CN118042749A - Shell body - Google Patents

Abstract

The invention provides a housing capable of inhibiting half-engagement caused by position deviation. The housing (1) is provided with: a first housing having a side wall portion extending in a first direction (X), a plurality of first claw portions (25) arranged on the side wall portion in the first direction, and a plurality of protruding portions (26) corresponding to the plurality of first claw portions; and a second housing (3) having a plurality of first locking portions (35) for locking the plurality of first claw portions and a plurality of hole portions into which the plurality of protruding portions are inserted, wherein the second housing (3) is fitted to the first housing to form a housing space for housing the electric wire, the protruding portions protrude in an engagement direction Z in which the first claw portions are engaged with the first locking portions, and have side surfaces (26 d) facing the first direction, the side surfaces being inclined with respect to the engagement direction so that the width of the protruding portions in the first direction becomes narrower as the width of the protruding portions becomes narrower toward the distal ends of the protruding portions, and the side surfaces guide the protruding portions into the hole portions, thereby positioning the first claw portions (25) at positions in which the first locking portions (35) are engageable.

Description

Shell body

Technical Field

The present invention relates to a housing.

Background

Conventionally, there is a case for accommodating an electric wire. Patent document 1 discloses a surplus length absorbing housing that absorbs surplus length of a wire harness connected to a slide seat. A locking frame which is locked with a locking piece arranged on the peripheral wall of the cover is arranged on the peripheral wall of the main body of the surplus length absorbing shell.

Prior art literature

Patent literature

Patent document 1: japanese patent application laid-open No. 2017-022806

Disclosure of Invention

Technical problem to be solved by the invention

Due to expansion and contraction of the case, deviation of the case, and the like caused by heat, there is a case where a positional deviation occurs between a pair of engagement portions engaged with each other. In the case where a plurality of engagement portions are arranged in a linear direction in the housing, it is preferable that the occurrence of half engagement due to positional displacement be suppressed.

The invention aims to provide a shell capable of inhibiting half-engagement caused by position deviation.

Means for solving the problems

The housing of the present invention is characterized by comprising: a first housing having: a side wall portion extending in a first direction; a plurality of first claw portions arranged on the side wall portion in the first direction; and a plurality of protrusions corresponding to the plurality of first claw portions; and a second housing having: a plurality of first locking portions for locking the plurality of first claw portions; and a plurality of hole portions into which the plurality of protruding portions are inserted, wherein the second housing is fitted to the first housing to form a housing space for housing the electric wire, wherein the protruding portions protrude in an engagement direction in which the first claw portions are engaged with the first locking portions, and have side surfaces facing the first direction, wherein the side surfaces are inclined with respect to the engagement direction so that a width of the protruding portions in the first direction becomes narrower toward a distal end of the protruding portions, and wherein the side surfaces guide the protruding portions into the hole portions, thereby positioning the first claw portions at positions in which the first claw portions are engageable with the first locking portions.

Effects of the invention

In the case according to the present invention, the side surface of the protruding portion of the first case is guided into the hole portion of the second case, whereby the first claw portion of the first case is positioned at a position where the first claw portion of the second case can be engaged with the first locking portion of the second case. According to the housing of the present invention, the occurrence of half engagement due to positional displacement can be suppressed.

Drawings

Fig. 1 is a perspective view of a housing according to an embodiment.

Fig. 2 is an exploded perspective view of the case according to the embodiment.

Fig. 3 is a perspective view of the first housing according to the embodiment.

Fig. 4 is a side view of the first housing according to the embodiment.

Fig. 5 is a cross-sectional view of the first housing according to the embodiment.

Fig. 6 is a perspective view of the second housing according to the embodiment.

Fig. 7 is a perspective view of the first locking portion and the hole portion according to the embodiment.

Fig. 8 is a plan view of the first locking portion and the hole portion according to the embodiment.

Fig. 9 is a cross-sectional view of a housing according to an embodiment.

Fig. 10 is a side view of a housing according to an embodiment.

Fig. 11 is a cross-sectional view of a housing according to an embodiment.

Description of the reference numerals

1: Shell body

2: First housing, 2a: first end, 2b: second end portion

3: Second housing, 3a: first end, 3b: second end portion

4. 4A, 4B, 4C, 4D, 4E: locking structure

5: Locking structure

20: Concave part

21: Main wall, 22: peripheral walls, 22a, 22b: side wall portions 22c, 22d: arc wall part

23. 23A, 23B, 23C, 23D, 23E: engagement portion, 24: engagement portion

25: First claw portion, 25a: abutment surface, 25b: inclined surface

26: Convex portion, 26a: base, 26b: end portion, 26c: inclined surface, 26d: side surface

31: Main wall, 32: peripheral walls, 32a, 32b: side wall portions, 32c, 32d: arc wall part

33. 33A, 33B, 33C, 33D, 33E: engagement portion, 34: second locking part

35: First locking portions, 35a: locking surface, 35b: opposed surface

36: Hole portion, 36a: opposed surface

Wd: width of the convex part, we: width of hole

X: first direction, Y: second direction, Z: engagement direction

Θ: inclination angle

Detailed Description

Hereinafter, a case according to an embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment. The constituent elements in the embodiments described below include elements that can be easily recognized by those skilled in the art or substantially the same elements.

Embodiment(s)

An embodiment will be described with reference to fig. 1 to 11. The present embodiment relates to a housing. Fig. 1 is a perspective view of a housing according to an embodiment, fig. 2 is an exploded perspective view of a housing according to an embodiment, fig. 3 is a perspective view of a first housing according to an embodiment, fig. 4 is a side view of a first housing according to an embodiment, fig. 5 is a cross-sectional view of a first housing according to an embodiment, fig. 6 is a perspective view of a second housing according to an embodiment, fig. 7 is a perspective view of a first locking portion and a hole portion according to an embodiment, fig. 8 is a top view of a first locking portion and a hole portion according to an embodiment, fig. 9 is a cross-sectional view of a housing according to an embodiment, fig. 10 is a side view of a housing according to an embodiment, and fig. 11 is a cross-sectional view of a housing according to an embodiment. Fig. 5 shows the V-V section of fig. 4.

As shown in fig. 1 and 2, the case 1 of the present embodiment includes a first case 2 and a second case 3. The first case 2 and the second case 3 are molded, for example, from insulating synthetic resin. The housing 1 is configured to house an electric wire, and is a protector for protecting the electric wire for power supply. The housing 1 is coupled to a rail of a vehicle, for example. In this case, the electric wire led out from the housing 1 is disposed on a slide rail and connected to a sliding body such as a slide seat.

The case 1 is substantially rectangular in shape in plan view. In this specification, the longitudinal direction of the housing 1 is referred to as a first direction X. The direction orthogonal to the first direction X in a plan view is referred to as a second direction Y. The second direction Y is the width direction of the housing 1. The direction orthogonal to both the first direction X and the second direction Y is referred to as an engagement direction Z. The engagement direction Z is a direction in which the first casing 2 and the second casing 3 are engaged.

The first housing 2 and the second housing 3 are engaged by a plurality of locking structures 4 and 5. The plurality of locking structures 4 are aligned along the first direction X. The housing 1 of the present embodiment is configured such that the lock structure 4 can be engaged even when the first housing 2 and the second housing 3 expand and contract due to heat or the like.

As shown in fig. 2, the first housing 2 has a recess 20 that accommodates the electric wire. In more detail, the first housing 2 has a flat plate-shaped main wall 21 and a peripheral wall 22 surrounding the main wall 21. The peripheral wall 22 is provided to stand from the edge of the main wall 21 in the engagement direction Z. The recess 20 is a space portion formed by the main wall 21 and the peripheral wall 22. The peripheral wall 22 has a pair of side wall portions 22a, 22b extending in the first direction X. The pair of side wall portions 22a, 22b face each other in the second direction Y.

The peripheral wall 22 has arcuate wall portions 22c and 22d curved in the first direction X. The circular arc wall 22c is disposed at the first end 2a of the first housing 2, and the circular arc wall 22d is disposed at the second end 2b of the first housing 2. The first end 2a is one end of the first housing 2 in the first direction X. The second end 2b is the other end of the first housing 2 in the first direction X.

A plurality of engaging portions 23 are arranged along the first direction X in the side wall portions 22a, 22b, respectively. In the first case 2 of the example, five engaging portions 23 are provided on the side wall portions 22a, 22b, respectively. In the following description, when five engaging portions 23 are distinguished, the engaging portions 23A, 23B, 23C, 23D, and 23E are referred to in order from the first end portion 2a side to the second end portion 2B side. The five engaging portions 23 are arranged at equal intervals along the first direction X. An engagement portion 24 is provided at the first end 2a of the first housing 2. Further, no engaging portion is provided at the second end 2b of the first housing 2. In other words, the engagement portion 23E of the plurality of engagement portions 23, 24 provided in the first housing 2 is an engagement portion located on the side of the second end portion 2b most in the first direction X.

The second housing 3 is substantially rectangular in shape in plan view. The second housing 3 is fitted to the first housing 2 to form an accommodating space for accommodating the electric wire. The second housing 3 has a flat plate-like main wall 31 and a peripheral wall 32 surrounding the main wall 31. The peripheral wall 32 is provided to stand from the edge of the main wall 31 in the engagement direction Z. When the housing 1 is mounted on a vehicle, the main wall 21 and the main wall 31 face each other in the vehicle vertical direction. Therefore, one of the main walls 21 and 31 becomes a top wall located on the upper side, and the other becomes a bottom wall located on the lower side. The main wall 31 closes the recess 20 of the first housing 2, forming an accommodation space accommodating the electric wire.

The peripheral wall 32 has a pair of side wall portions 32a, 32b extending in the first direction X. One side wall portion 32a is opposed to the side wall portion 22a of the first casing 2. The other side wall portion 32b is opposed to the side wall portion 22b of the first casing 2. The pair of side wall portions 32a, 32b face each other in the second direction Y. The peripheral wall 32 has circular arc wall portions 32c, 32d curved in the first direction X. The circular arc wall portion 32c is disposed at the first end portion 3a of the second housing 3, and the circular arc wall portion 32d is disposed at the second end portion 3b of the second housing 3. The first end 3a corresponds to the first end 2a of the first housing 2, and the second end 3b corresponds to the second end 2b of the first housing 2.

A plurality of engaging portions 33 are arranged along the first direction X in the side wall portions 32a, 32b, respectively. In the second case 3 of the example, five engaging portions 33 are provided on the side wall portions 32a, 32b, respectively. The five engaging portions 33 are arranged at equal intervals. In the following description, when five engaging portions 33 are distinguished, engaging portions 33A, 33B, 33C, 33D, and 33E are referred to in order from the first end portion 3A side to the second end portion 3B side. The lock structure 4 is constituted by the engagement portion 23 of the first housing 2 and the engagement portion 33 of the second housing 3. The second housing 3 is provided with a second locking portion 34 at the first end portion 3 a. The lock structure 5 is constituted by the engagement portion 24 of the first housing and the second engagement portion 34 of the second housing 3.

As shown in fig. 3, each engagement portion 23 of the first housing 2 has one first claw portion 25 and one protruding portion 26. The first claw portion 25 is provided on the outer side surface of the side wall portions 22a, 22b, and is disposed at the end portion of the side wall portions 22a, 22b in the engaging direction Z. The first claw portion 25 protrudes from the side wall portions 22a, 22b in the second direction. As shown in fig. 5, the first claw portion 25 has a substantially triangular shape in a cross section orthogonal to the first direction X. The protruding amount of the first claw portion 25 with respect to the side wall portions 22a, 22b becomes smaller as it moves away from the main wall 21 along the engaging direction Z.

The first claw portion 25 has an abutment surface 25a and an inclined surface 25b. The contact surface 25a is a surface that is engaged by the engagement portion 33 of the second housing 3. The abutment surface 25a faces the main wall 21 side. The inclined surface 25b is a surface facing the second direction Y, and is inclined with respect to the engagement direction Z. More specifically, the inclined surface 25b is inclined so as to be away from the side wall portions 22a, 22b as approaching the main wall 21 in the engagement direction Z.

The protruding portion 26 is disposed corresponding to the first claw portion 25. More specifically, the protruding portion 26 is arranged side by side with the first claw portion 25 in the engaging direction Z, and is arranged on the opposite side of the main wall 21 side with respect to the first claw portion 25. As shown in fig. 4, the convex portion 26 provided on the side wall 22b is formed so that the end surface of the side wall 22b in the engagement direction Z bulges in the engagement direction Z. Similarly, the convex portion 26 of the side wall portion 22a is formed so as to bulge the end surface of the side wall portion 22 a. The convex portion 26 has a base portion 26a and a tip portion 26b. The base portion 26a is a portion connected to the side wall portions 22a, 22 b. The distal end 26b is the distal end of the protruding portion 26 in the protruding direction.

The inclined surface 25b of the first claw portion 25 is connected to the base portion 26a of the convex portion 26. As shown in fig. 5, the shape of the convex portion 26 as viewed from the first direction X is a tapered shape. The convex portion 26 is formed such that the thickness in the second direction Y becomes smaller toward the distal end portion 26 b. The convex portion 26 has an inclined surface 26c continuous with the inclined surface 25b of the first claw portion 25.

As shown in fig. 5, the engaging portion 23 of the side wall portion 22a and the engaging portion 23 of the side wall portion 22b face each other in the second direction Y. The shape of the engaging portion 23 of the side wall portion 22a is the same as the shape of the engaging portion 23 of the side wall portion 22 b.

As shown in fig. 4, the convex portion 26 has a side surface 26d facing the first direction X. In the first housing 2 of the present embodiment, the side surface 26D is inclined with respect to the engaging direction Z in the convex portions 26 of the engaging portions 23B, 23C, 23D, 23E. On the other hand, in the convex portion 26 of the engagement portion 23A closest to the first end portion 2a, the side surface 26d is parallel to the engagement direction Z. That is, in the engaging portion 23A near the first end portion 2a, the side surface 26D is not inclined with respect to the engaging direction Z, and in the other engaging portions 23B, 23C, 23D, 23E, the side surface 26D is an inclined surface to be introduced. The inclined side surface 26d is inclined with respect to the engagement direction Z so that the width Wd of the protruding portion 26 becomes narrower toward the distal end of the protruding portion 26. The width Wd is the width of the convex portion 26 in the first direction X. The side surface 26d of the engaging portion 23A may be inclined with respect to the engaging direction Z.

The side surface 26d has an inclination angle θ with respect to the engagement direction Z. In the case 1 of the present embodiment, the inclination angle θ becomes larger as it moves away from the first end 2a along the first direction X. The side surface 26d of the engaging portion 23B has an inclination angle θb. Similarly, the side surfaces 26D of the engaging portions 23C, 23D, 23E have inclination angles θc, θd, θe, respectively. These inclination angles are determined by the following expression (1).

θb<θc<θd<θe (1)

The setting of the inclination angle θ is an example. The value of the inclination angle θ of each engagement portion 23B, 23C, 23D, 23E is determined based on the coefficient of thermal expansion of the first housing 2 and the coefficient of thermal expansion of the second housing 3.

As shown in fig. 3, the engaging portion 24 has a second claw portion 27 and a convex portion 28. The second claw portion 27 protrudes from the outer side surface of the circular arc wall portion 23c in the second direction Y. The cross-sectional shape of the second claw portion 27 is the same as the cross-sectional shape of the first claw portion 25. The convex portion 28 protrudes from the end surface of the circular arc wall portion 23 c. The shape of the protruding portion 28 is the same as the shape of the protruding portion 26 of the engaging portion 23A.

As shown in fig. 6, the engagement portion 33 of the second housing 3 is provided at a corner where the main wall 31 intersects with the side wall portions 32a, 32 b. The engaging portion 33 is formed by cutting off the corner portion. As shown in fig. 7 and 8, the engaging portion 33 includes a first engaging portion 35 for engaging the first claw portion 25 and a hole portion 36 into which the protruding portion 26 is inserted.

The first locking portion 35 is formed to penetrate the side wall portions 32a, 32 b. The first locking portion 35 is rectangular in shape when viewed from the front view as viewed from the second direction Y. The first locking portion 35 has a locking surface 35a and a pair of opposed surfaces 35b. The locking surface 35a is a surface for locking the first claw portion 25 of the first housing 2. The engagement surface is a surface facing the engagement direction Z, and faces the main wall 31 side.

The opposing surface 35b extends from the locking surface 35a toward the main wall 31 side along the engagement direction Z. The pair of opposed faces 35b are opposed to each other in the first direction X. The end of the first locking portion 35 on the main wall 31 side is open.

The hole 36 is formed through the main wall 31. The hole 36 is rectangular in shape when viewed from the engaging direction Z. The hole 36 has a pair of opposed faces 36a. The facing surface 36a extends from the facing surface 35b of the first locking portion 35 in the second direction Y. As shown in fig. 8, the hole 36 is formed further toward the rear side in the second direction Y than the inner side surface 32i of the peripheral wall 32. The engaging portion 23 of the first housing 2 is inserted into the engaging portion 33 along the inner side surface 32 i. The width of the hole 36 in the second direction Y is designed to be able to receive the protruding portion 26 of the engaging portion 23. The opposing surfaces 35b, 36a are located on the same plane orthogonal to the first direction X. The shape of the engaging portion 33 of the side wall portion 32a is the same as the shape of the engaging portion 33 of the side wall portion 32 b.

Fig. 8 shows a width We of the hole 36 in the first direction X. The width We of the hole 36 is determined to be able to accept the boss 26. In the case 1 of the present embodiment, the width We of the hole 36 increases as it moves away from the first end 3a along the first direction X. The value of the width We of each engagement portion 33A, 33B, 33C, 33D, 33E is determined based on the coefficient of thermal expansion of the first case 2 and the coefficient of thermal expansion of the second case 3.

As shown in fig. 6, the second locking portion 34 is provided in the circular arc wall portion 32c. The second locking portion 34 bulges in the first direction X. The second locking portion 34 has a rectangular frame shape for locking the second claw portion 27 of the first housing 2.

The engagement process of the first casing 2 and the second casing 3 will be described. The engagement step is a step of engaging the engagement portions 24 of the first housing 2 with the second engagement portions 34 of the second housing 3 and engaging the engagement portions 23 of the first housing 2 with the engagement portions 33 of the second housing 3. In the engagement step, first, the second claw portion 27 of the engagement portion 24 is engaged with the second engagement portion 34 by the operator. That is, the locking structure 5 disposed at the first ends 2a, 3a is first brought into an engaged state. Next, the engaging portion 23A near the first end portion 2a is engaged with the corresponding engaging portion 33A. Further, the engaging portions 33B, 33C, 33D, and 33E are engaged with each other in this order from the side near the first end portions 2a and 3a, and the engaging portions 23B, 23C, 23D, and 23E.

Fig. 9 shows the engaging portion 23B when engaged with the engaging portion 33B. The position of the protruding portion 26 with respect to the hole 36 is shifted in the first direction X. In this case, the distal end portion of the convex portion 26 having a tapered shape enters the hole portion 36. When the protruding portion 26 is further pushed into the hole 36, the side surface 26d of the protruding portion 26 is guided by the facing surface 36a of the hole 36. The facing surface 36a guides the convex portion 26 toward the center of the hole 36. That is, the opposing surface 36a adjusts the position of the protruding portion 26 in the first direction X to reduce the positional deviation of the protruding portion 26 with respect to the hole 36.

Fig. 10 shows the first claw portion 25 engaged with the first locking portion 35. The first claw portion 25 is guided between the two opposing surfaces 35b of the first locking portion 35. That is, the protruding portion 26 is configured to be guided by the hole portion 36 to position the first claw portion 25 between the two opposing surfaces 35 b. As an example of such a structure, the base 26a of the protruding portion 26 has a width wider than the first claw portion 25. Therefore, when the base 26a comes into contact with the facing surface 36a of the hole 36, the first claw portion 25 is positioned in the space between the two facing surfaces 35 b. Therefore, in the case 1 of the present embodiment, half engagement between the first locking portion 35 and the first claw portion 25 is suppressed, and appropriate engagement is achieved.

Fig. 11 shows the engaging portion 23E when engaged with the engaging portion 33E. The engagement portions 23E and 33E are engagement portions farthest from the first end portions 2a and 3 a. In the engaging portion 23E, the side surface 26d of the protruding portion 26 has a large inclination angle θe. That is, the engaging portions 23E and 33E can cope with a large shift in the first direction X, and can be appropriately engaged. Since the width of the distal end portion of the protruding portion 26 of the engaging portion 23E is small, the hole 36 can be easily formed.

When the plurality of locking structures 4 are engaged from the first end portions 2a, 3a side toward the second end portions 2b, 3b side, there is a possibility that the amount of displacement between the engaging portions 23 and the engaging portions 33 becomes large on the second end portions 2b, 3b side. In contrast, in the case 1 of the present embodiment, the inclination angle θ is made larger on the second end portions 2b, 3b side, so that the positional deviation can be corrected and the lock structure 4 can be appropriately engaged.

As described above, the case 1 of the present embodiment has the first case 2 and the second case 3. The first housing 2 has side wall portions 22a, 22b extending in the first direction X, a plurality of first claw portions 25, and a plurality of convex portions 26 corresponding to the plurality of first claw portions 25. The plurality of first claw portions 25 are arranged on the side wall portions 22a, 22b along the first direction X. The second housing 3 has a plurality of first locking portions 35 for locking the plurality of first claw portions 25 and a plurality of hole portions 36 into which the plurality of convex portions 26 are inserted. The second housing 3 is fitted to the first housing 2 to form an accommodating space for accommodating the electric wire.

The protruding portion 26 protrudes in the engagement direction Z in which the first claw portion 25 engages with the first engagement portion 35, and has a side surface 26d facing the first direction X. The side surface 26D of the protruding portion 26 of the engaging portions 23B, 23C, 23D, 23E is inclined with respect to the engaging direction Z so that the width Wd of the protruding portion 26 in the first direction X becomes narrower toward the distal end of the protruding portion 26. The side surface 26d guides the protruding portion 26 into the hole 36, thereby positioning the first claw portion 25 at a position where it can engage with the first locking portion 35.

In the case 1 of the present embodiment, the first claw portion 25 is positioned at a position where it can engage with the first locking portion 35 by the inclined side surface 26 d. Therefore, the housing 1 can correct the positional displacement of the engaging portions 23, 33 caused by the expansion and contraction, the deviation, and the like of the first housing 2 and the second housing 3, and engage the engaging portions 23, 33. In the present embodiment, the side surface 26D is inclined at least in the engaging portions 23B, 23C, 23D, 23E which are distant from the first end portions 2a, 3 a. This suppresses the occurrence of half engagement or failure of engagement in the lock structure 4. The side surface 26d may be inclined in all the engagement portions 23.

The first housing 2 of the present embodiment has a first end 2a as one end in the first direction X and a second end 2b as the other end in the first direction X. The inclination angle θ of the side surface 26d with respect to the engaging direction Z becomes larger as going from the first end portion 2a toward the second end portion 2b. Thus, half engagement in each of the plurality of locking structures 4 is appropriately suppressed.

The first claw portion 25 of the present embodiment protrudes in the second direction Y orthogonal to the first direction X. The first housing 2 has a second claw portion 27 provided at the first end portion 2 a. The second claw portion 27 protrudes in the first direction X. The second housing 3 has a second locking portion 34 for locking the second claw portion 27. In this way, when there is the second claw portion 27 having the protruding direction different from that of the first claw portion 25, the workability is good when the second claw portion 27 is engaged first. Further, as the inclination angle θ of the side surface 26d with respect to the engagement direction Z increases from the first end portion 2a toward the second end portion 2b, the plurality of lock structures 4 can be easily engaged.

In addition, the resin of the first case 2 and the resin of the second case 3 may be different resins. In this case, the thermal expansion coefficients of the resin of the first case 2 and the resin of the second case 3 may also be different. In the case where the thermal expansion coefficients of the two housings are different, the deformation amount of the first housing 2 is different from the deformation amount of the second housing 3 for the same temperature change. In contrast, in case 1 of the present embodiment, half engagement of the lock structure 4 is suppressed by appropriately setting the inclination angle θ of the side surface 26 d. As an example, the coefficient of thermal expansion of the first case 2 may be smaller than the coefficient of thermal expansion of the second case 3. The resin of the first case 2 may be harder than the resin of the second case 3.

The hole 36 of the second housing 3 may not be a through hole. For example, the hole 36 may be a recess provided in the main wall 31 of the second casing 3.

The number of the engaging portions 23 provided in the first housing 2 is not limited to the number shown in the example. The intervals between the plurality of engagement portions 23 arranged in the first direction X are not limited to the equal intervals.

The disclosure of the above embodiments can be performed in appropriate combination.

Claims (3)

1.A housing, comprising:

a first housing having: a side wall portion extending in a first direction; a plurality of first claw portions arranged on the side wall portion in the first direction; and a plurality of protrusions corresponding to the plurality of first claw portions; and

A second housing having: a plurality of first locking portions for locking the plurality of first claw portions; and a plurality of hole portions into which the plurality of convex portions are inserted, the second housing being fitted with the first housing to form an accommodation space for accommodating the electric wire,

The convex portion protrudes in an engagement direction in which the first claw portion engages with the first engagement portion, and the convex portion has a side surface facing the first direction,

The side surface is inclined with respect to the engagement direction in such a manner that the width of the protruding portion in the first direction becomes narrower toward the tip of the protruding portion,

The side surface guides the protruding portion into the hole portion, thereby positioning the first claw portion at a position where the first claw portion can engage with the first locking portion.

2. The housing of claim 1, wherein the housing is configured to receive the cartridge,

The first housing has a first end portion as one end of the first direction and a second end portion as the other end of the first direction,

The inclination angle of the side surface with respect to the engagement direction becomes larger as going from the first end portion toward the second end portion.

3. The housing of claim 2, wherein the housing is configured to receive the cartridge,

The first claw portion protrudes in a second direction orthogonal to the first direction,

The first housing has a second jaw portion disposed at the first end portion,

The second claw portion protrudes in the first direction,

The second housing has a second locking portion for locking the second claw portion.