JPS628641Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in a fastening device suitable for use in an air cleaner case in a power generator, a stationary engine, etc.

In motor generators, stationary engines, etc., air cleaner cases are housed within a limited space in order to make them more compact.

In order to replace the elements within the air cleaner case, a cover is detachably attached to the case using fasteners.

The fastening device has an engagement arm formed of a wire rod with an engagement part formed at the tip and a pin integrally installed horizontally at the base, an operating part formed at the tip, a pressing part formed at the base, and and an operating arm made of a wire rod pivotally supported by the pin of the engaging arm.

Two such fasteners are prepared to hold the air cleaner case and cover together at the top and bottom, respectively. That is, the engaging portion of the engaging arm is engaged with the case, the operating arm is rotated around the pin, and the pressing portion of the operating arm is pressed against the cover with a lever action to maintain the locked state. There is.

However, in reality, the space around the air cleaner case is small, so although it is relatively easy to fasten the fastening device from above by visual confirmation, it takes some effort to fasten the fastening device from below. In order to engage the engaging part with the locking piece or groove of the air cleaner case, you must pick up the pin with your fingertips and grope to first engage and suspend the locking tool from the bottom of the air cleaner case. The operating arm may rotate around the pin and tilt between the engagement arm and the air cleaner case.

As mentioned above, there is a narrow space below the air cleaner case, so it is difficult to push the operating arm and rotate it in the opposite direction. I had to remove it and try again.

Furthermore, after the fastening tool is engaged and suspended from the air cleaner case, the base of the engagement arm is moved upward by pinching the pin, and the pressing part of the base of the operating arm pivoted to the pin is pressed against the locking protrusion or groove of the cover. In other words, before the operating portion of the operating arm is pulled up and rotated in the locking direction, the pin must be grasped and moved upward.

The present invention was developed in view of the problems with the conventional fastening devices, and its purpose is to move the operating arm in the fastening operation direction with respect to the engaging arm that constitutes the fastening device made of wire. Rotation is restricted so that it does not rotate significantly in the opposite direction, and the operating arm is prevented from entering between the air cleaner case, which is one of the members to be combined, and the engagement arm that is engaged and suspended from the air cleaner case, and thereby When attaching a cover to the air cleaner case of a motor generator, stationary engine, etc., it is especially suitable for securing the cover in the lower part, so the desired attachment can be achieved by simply operating the operating part of the operating arm. To provide a fastening device.

In order to achieve such an object, the present invention provides that a stopper is formed integrally and horizontally on the engaging arm to engage with the pressing portion of the operating arm and restrict the rotation of the operating arm. This is the summary.

A preferred embodiment of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a side view of the air cleaner portion, FIGS. 2 and 3 are front and side views of the fastening device according to the present invention, and FIG. 4 is a side view showing the operating state.

First, the configuration of the engine generator will be explained with reference to FIG. 5. The engine 2 is located on the right side of the figure in the rectangular frame 1, the recoil starter 3 is on the right side of the engine 2, and the muffler is located in front of the left side. 4, muffler 4
A generator main body 5 is provided at the back of the engine, and a fuel tank 6 is provided above the engine and the generator main body.
The engine 2 employs a horizontal engine in which the cylinder 21 is oriented horizontally, and a carburetor 7 is provided on the right side of the cylinder 21 to avoid a heat source such as a muffler.

As shown in FIG. 1, the carburetor 7 uses a side draft type with horizontal passages.
A chamber 72 formed hanging below the body 71 represents a float chamber, and communicates and connects the downstream end 73 of the body 71 to the intake section 22 of the engine 2. The upstream end 74 of the carburetor body 71, that is, the intake side end is communicatively connected to the back wall 82 of the case 81 of the air cleaner 8,
The front surface of the case 81 is covered with a cover 86 that can be opened and closed as described later, and an element (not shown) is housed in an air cleaner space surrounded by the case 81 and the cover 86, and a carburetor intake path is defined by the element. It communicates with the clean side inside the air cleaner, and only purified air is introduced.

Incidentally, the combined portion of the cover 86 covering the front surface of the case 81 of the air cleaner 8 is formed as a flange portion 87, and the cover 86 is held together with the case 81 by separate upper and lower fasteners 30, 40.

The upper fastener 30 has an engagement arm 31 and an operation arm 36 that are generally U-shaped in plan and made of a wire rod, for example, a round bar.
The intermediate portions 37, 37 of the operating arm 36 near the base are each bent one turn onto a pin (not shown in the figure) formed facing inward at the open end of the base of the engaging arm 31. It supports the play joint.
The engagement arm 31 has a larger shape than the operating arm 36.

The distal end of the engaging arm 31 constitutes an engaging section 32, the distal end of the operating arm 36 constitutes an operating section 38, and a pressing section 39 is disposed inwardly at the open end of the base of the operating arm 36. , 39 are formed.

The pressing portion 39 and the operating portion 38 are both configured to be inclined in the same direction when viewed from the side with respect to the intermediate portion of the operating arm 36, and the engaging arm 31 is configured in a side arch shape.

On the other hand, a spring plate 91 is riveted to the upper wall 83 of the air cleaner case 81, the tip of the spring plate 91 forms a curled locking groove 92, and the spring plate 91 is biased in the upright direction.

Further, a locking projection 93 is protruded from the front of the upper end of the flange portion 87 of the air cleaner cover 86, so that the lower portion of the locking projection 93 forms a locking groove.

Then, the engaging portion 32 of the engaging arm 31 of the fastening tool 30 is fitted and locked into the locking groove 92 of the spring plate 91 provided on the upper wall 83 of the case 81, and the pin engages with the upper wall 88 of the cover 86. Engagement arm 3 so that it approaches
1, then pick up the operating section 38 of the operating arm 36 with your fingers and press it toward the top wall 88 of the cover 86, so that the pressing section 39 engages the locking protrusion provided on the flange section 87 of the cover 86. 93 from below by lever action, resulting in a locked state.

Next, the details of the lower fastener 40 according to the present invention will be described. Like the upper part, this lower fastener 40
The engagement arm 41 is made of a round bar and has a generally U-shaped plan view, and an operation arm 46.
The intermediate portions 47, 47 near the base are pivotally supported. This engagement arm 41 is also larger in shape than the operating arm 46.

The tip of the engagement arm 41 connects the engagement portion 42,
The distal end of the operating arm 46 constitutes an operating section 48, and pressing sections 49, 49 are formed facing each other inside the base open end of the operating arm 46.

Further, one of the side rod portions 44, 44 of the engagement arm 41, that is, the right side rod portion 44 in FIG. 2, is bent to project inward to form a stopper 45. This stopper 45 is formed so as to sufficiently wrap around the side rod portion 50 of the operating arm 46.

The pressing portion 49 and the operating portion 48 are both inclined in the same direction when viewed from the side with respect to the intermediate portion of the operating arm 46, and the engaging arm 41 is formed in a side arch shape.

On the other hand, the lower wall 84 of the air cleaner case 81 is also provided with a spring plate 96 like the upper wall 83, and the spring plate 96, which has a curl-shaped locking groove 97 at its tip, is biased in the downward direction. .

Also, a locking protrusion 98 is formed at the front of the lower end of the flange portion 87 of the air cleaner cover 86 in the same way as at the upper end.

First, the engaging portion 42 of the engaging arm 41 of the fastener 40 is fitted and locked into the locking groove 97 of the spring plate 96 provided on the lower wall 84 of the case 81. This is shown in Figure 3.

Next, operate the operating arm 4 from the front with respect to the case 81.
6 by pressing the operating portion 48 with a finger to rotate the operating arm 46 as shown by the imaginary line in FIG. At this time, one side rod portion 50 of the operating arm 46 comes into contact with the stopper 45 provided on the operating arm 41 from below and its rotation is restricted, so that further pressure on the operating portion 48 from below causes the fourth As shown in the figure, the engagement arm 41 and the operating arm 46 integrally straddle the flange portion 87 of the cover 86. At the same time, the pressing portion 49 of the operating arm 46 comes into contact with the cover 86 from below, and the cover 86 is positioned.

Next, from the state shown in FIG. 4, put your finger on the operating part 48 from the rear and rotate the operating arm 46 as if pulling it, so that the locking protrusion 98 provided on the flange part 87 of the cover 86 is levered from above. Pressing part 4
9 is pushed into contact, resulting in a locked state.

Therefore, the fastening operation of the fastening tool 40 from below can be easily performed by simply pressing and pulling the operating portion 48 of the operating arm 46, thereby improving the so-called clipping operability.

Since the gist of the present invention is to provide the engagement arm 41 with a stopper 45 for regulating the rotation of the operating arm 46, the stopper and the fastening device themselves are not limited to the embodiments, and may have other shapes. are also included in this invention. It goes without saying that the fastener according to the present invention can be applied not only to the air cleaner case but also to other parts.

As is clear from the above description, according to the present invention, a stopper is provided that restricts the rotation of the operating arm with respect to the engaging arm constituting the fastening tool made of wire so that it does not rotate significantly in the opposite direction to the fastening operation direction. One member to be combined because it is formed into an engagement arm,
For example, the operating arm does not get stuck between the air cleaner case and the hanging engagement arm that is engaged with the air cleaner case, and moreover, the pressing part can be positioned simply by pressing the operating part of the operating arm with your finger, and the pressing part can be positioned continuously. Just by pulling the operation part with your finger, the desired combination lock is achieved, improving the clipping operability, and since the pressing part can be used to form the rotation regulating stopper part, the shape can be simplified, and the pressing part can be This part has many advantages, such as being able to withstand large rotational forces.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a side view of the air cleaner part, Fig. 2 is a front view of the fastening device according to the invention, Fig. 3 is a side view of the same, and Fig. 4 is A side view showing the operating state, FIG. 5 is a side view of the motor generator. In the drawing, 40 is a fastening device according to the present invention, 41 is an engaging arm, 42 is an engaging portion, 43 is a pin, 45 is a stopper, 46 is an operating arm, 48 is an operating portion, and 49
is a pressing part.

Claims (1)

[Scope of utility model registration request] an engaging arm made of a wire rod having an engaging portion formed at its tip and a pin horizontally disposed at its base; an engaging arm pivoted near the base to the pin of the engaging arm; and a pressing portion formed at the base; It consists of an operating arm made of a wire rod with an operating section formed at its tip, and the engaging section of the engaging arm is engaged with one of the members to be combined, and the operating arm is rotated around the pin to be combined. In a fastening tool that presses the pressing part of the operating arm against the other member to be rotated and holds the two members together, the engaging arm engages with the pressing part of the operating arm to rotate the operating arm. A fastener characterized by forming a stopper that restricts movement.