Slip-prevention structure and slip-prevention tool used in said slip-prevention structure

Abstract

To properly maintain a connection state of an inside cover and an outside cover by not only preventing a relative detachment of the inside cover and the outside cover but also maintaining the inside cover in a proper state.SOLUTION: A retention structure is for preventing a relative detachment of an inside cover 2 for piping and an outside cover 3 for piping externally fitted and connected to an end part of the inside cover 2. The retention structure comprises a retention tool 5 that is attachable to the end part of the inside cover 2, is locked to an inner surface part of the outside cover 3 with the retention tool attached to the inside cover 2, and exerts a retention action of preventing a relative detachment of the inside cover 2 and the outside cover 3. The inside cover 2 is formed by combination of a plurality of split bodies. The retention tool 5 comprises an assembling state maintenance action part, which exerts an assembling state maintenance action of maintaining the plurality of split bodies in an assembled state with respect to the inside cover 2 with the assembling state maintenance action part assembled to the inside cover 2.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a retaining structure for preventing an inner cover for piping and an outer cover for piping from coming off relative to each other, and to a retaining device used in the retaining structure. [Background technology]

[0002] When installing piping covers along a piping path, for example, at bent path portions where the piping path is bent, at branching points, merging points, etc., an inner cover and an outer cover with a larger diameter than the inner cover are provided, and the inner cover and the outer cover are arranged continuously along the piping path (for example, see Patent Document 1). At the connection points between the inner cover and the outer cover, the outer cover is externally fitted onto the end of the inner cover, ensuring a certain amount of insertion allowance for inserting the inner cover into the outer cover, and the inner cover and the outer cover are arranged in a double layer.

[0003] In a double arrangement of an inner cover and an outer cover, if the inner cover or the outer cover moves in the longitudinal direction, there is no insertion allowance at the connection point between the inner cover and the outer cover, and the inner cover and the outer cover may come off relative to each other. Therefore, Patent Document 1 employs a fall-off prevention structure to prevent the inner cover for piping and the outer cover for piping from coming off relative to each other.

[0004] The retaining structure described in Patent Document 1 uses a retainer that can be freely attached to the end of the inner cover and that engages with the inner surface of the outer cover when attached to the inner cover.

[0005] The inner surface of the outer cover is provided with a stopper portion that protrudes inward, and the stopper is provided with an abutment portion that can abut against the stopper portion. When the stopper is attached to the inner cover, even if the inner cover or the outer cover moves in its longitudinal direction, the abutment portion of the stopper abuts against the stopper portion, thereby engaging with the inner surface of the outer cover and preventing the inner cover and the outer cover from coming off relative to each other. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2011-112079 A Summary of the Invention [Problem to be solved by the invention]

[0007] The anti-slip structure described in Patent Document 1 uses a non-slip device, but this non-slip device only has the function of preventing the inner cover and the outer cover from coming off relative to each other.

[0008] However, in order to properly maintain the connection between the inner cover and the outer cover, it is necessary not only to prevent the inner cover and the outer cover from coming off relative to each other, but also to maintain the inner cover and the outer cover in a proper state. For example, since the inner cover has a divided structure in which multiple divided bodies are assembled and connected, if the divided bodies are misaligned or the connection between the divided bodies is broken, the state in which the outer cover is fitted and connected to the inner cover will be lost, and it may become impossible to properly maintain the connection between the inner cover and the outer cover.

[0009] In view of this situation, the main objective of the present invention is to provide a slip-out prevention structure that not only prevents the inner cover and the outer cover from slipping out relative to each other, but also maintains the inner cover in an appropriate state and properly maintains the connection between the inner cover and the outer cover, and a slip-out prevention device for use in said slip-out prevention structure. [Means for solving the problem]

[0010] The first characteristic configuration of the present invention is a retaining structure for preventing relative removal of an inner cover for piping and an outer cover for piping that is externally fitted and connected to an end of the inner cover, comprising: A retainer is provided which is freely attachable to an end of the inner cover and which, when attached to the inner cover, engages with the inner surface of the outer cover to prevent the inner cover and the outer cover from coming off relative to each other. The inner cover is formed by combining a plurality of divided bodies, The stopper is provided with an assembled state maintaining portion that exerts an assembled state maintaining effect to maintain the assembled state of the multiple divided bodies relative to the inner cover when the stopper is attached to the inner cover.

[0011] According to this configuration, when the stopper is attached to the inner cover, the stopper engages with the inner surface of the outer cover to prevent the inner cover from coming off relative to the outer cover. Moreover, since the stopper is provided with an assembled state maintaining portion, the assembled state maintaining portion can maintain the assembled state of the inner cover in which the multiple divided bodies are assembled, and the inner cover can be maintained in an appropriate state. Thus, by simply attaching the stopper to the inner cover, it is possible to not only prevent the inner cover and the outer cover from coming off relative to each other while simplifying the configuration, but also to maintain the inner cover in an appropriate state and properly maintain the connection state between the inner cover and the outer cover.

[0012] The second characteristic configuration of the present invention is that the assembled state maintaining action portion has a plurality of claw portions that can be freely engaged with a plurality of divided bodies, and is provided as a slippage prevention action portion that exerts a slippage prevention action by engaging the plurality of claw portions with the plurality of divided bodies to prevent the divided bodies from slipping.

[0013] According to this configuration, the anti-slip portion exerts an anti-slip effect by causing the multiple claw portions to bite into the multiple segments to prevent the segments from slipping, thereby preventing the segments from slipping between each other and maintaining the inner cover in an appropriate condition.

[0014] A third characteristic feature of the present invention is that the anti-slip portion is provided with a clamping body that clamps the inner and outer sides of the divided body, and the claw portion is disposed on the clamping body.

[0015] According to this configuration, the anti-slip portion can have the claw portion bite into the partition while the clamping body clamps the inner and outer sides of the partition, thereby properly preventing movement of the partition and properly exerting the anti-slip function.

[0016] A fourth characteristic configuration of the present invention is a method for manufacturing a vehicle having a vehicle body, the method comprising the steps of: The inner cover is in an assembled state by fitting the fitting portions of the plurality of divided bodies together, The assembly state maintaining action portion has a surrounding portion that surrounds the periphery of the mated mating portions, and is provided as an anti-disengagement action portion that exerts an anti-disengagement action to prevent the mating portions surrounded by the surrounding portion from coming out of engagement with each other.

[0017] According to this configuration, the anti-disengagement portion exerts an anti-disengagement effect by surrounding the engaged mating portions with the enclosing portion, thereby preventing the mating portions from disengaging from each other. This makes it possible to prevent the mating portions from disengaging from each other and the divided bodies from becoming separated from each other, and the inner cover can be maintained in an appropriate state.

[0018] A fifth characteristic feature of the present invention is that the fitting-disengagement prevention portion is provided with a restricting wall portion that restricts the fitted fitting portions from moving in the fitting-disengagement direction.

[0019] If some external force or the like acts on the mated mating parts, causing the mating parts to move in the disengagement direction, the mating parts will become disengaged. Therefore, according to this configuration, the mating disengagement prevention section is simply provided with a restricting wall section, and even if some external force or the like acts on the mating parts, the restricting wall section restricts the movement of the mating parts in the disengagement direction, thereby simplifying the configuration and appropriately preventing the mating parts from disengaging.

[0020] A sixth characteristic configuration of the present invention is a retainer used in a retaining structure for preventing relative removal of an inner cover for piping and an outer cover for piping that is externally fitted and connected to an end of the inner cover, comprising: An attachment portion that can be attached to an end portion of the inner cover; a retaining portion that, when attached to the inner cover, engages with an inner surface of the outer cover to prevent the inner cover and the outer cover from being relatively separated from each other; The present invention is characterized in that, when the inner cover is attached to the inner cover, an assembled state maintaining portion is provided which exerts an assembled state maintaining effect for maintaining the assembled state in which the plurality of divided bodies are assembled relative to the inner cover.

[0021] According to this configuration, the stopper can be attached to the end of the inner cover at the attachment portion, and when attached to the inner cover, the stopper portion not only exerts a stopper effect of preventing the inner cover and the outer cover from coming off relative to each other, but also exerts an assembled state maintaining effect of maintaining the multiple divided bodies in an assembled state at the assembled state maintaining portion. Thus, by simply attaching the stopper to the inner cover, it is possible to not only prevent the inner cover and the outer cover from coming off relative to each other while simplifying the configuration, but also to maintain the inner cover in an appropriate state. [Brief description of the drawings]

[0022] [Figure 1] External view showing the arrangement of the piping cover [Diagram 2] FIG. 3 is a cross-sectional view showing the arrangement of piping and a piping cover. [Diagram 3] (A) A perspective view of the front side of the retainer, (B) A view of the retainer from the back side [Figure 4] An exploded perspective view of the first outer cover, the fourth inner cover, the second outer cover, and the retaining member. [Diagram 5] (A) A diagram showing the process of attaching the retaining device to the fourth inner cover, (B) A diagram showing the state after the retaining device is attached to the fourth inner cover [Figure 6] FIG. 1A is a cross-sectional view showing a first claw portion when a retaining device is attached to a fourth inner cover; FIG. 1B is a cross-sectional view showing a second claw portion when a retaining device is attached to a fourth inner cover; [Figure 7] FIG. 13A is a cross-sectional view showing a retaining portion when a retaining device is attached to the fourth inner cover; FIG. 13B is a cross-sectional view showing a state in which the retaining portion exerts a retaining effect when the retaining device is attached to the fourth inner cover; [Figure 8] (A) is a diagram showing the mating state of the mating parts, and (B) is a diagram showing the mating parts with anti-slip devices attached thereto. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a retaining structure according to the present invention and a retaining tool used in the retaining structure will be described with reference to the drawings. Figures 1 and 2 show a branching or merging point of piping 1 (shown by a dotted line in Figure 2), and Figure 1 shows an external view of piping 1 with piping covers 2 and 3 attached, while Figure 2 shows a cross-sectional view of Figure 1.

[0024] 1 and 2, an inner cover 2 and an outer cover 3 having a larger diameter than the inner cover 2 are provided as covers for piping that cover the periphery of a pipe 1, and the inner cover 2 and the outer cover 3 are disposed continuously along the pipe path. At the connection point between the inner cover 2 and the outer cover 3, an end of the outer cover 3 is externally fitted onto an end of the inner cover 2, and the stopper structure according to the present invention is applied to the connection point between the inner cover 2 and the outer cover 3.

[0025] As the piping 1, the first pipe 11 and the second pipe 12 extending in the left-right direction of FIG. 2 are arranged in parallel with a gap in the up-down direction of FIG. 2, and the second pipe 12 is in contact with the center of the first pipe 11. The gap between the first pipe 11 and the second pipe 12 in the up-down direction of FIG. 2 is narrow, and the first pipe 11 and the second pipe 12 are arranged as close as possible. The end portion of the second pipe 12 is connected to the center portion of the first pipe 11 in a bent state. Incidentally, although not shown, when the first pipe 11 and the second pipe 12 are arranged as shown in FIG. 2, for example, instead of directly connecting the first pipe 11 and the second pipe 12, a right-angled connecting pipe or the like can be connected between the first pipe 11 and the second pipe 12, and the first pipe 11 and the second pipe 12 can be connected in a state in which the connecting pipe or the like is interposed between them.

[0026] As shown in Figures 1, 2 and 4, the inner cover 2 is, for example, a linear cylindrical cover. In this embodiment, four inner covers 2, namely, first to fourth inner covers 21 to 24, are provided as the inner cover 2. Incidentally, in Figure 4, the fourth inner cover 24 is shown as the inner cover 2.

[0027] As shown in Fig. 1 and Fig. 2, the first inner cover 21 and the second inner cover 22 cover the periphery of the first pipe 11, and the third inner cover 23 and the fourth inner cover 24 cover the periphery of the second pipe 12. In Fig. 2, the first inner cover 21 is disposed on the upper right side in a posture extending in the left-right direction so as to cover the right part of the first pipe 11, and the second inner cover 22 is disposed on the upper left side in a posture extending in the left-right direction so as to cover the left part of the first pipe 11. The third inner cover 23 is disposed on the lower right side in a posture extending in the left-right direction so as to cover the straight part of the second pipe 12, and the fourth inner cover 24 is disposed in a posture extending in the up-down direction so as to cover the bent part of the second pipe 12.

[0028] 1 and 2, the outer cover 3 is used to connect the inner covers 2 to each other, and is configured as a tubular cover that can connect the inner covers 2 in a plurality of directions. In this embodiment, the outer cover 3 includes a first outer cover 31 that connects the first inner cover 21, the second inner cover 22, and the fourth inner cover 24, and a second outer cover 32 that connects the third inner cover 23 and the fourth inner cover 24.

[0029] The first outer cover 31 is formed in a shape (e.g., T-shape) that allows connection to the inner cover 2 in three directions, the left and right sides and the lower side in Figures 1 and 2, in order to connect the first inner cover 21, the second inner cover 22, and the fourth inner cover 24. The second outer cover 32 is formed in a shape (e.g., L-shape) that allows connection to the inner cover 2 in two directions, the upper side and the right side in Figures 1 and 2, in order to connect the third inner cover 23 and the fourth inner cover 24 that are perpendicular to each other.

[0030] As shown in Fig. 1 and Fig. 2, the first pipe 11 is continuously covered by the first inner cover 21, the first outer cover 31, and the second inner cover 22. At the connection between the first inner cover 21 and the first outer cover 31, one end of the first outer cover 31 is fitted externally to the connection side end of the first inner cover 21, and a certain amount of insertion space for inserting the first inner cover 21 into the first outer cover 31 is secured, so that the first inner cover 21 and the first outer cover 31 are arranged doubly on the inside and outside. Similarly, at the connection between the second inner cover 22 and the first outer cover 31, the other end of the second outer cover 32 is fitted externally to the connection side end of the second inner cover 22.

[0031] 1 and 2, the second pipe 12 is continuously covered with the third inner cover 23, the second outer cover 32, the fourth inner cover 24, and the first outer cover 31. At the connection between the third inner cover 23 and the second outer cover 32, one end of the second outer cover 32 is fitted and connected to the connection side end of the third inner cover 23, as shown in FIG.

[0032] The first outer cover 31 and the second outer cover 32 are connected in a state where they are butted together in the vertical direction in Fig. 1 and Fig. 2, and the fourth inner cover 24 is disposed inside the butt-connected portion as shown in Fig. 2. This makes it possible to prevent the pipes 1 from being exposed by the fourth inner cover 24 even if a slight gap occurs between the first outer cover 31 and the second outer cover 32 at the butt-connected portion between the first outer cover 31 and the second outer cover 32. Since the fourth inner cover 24 is disposed at the butt-connected portion between the outer covers 3, its length is limited to a length that fits within the butt-connected portion between the outer covers 3, and the length of the fourth inner cover 24 is set shorter than the first to third inner covers 21 to 23.

[0033] As for the connection points between the fourth inner cover 24 and the first outer cover 31, and the connection points between the fourth inner cover 24 and the second outer cover 32, as shown in Figure 2, the ends of the outer cover 3 are externally fitted and connected to the ends of the inner cover 2, similar to the connection points between the other inner covers 2 and outer covers 3.

[0034] 1 and 2, the anti-slip structure according to the present invention is a structure for preventing the inner cover 2 and the outer cover 3 from coming off relative to each other at the connection points between the inner cover 2 and the outer cover 3. For that reason, the anti-slip structure according to the present invention is applied to the connection points between the inner cover 2 and the outer cover 3, and in this embodiment, as shown in Figs. 1 and 2, there are a total of five connection points between the inner cover 2 and the outer cover 3.

[0035] 1 and 2, the first is a connection point on the upper right side where the first outer cover 31 is fitted and connected to the first inner cover 21, the second is a connection point on the upper left side where the first outer cover 31 is fitted and connected to the second inner cover 22, and the third is a connection point on the lower right side where the second outer cover 32 is fitted and connected to the third inner cover 23. The fourth and fifth points correspond to the butt connection points between the first outer cover 31 and the second outer cover 32, and as shown in FIG. 2, inside the connection points, there are a connection point on the upper central side where the first outer cover 31 is fitted and connected to the fourth inner cover 24, and a connection point on the lower central side where the second outer cover 32 is fitted and connected to the fourth inner cover 24.

[0036] The following describes the anti-slip structure of the present invention. However, since the same structure can be applied to any connection point between the inner cover 2 and the outer cover 3, the following describes the structure applied to the butt connection point between the first outer cover 31 and the second outer cover 32.

[0037] At the butt-joint connection point between the first outer cover 31 and the second outer cover 32, the first outer cover 31 and the second outer cover 32 are butt-jointed as shown in Figures 1 and 2, but as shown in Figure 2, the first outer cover 31 is externally fitted and connected to one side end (upper end in Figure 2) of the fourth inner cover 24 arranged inside, and the second outer cover 32 is externally fitted and connected to the other side end (lower end in Figure 2) of the fourth inner cover 24.

[0038] As shown in Fig. 4, both the first outer cover 31 and the second outer cover 32 are formed by combining a plurality of (for example, two) divided outer covers 31a, 32a to form one outer cover 3. In this embodiment, the first outer cover 31 is formed by fitting and connecting the halves of the semicircular divided first outer covers 31a to each other and fixing them to the fixing device mounting parts 34 (see Figs. 1 and 2) with fixing devices such as screws. Similarly, the second outer cover 32 is formed by fitting and connecting the halves of the semicircular divided second outer covers 32a to each other and fixing them to the fixing device mounting parts 34 (see Figs. 1, 2, and 4) with fixing devices such as screws, to form the cylindrical second outer cover 32.

[0039] As shown in Fig. 4, the inner surface of the first outer cover 31 and the second outer cover 32 is provided with a cover rattle prevention portion 33 that protrudes inward. This cover rattle prevention portion 33 abuts against the outer surface of the inner cover 2 that is fitted inside the first outer cover 31 or the second outer cover 32 to suppress rattle of the inner cover 2. Also, as shown in Figs. 2 and 3, the inner side of the first outer cover 31 and the second outer cover 32 is provided with a protruding fastener attachment portion 34 for attaching a fastener such as a screw, and the fastener attachment portion 34 abuts against an end of the inner cover 2 that is fitted inside, thereby regulating the insertion length of the inner cover 2.

[0040] As shown in Fig. 4, the fourth inner cover 24 is also configured by combining multiple (e.g., two) divided fourth inner covers 24a to form one fourth inner cover 24, similar to the first outer cover 31 and the second outer cover 32. In this embodiment, each of the two halves of the divided fourth inner cover 24a is formed in the same semicircular shape. Each of the two divided fourth inner covers 24a is provided with a fitting portion 4 at both ends in the circumferential direction, and the two divided fourth inner covers 24a are fitted and connected to each other by fitting and connecting the fitting portions 4 to each other to form the cylindrical fourth inner cover 24.

[0041] The fitting portion 4 is disposed over the entire length of the fourth inner cover 24 as shown in Fig. 4 and Fig. 5(A), and for example, as shown in Fig. 8(A), the divided fourth inner cover 24a has a fitting portion 4 of a different shape. Of the two divided fourth inner covers 24a, one divided fourth inner cover 24a (the divided fourth inner cover 24a on the right side in Fig. 8(A)) has a hook-shaped first fitting portion 41 with a curved tip side, and the other divided fourth inner cover 24a (the divided fourth inner cover 24a on the left side in Fig. 8(A)) has an L-shaped second fitting portion 42 that fits into the first fitting portion 41. The shape of the fitting portion 4 can be changed as appropriate, and various shapes can be applied as long as they can be fitted and connected.

[0042] 2 and 5(B), this anti-slip structure prevents the fourth inner cover 24 from slipping off relative to the first outer cover 31, and prevents the fourth inner cover 24 from slipping off relative to the second outer cover 32, by attaching anti-slip devices 5 to both ends, one end and the other end, of the fourth inner cover 24, as shown in FIG. 1, FIG. 2, etc. Here, the length direction of the fourth inner cover 24, which is the inner cover 2, is referred to as the "cover length direction X", and the radial direction of the fourth inner cover 24, which is the inner cover 2, is referred to as the "cover radial direction Y".

[0043] As shown in Figures 2 and 5(B), when the anti-slip device 5 is attached to the end of the fourth inner cover 24, it has an outer portion 51 located on the outside of the fourth inner cover 24 in the cover radial direction Y, an inner portion 52 located on the inside of the fourth inner cover 24 in the cover radial direction Y, and a connecting portion 53 connecting the outer portion 51 and the inner portion 52.

[0044] As shown in Fig. 3(A), the outer portion 51 is formed in a plate shape extending from the base end side to the tip end side along the cover length direction X, and the tip end side portion forms an inclined portion 54 inclined outward in the cover radial direction Y. As shown in Fig. 3(B), an opening 55 is provided in the center of the tip of the outer portion 51, and a first claw portion 56 extending from the tip side of the outer portion 51 to the base end side is provided within the opening 55. As shown in Fig. 3(A), the first claw portion 56 is provided in an orientation in which it extends obliquely from the outward side to the inward side in the cover radial direction Y by utilizing the inclined portion 54, and the tip portion of the first claw portion 56 protrudes inward (downward in Fig. 3(A)) from the outer portion 51 in the cover radial direction Y.

[0045] As shown in Fig. 3(A), like the outer portion 51, the inner portion 52 includes a plate-shaped inner central portion 57 extending from the base end side to the tip end side along the cover length direction X, and a pair of left and right inner upright wall portions 58 extending from the inner side to the outer side in the cover radial direction Y are provided at both left and right ends of the inner central portion 57. Each of the pair of left and right inner upright wall portions 58 is provided with a second claw portion 59 extending from the inner side to the outer side in the cover radial direction Y on the side away from the connecting portion 53. The tip portion of the second claw portion 59 is the portion of the inner upright wall portion 58 that protrudes furthest outward in the cover radial direction Y (upward in Fig. 3(A)).

[0046] As shown in Fig. 3(A), the connecting portion 53 is formed in a plate shape extending along the cover radial direction Y. The outer portion 51, the connecting portion 53, and the inner central portion 57 of the inner portion 52 form a continuous U-shape in side view. The inner portion 52 is formed in a continuous U-shape in front view by the inner central portion 57 and the pair of left and right inner upright wall portions 58. The stopper 5 is formed in a shape combining two U-shapes by sharing the inner central portion 57 of the inner portion 52.

[0047] 3(B), the left-right width H1 of the connecting portion 53 is the same as the left-right width of the outer portion 51. In contrast, the left-right width H2 of the inner central portion 57 of the inner portion 52 is wider by a predetermined amount than the left-right width H1 of the connecting portion 53. As a result, the outer portion 51 and the pair of left and right inner upright wall portions 58 are arranged independently with a gap between them without overlapping with each other in the left-right direction.

[0048] As shown in FIG. 3(A), the stopper 5 has a gap between the outer portion 51 and the pair of left and right inner upright wall portions 58 in the cover radial direction Y, and is configured to be freely attached to the end of the fourth inner cover 24 by inserting the fourth inner cover 24 into the gap as shown in FIG. 5(A). As shown in FIG. 6(B), when the stopper 5 is attached to the end of the fourth inner cover 24, the fourth inner cover 24 is sandwiched between the outer portion 51 and the pair of left and right inner upright wall portions 58 in the inner portion 52. In this way, the stopper 5 is provided with an attachment portion 70 that is freely attachable to the end of the fourth inner cover 24 in a state where the inner side and the outer side of the divided fourth inner cover 24a are sandwiched. As shown in FIG. 2 and FIG. 6, the attachment portion 70 is configured by the outer portion 51, the inner portion 52, and the connecting portion 53.

[0049] As shown in Figs. 3 and 6, a first claw portion 56 is provided on the outer portion 51, and a second claw portion 59 is provided on each of the pair of left and right inner upright wall portions 58, so that the mounting portion 70 is provided with the first claw portion 56 and the second claw portion 59 that can be bitten into the divided fourth inner cover 24a. As shown in Fig. 6(A), the first claw portion 56 can be bitten into the outer surface of the divided fourth inner cover 24a. As shown in Fig. 6(B), the second claw portion 59 can be bitten into the inner surface of the divided fourth inner cover 24a. The first claw portion 56 and the second claw portion 59 are bitten in a state in which the divided fourth inner cover 24a is sandwiched from both the inside and outside.

[0050] As shown in FIG. 3, the stopper 5 has a gap between the outer portion 51 and the inner upright wall portion 58, and as shown in FIG. 5, the inner cover 2 is inserted into the gap between the outer portion 51 and the inner upright wall portion 58 to attach the stopper 5 to the end of the inner cover 2. At this time, for example, since the thickness of the inner cover 2 is larger than the gap between the outer portion 51 and the inner upright wall portion 58, the inner cover 2 is inserted into the gap between the outer portion 51 and the inner upright wall portion 58 while being elastically deformed so as to separate the outer portion 51 and the inner upright wall portion 58. Therefore, due to the action of the elastic restoring force caused by the elastic deformation, the inner cover 2 is sandwiched between the outer portion 51 and the inner upright wall portion 58, and the first claw portion 56 and the second claw portion 59 bite into the inner cover 2, as shown in FIG. 6, and the stopper 5 can be easily and reliably attached to the inner cover 2.

[0051] 3(A) and 6, the first claw portion 56 and the second claw portion 59 are both formed with an inclination that inclines toward the side that reduces the gap between the outer portion 51 and the claw portions 56, 59 toward the back side in the insertion direction of the fourth inner cover 24 (the left side in FIG. 6). Therefore, when attaching the stopper 5 to the fourth inner cover 24, when the fourth inner cover 24 is inserted into the gap between the outer portion 51 and the inner upright wall portion 58, the first claw portion 56 and the second claw portion 59 do not get caught on the outer surface portion or the inner surface portion of the fourth inner cover 24, and the insertion of the fourth inner cover 24 can be performed smoothly, and the attachment work of the stopper 5 can be easily performed. When the anti-slip device 5 is attached to the end of the inner cover 2, as shown in Figures 5(B) and 6, the elastic force causes the outer portion 51 and the inner upright wall portion 58 to clamp the inner cover 2, so that the first claw portion 56 and the second claw portion 59 can clamp the inner cover 2 from both the inside and outside.

[0052] As shown in Fig. 3 and Fig. 6(B), each of the pair of left and right inner upright walls 58 is provided with a stopper anti-rattle part 60 in addition to the second claw part 59. The stopper anti-rattle part 60 is disposed on the side closer to the connecting part 53, opposite to the second claw part 59. The stopper anti-rattle part 60 is configured to be able to abut against the inner surface of the inner cover 2 when the first claw part 56 and the second claw part 59 are in a state where they are engaged with the inner cover 2. As shown in Fig. 3(A), the stopper anti-rattle part 60 is formed in an inclined shape such that the closer to the connecting part 53 the side closer to the outer part 51 (upper side), the closer to the connecting part 53 the part is, the abutment part 60a. 6(B), the contact portion 60a of the stopper rattle prevention portion 60 is disposed on the side (lower side) away from the outer portion 51 by a predetermined amount from the tip of the second claw portion 59, and can only come into contact with the inner surface of the fourth inner cover 24 when the second claw portion 59 is bitten into the inner surface of the inner cover 2. The contact portion 60a of the stopper rattle prevention portion 60 comes into contact with the inner cover 2, thereby suppressing rattling of the stopper 5.

[0053] (Prevention part) As shown in Fig. 7, the stopper 5 is provided with a stopper action part 71 that engages with the inner surface of the outer cover 3 (first outer cover 31 or second outer cover 32) when attached to the fourth inner cover 24, thereby preventing the fourth inner cover 24 and the outer cover 3 from coming off relative to each other. Incidentally, Fig. 7 shows an enlarged cross-sectional view of the right side part of the connection part between the fourth inner cover 24 and the first outer cover 31 in Fig. 1.

[0054] As shown in Figures 3(A) and 7, the anti-slip portion 71 is composed of the inclined portion 54 of the outer portion 51, and as shown in Figure 7(B), the inclined portion 54 is abutted against the anti-slip engagement portion 35 of the outer cover 3, thereby engaging with the inner surface of the outer cover 3 and exerting a non-slip effect.

[0055] When the stopper 5 is attached to the end of the fourth inner cover 24, as shown in FIG. 7(A), the inclined portion 54 of the outer portion 51 is inclined so as to approach the inner surface of the first outer cover 31 toward the tip side (lower side) of the outer portion 51. The inner surface of the first outer cover 31 is provided with a stopper locking portion 35 that protrudes inward. The stopper locking portion 35 is disposed over the entire circumferential length of the first outer cover 31 by making a part of the fastener attachment portion 34 protrude inward (see FIG. 4). Returning to FIG. 7(A), when the first outer cover 31 is externally fitted to the end of the fourth inner cover 24, an insertion allowance is secured so that the fourth inner cover 24 and the first outer cover 31 overlap, so that the inclined portion 54 of the stopper 5 and the stopper locking portion 35 of the first outer cover 31 are separated from each other.

[0056] At this time, if the fourth inner cover 24 and the first outer cover 31 move relative to each other for some reason, there will be no insertion allowance for the fourth inner cover 24 and the first outer cover 31 to overlap, and there is a possibility that the fourth inner cover 24 and the first outer cover 31 may come off relative to each other. Therefore, even if the fourth inner cover 24 and the first outer cover 31 move relative to each other, as shown in Fig. 7(B), the inclined portion 54 of the stopper 5 comes into contact with the stopper engaging portion 35 of the first outer cover 31 to prevent further relative movement, thereby preventing the fourth inner cover 24 and the first outer cover 31 from coming off relative to each other.

[0057] As shown in FIG. 7(B), when the inclined portion 54 of the stopper 5 and the stopper locking portion 35 of the first outer cover 31 come into contact with each other, a force (see arrow in FIG. 7(B)) acts on the stopper 5 in a direction to disengage from the fourth inner cover 24. However, as shown in FIG. 6, when the force (see arrow in FIG. 6) acts, a force to bite into the first claw portion 56 and the second claw portion 59 acts. Therefore, the bite force of the first claw portion 56 and the second claw portion 59 becomes strong, and the stopper 5 does not come off the fourth inner cover 24, and the state in which the stopper 5 is attached to the end portion of the fourth inner cover 24 can be maintained, and the relative disengagement of the fourth inner cover 24 and the first outer cover 31 can be appropriately prevented.

[0058] The anti-slip device 5 is provided not only with an anti-slip portion 71, but also with an anti-slip portion 72 which acts to prevent the split fourth inner cover 24a from slipping, as shown in FIG. 6, and an anti-disengagement portion 73 which acts to prevent the mating portions 4 in the split fourth inner cover 24a from disengaging from each other, as shown in FIG. 8(B).

[0059] (Slip prevention part) As shown in Fig. 3(A) and Fig. 6, the slip-prevention action part 72 is configured to include the outer part 51, the pair of left and right inner standing wall parts 58, the first claw part 56, and the second claw part 59 in the stopper 5. As shown in Fig. 6, the slip-prevention action part 72 includes a clamping body 74 formed by the outer part 51 and the pair of left and right inner standing wall parts 58, and the clamping body 74 clamps the inner side and the outer side of the divided fourth inner cover 24a. The first claw part 56 and the second claw part 59 (corresponding to the claw parts) arranged on the outer part 51 and the pair of left and right inner standing wall parts 58 that constitute the clamping body 74 bite into both the inner side and the outer side of the divided fourth inner cover 24a.

[0060] In this way, as shown in Figure 6, the anti-slip portion 72, by clamping the inner and outer sides of the split fourth inner cover 24a using the outer portion 51, the pair of left and right inner upright wall portions 58, the first claw portion 56, and the second claw portion 59, prevents the split fourth inner cover 24a from moving, and exerts an anti-slip effect to prevent the split fourth inner cover 24a (corresponding to the split body) from shifting.

[0061] 6, when the stopper 5 is attached to the end of the fourth inner cover 24, the end of the divided fourth inner cover 24a is abutted against the connecting portion 53 of the stopper 5. As a result, the connecting portion 53 can also prevent the divided fourth inner cover 24a from moving, so the connecting portion 53 can also be provided as the slippage prevention portion 72.

[0062] (Prevention of disengagement) As shown in Figures 3(A) and 8(B), the fitting-disengagement prevention part 73 is configured in the stopper 5 with an inner central part 57 and a pair of left and right inner upright wall parts 58. As shown in Figures 5(B) and 7(B), the fitting-disengagement prevention part 73 prevents the fitting parts 4 from disengaging by surrounding the fitted fitting parts 4 with the inner central part 57 and the pair of left and right inner upright wall parts 58.

[0063] As shown in FIG. 5(A), each of the two split fourth inner covers 24a is provided with a fitting portion 4 at both circumferential ends thereof, and the fitting portions 4 are fitted together to form the cylindrical fourth inner cover 24. When attaching the stopper 5 to the end of the fourth inner cover 24, the stopper 5 is attached to the fitted fitting portions 4. As shown in FIG. 3(A), the stopper 5 is provided with an inner central portion 57 and a pair of left and right inner standing wall portions 58 as the inner portion 52, so that a space 61 surrounded on three sides by the inner central portion 57 and the pair of left and right inner standing wall portions 58 is formed. Therefore, as shown in FIG. 5(A), the fitted fitting portions 4 are inserted into this space 61, so that the stopper 5 can be attached to the fitted fitting portions 4.

[0064] In this way, when the anti-slip device 5 is attached to the mated mating portions 4, as shown in Figures 5(B) and 8(B), the mated mating portions 4 can be surrounded in three directions, including the inner side of the fourth inner cover 24 and both circumferential sides, by the inner central portion 57 and a pair of left and right inner upright wall portions 58.

[0065] As a result, even if an external force acts obliquely from the outer side to the inner side of the fourth inner cover 24, for example, as shown by the arrows in Figure 8 (A), the inner central portion 57 and the pair of left and right inner upright wall portions 58 can restrict movement of the engaged mating portions 4 in three directions, that is, the inner side of the fourth inner cover 24 and both circumferential sides, as shown in Figure 8 (B), and can appropriately prevent the mating portions 4 from coming apart.

[0066] As shown in Figure 8 (B), the inner central portion 57 and the pair of left and right inner upright wall portions 58 surround the mated mating portions 4, and by abutting the mating portions 4 against each other, they restrict the mating portions 4 from moving in the direction of disengagement, so that the inner central portion 57 and the pair of left and right inner upright wall portions 58 are provided as the enclosing portion 75 and the restricting wall portions 76.

[0067] Incidentally, when the stopper 5 is attached to the fitted fitting parts 4, a connecting portion 53 of the stopper 5 is present between the fitted fitting parts 4 in the length direction of the fourth inner cover 24. This connecting portion 53 also restricts movement of the fitted fitting parts 4 between each other in the length direction of the fourth inner cover 24.

[0068] As described above, the fourth inner cover 24 is shorter in length than the other first to third inner covers 21 to 23, and therefore the length over which the mating portions 4 fit together is shorter. Therefore, the fourth inner cover 24 may have its mating portions 4 come apart when subjected to a smaller external force than the other first to third inner covers 21 to 23. For this reason, the short-length fourth inner cover 24 is particularly useful because the mating-disengagement prevention portion 73 exerts a mating-disengagement prevention effect that prevents the mating portions 4 in the divided fourth inner cover 24a from coming apart.

[0069] Regarding the inner cover 2, by aligning the positions of the two divided fourth inner covers 24a (corresponding to divided bodies) and fitting the fitting parts 4 together, the fourth inner cover 24 can be brought into an assembled state by fitting and connecting the fitting parts 4 together without causing misalignment of the divided fourth inner covers 24a. In maintaining this assembled state, the misalignment prevention part 72 prevents the divided fourth inner cover 24a from misaligning, so that the fourth inner cover 24 can be maintained in the assembled state, and the fitting disengagement prevention part 73 also prevents the fitting parts 4 from disengaging, so that the fourth inner cover 24 can be maintained in the assembled state. Therefore, the assembled state maintaining part that exerts an assembled state maintaining action to maintain the fourth inner cover 24 in the assembled state can be composed of at least one of the misalignment prevention part 72 and the fitting disengagement prevention part 73.

[0070] As described above, the stopper 5 is provided with the stopper action portion 71, the anti-slip action portion 72, and the fitting / disengagement prevention action portion 73, and exerts three functions of preventing slippage, preventing slippage, and preventing fitting / disengagement when attached to the inner cover 2. As a result, by using the stopper 5 at the connection portion between the inner cover 2 and the outer cover 3, a stopper structure having these three functions can be achieved, and not only can the inner cover 2 and the outer cover 3 be prevented from coming off relative to each other, but the inner cover 2 can be maintained in an appropriate state, and the connection state between the inner cover 2 and the outer cover 3 can be maintained in an appropriate state.

[0071] The retaining device 5 can be manufactured, for example, by punching and bending a metal plate. By making the retaining device 5 from metal in this way, it is possible to form the first claw portion 56 and the second claw portion 59 that can be properly interlocked. Furthermore, by making the retaining device 5 into a thin metal plate, it is possible to fit the retaining device 5 into even a narrow space, such as between the outer surface of the inner cover 2 and the inner surface of the outer cover 3, at the connection point between the inner cover 2 and the outer cover 3, and to properly install the retaining device on the end of the inner cover 2.

[0072] As shown in FIG. 2, there are five connection points between the inner cover 2 and the outer cover 3. Therefore, at each of these five connection points, a stopper device 5 is attached to the end of the inner cover 2. This not only prevents the inner cover 2 and the outer cover 3 from coming loose relative to each other at all five connection points, but also maintains the inner cover 2 in an appropriate state, thereby providing a stopper structure that can properly maintain the connection state between the inner cover 2 and the outer cover 3.

[0073] Here, as shown in FIG. 7(B), an explanation will be given of the retaining engagement portion 35 that comes into contact with the inclined portion 54 of the retaining tool 5 when the retaining action portion 71 exerts its retaining action.

[0074] 4, the first outer cover 31 has the retaining locking portions 35 disposed over the entire circumferential length at both left and right ends and the lower end, which are connection points for the inner cover 2. The second outer cover 32 has the retaining locking portions 35 disposed over the entire circumferential length at the upper end and the right end, which are connection points for the inner cover 2. In this way, the outer cover 3 has the retaining locking portions 35 disposed at the ends, which are connection points for the inner cover 2. Therefore, at any connection point between the inner cover 2 and the outer cover 3, the inclined portions 54 of the retaining device 5 come into contact with the retaining locking portions 35, thereby appropriately exerting the retaining effect of preventing the inner cover 2 and the outer cover 3 from coming off relative to each other.

[0075] The retaining locking portion 35 is originally provided for another purpose. For example, when fixing the inner cover 2, the outer cover 3, etc. to a wall surface or the like using a fastener, the fastener can be inserted into the outer cover 3 through the gap between the inner cover 2 and the outer cover 3, and the fastener can be hooked on the retaining locking portion 35 to be locked.

[0076] In this way, the retaining locking portion 35 is used for fixing the inner cover 2 and the outer cover 3, and is also used as it is to exert a retaining effect as an abutment target for the inclined portion 54 of the retaining device 5. In this way, instead of providing a new retaining locking portion 35 to exert the retaining effect, the retaining effect can be exerted by using a member used for another purpose, which can simplify the configuration.

[0077] When installing the inner cover 2, the outer cover 3, the retaining device 5, etc., the construction procedure can be performed in the following order: pipe installation process, inner cover installation process, retaining device installation process, and outer cover installation process. Incidentally, the order of each process can be changed as appropriate depending on the construction situation, etc.

[0078] The pipe installation process is a process of installing the pipe 1 to an installation target portion such as a wall surface with a pipe fastener such as a pipe band. The inner cover installation process is a process of installing the inner cover 2 so as to cover the periphery of the installed pipe 1. For example, as shown in Fig. 4, the fourth inner cover 24 (inner cover 2) can be installed in an assembled state so as to cover the pipe 1 with a half divided fourth inner cover 24a (divided body).

[0079] The stopper attachment step is a step of attaching the stopper 5 to the end of the assembled inner cover 2. For example, as shown in FIG. 5(A), the stopper 5 can be attached to the fitting portion 4 fitted in the fourth inner cover 24. The outer cover attachment step is a step of attaching the outer cover 3 to the end of the inner cover 2 in a state of being externally fitted and connected. For example, as shown in FIG. 4, the first outer cover 31 can be assembled by fitting and connecting a half divided first outer cover 31a so as to cover one end of the fourth inner cover 24 (inner cover 2) from the outside, and the first outer cover 31 can be attached in a state of being externally fitted and connected to one end of the fourth inner cover 24, and the second outer cover 32 can be assembled by fitting and connecting a half divided second outer cover 32a so as to cover the other end of the fourth inner cover 24 from the outside, and the first outer cover 31 can be attached in a state of being externally fitted and connected to the other end of the fourth inner cover 24.

[0080] [Another embodiment] Other embodiments of the present invention will be described below. Note that the configurations of the embodiments described below are not limited to being applied alone, but may also be applied in combination with the configurations of other embodiments.

[0081] (1) In the above embodiment, the outer cover 3 is used to connect the linear inner covers 2 together. However, conversely, the inner cover 2 can also be used to connect the linear outer covers 3 together. The uses for which the inner covers 2 and outer covers 3 are used can be changed as appropriate.

[0082] (2) In the above embodiment, the inner cover 2 and the outer cover 3 are formed in a cylindrical shape. However, the shapes of the inner cover 2 and the outer cover 3 can be changed as appropriate.

[0083] (3) In the above embodiment, as shown in Figures 1 and 2, the anti-slip structure of the present invention is exemplified at a branching or merging point of piping 1. However, for example, the anti-slip structure of the present invention can also be applied to a curved path portion where piping 1 is bent and arranged, and the point at which the anti-slip structure of the present invention is applied in the piping path can be changed as appropriate.

[0084] (4) In the above embodiment, an example of a slip-out prevention structure using the anti-slip device 5 was given. However, the shape and configuration of the anti-slip device 5 may be modified as appropriate as long as it has an anti-slip effect of preventing the inner cover 2 and the outer cover 3 from slipping out relative to each other and an assembled state maintaining effect of maintaining the assembled state of the multiple divided bodies combined with the inner cover 2.

[0085] (5) In the above embodiment, the inner surface of the outer cover 3 is provided with the retaining locking portion 35 that abuts against the inclined portion 54 of the retaining device 5 in order to provide a retaining effect, but the retaining locking portion 35 may be omitted. In this case, for example, the tip of the inclined portion 54 of the retaining device 5 may be abutted against the inner surface of the outer cover 3 to be locked, or the inclined portion 54 may be provided with a claw portion or the like that bites into the inner surface of the outer cover 3, thereby providing a retaining effect. [Explanation of symbols]

[0086] 1 Piping 2 Inner cover 3 Outer cover 4 Fitting part 5 Stopper 24a Split 4th inner cover (split body) 56 First claw part (claw part) 59 Second claw part (claw part) 70 Mounting part (outer part 51, inner part 52, connection part 53) 71 Anti-slip action part (inclined part 54) 72 Anti-slip action portion (outer portion 51, inner upright wall portion 58, first claw portion 56, second claw portion 59) 73 Fitting of the anti-corrosion function part (inner central part 57, inner rising wall part 58) 74 clamping body (outer part 51, inner standing wall part 58) 75 Inner part (inner central part 57, inner rising wall part 58) 76 Regulatory wall (inner central portion 57, inner rising wall 58)

Claims

1. A retaining structure for preventing relative removal of an inner cover for piping and an outer cover for piping that is fitted and connected to an end of the inner cover, comprising: A retainer is provided which is freely attachable to an end of the inner cover and which, when attached to the inner cover, engages with the inner surface of the outer cover to prevent the inner cover and the outer cover from coming off relative to each other. The inner cover is formed by combining a plurality of divided bodies, The stopper includes an assembled state maintaining portion that maintains an assembled state in which the plurality of divided bodies are assembled with respect to the inner cover when the stopper is attached to the inner cover, Each of the plurality of divided bodies is provided with a fitting portion that can be freely fitted to a fitting portion of the other divided bodies, The inner cover is in an assembled state by fitting the fitting portions of the plurality of divided bodies together, The fitting portion is disposed on the inside of the inner cover, the assembled state maintaining action portion has a surrounding portion surrounding the periphery of the mated mating portions, and is provided with a mating disengagement prevention action portion that exerts a mating disengagement prevention action to prevent disengagement of the mating portions surrounded by the surrounding portion, When the anti-slip device is attached to the inner cover, the surrounding portion of the anti-disengagement portion is disposed on the inside of the inner cover, and a locking portion that engages with the inner surface of the outer cover is disposed on the outside of the inner cover.

2. The stopper is provided with a clamping body that clamps the inner surface and the outer surface of the inner cover when attached to the inner cover, The retaining structure according to claim 1 , wherein the surrounding portion is disposed on the inner surface side of the inner cover of the clamping body.

3. The surrounding portion is provided with a regulating wall portion that regulates the movement of the mated mating portions in a mating disengagement direction, 3. The retaining structure according to claim 1, wherein the restricting wall portion is provided with a second claw portion extending in a direction in which the restricting wall portion stands and engaging with an inner surface of the inner cover.

4. The stopper is provided with a clamping body that clamps the inner surface and the outer surface of the inner cover when attached to the inner cover, The second claw portion is disposed on an inner surface side of the inner cover of the clamping body, The retaining structure according to claim 3 , wherein the outer surface side of the inner cover of the clamping body is provided with a first claw portion that bites into the outer surface side of the inner cover.

5. A retainer for use in a retaining structure for preventing relative removal of an inner cover for piping and an outer cover for piping that is fitted and connected to an end of the inner cover, An attachment portion that can be attached to an end portion of the inner cover; a retaining portion that, when attached to the inner cover, engages with an inner surface of the outer cover to prevent the inner cover and the outer cover from being relatively separated from each other; an assembled state maintaining portion that maintains an assembled state in which the plurality of divided bodies are assembled with respect to the inner cover when the divided bodies are attached to the inner cover; the assembled state maintaining portion has a surrounding portion that surrounds the periphery of the mated fitting portions on the inside of the inner cover, and is provided with a fitting disengagement preventing portion that exerts a fitting disengagement preventing action to prevent disengagement of the fitting portions surrounded by the surrounding portion, When attached to the inner cover, the anti-slip device has the surrounding portion of the anti-detachment portion disposed on the inside of the inner cover, and a locking portion that locks onto the inner surface of the outer cover is disposed on the outside of the inner cover.

Images