JP4717041B2 - Protector lock structure - Google Patents

Description

  The present invention relates to a protector lock structure in which an engagement frame portion is hooked and locked by a locking projection by closing an opening of a protector body with a protector cover.

  In FIG. 3, a locking projection 3 is formed to project from the outer surface of the side wall 2 of the protector body 1. The locking projection 3 is formed in a substantially trapezoidal shape when viewed from the front of the side wall 2. When the protector cover 5 having the engaging frame portion 4 is attached to the protector main body 1 and the opening 6 is closed, the window portion 7 of the engaging frame portion 4 is caught by the locking projection 3, thereby locking (locking) State) is formed.

  The engagement frame portion 4 includes two frame side portions 8 that extend from the opening 6 side to the opposite opening side when locked, a frame lower portion 9 that connects between the end portions of the both frame side portions 8, and the inside thereof. The window portion 7 is formed.

  As described above, the locking protrusion 3 has a substantially trapezoidal shape when viewed from the front, and is inclined so as to gradually move away from the outer surface of the side wall 2 from the opening 6 side toward the opposite opening side. 4, the sliding bottom surface 10 when the frame lower portion 9 slides, the top vertical surface 11 that is continuous with the locking sliding surface 10 and parallel to the outer surface of the side wall 2, and the top vertical surface 11. In addition, a locking surface 12 that is perpendicular to the top vertical surface 11 and the outer surface of the side wall 2 and on which the frame lower portion 9 of the engaging frame portion 4 is hooked, and both frame side portions of the engaging frame portion 4 as shown in FIG. 8 and a pair of inclined portions 13 for forming a gap N for allowing deformation.

The pair of inclined portions 13 are formed so as to be orthogonal to the top vertical surface 11 and the outer surface of the side wall 2. The pair of inclined portions 13 are formed so that the engagement frame portion 4 and the locking projection 3 are separated from each other at a position on the opening 6 side.
JP-A-8-14221

  In the conventional lock structure and the general lock structure described above, the lock holding force is high when the lock structure is completely assembled and locked as shown in FIG. 3B. For example, the protector cover 5 is attached to the protector body during recycling. In the case where the internal wire harness is detached from 1 and the internal wire harness is separated, there is a problem that the locked state must be released using a dedicated tool. In other words, when the lock holding force is high, it is difficult to work without using a dedicated tool.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a protector lock structure that can be easily unlocked without using a dedicated tool at the time of recycling, for example. .

  The protector locking structure of the present invention according to claim 1, which has been made to solve the above-described problems, has a locking projection formed on the outer surface of the side wall of the protector body having an opening, and closes the opening. A flexible U-shaped engagement frame is formed on the side of the cover, and the opening is closed by the protector cover so that the engagement frame is hooked and locked to the locking projection. In the lock structure of the protector, the locking projection is rectangular when viewed from the front of the side wall, and is inclined so as to gradually move away from the outer surface of the side wall from the opening side toward the non-opening side. The lock sliding surface on which the frame lower part of the engagement frame part slides, the locking surface on which the frame lower part is hooked and locked, and the tilting toward the top of the sliding surface on locking and the protector body Twisted Is characterized in that it has allowed to act the instrument and unlocking during sliding surface the frame side portion of the engagement frame section in accordance with this action slides at least.

  According to the present invention having such a feature, when a torsional moment is applied to the protector main body, the locked state of the engaging frame portion and the locking protrusion is released along with this action.

  The lock structure of the protector of the present invention according to claim 2 is the lock structure of the protector according to claim 1, wherein the sliding surface at the time of unlocking is not provided with a surface orthogonal to the outer surface of the side wall. It is characterized by inclining toward the top.

  According to the present invention having such a feature, the frame side portion of the engagement frame portion smoothly slides on the sliding surface when unlocked, thereby releasing the locked state of the engagement frame portion and the locking projection. Is done.

  According to the first aspect of the present invention, there is an effect that the locked state can be easily released without using a dedicated tool even when the lock holding force is high. The present invention is useful for recycling, for example.

  According to the second aspect of the present invention, there is an effect that the locked state of the engaging frame portion and the locking projection can be smoothly released.

  Hereinafter, description will be given with reference to the drawings. FIG. 1 is a view showing an embodiment of a protector lock structure according to the present invention. FIG. 1 (a) is a perspective view of a protector body and a protector cover, and FIG. 1 (b) is a front view of a locked state. 2 is an explanatory diagram of the state when unlocking, FIG. 2 (a) is a perspective view showing the direction of action of the torsional moment, FIG. 2 (b) is a cross-sectional view along the line AA in FIG. 1 (b), FIG. 2C is a cross-sectional view showing a state in which the frame side portion slides on the sliding surface when unlocked, and FIG. 2D is a cross-sectional view showing a state when unlocking.

  In FIG. 1, a protector 21 that houses a wire harness (not shown) and protects the wire harness is provided with a protector body 22 and a protector cover 24 that closes an opening 23 of the protector body 22. .

  The protector main body 22 includes a bottom wall 25, a pair of side walls 26 standing on both sides of the bottom wall 25, and a pair of tape winding portions 27 extending continuously from the bottom wall 25. The bottom wall 25 and the pair of side walls 26 are formed in a substantially U shape in sectional view.

  The protector cover 24 is formed in a flat plate shape so that the opening 23 formed between the pair of side walls 26 on the upper surface of the protector body 22 can be closed.

  A plurality of locking protrusions 28 are formed on the outer surfaces of the pair of side walls 26 of the protector body 22 (three in each side wall 26 in this embodiment, which is an example). The locking projection 28 is formed in the upper part of the outer surface, that is, in the vicinity of the opening 23. The locking projection 28 is formed in a rectangular shape when viewed from the front of the side wall 26. The locking projection 28 is formed to have a plurality of surfaces. Hereinafter, a plurality of surfaces will be described.

  The locking projection 28 includes a locking sliding surface 29, a top vertical surface 30, a locking surface 31, and a pair of unlocking sliding surfaces 32.

  The sliding surface 29 at the time of locking is formed so as to be an inclined surface that gradually separates from the outer surface of the side wall 26 from the opening 23 side to the opposite opening side. The top vertical surface 30 is formed so as to be continuous with the sliding surface 29 when locked and to be parallel to the outer surface of the side wall 26.

  The top vertical surface 30 is the top of the locking projection 28 and is formed in a rectangular shape. The top vertical surface 30 is formed such that a sliding surface 29 when locked, a locking surface 31 and a pair of sliding surfaces 32 when unlocked are continuous on each side.

  The locking surface 31 is formed to be a surface orthogonal to the top vertical surface 30 and the outer surface of the side wall 26. The locking surface 31 is formed so as to continue to the top vertical surface 30 and also to the pair of unlocking sliding surfaces 32.

  The pair of unlocking sliding surfaces 32 are formed to be surfaces inclined toward the top vertical surface 30. The pair of unlocking sliding surfaces 32 are formed so as to be inclined immediately from the outer surface without providing a surface perpendicular to the outer surface of the side wall 26.

  In the case of FIG. 1B, each surface of the locking projection 28 includes a locking sliding surface 29 as an upper inclined surface, a pair of unlocking sliding surfaces 32 as left and right inclined surfaces, and a locking surface 31. Is arranged and formed to be a lower horizontal plane. The locking projection 28 is formed in a trapezoidal cross-sectional shape as shown in FIG.

  A plurality of flexible U-shaped engagement frame portions 34 project from the side portion 33 of the protector cover 24 (three in each side portion 33 in this embodiment. Corresponding to the number). The engagement frame portion 34 is formed so as to be hooked and locked to the locking projection 28 of the protector body 22.

  The engaging frame portion 34 includes two frame side portions 35 extending from the opening 22 side to the opposite opening side at the time of locking, a frame lower portion 36 that connects between the end portions of the both frame side portions 35, and the inside thereof. And a window portion 37 formed at the bottom.

  In such an engagement frame portion 34, the reference numeral 36a is a portion that slides on the sliding surface 29 when the locking projection 28 is locked, the reference numeral 37a is a portion that is hooked on the locking surface 31 of the locking projection 28, The reference numeral 35 a is formed as a portion that slides on the pair of unlocking sliding surfaces 32 of the locking projection 28.

  In the above configuration, when the protector cover 24 is attached to the protector main body 22 and the opening 23 is closed, when the protector cover 24 is pressed from above the opening 23 toward the protector main body 22, the frame lower portion 36 of the engagement frame portion 34 is moved. The locking projection 28 slides on the sliding surface 29 at the time of locking, whereby the engagement frame 34 is bent outward. When the engagement frame portion 34 gets over the locking projection 28 while being bent, the window portion 37 of the engagement frame portion 34 is fitted into the locking projection 28 as shown in FIG. As a result, the engaging frame portion 34 is caught by the engaging protrusion 28 and locked, and is brought into a locked state.

  When in the locked state, even if the protector cover 24 is moved in the direction opposite to the pressing direction, the frame lower portion 36 of the engaging frame portion 34 is caught on the locking surface 31 of the locking projection 28. In such a method, the protector cover 24 cannot be removed.

  For example, when the protector cover 24 is removed from the protector body 22 and the internal wire harness is separated at the time of recycling, the protector body 22 is twisted and a twist moment M is applied to the protector body 22 as shown in FIG. Act. When the torsional moment M acts, the protector main body 22 causes torsional deformation, and tries to deform in the opposite direction along the longitudinal direction (the direction indicated by the arrow X in FIG. 2A). For this reason, the reaction force P (see FIG. 2B) acts on the protector cover 24.

  When the reaction force P acts on the protector cover 24, the engagement frame portion 34 and the locking projection 28 move in opposite directions, and the frame side portion 35 of the engagement frame portion 34 as shown in FIG. Slides on the sliding surface 32 when the locking projection 28 is unlocked. When the twisting is continued, the engaging frame portion 34 gradually bends outward, and when the frame side portion 35 reaches the top vertical surface 30 of the locking projection 28, the locked state is released. When the locked state is released, the protector cover 24 can be detached from the protector body 22.

  As described above with reference to FIGS. 1 and 2, even when the lock holding force is high, the locked state can be easily released without using a dedicated tool. In the present invention, the protector body 24 can be released and the protector cover 24 can be removed simply by twisting the protector body 22.

  The lock state can be released in a short time, and therefore workability is good. Since the locking projection 28 and the engagement frame portion 34 do not require complicated shapes, the protector body 22 and the protector cover 24 are not enlarged due to the lock structure.

  Since the present invention does not have a structure in which the protector cover 24 is removed by destroying the locking projection 28 and the engagement frame portion 34 (particularly the engagement frame portion 34), small fragments generated at the time of destruction are not mixed into the wire harness. It will be possible to sort without fail.

  It goes without saying that the present invention can be variously modified without departing from the spirit of the present invention.

It is a figure which shows one Embodiment of the lock structure of the protector of this invention, (a) is a perspective view of a protector main body and a protector cover, (b) is a front view of a locked state. It is state explanatory drawing at the time of unlocking, (a) is a perspective view showing the direction of action of torsional moment, (b) is a cross-sectional view taken along the line AA of FIG. 1 (b), (c) is a frame side portion is locked Sectional drawing which shows the state which slides the sliding surface at the time of cancellation | release, (d) is sectional drawing which shows the state at the time of lock release. It is a figure which shows the lock structure of the protector of a prior art example, (a) is a perspective view of a locked state, (b) is a front view of a locked state, (c) is a deformation | transformation in both frame side parts of an engagement frame part. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 21 Protector 22 Protector main body 23 Opening part 24 Protector cover 25 Bottom wall 26 Side wall 27 Tape winding part 28 Locking protrusion 29 Sliding surface at the time of locking 30 Top vertical surface (top part)
31 Locking surface 32 Sliding surface when unlocking 33 Side part 34 Engagement frame part 35 Frame side part 36 Frame lower part 37 Window part

Claims (2)

Forming a locking projection on the outer surface of the side wall of the protector body having an opening, and forming a flexible U-shaped engagement frame on the side of the protector cover that closes the opening, In the lock structure of the protector in which the engagement frame portion is hooked and locked by the locking protrusion by closing the opening with the protector cover,
The locking projection is rectangular when viewed from the front side of the side wall, and is inclined so as to gradually move away from the outer surface of the side wall from the opening side toward the opposite opening side. When the locking sliding surface where the lower portion slides, the locking surface where the lower portion of the frame is caught and locked, and the tilting toward the top of the sliding surface when locking, and the torsional moment is applied to the protector body A lock structure for the protector, comprising at least an unlocking sliding surface on which the frame side portion of the engagement frame portion slides in accordance with this action. The lock structure of the protector according to claim 1,
The lock structure for the protector, wherein the sliding surface when unlocking is inclined toward the top without providing a surface perpendicular to the outer surface of the side wall.

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