JP2000055240A - Trough - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a cable to be stored etc., from mischievously suffering, improve a waterproofing property and improve setting work efficiency. SOLUTION: This trough is constituted of a trough main body 5 having left and right side walls 2, 3 and a bottom wall 4 and an upper part of which is opened and a cover body 6 to close an opening of the trough main body, and it is free to be extended by respectively connecting the trough main bodies 5 and the cover bodies 6. In this case, the main body 5 and the cover body 6 are respectively formed of a synthetic resin, engagement projected parts 7 etc., extending the longitudinal direction are provided on upper end parts of both of the side walls 2, 3 of the trough main body 5 and engagement grooves 9, 10 free to be engaged with the engagement projected parts 7 etc., to spring on left and right ends of the cover body 6 respectively. As engagement grooves 9, 10 of the cover body 5 and the engagement projected parts 7 etc., of the trough main body 5 are firmly engaged with each other in a state where the cover body 6 is fixed on the trough main body 5, it is impossible to easily remove the cover body even when strong force is applied on the cover body from outside and possible to provide high airtightness.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trough for accommodating cables and the like, and more particularly to a trough for accommodating a power transmission cable and the like which is arranged beside a railway track.

[0002]

2. Description of the Related Art Conventionally, a trough of this type has a trough body having left and right side walls and a bottom wall and having an open top, and a lid for closing the opening of the trough body. For this purpose, the trough body and the lid body can be connected to each other and can be extended, and the trough body and the lid body are each made of concrete, and the lid body is placed on the trough body and the opening is closed. Is generally known.

[0003]

However, in the case where the lid is merely placed on the trough body as in the above prior art, the concrete lid can be easily removed, and the stored cables and the like can be easily removed. However, there is a problem that it is impossible to prevent the player from being tampered with. In addition, for troughs that are placed beside railway tracks and connect and extend concrete trough bodies and lids to store power transmission cables, etc. When each lid is fixed using some fixing means, it is necessary to fix the trough body and each lid using the fixing means each time the trough body and the lid are connected and extended. Since the work is performed over a long distance, the fixing work is complicated, and there is a problem that the efficiency of the work of installing a trough for laying power transmission cables and the like is low.

The present invention has been made in view of such conventional problems, and its object is to prevent the cables and the like to be stored from being tampered with, to improve the waterproofness and to improve the installation work efficiency. It is to provide a trough aiming at.

[0005]

According to a first aspect of the present invention, there is provided a trough body having left and right side walls and a bottom wall and having an open top and an opening of the trough body. It is a trough that can be extended by connecting the trough bodies and the lid bodies to each other to store cables and the like, and the trough body and the lid body are formed of synthetic resin, respectively, An engaging groove extending in the longitudinal direction of the trough main body is provided on one of the upper end portions of both side walls and the left and right ends of the lid corresponding to the upper end portions, and the other side is resiliently engaged with the engaging groove. It is characterized in that engagement protrusions that can be engaged are provided. According to such a configuration, one of the engaging groove or the engaging protrusion provided on one of the left and right ends of the lid body is the other of the engaging groove or the engaging protrusion provided on the upper end of one of the side walls of the trough body. When a strong pressing force is applied to the other of the left and right ends of the lid from above in a state where the lid is engaged, one of the engagement grooves or engagement projections provided on the other of the left and right ends of the lid is formed in the trough body. The lid is resiliently engaged with the other of the engagement groove or the engagement projection provided at the other upper end of the both side walls, and the lid is fixed to the trough body. In this fixed state, one of the engagement groove or the engagement projection provided on the lid body side and the other of the engagement groove or the engagement projection provided on the trough main body side are firmly engaged. The lid cannot be easily removed even if a strong force is applied from the outside, and high confidentiality can be obtained. Also, when connecting and extending the trough bodies and the lids respectively to accommodate power transmission cables and the like, one of the engagement grooves or engagement projections provided on one of the left and right ends of the lid. In a state in which it is engaged with the other of the engagement groove or the engagement protrusion provided at one upper end of both side walls of the trough body, and only applying a strong pressing force from above to the other of the left and right ends of the lid body. For example, the lid can be easily fixed to the trough body simply by the operator riding on the other end of the lid and adding the weight to the other end. Therefore, it is not necessary to fix the trough main body and the lids using the fixing means each time the trough main bodies and the lids are connected and extended as in the above-described conventional technique.

In the invention according to a second aspect, an engaging groove extending in the width direction is formed at one end of the trough main body, and an engaging protrusion engaging with the engaging groove at one end is formed at the other end. Further, an engaging groove extending in the width direction is formed at one end of the lid, and an engaging protrusion engaging with the engaging groove at one end is formed at the other end. According to such a configuration, when connecting trough bodies having the same shape, by engaging the engagement protrusion on the other end side of the other trough body with the engagement groove on one end side of the one trough body, The two trough bodies can be connected so as not to shift in the longitudinal direction. Further, when connecting lids having the same shape, two lids are engaged by engaging an engagement projection on the other end of the other lid with an engagement groove on one end of the other lid. Can be connected so as not to shift in the longitudinal direction.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a trough according to the present invention. FIG. 1 is an exploded perspective view showing an example of a trough according to the present invention, and FIG. 2 is a perspective view of the trough main body shown in FIG. 1 as viewed from the opposite side to FIG. FIG. 3 is a cross-sectional view showing a state where the lid is fixed to the trough main body, FIG. 4 is a perspective view showing a state where two trough main bodies are connected, FIG. 5 is a vertical cross-sectional view of FIG. Is a perspective view showing a state in which two lids are connected, and FIG. 7 is a cross-sectional view showing a joint portion between the two lids shown in FIG. In this specification, the term "trough" is used to mean a container having a long and narrow groove such as a U-shape for storing a cable or the like.

As shown in FIG. 1, the trough 1 has left and right side walls 2 and 3 and a bottom wall 4 and has a trough body 5 having an open upper part, and a lid 6 for closing the opening of the trough body 5. Consists of
The trough 1 can be extended by connecting the trough main bodies 5 and the lids 6, respectively, in order to accommodate a power transmission cable or the like which is arranged beside a railroad track.

The trough body 5 and the lid 6 are each formed of a synthetic resin. As shown in FIGS. 1 to 3, engagement protrusions 7, 8 extending in the longitudinal direction of the trough main body 5 are provided at upper end portions of both side walls 2, 3 of the trough main body 5, respectively. On the other hand, the right and left ends of the lid 6 corresponding to the upper ends of both side walls 2 and 3 of the trough main body 5 are provided with engaging grooves 9 which can resiliently engage with the engaging projections 7 and 8 of the trough main body. , 10 are provided.

An engagement protrusion 11 for preventing lateral displacement extending in the width direction is formed on one end of the trough main body 5 (see FIG. 1), and the other end is engaged with the engagement protrusion 11 on one end. An engaging groove 12 for preventing lateral displacement is formed (see FIG. 2). Also, on one end side of the trough body 5, both side walls 2, 3 are provided.
And a fitting projection 15 having a profile smaller than the profile formed on each outer surface of the bottom wall 4, and a fitting recess 16 in which the fitting projection 15 fits is formed on the other end side. . The engagement protrusion 11 for preventing lateral displacement is formed at the bottom of the fitting protrusion 15, and the engagement groove 12 for preventing lateral displacement is formed at the bottom of the fitting recess 16.

As shown in FIGS. 1, 6 and 7,
At one end of the lid 6, an engagement protrusion 13 for preventing lateral displacement extending in the width direction is provided, and at the other end, an engagement groove 14 for preventing lateral displacement to be engaged with the engagement protrusion 13 at one end is provided. Each is formed.

In the trough 1 having such a configuration, the engagement groove 9 on one of the left and right ends (for example, the left end) of the lid 6 is engaged with the engagement projection 7 on the left side wall 2 of the trough body 5. Then, when a strong pressing force is applied to the right end of the lid 6 from above (for example, when an operator rides on the right end of the lid 6 and adds his weight), the right end of the lid 6 is elastically deformed and engaged. The mating groove 10 resiliently engages with the engaging projection 8 of the right side wall 3 of the trough main body 5, whereby the lid 6 is fixed to the trough main body 5 (see FIG. 3). In this fixed state, the engagement grooves 9 provided on the lid 6 side,
10 and the engaging projections 7 and 8 provided on the trough main body 5 side are firmly engaged, and the lid 6 is easily removed from the trough main body 5 even when a strong force is applied to the lid 6 from the outside. And high airtightness can be obtained. Therefore, it is possible to prevent the cables and the like housed in the trough 1 from being tampered and to improve the waterproofness.

Further, the trough bodies 5 of the same shape are connected to each other as shown in FIGS. 4 and 5 to accommodate a power transmission cable and the like, and the lids 6 of the same shape are connected to each other in FIG.
When the trough 1 is extended by connecting as shown in FIG. 7, the engaging groove 9 provided at one of the left and right ends (for example, the left end) of the lid 6 is formed at the upper end of the left side wall 2 of the trough body 5. Engaging projection 7
In this state, the lid 6 can be easily fixed to the trough main body 5 only by applying a strong pressing force from above to the right end of the lid 6. Therefore, it is not necessary to fix the trough main bodies 5 and the lids 6 by using the fixing means every time the trough main bodies 5 and the lids 6 are connected to each other and extended as in the related art. Therefore, it is possible to improve the installation efficiency of the trough.

When the trough bodies 5 are connected to each other, as shown in FIGS. 4 and 5, the engagement protrusion 11 on one end of one trough body 5 is connected to the other end of the other trough body 5. By engaging with the engagement groove 12, the two trough bodies 5 can be connected so as not to be shifted in the longitudinal direction.
When the lids 6 are connected to each other, as shown in FIGS. 6 and 7, the engagement projection 13 on one end of one lid 6 is engaged with the engagement groove on the other end of the other lid 6. By the engagement of 14, the two lids 6 can be connected so as not to shift in the longitudinal direction.

In this embodiment, the engaging projections 7 and 8 are provided on the trough main body 5 side, and the engaging grooves 9 and 10 which resiliently engage with the engaging projections 7 and 8 are provided on the lid 6 side. However, conversely, an engagement groove may be provided on the trough body 5 side and an engagement protrusion may be provided on the lid 6 side.

Further, in this embodiment, instead of forming the engagement projections 11 for preventing the trough main body 5 from laterally displacing at the bottom of the engagement projection 15, both sides or one side of the engagement projection 15 are provided. May be formed. In the case of such a configuration, the engagement grooves 12 for preventing lateral displacement shown in FIG. 2 are formed on both sides or one side of the fitting recess 16.

[0017]

As described above, according to the trough according to the first aspect, one of the engagement groove or the engagement protrusion provided on the lid body side and the engagement groove or the engagement provided on the trough body side. Since the other end of the projection is firmly engaged, the lid cannot be easily removed even if a strong force is applied to the lid from the outside, and high confidentiality can be obtained. Therefore, it is possible to prevent a cable or the like housed in the trough from being tampered and to improve waterproofness. Also, when connecting and extending the trough bodies and the lids to each other to accommodate power transmission cables and the like, the trough bodies and the lids are connected to each other and extended as in the above-described prior art. The work of fixing the trough main body and each lid using the fixing means for each time becomes unnecessary, and the efficiency of the trough installation work can be improved.

According to the second aspect of the present invention, when connecting the trough bodies having the same shape, the two trough bodies can be connected so as not to be shifted in the longitudinal direction, and the lid having the same shape can be connected. When connecting the bodies, the two lids can be connected so as not to shift in the longitudinal direction.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an example of an embodiment of a trough according to the present invention.

FIG. 2 is a perspective view of the trough main body shown in FIG. 1 viewed from the opposite side, with a part thereof omitted.

FIG. 3 is a cross-sectional view showing a state where the lid is fixed to the trough main body.

FIG. 4 is a perspective view showing a state where two trough bodies are connected.

FIG. 5 is a longitudinal sectional view of FIG.

FIG. 6 is a perspective view showing a state where two lids are connected.

FIG. 7 is a sectional view showing a joint portion between the two lids shown in FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Trough 2, 3 Side wall 4 Bottom wall 5 Trough main body 6 Lid body 7, 8 Engagement projection 9, 10 Engagement groove 11 Engagement projection for lateral displacement prevention 12 Engagement groove for lateral displacement prevention 13 For lateral displacement prevention Engagement projection 14 Engagement groove for preventing lateral displacement

Claims (2)

[Claims] 1. A trough body having left and right side walls and a bottom wall and having an open top, and a lid for closing the opening of the trough body. The trough bodies and a lid for storing cables and the like. A trough that can be connected to each other and extendable, wherein the trough body and the lid are each formed of a synthetic resin,
An engaging groove extending in the longitudinal direction of the trough main body is provided on one of the upper end portions of both side walls of the trough main body and the left and right ends of the lid corresponding to the both upper end portions, and an engaging groove is provided on the other side. A trough, wherein each of the projections is provided with a resiliently engageable engaging projection. 2. An engaging groove extending in the width direction is formed at one end of the trough main body, and an engaging protrusion engaging with the engaging groove at one end is formed at the other end of the trough main body. The trough according to claim 1, wherein an engagement groove extending in the width direction is formed on one end side, and an engagement protrusion engaging with the engagement groove on one end side is formed on the other end side.