JPH0510759U - Adjusting device for new governor - Google Patents

Abstract

(57) [Summary] [Purpose] To enable the tension adjusting handle of the pneumatic governor adjusting device to be operated without removing the detent device. [Structure] The rotation adjusting screw 9 ₁ of the tension adjusting handle 7 is attached to the governor body 1 in a direction orthogonal to the rotation axis direction of the handle 7.
It is screwed into 0 and its tip is brought into pressure contact with the outer peripheral surface of the handle 7.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention is an adjusting device for a pneumatic governor used for speed control of an internal combustion engine. It is about the table.

[0002]

[Prior art]

  For example, the pneumatic governor shown in FIG. 6 is known. This The human governor 1 includes a carburetor 2 and an intake manifold (not shown). Is arranged in the intake passage between the cam spring 4 and the opening of the governor valve 3. Due to the tension of. "Valve opening force" and "pressure difference between the upper and lower surfaces of governor valve 3" "Valve closing force" and the pressure difference between the atmospheric pressure and the governor valve 3 top surface. It depends on the balance with the "valve closing force" of the stabilizer piston 5. It is configured as   Then, the adjusting device of the pneumatic governor 1 is provided with the end of the cam spring 4. Spring constant adjusting screw 6 which also functions as a tension adjusting slider screwed into the It is configured by including a tension adjusting handle 7 and the like screwed to the liu 6 and By the operation, the spring constant adjusting screw 6 moves forward or backward to move the cam spring 4 The tension of the cam spring 4 by operating the screw 6 To increase or decrease the screwing depth to increase or decrease the spring constant of the cam spring 4. Is.

In the adjusting device shown in FIGS. 3 and 4 as one of the conventional examples, a spring constant adjusting screw 6 also serving as a tension adjusting slider is screwed into an end portion of a cam spring 4 and is attached to an end portion of a spring constant adjusting handle 8. The formed cut-and-raised protrusion 8 ₁ is inserted into and engaged with the long groove 6 ₁ formed in the spring constant adjusting screw 6, and the screw portion 7 ₁ of the tension adjusting handle 7 is formed into a screw because it is formed in the central portion of the screw 6. The handles 7 and 8 are screwed together and fixed to the governor body 10 by the lock bolts 9 for preventing them from rotating, and the air inflow prevention cap 11 is detachably fitted to the handle 7 and 8 installation portion. It was done. Meanwhile, as shown in FIG. 5, a spring constant adjusting screw 6 forming the engaging groove 6 _second driver to the head and threaded into the end of the cam spring 4, screwing the tension adjustment handle 7 on the screw 6 Then, the handle 7 is fixed to the governor body 10 via the lock bolt 9, and a cap (not shown) is detachably attached to the disposing portion of the screw 6 and the handle 7. Is rotated by a driver to adjust the spring constant of the cam spring 4.

[0004]

[Problems to be solved by the device]

However, in the adjusting device shown in FIGS. 3 and 4, when the tension adjusting handle 7 or the spring constant adjusting screw 6 is operated, the lock bolt 9 must be removed beforehand, which is troublesome. Since the lock bolt 9 is easily lost and the head of the lock bolt 9 projects from the tension adjusting handle 7, there is a disadvantage that the depth of the cap 11 becomes large. Further, as shown in figure 5, since the head of the spring constant adjustment screw 6 projects from the tension adjusting handle 7, as well as easily disengaged driver from the engaging groove 6 ₂ when operating in the driver, the adjustment required There is a problem in that the problem of touching the head by mistake and adversely affecting the output of the engine may occur at times, and the depth of the cap becomes large.

[0005]   According to the present invention, the rotation adjusting device of the tension adjusting handle is provided in the rotation axis direction of the handle. And the adjustment screw shown in FIGS. Problems related to removal of the lock bolt 9 in the leveling device, and FIGS. 5 solved the problem concerning the cap 11 in the adjusting device shown in FIG. Adjust the head of the adjusting screw within the range of the thread of the tension adjusting handle ( Claim 3), which eliminates the above-mentioned inconvenience at the time of driver operation associated with that shown in FIG. Is.

[0006]

[Means for Solving the Problems]   The present invention relates to a spring constant adjusting screw screwed into an end of a cam spring, A tension adjusting handle screwed into the spring constant adjusting screw, and the tension adjusting handle A pneumatic governor equipped with a detent device and a cap for these mounting parts. In the adjustment device of the turner, It is composed of anti-rotation screws in a direction orthogonal to the rotation axis direction.

[0007]

[Action]

  The tension adjusting handle can be freely rotated by loosening the anti-rotation screw. In this case, times It is not necessary to remove the locking screw from the governor body. In addition, the cover cap and The screw and the screwing hole of the screw are sealed with a seal (claim 2). It is possible to seal and seal the screw hole in a waterproof manner.   According to the third aspect of the present invention, the driver is operated by inserting it into the thread portion of the tension adjusting handle. Therefore, the rotation of the spring constant adjusting screw can be rotated quickly and accurately, and There is no need to worry about accidentally touching the screw head when adjustment is not required.   In the invention of claim 4, the tension adjusting handle is screwed into the spring constant adjusting screw. At this time, since the counterbore acts as a guide portion when the screw is inserted, the handle The screw and the screw can be screwed together quickly and accurately.

[0008]

【Example】

  An embodiment of the present invention will be described with reference to FIGS. ₂ The end of the spring constant adjusting screw 6 formed with the screw is screwed into the end of the cam spring 4. However, the tension adjustment handle 7 has a threaded portion 7₁And the threaded portion 7₁of Counter bore 7 on the inner side edge₂Of the spring constant adjusting handle 7 Clew 6 to counterbore 7₂The flange of the adjusting handle 7 is screwed in from the side 7₃Is brought into contact with the governor body 10 and the head of the screw 6 is moved to the handle. Screw part 7₁Place it inside.   And the non-rotating screw 9₁To the governor body 10 and turn the adjustment handle 7 The handle is screwed in the direction orthogonal to the rolling axis to be in an embedded state, and the tip end thereof is adjusted to the adjustment handle 7 It prevents the adjustment handle 7 from turning around by pressing it against the outer peripheral surface of the The cap 11 is detachably fitted to the governor body 10 and the adjustment handle 7 is covered. At the same time, the seal 12 is attached to the cap 11 and the screw 9 is attached.₁Screw holes and And the cap 11 are sealed together.   When adjusting the tension of the cam spring 4, the seal 12 is peeled off and the key is pressed. Remove cap 11 and screw 9₁Loosen and rotate the adjustment handle 7, When adjusting the spring constant of No. 4, the screwdriver is used to engage the spring constant adjusting screw 6. Ditch 6₂The screw 6 is rotated by engaging with the screw.

[0009]

[Effect of device]

  The pneumatic governor adjusting device of the present invention adjusts the tension of the cam spring. Adjust the tension adjustment handle to adjust the rotation prevention device at right angles to the handle rotation axis. Since it is configured with a direction stop screw, tension adjustment It is possible to operate the screw and the spring constant adjusting screw, and There is no need to worry about losing it, and the depth of the cap is made smaller than in the conventional example of FIG. There is an effect that can be.   According to the invention of claim 2, it is possible to seal the screw and waterproof the screwing hole portion. It In addition, by sealing the cap, it will not allow the governor to be adjusted unnecessarily. It is the one.   According to the invention of claim 3, there is no engagement / disengagement due to slipping of the driver, and the spring constant adjustment spring The operation of the clew is easy, and the depth of the cap is smaller than that of the conventional example in Fig. 5. You can do it.   According to the fourth aspect of the invention, the screw of the tension adjusting handle is screwed on the spring constant adjusting screw. This has the effect of facilitating entry work.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of an embodiment of the present invention.

FIG. 2 is a perspective view showing an assembling procedure of the embodiment shown in FIG.

FIG. 3 is a cross-sectional view of a main part of a conventional example.

FIG. 4 is a perspective view showing an assembling procedure of the conventional example of FIG.

FIG. 5 is a sectional view of a main part of another conventional example.

FIG. 6 is a schematic explanatory diagram of a pneumatic governor device.

[Explanation of symbols]

1 Pneumatic governor 2 Vaporizer 3 Governor valve 4 Cam spring 5 Stabilizer piston 6 Spring constant adjusting screw 6 ₁ Long groove 6 ₂ Engaging groove 7 Tension adjusting handle 7 ₁ Screw part 7 ₂ Counter bore 7 ₃ Flange part 8 Spring constant adjusting handle 8 ₁ Protrusion 9 Lock bolt 9 ₁ Screw 10 Governor body 11 Cap

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Nobumi Sasakawa             1-7 Denenchofu Minami, Ota-ku, Tokyo             Inside Kosida Tech

Claims (4)

[Scope of utility model registration request] 1. A spring constant adjusting screw screwed into an end portion of a cam spring, a tension adjusting handle screwed to the spring constant adjusting screw, a rotation stopping device for the tension adjusting handle, and a cover for these mounting portions. A pneumatic governor adjusting device comprising a cap, wherein the tension adjusting handle rotation preventing device is constituted by a rotation preventing screw extending in a direction orthogonal to a rotation axis direction of the handle. 2. The pneumatic governor adjusting device according to claim 1, wherein the cover cap and the screwing hole portion of the non-rotating screw are sealed with a seal. 3. The pneumatic governor adjusting device according to claim 1, wherein the head of the spring constant adjusting screw is adjusted within the range of the screw portion of the tension adjusting handle. 4. The pneumatic governor adjusting device according to claim 1, wherein a counterbore is formed on the inner end side of the thread portion of the tension adjusting handle.