CN108350718B - Self closing device and self closing device unit - Google Patents

Abstract

The present invention provides a kind of self closing device, and motor just at work, can prevent motor from falling into overload after opening and closing member is configured at the closed position abutted with cabinet.Specifically, self closing device (1) is configured at the closed position (2A) that driving opening and closing member (2) abuts it with cabinet (3).Self closing device (1) has gear mechanism (21), which is transferred to the driving force of motor (20) output shaft (11) of connection opening and closing member (2).Transmission mechanism (21) has the 4th compound gear (26) (driving force escapes mechanism) in the midway of driving force transmission path.In opening and closing member (2) when closed position (2A) is abutted with cabinet 3 and is located at output gear (27) stopping in the downstream side than the 4th compound gear (26) by driving power transmitting, in the case that motor (20) is working, the 4th compound gear (26) allows to act from motor (20) to the transmitting of the driving force of the 4th compound gear (26).It is prevented as a result, when opening and closing member (2) reach closed position (2A), gear mechanism (21) integrally falls into lock state.

Description

Self closing device and self closing device unit

Technical field

The present invention relates to the opening and closing members such as Jiang Gai, door be configured at the closed position abutted with cabinet self closing device and Self closing device unit.

Background technique

The self closing device that the opening and closing members such as Jiang Gai, door are closed towards cabinet is recorded in patent document 1.With document The closed position that the Gai Xiangyu electric cooker ontology (cabinet) that self closing device becomes the electric cooker of opening state abuts is mobile. Self closing device has motor, the driving force of motor is transferred to lid transmission mechanism, drive control motor control Portion processed.

Existing technical literature

Patent document

Patent document 1: No. 3076722 bulletins of Japanese Patent Publication No.

Summary of the invention

The technical problems to be solved by the invention

When opening and closing member is when closed position is abutted with cabinet, opening and closing member is mobile without normal direction closing direction.Therefore, when opening Just at work, transmission mechanism falls into lock state (does not allow driving force to motor after closing part part is configured in closed position Transmitting movement state), motor is in the overload that locked rotor current flows through.Here, if whenever opening and closing member is matched It is placed in the off the case where motor just forms overload repetition, contact of motor etc. will be damaged, the production of motor The product lost of life.

In view of this point, problem of the present invention is that, a kind of self closing device is provided, which can be Opening and closing member is configured in the case that motor after the closed position abutted with cabinet working, and is prevented or inhibited electronic Machine falls into overload.

Technical scheme applied to solve the technical problem

In order to solve the above problems, the present invention provides a kind of self closing device, and being configured at driving opening and closing member makes it The closed position abutted with cabinet, which is characterized in that there is transmission mechanism, the transmission mechanism transmits the driving force of motor To the output shaft for linking the opening and closing member, the transmission mechanism has driving force and escapes mechanism, in the opening and closing member in institute State closed position abutted with the cabinet and the output shaft stop when, in the case that the motor is working, the drive Power escapes the transmitting movement that mechanism allows the driving force to escape mechanism from the motor to the driving force.

According to the present invention, it is configured in opening and closing member after the closed position abutted with cabinet, motor is working In the case where, the transmitting that escaping mechanism by driving force allows driving force to escape mechanism from motor to driving force acts.As a result, It can be avoided transmission mechanism and integrally fall into lock state, therefore, can prevent motor from becoming overload.

In the present invention, can be set as, the driving force, which escapes mechanism, to be had: the first rotary part is entered and From the driving force of the motor；Second rotary part, with can relative rotation relative to first rotary part State and the first rotary part arranged coaxial, output escape the driving force of mechanism from the driving force；Elastomeric element, with institute It states the first rotary part to connect with second rotary part, for the rotation of first rotary part to be transferred to described Two rotary parts, the position that first rotary part leaves rotation centerline radially have an abutting portion, and described second Rotary part has abutting part, and the abutting part, can be from institute when driving the opening and closing member towards the closed position The rear for stating the first direction of rotation of the first rotary part rotation is abutted with the abutting portion, and the elastomeric element performance makes institute The active force for stating abutting part and abutting portion abutting, abuts in the closed position with the cabinet in the opening and closing member And the output shaft, when stopping, in the case that the motor is working, first rotary part overcomes the active force It is rotated to the first direction of rotation, the abutting portion and the abutting part separate.

Accordingly, opening and closing member is configured at the closed position abutted with cabinet, stops in output shaft, the ratio in transmission mechanism drives The transmission mechanism part that power escapes downstream side of the mechanism by driving power transmitting is formed after lock state, in the first rotation Component overcomes the active force of force application part to during the rotation of the first direction of rotation, and driving force is allowed to escape from motor to driving force The transmitting of mechanism acts.Accordingly it is possible to prevent motor falls into overload.

In the present invention, in order to the driving force of motor is transferred to opening and closing member, it is generally desirable to, the transmission mechanism is Gear mechanism, first rotary part and second rotary part are gear respectively.

In the present invention, in order to the abutting part of the abutting portion of the first rotary part and the second rotary part is supported to each other The direction force connect, the elastomeric element can be set as helical spring.

In such a case, it is possible to be, the helical spring is with the state reversed and first rotary part and described The connection of second rotary part, the active force is the restoring force of the helical spring.Accordingly, being easily formed makes the first rotary part Abutting portion and the second rotary part abutting part abut state.

In the present invention, it is generally desirable to, second rotary part is supported on first rotary part.Accordingly, it is easy to By the first rotary part and the second rotary part arranged coaxial.In the present invention, it is generally desirable to, the first rotary part tool It is standby: bottom；The canister portion extended from the outer peripheral edge of the bottom to rotation centerline direction；Set on the tooth of the outer peripheral surface of cartridge Portion；Radially inner side and the axially extending column portion of cartridge from the bottom in cartridge.In the present invention, preferably It is that second rotary part has: disc parts, is inserted into the inside of the cartridge of first rotary part, and It is abutted with the front end face in the column portion；Geared parts, perforation are set to the mounting hole of the disc parts and along rotation centerlines Direction extends.In the present invention, it is generally desirable to, the annulus between the column portion of the bottom and cartridge, if There is the first connecting hole for connecting the helical spring, in the position of the deviation Pivot axle of the disc parts, is equipped with connection Second connecting hole of the helical spring.In the present invention, it is generally desirable to, set on the opening shape tool of the recess portion in the column portion Standby: circular open portion, the circular open portion are the circles centered on rotation centerline；It is sandwiched in therebetween by rotation centerline The first sector open portion that side extends to outer peripheral side from the outer peripheral edge in the circular open portion；Rotation centerline is being sandwiched in it Between the second sector open portion for being extended to outer peripheral side from the outer peripheral edge in the circular open portion of the other side.

In the present invention, it is generally desirable to, the driving force escapes the driving force transmitting side that mechanism is set to the transmission mechanism To downstream side.Hereby it is possible to inhibit the deviation for escaping the torque that mechanism transmits from motor to driving force.Therefore, it is easy to set Determine the active force of elastomeric element, so that during opening and closing member is mobile to closing direction, makes the by the driving force of motor One rotary part and the second rotary part rotate integrally, and after opening and closing member stops at closed position, pass through the drive of motor Power rotates the first rotary part to the first direction of rotation.

Then, the present invention provides a kind of self closing device unit comprising: above-mentioned self closing device； Control unit, motor described in drive control；Detector detects the case where opening and closing member is located at the closed position, When detecting that the opening and closing member reaches the closed position after driving the motor, the control unit makes described electronic Machine stops.

According to the present invention, in the tolerance etc. of configuration error, part due to detector, opening and closing member is configured in and cabinet The case where after the closed position of abutting by control unit drive motor, is inferior, can prevent motor from falling into overload.

In addition, the present invention provides a kind of self closing device unit comprising: above-mentioned self closing device； Control unit, motor described in drive control；Detector detects the case where opening and closing member is located at the closed position, When detecting that the opening and closing member reaches the closed position after driving the motor, the control unit makes described electronic Machine stops after the work stipulated time.

According to the present invention it is possible to prevent the configuration error because of detector, tolerance of part etc., configured in such as opening and closing member After the closed position abutted with cabinet by control unit drive motor in the case where, motor falls into overload.Moreover, In accordance with the invention it is possible to which opening and closing member is pushed on cabinet in closed position.That is, being supported in opening and closing member in closed position and cabinet Connect and output shaft stop after in the case that motor working, the first rotary part overcomes active force to the first direction of rotation Rotation, abutting portion and abutting part separate.Force application part makes the second rotary part to the first direction of rotation (abutting portion as a result, The close direction with abutting part) rotation, so the opening and closing member for being configured at closed position is pushed on by the active force of force application part Cabinet.Therefore, configuration of the opening and closing member to closed position becomes reliable.

Invention effect

According to the present invention, it is configured in what motor after the closed position abutted with cabinet was working in opening and closing member In the case of, the transmitting for escaping the driving force that mechanism allows the upstream side transmission mechanism close to motor to carry out by driving force is dynamic Make.Thereby, it is possible to avoid transmission mechanism that lock state is integrally formed, so can prevent motor from falling into overload.

Detailed description of the invention

Fig. 1 is the explanatory diagram for applying self closing device of the invention.

Fig. 2 is the perspective view of the self closing device of the state after removing a part of shell.

Fig. 3 is the exploded perspective view of the self closing device of Fig. 1.

Fig. 4 is the exploded perspective view of the self closing device of Fig. 1.

Fig. 5 is the explanatory diagram of the second compound gear.

Fig. 6 is the stereoscopic figure of the 4th compound gear.

Fig. 7 is the exploded perspective view of the 4th compound gear.

Fig. 8 is the exploded perspective view of the 4th compound gear.

Fig. 9 is the cross-sectional view of the 4th compound gear.

Figure 10 is the perspective view of the peripheral portion of output gear and output shaft.

Figure 11 is the explanatory diagram of the movement of output gear and output shaft.

Figure 12 is the explanatory diagram of the movement of the output gear and output shaft when opening and closing member is operated.

Figure 13 is the flow chart of the closing motion of opening and closing member.

Figure 14 is the flow chart of the closing motion for the opening and closing member that the control unit of variation carries out.

Specific embodiment

Hereinafter, referring to attached drawing to the embodiment party for applying self closing device and self closing device unit of the invention Formula, that is, self closing device and self closing device unit are illustrated.

(overall structure)

Fig. 1 (a) is the stereoscopic figure of self closing device, and Fig. 1 (b) is that opening and closing member is linked to self closing device Or the explanatory diagram of the state of self closing device unit.Fig. 2 is the vertical of the self closing device after removing a part of shell Body figure.Self closing device 1 is configured at the rotation of opening and closing members such as the lid for making to be formed opening state or door 2 and abuts with cabinet 3 Closed position 2A.Become the state closed by lid or door set on the incorporating section of cabinet 3 as a result,.As shown in Fig. 1 (a), it is automatically closed Device 1 constitutes self closing device unit 7 with control unit 4, switch 5 and detector 6 together.As shown in Fig. 1 (b), opening and closing member 2 Across 90 ° of angular range between the closed position 2A calm along cabinet 3 and the open position 2B erected relative to cabinet 3 It is rotated to two directions.In addition, the position of the closed position 2A and open position 2B of opening and closing member 2 and angular range are not limited to reality Example is applied, can be set depending on the application.

Self closing device 1 has shell 10 and links the output shaft 11 of opening and closing member 2.On output shaft 11 and opening/closing portion The linking part 12 of part 2 exposes outward from the bearing hole 13 of shell 10.The Pivot axle of opening and closing member 2 and output shaft 11 are coaxial Connection.In the following description, if the rotation centerline of output shaft 11 be L0, in self closing device 1 along rotation center The direction of line L0 is X-direction.In addition, setting the side of X-direction as first direction X1, the side opposite with first direction X1 is second Direction X2.

As shown in Fig. 1 (a), shell 10 has the first shell 15 arranged along the X direction, middle casing 16 and second shell 17.First shell 15 is located at the first direction X1 of middle casing 16, and second shell 17 is located at the second direction X2 of middle casing 16. In Fig. 2, second shell 17 has been removed from self closing device 1.

Fig. 3 is from the side second direction X2 towards the exploded perspective view from first direction X1 when self closing device 1.Fig. 4 It is from the side first direction X1 towards the exploded perspective view from second direction X2 when self closing device 1.As shown in Figures 3 and 4, Be accommodated in shell 10 motor 20 as the driving source of self closing device 1, link opening and closing member 2 output shaft 11, The driving force of motor 20 is passed to gear mechanism (transmission mechanism) 21, the potentiometer 28 of output shaft 11.Gear mechanism 21 is Deceleration mechanism.

As shown in figure 3, motor 20 is matched with motor output shaft 20a to second direction X2 posture outstanding in shell 10 It sets.Gear mechanism 21 has the pinion gear 22 for being installed on motor output shaft 20a, the first compound gear engaged with pinion gear 22 23, the second compound gear 24 for being engaged with the first compound gear 23, the third compound gear 25 engaged with the second compound gear 24, The biography that the 4th compound gear engaged with third compound gear 25 (driving force escapes mechanism) 26, is engaged with the 4th compound gear 26 Pass gear i.e. output gear 27.

The motor body 20b of motor 20 is incorporated between first shell 15 and middle casing 16.As shown in Fig. 2, Motor output shaft 20a, which is formed through, projects to 16 He of middle casing in the first opening portion 16a (referring to Fig. 4) of middle casing 16 Between second shell 17.Pinion gear 22 is fixed on motor output shaft 20a and is incorporated in middle casing 16 and second shell 17 Between.

As shown in figure 3, the first compound gear 23 has the first large diameter gear part 23a engaged with pinion gear 22 and coaxial The first small-diameter gear part 23b set on the side first direction X1 of the first large diameter gear part 23a.Second compound gear 24 has With the first small-diameter gear part 23b the second major diameter gear parts 24a engaged and with being located in the second largest diameter gear parts 24a's Second small-diameter gear part 24b of the side first direction X1.Third compound gear 25 has to be engaged with the second small-diameter gear part 24b Third major diameter gear parts 25a and be located in the third-largest diameter gear parts 25a the side first direction X1 third path tooth Take turns part 25b.4th compound gear 26 have the fourth-largest diameter gear parts 26a engaged with third small-diameter gear part 25b and With the 4th small-diameter gear part 26b of the side second direction X2 for being located in the fourth-largest diameter gear parts 26a.Output gear 27 and Four small-diameter gear part 26b engagement.

First compound gear 23 is rotatably supported in the first fulcrum 31 extended in X direction.First fulcrum 31 passes through shape Extend at the second opening portion 16b in middle casing 16 to X-direction.The end part of the first direction X1 of first fulcrum 31 is located at The first supporting part of first shell side 32 of first shell 15 supports.The end part of the second direction X2 of first fulcrum 31 is located at 17 the first supporting part of side 33 of second shell of two shells 17 supports.Here, as shown in Fig. 2, the first compound gear 23 it is first big Diameter gear parts 23a is configured between middle casing 16 and second shell 17 and engages with pinion gear 22.In addition, the first composite teeth First small-diameter gear part 23b of wheel 23 is projected to first shell 15 and middle casing 16 across the second opening portion 16b, with The engagement of second compound gear 24.

Second compound gear 24 is rotatably supported in the second fulcrum 34 extended in X direction.The first of second fulcrum 34 The second supporting part of first shell side 35 that the end part of direction X1 is located at first shell 15 supports.The second party of first fulcrum 31 The first supporting part of middle case side 36 for being located at middle casing 16 to the end part of X2 supports.Third compound gear 25 is rotatable Ground is supported on the third fulcrum 37 extended in X direction.The end part of the first direction X1 of third fulcrum 37 is located at first shell 15 first shell side third supporting part 38 supports.The end part of the second direction X2 of third fulcrum 37 is located at middle casing 16 The second supporting part of middle case side 39 support.4th compound gear 26 is rotatably supported in the 4th extended in X direction Axis 40.The end part of the first direction X1 of 4th fulcrum 40 is located at the 4th supporting part of first shell side 41 of first shell 15 It holds.The end part of the second direction X2 of 4th fulcrum 40 is located at the middle case side third supporting part 42 of middle casing 16 It holds.

Output gear 27 is sector gear.11 arranged coaxial of output gear 27 and output shaft.That is, output shaft 11 and output gear The rotation centerline L0 of wheel 27 is consistent.It is equipped in the fan axis (rotation center) of output gear 27 (sector gear) and penetrates through in X direction Bearing hole 43.

As shown in figure 4, output shaft 11 integrally has the output shaft body part 45 extended along rotation centerline L0 to X-direction With the rotary part, that is, arm 46 rotated around rotation centerline L0.Using the structure, output gear 27 and as rotary part Arm 46 is by arranged coaxial.The linking part 12 for linking opening and closing member 2 is equipped in output shaft body part 45.Arm 46 with open The range that the position of the open position 2B and closed position 2A of closing part part 2 and angular range interlock is rotated.In the present embodiment In, arm 46 is fixed in output shaft 11, so being rotated in range identical with the angular range of opening and closing member 2.Therefore, It is easy miniaturization of the apparatus.Linking part 12 is the through hole for penetrating through output shaft body part 45 in X direction.Link from X-direction Opening shape when portion 12 (through hole) is D word shape.Arm 46 is radially extended along orthogonal with rotation centerline L0.

The output shaft body part 45 of output shaft 11 is rotatably supported by the bearing hole 43 of output gear 27.In addition, output Axis 11 is rotatably supported by first shell 15 and middle casing 16.That is, the end of the first direction X1 of output shaft body part 45 The bearing hole 47 for being located at first shell 15 is divided to rotatably support, the end part quilt of the second direction X2 of output shaft body part 45 Bearing hole 13 set on middle casing 16 rotatably supports.Therefore, output gear 27 is rotatably supported in by first shell 15 and the output shaft body part 45 of output shaft 11 that rotatably supports of middle casing 16.

Potentiometer 28 is configured between middle casing 16 and second shell 17.The potentiometer gear 48 of potentiometer 28 and the 4th 4th small-diameter gear part 26b of compound gear 26 is engaged.More specifically, potentiometer gear 48 is accommodated in set on middle case Recess portion 49 on the face of the side second direction X2 of body 16 (referring to Fig. 3).Opening portion 50, current potential are formed in the side of recess portion 49 Meter gear 48 is engaged via opening portion 50 with the 4th small-diameter gear part 26b.

(the second compound gear)

The second compound gear 24 is described in detail referring to Fig. 5.Fig. 5 (a) is the perspective view of the second compound gear 24, and Fig. 5 (b) is The exploded perspective view of second compound gear 24, Fig. 5 (c) are to be cut the second compound gear 24 with the plane orthogonal with the second fulcrum 34 Disconnected cross-sectional view.Second compound gear 24 has the input side gear component 55 for being rotatably supported in the second fulcrum 34 and output 57, four side gear component 56, helical spring metal shafts 58.Input side gear component 55 is located to be leaned on than outlet side gear component 56 Drive the upstream side of power transmitting.That is, input side gear component 55 is configured at the input side of driving force, outlet side gear component 56 are configured at the outlet side of driving force.Metal shaft 58 is cylindrical shape.

As shown in Fig. 5 (b), input side gear component 55 has bottom 60, from the outer peripheral edge of bottom 60 along first direction X1 The canister portion 61 of extension, set on canister portion 61 outer peripheral surface teeth portion 62, extend in X direction from bottom 60 in the inside of canister portion 61 four A circular arc wall 63.Canister portion 61 constitutes the second major diameter gear parts 24a.It is equipped at the center of bottom 60 for the perforation of the second fulcrum 34 Axis hole 64 (referring to Fig. 5 (c)).

Four height dimensions of the circular arc wall 63 away from bottom 60 are more slightly shorter than the height dimension of canister portion 61.Each circular arc wall 63 along with The coaxial imaginary circle of canister portion 61 extends in the circumferential.Four circular arc walls 63 are equiangularly spaced configuration, in adjacent circular arc wall 63 Between be formed with the gap extended in X direction.Inserted with metal shaft 58 in each gap (four gaps).The diameter of metal shaft 58 Than the thickness gauge modest ability of each circular arc wall 63.In the annulus being formed between canister portion 61 and four circular arc walls 63 inserted with spiral Spring 57.

Outlet side gear component 56 has the inside for being inserted in canister portion 61 and the front end face (first party with four circular arc walls 63 To the end face of X1) it is the round plate 66 that abuts, prominent from round plate 66 to four 63 sides of circular arc wall and be inserted in four circular arc walls 63 Inner circumferential side insertion section 67, from round plate 66 to the direction opposite with insertion section 67 gear part 68 outstanding.68 structure of gear part At the second insertion gear parts 24b.

Insertion section 67 is the cylindrical shape that the inside of four circular arc walls 63 is entrenched in rotatable state.In insertion section 67 Circular outer periphery face, be equiangularly spaced in four positions and be equipped with the slot 69 that extends in X direction.In outlet side gear component 56 Center is equipped with the axis hole 70 for the perforation of the second fulcrum 34.

Second compound gear 24 is to combine input side gear component 55 and outlet side gear component 56 from X-direction and constitute. When combining input side gear component 55 and outlet side gear component 56, metal shaft 58 is inserted into the four of input side gear component 55 Each gap of a circular arc wall 63 configures helical spring 57 in the peripheral side of four circular arc walls 63.Later, by outlet side gear portion Four slots 69 of the insertion section 67 of part 56 are respectively aligned to the space between four circular arc walls 63 of input side gear component 55 Input side gear component is inserted into later in the insertion section 67 of outlet side gear component 56 and round plate 66 by the angle position of face-off 55 canister portion 61.Four metal shafts 58 respectively become inserting for a part insertion outlet side gear component 56 of its inner circumferential side as a result, Enter the state of each slot 69 in portion 67.In addition, the helical spring 57 for being located at the peripheral side of four circular arc walls 63 is played each metal shaft 58 active forces to exert a force towards inner circumferential side.

Here, the second compound gear 24 passes through spiral shell when self closing device 1 keeps opening and closing member 2 mobile to closing direction C It revolves the active force of spring 57 and maintains the state that four metal shafts 58 are respectively embedded into each slot 69 of insertion section 67.Therefore, it inputs Side gear component 55 and outlet side gear component 56 integrally rotate.

On the other hand, in the case where excessive power is input to gear mechanism 21 from 11 side of output shaft, input side gear portion Part 55 and outlet side gear component 56 carry out relative rotation by the power.That is, when defeated from 11 side of output shaft to gear mechanism 21 When entering excessive power, the angle for making the angle position of outlet side gear component 56 and input side gear component 55 deviate alignment is generated The power of position.As a result, due to the insertion section 67 of outlet side gear component 56 slot 69 position relative to input side gear component Space between four circular arc walls 63 of 55 is deviateed in the circumferential, thus metal shaft 58 overcome the active force of helical spring 57 to The peripheral side of insertion section 67 is mobile.As a result, metal shaft 58 is detached from from slot 69, allow outlet side gear component 56 and input side tooth The relative rotation of wheel component 55.Therefore, decayed from the excessive power that 11 side of output shaft inputs by the second compound gear 24, Bu Huixiang The upstream side (20 side of motor) of power transmitting is driven to transmit excessive power.In this way, the second compound gear 24 is torque limit Device.

(the 4th compound gear)

The 4th compound gear 26 is described in detail referring to Fig. 6~Fig. 9.Fig. 6 is the perspective view of the 4th compound gear 26.Fig. 6 is From the side second direction X2 towards the exploded perspective view from first direction X1 when four compound gears 26.Fig. 7 is from second direction Exploded perspective view when four compound gears 26 is observed towards first direction X1 in the side X2.Fig. 8 is from the side first direction X1 towards the Two direction X2 observe exploded perspective view when four compound gears 26.Fig. 9 is will be compound with the plane orthogonal with the 4th fulcrum 40 The cross-sectional view of gear cutting.The diagram of helical spring 73 is omitted in Fig. 9.In addition, in self closing device 1 by 2 court of opening and closing member When driving to closed position 2A, the 4th compound gear 26 is rotated to the first direction of rotation R1 (direction CCW in Fig. 9).

As shown in fig. 6, the 4th compound gear 26 has the first rotary part 71 rotatably supported by the 4th fulcrum 40 And second rotary part 72.In addition, as shown in Figures 7 and 8, the 4th compound gear 26 has and the first rotary part 71 and second Rotary part 72 connects, and the elastomeric element of second component is passed to for the rotation by the first rotary part 71.First rotating part Part 71 is located at the upstream side (20 side of motor) than the second rotary part 72 by driving power transmitting.Elastomeric element is spiral bullet Spring 73.

As shown in fig. 7, the first rotary part 71 has bottom 75, from the outer peripheral edge of bottom 75 X2 the (the 4th in a second direction The direction of the rotation centerline L2 of compound gear 26) extend canister portion 76, set on canister portion 76 outer peripheral surface teeth portion 77, from bottom 75 in the inside and the axially extending column portion 78 of canister portion 76 of canister portion 76.Teeth portion 77 constitutes the fourth-largest diameter gear parts 26a.Column portion 78 height dimensions away from bottom 75 are more slightly shorter than the height dimension of canister portion 76.Specifically, height dimension of the column portion 78 away from bottom 75 The thickness of the disc parts 89 of aftermentioned first rotary part 71 shorter than the height dimension of canister portion 76.Front end face shape in column portion 78 At there is recess portion 79.As shown in figure 8, being equipped with the axis hole 80 for the perforation of the 4th fulcrum 40 at the center of bottom 75.In addition, in bottom 75 Column portion 78 and canister portion 76 between annulus, equipped with the first connecting hole 81 for connecting helical spring 73.

As shown in Fig. 7 and Fig. 9 (a), the opening shape of the recess portion 79 from second direction X2 when column portion 78 has: with rotation Turn the circle i.e. circular open portion 84 centered on center line L2；It is sandwiched in therebetween by the rotation centerline L2 of the 4th compound gear 26 Side is from the outer peripheral edge of rounded portions to outer peripheral side in the first sector open portion 85 that first angle range extends；By rotation center Line L2 is sandwiched in the second sector open that the other side therebetween is extended in second angle range to outer peripheral side from the outer peripheral edge of rounded portions Portion 86.Second angle range is bigger than first angle range.First direction of rotation in the first sector open portion 85 is limited in recess portion 79 The front inner wall face of the front end of R1 is the abutting portion 79a abutted for the abutting part of aftermentioned second rotary part 72.In recess portion 79 limit the rear side inner wall of the rear end of the first direction of rotation R1 in the first sector open portion 85, are to limit the second rotary part 72 With the rotation angle range limited section 79b of the rotation angle range of 71 relative rotation of the first rotary part.

As shown in fig. 6, the second rotary part 72 have insertion the first rotary part 71 canister portion 76 inside and with column portion The gear part that the disc parts 89 and perforation that 78 front end face abuts are set to the mounting hole 90 of disc parts 89 and extend in X direction Part 91.Geared parts 91 have insertion section 92 that is prominent from disc parts 89 to 78 side of column portion and being inserted into recess portion 79, from round plate Part 89 to 92 opposite direction of insertion section gear part 93 outstanding, mounting hole 90 is embedded between insertion section 92 and gear part 93 Mounting portion 94.Gear part 93 constitutes the 4th small-diameter gear part 26b.It is equipped at the center of the second rotary part 72 and supplies the 4th The axis hole 72a that axis 40 penetrates through.In the position of the deviation center of rotation axis L2 of disc parts 89, equipped with connection helical spring 73 Second connecting hole 95.

As shown in Fig. 9 (b), the cross sectional shape after being cut off insertion section 92 with the plane orthogonal with X-direction has and rotates It is central axis L2 coaxial annulus 96, outside in the outer peripheral edge that rotation centerline L2 is sandwiched in side therebetween from annulus 96 It is side the first protruding portion 97 outstanding, outside in the outer peripheral edge that rotation centerline L2 is sandwiched in the other side therebetween from annulus 96 Side the second protruding portion 98 outstanding.Second protruding portion, 98 to the first protruding portion 97 is wide.Here, it is prominent to limit first in insertion section 92 The front side wall surface of the front end of the first direction of rotation R1 in portion 97 out, being can be with the abutting portion 79a (recess portion of the first rotary part 71 79 front inner wall face) abut abutting part 92a.After the first direction of rotation R1 that insertion section 92 limits the first protruding portion 97 The rear side wall surface at end, being can be with the rotation angle range limited section 79b (the rear side inner wall of recess portion 79) of the first rotary part 71 The the second abutting part 92b abutted.

As shown in Figures 7 and 8, helical spring 73 has winder 100, curved from one end first direction X1 of winder 100 It is bent and extend along first direction X1 first connecting portion 101, be bent from one end second direction X2 of winder 100 and along second party The second connecting portion 102 extended to X2.First connecting portion 101 is inserted into the first connecting hole of the bottom 75 of the first rotary part 71 81, and it is fixed on the first rotary part 71.Second connecting portion 102 is inserted into the second of the disc parts 89 of the second rotary part 72 Connecting hole 95, and it is fixed on the second rotary part 72.

4th compound gear 26 is to combine the first rotary part 71 and the second rotary part 72 from X-direction and constitute.In group When closing the first rotary part 71 and the second rotary part 72, firstly, helical spring 73 is configured the column in the first rotary part 71 Its first connecting portion 101 is inserted into the first connecting hole 81 by the peripheral side in portion 78.Then, by the round plate of the second rotary part 72 Part 89 is inserted into the canister portion 76 of the first rotary part 71, and the second connecting portion 102 of helical spring 73 is inserted into the second connecting hole 95.It Afterwards, geared parts 91 are inserted into the mounting hole 90 of disc parts 89, so that its mounting portion 94 is embedded in mounting hole 90, by geared parts The recess portion 79 in the column portion 78 of the first rotary part 71 is inserted into 91 insertion section 92.

Here, when the insertion section 92 of geared parts 91 to be inserted into the recess portion 79 in column portion 78 of the first rotary part 71, it will Geared parts 91 are inserted into while reversing to the second direction of rotation R2 opposite with the first direction of rotation R1.It is being inserted into as a result, Portion 92 is inserted into the state of recess portion 79, and the abutting part 92a of insertion section 92 utilizes active force (restoring force) quilt of helical spring 73 It is pressed from the rear of the first direction of rotation R1, forms the state abutted with the abutting portion 79a of recess portion 79.That is, helical spring 73 Elastic energy is accumulated by torsion, to have the state to the restoring force of the first direction of rotation R1 to be contained.Spiral bullet as a result, Spring 73 plays the active force for abutting abutting part 92a and abutting portion 79a.

In addition it is also possible to be integrally formed disc parts 89 and geared parts 91 in the second rotary part 72.But at this In example, since disc parts 89 and geared parts 91 are set as seperated, so helical spring 73 is connected to the first rotating part In the state of 72 both sides of part 71 and the second rotary part, insertion section 92 is inserted into recess portion 79 while torsion-coil spring 73 It becomes easy.In addition, in this example, in the insertion section 92 of the first rotary part 71, the first protruding portion 97 and the second protruding portion 98 Different shapes is formed, mounting hole 90 has shape corresponding with insertion section 92.Therefore, gear part is being installed to disc parts 89 When part 91, geared parts 91, which will not be installed into, has rotated 180 ° of posture.

When opening and closing member 2 is mobile to closing direction C by the driving of motor 20, that is, logical in the 4th compound gear 26 When crossing the driving force of motor 20 and being rotated to the first direction of rotation R1, the rotation of the abutting portion 79a of the first rotary part 71 and second The abutting part 92a of rotation member 72 is maintained at the state of abutting because of the active force of helical spring 73.Therefore, the first rotary part 71 and second rotary part 72 rotated integrally with state shown in Fig. 9 (a).

On the other hand, opening and closing member 2 closed position 2A abutted with cabinet 3 and output gear 27 stop when motor 20 In the case where working, the first rotary part 71 overcomes active force to rotate to the first direction of rotation R1, abutting portion 79a and supports Socket part 92a is separated.Fig. 9 (b) is the state that the first rotary part 71 overcomes active force to rotate to the first direction of rotation R1.Therefore, After output gear 27 falls into lock state, the 4th compound gear 26 rotates the first rotary part 71, and upstream side is allowed to pass Pass the transmitting movement of the driving force of the motor 20 of mechanism progress.

Here, the 4th compound gear 26 allows the first rotary part 71 to revolve after output gear 27 falls into lock state Turn specified time limit.So-called specified time limit refers to from the abutting portion 79a of the first rotary part 71 and supporting for the second rotary part 72 To the second abutting part 92b of the second rotary part 72 and the rotation angle model of the first rotary part 71 at the time of socket part 92a is separated During enclosing limited section 79b abutting.

It works in this way, the 4th compound gear 26 escapes mechanism as driving force, which escapes mechanism in output gear In the case that motor 20 is working when wheel 27 stops, allowing from motor 20 to the transmission mechanism portion of the 4th compound gear 26 The transmitting movement of the driving force for the motor 20 for dividing (pinion gear 22, the second compound gear 24 and third compound gear 25) to carry out. In this example, mechanism (the 4th compound gear 26) is escaped since gear mechanism 21 has driving force, so can prevent from being opened and closed Component 2 is when closed position 2A is abutted with cabinet 3, gear mechanism 21 whole the case where falling into lock state immediately.

That is, in the present embodiment, due to being configured in the gear set of gear mechanism 21 as more than with defined torque The driving force that idle running acts the torque limiter for transmitting torque reduction escapes mechanism (the 4th compound gear 26), so Make the work of motor 20 so that opening and closing member 2 can prevent motor 20 when closed position 2A is reliably abutted with cabinet 3 Burn, the failures such as the damage of the gear set of gear mechanism 21 or deformation, here, having in the part that opening and closing member 2 and cabinet 3 abut In the case where the standby obturator being made of the elastomer other than sealing ring, when make the work of motor 20 so that opening and closing member 2 exists When closed position 2A is reliably abutted with cabinet 3, with no obturator the case where compared with, big power is applied to gear mechanism 21.In this case, driving force is escaped into mechanism (the 4th compound gear 26) configuration in the gear set of gear mechanism 21 The failure of motor 20, gear mechanism 21 can be effectively prevented in structure.In addition, being made of closer to closed position 2A elastomer Obturator repulsion or by aftermentioned opening and closing member 2 from the closed position 2A lateral opening position 2B force application part driven Elastic energy accumulates the repulsion to be formed and more becomes larger.Therefore, the structure of following the present embodiment to reliably close opening and closing member 2, To protect motor 20 and gear mechanism 21 more satisfactory, in the present embodiment, transmit to opening and closing member 2 with opening and closing member 2 Close to closed position 2A and increase, obturator or drive opening and closing member 2 force application part repulsion more than power, meanwhile, The transmitting for allowing to escape mechanism from motor 20 to driving force acts.In addition, in the present embodiment, driving force escapes mechanism use Two reduce the torque limiter of transmitting torque, but torque limiter is also possible to the torque limit of cutting transmitting torque Device.

(output gear and output shaft)

Figure 10 is from the side first direction X1 towards middle casing 16, output gear 27, output shaft 11 from second direction X2 And the 4th compound gear 26 geared parts 91 when perspective view.Figure 11 (a) is to indicate that opening and closing member 2 is configured in open position The top view of the state of output gear 27 and output shaft 11 when 2B, Figure 11 (b) are to indicate that opening and closing member 2 is configured in close stance The top view of the state of output gear 27 and output shaft 11 when setting 2A.Figure 12 (a) is to indicate that opening and closing member 2 is located at open position The top view of the state of output gear 27 and output shaft 11 when the midway of 2B and closed position 2A, Figure 12 (b) are to indicate to pass through People's controlled opening/closing component 2 makes the shape of its output gear 27 and output shaft 11 from the state of Figure 12 (a) to closing direction C when mobile The top view of state.

As shown in Figure 10, output gear 27 is sector gear.Sector gear has the angular range rotated with opening and closing member 2 The teeth portion 27b of (about 90 degree) corresponding angular range.Output gear 27 drives in self closing device 1 towards closed position 2A S1 (direction CW in Figure 10) rotates along the first direction of rotation when opening and closing member 2.In addition, the first direction of rotation of output gear 27 S1 (direction CW) is the direction opposite with the first direction of rotation R1 (direction CCW) of the 4th compound gear 26, and the described 4th is compound Gear 26 is engaged with the output gear 27.

Arm 46 institute as rotary part of the output gear 27 in the output shaft body part 45 for being integrally provided on output shaft 11 The fan-shaped end face 27c of side have a slot 105, the slot 105 is from the front end face 27a of the first direction of rotation S1 circumferentially direction The second direction of rotation S2 opposite with the first direction of rotation S1 extends.Slot 105 is the circular arc centered on rotation centerline L0 Shape.The inner wall that the end of the second direction of rotation S2 is limited in slot 105 is the abutting part 105a that can be abutted with arm 46. During opening and closing member 2 is mobile between closed position 2A and open position 2B, output gear 27 is defeated shown in Figure 11 (b) It is moved between output gear open position 27B shown in the 27A and Figure 11 (a) of gear closed position out.

As shown in Fig. 4 and Figure 10, arm 46 has along the extension of the end face (end face for being formed with slot 105) of output gear 27 Extension 107 and from extension 107 towards 27 side of output gear protrusion 108 outstanding.Extension 107 and rotation centerline L0 are just It hands over and radially extends.Protrusion 108 is inserted into slot 105 with the state that can be moved in the circumferential.The second rotation in protrusion 108 The trailing flank of direction S2 is that the abutting part 105a of output gear 27 can be abutted from what the rear of the first direction of rotation S1 abutted Portion 108a.

That is, the arm 46 and output gear 27 as the rotary part rotated around rotation centerline L0 constitute so-called pin type Clutch, the pin type clutch are rotated along i.e. the first direction of rotation S1 of driving direction by output gear 27, are set to defeated The abutting part 105a of gear 27 presses the abutting portion 108a of the arm 46 of rotary part and transmits driving force out.Utilize this knot Structure, due to making it than the rotation earthquake earlier of the first direction of rotation S1 of self closing device 1 to the application of opening and closing member 2 external force When making, the driving force transmitting of abutting part 105a and abutting portion 108a are blocked, so the work of the transmission path in driving force For the arm 46 of rotary part, one there is the output shaft 11 of arm 46, the opening and closing member 2 for being linked to output shaft 11 to rely only on External force is acted.Here, in the present embodiment, abutting part 105a and abutting portion 108a both parts directly abut to pass Driving force is passed, but also be can be used and configured the structures of elastomers such as rubber between abutting part 105a and abutting portion 108a and make Abut two components indirectly to transmit driving force with non-contacting structure with magnetic repulsion force.

When self closing device 1 keeps opening and closing member 2 mobile to closing direction C, as shown in Figure 11 (a), Figure 11 (b), edge The abutting part 105a (inner wall of slot 105) of the output gear 27 of first direction of rotation S1 rotation is after the first direction of rotation S1 Side is abutted with the abutting portion 108a of output shaft 11.As a result, output shaft 11 with output gear 27 together along the first direction of rotation S1 rotation.In other words, driving force is transmitted from output gear 27 as the arm of rotary part 46, it is synchronous with output gear 27 along the One direction of rotation S1 rotation.In addition, since the arm 46 as rotary part is synchronous with output gear 27 along the first direction of rotation S1 rotation, so integrally having the S1 rotation along the first direction of rotation of output shaft 11 of arm 46.

Here, the arm 46 as rotary part is not to engage to be rotated with output gear 27, but pass through output The abutting part 105a of gear 27 is abutted with abutting portion 108a and is rotated together with output gear 27.Therefore, such as Figure 12 (a) institute Show, in output gear 27, by the driving of motor 20, S1 rotation makes output shaft 11 with output gear 27 along the first direction of rotation When S1 rotates together along the first direction of rotation (when opening and closing member 2 is driven towards closing direction C), in opening and closing member 2 by people Power operate to closing direction C it is mobile in the case where, as shown in Figure 12 (b), only with the output shaft 11 of the connection of opening and closing member 2 and with S1 rotates the arm 46 of the one of output shaft 11 along the first direction of rotation, and the abutting portion 108a of output shaft 11 is from output gear 27 Abutting part 105a is separated to the front of the first direction of rotation S1.Therefore, when people keeps opening and closing member 2 mobile to closing direction C, tooth (pinion gear 22, first is multiple for the mechanism section for being located at the upstream side than output shaft 11 by driving power transmitting in wheel mechanism 21 Close gear 23, the second compound gear 24, the 4th compound gear 26, output gear 27) and motor 20 will not as load act as With.Thereby, it is possible to keep opening and closing member 2 mobile to closing direction C with weak power.

(control system)

Next, the control system of self closing device unit 7 includes the control unit 4 for having CPU etc..Such as Fig. 1 (a) institute Show, is connected with switch 5 and detector 6 in the input side of control unit 4, it is dynamic that the switch 5 begins to shut off self closing device 1 Make, the detector 6 detects the configuration of opening and closing member 2 the closed position 2A abutted with cabinet 3 the case where.In addition, in control unit 4 Input side, be connected with potentiometer 28 be used as detector 6.Motor 20 is connected in the outlet side of control unit 4.

When Operation switch 5, control unit 4 drives opening and closing member 2 to positive direction drive motor 20 and to closed position 2A. In addition, control unit 4 controls the rotation of motor 20 according to the position of the output monitoring opening and closing member 2 from potentiometer 28.Into And when detecting that opening and closing member 2 reaches closed position after drive motor 20, control unit 4 stops motor 20.And And control unit 4 makes output gear 27 back to output gear open position 27B to opposite direction drive motor 20.

(closing motion for the opening and closing member that self closing device unit is implemented)

Figure 13 is the flow chart of the closing motion for the opening and closing member 2 that self closing device unit 7 is implemented.When in opening and closing member When 2 2B in an open position when Operation switch 5, control unit 4 is to positive direction drive motor 20 (step ST1).As a result, such as Fig. 1 (b) shown in, opening and closing member 2 is driven to closing direction C.Later, when by detector 6 detect opening and closing member 2 configuration closing When closed position 2A (step ST2), control unit 4 stops motor 20 (step ST3).Then, control unit 4 drives electronic to opposite direction Machine 20 makes output gear 27 back to output gear open position 27B (step ST4).

Here, in this example, gear mechanism 21 has driving force and escapes mechanism (the 4th compound gear 26).Therefore, even if Because of reasons such as the configuration error of detector 6, the tolerances of part, the closed position 2A abutted with cabinet 3 is configured in opening and closing member 2 Later by 4 drive motor 20 of control unit in the case where, mechanism (the 4th compound gear 26) is escaped from motor 20 to driving force Transmission mechanism part (pinion gear 22, the second compound gear 24 and third compound gear 25) carry out driving force transmitting movement It is also allowed to defined period.Accordingly it is possible to prevent motor 20 was fallen into when being configured in closed position 2A opening and closing member 2 The case where load state.Therefore, the contact equivalent damage of motor 20, the feelings for causing the life of product of motor 20 to shorten can be prevented Condition.Thereby, it is possible to prevent the life of product of self closing device 1 from shortening.

In addition, in this example, when driving opening and closing member 2 to closing direction C, make the abutting part 105a of output gear 27 from The rear of first direction of rotation S1 is abutted with the abutting portion 108a of output shaft 11, thus make arm 46 as rotary part with Output gear 27 rotates together.Therefore, when opening and closing member 2 is mobile to closing direction C by the driving of motor 20, opening and closing 46 edge of output shaft 11 and arm in the case that component 2 is operated from people to closing direction C movement, only with the connection of opening and closing member 2 First direction of rotation S1 rotation.Therefore, when keeping opening and closing member 2 mobile to closing direction C, it is located in gear mechanism 21 than arm The mechanism section and motor 20 of upstream side of the portion 46 by driving power transmitting will not work as load.Therefore, can Make just to move in driven opening and closing member 2 to driving direction using the weak power that people gives.

In turn, in this example, when detecting the configuration of opening and closing member 2 in closed position 2A, control unit 4 drives to opposite direction Motor 20 makes output gear 27 back to output gear open position 27B.Therefore, it can be avoided and be such as configured at close stance Set the opening and closing member 2 of 2A from people to opening direction it is mobile in the case where, the rotation of the output shaft 11 linked with opening and closing member 2 is transmitted The case where to output gear 27.Therefore, the weak power that the opening and closing member configured in closed position 2A 2 can be made to give using people to Opening direction is mobile.

In addition, in this example, gear mechanism 21 has torque limiter (the second compound gear 24).Therefore, such as to In the case where the direction operation opening and closing member 2 opposite with driving direction, it can prevent gear mechanism 21, motor 20 from damaging.This Outside, as in this embodiment, preferably torque limiter is set to than leaning on electricity as the arm of rotary part 46 in gear mechanism 21 20 side of motivation (upstream side of driving power transmitting).So, due to making opening and closing member 2 will not when acting using external force The load of torque limiter is born, therefore opening and closing member 2 can be made to act with small external force.

Here, it is preferred that driving force escapes mechanism (the 4th compound gear 26) relative to torque limiter (the second compound gear 24) it is applied to the external force of the opening and closing member 2 of movement, is acted with same power or small power.As long as this structure, due to The reliably torque of the function of closing opening and closing member 2 and gear mechanism 21 and motor 20 can be set separately to big external force Defencive function torque, therefore can be improved reliability.

(variation)

Here, when being also possible to detect that opening and closing member 2 reaches closed position after drive motor 20, control unit 4 Stop motor 20 after the stipulated time that works.Figure 14 is the closing motion for the opening and closing member 2 that the control unit 4 of variation carries out Flow chart.

In this example, when the Operation switch 5 in 2 2B in an open position of opening and closing member, control unit 4 drives to positive direction Motor 20 (step ST11).As a result, as shown in Fig. 1 (b), opening and closing member 2 is driven along the closing direction C towards closed position 2A Dynamic, later, when detecting that opening and closing member 2 is configured at closed position 2A (step ST12) by detector 6, control unit 4 makes electronic Machine 20 works stipulated time (step ST13), then, stops motor 20 (step ST14).

Also the same in this example, gear mechanism 21 has driving force and escapes mechanism (the 4th compound gear 26).Therefore, even if Because of reasons such as the configuration error of detector 6, the tolerances of part, the closed position 2A abutted with cabinet 3 is configured in opening and closing member 2 In the case that motor 20 is driven by control unit 4 later, pinion gear 22, the second compound gear 24 and third compound gear 25 (on Trip side transmission mechanism) carry out driving force transmitting movement be also allowed to specified time limit.Accordingly it is possible to prevent whenever opening and closing member The case where 2 configure in closed position 2A, and motor 20 falls into overload.Therefore, the contact etc. of motor 20 can be prevented The case where damaging, the life of product of motor 20 caused to shorten.Thereby, it is possible to prevent the life of product of self closing device 1 from becoming It is short.

In addition, in this example, can be set as the state that opening and closing member 2 is pushed on to cabinet 3 in closed position 2A.That is, In the case where motor 20 is working opening and closing member 2 after closed position 2A is abutted with cabinet 3 and output gear 27 stops, First rotary part 71 of the 4th compound gear 26 overcomes the active force of helical spring 73 to rotate to the first direction of rotation S1, is supported Socket part 79a and abutting part 92a is separated.Helical spring 73 abuts the second rotary part 72 (to the first direction of rotation S1 as a result, Portion 79a and abutting part 92a close direction) rotation, so the opening and closing member 2 for being configured at closed position 2A utilizes helical spring 73 Active force be pushed on cabinet 3.Therefore, opening and closing member 2 becomes reliable to the configuration of closed position 2A.

Here, detecting sets the stipulated time of the work of motor 20 after opening and closing member 2 is configured at closed position 2A Be set to, than the first rotary part 71 to the first direction of rotation S1 rotate and abutting portion 79a and abutting part 92a separate after, directly Specified time limit until the rotation angle range limited section 79b of the first rotary part 71 and the second abutting part 92b is abutted is short.

(other embodiment)

In addition it is also possible to fastener is arranged on opening and closing member 2, be arranged on cabinet 3 detachably with fastener card Locking mechanism only.In this case, locking mechanism can have: engagement pawl, can open with closed position 2A is reached The fastener of closing part part 2 engages；Supporting device, by engagement pawl bearing for can the locking position engaged with fastener and from It is moved between the separated disconnected position of fastener；Spring members exert a force engagement pawl towards locking position；Operation portion is used In keeping the engagement pawl configured in locking position mobile to disconnected position.So, when opening and closing member 2 is configured in closed position 2 When, the fastener of opening and closing member 2 and the locking mechanism locking for being set to cabinet 3, opening and closing member 2 are formed in closed position 2A and are consolidated Due to the state of cabinet 3.

Alternatively, it is also possible to which fastener is arranged on opening and closing member 2, locking mechanism is set in cabinet 3, and have and will be opened and closed The force application part that component 2 exerts a force from mono- side closed position 2A to open position 2B.So, when opening and closing member 2 is in close stance It sets 2A to be fixed in after cabinet 3, when the operation portion of operation locking mechanism keeps engagement pawl mobile to disconnected position, can utilize and apply The active force of power component keeps the opening and closing member 2 of 2A in the closed position mobile to open position 2B.

In addition, in the above example, self closing device 1 rotates opening and closing member 2 along the vertical direction, but can also make open Closing part part 2 rotates in the horizontal direction.

Symbol description

1 self closing device, 2 opening and closing members, the closed position 2A, the closed position 2A, 3 casees Body, 4 control units, 6 detectors, 7 self closing device units, 11 output shafts, 20 motor, 21 gear mechanisms (transmission mechanism), 26 the 4th compound gears (driving force escapes mechanism), 71 first rotating parts Part, 72 second rotary parts, 73 helical springs (elastomeric element), 79a abutting portion, 92a abutting part, The rotation centerline of the 4th compound gear of L2, the first direction of rotation R1

Claims (11)

1. a kind of self closing device, is configured at the closed position that driving opening and closing member abuts it with cabinet, feature exists In,

With transmission mechanism, the driving force of motor is transferred to the output shaft for linking the opening and closing member by the transmission mechanism,

The transmission mechanism has driving force and escapes mechanism,

In the opening and closing member when closed position is abutted with the cabinet and the output shaft stops, the motor is just In the case where work, the driving force, which escapes mechanism, allows to escape the driving of mechanism from the motor to the driving force The transmitting of power acts,

The driving force, which escapes mechanism, to be had:

First rotary part is entered the driving force from the motor；

Second rotary part, with relative to first rotary part can relative rotation state and first rotary part it is same Axis configuration, output escape the driving force of mechanism from the driving force；

Elastomeric element is connect with first rotary part and second rotary part, is used for first rotating part The rotation of part is transferred to second rotary part,

The position that first rotary part leaves rotation centerline radially has abutting portion,

Second rotary part has abutting part, and the abutting part is driving the opening and closing member towards the closed position When, it can be abutted from the rear for the first direction of rotation that first rotary part rotates with the abutting portion,

The elastomeric element plays the active force for abutting the abutting part and the abutting portion,

In the opening and closing member when closed position is abutted with the cabinet and the output shaft stops, the motor is just In the case where work, first rotary part overcomes the active force to rotate to the first direction of rotation, the abutting portion It is separated with the abutting part,

First rotary part has:

Bottom；

The canister portion extended from the outer peripheral edge of the bottom to rotation centerline direction；

Set on the teeth portion of the outer peripheral surface of cartridge；

Radially inner side and the axially extending column portion of cartridge from the bottom in cartridge.

2. self closing device according to claim 1, which is characterized in that

The transmission mechanism is gear mechanism,

First rotary part and second rotary part are gear respectively.

3. self closing device according to claim 1, which is characterized in that

The elastomeric element is helical spring.

4. self closing device according to claim 3, which is characterized in that

The helical spring is connect with the state reversed with first rotary part and second rotary part,

The active force is the restoring force of the helical spring.

5. self closing device according to claim 3, which is characterized in that

Second rotary part is supported on first rotary part.

6. self closing device according to claim 1, which is characterized in that

Second rotary part has:

Disc parts are inserted into the inside of the cartridge of first rotary part, and support with the front end face in the column portion It connects；

Geared parts, perforation are set to the mounting hole of the disc parts and extend along rotation centerline direction.

7. self closing device according to claim 6, which is characterized in that

Annulus between the column portion of the bottom and cartridge connects equipped with connect the helical spring first Hole is connect,

In the position of the deviation Pivot axle of the disc parts, equipped with the second connecting hole for connecting the helical spring.

8. self closing device according to claim 7, which is characterized in that

Opening shape set on the recess portion in the column portion has:

Circular open portion, for the circle centered on rotation centerline；

Rotation centerline is being sandwiched in the first fan that side therebetween extends to outer peripheral side from the outer peripheral edge in the circular open portion Shape opening portion；

In second that rotation centerline is sandwiched in that the other side therebetween extends to outer peripheral side from the outer peripheral edge in the circular open portion Sector open portion.

9. self closing device described according to claim 1~any one of 8, which is characterized in that

The driving force escapes mechanism set on the downstream side of the driving power transmitting of the transmission mechanism.

10. a kind of self closing device unit comprising:

Self closing device according to any one of claims 1 to 9；

Control unit, motor described in drive control；

Detector detects the case where opening and closing member is located at the closed position,

When detecting that the opening and closing member reaches the closed position after driving the motor, the control unit makes described Motor stops.

11. a kind of self closing device unit comprising:

Self closing device according to any one of claims 1 to 9；

Control unit, motor described in drive control；

Detector detects the case where opening and closing member is located at the closed position,

When detecting that the opening and closing member reaches the closed position after driving the motor, the control unit makes described Electric motor operation stops after the stipulated time.