JPS5944948A - Transmitting torque limiting mechanism for motor drive device - Google Patents

Abstract

PURPOSE:To readily limit the transmitting torque to an output shaft by providing a clutch mechanism between a casing of a motor drive device and a motor which is rotatably supported. CONSTITUTION:When a switch knob 54 is pushed so that a microswitch 28 is turned ON, a motor 12 used for a geared motor 12 rotates to rotate an output shaft 18. When a load torque which is applied to the shaft 18 increases, a slide occurs between a retainer plate 64 and a facing 62, and the motor 12 itself rotates. As a result, a transmitting torque which is transmitted from the motor 12 to the shaft 18 is limited.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transmission torque limiting mechanism for an electric drive device, and in particular to a transmission torque limiting mechanism for limiting transmission torque of a constant output of 11 by allowing rotation of an electric motor housing. Concerning the restriction mechanism.

If the load 1-lux applied to the output shaft of the electric drive device exceeds a certain limit, it may be necessary to limit the transmission 1-lux of the output +l;l+. Tadoepo is used to curl hair.
+'J+ (< electric drive every other J, -:) - (return!, drive 3-[4K) case (31, spring (=J[:J end of hair, 1J house straw 〕, 1λ1 prefecture)'l Turn off the power ゛Mikomaki I-1
When I reached the edge of 11, I got a little close to the mouth before turning off the power switch from saw 11, 1 fish, and as a result, I pulled my hair and curled 1 rishi river. i'! If you wear a 7-pile hair and are unrespectable, it will cause inconveniences such as hair breakage and hair loss.

Therefore, it is necessary to suppress the transmitted torque of the electric drive device 1'r to below a certain limit.

In addition, 85 applicable parts for electric drive devices such as electric screwdrivers, electric clinders, electric nopanos, etc.
! 2. Avoiding overload on the electric drive device itself (1) In order to protect it from damage, it is necessary to limit the transmission torque of the output shaft as described above.

Therefore, a friction clamp is usually installed in the middle part of the output shaft.
When the load 1-lux reaches a certain limit or more, the pull-in clutch is protected from slipping and overload.

However, in such a T stage, it is necessary to divide the output shaft into two halves and support both shaft ends with bearings, so that l, L & are double 21F, and output What are the problems that cause the strength of the shaft to decrease easily? , -1
, the present invention was developed with C4F against the background of this situation, and the purpose of the present invention is 1) that the strength of the outgoing j axis does not decrease, and that the lR5 structure does not have compound t411 and 41. The purpose is to provide a transmission torque limiting device for an electric drive device.

However, what is the gist of the invention? The electric motor, which is arranged in the casing of the drive drive device in the axial direction of the casing and arranged so as to be able to connect 111 points around each output axis of the white body, is capable of supplying driving power to the electric motor (31!). a brush device; and a cludge mechanism disposed between the casing and the motor housing to restrict relative rotation between the gauging and the motor housing, and when the load torque applied to the motor output shaft exceeds a certain level. Clatsuna 1: When the electric motor (J) causes a slip in the receiving shaft and the housing white body rotates, it restricts the transmission of rotational torque to the output shaft, and the output shaft receives more than a certain amount of rotation (111/, 1-luke). J, which restricts the addition of 4 things.
It has a mouth composed of sea urchins.

According to the present invention, the one-person housing itself is rotatably arranged in the casing placed on the electric motor, and the one-person housing itself is rotatably placed between the casing and the one housing. The structure is set up (-notare, a certain limit, C1i
ii l-lux is added to the output shaft
prevents the rotation of the electric one-person housing, and prevents the rotation of the electric one-person housing when the load 1~rook exceeds a certain limit of 1q.
'l M '') J, since it is turned upside down, install a gangway on the output shaft.
Addition: 9 must be J9 or 4+'.

Therefore, the strength of the output shaft (1 (T'
M can be avoided.

Examples of the present invention will be described below based on the drawings (revised l1llll (J
explain. .

In Fig. 1, numeral 10 is a cylindrical gluing device for the curler mold 1fll drive device, which is large enough to be held with one hand, and has a speed reducer (=J21") inside.
The i-do motors 12 are arranged concentrically. Gi 1
The first motor 12 has a motor housing 14 and a speed reducer 15.
The joint aB i'J is located 83 near the joint aB i'J, is provided in the gauging 10 and is supported by the IC ring-shaped bearing 16, and is further supported by the output shaft 1 of the gage 12.
8 is rotatably supported by a bearing 22 disposed at the center of an end key A knob 20 mounted at the end of the casing 10. As a result, the gear Ay-domoke 12 Inside, the entire Gitodo motor 12 is connected to the output shaft 18! It is possible to rotate around the 11111 line. The bearing 1G is arranged so that the motor 12 also receives the thrust l-47i wheel, which the motor 12 receives on the left side of the figure, f'.

An output shaft 18 is located at the center of the motor side end of the Gitodo motor 12.
And in the opposite direction, electricity! Rotating shaft 2 connected to the II machine rotor
4 is provided protrudingly, and its tip is rotatably supported by a brush holder 26 built into the casing 10.

The brush holder 2G has a right bottom circle 11;
I) Then, as shown in Figure 2, apply brush 3 to J, -).
0 b\tori 1.1 has been taken. Bunoshi 30 LL
The part of the flat ring-shaped part of the guide 1/I is cut out, and both *ν1: are opened to form a shape of 1, and the end part I at
J U', bent 171 in the r angle direction, kl at the other end:
An I-contact 1'32 is provided. Brush 30 is JJ
J'3 is located close to the bent portion and fixed to the bottom surface of the brush holder 2G by caulking, and the bent portion protrudes into the inside of the brush holder through a long hole in the holder 2G. ”, the electric jack 31; connected to the bent part passes through the microphone IJ switch 28,
It is connected to the connector 30.

In addition, :] The connector 36 is ring pole [-38, J, drilled (jll).MaI, brush 30 +1
．． It is gradually curved from the JJi 111 opening part to the contact 332 side, and a part of the spiral shape is curved by 1 ml.

At the end of the motor side is an insulating slip ring holder 71I.
O is fixed, and the contactor 32 is pushed into a conductive flat ring-shaped slip ring 42 arranged on the side OK'r portion of the holder/10 so that 1Pff contact is possible.

Further, the slip ring 42 is connected to the motor negative terminal by a conductive wire 44. Also, in the hole in the center of the slip ring holder 40 *: upper] circle 1j of the contactor 46;)
The ends C, .

On the bottom surface of the brush holder 2G, a two-wheel-shaped one-latch spring 52 is arranged so as to be able to come into sliding contact with the flat ring-shaped part of the connector/16, and the other end of the brush spring 52 is connected to the mark cross switch 28. Connected to Connector 3G via:

Inside the casing 10, there is a switch knob 5 at one end Rt%.
4, and the other end has a microphone [I switch lever 56 that presses the switch lever 56]. The lever 56 is supported at its intermediate portion by a fulcrum 58, and by manually pushing the switch knob 54 protruding outside the casing 10, the other end of the lever 56 that was pushing the switch 28 is released, and the switch 28 is turned on. , guard motor 12
is rotating. In addition, when the other end of the lever 5G (4'r (J return spring 60 is fixed, knob j) 4 to f is pressed, there is a constant swing f2ε3, The switch 28 can now be turned off-)-(
There is. [The electric motor connected as shown is 11% in Figure 3.
'l t' NI Mil t&+ η.

The deceleration of the Gitodo motor 12 is on the output shaft 18 side of 1[))H
A clutch) of 4 itr is installed in the engine.

3. In other words, there is a disk-shaped kufutsubuno on the surface of the deceleration rock 15]
- The thing 62 is fixed, and the presser plate 64 is placed on its vertical side (: f, l).
)]--The outer periphery of the circular plate-like part 66 which is pressed by the sill 2 and makes surface contact is formed at an angle ii'i at the position 4'; l, : the engaging leg part 68. 4 including plate-like part 6
G center (output lll1l11 to the circular hole 70 installed)
8 is included in the rotational function (0;
'7) A suppression plate 76 #' is arranged on the outside (,ll, 33 positions on the outer periphery of the circular tli+-shaped part 72, with engagement legs 7-1 for the 11th turn II3). ) The plate 76 has an output of 111111 fl in the circular hole 78 of the plate-like part 720.
The engagement legs 74 are connected to the casing 10.
The suppressing plate 76 is prevented from rotating by being engaged with three engaging surfaces 80 formed near the end portion A1 of the plate 76. Further, a presser plate 64 is provided in the engagement hole 82 formed in the plate-shaped portion 72.
The engaging legs 68 are not engaged, and the presser plate 64 is prevented from rotating. A compression coil spring 84 whose bit diameter gradually increases is provided between each of the plate-shaped parts 6G and 72 of the pressing plate 76 such as the C1 holding plate 64, and biases the holding plate 64 in the direction of pressing the facing 62. It's starting to look like J-ru. The tip of each engagement leg 74 of the pressing plate 76 is pressed into a ring-shaped nug 1-86 provided on the outer periphery of the casing 10;
The pressing force for pressing the presser plate 6'l against the facing 62 (, 1t) via the spring 84 can be adjusted.

When there is a normal load on the output shaft 18, a frictional force acts between the facing 62 and the holding plate 6/'I, causing no relative rotation and the motor 12 is fixed. It continues to function as a normal motor. However, if a load exceeding a certain limit is applied (if the facing 62 is
4 Overcoming any frictional force 1'J causes slippage, causing motor 12
Hakukyu is rotated. That is, the housing 1/I (applied to the output shaft 18) times 1117. Although it receives a reaction force that is in phase with the driving force, the Innolap that restricts the rotation of the housing 1/1 slips, so that the entire housing 12 itself is prevented from rotating. , as a result of -912 or 1) to be transmitted to the output shaft, the transmission 1 ~ torque (, 1 control;
, Zunawa)), deni1t l~ruku (J, -theta 12
The limit will be ＼1′ξ according to the rotation speed of itself3
, the rotational speed of the above-mentioned lid 86 is determined by J.
, move the presser LL plate 76 u1 presser plate 6 'I)''-
Uzuki against Sink 62: It is said that it is J, ri style v tIJ Noh to change the power and make the power of Nen into a woman.

The end 1-1 lug 20 is fitted with a ring-shaped puttu 90 which is fitted into the fitting 10 and the flange portion of the outer periphery of the end 1-11 lug 20 is brought into contact with the end surface of the cooling sink 10. 21, Rijime A-1 is fixed.

The nut 8 (5) is screwed onto the outer periphery of the corner l-9°0, and the movement of the pressing plate 76 and FIJ adjustment is possible as described above.] The center of the knob 20 Hole 92 provided on the back side of hole 92 provided in the section
A bushing ring 5) 0 is slidably fitted into the circular hole 94. Further, the bearing 22 shown in FIG. A compression spring 104 is provided between the bearing 22 and the bushing ring 6 to bias the bushing ring 9G in the direction of the force on the hole 92. As shown in FIGS. 1 and 4, near the outer end of the end key and knob 20 are:
A slit 106 is formed through the center of the ring 1 to 106, and a circular hole 107 for engaging the curler is formed in the center of each of the rings 1 to 106 as shown in FIG. An engagement plate 108 is slidably fitted. In the space 110 provided near both ends of the slit 106, the cutout portions 112 and 113 formed at each end of the curler engagement plate 108 are expanded after being inserted into the sleeves 1 to 106, and are prevented from being pulled out. has been done. Also, the sleeve h
At the other end of 10G, there is a slit 1 as shown in Figure 6.
Four portions 114 of a constant diameter are formed in the shape of 0G and J, with the center portion removed. The compressed coil 11G is inserted into the notch 115 formed in the collar engagement plate 108, and J,
1] Force the knob 118 outward fNJ to engage it (
10E', to avoid eccentricity of the circular hole 107.)
I'm here.

The ill+ end of the output shaft 18 has a relative fJ but 'I'f.
- An engaged portion 120 for driving the curler is formed (
There is. When a curler (not shown) is inserted into the hole 92, the curler can be driven when the engaging portion 120 formed at the end of the curler is fitted into the square hole.
E3 'a Push in and bring out the center of the circular hole 107 with the horn shaft 1
After pushing in the end of the curler shaft, let go of 1118, and the engagement plate 1C) 8 will fit into the ring-shaped groove formed on the outer periphery near the end of the curler shaft. \The fall of the curler is completely prevented 1, sub-) (,1!
The curler can be reliably connected to the Iu/movement device in one step, and removal can also be done inside the cylinder. ,1,l,:,7
J-Ra's end is pushed to 1a10/l, and the ring is pressed by J-1. Any looseness between I'i and the engagement plate 10ε3 is removed.

Furthermore, there is an effect that when the knob 118 is pressed in/V state, the knob 118 (i!I'1) is inserted naturally.

In the apparatus ζl of this embodiment configured as described above, d5,
When the switch knob 54 is pressed, the tip of the swivel bar 56 moves from the microswitch 28 (up), and when the B contact of the microswitch 28 is turned on, drive power is supplied to the gear motor 12 via the brush device, and the rotates, the output shaft 18 rotates, and the curler is rotated.At that point, the load 1 to torque applied to the output horn shaft 18 is small, so the sink 62 and the presser plate 64 slide. The motor 12 remains stationary and does not rotate. Therefore, the hair is curled around Carla. When the spring is removed to the hairline, the load 1-lux applied to the output shaft 18 increases, causing sliding between the holding plate 64 and the seventh acing 62, causing the motor 12 to rotate. As a result, the transmission l-lux transmitted from the motor 12 to the output shaft 18 is limited, thereby preventing the hair from being pulled too hard l'1. - (The pain caused by pulling the hair, hair breakage, and pulling out will be eliminated. Also)) The J-sink 62 can be installed at the side end of the reducer 15.
Since it becomes possible to press the presser plate 04, which contact 1 lily: and the heat dissipation becomes J, 1; 111. It's hard to get the most out of Toshinoru.
) has advantages. Furthermore, it is necessary to support the output shaft 18 in half with bearings C, which makes the IM construction complicated and reduces its strength.

In the embodiment described above, it is possible to install the club 1 between the entire outer periphery and the inner periphery of the casing. Installation, place the ring-shaped presser foot 1k, pressing plate, etc. on the sheathing side, and apply a pressing force of 11 from the outside of the casing in the same manner as the actual interval;
: May be used.

The foregoing description of one embodiment of the present invention is 132 illustrative, but it goes without saying that improvements and modifications can be made in a manner that increases the number of digits.

As described in detail above, the present invention has a structure in which the casing of the 111J+ drive device is rotatably supported and the motor slips when the load exceeds a certain limit. A clutch mechanism is installed to release the static regulation of the motor itself (J-C is used, so the electric motor itself rotates,
The torque transmitted to the output shaft can be easily limited. In addition, it is easy to adjust the slip of the clutch mechanism from outside the casing during operation and take responsibility.

Furthermore, it is not necessary to divide the output shaft into two parts and install bearings for each, thereby complicating the structure and reducing strength.

[Brief explanation of the drawing]

Fig. 1 is a side ff/irji diagram of one embodiment of the present invention, Fig. 2 is a sectional view taken along line II-n of the same embodiment (partially not shown), and Fig. 3 is a similar switch. 2 is a circuit diagram of an electric motor including: Fig. 4 is an A arrow diagram with the parts shown in Fig. 1 omitted, Fig. 5 is an enlarged perspective view of the collar engagement plate and knob, and Fig. 6 is an A arrow diagram with the parts shown in Fig. 4 omitted. It is a diagram. 10: Casing 12: Guard motor (electric motor) 14: Housing 18: Output shaft 30: Brush 42: Slip 1 ring 46: Contactor
P) 2: Brush Pone 62: Clutch Facing 64: Pressing Plate 76: Pressing Plate (Suppressing Part i!J) 84; 2 Figure 28 Figure 3 Figure 5 Figure 6

Claims (1)

[Scope of Claims] 1. A lζ electric motor which is arranged in the axial direction of the non-nothing in the cussing of the electric drive unit U''1 and which is rotatably arranged on the white output shaft line J, and A brush that enables the supply of drive power (1-1) is placed between the motor housing and the sink, and restricts relative rotation between the mounting and the motor housing. When the load 1-lux applied to the electric power supply/output shaft reaches a constant power of 1-, the notch machine (1-1 has 11 slits F and the electric motor 1 housing automatic When one of them rotates, the rotational torque of 1-lux applied to the output shaft is increased by +1, and the application of a rotational torque of more than 1-lux to the output shaft is restricted. ff
! Transmission of lJ drive unit purchase 1 ~ Lukil+lJ limit mechanism. 2 The electric motor is equipped with 111 gear teeth.
1″ni'i range of electric drive described in item 1!, l-
W:j transmission 1 Herc limit mechanism. 3. The clutch includes, on the sides, a clutch facing provided on the end face of the motor side, a presser plate that is pressed by the clutch facing and suppresses the simultaneous movement of the motor housing, and a presser spring that presses the presser plate against the facing. , engages with the retaining portion of the casing to prevent its own rotation, and engages with the engaging portion of the presser slope to prevent rotation of the presser plate.
II: L2) 1) A pressing member that presses the presser plate against the facing via the presser spring is installed near the end of the casing and presses the presser plate via the presser R part. adjust the power