Shield structure

Abstract

To provide a shield structure that can be made at reduced manufacturing cost.SOLUTION: A shield structure 1 is supported at a predetermined position on an electric wire 10 and comprises: a cylinder shield shell 2 having a shield space 20; and a housing 3 that is inserted into the shield space while holding the electric wire. The shield shell includes a guide structure 4 that guides the housing into the shield space. The housing 3 includes: a pair of divided members 31A and 31B that nips and holds the electric wire 10; and a lock mechanism 5 for maintaining a state where the pair of divided members is holding the electric wire. The lock mechanism includes: a lock part 5A provided on one of the pair of division bodies; and a lock receiving part 5B provided on the other divided member and being engageable with the lock part 5A. As the housing is inserted into the shield space, the housing is guided by the guiding structure to cause the divided members to come closer to each other, and the lock part and the lock reception part to be engaged.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a shield structure. [Background technology]

[0002] A wide variety of electronic devices are installed in automobiles, and wire harnesses are arranged to transmit power, control signals, etc. to the electronic devices. The wire harnesses include multiple electric wires and connectors, and are connected to the electronic devices and other wire harnesses by fitting the connectors to the connectors of the electronic devices or the connectors of other wire harnesses.

[0003] Among such wire harnesses, a shielding structure attached to two shielded cables handling high voltages, such as those used in electric vehicles (EVs) and hybrid electric vehicles (HEVs), is known (see, for example, Patent Document 1). One example of the shielding structure includes a housing that accommodates terminal-attached electric wires, with terminals connected to the ends of the electric wires, and a cylindrical shielding shell into which the housing is inserted. The housing is configured to have a pair of divided bodies that sandwich the electric wires between them. One of the pair of divided bodies is provided with a locking portion, and the other is provided with a lock receiving portion that can engage with the locking portion, and the pair of divided bodies are configured to maintain a state in which the electric wires are sandwiched between them by engaging the locking portion with the lock receiving portion.

[0004] When assembling such a shielding structure, the electric wires are sandwiched between the pair of halves that make up the housing, and in the locked state where the locking portion is engaged with the lock receiving portion, the pair of halves are inserted into the inside of a jig, and after it is confirmed (detected) that the pair of halves is in the locked state, they are housed in the shielding shell. In this way, the shielding structure is assembled. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2023-57199 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in conventional shield structures, a jig is used to detect whether the pair of segments is locked, which requires the expense of preparing the jig and the work required to detect whether the pair of segments is locked, resulting in high manufacturing costs.

[0007] An object of the present invention is to provide a shield structure that reduces manufacturing costs. [Means for solving the problem]

[0008] In order to solve the above problems and achieve the object, the invention described in claim 1 is a shielding structure that supports electric wires at predetermined positions, and includes a cylindrical shielding shell having a shielding space, and a housing that holds the electric wires and is inserted into the shielding space, wherein the shielding shell is a cylindrical shell body that defines the shield space; and an extension plate that extends in a direction away from the shell body. a guide structure for guiding the housing into the shielded space; and, the housing has a pair of divided bodies that sandwich and hold the electric wire, and a locking mechanism for maintaining a state in which the pair of divided bodies hold the electric wire, the locking mechanism having a locking portion provided on one of the pair of divided bodies and a lock receiving portion provided on the other and capable of engaging with the locking portion, and the housing is guided by the guiding structure as the pair of divided bodies approach each other, and the locking portion and the lock receiving portion engage with each other as the housing is inserted into the shielded space. The shell main body has a first wall and a second wall that face each other in a direction in which the pair of divided bodies sandwich the electric wire, the extension plate is provided continuous with the second wall, and the guide structure has a first guide portion that is provided on the first wall and has a first guide surface that is inclined so as to protrude toward the second wall as the housing advances in an insertion direction in which the housing is inserted into the shielded space. This is a shield structure characterized by the above. [Effects of the Invention]

[0009] According to the invention of claim 1, it is possible to reduce the manufacturing cost. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a perspective view showing a shield structure according to an embodiment of the present invention; [Figure 2] FIG. 2 is a perspective view showing a shield shell that constitutes the shield structure. [Figure 3] 4 is a perspective view showing a state in which a housing constituting the shield structure holds electric wires. FIG. [Figure 4] FIG. 4 is a side view of the housing. [Figure 5] FIG. 5 is a cross-sectional view taken along line II in FIG. [Figure 6] 10 is a cross-sectional view illustrating a state in which the housing is inserted into the shield space of the shield shell in a disengaged state. FIG. [Figure 7] FIG. 7 is a cross-sectional view showing a step subsequent to that shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a perspective view showing a shielding structure 1 according to an embodiment of the present invention. Fig. 2 is a perspective view showing a shielding shell 2 that constitutes the shielding structure 1. Fig. 3 is a perspective view showing a state in which a housing 3 that constitutes the shielding structure 1 holds an electric wire 10. The shielding structure 1 constitutes a wire harness that is arranged in an automobile or the like, and constitutes a shielding circuit that shields electric noise that leaks to the outside from an electric wire 10 that transmits a control signal or the like, or electric noise that enters from the outside.

[0012] 1 and 2, a shielding structure 1 of this embodiment is configured to support a pair of electric wires 10 (electric wires, shown in FIG. 1) at predetermined positions and to be fixed to a metal mounting target on a vehicle body to form a shielding circuit, and includes a cylindrical shielding shell 2 having a shielding space 20 (shown in FIG. 2), a housing 3 (shown in FIG. 1) that holds the pair of electric wires 10, 10 and is inserted into the shielding space 20, and a shell-side guide portion 4 (guiding structure, shown in FIG. 2) that is provided on the shielding shell 2 and guides the housing 3 into the shielding space 20. A terminal connector (not shown) is connected to each of the pair of electric wires 10, 10 at its end (rear end, the end on the near side in FIG. 1).

[0013] Hereinafter, the axial direction of each of the pair of electric wires 10, 10 may be referred to as the "front-rear direction" and indicated by the "arrow Y," the direction in which the pair of electric wires 10, 10, 2 are arranged may be referred to as the "left-right direction" and indicated by the "arrow X," and the direction perpendicular to the arrows X and Y and in which the pair of divided bodies 31A, 31B sandwich the electric wire 10 may be referred to as the "height direction" and indicated by the "arrow Z." Furthermore, in the arrow Y, one end side of the electric wire 10 (the rear front side in FIG. 1) may be referred to as the "forward Y1," and the opposite side may be referred to as the "rear Y2." Furthermore, in the arrow Z, one side may be referred to as the "upper Z1" and the other as the "lower Z2."

[0014] 2, the shielded shell 2 includes a shell main body 21 that defines the shielded space 20, a cylindrical portion 22 that continues from the front Y1 of the shell main body 21, a plate-shaped vehicle body fastening portion 23 (extension plate) that continues from the rear Y2 of the shell main body 21 and is fastened with a bolt to an attachment target (not shown), a locked portion 24 that is locked by a locking arm 314 (described below) that is provided on the housing 3, and a shell-side guide portion 4 that guides the housing 3 into the shielded space 20.

[0015] As shown in FIG. 2, the shell body 21 has an upper wall 21A (first wall), a bottom wall 21B (second wall), and a pair of side walls 21C, 21D, and is provided with a storage section body 210 formed in a rectangular cylindrical shape with its axis in the front-to-rear direction Y to form the shielded space 20, and a blocking wall 211 located at the rear end of the storage section body 210 to fill the gap with the tubular section 22.

[0016] The height dimension L0 (shown in FIG. 2) of this shell body 21 (the inner diameter dimension from the upper wall 21A to the bottom wall 21B) is configured to be greater than the height dimension when the housing 3 described below is in an engaged state, and smaller than the height dimension when the housing 3 is in a disengaged state.

[0017] 2, the vehicle body fastening portion 23 is configured in a plate shape extending in the front-rear direction Y and the left-right direction X, and is provided continuously with the bottom wall 21B of the shell main body 21 via a lower guide portion 41, which will be described later. The vehicle body fastening portion 23 is provided with a bolt insertion hole 230 through which a bolt (not shown) is inserted.

[0018] As shown in FIG. 2, the locked portions 24 are provided in pairs on the bottom wall 21B of the shell main body 21 and spaced apart in the left-right direction X. Each locked portion 24 includes a cut edge 24A formed by cutting out the bottom wall 21B, a bulging portion 24B that bulges upward Z1 toward the shielded space 20, and a hole 24C provided forward Y1 of the cut edge 24A. The cut edge 24A forms the front edge of the bulging portion 24B. This bulging portion 24B is provided continuously in the front-rear direction Y, with its rear end provided at the vehicle body fastening portion 23 and its front end (cut edge 24A) provided at the bottom wall 21B of the shell main body 21, straddling a lower guide portion 41 that constitutes the shell-side guide portion 4, which will be described later.

[0019] As shown in FIG. 2, the shell-side guide portion 4 includes an upper guide portion 40 (first guide portion) and a lower guide portion 41 (second guide portion).

[0020] The upper guide portion 40 is provided on the rear end edge of the upper wall 21A of the shell main body 21, and is configured to have a first guide surface that slopes downward Z2 as it extends forward Y1. In other words, the upper guide portion 40 has a tapered shape formed by cutting out the rear end edge of the shell main body 21. The upper guide portion 40 is provided at a position away from the vehicle body fastening portion 23 in the front-rear direction Y, with the lower guide portion 41 in between. The upper guide portion 40 is also provided at a position where it will abut against an upper abutment portion 60 (shown in FIG. 3), which will be described later, of the housing 3 when the lower guide portion 41 pushes up the housing 3.

[0021] The lower guide portion 41 is located at a step between the bottom wall 21B of the shell main body 21 and the vehicle body fastening portion 23, and is configured with a second guide surface that slopes upward Z1 (inward of the shielded space 20) as it proceeds forward Y1.

[0022] As shown in FIGS. 3 and 4, the housing 3 has a pair of wire insertion portions 30, 30 (shown in FIG. 3) through which the pair of wires 10, 10 are respectively inserted, and includes an upper division body 31A and a lower division body 31B (a pair of division bodies) that sandwich and hold the pair of wires 10, 10, a locking mechanism 5 (shown in FIG. 4) provided on one side surface of the upper division body 31A and the lower division body 31B in the left-right direction X, and a hinge 32 (shown in FIG. 3) provided on the other side surface of the pair of division bodies 31A, 31B in the left-right direction X and that connects the pair of division bodies 31A, 31B to each other.

[0023] The upper divisional body 31A and the lower divisional body 31B are each configured in a block shape. The upper divisional body 31A and the lower divisional body 31B have divisional surfaces 310a and 310b extending in directions perpendicular to the up and down direction (X and Y directions), respectively, and are configured so that the electric wire 10 inserted into the electric wire insertion portion 30 (described later) is held in a state where the divisional surfaces 310a and 310b are in contact with each other.

[0024] 3, each wire insertion portion 30 has a pair of grooves 30A, 30B formed by cutting out the dividing surfaces 310a, 310b of the pair of segments 31A, 31B, respectively, in the shape of grooves extending in the front-rear direction Y. Hereinafter, one of the pair of grooves 30A, 30B may be referred to as the "upper groove 30A," and the other of the pair of grooves 30A, 30B may be referred to as the "lower groove 30B." The upper groove 30A is provided in the upper segment 31A, and the lower groove 30B is provided in the lower segment 31B.

[0025] As shown in Figure 3, the upper division body 31A comprises an upper division body main body 310A having an upper groove portion 30A formed in the upper division surface 310a, a pair of upper electric wire support portions 311A, 311A ​​that are continuous with the upper groove portion 30A of the upper division body main body 310A and extend forward Y1 to support a pair of electric wires 10, 10, respectively, and an upper connecting portion 312A that connects the pair of upper electric wire support portions 311A, 311A.

[0026] As shown in Figures 3 and 6, the lower section 31B includes a lower section main body 310B having a lower groove portion 30B formed in a lower section surface 310b, a lower wire support portion 311B that is continuous with the lower groove portion 30B of the lower section main body 310B and is assembled to the upper wire support portion 311A ​​to support each of the pair of electric wires 10, 10, a one-side support portion 313B that is continuous with the lower groove portion 30B of the lower section main body 310B and extends rearward Y2 to support one of the electric wires 10, 10, and a locking arm 314 (shown in Figure 6) that locks the locked portion 24 of the shield shell 2.

[0027] 1 and 3, the lower division body main body 310B is provided with an insertion portion 315 through which the locked portion 24 provided on the shell body 21 is inserted. As shown in Fig. 6, the insertion portion 315 is located below Z2 of the lower groove portion 30B, and is formed in the shape of a groove extending in the front-to-rear direction Y on the lower surface of the lower division body main body 310B (the surface that can come into contact with the bottom wall 21B of the shell body 21).

[0028] As shown in Figures 6 and 7, the locking arm 314 is formed by cutting out the wall portion 300 located between the lower groove portion 30B and the insertion portion 315 and is configured to include an arm main body 316 extending forward Y1, and a locking protrusion 317 provided at the free end of the arm main body 316 for locking onto the locked portion 24 (cut edge 24A).

[0029] As shown in Figures 4 and 5, the locking mechanism 5 is configured to include a locking portion 5A provided on the upper division body 31A and a lock receiving portion 5B provided on the lower division body 31B that engages with the locking portion 5A.

[0030] The locking portion 5A is U-shaped and includes a pair of extending portions 51, 51 extending in the up-down direction Z and arranged side by side in the front-rear direction Y, and a connecting portion 52 connecting the lower ends of the pair of extending portions 51, 51. The locking portion 5A is configured to be movable toward and away from the left-right direction X. The upper end of the locking portion 5A is fixed to one side surface of the upper section 31A in the left-right direction X, and the lower end of the locking portion 5A protrudes downward Z2 from the dividing surface 310a of the upper section 31A.

[0031] The lock receiving portion 5B is formed by a protrusion that protrudes from one side surface of the lower divided body 31B in the left-right direction X. This lock receiving portion 5B is configured to be positioned inside the U-shape of the locking portion 5A, i.e., inside the pair of extension portions 51, 51 and the connecting portion 52, when the upper divided body 31A and the lower divided body 31B approach each other and their divided surfaces 310a, 310b come into contact with each other. In this embodiment, the state in which the lock receiving portion 5B is positioned inside the U-shape of the locking portion 5A is referred to as an "engaged state in which the locking portion 5A and the lock receiving portion 5B are engaged," and in the engaged state, the pair of divided bodies 31A, 31B maintain a state in which they hold the electric wire 10.

[0032] As shown in FIG. 4, the housing 3 is provided with an upper contact portion 60 (contact portion) that contacts the upper guide portion 40 of the shield shell 2, and a lower contact portion 61 that contacts the lower guide portion 41 of the shield shell 2.

[0033] 4, the upper abutment portion 60 is provided at a corner located at the boundary between the top surface and the front surface of the upper divided body 31A, and is configured to have a taper that tapers downward Z2 as it proceeds forward Y1. The taper of this lower abutment portion 61 is configured to be an inverse taper to the inclination (taper) of the upper guide portion 40 of the shield shell 2. As a result, the upper abutment portion 60 is configured to abut against and slide on the upper guide portion 40 as the housing 3 is moved forward Y1.

[0034] 4, the lower contact portion 61 is provided at a corner located at the boundary between the underside and front sides of the lower section 31B, and is configured to have a taper that extends upward Z1 as it extends forward Y1. The lower contact portion 61 is configured to slide along the lower guide portion 41 as the housing 3 moves forward Y1.

[0035] Next, the assembly procedure for assembling the shield structure 1 having the above-described configuration will be described with reference to Figures 1 and 3 to 7. In Figures 6 and 7, the electric wires 10 are omitted.

[0036] First, the pair of electric wires 10, 10 is inserted into the shield shell 2 with the vehicle body fastening portion 23 facing rearward Y2. Then, the housing 3 is positioned rearward Y2 of the shield shell 2, and predetermined positions of the electric wires 10 are placed in the upper groove portion 30A (or the lower groove portion 30B) of the upper division body 31A (or the lower division body 31B) of the housing 3, and the electric wires 10 are fixed to the upper division body 31A (or the lower division body 31B) using tape or a cable tie.

[0037] Then, the upper divisional body 31A is displaced (moved) so as to approach the lower divisional body 31B. As the displacement of the upper divisional body 31A progresses, the tip of the locking portion 5A provided on the upper divisional body 31A comes into contact with the lock receiving portion 5B of the lower divisional body 31B. As the displacement progresses, the locking portion 5A abuts against the lock receiving portion 5B, and the locking portion 5A bends and climbs over the lock receiving portion 5B. As the displacement progresses further, the locking portion 5A climbs over the lock receiving portion 5B and returns to its natural state. At approximately the same time, the divided surfaces 310a, 310b of the upper divisional body 31A and the lower divisional body 31B come into contact with each other, the electric wires 10 are inserted into the electric wire insertion portions 30, and the lock receiving portion 5B is positioned inside the U-shape of the locking portion 5A, i.e., inside the pair of extension portions 51, 51 and the connecting portion 52, as shown in FIGS. 4 and 5 . In this way, the housing 3 is brought into an engaged state in which the locking portion 5A is engaged with the lock receiving portion 5B. In this engaged state, the pair of divided bodies 31A, 31B keeps sandwiching and holding the electric wire 10, as shown in FIG.

[0038] Thereafter, the housing 3 (in an engaged state) is moved forward Y1 relative to the shielded shell 2. As the movement progresses, the lower abutment portion 61 of the housing 3 comes into contact with the lower guide portion 41 of the shielded shell 2. As the movement continues, as shown in FIG. 7 , the lower abutment portion 61 slides along the inclination of the second guide surface of the lower guide portion 41, climbing up the lower guide portion 41, and the housing 3 is inserted into the shielded space 20 of the shielded shell 2. As the movement continues, the locking arm 314 of the housing 3 locks the locked portion 24 of the shielded shell 2. This prevents the housing 3 from coming off the shielded shell 2. In this way, the assembly of the shielded shell 2 is completed.

[0039] Next, with reference to Figures 6 and 7, we will explain what happens when the housing 3 is inserted into the shielded space 20 of the shield shell 2 in a non-engaged state, i.e., when the lock receiving portion 5B is not positioned inside the U-shape of the locking portion 5A, i.e., inside the pair of extension portions 51, 51 and the connecting portion 52 (non-engaged state).

[0040] The housing 3 (in a disengaged state) is moved forward Y1 relative to the shield shell 2. As the movement progresses, the lower abutment portion 61 of the housing 3 abuts against the lower guide portion 41 of the shield shell 2. As the movement continues, the lower abutment portion 61 slides against the inclination of the lower guide portion 41 and climbs up the lower guide portion 41, as shown in FIG. 6 . At approximately the same time, the upper abutment portion 60 of the housing 3 abuts against the upper guide portion 40 of the shield shell 2. As the movement continues, the upper abutment portion 60 slides against the inclination of the first guide surface of the upper guide portion 40, and the upper divided body 31A is pressed against the lower divided body 31B. As a result, the locking portion 5A approaches the lock receiving portion 5B, and the lock receiving portion 5B is positioned inside the U-shape of the locking portion 5A, i.e., inside the pair of extending portions 51 and the connecting portion 52. In this way, the housing 3 enters an engaged state in which the locking portion 5A engages with the lock receiving portion 5B, and as shown in Fig. 7, insertion into the shielded space 20 is permitted. As the movement continues, the locking arms 314 of the housing 3 lock onto the locked portions 24 of the shielded shell 2. This prevents the housing 3 from coming off the shielded shell 2. In this way, assembly of the shielded structure 1 is completed.

[0041] Thereafter, the shield structure 1 is bolted to the vehicle body fastening portion 23. In this way, a shield circuit is formed that blocks electrical noise leaking to the outside from the electric wire 10 that transmits control signals, etc., or electrical noise entering from the outside.

[0042] According to the above-described embodiment, as the housing 3 is inserted into the shielded space 20, the housing 3 is guided by the shell-side guide portion 4 (guide structure), causing the pair of halves 31A, 31B to approach each other and engage the lock portion 5A and the lock receiving portion 5B. This eliminates the need for the expense of preparing a jig and the work of checking (detecting) whether the pair of halves 31A, 31B are engaged, as in the prior art, thereby reducing manufacturing costs.

[0043] Furthermore, the shell-side guide portion 4 (guidance structure) has an upper guide portion 40 (first guide portion), which is provided on the top wall 21A (first wall) and is configured to have a first guide surface that is inclined so as to protrude toward the bottom wall 21B (second wall) as it proceeds forward Y1 (the insertion direction in which the housing 3 is inserted into the shielded space 20). With this, when the housing 3 is in a disengaged state, the housing 3 slides along the inclination of the first guide surface that constitutes the upper guide portion 40, and one of the pair of divided bodies 31A, 31B is pressed against the other, thereby bringing the pair of divided bodies 31A, 31B closer to each other, and a configuration can be realized in which the housing 3 is inserted into the shielded space 20 in an engaged state in which the lock portion 5A is engaged with the lock receiving portion 5B.

[0044] Furthermore, the shell-side guide portion 4 (guidance structure) has a lower guide portion 41 (second guide portion), which is provided between the bottom wall 21B (second wall) and the vehicle body fastening portion 23 (extension plate), and is configured to have a second guide surface that is inclined so as to protrude toward the upper wall 21A (first wall) as it proceeds forward Y1 (the insertion direction in which the housing 3 is inserted into the shielded space 20). With this, when the housing 3 is in a disengaged state, the housing 3 slides along the inclination of the second guide surface that constitutes the lower guide portion 41, and by climbing up the second guide surface, one of the pair of divided bodies 31A, 31B is pressed against the other, bringing the pair of divided bodies 31A, 31B closer to each other, thereby realizing a configuration in which the housing 3 is inserted into the shielded space 20 in an engaged state in which the lock portion 5A is engaged with the lock receiving portion 5B.

[0045] Furthermore, the housing 3 has an upper contact portion 60 (contact portion) on the upper divided body 31A (one of the pair of divided bodies 31A, 31B) that can come into contact with the upper guide portion 40 (first guide portion), the upper guide portion 40 being provided on the side away from the vehicle body fastening portion 23 (extension plate) with the lower guide portion 41 (second guide portion) in between, and the upper guide portion 40 being provided at a position where the upper contact portion 60 comes into contact when the housing 3 is guided by the lower guide portion 41. This staggers the timing at which the housing 3 comes into contact with the lower guide portion 41 and the upper guide portion 40 of the shield shell 2, and a configuration can be realized in which the housing 3 can be smoothly inserted into the shielded space 20 with little force even in a disengaged state.

[0046] Furthermore, the inner dimension L0 of the shell main body 21 in the direction in which the pair of divided bodies 31A, 31B sandwich the electric wire 10 is configured to be smaller than that in a disengaged state in which the locking portion 5A and the lock receiving portion 5B of the housing 3 are not engaged, and larger than that in an engaged state in which the locking portion 5A and the lock receiving portion 5B are engaged. This makes it possible to prevent the housing 3 from being inserted into the shielded space 20 in a disengaged state.

[0047] Although the best configurations and methods for carrying out the present invention have been disclosed above, the present invention is not limited thereto. That is, although the present invention has been particularly illustrated and described mainly with reference to specific embodiments, those skilled in the art can make various modifications to the above-described embodiments in terms of shape, material, quantity, and other detailed configurations without departing from the scope of the technical idea and purpose of the present invention. Therefore, the above-disclosed descriptions limiting the shape, material, etc. are provided as examples to facilitate understanding of the present invention and are not intended to limit the present invention. Therefore, descriptions using names of components that are free from some or all of the limitations on shape, material, etc. are included in the present invention. [Explanation of symbols]

[0048] 1. Shield structure 10 Electric wire 2 Shield Shell 20 Shielded Space 21 Shell body 21A Upper wall (first wall) 21B Bottom wall (2nd wall) 23 Body fastening part (extension plate) 3. Housing 31A Upper division body (one of a pair of division bodies) 31B Lower division body (the other of the pair of division bodies) 4 Shell side guide section (guide structure) 40 Upper guide section (1st guide section) 41 Lower guide section (second guide section) 5 Locking mechanism 5A Locking part 5B Lock receiving part 60 Upper contact part (contact part) Y1 Front (insertion direction into the shield space)

Claims

1. A shielding structure supported in place on an electric wire, a cylindrical shield shell having a shield space; a housing that holds the electric wire and is inserted into the shielded space, the shield shell includes a cylindrical shell body that defines the shielded space, an extension plate that extends in a direction away from the shell body, and a guide structure that guides the housing into the shielded space, the housing has a pair of divided bodies that sandwich and hold the electric wire, and a locking mechanism that maintains a state in which the pair of divided bodies hold the electric wire, the locking mechanism has a locking portion provided on one of the pair of divided bodies and a lock receiving portion provided on the other of the pair of divided bodies and capable of engaging with the locking portion, the housing is guided by the guide structure as the housing is inserted into the shielded space, so that the pair of divided bodies approach each other and the lock portion and the lock receiving portion engage with each other, the shell body has a first wall and a second wall that face each other in a direction in which the pair of divided bodies sandwich the electric wire, The extension plate is provided continuously with the second wall, the guide structure has a first guide portion, a first guide portion provided on the first wall and configured to have a first guide surface that is inclined so as to protrude toward the second wall as the housing progresses in an insertion direction into the shielded space.

2. the guide structure has a second guide portion, The shield structure according to claim 1, characterized in that the second guide portion is provided between the second wall and the extension plate, and is configured to have a second guide surface that is inclined so as to protrude toward the first wall as the housing proceeds in an insertion direction in which it is inserted into the shielded space.

3. the housing has an abutment portion on one of the pair of divided bodies that is capable of abutting against the first guide portion, the first guide portion is provided on a side of the second guide portion that is away from the extension plate, 3. The shield structure according to claim 2, wherein the first guide portion is provided at a position where the abutting portion abuts against the first guide portion when the housing is guided by the second guide portion.

4. 2. The shield structure according to claim 1, wherein an inner dimension of the shell main body in a direction in which the pair of divided bodies sandwich the electric wire is smaller than that in a disengaged state in which the locking portion and the lock receiving portion are not engaged in the housing, and is larger than that in an engaged state in which the locking portion and the lock receiving portion are engaged.

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