JP3955073B2 - Silent side groove - Google Patents

Description

  The present invention relates to a concrete side groove with a lid disposed along an edge of a road, and more particularly to a silent side groove capable of preventing noise from being generated when a vehicle or the like passes.

2. Description of the Related Art Conventionally, a concrete side groove with a lid disposed along an edge of a road has a structure in which a lid is covered and closed on a lid hanging portion of a side groove main body. In the concrete side groove main body and the lid body, a gap is generated between the lid body and the side groove main body or between adjacent lid bodies in the installation work of the lid body. For this reason, every time the vehicle passes over the lid body, the lid body moves back and forth and right and left, and there is a problem that noise is generated by colliding with the side groove body and the adjacent lid body. In addition, even if the lid body and the side groove main body are made with high accuracy so that the lid body does not move back and forth or left and right, if the lid body bounces due to a strong impact while passing through the vehicle, the side groove body In addition, there is a problem that noise occurs due to collision with an adjacent lid. In particular, on roads where traffic is heavy and vehicles frequently pass, if the lid does not fit into the gutter body, not only loud noise will be generated, but the weight of the vehicle will become a heavy load, and the lid or gutter body will be damaged. There was also the problem of doing.
Various studies have been made to solve such problems.
For example, in (Patent Document 1), “a buffer body is placed on the upper surface of the opening of the side groove main body, and a lid mounted on the opening is received and inserted between the two. An engaging recess is formed on the upper surface of the side wall body to be placed, and a locking protrusion is provided on the lower surface of the buffer body to fit and lock the engaging recess, so that the upper surface of the opening and the lid are in contact with each other. A concrete side groove with a lid configured to prevent falling off between the contact portions is disclosed.
In addition, (Patent Document 2) states that “an engagement body that is disposed in an engagement state in an engagement recess disposed in an opposed state and engages two engagement objects with each other, and an outer peripheral surface of the engagement body halfway. A cushion / soundproof body having a hook-shaped piece at least part of which protrudes outward in a hook-like shape, and the hook-shaped piece is disposed between the contact surfaces of the two engagement objects. An engagement / buffer / soundproofing device characterized by comprising "is disclosed.
JP 2001-214506 A JP 2004-308326 A

However, the above conventional techniques have the following problems.
(1) In (Patent Document 1), by inserting a buffer body between the side groove main body and the lid body, the gap formed between the two is filled, avoiding a direct collision, and generating noise and breakage. Although the lid is only held by frictional force with the shock absorber, the lid and the shock absorber or the shock absorber and the gutter body are not directly fixed. It was easy and had the subject that generation | occurrence | production of the noise by contact with an adjacent cover body or a side groove | channel main body cannot be prevented completely. Moreover, since it had to arrange | position a cover body after mounting a buffer body in the upper surface part of a side wall main body at the time of construction, it had the subject that man-hours took and workability was lacking. Furthermore, foreign objects such as pebbles are easy to enter inside the engaging recess formed on the upper surface of the side wall body, and when the shock absorber is placed, the locking protrusion provided on the lower surface of the shock absorber becomes the engaging recess. The surface of the buffer body is not fully settled, and irregularities are generated on the surface of the buffer body. A gap is partially generated between the cover body and the buffer body, and the lid body tilts or jumps up when the vehicle passes through. There was a problem that breakage occurred.
(2) In (Patent Document 2), it is necessary to attach the engaging bodies to the engaging recesses of the engagement object one by one, and there is a possibility of forgetting to attach the engaging bodies while lacking workability. Has a problem that rattling occurs in the engagement object, and noise and breakage are likely to occur. In addition, when foreign matter such as pebbles enters the recess for engagement, the engagement body rises or tilts, resulting in a non-uniform gap between the contact surfaces of the engagement objects. Engagement objects contact each other, and there is a problem that noise and breakage occur.

  The present invention solves the above-described conventional problems, and can be easily positioned and held at a predetermined position simply by covering the lid body with the side groove main body. Providing silent side grooves with excellent workability, reliability, and durability that prevent the main body and adjacent lids from coming into contact with each other and prevent noise and damage to the lid even if a vehicle passes. The purpose is to do.

In order to solve the above problems, the silent side groove of the present invention has the following configuration.
The silent side groove according to claim 1 of the present invention is a silent side groove made of concrete that covers the lid body on the upper surface of the lid portion of the side groove body and closes the inside of the groove, and the upper side of the lid portion of the side groove body. and buried buried portion, a cylindrical spring arms extending設又is projected from disposed to the lid takes the upper surface on the embedded portion, the type of concave stripes formed on the lower end outer periphery of the spring arms comprising a shock absorbing member having a frame engaging portion, of the elastic protrusions impact absorbing member fitting hole formed only near the mold engaging portion of the lower side mold of the side groove body The diameter is larger than the hole diameter, and the tip end side has a configuration formed to have an outer diameter substantially equal to the shock absorbing member mounting hole .
This configuration has the following effects.
(1) Since the impact absorbing member is embedded in the cover groove upper surface side of the side groove main body at the embedded portion and integrated with the side groove main body, it is not necessary to attach the shock absorbing member during construction on site, It is easy to handle and excellent in reliability without forgetting to attach the shock absorbing member or dropping off the shock absorbing member.
(2) Since the elastic projecting portion extending or disposed on the buried portion of the impact absorbing member projects from the upper surface of the lid portion of the side groove body, the elastic projecting portion of the elastic projecting portion can be obtained simply by placing the lid from above. The upper end surface can be brought into contact with the bottom surface of the lid body to be surely supported, and the bottom surface of the lid body and the top surface of the lid hanging portion of the side groove main body are not in direct contact with each other. The elastic projecting portion can be compressed and deformed to absorb the weight.
(3) Since the bottom surface of the lid is only supported by the elastic protrusion of the shock absorbing member, the lid can be easily attached and detached, between the bottom surface of the lid and the upper surface of the lid portion of the gutter body. Even if foreign matter such as pebbles or earth and sand enters, it can be easily removed and the maintenance is excellent.
(4) By forming a concave formwork engaging portion on the outer periphery on the lower end side of the elastic protrusion of the impact absorbing member, when the embedded portion of the impact absorbing member is embedded in the side groove body and molded, it is possible to reliably fix the absorbing member into a mold, the position of the horizontal direction and the height direction of the positioning accuracy can be improved, the lid body and the gutter body and the adjacent lid bodies of the impact absorbing member relationship properly can guarantee two things, productivity, excellent reliability.
(5) The elastic protrusion is formed only in the vicinity of the lower end side of the mold engaging portion larger than the diameter of the shock absorbing member mounting hole, and the tip side is formed with an outer diameter substantially equal to the shock absorbing member mounting hole. by the impact absorption member when demolding the mold or after the molding time of mounting the shock absorbing member mounting hole, without the rigidity of the tip end of the impact absorbing member is in the way, with the mold both the can be attached and detached work easily, it can be securely fixed to the shock-absorbing member mounting hole in the large-diameter portion.
(6) By holding the embedded portion side and twisting the shock absorbing member and inserting the elastic protrusion into the shock absorbing member mounting hole , the mold engaging portion is engaged with the shock absorbing member mounting hole, and the large diameter portion shock absorption member and the mold is firmly fixed.

Here, the shock absorbing member is disposed at a position corresponding to at least four corners of the lid. An impact absorbing member can be added at an arbitrary position in the longitudinal direction according to the dimensions of the lid.
The elastic protrusion of the shock absorbing member can be elastically deformed and absorb its weight when a load such as a vehicle is applied to the lid, thereby preventing the bottom surface of the lid from contacting the top surface of the lid portion of the side groove body. Any material having elasticity and rigidity may be used. Specifically, an elastic body such as hard natural rubber or synthetic rubber, a synthetic resin, or a spring such as a leaf spring or a coil spring made of aluminum or stainless steel is preferably used. The impact absorbing member is preferably one in which the embedded portion and the elastic protrusion are integrally formed of the same material from the viewpoint of workability, but when the elastic protrusion is made of natural rubber, synthetic rubber, synthetic resin, etc. An elastic protrusion formed in a columnar shape, a prismatic shape, or the like may be fixed to the upper surface of a buried portion formed of a metal such as stainless steel in a columnar shape, a prismatic shape, or the like by bonding or the like.

As the synthetic resin, those having appropriate elasticity and weather resistance are preferable. For example, fluorine resin (FR), modified polyphenylene ether (modified PPE), polyamideimide (PAI), acrylonitrile butadiene styrene (ABS), high impact polystyrene (HIPS). Etc.) are preferably used.
Moreover, when an elastic protrusion part is a spring, it can fix to the upper surface of the above-mentioned metal embedment part by welding or the like. In particular, in the case of a coil spring, the embedded portion may be formed in a hollow bottomed cylindrical shape and may be accommodated in the embedded portion (hollow portion) so that the upper portion protrudes.
Even if the buried portion of the shock absorbing member is buried on the bottom side of the lid and the lid and the shock absorbing member are integrally formed, the same effect as when the side groove main body and the shock absorbing member are integrally formed can be obtained. Can do. In particular, when the lid and the impact absorbing member are formed integrally, it is excellent in workability and universality because it is not necessary to position the lid simply by placing the lid on the top surface of the lid portion of the side groove body.
The width of the groove of the mold engaging portion is formed to 1 mm to 2 mm according to the thickness of the mold. Further, the depth of the concave stripe of the mold engaging portion is preferably 0.5 mm to 1.5 mm. The depth of the recess in the mold engaging portion is 0 . As shallower than 5 mm, the impact absorbing member fitting hole formed shock absorbing member in a mold tends to be difficult to securely hold, as the deeper than 1.5 mm, the stiffness of the shock absorbing member attachment to the shock absorbing member mounting hole tends to become difficult, both undesirable by.
When the elastic protrusion is made of rigid rubber or soft synthetic resin, metal is preferably used as the material of the mold , and when the elastic protrusion is metal, rubber or the like is used as the material of the mold. Are preferably used . As a result, either the elastic protrusion or the mold is elastically deformed, and the shock absorbing member can be easily attached to the mold and the mold after the molding can be easily removed, and the workability is excellent.

A second aspect of the present invention is the silent side groove according to the first aspect, wherein at least the elastic protrusion of the shock absorbing member is made of hard rubber.
With this configuration, in addition to the operation of the first aspect, the following operation is provided.
(1) Since at least the elastic protrusion of the impact absorbing member is made of hard rubber, the lid can be held at a desired position by the frictional force of the surface of the elastic protrusion, and displacement can be prevented.
(2) Since the elastic protrusion is made of hard rubber, even when a vehicle or the like passes, the lower surface of the lid body and the upper surface of the lid hanging portion of the side groove main body can be prevented from being hit, and the distance between both can be maintained.
Here, natural rubber (NR), nitrile rubber (NBR), chloroprene rubber (CR), silicone rubber (VMQ), ethylene propylene rubber (EPDM) or the like is preferably used as the material of the elastic protrusion.
When the entire surface of the elastic protrusion is formed into a subarc-shaped convex or concave shape, the surface of the elastic protrusion is crushed and deformed into a flat shape when it comes into contact with the back surface of the lid even if a vehicle or the like passes. Since the contact area is enlarged, the frictional force is increased and the lid can be reliably held at a predetermined position. Alternatively, the surface of the elastic protrusion may be roughened to form a plurality of uneven portions to increase the frictional force.

The invention according to claim 3 of the present invention is the silent side groove according to claim 1 or 2, wherein the shock absorbing member is formed on the bottom surface of the lid body at a depth shallower than the height of the elastic protrusion. It has the structure provided with the fitting recessed part by which the front-end | tip part of the said elastic protrusion part is fitted.
With this configuration, in addition to the operation of the first or second aspect, the following operation is provided.
(1) Since the fitting recess into which the tip of the elastic projection of the shock absorbing member is fitted is formed on the bottom surface of the lid, the lid is adjusted by aligning the position of the fitting depression with the position of the elastic projection. By simply covering the lid on the upper surface of the hanging part, the lid can be positioned and fixed easily and securely and held at a predetermined position and height. The lid and the side groove body and adjacent lids are in contact with each other. Thus, it is possible to reliably prevent noise and damage to the lid.
(2) Since the fitting recess is formed on the bottom surface of the lid body at a depth shallower than the height of the elastic projection of the shock absorbing member, the bottom surface of the lid body is covered with the side groove body. When the vehicle or the like passes through without directly contacting the upper surface of the lid portion of the side groove main body, the elastic protrusion of the impact absorbing member can compress and deform to absorb the weight.
(3) Since the tip of the elastic protrusion of the shock absorbing member is only fitted into the fitting recess of the lid, the lid is easy to attach and detach, and the lid is removed to clean the inside of the groove or use a tool. The lid can be replaced without any problems, and the maintenance is excellent.
(4) Since the fitting recess is formed on the bottom surface of the lid body, foreign matter such as pebbles can be prevented from entering the fitting recess, and the tip of the elastic protrusion of the shock absorbing member is surely inserted into the fitting recess. The lid can be held horizontally with respect to the side groove main body, so that when the vehicle or the like passes, the weight is absorbed, and the lid and the side groove main body or adjacent lid bodies are It is possible to reliably prevent contact.

Here, the depth of the fitting recess is formed shallower than the height of the elastic protrusion of the shock absorbing member. However, even when the weight of the vehicle is applied to the lid and the shock absorbing member is compressed and deformed, the bottom of the lid The depth of the fitting recess and the height of the elastic protrusion are set so that a gap can be maintained between the upper surface of the side groove body and the upper surface of the lid portion of the side groove body. Thereby, the bottom surface of the lid body and the top surface of the lid hanging portion of the side groove main body do not come into contact with each other when the vehicle passes.
It is preferable to form a gap of 2 mm to 4 mm between the inner periphery on the bottom side of the fitting recess and the outer periphery of the tip of the elastic protrusion of the shock absorbing member. As this gap becomes smaller than 2 mm, it tends to be difficult to fit the elastic protrusion into the fitting recess, and as the gap becomes larger than 4 mm, the lid tends to become loose (displacement). There is a tendency that the contact between the lid body and the side groove main body or the adjacent lid body tends to occur, which is not preferable. By setting this gap to 2 mm to 4 mm, when the elastic protrusion is deformed, the gap can be filled by expansion to prevent the positional displacement and inclination of the lid body, and the lid body and the side groove body and the adjacent lid body Can be prevented.

  Further, it is preferable to form a gap of 2 mm to 4 mm between the side surface of the lid body and the side surface of the lid hanging portion of the side groove main body and between the end surfaces of the adjacent lid bodies. As these gaps become smaller than 2 mm, there is a tendency that when the lid rattles, the lid and the side groove main body or an adjacent lid body tend to be contacted. There is a tendency that foreign matters such as sand and earth easily enter and maintenance properties tend to be lowered, both of which are not preferable. By setting these gaps to 2 mm to 4 mm, it is possible to absorb errors in the positions and dimensions of the impact absorbing member and the fitting recess, and the load is concentrated on either the front or rear or the left or right of the lid. Even when the body is tilted, it is possible to reliably prevent the side surface of the lid body from contacting with the side surface of the lid portion of the side groove body and the end surfaces of the lid body.

The fitting recess preferably forms a taper angle that widens toward the bottom surface of the lid in consideration of the material of the mold. Thereby, after a shaping | molding, a mold can be easily demolded and it is excellent in a moldability. For example, the taper angle is preferably 1 to 3 degrees when the mold is made of rubber having elasticity, and preferably 1 to 5 degrees when the mold is made of metal having rigidity. However, it is not limited to these values, and can be appropriately selected depending on the material of the mold, the hole diameter, the depth of the fitting recess, and the like.
In the case where the buried portion of the shock absorbing member is buried on the bottom surface side of the lid and the lid and the shock absorbing member are integrally formed, a fitting recess may be formed on the upper surface of the lid hanging portion. The same effect can be obtained only by reversing the upper limit relationship between the impact absorbing member and the fitting recess. Further, even when foreign matter such as pebbles or earth and sand enters the fitting recess, the fitting recess is shallow and expands upward, so that it can be easily swept away and is excellent in maintainability.
When convex and / or concave ridges are formed on the outer periphery of the buried part, the buried shock absorbing member can be integrated with the gutter body and lid by the anchor effect, and can be firmly fixed to prevent falling off. Excellent reliability and durability.
Here, any number of ridges and ridges can be formed at arbitrary intervals. Moreover, you may form a discontinuous convex part and a recessed part at random instead of a continuous convex part and a concave part.

Method for producing a silent gutter according to claim 4 of the present invention, wherein the impact absorbing member fitting hole formed in the mold of the gutter body or the lid of any one of claims 1 to 3 claim 1 The shock absorbing member mounting step of engaging the mold engaging portion of the shock absorbing member and the concrete placing step of putting concrete into the mold are provided.
This configuration has the following effects.
(1) Since there is a shock absorbing member mounting step for engaging the mold engaging portion of the shock absorbing member with the shock absorbing member mounting hole formed in the side groove main body or the lid mold, the shock absorbing is positioned in advance. The impact absorbing member can be firmly fixed to the member mounting hole with high accuracy, and it has high quality and excellent productivity. (2) By putting concrete into the formwork in the concrete placing process, the buried part of the shock absorbing member can be buried and fixed in the concrete, and the side groove body or lid and the shock absorbing member are easily integrated. Therefore, it is excellent in long life and maintainability, and the maintenance cost can be reduced.
(3) Since the shock absorbing member is firmly held by elasticity at the formwork engaging portion, it is possible to prevent the shock absorbing member from coming off the shock absorbing member mounting hole against vibrations of a vibrator or the like during concrete placing.

  Here, as described above, the height of the mold engaging portion is matched with the thickness of the mold, and the hole diameter of the shock absorbing member mounting hole is made to match the outer diameter of the mold engaging portion. In the shock absorbing member mounting process, if the elastic protrusion is inserted into the shock absorbing member mounting hole while holding the buried portion side and twisting the shock absorbing member, the elastic protrusion is made of rigid rubber or soft synthetic resin and the mold is made of metal In the case of the product, the compressed elastic protruding portion expands after passing through the shock absorbing member mounting hole, and is firmly fixed to the shock absorbing member mounting hole at the mold engaging portion. Further, when the elastic protrusion is made of metal and the mold is made of rubber, the expanded shock absorbing member mounting hole contracts after passing through the elastic protrusion, and is firmly fixed to the mold engaging portion. Therefore, even when the concrete is thrown in the concrete placing process, the shock absorbing member is not inclined, misaligned, dropped off, etc., and the side groove main body or the lid and the shock absorbing member can be formed integrally. .

As described above, according to the silent side groove of the present invention, the following advantageous effects can be obtained.
According to invention of Claim 1, it has the following effects.
(1) By embedding the shock absorbing member embedded in the gutter body at the time of molding, it is not necessary to install the shock absorbing member at the time of construction in the field, or forgetting to install the shock absorbing member In addition, it is possible to provide a silent side groove that is easy to handle and excellent in reliability without dropping off the impact absorbing member.
(2) The lid can be reliably supported by the elastic projection by placing the lid from above on the elastic projection of the impact absorbing member protruding from the upper surface of the lid hanging portion of the gutter body. It is possible to prevent the bottom surface of the body and the top surface of the lid portion of the side groove body from coming into contact with each other, and when the vehicle or the like passes, the elastic protrusion of the shock absorbing member can compress and deform to absorb the weight. An excellent silent gutter can be provided.
(3) Since the bottom surface of the lid is only supported by the elastic protrusion of the shock absorbing member, the lid can be easily attached and detached, between the bottom surface of the lid and the upper surface of the lid portion of the gutter body. Even when foreign matter such as pebbles or earth and sand enters, it is possible to provide a silent side groove excellent in maintainability and workability that can be easily removed.
(4) engaged in molding the gutter body buried buried portion of the impact absorbing member, the mold engagement portions of the concave formed on the lower end outer periphery of the elastic collision out of the impact absorbing member into a mold since the shock absorbing member is engaged can be reliably fixed, the positioning accuracy in the horizontal direction and the height direction of the shock absorbing member can be oriented above the cover body and the gutter body and the adjacent lid bodies It is possible to provide a silent side groove excellent in productivity and reliability that can maintain the positional relationship appropriately .

According to invention of Claim 2, in addition to the effect of Claim 1, it has the following effects.
(1) Since at least the elastic protrusion of the impact absorbing member is made of hard rubber, the lid can be held at a desired position by the frictional force of the surface of the elastic protrusion, effectively preventing the occurrence of displacement. It is possible to provide a silent side groove with excellent reliability.
(2) Since the elastic protrusion is made of hard rubber, even if a vehicle or the like passes, the lower surface of the lid body and the upper surface of the lid hanging portion of the side groove main body are prevented from hitting, and the distance between them can be maintained with reliability. An excellent silent gutter can be provided.

According to invention of Claim 3, in addition to the effect of Claim 1 or 2, it has the following effects.
(1) By simply fitting the tip of the elastic protrusion of the shock absorbing member into the fitting recess formed on the bottom surface of the lid, the lid is positioned and fixed easily and securely held at a predetermined position. Because it is possible to reliably prevent the lid body and the side groove body and adjacent lid bodies from contacting each other to cause noise and damage to the lid body, it is possible to maintain aesthetics and improve the service life It is possible to provide a silent side groove excellent in performance and practicality.
(2) The depth of the fitting recess formed on the bottom surface of the lid is made shallower than the height of the elastic protrusion of the shock absorbing member, so that the lid is covered with the side groove body, The top surface of the lid part of the gutter body is not in direct contact, and when a vehicle or the like passes, the elastic projection of the shock absorbing member compresses and deforms to absorb weight and prevent noise generation It is possible to provide an excellent silent side groove.
(3) Since the tip of the elastic protrusion of the shock absorbing member is only fitted into the fitting recess of the lid, the lid is easy to attach and detach, and the lid is removed to clean the inside of the groove or use a tool. It is possible to provide a silent side groove excellent in maintainability and workability that allows the lid to be replaced without any trouble.
(4) Foreign matter such as pebbles can be prevented from entering the fitting recess formed on the bottom surface of the lid, and the end of the elastic protrusion of the shock absorbing member can be securely fitted into the fitting recess, and the side groove The lid can be held horizontally with respect to the main body, absorbs weight when a vehicle or the like passes, and reliably prevents noise generated by the lid and the side groove main body or adjacent lids contacting each other. It is possible to provide a silent side groove with excellent workability and reliability.

According to invention of Claim 4 , it has the following effects.
(1) With the shock absorbing member mounting step, the shock absorbing member mounting hole is previously engaged with the shock absorbing member mounting hole that has been drilled by positioning in the side groove main body or the mold of the lid. It is possible to provide a method for producing a silent side groove that can be firmly fixed and has high quality and excellent productivity.
(2) In the concrete placing process, the buried portion of the shock absorbing member can be buried and fixed in the concrete put into the mold, and the side groove body or lid and the shock absorbing member can be easily integrated and have a long service life. Therefore, it is possible to provide a method for manufacturing a silent side groove that is excellent in practicality and that can reduce the maintenance cost.
(3) Since the shock absorbing member is made of hard rubber and is firmly held by elasticity at the formwork engaging portion, the shock absorbing member mounting hole resists vibration of a vibrator or the like during concrete placement. It is possible to provide a method for manufacturing a silent side groove that is excellent in productivity and reliability that can be prevented from coming off.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment 1)
FIG. 1 is a perspective view of a main part showing a silent side groove in the first embodiment, and FIG. 2 is a cross-sectional side view showing the silent side groove in the first embodiment.
1 and 2, reference numeral 1 denotes a silence side groove made of concrete in the first embodiment, 2 denotes a side groove body of the silence side groove 1 having a substantially U-shaped cross section, and 2 a denotes a stepped shape that is one step lower on the inner side of the side groove body 2. 2b is the side surface of the lid groove portion 2 of the side groove body 2 facing the side surface 3b of the lid body 3, 2c is the top surface of the side groove body 2, and 3 is the side groove body 2. 3a is the bottom surface of the lid 3, 3b is the left and right side surfaces of the lid 3, 3c is the front and rear end surfaces of the lid 3, and 3d is the lid. The upper surface 3e of the body 3 is formed at the four corners of the bottom surface 3a of each lid 3, and is a substantially circular fitting recess in which a shock absorbing member 4 to be described later is fitted. The embedded portion is embedded in the lid portion of the side groove body 2 that is formed in a column shape, and the elastic projection portion protrudes from the upper surface 2a of the lid portion. A shock absorbing member formed integrally with the gutter body 2.
In the normal state, the upper surface 2c of the gutter body 2 and the upper surface 3d of the lid 3 are substantially flush with each other so that vehicles and others can pass smoothly.

Next, details of the fitting recess and the impact absorbing member will be described.
FIG. 3A is an enlarged cross-sectional side view of the main part showing the fitting recess of the silent side groove and the shock absorbing member in the first embodiment, and FIG. 3B is the shock absorbing member when the vehicle passes in the first embodiment. It is a principal part expanded sectional side view which shows the deformation | transformation state.
In FIG. 3, reference numeral 5 denotes an embedded portion of the shock absorbing member 4 embedded in the upper surface 2 a of the lid portion of the side groove body 2, 5 a denotes a concave portion formed on the outer periphery of the embedded portion 5, and 6 denotes an integral part of the embedded portion 5. An elastic protruding portion 6a of the shock absorbing member 4 which is formed and protrudes from the lid hanging portion upper surface 2a of the side groove main body 2 and has a tip portion fitted in the fitting concave portion 3e of the lid body 3, and 6a on the outer periphery on the lower end side of the elastic protruding portion 6. A concave mold engagement portion 6b having a depth of about 1 mm, and a large diameter portion 6b formed in the vicinity of the mold engagement portion 6a on the lower end side of the elastic protrusion 6.

In the present embodiment, the shock absorbing member 4 is arranged at a position corresponding to the four corners of the lid 3, but the shock absorbing member 4 can be added at an arbitrary position in the longitudinal direction according to the dimensions of the lid 3. .
In the shock absorbing member 4, the embedded portion 5 and the elastic protruding portion 6 are integrally formed of natural rubber (NR). However, the embedded portion 5 is formed of a metal such as iron or stainless steel, and the elastic protruding portion 6 is bonded to the upper surface thereof. It may be fixed by. Moreover, although the whole impact-absorbing member 4 was formed in the substantially cylindrical shape, it is not limited to this, For example, the whole may be formed in a substantially polygonal column shape etc., and the embedding part 5 is formed in a substantially polygonal column shape. Only the elastic protrusion 6 may be formed in a substantially cylindrical shape. As the material of the elastic protrusion 6, in addition to natural rubber (NR), rubber such as nitrile rubber (NBR), chloroprene rubber (CR), silicone rubber (VMQ), ethylene propylene rubber (EPDM), fluorine resin (FR), Synthetic resins such as modified polyphenylene ether (modified PPE), polyamideimide (PAI), acrylonitrile butadiene styrene (ABS), and high impact polystyrene (HIPS) may be used.
Further, a plate spring or a coil spring made of aluminum or stainless steel may be used for the elastic protrusion 6. In that case, the elastic protrusion 6 can be fixed to the upper surface of the metal buried portion 5 by welding or the like. When a coil spring is used as the elastic protrusion 6, the embedded portion 5 is formed in a hollow cylindrical shape having an anchor portion (unevenness) on the outer periphery, and the upper portion of the elastic protrusion 6 protrudes. You may make it accommodate in an inside.

  A gap of 2 mm to 4 mm (gap of 1 mm to 2 mm per side) was formed between the inner circumference of the bottom of the fitting recess 3 e and the outer circumference of the elastic protrusion 6 of the impact absorbing member 4. As this gap becomes smaller than 2 mm, it tends to be difficult to fit the tip of the elastic protrusion 6 into the fitting recess 3e, and as the gap becomes larger than 4 mm, the lid 3 becomes rattled (position shift). This is because there is a tendency that contact between the lid 3 and the side groove main body 2 or the adjacent lid 3 tends to occur. By setting this gap to 2 mm to 4 mm, as shown in FIG. 3B, when the vehicle passes and the elastic protrusion 6 is deformed, the gap is filled by expansion and the position of the lid 3 is changed. Inclination can be prevented, and contact between the lid 3 and the side groove main body 2 or the adjacent lid 3 can be prevented.

  Further, a gap of 2 mm to 4 mm was formed between the side surface 3 b of the lid body 3 and the lid-hanging portion side surface 2 b of the side groove main body 2 and between the end surfaces 3 c of the adjacent lid bodies 3. As these gaps become smaller than 2 mm, the lid 3 tends to easily come into contact with the side groove body 2 and the adjacent lid 3 when the lid 3 rattles, and as the gap becomes larger than 4 mm. This is because it has been found that foreign matters such as pebbles and earth and sand tend to enter from the gap. By setting these gaps to 2 mm to 4 mm, errors in the positions and dimensions of the shock absorbing member 4 and the fitting recess 3e can be absorbed, and a load is intensively applied to either the front or rear or the left or right of the lid 3. Even when the lid body 3 is inclined, the side surface 3b of the lid body 3 and the side surface 2b of the lid portion of the side groove body 2 and the end surface 3c of the lid body 3 can be reliably prevented from contacting each other.

The fitting recess 3e was formed to expand toward the bottom surface 3a of the lid 3 with a taper angle of 1 to 3 degrees. As the taper angle becomes smaller than 1 degree, it tends to be difficult to remove the mold after molding, and as the taper angle becomes larger than 3 degrees, the clearance of the elastic protrusion 6 of the shock absorbing member 4 becomes larger. This is because it has been found that the inclination of the lid body 4 tends to occur.
The depth of the fitting recess 3e is formed shallower than the height of the elastic protrusion 6 of the shock absorbing member 4 as shown in FIG. 3 (a). Even in a state in which the elastic protrusion 6 of the slab is compressed and deformed, a gap of 2 mm to 4 mm can be maintained between the bottom surface 3a of the lid 3 and the top surface 2a of the lid portion of the side groove body 2 as shown in FIG. The depth of the fitting recess 3e and the height of the elastic protrusion 6 were set. Thereby, the bottom surface 3a of the lid 3 and the lid hooking portion upper surface 2a of the side groove main body 2 do not come into contact with each other when passing a vehicle or the like, and noise can be reliably prevented.
In the present embodiment, one concave strip 5a is formed on the outer periphery of the buried portion 5 of the shock absorbing member 4, but a plurality of concave strips 5a are formed according to the outer diameter, height, etc. of the buried portion 5. Can be formed at arbitrary intervals. Further, instead of the concave strip portion 5a, a convex strip portion may be formed, or discontinuous convex portions and concave portions may be randomly formed.

Next, a method for manufacturing a silent side groove will be described.
4 (a) is an enlarged cross-sectional side view of the main part showing the shock absorbing member mounting step of the method for manufacturing the silent side groove in the first embodiment, and FIG. 4 (b) shows the method for manufacturing the silent side groove in the first embodiment. FIG. 4C is an enlarged cross-sectional side view of an essential part showing a concrete placing process, and FIG. 4C is an enlarged cross-sectional side view of an essential part showing a completed state of a side groove body of a silent side groove in the first embodiment.
In FIG. 4, 7 is a metal mold for forming the gutter body 2, 7 a is an impact absorbing member mounting hole drilled in the mounting position of the impact absorbing member 4 of the mold 7, and 8 is the mold 7. It is concrete thrown into the interior.

First, in the shock absorbing member mounting step shown in FIG. 4 (a), the elastic protrusion 6 is inserted into the shock absorbing member mounting hole 7a while twisting the shock absorbing member 4 while holding the embedded portion 5 side, thereby The joint portion 6a is engaged with the shock absorbing member mounting hole 7a, and the shock absorbing member 4 and the mold 7 are firmly fixed by the large diameter portion 6b.
Next, in the concrete placing step shown in FIG. 4 (b), the concrete 8 is put into the mold 7 to embed and fix the buried portion 5 of the shock absorbing member 4 in the concrete 8.
Finally, by removing the mold 7, it is possible to obtain the side groove body 2 in which the shock absorbing member 4 is integrated as shown in FIG.
The width of the mold engaging portion 6a and the thickness of the mold 7 were matched, and the diameter of the shock absorbing member mounting hole 7a was made to match the outer diameter of the mold engaging portion 6a. Thus, in the shock absorbing member mounting step, when mounting the shock absorbing member 4 in the shock absorbing member mounting hole 7a, the elastic member protrudes into the shock absorbing member mounting hole 7a while holding the buried portion 5 side and twisting the shock absorbing member 4. When the portion 6 is inserted, the large diameter portion 6b of the compressed elastic protruding portion 6 expands after passing through the shock absorbing member mounting hole 7a, and is firmly fixed to the shock absorbing member mounting hole 7a by the mold engaging portion 6a. Is done. Therefore, even when the concrete 8 is thrown in the concrete placing process, the shock absorbing member 4 is not tilted, displaced, or dropped off, and the side groove main body 2 and the shock absorbing member 4 can be formed integrally. it can.

Moreover, the depth of the groove of the mold engaging portion 6a was formed to be 0.5 mm to 1.5 mm. As the depth of the recess of the mold engaging portion 6a becomes shallower than 0.5 mm, it becomes difficult to securely hold the shock absorbing member 4 with the shock absorbing member mounting hole 7a formed in the mold 7. This is because it has been found that as the depth becomes deeper than 1.5 mm, the mounting of the shock absorbing member mounting hole 7a tends to become difficult due to the rigidity of the large diameter portion 6b of the shock absorbing member 4.
The distal end side of the elastic protrusion 6 was formed to have an outer diameter substantially equal to that of the shock absorbing member mounting hole 7a (see FIG. 3). Thereby, when the shock absorbing member 4 is mounted in the shock absorbing member mounting hole 7a or when the mold 7 is removed after molding, the rigidity on the tip side of the shock absorbing member 4 is not obstructed. 7 can be easily attached and detached.
The side groove body 2 is manufactured at the factory, and the shock absorbing member 4 can be positioned and fixed by the mold 7 so as to be formed integrally with the side groove body 2. Therefore, the dimensional management is easy, the yield is high, the quality is high, and the mass productivity is excellent.

As described above, the silent side groove in the first embodiment has the following effects.
(1) Since the impact absorbing member 4 made of hard rubber is embedded in the embedded portion 5 on the side of the lid hanging portion upper surface 2a of the side groove main body 2, and integrated with the side groove main body, the shock absorbing member 4 is used during construction on site. It is not necessary to attach the shock absorbing member 4, and the shock absorbing member 4 is not forgotten to be attached or the shock absorbing member 4 is not dropped off.
(2) Since the fitting recess 3e into which the tip of the elastic protrusion 6 of the shock absorbing member 4 is fitted is formed on the bottom surface 3a of the lid 3, the fitting recess 3e is formed at the position of the elastic protrusion 6. The lid 3 can be positioned and fixed easily and securely and held at a predetermined position simply by covering the lid 3 and covering the lid 3 on the lid hanging portion upper surface 2a. 2 and the adjacent lids 3 can be reliably prevented from coming into contact with each other and causing noise and damage to the lid 3.
(3) Since the fitting recess 3e is formed on the bottom surface 3a of the lid 3 at a depth shallower than the height of the elastic protrusion 6 of the shock absorbing member 4, the lid 3 is covered with the side groove body 2. In this state, the bottom surface 3a of the lid 3 and the lid hooking portion upper surface 2a of the side groove main body 2 are not in direct contact with each other, and when the vehicle or the like passes, the elastic protrusion 6 of the shock absorbing member 4 made of hard rubber is compressed and deformed. To prevent impact.
(4) Since the tip of the elastic protrusion 6 of the shock absorbing member 4 is merely fitted into the fitting recess 3e of the lid 3, the lid 3 can be easily attached and detached, and the lid 3 is removed to clean the inside of the groove. Or the lid 3 can be exchanged without using a tool, and the maintenance is excellent.
(5) Since the fitting recess 3e is formed on the bottom surface 3a of the lid 3, foreign matter such as pebbles can be prevented from entering the fitting recess 3e, and the shock absorbing member 4 can be securely attached to the fitting recess 3e. Since the front end of the elastic projection 6 can be fitted, the lid 3 can be held horizontally with respect to the side groove main body 2, and when the vehicle or the like passes, the weight is absorbed, and the lid 3 And the side groove main body 2 and the adjacent lids 3 can be reliably prevented from contacting each other.
(6) Since the recess 5a is formed on the outer periphery of the buried portion 5 of the shock absorbing member 4, the buried shock absorbing member 4 can be integrated with the side groove body 2 by the anchor effect, and firmly fixed. It can be prevented from falling off and has excellent reliability and durability.
(7) Since the concave frame engaging portion 6a is formed on the outer periphery on the lower end side of the hard rubber elastic protruding portion 6 of the shock absorbing member 4, the buried portion 5 of the shock absorbing member 4 is buried. Since the impact absorbing member 4 can be securely fixed to the mold 7 when the side groove body 2 is molded, the positioning accuracy of the impact absorbing member 4 in the horizontal direction and the height direction can be improved. 3 and the side groove main body 2 and the adjacent lids 3 can be properly maintained, and the productivity and reliability are excellent.

As described above, the method for manufacturing the silent side groove in the first embodiment has the following effects.
(1) Since there is a shock absorbing member mounting step for engaging the mold engaging portion 6a of the shock absorbing member 4 with the shock absorbing member mounting hole 7a formed in the mold 7 of the side groove main body 2, it is positioned in advance. The impact absorbing member 4 can be firmly fixed to the impact absorbing member mounting hole 7a with high accuracy, and the quality is excellent and the productivity is excellent.
(2) By putting the concrete 8 into the mold 7 in the concrete placing process, the buried portion 5 of the shock absorbing member 4 can be buried and fixed in the concrete 8, and the side groove main body 2 and the shock absorbing member can be easily fixed. 4 can be integrated, it is excellent in long-life property and maintainability, and the maintenance cost can be reduced.
(3) Since the shock absorbing member 4 is made of hard rubber and is firmly held by elasticity at the formwork engaging portion 6a, the shock absorbing member is mounted against vibration of a vibrator or the like when placing concrete. It can prevent coming off from the hole 7a.

(Embodiment 2)
FIG. 5A is a cross-sectional side view of the main part showing the cover of the silent side groove in the second embodiment, and FIG. 5B is a cross-sectional side view of the main part showing the silent side groove in the second embodiment.
In addition, the same code | symbol is attached | subjected to the thing similar to Embodiment 1, and description is abbreviate | omitted.
In FIG. 5, the silent side groove 11 in the second embodiment is different from the first embodiment in that the buried portion 5 of the shock absorbing member 4 a is buried in the bottom surface 3 a of the lid 13 and the lid 13 and the shock absorbing member 4 a are integrated. And the entire surface of the elastic protrusion 6 of the shock absorbing member 4a is formed in a recess having an inferior arc shape and is directly placed on the upper surface 2a of the lid portion of the side groove main body 12.

By forming the entire surface of the elastic protruding portion 6 of the shock absorbing member 4a into a concave arc-shaped concave shape, the surface of the elastic protruding portion 6 is crushed like a suction cup when it comes into contact with the lid upper surface 2a of the side groove main body 12. Since the contact area is increased and the contact area is increased, the frictional force is increased and the lid 13 can be reliably held. The entire surface of the elastic protrusion 6 may be formed into a subarc-shaped convex shape, or the surface may be roughened to form a plurality of concave and convex portions to increase the frictional force.
Moreover, you may form the fitting recessed part which fits the elastic protrusion part 6 in the cover hooking part upper surface 2a of the side groove | channel main body 12. FIG. At this time, only the positional relationship between the shock absorbing member 4a and the fitting recess is reversed upside down from the first embodiment, and the dimensional shape, material, and the like are the same as in the first embodiment. Since the depth of the fitting recess can be formed shallow, even if foreign matter such as pebbles or earth and sand enters the fitting recess, it can be easily swept away and excellent in maintainability.
The manufacturing method in the case of integrally forming the lid 13 and the shock absorbing member 4a is the same as the first embodiment except that the shape of the mold 7 is different.

As described above, the silent side groove according to the second embodiment has the following operation in addition to the operation of the first embodiment.
(1) Since the elastic protrusion 6 extending from the embedded portion 5 of the shock absorbing member 4a protrudes from the bottom surface 3a of the lid 13, the elastic protrusion 6 can be obtained simply by placing the lid 13 from above. The bottom surface 3a of the side groove main body 12 can be brought into contact with the lid upper surface 2a of the side groove main body 12 and can be reliably supported, and the bottom surface 3a of the lid body 13 and the lid upper surface 2a of the side groove main body 12 are not in direct contact with each other. Is passed, the elastic protrusion 6 of the shock absorbing member 4a can compress and deform to absorb the weight.
(2) Since the lid body 13 is only supported by the elastic protrusion 6 of the shock absorbing member 4a, the lid body 13 can be easily attached and detached, and the bottom surface 3a of the lid body 13 and the upper surface of the lid hanging portion of the side groove body 2 Even when a foreign object such as pebbles or earth and sand enters between 2a and the like, it can be easily removed and is excellent in maintainability.
(3) Since the elastic protrusion 6 of the shock absorbing member 4a is made of hard rubber, the lid 13 can be held at a desired position by the frictional force on the surface of the elastic protrusion 6 and displacement can be prevented.
(4) Since the elastic protrusion 6 is made of hard rubber, the lower surface 3a of the lid 13 and the lid upper surface 2a of the side groove main body 12 are prevented from coming into contact with each other even when a vehicle or the like passes. Can hold.

Examples of the present invention will be described below.
Example 1
First, a natural rubber (NR) impact absorbing member similar to that of Embodiment 1 was subjected to a normal test according to JIS K6250.
The measurement was performed on three items of hardness (JIS A), tensile strength, and elongation.
When the hardness (JIS A) was measured according to the test method of JIS K6253, the measured value was 68 (degrees) against the standard value of 70 ± 5 (degrees).
When the tensile strength was measured according to the test method of JIS K6251, the measured value was 18.3 (MPa) with respect to the standard value of 14.5 (MPa) or more.
When the elongation was measured according to the test method of JIS K6251, the measured value was 400 (%) against the standard value of 300 (%) or more.

Next, the elastic protrusion 5 of the impact absorbing member 4 having an outer diameter of 30 (mm) and a height of 27 (mm) is applied to the concrete having a diameter of 100 (mm) and a height of 200 (mm) by a height of 7 (mm). In accordance with the compression test method for concrete of JIS A1108, the impact absorbing member 4 was compressed and its shrinkage change was confirmed.
The compression amount of the elastic protrusion 5 was 4 mm with respect to a load of 50 kN to 55 kN. This is the amount of compression when a full load is applied to one point. Since the weight of the vehicle is dispersed to each tire when the vehicle passes through, the bottom surface 3a of the lid 3 and the side groove body in the deformed state due to the passage of the vehicle It has been found that the upper surface 2a of the cover portion 2 does not come into contact.

  In the present invention, the lid body can be easily positioned and held at a predetermined position simply by covering the side groove main body, so that the positional deviation hardly occurs, and the lid body and the side groove main body or adjacent lid bodies are in contact with each other. It is possible to provide silent side grooves that are excellent in workability, reliability, and durability so that noise and lid damage do not occur even when a vehicle or the like passes. The noise problem around the road can be solved reliably and effectively.

The principal part see-through perspective view which shows the silence side groove | channel in Embodiment 1. FIG. Sectional side view which shows the silence side groove | channel in Embodiment 1. FIG. (A) Main part enlarged sectional side view showing fitting concave part and impact absorbing member of silent side groove in Embodiment 1 (b) Main part enlarged sectional side view showing a deformed state of silent side groove in Embodiment 1 (A) Main part enlarged cross-sectional side view showing the shock absorbing member mounting step of the method for forming the side groove body of the silent side groove in Embodiment 1 (b) Concrete placement of the method for forming the side groove body of the silence side groove in Embodiment 1 Main part enlarged cross-sectional side view showing process (c) Main part enlarged cross-sectional side view showing a completed state of the side groove body of the silent side groove in the first embodiment (A) Main part sectional side view showing the cover of the silent side groove in the second embodiment (b) Main part sectional side view showing the silent side groove in the second embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,11 Silent side groove | channel 2,12 Side groove | channel main body 2a Lid cover part upper surface 2b Lid cover part side surface 2c Upper surface 3,13 Lid body 3a Bottom surface 3b Side surface 3c End surface 3d Upper surface 3e, 12a Fitting recessed part 4, 4a Shock absorbing member 5 Embedded part 5a Concave part 6 Protruding part 6a Formwork engaging part 6b Large diameter part 7 Formwork 7a Shock absorbing member mounting hole 8 Concrete

Claims (4)

A silencer side groove made of concrete that covers the lid on the upper surface of the lid portion of the side groove body and closes the inside of the groove, and is embedded in the upper surface side of the lid portion of the side groove body, and extends to the buried portion.設又is a cylindrical elastic protrusion is disposed projecting from the lid takes part top surface, a mold engagement portion of the concave stripes formed on the lower end outer periphery of the elastic protruding portion, the impact absorbing member having a The elastic protrusion is formed with a diameter larger than the diameter of the shock absorbing member mounting hole formed in the mold of the side groove main body only in the vicinity of the mold engagement portion on the lower end side, silence groove, characterized in that form shape to an outer diameter substantially equal to the impact absorbing member fitting hole. The silent side groove according to claim 1, wherein at least the elastic protrusion of the shock absorbing member is made of hard rubber. The fitting body according to claim 1, further comprising a fitting recess formed on a bottom surface of the lid body at a depth shallower than a height of the elastic protruding portion and fitted to a tip portion of the elastic protruding portion of the shock absorbing member. The silent side groove according to 1 or 2. Mold engaging portion shock absorbing engagement of the of claims 1 to 3 of any one gutter body or the lid of the mold to drilled impact absorbing member fitting hole in claim 1 of the shock absorbing member A silent side groove manufacturing method, comprising: a member mounting step; and a concrete placing step of pouring concrete into the mold.

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