CN104021999B - The regulation actuating mechanism of thermal overload relay - Google Patents
The regulation actuating mechanism of thermal overload relay Download PDFInfo
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- CN104021999B CN104021999B CN201410213164.2A CN201410213164A CN104021999B CN 104021999 B CN104021999 B CN 104021999B CN 201410213164 A CN201410213164 A CN 201410213164A CN 104021999 B CN104021999 B CN 104021999B
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- thermal overload
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Abstract
A kind of regulation actuating mechanism of thermal overload relay, including housing, the setting current cam being arranged on housing, stress actuation arm, transmission levers and homing action mechanism, stress actuation arm is provided with the first driving section coordinated with homing action mechanism driving, the second driving section coordinated with transmission levers transmission, the regulation actuating mechanism of described thermal overload relay also includes regulating arm and the adjusting means being arranged on regulating arm, described adjusting means includes that the size of distance L between and regulating arm is adjustable and the contact surface of profile contacts with setting current cam.The present invention provides a kind of thermal overload relay rational in infrastructure, that action is more reliable to regulate actuating mechanism.
Description
Technical field
The present invention relates to relay field, specifically a kind of thermal overload relay, is particularly a kind of hot mistake
Carry the regulation actuating mechanism of relay.
Background technology
Access when thermal overload relay uses in main circuit, when flowing through and motor same current, thermal element quilt
It is heated to certain bending stroke, but is not enough to promote the homing action mechanism action of thermal overload relay, energy
Ensure normal starting and the operation of motor；When electromotor overload or disconnected phase time, thermal element is heated to bigger
Bending stroke be enough to promote the homing action mechanism generation action of thermal overload relay, be used for controlling electricity with this
The connection of gas circuitry and disjunction.It is applicable to the main circuit of different electric current for meeting product, manufactures thermal overload
During relay, need to be by adjusting regulation actuating mechanism, to homing action mechanism and the relative shift of thermal element
It is adjusted, makes the performance of thermal overload relay, meet application request.
But the regulation actuating mechanism structure of thermal overload relay is complicated in the market, and stability is the highest.And do not have
There is adjustment function, it is impossible to in thermal overload relay manufacture process, homing action mechanism is initial with thermal element
Relative shift accurately adjusts.Regulation actuating mechanism uses the secure fit of resetting-mechanism, with using heat
During overload relay, the involute surface of setting current cam constantly acts on regulation actuating mechanism, makes corresponding
Secure fit frictional force release, cause the initial relative shift of homing action mechanism and thermal element to become
Change, bring the change of product performance, cause product failure.
Summary of the invention
It is an object of the invention to overcome the defect of prior art, it is provided that one is rational in infrastructure, action is more reliable
Thermal overload relay regulation actuating mechanism.
For achieving the above object, present invention employs following technical scheme:
The regulation actuating mechanism of a kind of thermal overload relay, including housing 1, is arranged on adjusting on housing 1
Electric current cam 2, stress actuation arm 4, transmission levers 7 and homing action mechanism 8, stress actuation arm 4 sets
Have that the first driving section 401 coordinated with homing action mechanism 8 transmission coordinates with transmission levers 7 transmission
Two driving sections 403, the regulation actuating mechanism of described thermal overload relay also includes regulating arm 3 and is arranged on
Adjusting means 302 on regulating arm 3, described regulating arm 3 is pivotally mounted on by the first rotating mechanism
On housing 1, stress actuation arm 4 is by the second rotating mechanism and regulating arm 3 hinge-coupled, described regulation
Device 302 include the size of distance L between and regulating arm 3 adjustable and with setting current cam
The contact surface 3020 of profile 201 contact of 2.
Further, the first described rotating mechanism includes the installation axle 101 being arranged on housing 1, spacing spiral shell
Nail 6, the screw 102 being arranged on installation axle 101 and the axis hole 303 being arranged on regulating arm 3, axis hole
303 are sleeved in the outside diameter d installing axle 101 in the way of matched in clearance, the head diameter of stop screw 6
D is more than the outside diameter d of installation axle 101, and stop screw 6 is by making its head with the thread connection of screw 102
It is fixedly connected with the end face installing axle 101, the one of the axis hole 303 of the head of stop screw 6 and regulating arm 3
It is provided with fit clearance X between individual end face.
Further, the first described rotating mechanism includes the spacing hole 103 being arranged on housing 1, spacing spiral shell
Bolt 9, band install the nut 10 of shaft part 10a and the axis hole 303 being arranged on regulating arm 3, axis hole 303 with
The mode of matched in clearance is sleeved on the installation shaft part 10a of nut 10, and caging bolt 9 is through spacing hole 103
Afterwards with nut 10 spiral marking connection, and the end contact pressure of the end face with spacing hole 103 to install shaft part 10a
Caging bolt 9 and nut 10 are fixed on housing 1 by tight mode, the diameter of the major part 10b of nut 10
More than the external diameter of installation shaft part 10a, the major part 10b of nut 10 and the axis hole 303 of regulating arm 3 one
Fit clearance it is provided with between end face.
Further, the second described rotating mechanism includes connecting shaft 5, is formed at the connection end 304 of regulating arm 3
On L-extension 304a and the bending part 400 that is formed in stress actuation arm 4, connect end 304 and L
It is respectively equipped with connecting shaft hole 305 on shape extension 304a, bending part 400 is respectively equipped with rotary shaft hole 402,
Connecting shaft 5 forms hinge-coupled through connecting shaft hole 305 and rotary shaft hole 402.
Further, described adjusting means 302 includes fine adjustment screw 3021, is formed at the regulation of regulating arm 3
Bending extension 301a on end 301, the contact surface 3020 of adjusting means 302 is arranged on fine adjustment screw 3021
An end face on, bending extension 301a is provided with screw hole, fine adjustment screw 3021 and screw hole screw thread
Coordinate and make the profile 201 of the contact surface 3020 on the end face of fine adjustment screw 3021 and setting current cam 2
Contact, the size of distance L between rotation fine adjustment screw 3021 scalable contact surface 3020 and regulating arm 3.
Further, described stress actuation arm 4 is to include long sheet metal 41 and the herringbone of short sheet metal 40
Structure, the first driving section 401 coordinated with homing action mechanism 8 transmission is arranged in short sheet metal 40
Portion, one end of short sheet metal 40 be provided with coordinate with the second rotating mechanism install with rotary shaft hole 402
Bending part 400, one end of long sheet metal 41 is provided with the second driving section 403 coordinated with transmission levers 7 transmission,
The short combination of the other end of the other end of long sheet metal 41 and short sheet metal 40 is fixed.
Further, described regulating arm 3 includes being arranged on the adjustable side 301 of its one end, being arranged on its another
That holds connects end 304, in adjustable side 301 and the axis hole 303 being connected between end 304, adjustable side 301
It is provided with the screw hole of the fine adjustment screw 3021 of device for installing and adjusting 302, connects end 304 and be provided with and the
The connecting shaft 5 of two rotating mechanisms installs the connecting shaft hole 305 coordinated, the axis of connecting shaft hole 305 and axis hole
The axis of 303 is parallel, and the axis of described screw hole is vertical with the axis of axis hole 303.
Further, described setting current cam 2 includes profile 201 and operative end face 200, setting current
Cam 2 is pivotally mounted on housing 1, and profile 201 is in the cavity of housing 1, operating side
Face 200 is exposed at the outside of housing 1.
Further, the profile 201 of described setting current cam 2 be shaped as involute surface.
Further, play installation for coordinating with adjustable side 301 and rotate work in the middle part of described adjusting means 302
Rotation draw-in groove 3025, one end is the contact surface 3020 with a spiral camber.
The regulation actuating mechanism of the thermal overload relay of the present invention passes through the adjusting means arranged on regulating arm,
Realize homing action mechanism required when adjustable manufactures and the relative initial position of thermal element transmission levers, full
Foot manufactures the performance needed for thermal overload relay, makes thermal overload relay action more accurately, finely.
Realize flexible rotating additionally, be pivoted on housing by regulating arm, eliminate original friction fit power,
Utilize the counteracting force that stress actuation arm passes over, it is not necessary to other extra adnexa any can be by simultaneously
Adjustable side is close to the involute surface of setting current cam.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram;
Fig. 2 is front view of the present invention;
Fig. 3 is side view of the present invention;
Fig. 4 is present configuration decomposing schematic representation;
Fig. 5 is stress actuation arm structural representation;
Fig. 6 is regulating arm structural representation;
Fig. 7 is another embodiment schematic diagram of adjusting means of the present invention;
Fig. 8 is that stop screw fixedly mounts section of structure;
Fig. 9 is the embodiment schematic diagram that regulating arm of the present invention is connected with housing.
Detailed description of the invention
The embodiment be given below in conjunction with accompanying drawing 1 to 9, the thermal overload relay further illustrating the present invention is adjusted
The detailed description of the invention of joint actuating mechanism.The regulation actuating mechanism of the thermal overload relay of the present invention be not limited to
The description of lower embodiment.
As Figure 1-3, the regulation actuating mechanism of the thermal overload relay of the present invention, including housing 1, whole
Determine electric current cam 2, regulating arm 3, stress actuation arm 4, connecting shaft 5, stop screw 6, transmission levers 7
With homing action mechanism 8, its middle shell 1 is for accommodating and installing regulation actuating mechanism and thermal overload relay
Other mechanisms, setting current cam 2 is used for adjusting to the current protection value of main circuit thermal overload relay,
Regulating arm 3 is for adjusting stress actuation arm 4 position, stop screw 6 according to arranging of setting current cam 2
For regulating arm 3 is installed spacing with housing 1.Described setting current cam 2 is pivotally mounted on housing
On 1, described regulating arm 3 is pivotally mounted on the sidewall of housing 1 by the first rotating mechanism, regulation
The adjusting means 302 of arm 3 contacts with setting current cam 2, and described stress actuation arm 4 is by second
Rotating mechanism and regulating arm 3 chain connection.Stress actuation arm 4 is provided with joins with homing action mechanism 8 transmission
The second driving section 403 that the first driving section 401 closed coordinates with transmission levers 7 transmission, stress actuation arm 4
Can interact with transmission levers 7 and homing action mechanism 8, when thermal overload relay action, thermal element
It is pushed to stress actuation arm 4 by thermal drivers transmission levers 7 and rotates and act on homing action mechanism 8.
As shown in Figure 4, the regulation actuating mechanism of the thermal overload relay of the present invention, housing 1 is provided with heat
Element transmission levers 7 and homing action mechanism 8.Setting current cam 2 includes profile 201 and operative end face
200, setting current cam 2 is pivotally mounted on housing 1, and makes profile 201 be in housing 1
In cavity, operative end face 200 is exposed at the outside of housing 1, described profile 201 be shaped as involute surface.
Regulating arm 3 mid portion has an axis hole 303, and described housing 1 has a protruding axle 101 of installing, described
Installation axle 101 be toroidal, have the spacing screw 102 for installing stop screw 6 in annulus, peace
During dress, axis hole 303 is sleeved on installation axle 101 and to use stop screw 6 to install spacing, make regulating arm
3 can be provided with adjusting means 302, described regulation dress around installing axle 101 flexible rotating on adjustable side 301
Put the contact surface 3020 of 302 to arrange in the way of tangent with the profile 201 of setting current cam 2, connect
End 304 is by the rotary shaft hole 402 phase chain connection of connecting shaft 5 with stress actuation arm 4, described stress
Actuation arm 4 can interact with transmission levers 7 and homing action mechanism 8, stress effect in normal state
A certain distance can be had, when thermal overload relay moves between arm 4 and transmission levers 7 and homing action mechanism 8
When making, thermal element is heated and promotes transmission levers 7 to coordinate with the second driving section 403 transmission, and drives by masterpiece
Rotate through the first driving section 401 with arm 4 and act on homing action mechanism 8.When regulation thermal overload relay
During action current, regulation setting current cam 2 makes the adjusting means 302 contacted with the involute surface of profile 201
Position changes, and causes the distance between profile 201 and adjustable side 301 to change, thus regulating arm
3 can rotate around installing axle 101, connect end 304 also synchronous rotary and drive stress actuation arm 4 to move, entering
And the distance between stress actuation arm 4 and transmission levers 7 and homing action mechanism 8 is changed,
Reach to adjust the effect of thermal overload relay action current eventually.Additionally, when thermal overload relay manufactures, logical
Cross the adjusting means 302 adjusting adjustable side 301, change the distance of adjustable side 301 and setting current profile 2,
Thus rotated by axis hole 101 and adjust the relative position connecting end 304, it is connected to connect the stress of end 304
The relative position of actuation arm 4 also moves, and causes homing action mechanism 8 and thermal element transmission levers 7
Position relatively changes, it is achieved adjust the homing action mechanism 8 needed for manufacturing and thermal element transmission levers 7
The function of relative initial position.More than design makes the rotary motion of regulating arm 3 more flexibly, eliminates
Original regulating arm 3 and housing 1 friction fit power, the design of adjusting means 302 simultaneously meets the hot mistake of manufacture
Carry the performance needed for relay, make thermal overload relay action more accurately, finely.
As it is shown in figure 5, the stress actuation arm 4 of the regulation actuating mechanism of the thermal overload relay of the present invention, institute
The stress actuation arm 4 stated is to include long sheet metal 41 and the herringbone structure of short sheet metal 40, described people
The short-and-medium sheet metal of character form structure 40 includes the first driving section 401 and bending part 400, the first described driving section
401 is that an oblique angle projection is arranged on the middle part of short sheet metal 40 side and relative with homing action mechanism 8 sets
Put, and can transmission coordinate, at short sheet metal between the first described driving section 401 and homing action mechanism 8
40 one end are additionally provided with and coordinate the bending part 400 with rotary shaft hole 402 installed with the second rotating mechanism;?
One end of long sheet metal 41 is provided with the second driving section 403 coordinated with transmission levers 7 transmission, long sheet metal 41
The short combination of the other end of the other end and short sheet metal 40 fix.The second described driving section 403 and heat unit
Part transmission levers 7 is oppositely arranged, and can between described the second driving section 403 and thermal element transmission levers 7
Transmission coordinates, and when thermal overload relay action, thermal element is by thermal drivers transmission levers 7 and the second driving section
Contact, and promote stress actuation arm 4 rotation to make the first driving section 401 act on homing action mechanism 8.It is subject to
The herringbone structure of power actuation arm 4 designs and is perpendicular to regulating arm 3 plane and is pivotally connected, and can reduce apparatus body
Long-pending, make device compacter.
The regulating arm 3 of the regulation actuating mechanism of the thermal overload relay of the present invention, including being arranged on its one end
Adjustable side 301, be arranged on the connection end 304 of its other end and be positioned at adjustable side 301 be connected end 304 it
Between axis hole 303.Wherein, described adjustable side 301 is included on regulating arm 3 adjustable side 301 formation
Bending extension 301a, described bending extension 301a is provided with adjusting means 302, described tune
Regulating device 302 contacts with profile 201.As shown in Figure 6, a concrete reality of adjusting means 302 of the present invention
Executing example, adjusting means 302 includes fine adjustment screw 3021, and the contact surface 3020 of adjusting means 302 is arranged on
On one end face of fine adjustment screw 3021, the bending extension 301a of adjustable side 301 is provided with installation fine setting
The screw hole of screw 3021, fine adjustment screw 3021 and screw hole threaded engagement also make fine adjustment screw 3021
Contact surface 3020 on end face contacts with the profile 201 of setting current cam 2, rotates fine adjustment screw 3021
The size of distance L between scalable contact surface 3020 and regulating arm 3, then by rotational connection end 304
Relative position, the relative position causing being connected to connecting the stress actuation arm 4 of end 304 also moves,
Realize adjusting the merit of the relative initial position of homing action mechanism 8 and thermal element transmission levers 7 needed for manufacturing
Energy.Described axis hole 303 is arranged on the centre position of regulating arm 3, is arranged on housing by stop screw 6
On the installation axle 101 of the projected side wall of 1.Connect end 304 and be provided with the connecting shaft 5 with the second rotating mechanism
Installing the connecting shaft hole 305 coordinated, the axis of connecting shaft hole 305 is parallel with the axis of axis hole 303, described
The axis of screw hole vertical with the axis of axis hole 303.Regulating arm 3 and stress actuation arm 4 are by second turn
Motivation structure connects in the way of hinge, and the second described rotating mechanism includes connecting shaft 5, is formed at regulating arm
The L-extension 304a connected on end 304 of 3 and the bending part 400 being formed in stress actuation arm 4,
Connect and be respectively equipped with connecting shaft hole 305 on end 304 and L-extension 304a, bending part 400 sets respectively
Rotary shaft hole 402, connecting shaft 5 is had to form hinge-coupled through connecting shaft hole 305 and rotary shaft hole 402.
Regulating arm 3 and the connected mode being connected through the hinge of stress actuation arm 4, can make regulating arm 3 and by masterpiece
Be easily installed with arm 4 and between coordinate flexibly.
The adjusting means 302 of the present invention uses the scheme of fine adjustment screw 3021, simple in construction, contact surface 3020
Coordinate stable with the profile 201 of setting current cam 2, it is possible to realize actuating mechanism 8 and thermal element transmission bar
The intense adjustment of the relative initial position of bar 7.Certainly the adjusting means 302 of the present invention can also use other
Adjusted Option, as used if side of the present invention is with the structure of the setting current cam 2 of involute surface, adjusts
The involute surface side of regulating device 302 side contacts with the adjustable side of regulating arm 3, and opposite side is convex with setting current
Wheel 2 contact.The structure of the adjusting means 302 of the present invention also can be as it is shown in fig. 7, adjusting means 302 one end
Being provided with the square groove 3026 adjusted, middle part is to coordinate with adjustable side 301 to play installation and the rotation of turning effort
Draw-in groove 3025, the other end is the contact surface 3020 with a spiral camber.In the present embodiment, square groove 220 can be inserted
Enter screwdriver for rotation adjustment device 302, naturally it is also possible to be not provided with square groove 3026 by pliers etc. other
Mode rotates.
As shown in Figure 8, the screw fixed installation cross-section structure of the present invention, the first described rotating mechanism includes
Be arranged on housing 1 installs axle 101, stop screw 6, is arranged on the screw 102 installed on axle 101
With the axis hole 303 being arranged on regulating arm 3, axis hole 303 is sleeved on installation axle 101 in the way of matched in clearance
Outside diameter d on, the head diameter D of stop screw 6 more than install axle 101 outside diameter d, stop screw 6
By making its head and the end face installing axle 101 be fixedly connected with the thread connection of screw 102, stop screw
It is provided with fit clearance X, it is ensured that regulation action between the head of 6 and an end face of the axis hole 303 of regulating arm 3
Mechanism can on the installation axle 101 of shell 1 flexible rotating, eliminate original friction fit power, simultaneously profit
The counteracting force passed over by stress actuation arm 4, it is not necessary to other extra adnexa any can will regulate
The adjusting means 302 of arm 3 adjustable side 301 is close to the involute surface 201 of setting current cam.
As shown in Figures 2 and 3, the course of action of the regulation actuating mechanism of the thermal overload relay of the present invention,
When regulating thermal overload relay action current, regulation setting current cam 2 makes to connect with profile 201
Adjusting means 302 position touched changes, and causes the distance between profile 201 and adjustable side 301 to occur
Change, thus regulating arm 3 can rotate around installing axle 101, connects end 304 also synchronous rotary and drives stress
Actuation arm 4 moves, and then makes between stress actuation arm 4 and transmission levers 7 and homing action mechanism 8
Distance changes, and is finally reached the effect of thermal overload relay action current of adjusting.Additionally, at thermal overload
When relay manufactures, by adjusting the adjusting means 302 of adjustable side 301, change adjustable side 301 and adjust
The distance of current profile 2, thus rotated by axis hole 101 and adjust the relative position connecting end 304, connect
Also move in the relative position of the stress actuation arm 4 connecting end 304, cause homing action mechanism 8 He
The relative position of thermal element transmission levers 7 changes, it is achieved adjust the homing action mechanism 8 needed for manufacturing
Function with the relative initial position of thermal element transmission levers 7.
Adjustable side 301 has been conditioned device 302 and has been adjusted to desired position, so that the connection of regulating arm
The relative position of end 304 is fixed, and namely makes rotary shaft hole 402 position of stress actuation arm be fixed.When
When thermal overload relay is used, thermal element heating drives the transmission levers 7 of thermal element to move, and drives transmission
The connection end 403 of the stress actuation arm that lever 7 connects moves, and is passed by amount of movement by the 402 of rotary shaft hole
Pass the upper end of stress actuation arm, then promoted homing action mechanism 8 by the upper end 401 of stress actuation arm, when
The amount of movement passed over reaches to be enough to promote homing action mechanism 8 action, namely achieves thermal overload and continues
Electrical equipment holding function；After thermal overload relay action, when main circuit power-off, thermal element cooling makes transmission levers
When 7 opposite directions move, the amount of movement passed over reduces, when the amount of movement passed over is not enough to remain multiple
State after bit motion mechanism 8 action, homing action mechanism 8 just can reset, and namely achieves thermal overload
Relay reset function.
When transmission levers 7 active force in the same direction of homing action mechanism 8 and thermal element, it is respectively acting on stress
Actuation arm 4, then the connection end 304 of regulating arm is transmitted the force to by stress actuation arm 4, produce and make adjustable side
301 power being close to setting current profile 201, it is possible to allow the adjusting means 302 being in adjustable side 301 be close to
Setting current profile 201.
As it is shown in figure 9, the alternative scheme of the present invention, the first described rotating mechanism includes being arranged on housing
Spacing hole 103 on 1, caging bolt 9, band are installed the nut 10 of shaft part 10a and are arranged on regulating arm 3
On axis hole 303, axis hole 303 is sleeved on the installation shaft part 10a of nut 10 in the way of matched in clearance,
Caging bolt 9 through after spacing hole 103 with nut 10 thread connection, and to install the end face of shaft part 10a
Caging bolt 9 and nut 10 are fixed on housing 1 by the mode compressed with the end contact of spacing hole 103,
The diameter of the major part 10b of nut 10 external diameter more than installation shaft part 10a, the major part 10b of nut 10 and tune
It is provided with fit clearance between one end face of the axis hole 303 of joint arm 3.
Above content is to combine concrete preferred implementation further description made for the present invention, no
Can assert the present invention be embodied as be confined to these explanations.Common for the technical field of the invention
For technical staff, without departing from the inventive concept of the premise, it is also possible to make some simple deductions or replace
Change, all should be considered as belonging to protection scope of the present invention.
Claims (9)
1. a regulation actuating mechanism for thermal overload relay, including housing (1), is arranged on housing (1)
On setting current cam (2), stress actuation arm (4), transmission levers (7) and homing action mechanism
(8), stress actuation arm (4) is provided with the first driving section coordinated with homing action mechanism (8) transmission
(401) the second driving section (403) coordinated with transmission levers (7) transmission, it is characterised in that:
The regulation actuating mechanism of described thermal overload relay also includes regulating arm (3) and is arranged on regulating arm
(3) adjusting means (302) on；
Described regulating arm (3) includes being arranged on the regulation that its one end is connected with setting current cam (2)
Hold (301), be arranged on connection end (304), position that its other end is connected with stress actuation arm (4)
It is used for, with being connected between end (304), the axis hole (303) that regulating arm (3) rotates in adjustable side (301),
Regulating arm (3) is pivotally mounted on housing (1) by the first rotating mechanism, stress actuation arm (4)
By the second rotating mechanism and regulating arm (3) hinge-coupled；
Described adjusting means (302) includes that the size of distance L between and regulating arm (3) is adjustable
And contact surface (3020) that profile (201) with setting current cam (2) contacts；
Described stress actuation arm (4) is to include long sheet metal (41) and the herringbone of short sheet metal (40)
Shape structure, the first driving section (401) coordinated with homing action mechanism (8) transmission is arranged on short sheet metal
(40) middle part, one end of short sheet metal (40) be provided with coordinate with the second rotating mechanism install with rotation
The bending part (400) of shaft hole (402), one end of long sheet metal (41) is provided with and transmission levers (7)
The second driving section (403) that transmission coordinates, the other end of long sheet metal (41) and short sheet metal (40)
The other end combine fixing.
The regulation actuating mechanism of thermal overload relay the most according to claim 1, it is characterised in that: institute
Installation axle (101) that the first rotating mechanism stated includes being arranged on housing (1), stop screw (6),
It is arranged on the screw (102) installed on axle (101) and the axis hole (303) being arranged on regulating arm (3),
Axis hole (303) is sleeved in the way of matched in clearance in the outside diameter d installing axle (101) and makes regulating arm (3)
Rotating around installing axle (101), the head diameter D of stop screw (6) is more than installing outside axle (101)
Footpath d, stop screw (6) is by making its head with the thread connection of screw (102) and installing axle (101)
End face be fixedly connected, of the axis hole (303) of the head of stop screw (6) and regulating arm (3)
Fit clearance X it is provided with between end face.
The regulation actuating mechanism of thermal overload relay the most according to claim 1, it is characterised in that: institute
Spacing hole (103) that the first rotating mechanism stated includes being arranged on housing (1), caging bolt (9),
Band installs the nut (10) of shaft part (10a) and the axis hole (303) that is arranged on regulating arm (3), axle
Hole (303) is sleeved on the installation shaft part (10a) of nut (10) in the way of matched in clearance, spacing spiral shell
Bolt (9) through spacing hole (103) afterwards with nut (10) spiral marking connection, and with install shaft part (10a)
The mode that compresses of the end contact of end face and spacing hole (103) by caging bolt (9) and nut (10)
Being fixed on housing (1), the diameter of the major part (10b) of nut (10) is more than installing shaft part (10a)
External diameter, an end face of the major part (10b) of nut (10) and the axis hole (303) of regulating arm (3)
Between be provided with fit clearance.
The regulation actuating mechanism of thermal overload relay the most according to claim 1, it is characterised in that: institute
The second rotating mechanism stated includes connecting shaft (5), is formed on the connection end (304) of regulating arm (3)
L-extension (304a) and the bending part (400) that is formed in stress actuation arm (4), connect end
And on L-extension (304a), be respectively equipped with connecting shaft hole (305), bending part (400) (304)
On be respectively equipped with rotary shaft hole (402), connecting shaft (5) pass connecting shaft hole (305) and rotary shaft hole
(402) hinge-coupled is formed.
The regulation actuating mechanism of thermal overload relay the most according to claim 1, it is characterised in that: institute
The adjusting means (302) stated includes fine adjustment screw (3021), is formed at the adjustable side (301) of regulating arm (3)
On bending extension (301a), the contact surface (3020) of adjusting means (302) is arranged on fine setting spiral shell
On one end face of silk (3021), bending extension (301a) is provided with screw hole, fine adjustment screw (3021)
With screw hole threaded engagement and make fine adjustment screw (3021) end face on contact surface (3020) and electricity of adjusting
Profile (201) contact of stream cam (2), rotates fine adjustment screw (3021) scalable contact surface (3020)
And the size of distance L between regulating arm (3).
The regulation actuating mechanism of thermal overload relay the most according to claim 1, it is characterised in that: adjust
Joint end (301) is provided with the screw hole of the fine adjustment screw (3021) of device for installing and adjusting (302), connects
End (304) is provided with the connecting shaft (5) with the second rotating mechanism and installs the connecting shaft hole (305) coordinated,
The axis of connecting shaft hole (305) is parallel with the axis of axis hole (303), the axis of described screw hole and axle
The axis in hole (303) is vertical.
The regulation actuating mechanism of thermal overload relay the most according to claim 1, it is characterised in that: institute
The setting current cam (2) stated includes profile (201) and operative end face (200), setting current cam
(2) it is pivotally mounted on housing (1), and profile (201) is in the cavity of housing (1),
Operative end face (200) is exposed at the outside of housing (1).
The regulation actuating mechanism of thermal overload relay the most according to claim 1, it is characterised in that: institute
The profile (201) of the setting current cam (2) stated be shaped as involute surface.
The regulation actuating mechanism of thermal overload relay the most according to claim 1, it is characterised in that: institute
Installation and the rotation of turning effort are played for coordinating with adjustable side (301) in adjusting means (302) middle part stated
Draw-in groove (3025), one end is the contact surface (3020) with a spiral camber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410213164.2A CN104021999B (en) | 2014-05-20 | 2014-05-20 | The regulation actuating mechanism of thermal overload relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410213164.2A CN104021999B (en) | 2014-05-20 | 2014-05-20 | The regulation actuating mechanism of thermal overload relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104021999A CN104021999A (en) | 2014-09-03 |
| CN104021999B true CN104021999B (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410213164.2A Active CN104021999B (en) | 2014-05-20 | 2014-05-20 | The regulation actuating mechanism of thermal overload relay |
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| CN (1) | CN104021999B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4642598A (en) * | 1984-12-28 | 1987-02-10 | Fuji Electric Co., Ltd. | Adjusting device for thermal overload relay |
| JPH0963449A (en) * | 1995-08-21 | 1997-03-07 | Fuji Electric Co Ltd | Thermal overload relay, and assembling method |
| KR100905021B1 (en) * | 2007-08-07 | 2009-06-30 | 엘에스산전 주식회사 | Thermal overload trip apparatus and trip sensitivity adjusting method for the same |
| CN202816832U (en) * | 2012-07-27 | 2013-03-20 | 浙江正泰电器股份有限公司 | Thermal overload relay |
| CN203386658U (en) * | 2013-08-06 | 2014-01-08 | 厦门宏发开关设备有限公司 | Terminal screw gap-reserved contactor |
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2014
- 2014-05-20 CN CN201410213164.2A patent/CN104021999B/en active Active
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| CN104021999A (en) | 2014-09-03 |
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