JPH0530521U - Holding device for eyelet member in cover - Google Patents

Abstract

(57) [Summary] [Purpose] is intended to prevent the eyelet member from easily coming off when the cover is assembled and from deforming and coming out when the cover is attached and detached. [Configuration] Front and lower open vertical recesses 1 are formed at the end of the nozzle cover Nc, and downward taper protrusions 2c are formed at both ends of the open end at the lower end of the vertical recess 1. The U-shaped inward first brim 2a and the inward second brim 2b of the same shape which is close to the upper surface when the eyelet member is mounted on the first brim 2a.
And made of a flexible elastic material and has a constricted recess 3 along the circumference.
In addition, a pin insertion hole 3c is provided and a stiffening reinforcing plate 4 is fixed to the upper side, and locking step portions 3b are formed at lower portions on both sides of one end of the eyelet member. While the recess 3a is fitted into the first brim 2a, the first brim 2a
The taper protrusion 2c is locked to the locking step 3b of the eyelet member and attached to the cover.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a eyelet member holding device for detachably attaching to a counterpart member without using tightening means such as screws and clips.

[0002]

[Prior Art]

 In a recent vehicle diesel engine, the injection nozzle should be covered in order to reduce the noise emitted from the fuel injection nozzle N arranged on the cylinder head H as shown in FIG. 4 and the noise generated from the combustion chamber. A synthetic resin nozzle cover Nc is provided between the cylinder head cover Hc and the intake manifold M so as to be attached to the head cover and the manifold at a plurality of positions at both ends, and a fastening means such as a screw is used for the attachment. The following means are used to remove and install the nozzle cover without using tools when servicing the engine without using the.

That is, on one end side of the nozzle cover Nc (cylinder head cover side), a horseshoe shape is formed on the inner surface of the cover end as shown in FIG. 5, the cover end side is open, and a slit b ₂ is formed in the center of the bottom wall b _1. To form a bottom wall b ₁ into a U-shaped brim, and a plurality of bags b having a required height are provided at predetermined intervals (only one bag is shown in FIG. 5). The bottom wall b ₁ is made of an elastic material such as soft rubber and has a horseshoe shape, has a through hole a ₁ for the pin p in the central portion, and has a concavity recess a ₂ along the circumference. Are fitted in the concavities a ₂ of the constriction, and the eyelet members a are pushed into the pins p provided on the ends of the cylinder head cover Hc from above to be joined.

On the other end side (intake manifold side) of the nozzle cover Nc, as shown in FIG. 6, a plurality of vertical recesses d having a front semi-elliptical shape on the edge of the cover and having open front and bottom sides, Formed at predetermined intervals, each of the vertical recesses d is provided with an inward horizontal U-shaped overhanging collar e at the lower end thereof, and the eyelet member a is attached to each of the collars e. The concavity recess a ₂ is fitted and mounted from the front side, and each eyelet member a is pushed from above to be coupled to a pin p provided on the end of the manifold M.

[0005]

[Problems to be solved by the device]

By the way, the eyelet member a is made of an elastic material such as soft rubber or synthetic resin so as to absorb the vibration and sound of the engine, and the insertion hole a ₁ is pinned to eliminate rattling of the joint. Since the diameter is slightly smaller than that of the pin p so that it can be attached to the pin p in a compressed state, when the eyelet member a is pushed into the pin p, the lower part is often the head of the pin p as shown in FIG. pushed by the part bent deformation, by subsequent pushing action increases burr is open side portion as shown in FIG. 8, it will come out of the overhanging flange e or slits b ₂ of the bag vertical recess, and the engine maintenance Therefore, when the nozzle cover Nc is lifted and detached from the pin p, the upper portion of the eyelet member a is deformed and similarly detached.

Since the bag body b and the vertical recess d are open on the front side, if the cover is tilted during handling of the nozzle cover Nc, the eyelet member a is likely to come off the open end, and the cover assembly is assembled. It is difficult to do the attaching work.

Therefore, an object of the present invention is to prevent the eye member from inadvertently coming off when the cover is assembled, and to prevent the eye member from coming off due to deformation when the cover is attached and detached.

[0008]

[Means for Solving the Problems]

 Based on the above-mentioned object, the present invention provides a vertical recess or a bag body, which is opened at the end edge side and the lower side of the cover, at the end of the cover as a device for holding eyelet members in the cover. The bag body is provided with an inward first brim having downward taper protrusions on both sides of the open end and an inward second brim that is close to the upper surface when the eyelet member is attached, and is flexible. It is made of elastic material and has a constricted recess along the surrounding shape, and a pin insertion hole in the height direction.A stiffening reinforcing plate is fixed to the upper side of the eyelet member at the bottom of both ends. A locking step is formed, the constricted recess of the eyelet member is fitted to the first collar, and the taper protrusion of the first collar is locked to the locking step of the eyelet member. Is characterized by.

[0009]

【Example】

 Hereinafter, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows the other end portion of the nozzle cover Nc, that is, a part of the mounting end portion for the intake manifold M in a separated manner, wherein 1 is a vertical recess provided at the end edge of the cover at a plurality of intervals as described above. The front side and the lower side thereof are open, and a U-shaped first brim 2a that extends horizontally inward is provided at a predetermined height position of the lower end, and the opening side of the first brim 2a is On both sides of the end portion, downwardly provided taper protrusions 2c that are inclined so as to become thicker toward the inner end of the vertical recess, and on the upper side of the first brim 2a, there are fixed protrusions 2c. A second brim 2b of the same shape that extends horizontally inward is provided at a distance, that is, at a distance such that when the next eyelet member is attached to the first brim 2a, it approaches the upper surface thereof. Has been.

[0010] Reference numeral 3 is a main eyelet made of an elastic material such as soft rubber or synthetic resin, and has a shape of a front-rear circle in which the front part is square and the rear part is semicircular, but the front lower part is narrow. Is formed on both sides, and a locking step portion 3b is provided on both sides, and a concavity concave portion 3a is formed along the periphery in the center portion in the height direction so as to fit with the first flange 2a of the vertical concave portion 1 A pin insertion hole 3c in the height direction is provided in the central portion, and a perforated reinforcing plate 4 of the same shape having rigidity made of metal or a hard synthetic resin such as phenol or nylon is provided on the upper surface. Is stuck.

If the eyelet member formed as described above is fitted into the first collar 2a from the open end side of the vertical recess 1 of the cover, the necked recess 3a is formed. The downward taper protrusions 2c provided on both sides of the open side end of the first collar 2a gradually spread over the lower side and gradually pass over this to enter the vertical recess 1 as shown by the dotted line, and the collar of the collar is tapered. The projections 2c are respectively locked to the locking step portions 3b on both sides of the lower part of the eyelet member, and at this time, the tip of the constricted part of the eyelet member contacts the inner end of the first collar 2a, The eyepiece member is mounted so as not to come out of position, and the second collar 2b in the vertical recess 1 is close to the upper surface of the eyelet member.

FIG. 2 shows one end portion of the nozzle cover Nc, that is, a part of the mounting end portion to the cylinder head cover Hc, in a separated manner, and 5 is a horseshoe shape required to be provided on the lower surface of the end portion of the cover at a predetermined interval. In the bag body of height, the end edge side of the cover is opened, and the bottom wall has a slit 5d of a similar shape in the center portion to form a U-shaped inward first flange 5a. Tapered protrusions 5c are formed on both sides of the taper so as to become thicker toward the inner end of the bag body, and eyelets are provided on the upper side of the first collar 5a. A second collar 5b having the same shape and having an inward shape is provided at a distance so as to be close to the upper surface when mounted, and the first collar 5a is fitted with the concavity recess 3a of the eyelet member. In this way, the taper protrusion 5c is locked to the locking step 3b. The eyelet member is attached so that it does not come out of position, and the second flange 5b is located close to the upper surface of the eyelet member.

Thus, with the eyelet members attached to both ends of the nozzle cover Nc, the pin insertion holes 3c of each eyelet member are inserted into the pin p on the intake manifold M and the pin p on the cylinder head cover Hc. The nozzle cover Nc can be quickly mounted between the two by pushing in from above as shown in FIG. At this time, the upper surface of each eyelet member is immediately brought into contact with the second flanges 2b and 5b by pressing against the pin p, so that the deformation and drop of the first flanges 2a and 5a are prevented.

Further, in the mounted state of FIG. 3, by lifting both ends of the nozzle cover Nc upward, each eyelet member can be easily removed from the pin p. Since the reinforcing plate 4 having rigidity is fixed on the eye main body 3, the eyelet member is prevented from falling off without being deformed.

In the illustrated example, the case where the invention is applied to the nozzle cover of the engine has been described, but the application is not limited to this, and the invention is applied to a cover that facilitates attachment / detachment and prevents transmission of vibration and noise on the main body side. Further, the shape of the eyelet member, the bag body, and the brim of the vertical recess is not limited to those shown in the drawings, and other shapes (for example, a rectangle) can be selected.

[0016]

[Effect of the device]

 As described above, according to the present invention, as a device for holding the eyelet member that allows the cover to be attached and detached without using the tightening member, the vertical recess or bag provided at the end of the cover is provided at the open end thereof. The inward first flange with the downward taper protrusion and the inward second flange close to the upper surface of the eye member are provided, while they are made of a flexible elastic material and have a constricted recess along the periphery and a height direction. Has a pin insertion hole, and a stiffening reinforcing plate is fixed on the upper side, and locking step portions are provided on both lower sides of one end of the eyelet member. Since the taper protrusion of the first collar is locked to the locking step of the eyelet member while fitting into the collar, the eyelet member can be securely attached to the cover, and the cover is tilted during handling. Even so, the eye parts did not come off by mistake, and the cover was assembled. Work can be performed smoothly, and even if the cover member is pushed into or removed from the pin when the cover is attached or detached, the cover member can be securely prevented from deforming and falling off. Can be done quickly.

[Brief description of drawings]

FIG. 1 is a perspective view showing a holding device according to the present invention, in which a mounting portion for an intake manifold is separated.

FIG. 2 is an exploded perspective view of a mounting portion with respect to a cylinder head cover.

FIG. 3 is a cross-sectional view showing an attached state of a cover.

FIG. 4 is a sectional view of the upper part of the engine.

FIG. 5 is an exploded perspective view of a mounting portion to a cylinder head cover by a conventional holding device.

FIG. 6 is an exploded perspective view of a mounting portion to a suction manifold by a conventional holding device.

FIG. 7 is a front view showing a state when a pin of a conventional eyelet member is inserted.

8 is a sectional view taken along line XX of FIG.

[Explanation of symbols]

 1 Vertical recess 2a 1st brim 2b 2nd brim 2c Tapered projection 3 Main eyelet 3a Constriction recess 3b Locking step 3c Pin insertion hole 4 Reinforcing plate 5 Bag 5a 1st brim 5b 2nd brim 5c Taper Projection Nc Nozzle cover p Pin

Claims (1)

[Scope of utility model registration request] 1. An end of the cover is provided with a vertical recess or a bag body whose end edge side and lower side are opened, and the vertical recess or the bag body is provided with a downward taper protrusion on both sides of the open side end. An inward first collar having a portion and an inward second collar that is close to the upper surface of the eyelet member when the eyelet member is attached, and is provided with a constricted recess made of a flexible elastic material and conforming to the surrounding shape. A pin insertion hole in the height direction is provided, and a stiffening reinforcing plate is fixed on the upper side to form locking step portions on both lower sides of one end of the eyelet member. An eyelet member holding device for a cover, which is fitted to the first collar and has a taper protrusion of the first collar locked to a locking step of the eyelet member.