阅读说明：本技术 一种具有电动操作装置的塑壳断路器 (Moulded case circuit breaker with electric operating device ) 是由 陈久强 崔文婷 吴暾华 于 2021-06-28 设计创作，主要内容包括：本发明公开了断路器电动操作装置技术领域的一种具有电动操作装置的塑壳断路器,包括安装在断路器上的电动操作装置,其特征在于：电动操作装置包括壳体,壳体固定安装在断路器一侧,壳体内设有第一空腔和第二空腔,第一空腔内安装有齿轮传动装置,第二空腔内安装有用于驱动断路器的操作手柄前后滑动的执行装置和电机,电机通过齿轮传动装置驱动执行装置进行圆周转动,执行装置的旋转直径可通过调节装置调节；第一空腔内还安装有手动操作装置。(The invention discloses a molded case circuit breaker with an electric operating device, which belongs to the technical field of electric operating devices of circuit breakers, comprises the electric operating device arranged on the circuit breaker, and is characterized in that: the electric operating device comprises a shell, the shell is fixedly arranged on one side of the circuit breaker, a first cavity and a second cavity are arranged in the shell, a gear transmission device is arranged in the first cavity, an executing device and a motor which are used for driving an operating handle of the circuit breaker to slide back and forth are arranged in the second cavity, the motor drives the executing device to rotate circumferentially through the gear transmission device, and the rotating diameter of the executing device can be adjusted through an adjusting device; a manual operating device is also arranged in the first cavity.)

1. A molded case circuit breaker with an electrically operated device, comprising an electrically operated device (1) mounted on the circuit breaker, characterized in that: the electric operating device (1) comprises a shell (2), the shell is fixedly installed (2) on one side of the circuit breaker, a first cavity (3) and a second cavity (4) are arranged in the shell (2), a gear transmission device (5) is installed in the first cavity (3), an executing device (6) and a motor (7) which are used for driving an operating handle of the circuit breaker to slide back and forth are installed in the second cavity (4), the motor (7) drives the executing device (6) to rotate circumferentially through the gear transmission device (5), and the rotating diameter of the executing device (6) can be adjusted through an adjusting device (8); a manual operation device (9) is further installed in the first cavity (3).

2. A molded case circuit breaker with an electric operating device according to claim 1, characterized in that: the gear transmission device (5) comprises a first gear (10) fixedly connected with an output shaft of the motor (7), a second gear (11), a fifth gear (12) and a sixth gear (13) which are rotatably connected to the bottom end of the first cavity (3), a third gear (14) fixedly connected to the upper end of the second gear (11), and a fourth gear (15) fixedly connected to the upper end of the fifth gear (12); the first gear (10) is meshed with the second gear (11), the third gear (14) is meshed with the fourth gear (15), and the fifth gear (12) is meshed with the sixth gear (13).

3. A molded case circuit breaker with an electric operating device according to claim 2, characterized in that: the diameter of the third gear (14) is larger than that of the fourth gear (15), the diameter of the fifth gear (12) is larger than that of the sixth gear (13), a driving rod (30) of a manual operation device (9) is clamped in the middle of the sixth gear (13), and the lower end of the driving rod (30) is connected with the execution device (6).

4. A molded case circuit breaker with an electric operating device according to claim 3, characterized in that: the execution device (6) comprises a mounting plate (16), a mounting rod (17) is movably connected in the mounting plate (16), the rear part of the mounting rod (17) is in threaded connection with the mounting plate (16), the front end of the mounting rod (17) is rotatably connected with an execution guide head (18), a telescopic rod (19) is arranged between the execution guide head (18) and the mounting plate (16), the lower part of the execution guide head (18) is cylindrical, the execution device (6) also comprises a sliding plate (20), sliding grooves (21) are arranged at two ends of the sliding plate (20), the sliding grooves (21) are in sliding fit with a restraint bar (22) on the inner side of the shell (2), the upper end of the sliding plate (20) is provided with a pushing groove (23), the lower part of the straight execution guide head (18) is in sliding fit with the pushing groove (23), the front side of the sliding plate (20) is also provided with a handle installation groove (40) for installing an operation handle.

5. The molded case circuit breaker with an electric operating device according to claim 4, wherein: the adjusting device (8) comprises a worm (25) and a worm wheel (26), a mounting groove (24) for mounting the adjusting device (8) is formed in the front portion of the mounting plate (16), the worm wheel (26) and the worm (25) are rotatably connected in the mounting groove (24), the worm wheel (26) is sleeved outside the mounting rod (17), a plurality of keys (27) are uniformly arranged on the circumference of the inner wall, attached to the mounting rod (17), of the worm wheel (26), a plurality of key grooves (28) are uniformly formed in the circumference of the middle portion of the mounting rod (17), and the key grooves (28) are in sliding fit with the keys (27); the lower end of the worm (25) is fixedly connected with a rotating block (29) outside the mounting plate (16).

6. A molded case circuit breaker with an electric operating device according to claim 1, characterized in that: the manual operation device (9) comprises a driving rod (30), the upper end of the driving rod (30) extends out of the shell (2), a jack (31) which is communicated with the upper end is arranged inside the driving rod (30), a cutting slip (32) is inserted into the jack (31), a first spring (33) is arranged between the lower end of the cutting slip (32) and the bottom end of the jack (31), and the upper end of the cutting slip (32) is fixedly connected with a knob (34); the driving rod (30) is further provided with a first clamping groove (35) in the position of the sixth gear (13), a second clamping groove (36) is arranged on the inner side of the sixth gear (13) and opposite to the first clamping groove (35), a clamping block (37) is connected to the first clamping groove (35) and the second clamping groove (36) in a sliding mode, one side, far away from the sixth gear (13), of the clamping block (37) is connected with the driving rod (30) through a second spring (38), and the clamping block (37) is connected with an inserting strip (32) in the driving rod (30) through a traction rope (39).

Technical Field

The invention relates to the technical field of electric operating devices of circuit breakers, in particular to a molded case circuit breaker with an electric operating device.

Background

The molded case circuit breaker can automatically cut off the current after the current exceeds the trip setting. Plastic housing refers to the use of plastic insulators as the outer housing of the device to isolate the conductors from each other and from the grounded metal parts. Molded case circuit breakers typically contain a thermo-magnetic trip unit, while large molded case circuit breakers are equipped with a solid state trip sensor.

After the plastic case circuit breaker is provided with the electric operating device, the circuit breaker is convenient to remotely control. The existing electric operating device generally drives a sliding plate to slide through the rotation of a cam so as to drive an operating handle to carry out opening and closing operations, because the operating handle of the molded case circuit breaker needs to be moved to a certain position to complete the connection or disconnection of a circuit, and the moving range of the operating handle is fixed when the molded case circuit breaker is produced; in the production process of the electric operating device, the range within which the cam can drive the sliding plate to move is also fixed, and although the electric operating device is produced by matching with a molded case circuit breaker, the device is easy to operate unsmoothly due to the existence of production errors. For example, when the moving range of the sliding plate is larger than that of the operating handle, the cam needs to drive the sliding plate to move continuously, but the operating handle cannot move; or the operating handle needs to be moved further to reach the circuit closed position or the circuit open position, but the furthest position of the slide has been moved.

Based on this, the present invention is directed to a molded case circuit breaker having an electric operation device to solve the above problems.

Disclosure of Invention

In order to solve the above problems, the present invention provides the following technical solutions:

a molded case circuit breaker with an electrically operated device, comprising an electrically operated device mounted on the circuit breaker, characterized in that: the electric operating device comprises a shell, the shell is fixedly arranged on one side of the circuit breaker, a first cavity and a second cavity are arranged in the shell, a gear transmission device is arranged in the first cavity, an executing device and a motor which are used for driving an operating handle of the circuit breaker to slide back and forth are arranged in the second cavity, the motor drives the executing device to rotate circumferentially through the gear transmission device, and the rotating diameter of the executing device can be adjusted through an adjusting device; and a manual operation device is also arranged in the first cavity.

During the use, the motor rotates, drives actuating device circumference through gear drive and rotates, and then makes operating handle slide around, realizes switching on and shutting off the circuit, also can replace motor and gear drive through manual operation device, and direct manual provides power for actuating device, and radius when adjustable actuating device is rotatory through adjusting device, and then the moving range of fine setting slide makes the moving range of slide and operating handle's moving range more unanimous.

As a further scheme of the invention, the gear transmission device comprises a first gear fixedly connected with an output shaft of the motor, a second gear, a fifth gear and a sixth gear which are rotatably connected at the bottom end of the first cavity, a third gear fixedly connected at the upper end of the second gear, and a fourth gear fixedly connected at the upper end of the fifth gear; the first gear is meshed with the second gear, the third gear is meshed with the fourth gear, and the fifth gear is meshed with the sixth gear.

As a further scheme of the present invention, the diameter of the third gear is larger than that of the fourth gear, the diameter of the fifth gear is larger than that of the sixth gear, a driving rod of the manual operation device is clamped in the middle of the sixth gear, and the lower end of the driving rod is connected with the execution device.

During electric operation, the motor drives the first gear to rotate, the first gear drives the sixth gear to rotate through the second gear, the third gear, the fourth gear and the fifth gear, and the sixth gear provides power for the execution device through the driving rod clamped with the sixth gear. Simultaneously through the acceleration of a plurality of gears for the motor rotates by a small margin and can makes the sixth gear rotate one hundred eighty degrees, can make the slide drive operating handle removal more fast.

As a further scheme of the invention, the executing device comprises an installation plate, an installation rod is movably connected in the installation plate, the rear part of the installation rod is in threaded connection with the installation plate, the front end of the installation rod is rotatably connected with an executing guide head, a telescopic rod is arranged between the executing guide head and the installation plate, the lower part of the executing guide head is cylindrical, the executing device also comprises a sliding plate, sliding grooves are arranged at two ends of the sliding plate and are in sliding fit with a constraint strip on the inner side of the shell, a pushing groove is arranged at the upper end of the sliding plate, the lower part of the straight executing guide head is in sliding fit with the pushing groove, and a handle installation groove for installing an operating handle is further arranged on the front side of the sliding plate.

The actuating lever can drive the mounting panel when rotating and rotate, and the mounting panel rotates and drives the installation pole and rotate, and then drives the execution and leads the head and rotate, and the execution is led the head and can be slided in the thrust slot when rotating, promotes the slide and slides along restraint strip forward or backward, and then drives and install the operating handle removal in the mounting groove.

As a further scheme of the invention, the adjusting device comprises a worm and a worm wheel, a mounting groove for mounting the adjusting device is formed in the front part of the mounting plate, the worm wheel and the worm are rotatably connected in the mounting groove, the worm wheel is sleeved outside the mounting rod, a plurality of keys are uniformly arranged on the circumference of the inner wall, which is attached to the mounting rod, of the worm wheel, a plurality of key grooves are uniformly arranged on the circumference of the middle part of the mounting rod, and the key grooves are in sliding fit with the keys; the lower end of the worm is fixedly connected with a rotating block outside the mounting plate.

Adjusting device's specific using-way, through a word rotatory piece, rotatory piece rotates and drives the worm and rotate, and the worm rotates and drives the worm wheel and rotate, and the worm wheel passes through the key and drives the installation pole and rotate, owing to installation pole rear portion and mounting panel threaded connection, so the installation pole can stretch out or indentation mounting panel when rotating, and then drives the execution and leads the head and remove, and then increase or reduce the distance between execution lead head and the actuating lever. The telescopic link can prevent to carry out that the guide head is rotatory, and worm drive worm wheel is speed reduction transmission, and a word plays to rotate by a wide margin and just can make the worm wheel rotate by a small margin, and the installation pole removes by a small margin, is convenient for finely tune, and the self-locking nature is further strengthened to the worm moreover, prevents that the installation pole from rotating when non-manual operation.

As a further scheme of the invention, the manual operation device comprises a driving rod, the upper end of the driving rod extends out of the shell, a jack which is communicated with the upper end is arranged in the driving rod, a cutting slip is inserted in the jack, a first spring is arranged between the lower end of the cutting slip and the bottom end of the jack, and a knob is fixedly connected to the upper end of the cutting slip; the driving rod is further provided with a first clamping groove in the position of the sixth gear, a second clamping groove is oppositely formed in the inner side of the sixth gear and the first clamping groove, a clamping block is connected in the first clamping groove and the second clamping groove in a sliding mode, one side, far away from the sixth gear, of the clamping block is connected with the driving rod through a second spring, and the clamping block is connected with a plug strip in the driving rod through a traction rope.

The specific use method of the manual operation device comprises the steps that the knob is pressed, the knob drives the inserting strip to slide downwards along the inserting hole, the first spring is compressed, the inserting strip moves and can also drive the clamping block to slide through the traction rope, the clamping block slides towards the first clamping groove and is separated from the second clamping groove, the driving rod can be rotated through the knob at the moment, the mounting plate is driven to rotate, and the sixth gear does not rotate at the moment. After the knob rotates one hundred eighty degrees, the knob is loosened, and the clamping block and the inserting strip are reset in a sliding mode under the action of the first spring and the second spring.

Advantageous effects

Compared with the prior art, the invention has the beneficial effects that:

the motor rotates, drives the actuating device circumference through gear drive and rotates, and then makes operating handle slide around, realizes opening and shutting, also can replace motor and gear drive through manual operation device, and direct manual provides power for actuating device, and radius when adjustable actuating device is rotatory through adjusting device, and then the moving range of fine setting slide makes the moving range of slide and operating handle's moving range more unanimous.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic structural view of the present invention after the housing is hidden;

FIG. 4 is a schematic view of the structure of the actuator and the adjustment device of the present invention;

FIG. 5 is a schematic view of the manual adjustment apparatus of the present invention;

FIG. 6 is an enlarged view of portion A of FIG. 5 according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-electric operating device, 2-housing, 3-first cavity, 4-second cavity, 5-gear transmission device, 6-actuating device, 7-motor, 8-adjusting device, 9-manual operating device, 10-first gear, 11-second gear, 12-fifth gear, 13-sixth gear, 14-third gear, 15-fourth gear, 16-mounting plate, 17-mounting rod, 18-actuating guide, 19-telescopic rod, 20-sliding plate, 21-sliding groove, 22-restraining bar, 23-pushing groove, 24-mounting groove, 25-worm, 26-worm wheel, 27-key, 28-key groove, 29-rotating block, 30-driving rod, 31-jack, 32-cutting bar, 33-first spring, 34-knob, 35-first clamping groove, 36-second clamping groove, 37-clamping block, 38-second spring, 39-pulling rope and 40-handle mounting groove.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution:

a molded case circuit breaker with an electric operating device comprises the electric operating device 1 installed on a circuit breaker, wherein the electric operating device 1 comprises a shell 2, the shell is fixedly installed on one side of the circuit breaker, a first cavity 3 and a second cavity 4 are arranged in the shell 2, a gear transmission device 5 is installed in the first cavity 3, an executing device 6 and a motor 7 which are used for driving an operating handle of the circuit breaker to slide back and forth are installed in the second cavity 4, the motor 7 drives the executing device 6 to rotate circumferentially through the gear transmission device 5, and the rotating diameter of the executing device 6 can be adjusted through an adjusting device 8; a manual operating device 9 is also mounted in the first cavity 3.

During the use, motor 7 rotates, drives 6 circumference rotations of final controlling element through gear drive 5, and then makes the operating handle slide around, realizes switching-on/off circuit, also can replace motor 7 and gear drive 5 through manual operation device 9, and direct manual provides power for final controlling element 6, and radius when adjustable final controlling element 6 is rotatory through adjusting device 8, and then the moving range of fine setting slide 20 makes the moving range of slide 20 more unanimous with the moving range of operating handle.

As an embodiment of the present invention, the gear transmission device 5 includes a first gear 10 fixedly connected to an output shaft of the motor 7, a second gear 11, a fifth gear 12 and a sixth gear 13 rotatably connected to a bottom end of the first cavity 3, a third gear 14 fixedly connected to an upper end of the second gear 11, and a fourth gear 15 fixedly connected to an upper end of the fifth gear 12; the first gear 10 meshes with the second gear 11, the third gear 14 meshes with the fourth gear 15, and the fifth gear 12 meshes with the sixth gear 13.

In one embodiment of the present invention, the third gear 14 has a larger diameter than the fourth gear 15, the fifth gear 12 has a larger diameter than the sixth gear 13, a driving rod 30 of the manual operation device 9 is engaged with the middle portion of the sixth gear 13, and the lower end of the driving rod 30 is connected to the actuator 6.

In electric operation, the motor 7 drives the first gear 10 to rotate, the first gear 10 drives the sixth gear 13 to rotate through the second gear 11, the third gear 14, the fourth gear 15 and the fifth gear 12, and the sixth gear 13 provides power for the actuating device 6 through the driving rod 30 clamped with the sixth gear 13. Meanwhile, the motor 7 rotates slightly to enable the sixth gear 13 to rotate one hundred eighty degrees, and the sliding plate 20 can drive the operating handle to move more quickly.

As an embodiment of the present invention, the executing device 6 includes a mounting plate 16, a mounting rod 17 is movably connected in the mounting plate 16, a rear portion of the mounting rod 17 is connected with the mounting plate 16 by a screw thread, a front end of the mounting rod 17 is rotatably connected with an executing guide 18, an expansion rod 19 is arranged between the executing guide 18 and the mounting plate 16, a lower portion of the executing guide 18 is cylindrical, the executing device 6 further includes a sliding plate 20, sliding grooves 21 are arranged at two ends of the sliding plate 20, the sliding grooves 21 are in sliding fit with a constraint bar 22 inside the housing 2, a pushing groove 23 is arranged at an upper end of the sliding plate 20, a lower portion of the executing guide 18 is in sliding fit with the pushing groove 23, and a handle mounting groove 40 for mounting an operating handle is further arranged at a front side of the sliding plate 20.

When the driving rod 30 rotates, the mounting plate 16 is driven to rotate, the mounting plate 16 rotates to drive the mounting rod 17 to rotate, and then the execution guide head 18 is driven to rotate, and the execution guide head 18 slides in the pushing groove 23 when rotating, so that the sliding plate 20 is pushed to slide forwards or backwards along the constraint strip 22, and then the operation handle installed in the mounting groove 24 is driven to move.

As an embodiment of the present invention, the adjusting device 8 includes a worm 25 and a worm wheel 26, a mounting groove 24 for mounting the adjusting device 8 is formed in a front portion of the mounting plate 16, the worm wheel 26 and the worm 25 are both rotatably connected in the mounting groove 24, the worm wheel 26 is sleeved outside the mounting rod 17, a plurality of keys 27 are uniformly arranged on the circumference of an inner wall of the worm wheel 26 attached to the mounting rod 17, a plurality of key slots 28 are uniformly arranged on the circumference of a middle portion of the mounting rod 17, and the key slots 28 are in sliding fit with the keys 27; the lower end of the worm 25 is fixedly connected with a rotating block 29 outside the mounting plate 16.

The concrete using mode of adjusting device 8, through a word rotatory piece 29, rotatory piece 29 rotates and drives worm 25 and rotate, and worm 25 rotates and drives worm wheel 26 and rotates, and worm wheel 26 passes through key 27 and drives installation rod 17 and rotate, because installation rod 17 rear portion and mounting panel 16 threaded connection, so installation rod 17 can stretch out or retract mounting panel 16 when rotating, and then drives and carry out the removal of leading 18, and then increase or reduce and carry out the distance between leading 18 and actuating lever 30. The telescopic link 19 can prevent to carry out that the guide head 18 is rotatory, and worm 25 drive worm wheel 26 is speed reduction transmission, and a word just can make worm wheel 26 rotate for a short time by a wide margin rotating, and installation pole 17 removes for a short time, is convenient for finely tune, and worm 25 further strengthens the auto-lock nature moreover, prevents that installation pole 17 from rotating when non-manual operation.

As an embodiment of the present invention, the manual operation device 9 includes a driving rod 30, an upper end of the driving rod 30 extends out of the housing 2, a jack 31 penetrating through the upper end is arranged inside the driving rod 30, a slip 32 is inserted into the jack 31, a first spring 33 is arranged between a lower end of the slip 32 and a bottom end of the jack 31, and a knob 34 is fixedly connected to the upper end of the slip 32; the driving rod 30 is further provided with a first clamping groove 35 at the position of the sixth gear 13, a second clamping groove 36 is arranged on the inner side of the sixth gear 13 opposite to the first clamping groove 35, clamping blocks 37 are slidably connected in the first clamping groove 35 and the second clamping groove 36, one side of each clamping block 37, which is far away from the sixth gear 13, is connected with the driving rod 30 through a second spring 38, and each clamping block 37 is connected with the corresponding insertion strip 32 in the driving rod 30 through a traction rope 39.

The manual operating device 9 is specifically used in such a way that the knob 34 is pressed, the knob 34 drives the slip 32 to slide downward along the insertion hole 31, the first spring 33 is compressed, the slip 32 moves and also drives the fixture block 37 to slide through the traction rope 39, the fixture block 37 slides into the first slot 35 and is separated from the second slot 36, at this time, the drive rod 30 can be rotated through the knob 34 to drive the mounting plate 16 to rotate, and at this time, the sixth gear 13 does not rotate. After the knob 34 rotates one hundred eighty degrees, the knob 34 is loosened, and the fixture block 37 and the insert 32 are both slidably reset under the action of the first spring 33 and the second spring 38.

One specific application of this embodiment is:

during the use, motor 7 rotates, drives 6 circumference rotations of final controlling element through gear drive 5, and then makes the operating handle slide around, realizes switching-on/off circuit, also can replace motor 7 and gear drive 5 through manual operation device 9, and direct manual provides power for final controlling element 6, and radius when adjustable final controlling element 6 is rotatory through adjusting device 8, and then the moving range of fine setting slide 20 makes the moving range of slide 20 more unanimous with the moving range of operating handle.

In electric operation, the motor 7 drives the first gear 10 to rotate, the first gear 10 drives the sixth gear 13 to rotate through the second gear 11, the third gear 14, the fourth gear 15 and the fifth gear 12, and the sixth gear 13 provides power for the actuating device 6 through the driving rod 30 clamped with the sixth gear 13. Meanwhile, the motor 7 rotates slightly to enable the sixth gear 13 to rotate one hundred eighty degrees, and the sliding plate 20 can drive the operating handle to move more quickly.

When the driving rod 30 rotates, the mounting plate 16 is driven to rotate, the mounting plate 16 rotates to drive the mounting rod 17 to rotate, and then the execution guide head 18 is driven to rotate, and the execution guide head 18 slides in the pushing groove 23 when rotating, so that the sliding plate 20 is pushed to slide forwards or backwards along the constraint strip 22, and then the operation handle installed in the mounting groove 24 is driven to move.

The concrete using mode of adjusting device 8, through a word rotatory piece 29, rotatory piece 29 rotates and drives worm 25 and rotate, and worm 25 rotates and drives worm wheel 26 and rotates, and worm wheel 26 passes through key 27 and drives installation rod 17 and rotate, because installation rod 17 rear portion and mounting panel 16 threaded connection, so installation rod 17 can stretch out or retract mounting panel 16 when rotating, and then drives and carry out the removal of leading 18, and then increase or reduce and carry out the distance between leading 18 and actuating lever 30. The telescopic link 19 can prevent to carry out that the guide head 18 is rotatory, and worm 25 drive worm wheel 26 is speed reduction transmission, and a word just can make worm wheel 26 rotate for a short time by a wide margin rotating, and installation pole 17 removes for a short time, is convenient for finely tune, and worm 25 further strengthens the auto-lock nature moreover, prevents that installation pole 17 from rotating when non-manual operation.

The manual operating device 9 is specifically used in such a way that the knob 34 is pressed, the knob 34 drives the slip 32 to slide downward along the insertion hole 31, the first spring 33 is compressed, the slip 32 moves and also drives the fixture block 37 to slide through the traction rope 39, the fixture block 37 slides into the first slot 35 and is separated from the second slot 36, at this time, the drive rod 30 can be rotated through the knob 34 to drive the mounting plate 16 to rotate, and at this time, the sixth gear 13 does not rotate. After the knob 34 rotates one hundred eighty degrees, the knob 34 is loosened, and the fixture block 37 and the insert 32 are both slidably reset under the action of the first spring 33 and the second spring 38.