JPH0425657A - Backlash eliminator for worm gear - Google Patents

Backlash eliminator for worm gear

Info

Publication number
JPH0425657A
JPH0425657A JP12629290A JP12629290A JPH0425657A JP H0425657 A JPH0425657 A JP H0425657A JP 12629290 A JP12629290 A JP 12629290A JP 12629290 A JP12629290 A JP 12629290A JP H0425657 A JPH0425657 A JP H0425657A
Authority
JP
Japan
Prior art keywords
wedge
backlash
deflection angle
wheel
bodies
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP12629290A
Other languages
Japanese (ja)
Inventor
Masanori Mochizuki
正典 望月
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AISERU KK
ISEL Co Ltd
Original Assignee
AISERU KK
ISEL Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AISERU KK, ISEL Co Ltd filed Critical AISERU KK
Priority to JP12629290A priority Critical patent/JPH0425657A/en
Publication of JPH0425657A publication Critical patent/JPH0425657A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To make any backlash preventable even in the case of long-term applications by installing a deflection angle giving means in space between a first half-body and a second half-body, which energizesthese elements in the relative rotational direction. CONSTITUTION:A deflection angle giving means consisting of a pair of wedge bodies, is interposed between a first half-body 2a and a second half-body 2b. A first wedge body 31 on one side is cylindrically contraposed in a through hole 23 installed in the half-body 2a, and a second wedge body 32 on the other in a through hole 24 installed in the half-boxy 2b, respectively. Each deflection angle giving means is installed in such a position as making each incline 35 of these wedge bodies 31, 32 come to a right angle with a circumferential line. Accordingly, according to energizing force of a head part 41 with the clamping force of a bolt 4, energizing force in the opposite access direction works on an interval between both these wedge bodies 31, 32, and according to this energizing force, turning force by the contraposition between these inclines 35, 35 works on an interval between both these half-bodies 2a and 2b. With this constitution, a specified slippage is produced in space between a tooth 21 and a tooth 22, thus backlash at a time when torque is transmitted from a worm 1 to a wheel 2 is prevented from occurring.

Description

【発明の詳細な説明】 [利用分野及び発明の概要コ 本発明は、ウオームギヤのバックラッシュ除去装置に関
するものであり、ウオームからウオームホイール(以下
、単にホイールという)への伝達トルクを大きくしても
、バックラッシュが生じないようにするものである。そ
して、このために、ホイールの歯部を二枚面構成とする
とともに、これらに相対回動付勢力を作用せ、且、逆回
動阻止状態に対偶させるようにしたものである。
[Detailed Description of the Invention] [Field of Application and Summary of the Invention] The present invention relates to a backlash removal device for a worm gear, and the present invention relates to a backlash removal device for a worm gear. , to prevent backlash from occurring. To this end, the teeth of the wheel are constructed with two surfaces, and a relative rotation biasing force is applied to these teeth, and they are opposed to each other in a reverse rotation prevention state.

[従来技術及びその課題] ウオームギヤによる高精度の伝達を実現するには、ウオ
ームとホイールとの間のかみあい部においてバックラッ
シュが生じないようにする必要がある。そこで、かかる
要求を満足させるための提案として、実開昭51−37
74号のものがり、このものでは、18図に示すように
、ウオーム(1)にかみ合うホイール(2)をこれの回
転方向に平行な一対の第1半体(2a)と第2半体(2
b)とから構成し、一方の第2半体(2b)を出力軸(
20)に固定すると共に、前記第2半体(2b)と密着
するように設けた第1半体(2a)を前記第2半体(2
b)と相対回動可能に対偶させ、前記両半体を固定用ネ
ジ(N) (N)によつて固定して、この固定状態を円
周方向に微調整できるようにしたものである。
[Prior Art and its Problems] In order to achieve highly accurate transmission using a worm gear, it is necessary to prevent backlash from occurring at the meshing portion between the worm and the wheel. Therefore, as a proposal to satisfy such requirements,
The story of No. 74 is as shown in Fig. 18, in which a wheel (2) that engages with a worm (1) is made up of a pair of first half (2a) and second half (2a) parallel to the rotation direction of the wheel (2). 2
b), and one second half (2b) is connected to the output shaft (
The first half (2a) is fixed to the second half (20) and provided in close contact with the second half (2b).
b), and the two halves are fixed by fixing screws (N) (N), so that the fixed state can be finely adjusted in the circumferential direction.

このものでは、第1半体(2a)と第2半体(2b)と
からなるホイール(2)の外周面に所定の断面形状の歯
(21) (22)がウオーム(1)のネジ溝(11)
に適合する姿勢で配設されており、一方の第1半体(2
a)の歯(21)の一方の歯面(回転方向の前方側)と
、他方の′!J2半体(2b)の歯(22)の他方の歯
面(回転方向の後方側)が共にネジ溝(11)の側面に
接触するように固定用ネジ(N) (N)による第1半
体(2a)と第2半体(2b)との固定関係を調節すれ
ば、ウオーム(1)からホイール(2)への伝動の際に
バックラッシュが生じないものとなる。
In this device, teeth (21) (22) having a predetermined cross-sectional shape are formed on the outer circumferential surface of a wheel (2) consisting of a first half (2a) and a second half (2b) in a threaded groove of a worm (1). (11)
The first half (2
One tooth surface (front side in the direction of rotation) of the tooth (21) in a) and the other '! Attach the first half with the fixing screws (N) so that the other tooth surfaces (rear side in the direction of rotation) of the teeth (22) of the J2 half (2b) are both in contact with the side surface of the thread groove (11). By adjusting the fixed relationship between the body (2a) and the second half (2b), backlash will not occur during transmission from the worm (1) to the wheel (2).

ところが、この従来のものでは、使用によってネジ溝(
11)の側面及び第1半体(2a)第2半体(2b)の
歯面が摩耗した場合には、バックラッシュが生じること
となり、バックラッシュが生じない状態での使用が長期
間確保できない。
However, with this conventional type, the thread groove (
If the side surfaces of 11) and the tooth surfaces of the first half (2a) and second half (2b) wear out, backlash will occur, and it is not possible to ensure long-term use without backlash. .

本発明は、このような、rウオーム(1)  とホイー
ル(2)とをかみ合わせ、ホイール(2)を回転面に平
行な一対の第1半体(2a)と第2半体(2b)とで構
成するとともに、前記第1半体(2a)と第2半体(2
b)との回転方向の関係位置を可変としたウオームギヤ
装置」において、長期使用によってもバックラッシュが
生じないようにすると共に大きなトルクを伝達してもバ
ックラッシュが生じないようにすることをその課題とす
る。
The present invention engages the r-worm (1) and the wheel (2), and connects the wheel (2) to a pair of first half (2a) and second half (2b) parallel to the rotating surface. The first half (2a) and the second half (2
The problem is to prevent backlash from occurring even after long-term use and to prevent backlash from occurring even when large torque is transmitted in a worm gear device whose relative position in the rotational direction is variable. shall be.

[技術的手段] 上記課題を解決するために講じた本発明の技術的手段は
r第1半体(2a)と第2半体(2b)との間に両者を
相対回動方向に付勢する偏位角度付与手段(3)を設け
、この偏位角度付与手段(3)は、第1半体(2a)の
歯(21)(21)とN2半体(2b)の歯(22)(
22)とのズレを拡大する方向に付勢する手段と、前記
ズレを縮小する方向の相対移動を阻止するセルフロック
機構とを具備するようにした」ことである。
[Technical Means] The technical means of the present invention taken to solve the above problem is to urge the first half (2a) and the second half (2b) in a relative rotation direction. A deflection angle imparting means (3) is provided, and the deflection angle imparting means (3) is provided with teeth (21) (21) of the first half (2a) and teeth (22) of the N2 half (2b). (
22), and a self-locking mechanism that prevents relative movement in the direction of reducing the deviation.

[作用] 本発明の上記技術的手段は次のように作用する。[Effect] The above technical means of the present invention operates as follows.

第1手体(2a)と第2半体(2b)との間には偏位角
度付与手段(3)が介装されており、この偏位角度付与
手段(3)には、第1・第2半体(2a) (2b) 
(D歯(21) (21)と歯(22) (22)との
ズレを拡大する方向に付勢する手段を具備するから、前
記歯(21) (22)は相互にズレる方向に常時付勢
されている。従って、ウオーム(1)のネジ溝(11)
と前記歯(21) (22)とをかみ合わせたときには
、歯(21)の一方の側面がネジ溝(11)の一方の側
面に又歯(22)の一方の側面がネジ溝(11)の他方
の側面に夫々圧接された状態にあり、両者のかみ合い部
には正逆両方向の伝動条件下においてもバックラッシュ
が生じないものとなる。
A deflection angle imparting means (3) is interposed between the first hand body (2a) and the second half body (2b), and the deflection angle imparting means (3) includes the first hand body (2a) and the second half body (2b). Second half (2a) (2b)
(Since the D tooth (21) (21) and the tooth (22) (22) are provided with a means for biasing in a direction to enlarge the misalignment, the teeth (21) (22) are always biased in the direction of mutual misalignment. Therefore, the screw groove (11) of the worm (1)
When the teeth (21) and (22) are engaged, one side of the tooth (21) is on one side of the thread groove (11), and one side of the tooth (22) is on one side of the thread groove (11). They are in pressure contact with the other side, and no backlash occurs in the meshing portions of the two even under transmission conditions in both forward and reverse directions.

さらに、かみ合い部に摩耗が生じても、第1半体(2a
)と第2半体(2b)とは歯(21) (22)相互の
ズレが拡大する方向に偏位角度付与手段(3)にょフて
付勢されているから、前記摩耗発生後の新たなかみ合い
条件下でもバックラッシュが生じないものとなる。
Furthermore, even if wear occurs in the meshing portion, the first half (2a
) and the second half (2b) are biased by the deflection angle imparting means (3) in the direction in which the mutual misalignment between the teeth (21) and (22) increases. Backlash does not occur even under interlocking conditions.

尚、上記条件下で伝動トルクが作用すると籾、相互にズ
した状態にある歯(21) (22)のズレが縮小方向
の外力が作用することとなるが、偏位角度付与手段(3
)には、前記ズレを縮小する方向の相対移動を阻止する
セルフロック機構が具備させであるから、大きな伝動ト
ルクが作用しても、歯(21)(22)相互のズレが縮
小しない。バックラッシュの生じない条件が確保される
It should be noted that when the transmission torque is applied under the above conditions, the displacement of the teeth (21) and (22) which are in a mutually displaced state causes an external force to act in the direction of reduction.
) is equipped with a self-locking mechanism that prevents relative movement in the direction of reducing the deviation, so even if a large transmission torque is applied, the deviation between the teeth (21) and (22) will not be reduced. Conditions in which backlash does not occur are ensured.

[効果〕 本発明は上記構成であるから次の特有の効果を有する。[effect〕 Since the present invention has the above configuration, it has the following unique effects.

かみ合い部に摩耗が生じても、摩耗発生後の新たなかみ
合い条件下でもバックラッシュが生じないものとなるか
ら、バックラッシュの生じないかみ合い伝動が長期に亙
って確保される。
Even if wear occurs in the meshing portion, no backlash will occur even under new meshing conditions after the wear occurs, so meshing transmission without backlash can be ensured over a long period of time.

大きな伝動トルクが作用しても、歯(21) (22)
相互のズレが縮小しないから。バックラッシュの生じな
い条件での伝動トルクが大きくできる。
Even when a large transmission torque is applied, the teeth (21) (22)
Because the mutual gap is not reduced. Transmission torque can be increased without backlash.

[実施例] 以下、本発明の実施例を′s1図から第7図に基いて説
明する。
[Example] Hereinafter, an example of the present invention will be described based on FIGS.'s1 to 7.

第1図・第2図に示す第1実施例では、第2半体(2b
)にボス(B)を具備させてこれにより出力軸(20)
とホイール(2)とを一体回動するように結合し、前記
ボス(B)に第1半体(2a)を相対回動可能に外嵌す
ると共に、この′M1N1半体a)とN2半体(2b)
との間に一対の楔体からなる偏位角度付与手段(3)を
介装している。この楔体のうち一方の第1楔体(31)
は ii半体(2a)に設けた貫通孔(23)に円筒対
偶させてあり、他方の第2楔体(32)は第2半体(2
b)に設けた貫通孔(24)に円筒対偶させである。
In the first embodiment shown in FIGS. 1 and 2, the second half (2b
) is equipped with a boss (B), and thereby the output shaft (20)
and the wheel (2) so as to rotate integrally, and the first half (2a) is externally fitted onto the boss (B) so as to be relatively rotatable, and the 'M1N1 half a) and the N2 half body (2b)
A deflection angle imparting means (3) consisting of a pair of wedge bodies is interposed between the two. One of the first wedge bodies (31)
is cylindrically coupled to the through hole (23) provided in the ii half body (2a), and the other second wedge body (32) is connected to the second half body (2a).
The cylinder is paired with the through hole (24) provided in b).

前記各楔体は、外側の端部が大径部(34)となって、
この大径部が上記のように各貫通孔に円筒対偶し、内側
の先端部を小径部(33)としてあり、その先端から前
記大径部(34)の中程にかけて胴部の一側が傾斜面(
35)と成っている。そして、前記小径部(33)の先
端側の一部が他方の半体の貫通孔に突出するように、各
楔体の長さが設定されており前記傾斜面(35) (3
5)相互が対接するように貫通孔(23) (24)内
に収容されている。
Each of the wedge bodies has a large diameter portion (34) at its outer end,
As described above, this large diameter part is cylindrically paired with each through hole, and the inner tip is a small diameter part (33), and one side of the body is sloped from the tip to the middle of the large diameter part (34). surface(
35). The length of each wedge body is set such that a part of the tip side of the small diameter portion (33) protrudes into the through hole of the other half, and the inclined surface (35) (3
5) They are accommodated in the through holes (23) and (24) so that they face each other.

、一方の′i41楔体(31)にはボルト挿通用の透孔
(36)が形成されており、他方の第2楔体(32)に
はネジ孔(37)が形成されている。これら第1・第2
楔体(31) (32)間にはボルト(4)がネジ込ま
れており、このボルト(4)の頭部(41)が第1半体
(2a)側に位置してこの頭部(41)と341半体(
2a)との間に第1・N2楔体(31) (32)を相
互に接近方向に付勢するバネ(42)が介装されている
One 'i41 wedge body (31) is formed with a through hole (36) for bolt insertion, and the other second wedge body (32) is formed with a screw hole (37). These first and second
A bolt (4) is screwed between the wedge bodies (31) and (32), and the head (41) of this bolt (4) is located on the first half body (2a) side. 41) and 341 half body (
A spring (42) is interposed between the first and N2 wedge bodies (31) and (32) to urge them toward each other.

この実施例では、上記構成の四つの偏位角度付与手段(
3) (3)が、第1図に示すように、所定の円周上に
おいて一定のピッチで配設され、第1・第2楔体(31
) (32)の傾斜面(35)が前記円周線に対して直
角となる姿勢に各偏位角度付与手段(3)が取付けられ
ている。従って、ボルト(4)の締付は力に伴う頭部(
41)の付勢力に応じて、第1・第2楔体(31) (
32)間には対向接近方向の付勢力が作用することとな
り、この付勢力に応じて傾斜面(35)(35)の対偶
による回動力が第1・第2半体(2a)(2b)間に作
用することとなる。
In this embodiment, four deflection angle imparting means (
3) (3) are arranged at a constant pitch on a predetermined circumference, as shown in Fig.
) Each deflection angle imparting means (3) is attached in such a position that the inclined surface (35) of (32) is perpendicular to the circumferential line. Therefore, when tightening the bolt (4), the head (
41), the first and second wedge bodies (31) (
32) A biasing force in the opposing approach direction will act between them, and according to this biasing force, the rotational force due to the pair of inclined surfaces (35) (35) will be applied to the first and second halves (2a) (2b). It will act in between.

これにより、第1図に示すように歯(21)と歯(22
)との間に一定のズレが生じることとなりウオーム(1
)からホイール(2)にトルクが伝動されるときのバッ
クラッシュが防止される。尚、この伝動の際に、歯(2
1) (22)のズレを縮小する方向の作用力が341
楔体(31)と第2楔体(32)に作用することとなる
が、この第1楔体(31)と第2楔体(32)とはホイ
ール(2)の回転面に対してごく僅かに傾斜するだけの
傾斜面(35) (35)相互の対接によって対偶する
ものであるから、前記作用力が大きくなっても、第1・
第2楔体(31) (32)がこれらの軸線方向に離反
されることがなく、所謂セルフロック作用が得られるも
のとなる。
As a result, the tooth (21) and the tooth (22) as shown in FIG.
) and the worm (1
) Backlash is prevented when torque is transmitted from the wheel (2) to the wheel (2). In addition, during this transmission, the tooth (2
1) The acting force in the direction of reducing the deviation in (22) is 341
It acts on the wedge body (31) and the second wedge body (32), but the first wedge body (31) and the second wedge body (32) are very close to the rotating surface of the wheel (2). Slanted surfaces (35) that are only slightly inclined (35) Because they are opposed by mutual contact, even if the acting force becomes large, the first
The second wedge bodies (31) and (32) are not separated in the axial direction, so that a so-called self-locking effect can be obtained.

従って、この実施例では、一対の前記傾斜面(35) 
(35)相互の対偶によって既述のセルフロック機構が
実現されたものとなる。
Therefore, in this embodiment, the pair of inclined surfaces (35)
(35) The above-mentioned self-locking mechanism is realized by mutual pairing.

第3図〜第5図に示す第2実施例のものは、上記第1実
施例の楔体に相当する四つの部材を一体に構成し、ボス
(B)の外周面に複数の凸条(25)(25)を当間隔
で設け、この(25)と一定の間隔を置いてホイール(
2)の円周方向において対向するカム突起(28) (
28)を第1半体(2a)の内周部に配列し、第5図の
ように、環状体(K)に具備させた四つの楔体(30)
 (30)のそれぞれを前記凸条(25)と突起(26
)間に圧入した構成である。
The second embodiment shown in FIGS. 3 to 5 has four members corresponding to the wedge bodies of the first embodiment integrally constructed, and a plurality of protrusions ( 25) (25) is provided at a constant interval, and a wheel (25) is installed at a constant interval from this (25).
Cam protrusions (28) facing each other in the circumferential direction of 2) (
28) are arranged on the inner circumference of the first half (2a), and as shown in FIG. 5, four wedge bodies (30) are provided on the annular body (K).
(30) respectively.
) is press-fitted between the two.

この実施例では前記楔体(30)に傾斜面(35)を形
成すると共に、突起(26)にも傾斜面(35)を形成
してあり、この傾斜面(35) (35)相互が上記′
!J1実施例の場合と同様の条件で対接している。そし
て、第2半体(2b)における各楔体(3o)には透孔
(38)が形成されると共に、これと対向する位置には
透孔(36)が形成されており、両方の透孔間にはボル
ト(4)が挿通し、これとナツト(M)によって環状体
(に)が第2半体(2b)側に締付けられている。又、
ボルト(4)の頭部(41)と第2半体(2b)との間
には第4図のようにバネ(42)が介装されている。こ
れらにより、環状体(に)の各楔体(30)が凸条(2
5)と突起(26)との間に圧入され、傾斜面(35)
 (35)相互の対接によって第1半体(2a)と第2
半体(2b)との間には相対回動方向の付勢力が作用す
ることとなる。
In this embodiment, an inclined surface (35) is formed on the wedge body (30), and an inclined surface (35) is also formed on the protrusion (26), and the inclined surfaces (35) (35) are mutually connected to each other. ′
! They face each other under the same conditions as in the J1 embodiment. A through hole (38) is formed in each wedge body (3o) in the second half (2b), and a through hole (36) is formed at a position facing the wedge body (38). A bolt (4) is inserted between the holes, and the annular body (2) is tightened to the second half body (2b) side by this bolt (4) and a nut (M). or,
As shown in FIG. 4, a spring (42) is interposed between the head (41) of the bolt (4) and the second half (2b). With these, each wedge body (30) of the annular body (ni) has a convex strip (2
5) and the protrusion (26), and the inclined surface (35)
(35) The first half (2a) and the second half by mutual contact
A biasing force in the direction of relative rotation acts between the half body (2b) and the half body (2b).

この実施例の場合にも、上記1$1実施例の場1と同様
にバックラッシュが防止されるとともに、傾斜面(35
) (35)相互の接触面の角度がホイーノ(2)およ
び環状体(K)の軸線に対してごく僅かζ傾斜するだけ
であるから、この傾斜面(35) (35)σ対偶によ
り既述のセルフロック機構が確保されイこととなる。
In the case of this embodiment as well, backlash is prevented as in Case 1 of the above-mentioned 1$1 embodiment, and the inclined surface (35
) (35) Since the angle of the mutual contact surfaces is only slightly inclined ζ with respect to the axis of Hoino (2) and the annular body (K), this inclined surface (35) (35) The self-locking mechanism will be ensured.

3@6図・第7図に示す第3実施例は、第2半口(2b
)に具備させたボルト(S) と、これに外嵌すZコイ
ルバネ(C)によって偏位角度付与手段(3)奄構成す
るようにしたものであり、ボス(B)に口重可能に外嵌
する第1半体(2a)に矩形の開口部(39を形成し、
この開口部(39)内に第2半体(2b)の−面に具備
させた突起(29)を突出させ、この突起(29)に前
記ボルト(S)を螺合するとともに、この螺合方向をホ
イール(2)の外周と同心の円弧に刻する接線の方向に
設定し、前記ボルト(s)の先端を開口部(39)の−
側に対接させたものである。そして、前記ボルト(S)
の頭部(T) と前記突起(29)との間にコイルバネ
(C)を外嵌状態に介装し、このコイルバネ(C)を予
めこのコイルの巻き締め方向に巻き締めた状態でその両
端の係止端部を頭部(T)  と突起(29)に係止さ
せている。従って、第1図及び第2図に示すように、ボ
ルト(S)を突起(29)にセットした状態においては
前記コイルバネ(C)によってボルト(S)には常時締
め込み方向の回動付勢力が作用する。つまり、ボルト(
S)は常時突出方向に付勢されている。これにより、第
1・第2半体(2a) (2b)間には相対回動力付勢
力が付与される。また、突起(29)とボルト(S) 
とはネジ対偶していることから、ボルト(S)を後退さ
せる方向の作用力がこのボルトに直接作用しても、この
ボルト(S)と突起(29)とのネジ対偶部がセルフロ
ック作用を発揮するから、上記各実施例と同様に大トル
クが伝達可能となる。
3@The third embodiment shown in Fig. 6 and Fig. 7 has a second half opening (2b
) and a Z coil spring (C) fitted onto the bolt (S) and a Z coil spring (C) fitted onto the bolt (S) to form a deflection angle imparting means (3). A rectangular opening (39) is formed in the first half (2a) to be fitted,
A protrusion (29) provided on the negative side of the second half (2b) is projected into this opening (39), and the bolt (S) is screwed into this protrusion (29). Set the direction in the direction of a tangent to an arc concentric with the outer periphery of the wheel (2), and insert the tip of the bolt (s) into the - of the opening (39).
The two sides are facing each other. And the bolt (S)
A coil spring (C) is externally inserted between the head (T) of the head (T) and the protrusion (29), and the coil spring (C) is pre-wound in the winding direction of the coil, and its both ends are The locking end of the head (T) and the protrusion (29) are locked. Therefore, as shown in FIGS. 1 and 2, when the bolt (S) is set on the protrusion (29), the coil spring (C) always exerts a rotational urging force on the bolt (S) in the tightening direction. acts. In other words, the bolt (
S) is always biased in the protruding direction. As a result, a relative rotation force is applied between the first and second halves (2a) and (2b). Also, the protrusion (29) and bolt (S)
Since the bolt (S) and the protrusion (29) are threaded together, even if a force acting in the direction of retracting the bolt (S) acts directly on this bolt, the threaded threaded joint between the bolt (S) and the protrusion (29) will not self-lock. Therefore, large torque can be transmitted as in each of the above embodiments.

【図面の簡単な説明】[Brief explanation of the drawing]

′!J1図は本発明の第1実施例の説明図、342図は
そのX−X断面図、第3図は第2実施゛例のホイールm
 (2)の分解図、第4図は組立状態のホイール(2)
の要部断面図、第5図はそのY−Y断面展開図、第6図
・第7図は第3実施例の説明図、第8図は従来例の説明
図であり、図中。 1)・・・ウオーム 2a)・・・第1半体 2b)・・・342半体 2)・・・ホイール 3)・・・偏位角度付与手段 21) (22)・・・歯
′! Figure J1 is an explanatory diagram of the first embodiment of the present invention, Figure 342 is a sectional view taken along line X-X, and Figure 3 is a wheel m of the second embodiment.
Exploded view of (2), Figure 4 shows wheel (2) in assembled state
5 is a developed view of the Y-Y cross section, FIGS. 6 and 7 are explanatory views of the third embodiment, and FIG. 8 is an explanatory view of the conventional example. 1) Worm 2a) First half 2b) 342 Half 2) Wheel 3) Deflection angle imparting means 21) (22) Teeth

Claims (1)

【特許請求の範囲】[Claims] ウォーム(1)とホィール(2)とをかみ合わせ、ホィ
ール(2)を回転面に平行な一対の第1半体(2a)と
第2半体(2b)とで構成するとともに、前記第1半体
(2a)と第2半体(2b)との回転方向の関係位置を
可変としたウォームギヤ装置において、第1半体(2a
)と第2半体(2b)との間に両者を相対回動方向に付
勢する偏位角度付与手段(3)を設け、この偏位角度付
与手段(3)は、第1半体(2a)の歯(21)(21
)と第2半体(2b)の歯(22)(22)とのズレを
拡大する方向に付勢する手段と、前記ズレを縮小する方
向の相対移動を阻止するセルフロック機構とを具備する
ようにしたウォームギヤのバックラッシュ除去装置。
A worm (1) and a wheel (2) are engaged with each other, and the wheel (2) is composed of a pair of first half bodies (2a) and a second half body (2b) parallel to the rotating surface, and the first half body In the worm gear device in which the relative position in the rotational direction between the body (2a) and the second half body (2b) is variable, the first half body (2a)
) and the second half (2b) are provided with a deflection angle imparting means (3) for biasing both in the relative rotational direction, and this deflection angle imparting means (3) is provided between the first half (2b) 2a) Teeth (21) (21
) and the teeth (22) of the second half (2b) (22), and a self-locking mechanism that prevents relative movement in the direction of reducing the deviation. This is a worm gear backlash removal device.
JP12629290A 1990-05-15 1990-05-15 Backlash eliminator for worm gear Pending JPH0425657A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12629290A JPH0425657A (en) 1990-05-15 1990-05-15 Backlash eliminator for worm gear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12629290A JPH0425657A (en) 1990-05-15 1990-05-15 Backlash eliminator for worm gear

Publications (1)

Publication Number Publication Date
JPH0425657A true JPH0425657A (en) 1992-01-29

Family

ID=14931599

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12629290A Pending JPH0425657A (en) 1990-05-15 1990-05-15 Backlash eliminator for worm gear

Country Status (1)

Country Link
JP (1) JPH0425657A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5387162A (en) * 1993-05-27 1995-02-07 Yang; Tai-Her Planetary worm type gear and application device
JP2007089789A (en) * 2005-09-28 2007-04-12 Kai R & D Center Co Ltd Scissors
KR100795003B1 (en) * 2006-01-27 2008-01-15 주식회사 만도 Steering Apparatus
CN102032320A (en) * 2010-11-04 2011-04-27 吴声震 Zero-return difference worm gear speed reducer for industrial robot
JP2019190564A (en) * 2018-04-24 2019-10-31 株式会社デンソー Worm wheel, manufacturing method of worm wheel, and motor device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5387162A (en) * 1993-05-27 1995-02-07 Yang; Tai-Her Planetary worm type gear and application device
JP2007089789A (en) * 2005-09-28 2007-04-12 Kai R & D Center Co Ltd Scissors
KR100795003B1 (en) * 2006-01-27 2008-01-15 주식회사 만도 Steering Apparatus
CN102032320A (en) * 2010-11-04 2011-04-27 吴声震 Zero-return difference worm gear speed reducer for industrial robot
JP2019190564A (en) * 2018-04-24 2019-10-31 株式会社デンソー Worm wheel, manufacturing method of worm wheel, and motor device

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