion. In the present embodiment, the extending portion is provided in a plate shape that is orthogonal to the axis of the tubular portion.

Similarly to the first connector member 1, the second connector member 2 has two tubular portions 22 and 22, connection portions 23 a and 23 b, and an extension portion 21, and is formed in a substantially H shape.

As shown in FIG. 1, the first connector member 1 and the second connector member 2 are connected to the connector housing 3 in a state where they are aligned. And in these connector members 1 and 2 arrange | positioned adjacently, a part of each extension part 11 and 21 is made into the fitting part which can mutually be fitted.

That is, in this embodiment, the fitting convex piece 11a protrudes outward on one side edge (the right side edge in FIG. 3 front view) of the extending portion 11 of the first connector member 1. In addition to being provided, a fitting recess 11c is provided, and this portion is a fitting portion. On the other hand, a fitting recess 21b and a fitting convex piece 21a are provided on one side edge (the left side edge in the front view of FIG. 4) of the extending portion 21 of the second connector member 2, and this portion. Is a fitting part.

When the connector members 1 and 2 are arranged adjacent to each other and connected, the fitting convex piece 11a and the fitting concave part 21b are fitted, and the fitting concave part 11c and the fitting convex piece 21a are fitted, respectively. The pitch between the tubular portion 12 of the first connector member 1 and the tubular portion 22 of the second connector member 2 becomes a predetermined interval (P3), and the connector housing 3 can be assembled.

When the fitting part provided in the extension part (the fitting part having a fitting convex piece or a fitting recess in this embodiment) is the correct type and posture of the first connector member 1 and the second connector member. When the type is wrong or the posture is wrong, it is provided so as not to be fitted.

Further, in the present embodiment, the projecting piece 11b protrudes outward from the extending portion 11 of the first connector member 1 on the side opposite to the side where the fitting projecting piece 11a and the fitting recess 11c are provided. It is provided as follows. Further, on the opposite side of the extending portion 21 of the second connector member 2 where the fitting convex piece 21a and the fitting concave portion 21b are provided, neither the convex piece nor the concave portion is provided, and the extending portion is substantially straight. It is made into a shape.

By forming the extending portions 11 and 21 of the connector member in this way, for example, as shown in FIG. 5, the posture of the second connector member is opposite to the correct posture (opposite around the axis of the tubular portion). That is, even if it is going to be attached upside down in FIG. 5, the gap PF between the tubular portion 12 of the first connector member 1 and the tubular portion 22 of the second connector member 2 is interfered by the fitting convex piece 11a. Becomes larger and cannot be assembled to the connector housing 3 in which the pitch of the mounting holes is set to P3, thereby preventing erroneous assembly. Similarly, when another posture error is about to occur, the fitting convex piece 11a, the fitting convex piece 21a, and the convex piece 11b interfere with each other and inhibit assembly.

The specific shape of the fitting part is not particularly limited. Whether or not the fitting portion can be fitted can be set according to the position or interval at which the fitting convex piece or fitting recess is provided. Alternatively, the fitting part can be fitted according to the shape of the fitting convex piece or fitting recess (triangular, quadrangular, semicircular shape, etc.) or according to the size or number of the fitting convex piece or fitting concave. Possible / impossible can be set. These can be combined as appropriate so that they can be fitted when the type and orientation of the adjacent connector members are correct, but should not be fitted when the type and / or posture of the adjacent connector members are incorrect. Good.

Furthermore, in the present embodiment, the concave portion 21x is formed in the connector member extending portion (in the present embodiment, the extending portion 21 of the second connector member 2) corresponding to the convex portion 31 provided in the connector housing 3. Is provided.

As shown in FIG. 1, when the connector members 1 and 2 are assembled to the connector housing 3 with the correct arrangement and posture as shown in FIG. It is provided in pairs. On the other hand, as shown in FIG. 6, when the connector members 1 and 2 that are fitted and combined are rotated by 90 degrees around the axis of the tubular portion (clockwise) and are about to be assembled to the connector housing 3, The protrusion 31 and the extension portion 11 of the first connector member interfere with each other, and the first connector member 1 cannot be inserted all the way into the back. Assembly can be prevented.

Thus, according to the connector member connection structure of the first embodiment, the connection portions 13a, 13b, 23a, and 23b are connected to the mounting holes H1, H2, H3, and H4 of the connector housing 3, respectively. The correct connector member connection is realized. If any other wrong assembly is attempted, such assembly is hindered and misassembly is prevented.

The convex part and concave part can be assembled without interference in the case of the correct position and posture, and in the case of the wrong position or posture, the convex part interferes and obstructs the assembly and detects misassembly. If possible, the specific form is not particularly limited. For example, in the above-described embodiment, the example in which the convex portion 31 is provided in the connector housing 3 and the concave portion 21x is provided in the extending portion 21 of the second connector member 2 has been described, but the convex portion is provided on the connector member extending portion side. A recess may be provided on the connector housing side. Moreover, a convex part and a recessed part are provided only in the one part connector member, and do not need to be provided in the other connector member.

As described above, the specific form of the convex portion can be a pin shape, a pillar, a cylinder shape, a plate shape, a block shape, or the like. The specific form of the recess may be a form in which the peripheral edge of the extension part is cut out as in the above embodiment, and a through hole, a hole having a predetermined depth (bottomed hole), a groove It may be. Further, the extending portion of the connector member is constituted by a portion formed to extend outward to the extent that it can interfere with the convex portion, and a portion that extends outward only to the extent that it does not interfere with the convex portion, A portion that extends outward only to the extent that it does not interfere with the latter convex portion can be used as the concave portion (for example, an example of FIG. 9 described later).

The operation and effect of the above embodiment will be described.
The 1st connector member and the 2nd connector member are made into the fitting part which has a shape which a part of each extension part 11 and 21 can mutually fit. The fitting portion can be fitted when the type and posture of the adjacent connector member is correct, but is not fitted when the type and / or posture of the adjacent connector member is incorrect. As a result, most of the possibility of errors in the order and orientation between the connector parts can be eliminated.

And since the extension part and connector housing of the at least 1 connector member are provided with the convex part and the recessed part which make a pair mutually, the 1st connector member 1 and the 2nd connector member 2 which were combined together are provided. , Most of the possibility of mounting in the wrong posture can be eliminated.
Therefore, according to the connector member connection structure of the above-described embodiment, erroneous assembly of the connector member can be effectively suppressed / prevented only by adding simple configurations such as a fitting portion and a convex concave portion.

Furthermore, in the said embodiment, the convex piece 11b is also provided in one edge of the extension part 11 of the 1st connector member 1, and the fitting convex piece 11a and the fitting recess 11c are provided in the other edge. Are provided, and both end edges have different shapes that do not fit each other. And the form of the fitting part of the extension part of the 1st connector member 1 is also formed so that it may not fit in the fitting parts of the 1st connector member. If it does in this way, the incorrect assembly | attachment which will assemble | attach 1st connector members can also be prevented.

The present invention is not limited to the above embodiment, and can be implemented with various modifications. Other embodiments of the present invention will be described below. However, in the following description, portions different from the above embodiment will be mainly described, and detailed descriptions of the same portions will be omitted. In addition, the embodiments described below can be implemented by combining some of them or replacing some of them.

In FIG. 7, the modification of the fitting part provided in a connector member extension part is shown. In the said 1st Embodiment, although the fitting part was provided so that it might have a straight end surface parallel to the axial direction of the tubular parts 12 and 22, a fitting part differs in the modification shown in FIG. It has an end face shape.

In the modification shown in FIG. 7 (a), in the fitting portion where the extended portion 41 of the first connector member 4 and the extended portion 51 of the second connector member 5 are fitted to each other when they are arranged adjacent to each other, The fitting portion is fitted between the inclined surfaces inclined with respect to the axial direction of the tubular portions 42 and 52. Moreover, in the modification shown in FIG.7 (b), when the extension part 61 of the 1st connector member 6 and the extension part 71 of the 2nd connector member 7 are arrange | positioned adjacently, the fitting part which mutually fits In the above, the fitting part is fitted between the surfaces having steps formed in a stepped shape.

When the fitting portion has such a configuration, one of the tubular portions of the connector member is in the opposite direction (where the tubular portion should be on the lower side in FIG. 7 and the tubular portion is on the upper side). In this case, the fitting part does not fit. In this case, since the distance between the first connector member and the second connector member is wider than the expected distance, both cannot be assembled to the connector housing, and erroneous assembly is prevented.

FIG. 8 shows still another modification. In the embodiment shown in FIG. 8, the connector housing is provided with six mounting holes in a lattice shape.
In such a case, as shown in FIG. 8A, a connector similar to the first embodiment is used by using three types of connector members 81, 82, 83 each having two tubular portions and two connecting portions. It can be set as a member connection structure. That is, a part of the extending part of the first connector member 81 and the second connector member 82 is a first fitting part, and a part of the extending part of the second connector member 82 and the third connector member 83 is a second fitting part. Only when the first fitting portion and the second fitting portion are well fitted, the three connector members can be relatively arranged in the correct order and interval. Preferably, as shown in the present embodiment, it is preferable to change the fitting shapes of the first fitting portion and the second fitting portion. In the present embodiment, the connector housing 81 is provided with a pin-like convex portion 31, and a concave portion (through hole 81 x) corresponding to the convex portion 31 is provided in the extending portion of the connector member 81. , 82 and 83 are assembled correctly.

Moreover, even if the connector members 82 and 83 are erroneously attached to the position where the connector member 81 is to be attached by the pin-shaped convex portion 31, the attachment is hindered and it can be detected that the assembly is incorrect. .

Further, as shown in FIG. 8B, a connector member connection structure similar to that of the first embodiment can be obtained by using two types of connector members 84 and 85 each having three tubular portions and three connection portions. it can. When a part of the extension part of the adjacent first connector member 84 and the second connector member 85 is a fitting part and the fitting part fits well, the two connector members 84 and 85 are correctly combined and spaced apart. Can be arranged relatively. In the present embodiment, a cylindrical convex portion 32 is provided in the connector housing, and a concave portion (notch 84 x) corresponding to the convex portion 32 is provided in the extending portion of the connector member 84.

FIG. 9 shows another example of the embodiment. This embodiment differs in the shape of the extension part compared with 1st Embodiment. In the present embodiment, the extending portions of the connector members 86 and 87 have a portion that projects outwardly from the tubular portion (a relatively retracted portion) and a portion that projects outwardly from the tubular portion (relative). Projecting portions 861, 862, 871). And the pin-shaped convex part 31 is provided in the area | region which becomes an outer side rather than the relatively retracted part of the connector member extension part in the connector housing. Further, the relatively projecting portions 861, 862, 871 of the extension portions are projected when the combined connector members 86, 87 are misassembled by rotating around the axial direction of the tubular portion. It is provided at a position where it interferes with 31. Such a configuration also prevents erroneous assembly of the connector member. In the present embodiment, the relatively retracted portion of the extending portion corresponds to the recess 21x in the first embodiment.

FIG. 10 shows still another embodiment example. This embodiment is different from the first embodiment in that the concave portion provided in the extending portion is a hole (bottomed hole) having a predetermined depth. Also in the present embodiment, when the connector members 88 and 89 are assembled in the correct arrangement and posture, the pin-like convex portion 31 provided in the connector housing and the bottomed portion provided in the extending portion 891 of the connector member 89 are provided. The holes fit and fit together, and the assembly is successful.

On the other hand, in this embodiment, the connector member 89 is extended when the tubular portion 892 is attached in the opposite direction (in FIG. 10, the portion where the tubular portion 892 should originally be on the lower side is on the upper side). Since the concave portion provided in the portion is a bottomed hole, the convex portion 31 interferes with the extending portion 891, the assembly is inhibited, it can be detected that the assembly is incorrect, and the erroneous assembly can be prevented. . That is, when providing a recessed part in the extension part of a connector member, if it is set as the recessed part (for example, groove | channel or bottomed hole) of the form which is not penetrated, a connector member will be assembled | attached so that a tubular part may become the opposite direction. Misassembly can be prevented more effectively.

The number of tubular portions and connection portions of the connector member may be two or three as shown in the above embodiment, but is not particularly limited thereto, and may be one or four or more. May be. When a plurality of tubular portions and connection portions are provided on the connector member, it is preferable that the tubular portions and connection portions are arranged along one plane.

The convex portion and the concave portion provided in a pair on the connector housing and the connector member may be provided so as to have one convex portion as shown in the above embodiment, but two or more convex portions are provided. You may make it have. That is, it is sufficient that at least one convex portion is provided.

The specific shape of the tubular portion of the connector member inserted into the connector housing is not particularly limited, and appropriately includes a ring portion for fixing, a claw, a notch, a seal member, a lock mechanism, or the like. You may let them. Moreover, what is necessary is just to make the specific shape of the connection part on the opposite side to the tubular part of a connector member into the shape matched with piping which should be connected to a connection part.

The present invention is not limited to the technical field described in the above embodiment, and can be applied to various technical fields such as a piping system for sending gas and a pressure transmission system.

The connector member connection structure of the present invention can be used, for example, in a liquid delivery system, can prevent erroneous assembly of the connector member, and has high industrial utility value.

DESCRIPTION OF SYMBOLS 1 1st connector member 11 Extension part 11a Fitting convex piece 11b Protruding piece 11c Fitting recess 12 Tubular part 13a, 13b Connection part 2 2nd connector member 21 Extension part 21a Fitting convex piece 21b Fitting recess 21x Concave part 22 Tubular part 23a, 23b Connection part 3 Connector housing 31 Convex part H1, H2, H3, H4 Mounting hole

Claims (4)

A connector in which a plurality of connector members are connected to the connector housing and a plurality of mounting holes are provided in a lattice shape in the connector housing, each connector member is provided with a tubular portion, and the tubular portion is inserted into the mounting hole A member connection structure,
Each connector member is provided with an extending portion extending radially outward of the tubular portion,
In the connector members arranged adjacent to each other, a part of each extending portion is a fitting portion that can be fitted to each other,
The fitting portion can be fitted when the type and posture of the adjacent connector member is correct, but is formed so as not to be fitted when the type and / or posture of the adjacent connector member is incorrect. And
And,
The extension part of the at least one connector member and the connector housing are provided with a convex part and a concave part to make a pair with each other,
When the position and posture of the connector member with respect to the connector housing are correct, the convex portion and the concave portion can be assembled correspondingly. However, when the position and / or posture of the connector member with respect to the connector housing is incorrect, the convex portion is Interfering with the connector housing or the extension to prevent assembly
Connector member connection structure. 2. The connector member connection structure according to claim 1, wherein when the tubular portion of one of the connector members adjacent to each other is opposite in the axial direction, the fitting portion does not fit and hinders assembly. . The connector member connection structure according to claim 1, wherein when the tubular portion of the connector member is opposite in the axial direction, the concave portion and the convex portion interfere with assembly by the convex portion interfering with each other. The connector member connection structure according to any one of claims 1 to 3, wherein the fitting portions of the respective connector members are formed so as not to be fitted between the same types of connector members.

Images