JPH0526328Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) This invention relates to a clamping device for firmly joining two members, such as the body and cover of an air cleaner, which need to be attached and detached from time to time.

(Prior art) For example, in an engine air cleaner, a clamp device is attached to the outer periphery of the main body and the cover to connect them, and the cover is made detachable or openable. I'm trying to take it out.

For example, in an air cleaner using a rectangular over-element as shown in Fig. 6, the under-element e is made by sealing the lower periphery of a required length of corrugated paper with an elastic packing material 3 such as urethane. Stepped box-like body 1 like A and B
one side edge is connected to the body 1 from above in an openable and closable manner, or a cover 2 is provided in a detachable manner, and the side edges of the two are fitted together and butted, and the step of the side edge of the body 1 is attached. The upper locking part of the clamp fitting 4 made of a bending member pivotally supported on the lower side is engaged with the side wall step part of the cover 2 to connect the body 1 and the cover 2. An over-element e' made of paper pleated into an annular shape with end plates attached to the upper and lower ends is housed in a dish-shaped body 1' which is attached to the intake pipe k as shown in Fig. 7.
A circular cover 2' is applied to this, and its peripheral edge is fitted and butted against the upper end of the peripheral wall of the body 1', and the center part is connected with bolts rising from the intake pipe k, and the lower end is attached to the side wall of the body at multiple points on the peripheral edge. The body 1' and the cover 2' are sealed by latching the upper end of the plate-shaped clamp fitting 4' which is engaged with the body 1' and the cover 2'.

(Problems to be Solved by the Invention) In the above-mentioned conventional clamp fittings, the parts of the body and cover at the mounting position are directly compressed and tightened, so that the entire tightening force of the clamp fittings is directly transmitted to that part. As a result, an excessive force is applied to the tightened portion, the portion is greatly deformed, and the portion between the clamp fittings tends to lift up, impairing the sealing performance. This phenomenon is exacerbated in items that are easily affected by heat, such as engine parts, and deformation is particularly significant in resin molded items.

This has become a problem in air cleaners, cylinder head covers, etc. where airtightness is important.

Therefore, the object of this invention is to provide a clamping device that can reduce deformation and ensure the desired sealing effect without applying excessive force to the clamping portion.

(Means for Solving the Problem) Based on the above purpose, this invention is a clamping device for an air cleaner, etc., by providing pin holding parts facing each other at required locations on the peripheral wall of the main body and cover that need to be attached and detached. The holding part on the cover side has a sideways brim on the head to form a cross shape, and the length from the bottom surface of the sideways brim to the bottom end is from the top surface of the cover side pin holding part to the bottom surface of the body side pin holding part when combined. Attach a C-shaped latch to the head of the pin whose height corresponds to the height of the pin, passing through the pin of the clamp member rotatably attached with or without the link rod, and attaching the latch to the head of the pin. It is characterized in that the main body and the cover are tightened by bringing the tip end into pressure contact with the lower end surface of the pin fitted into the insertion hole of the body-side pin holder.

(Example) Figures 1 to 3 show an example of this invention, in which 11 and 12 are a rectangular box-shaped main body made of synthetic resin and a cover for the body. The abutting portions of the one side wall are connected to each other so as to be openable and closable by a plurality of pin connecting members 14, and on the stepped portion of the body 11, the lower side of paper of a required length is pleated in a wavy manner. Overelement e with elastic packing material 13 applied to the periphery
is placed thereon, and a cover 12 is fitted over it so as to press it down.

On the side wall opposite to the connecting portion between the body 11 and the cover 12, there are pin holding portions 15 facing each other,
A plurality of pin holding portions 16 are provided extending horizontally at required intervals, and the pin holding portion 16 formed on the cover 12 has a sideways flange 17d on the head as shown in FIG. This spit 1
7d from the lower surface to the lower end of the cover side pin holding portion 1 when the cover 12 and the body 11 are combined.
A metal pin 17a whose height matches the height from the upper surface of 6 to the lower surface of the body-side pin holding portion 15;
The above-mentioned pin of the clamp member 17 consists of a square frame-shaped link rod 17c rotatably attached to the upper end of the head, and a latch 17b having a C-shaped side surface rotatably connected to the outer end thereof. 17a is fixed in a penetrating state by bringing the horizontal brim 17b into contact with the upper surface of the holding part, and the body 11 facing this is fixed in a penetrating state.
The side pin holding part 15 is provided with a pin insertion hole 15a, and the lower peripheral edge of the holding part 15 is provided with an engagement protrusion 15b for the latch 17b.

Note that 18 is an air inlet pipe attached to the cover 12, and 19 is an outlet pipe provided on the lower side of the body 11.

Therefore, when fastening the cover 12 to the body 11, the protruding portions of the cross pins 17a attached to the respective pin holding parts 16 on the cover 12 side are inserted into the insertion holes 15a of the pin holding parts 15 on the body 11 side. While inserting the latch 17b, the flat end of the latch 17b and the curved part following it are engaged with the lower surface of the pin 17a and the lower protrusion 15b of the pin holding part 15 as shown in FIG. 1, and then the link rod 17c is If the cover 12 is rotated toward the side wall as shown in FIG. It is received by the pin 17a, and is prevented from coming off by the protrusion 15b of the pin holding part 15 on the body side.
Cover 12 is fastened to body 11.

On the other hand, by rotating the link rod 17c in the outward direction opposite to the arrow in this fastened state, the latch 17b is loosened, and its flat end portion and curved portion are removed from the lower surface of the pin 17a and the protrusion 15b. The pin 17a is attached to the pin holding part 15 on the body 11 side.
By removing the cover 12 from the body 1,
It can be opened from 1.

By the way, in the above example, the body 11 and the cover 1
Although one side of the cover 12 is connected to the cover 12 by a pin connecting member 14 so as to be openable and closable, this connecting part is also tightened by a clamp member 17.
There is no problem even if it is removable.

A and B in FIG. 4 are the above-mentioned clamp members 17.
The figure shows an example in which this is applied to an air cleaner using circular or truncated conical over-elements e', e'', and in these cases bodies 11', 11'' and covers 12', Pin holding parts 15', 15'' and 1 facing each other around the circumference of 12''
A plurality of 6′, 16″ are provided at intervals in the circumferential direction,
Similarly to the above, the pins 17a are fixed to the pin holding portions 16', 16'' on the cover 12', 12'' side in a penetrating state to attach the clamp members 17, respectively, and the protruding portion of each pin 17a is attached to the bodies 11', ″ side pin holding parts 15′, 15″ pin insertion holes 15a′, 15″
a'', and connect the flat end portion of each latch 17b and the curved portion following this to the lower surface of each pin 17a and the lower protrusion 15b' of the pin holding portion 15', 15''.
15b'', each link rod 17
c toward the peripheral walls of the covers 12', 12'' to tighten the covers 12', 12'' against the bodies 11', 11''.

In addition, in FIG. 4A, the pin holding parts 15' and 1
Although a plurality of 6' are provided extending horizontally at intervals, they may be provided continuously over the entire circumference in the form of a flange. In this case, the portion where the pin 17a is held becomes the pin holding portion.

FIG. 5 shows a clamp member 17 in which the upper end of a C-shaped latch 17b is rotatably connected to the upper end of a pin 17a without intervening a link rod 17c, and is used to fasten the body 11 and cover 12. Finally, the protruding part of the pin 17a is inserted into the insertion hole 15a of the body-side holding part 15, and the flat end of the latch 17b is pressed against the lower surface of the pin 17a while slightly expanding the latch 17b, thereby applying fastening force to the pin 17a. At the same time as holding the pin, the curved part following this is attached to the pin holding part 1 to prevent it from coming off.
This shows a modification example in which the protrusion 15b of No. 5 is engaged with the protrusion 15b.

Furthermore, in each of the above cases, the pin 17a of the clamp member 17 is divided into upper and lower parts as shown by the dotted line in FIG. Even if only the latch 17b is engaged and released, the tightening function remains the same.

(Effects of the invention) As described above, in this invention, as a clamping device for an air cleaner, etc., pin holding parts are provided facing each other at required locations on the peripheral wall of the main body and cover that need to be attached and detached, and the holding part on the cover side The head is equipped with a sideways brim to form a cross shape, and the length from the bottom surface of the sideways brim to the bottom edge matches the height from the top surface of the cover side pin holder to the bottom surface of the body side pin holder when connected. A C-shaped latch is attached to the head of the pin by penetrating the pin of the clamp member rotatably attached with or without a link rod, and the tip of the latch is attached to the body side pin. Since the main body and cover are tightened by pressing against the lower end surface of the pin fitted into the insertion hole of the holding part, the fastening force by the clamp member is not applied directly to the main body or cover, and the fastening force is carried by the pin. The main body and cover do not deform as in the conventional case, and no lifting occurs between the fastened parts, and a certain sealing effect between the two can be maintained for a long period of time.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an example in which this invention is applied to an air cleaner using square elements. Figure 2 is its plan view. FIG. 3 is a perspective view of the clamp member. FIG. 4A is a half-sectional view of an example applied to an air cleaner using circular elements. Figure B is a half-sectional view of an example applied to an air cleaner using a truncated conical element. FIG. 5 is a half-sectional view of an air cleaner to which a modified example of the clamp member is applied. FIG. 6A is a half-sectional view of a square air cleaner using a conventional clamp member. Figure B is its front view. FIG. 7 is a half-sectional view of a circular air cleaner using a conventional clamp member. In the figure, 11, 11', 11''...body, 12,
12', 12''...cover, 13...packing material, 14...coupling member, 15, 15', 15''...
Pin holding part of body, 16, 16', 16''... Pin holding part of cover, 17... Clamp member, 17
a...pin, 17b...latch, 17c...link rod, e, e', e''...excess element.

Claims (1)

[Scope of utility model registration request] Pin holding parts are provided at required locations on the peripheral walls of the main body and cover that need to be attached and removed, and the holding part on the cover side has a sideways brim on the head to form a cross shape, and the sideways brim opens from the bottom surface. Attach a C-shaped latch to the head of the pin through the link rod so that the length to the lower end matches the height from the top surface of the cover-side pin holder to the bottom surface of the body-side pin holder when connected. Alternatively, the pin of the clamp member which is rotatably attached without intervening is inserted through the pin, and the tip of the latch is pressed into contact with the lower end surface of the pin fitted into the insertion hole of the body side pin holding part to connect the main body and the cover. A clamp device characterized in that it is adapted to tighten.