JPS59219572A - Backlash removing device - Google Patents

Abstract

PURPOSE:To enable simple and reliable removal of backlash, by a method wherein an auxiliary gear, having a slit formed between a pair of gears engaging with each other, is installed to bend the tooth of the zuxiliary gear in the direction of radius during gearing of the auxiliary gear with the one gear. CONSTITUTION:An auxiliary gear 5 is formed in a thin sheet, and teeth 5a are formed in a tooth thickness (a) which is slightly thicker than the width of a tooth groove of a gear 1 in a pitch circle. In the auxiliary gear 5, for example, 4 circular grooves 12 in the same shape, serving as a slit, are formed at equal intervals on the same radius, and 4 circular grooves 13 in the same shape are formed in a manner that opposite end parts thereof are superposed with their respective end parts of each of circular grooves 12. The auxiliary gear 5 engages with the side of a gear by means of screw 14 through utilization of the circular grooves 12. This causes the auxiliary gear 5 to be bent by a distance (d) in a manner that the auxiliary gear is forcibly pressed by a gear 11 to reduce the width of the circular groove 13, and causes tooth 5a to make firm contact with a pair of teeth of the gear 11 through the repulsion force produced due to such bending.

Description

[Detailed description of the invention] Inventions 1 and 11, a pair of 1IJ1SYI
Equipment for removing 100% buff (this Iv')
l 4ro.

Generally, gears are formed so that the tooth thickness is smaller than the width of the tooth groove in order to prevent friction on the south side, and backlash (back gap) is formed between the teeth of the two gears. I'm doing it. However, this backlash occurs when gears mesh (
It is desirable to eliminate the causes of noise as much as possible.

For this reason, a backlash removing device as shown in FIGS. 1 to 4 has conventionally been provided in the tooth space 1. First, in FIGS. 1 and 2, the boss 2 suddenly appears on the gear 1.
The boss 2 has an annular groove 3 on one side on the outer circumferential side.
is formed. Note that one small diameter hole 4 is bored in the annular groove 3 in the axial direction.

The boss 2 of the gear 1 is fitted with an auxiliary gear 5 having teeth 5a having a tooth thickness equal to or slightly less than that of the thread 1. A small diameter hole 6 is bored in a portion having the same diameter of 1' as the annular groove 3 of No. 1.

In order to attach the auxiliary gear 5 to the gear 1, the coil spring 7 extending into the annular groove 3 of the gear 1 is fixed,
One end of the spring 7; 8 is connected to the small diameter hole 4 of the annular groove 3.
At the same time, the other end 9 of the coil spring 7 is fitted into the small diameter hole 6 of the auxiliary gear 5. Then, auxiliary f1
The wheel 5 is biased in the direction of rotation of the auxiliary gear 5 as shown in FIG. In the figure, J, U1ko, (L!) engages Yamanaka 11.

In this way, the action of the spring 7 (:J: tooth width 1) is shown in Figure 4.
Teeth 1a and auxiliary - (width 6 reason a is house 1 of Yamanaka 11)
J-2 is T, which removes Ba-Nkura-Nshi by 1σ within the width of vl.

However, it is long 1), this J et al.
In the brush removal device, when removing the tooth width, it is attached to the coil spring 7 as shown in Fig. 3 (71). I
(1-Year 1 and the auxiliary gear 5 are held, and the other tooth width 11 is aligned with the tooth width 11! / jI'::,,, j
7, so both teeth I''111.5 in the state shown in Figure 3.
! i′1″r? Iro 11 cooperation is necessary and crop millet 41 is: 1
F was always bad.

The present invention solves the problems of 1f-5L-J in the conventional technology? )? However, Icj tt, L/Kobaba-Lanshi 4, What 1゛It is actually possible to remove backlash, and the purpose is to make the device 11t thick.
Width J of the tooth groove of the -41 gear that meshes with: Slightly thick tooth J'
f f's +':, Narrow tooth @ Ii! iλ15 - The auxiliary tooth width is meshed with the other gear II and solidified into one position 1, and a slit is formed in the auxiliary gear to increase the auxiliary tooth width when the auxiliary gear meshes with the other float. It is characterized by the fact that the ridges are bent in the radial direction.

Hereinafter, the present invention will be described with reference to an embodiment shown in FIGS. 5 to 7.
I will clarify. In addition, in FIGS. 5 to 7, parts that are common to those shown in FIGS. 1 to 4 described above are marked with the same Yozuki +11. It is.

In FIGS. 5 and 6, the teeth 5a of the auxiliary gear 5, which are made of plywood, have a tooth thickness a that is slightly thicker than the width of the tooth groove of the gear 5.11 in the pitch circle. Also, supplement 1'! ! + On the gear 5, four identical circles ''In the radially outward auxiliary tooth width 5, G, II, the same four circular arc grooves 13 overlap the ends of the circular arc grooves 12, respectively, with both ends of each circular groove 13 in the circumferential direction. : Formed like a sea urchin. The auxiliary float 5 is fitted onto the side surface of the mountain float 5 by screws 14 using each of the inner circular arc grooves 12. At this time, the rear tooth groove of each tooth 5a of the auxiliary gear 5 in the rotational direction matches the tooth surface of each tooth 1a of the gear 1 of rotation = 3 in one direction 1η pl.

Gatte, auxiliary t1'1 middle tj a) F'r mountain 5 a
L; J, forward direction of rotation with respect to Yamanaka 18 (, - protrusion 4
There are a lot of things.

As mentioned above, 1':) Cultivation 1 ko cL r + po, ri) Figure 7 shows 61 for wood, sea urchin, float 11 - 2 Yamachu 14 chants together, and the tooth thickness of tooth 5a of 5th auxiliary tooth is 2i11 of Yamanaka 11. Since the width J of both grooves is increased, the auxiliary gear 5 is pressed by the gear 11 and the auxiliary gear 5 is 171+: groove 12: t l:: is 13
, In the present example ('', 10 and T treducing the width of the shoulder 13 J: sea urchin 1 method d r month? +: MUJ and ni lI
-Ro. 1) But -), the tooth 5 of the auxiliary gear 5. 'l l:
I: liin I reaction force 1;-, , I, 1') gear 11
A pair of reasons 11a 1. ．． 7-density 1f2 shi, batsunonoratsushi are removed. In order to enable quiet operation with less noise, the floats are rotated in the opposite direction (:t)
It is possible to transmit rotational motion accurately without flaws.

As explained in the following, 41': If the invagination device of the present invention is J:, the lfI of the gears of χ・1 are mutually guarded.
1. Equipped with IK groove 1 because the tooth thickness is slightly thicker than the width of the groove. : auxiliary gear [t1 tooth width is meshed with the other gear and fixed to one tooth width, and the auxiliary gear is formed with slots 1 to 71j.
And front-4 = The other part of the auxiliary float is bent in the radial direction, so it has the advantage of being easy to assemble.

[Brief explanation of drawings]

Figure 1 is a spot view showing a conventional deburring removal device;
Fig. 2 is a front view of Fig. 1, Fig. 3 is a perspective view of Fig. 2, Fig. 4 is a front view showing the meshing state of the gears, and Fig. 5 is a part of the pack removal device according to the present invention. A vertical cross-sectional view showing an example,
FIG. 6 is a front view of FIG. 5, and FIG. 7 is a front view showing the meshing state of the gears. 1.11...Gear, 5...Auxiliary gear, 7...
Coil spring, 12.13...Circular groove. Patent Applicant: Nissan N Automotive Co., Ltd. No. 3-4 Figure 549- σ

Claims (1)

[Claims] Width a, n' of the +J vortices of the pair of gears that jet each other? '
+-■-Complement 1llIIF with teeth of average tooth thickness
Align the tooth width of the auxiliary gear with the tooth width of the other gear, and form a slot 1I in the auxiliary tooth so that when the auxiliary gear and the other gear mesh, the teeth of the auxiliary gear become 1711. Backlash removal equipment characterized by the fact that it is flexed by Jζ.