TWI550176B - Spindle automatic return device with speed adjustment - Google Patents

Description

Automatic axis homing device with speed adjustment function

The invention relates to a machine shaft automatic homing device with a speed adjustment function, which is a door closer or a ground hinge capable of automatically and slowly closing the door piece after opening the door piece, in particular to a precision adjustable door closer, a ground hinge or a heavenly hinge. The automatic homing device for the automatic slow returning speed of the crankshaft.

At present, a door closer installed at the top of the door piece, or a floor hinge installed at the bottom of the door piece, is provided with a shaft that can interlock the door piece in a base, and a hydraulic mechanism capable of controlling the rotation speed of the machine shaft. When the crankshaft rotates as the door is opened, the hydraulic mechanism can be interlocked to cause the hydraulic mechanism to accumulate the preparatory pressure. When the door piece is released, the preparatory pressure of the hydraulic mechanism can resist the reversal rotation of the crankshaft, and the door piece is returned to the closed position as the shaft rotates slowly.

The oil pressure mechanism is generally provided with an adjustment valve capable of adjusting the opening amount of the oil return passage of the hydraulic oil inside the hydraulic mechanism, thereby adjusting the flow rate of the hydraulic oil to adjust the accumulation of the hydraulic oil to form the preliminary pressure. In turn, it is possible to control the speed at which the door is automatically reset.

However, the maximum angle at which the door piece is opened is between about 90 and an angle of approximately 180 degrees, so that the stroke of the shaft that can drive the shaft is not long, and the hydraulic mechanism must be in the case where the rotation stroke of the shaft is not long. In the following, the hydraulic oil is accumulated enough to resist the preparatory pressure of the regenerative rotation of the crankshaft. Therefore, even if the adjustment valve of the hydraulic mechanism is slightly adjusted, the preparatory pressure accumulated by the hydraulic mechanism is greatly changed, which makes it difficult to precisely adjust the preparatory pressure. , so that the door piece is prone to the situation that the closing speed is too slow or too fast.

In addition, the pressure required for the rotary shaft reset of the mortgage machine will be relatively reduced after the gear shifting. Therefore, under the same load, the pressure required by the medium will be relatively reduced. Currently on the market. The ground hinge or door closer has high pressure operation inside. If it is not strictly controlled by quality, it is easy to have oil leakage. After using for a period of time, its high pressure is also easy to damage the oil seal and oil leakage, which affects the service life.

In view of the above, the present inventors have made years of experience in the production, manufacture and sale of door closers, floor hinges and related equipment and equipment, and have invented the present invention to overcome the above-mentioned deficiencies in the prior art.

In other words, the main object of the present invention is to provide a crankshaft automatic homing device with a speed adjustment function, and a structure capable of increasing the stroke between the crankshaft and the accumulating structure of the automatic return preparatory pressure to overcome the above prior art. If the adjustment valve of the hydraulic mechanism is slightly adjusted, the preparatory pressure accumulated by the hydraulic mechanism will be greatly changed, which makes it difficult to precisely adjust the preparatory pressure, and the door piece is likely to cause the closing speed to be too slow or too fast, and because Oil leakage affects the loss of its service life.

In order to achieve the above object, the automatic shaft homing device of the present invention has a speed adjusting function, and is provided in a base: a crankshaft; a pushing component sleeved on the crankshaft and having a pushing track; Receiving a pushing trajectory of the pushing member, and having a tendency to push the sliding member along a displacement path from a first position toward a second position; an elastic member providing the second member Resetting the position to the first position; at least one first traction portion is disposed on the sliding member; at least one energy storage member has a pushing portion, and the energy storage and discharge can be acted upon by the displacement of the pushing portion The component stores energy, and the stored energy can also be externally pushed by the pushing portion; and at least one push-stroke conversion element is coupled between the first traction portion and the pushing portion, so that the pushing portion is opposite to the first The displacement of the traction portion is enlarged.

Wherein the pushing element comprises a cam, the edge of the cam is used to form a pushing trajectory for pushing the sliding member, and the sliding member is interposed between the cam and the elastic device; the first traction portion includes a first rack, and a first rack extending along the displacement path; the energy storage member includes a cylinder, the pushing portion includes a cylinder rod extending from the cylinder to act on the push stroke conversion member, and a second rack on the cylinder rod, and another end of the cylinder body is provided with at least one flow regulating valve, the push stroke conversion element includes a gear set, and is engaged between the first rack and the second rack; The energy storage and discharge unit is provided with an energy medium output end, and the output end is further provided with a flow regulating valve, and the cam can drive the sliding member to move toward the elastic device along the driving trajectory as the shaft rotates, Driving the cylinder rod to the second rack via the gear set with the first rack, and the elastic device can elastically drive the sliding member to move in the direction of the cam to carry the first rack through the gear set and the first two The rack drives the cylinder rod in reverse. The cylinder sucks and discharges the medium through the piston and the flow regulating valve when the cylinder rod is driven. The flow regulating valve can control the flow rate of the cylinder to suck in and discharge the medium, thereby adjusting The push unit generates a push speed externally.

By the above, the crankshaft can be set as a shaft or a shaft of a door closer, a ground hinge or a heavenly hinge, and the door closer, the ground hinge or the day hinge can be mounted on the door panel. The elastic device can elastically drive the sliding member to push the cam in a normal state; when the door piece is opened, the cam and the shaft can rotate with the door piece, so that the cam drives the sliding member to move toward the elastic device, and compresses the cam An elastic device, and the first rack moves toward the elastic direction with the sliding member, so that the first rack drives the second rack via the gear set, thereby driving the cylinder rod and the piston of the cylinder to drive the cylinder through the flow The adjustment valve draws in the medium to create a pre-pressure that resists automatic return of the shaft.

When the door piece is released, the elastic device releases the compressive elastic force instantaneously, and the elastic driving slider moves in the cam direction, and the first rack moves along the sliding direction of the sliding member, so that the first rack drives the second tooth via the gear set. a rod, which in turn drives the cylinder rod and the piston of the cylinder to drive the cylinder to discharge the medium through the flow regulating valve; during this period, since the flow regulating valve limits the flow of the medium in the cylinder to the outside, the second rack As the cylinder rod and piston move slowly, the second rack slowly drives the first rack via the gear set, so that the slider slowly pushes against the cam and the shaft rotates with the first rack, forcing the door to follow the crankshaft. Slowly turn and return to the closed position.

In this way, the short-distance rotation stroke of the crankshaft can be converted into the long-distance linear displacement stroke of the second rack by the first rack and the gear set, compared to the short-distance rotation stroke of adjusting the crankshaft. The long-distance linear displacement stroke of the second rack, the cylinder rod and the piston is obviously easy to adjust the displacement by the flow regulating valve; therefore, when the speed of the automatic return of the door is adjusted, the flow regulating valve can be directly By adjusting the flow rate of the cylinder to suck in and discharge the medium, the displacement of the second rack, the cylinder rod and the piston per second can be adjusted to a small extent, thereby precisely adjusting the speed of the automatic return of the shaft.

According to the above structure, the slider is slidably disposed on at least one of the sliding track elements. The sliding member is further provided with a guiding member stringing through the elastic device.

According to the above structure, the cam drives the cylinder rod out of the cylinder via the first rack, the gear set and the second rack of the sliding member, the elastic gear passing through the first rack, the gear set and the first part of the sliding member The two racks drive the cylinder rod into the cylinder. Alternatively, the cam drives the cylinder rod into the cylinder via the first rack, the gear set and the second rack of the slider, the elastic via the first rack, the gear set and the second tooth of the slider The strip drives the cylinder rod out of the cylinder.

According to the above structure, the pushing member is provided with a recess for positioning the slider, and a projection for driving the slider to move outward.

According to the above structure, the slider has a roller that can press against the pushing member to reduce the friction between the slider and the cam, so that the cam and the slider can be smoothly transmitted to each other.

According to the above structure, the flow regulating valve comprises a one-way discharge flow regulating valve and a one-way suction flow regulating valve or a control valve, and the one-way discharge flow regulating valve can adjust the discharge flow rate of the medium in the cylinder to control the automatic closing of the door piece. The speed; the one-way suction flow adjustment valve or control valve is capable of controlling the suction flow of the medium into the cylinder to control the speed at which the flap receives opening.

According to the above structure, the second rack extends along the displacement path, which saves the space occupied by the second rack.

According to the above configuration, the gear set can be set as a relative speed increasing gear set formed from the first traction portion toward the pushing portion to lift the linear displacement stroke of the second rack, the cylinder rod and the piston.

According to the above structure, the base is provided with a stop bolt for forming a limit on the sliding member at the second position on the displacement path toward the first position to limit the displacement amount of the sliding member in the direction of the elastic member.

The present invention will be clearly and fully disclosed, and the preferred embodiment will be described in detail to explain the embodiments in detail as follows:

Referring to FIGS. 1 and 3, a schematic diagram of an embodiment of the present invention is disclosed. The automatic homing device of the present invention having a speed adjustment function according to the above description is included, and a shaft 11 is disposed in a base 1. a pushing member 20, a sliding member 4, an elastic member 3, at least one first traction portion 410, at least one energy storage member 50, and at least one push stroke conversion member 60; the pushing member 20 is sleeved on the crankshaft 11 And the pushing element 20 has a pushing trajectory 103 (as shown in FIG. 5); the sliding member 4 receives the pushing trajectory 103 of the pushing element 20, and has the sliding member 4 along a displacement path 104, a tendency of a first position 101 (as shown in FIG. 4) to slide toward a second position 102; the elastic member 3 provides the slider 4 with a function of returning from the second position 102 to the first position 101; The first traction portion 410 is disposed on the sliding member 4; the energy storage member 50 has a pushing portion 510. The displacement of the pushing portion 510 can act on the energy storage member 50 to store energy. The energy can also be externally pushed by the pushing portion 510; Stroke conversion element 60 coupled between the first push portion 410 and pulling portion 510, enabling the push portion 510 with respect to the amount of displacement of the first traction portion 410 is formed to enlarge.

In a more specific implementation, the pushing member 20 includes a set of cams 2 disposed on the crankshaft 11, and the cam 2 is coaxially rotated with the crankshaft 11, and the trailing edge of the cam 2 is used to form a pushing trajectory 103 for pushing the slider 4. The sliding member 4 is slidably disposed between the cam 2 and the elastic member 3 along the displacement path 104; the sliding member 4 is slidably disposed on at least one sliding track member 70, and the sliding track member 70 can be The sliding member 4 is further provided with at least one guiding member 7 striding through the elastic member 3. The guiding member 7 is disposed between the cam 2 and the elastic member 3, and the guiding member 7 Extending along the displacement path 104, the guiding member 7 can be set as a guide rod, and the sliding member 4 is slidably disposed on the guiding member 7.

The first traction portion 410 includes a first rack 41 disposed on the sliding member 4, and the first rack 41 extends along the displacement path 104 on the surface of the sliding member 4. The energy storage unit 50 includes a cylinder 5, which may be a pneumatic cylinder or a hydraulic cylinder. The cylinder 5 is internally provided with a piston 53. The pushing portion 510 includes a function of extending from the cylinder 5. a cylinder rod 51 on the push stroke conversion member 60, and a second rack 52 acting on the cylinder rod 51; specifically, the cylinder rod 51 is connected to the piston 53, and the second rack 52 is provided On the cylinder rod 51, the second rack 52 is extended along the displacement path 104. The cylinder block 5 is provided with one end of the cylinder rod 51. The energy storage element 50 is provided with an energy medium input and output end, and the output end is further provided with a flow regulating valve 8; substantially, the flow regulating valve 8 can be disposed in the cylinder The other end of the body 5. The flow rate adjusting valve 8 can control the flow rate of the medium to be sucked and discharged by the cylinder 5, thereby adjusting the speed at which the pushing portion 510 pushes outward. When the cylinder 5 is set as a pneumatic cylinder, the medium may be a gas; when the cylinder 5 is a hydraulic cylinder, the medium may be hydraulic oil.

The push stroke conversion element 60 includes a gear set 6 that includes a plurality of intermeshing gears 61, 62, 63, 64, 65, 66, and the gears 61, 62, 63, 64, 65, 66 Engaged between the first rack 41 and the second rack 52, the gear set 6 can be set as a relative speed increasing gear set formed by the first pulling portion 410 toward the pushing portion 510. In this embodiment, the first rack 41, the cylinder 5 and the gear set 6 can be arranged in multiple arrays, and the first rack 41 can be disposed on both sides of the slider 4, and the cylinder 5 and the gear The group 6 can be disposed on both sides of the base 1 such that the slider 4 and the elastic member 3 are located between the respective cylinders 5.

As shown in FIG. 5, the cam 2 can rotate along the driving shaft 103 along the driving trajectory 103 to move the slider 4 toward the elastic member 3 to carry the first rack 41 via the gear. The set 6 drives the cylinder rod 51 to the second rack 52. As shown in FIG. 4, the elastic member 3 is capable of elastically driving the slider 4 to move toward the cam 2 to reversely drive the cylinder via the gear set 6 and the second rack 52 with the first rack 41. Rod 51.

In detail, the cam 2 drives the cylinder rod 51 out of the cylinder 5 via the first rack 41, the gear set 6 and the second rack 52 of the slider 4, and the elastic member 3 passes through the sliding member 4 The first rack 41, the gear set 6, and the second rack 52 urge the cylinder rod 51 to retract into the cylinder 5. Alternatively, the cam 2 drives the cylinder rod 51 into the cylinder 5 via the first rack 41, the gear set 6 and the second rack 52 of the slider 4, the first of the elastic members 3 via the slider 4 The rack 41, the gear set 6 and the second rack 52 drive the cylinder rod 51 out of the cylinder 5.

When the cylinder rod 51 is driven, the cylinder 5 sucks in and discharges the medium via the piston 53 and the flow rate adjusting valve 8, and the flow rate adjusting valve 8 includes a one-way discharge flow regulating valve 81 and a one-way suction flow regulating valve. 82. The flow regulating valve 8 can also be a control valve capable of controlling the discharge and suction flow rate of the medium. The one-way discharge flow rate adjustment valve 81 allows the medium to be smoothly discharged from the cylinder 5, and the discharge flow rate of the medium in the cylinder 5 can be adjusted. The one-way suction flow rate adjustment valve 82 allows the medium to be smoothly sucked into the cylinder block 5, and can adjust the suction flow rate of the medium to be sucked into the cylinder block 5, and the one-way suction flow rate adjustment valve 82 is closed when the cylinder 5 discharges the medium.

The end portion of the sliding member 4 is pivotally disposed with a roller 42 that can press against the cam 2 of the pushing member 20 to reduce the friction between the sliding member 4 and the cam 2, so that the cam 2 and the sliding member 4 can be smoothly connected. Inter-drive. The cam 2 of the pushing member 20 is provided with a recess 21 for positioning the roller 42 of the slider 4, and a projection 22 for driving the slider 4 outward in the direction of the elastic member 3. The base 1 is provided with a stop bolt 9 for forming a limit on the displacement path 104 on the displacement path 104 toward the first position 101, which can restrict and adjust the movement of the slider 4 toward the elastic device 3. The amount of displacement.

By the above-mentioned component composition, the crankshaft 11 can be set as a shaft or a shaft of a door closer, a ground hinge or a heavenly hinge, and the door closer, the ground hinge or the day hinge can be mounted on the top or the bottom of the door piece. 4 depicts that the elastic member 3 is capable of elastically driving the slider 4 to the first position 101 in a normal state, so that the roller 42 of the slider 4 is pushed against the recess 21 of the cam 2. As shown in FIG. 5, when the door piece is opened, the cam 2 and the shaft 11 can rotate with the door piece, and the convex portion 22 of the cam 2 drives the sliding member 4 along the pushing trajectory 103 to the elastic member 3. The direction is moved to displace the slider 4 to the second position 102, so that the slider 4 compresses the elastic member 3, so that the elastic member 3 accumulates the elastic force; meanwhile, the first rack 41 moves toward the elastic member 3 along with the slider 4. Moving, the first rack 41 drives the second rack 52 via the gear set 6, thereby driving the cylinder rod 51 and the piston 53 of the cylinder 5, so that the cylinder rod 51 extends out of the cylinder 5 to drive the cylinder 5 through The one-way suction flow rate adjusting valve 82 draws in the medium to form a preliminary pressure against the automatic return of the shaft 11.

Referring to FIG. 4 again, when the door piece is released, the elastic body 3 immediately releases the compressive elastic force, and the elastic driving slider 4 moves toward the cam 2, and the sliding member 4 is displaced to the first position 101, and the first tooth The strip 41 moves in the direction of the cam 2 with the slider 4, so that the first rack 41 drives the second rack 52 via the gear set 6, thereby driving the cylinder rod 51 and the piston 53 of the cylinder 5 in reverse to make the cylinder rod 51 The cylinder 5 is retracted into the cylinder 5 to drive the cylinder 5 to discharge the medium via the one-way discharge flow regulating valve 81. During this period, since the one-way discharge flow regulating valve 81 restricts the flow rate of the medium discharged to the outside of the cylinder 5, the second rack 52 moves slowly with the cylinder rod 51 and the piston 53, and the second rack 52 passes through the second rack 52. The gear set 6 slowly drives the first rack 41 such that the slider 4 is slowly pushed against the cam 2 and the shaft 11 as the first rack 41 is rotationally reset, forcing the flap to return to the closed position as the shaft 11 is slowly rotated.

According to the above, the short-distance rotation stroke of the crankshaft 11 can be converted into the long-distance linear displacement stroke of the second rack 52 by the first rack 41 and the gear set 6, compared to adjusting the short distance of the crankshaft 11. The long stroke linear displacement stroke of the second rack 52, the cylinder rod 51 and the piston 53 is obviously easy to adjust through the one-way discharge flow regulating valve 81 for precise displacement adjustment; therefore, the door is automatically reset and closed. At the speed of the vehicle, the flow rate of the medium discharged from the cylinder 5 can be directly controlled via the one-way discharge flow regulating valve 81, and the displacement of the second rack 52, the cylinder rod 51 and the piston 53 per second can be adjusted to a small extent. Further, the speed at which the shaft 11 is automatically homing is precisely adjusted.

Accordingly, a structure of the first traction portion 410, the push stroke conversion element 60, and the second rack 52 capable of increasing the stroke of the crankshaft 11 is provided between the crankshaft 11 and the push portion 510 of the energy storage and assembly member 50. The above-mentioned precise adjustment of the automatic homing speed of the crankshaft 11 and overcoming the above prior art, slightly adjusting the regulating valve of the hydraulic mechanism also causes a large change in the preliminary pressure accumulated by the hydraulic mechanism, resulting in difficulty in fine adjustment. The pressure is pre-set, and the door piece is prone to a slow or too fast closing speed, and the loss of life due to oil leakage is missing.

In the above, the present invention is only intended to be a preferred embodiment of the present invention, and is not intended to limit the invention, and other equivalent modifications or substitutions that are not departing from the spirit of the invention are intended to be included in the appended claims. Within the scope.

1‧‧‧Base

101‧‧‧ first position

102‧‧‧second position

103‧‧‧Promoting the trajectory

104‧‧‧Displacement path

11‧‧‧Axis

2‧‧‧ cam

20‧‧‧Feeding components

21‧‧‧ recess

22‧‧‧ convex

3‧‧‧elastic

4‧‧‧ Sliding parts

41‧‧‧First rack

410‧‧‧First Traction Department

42‧‧‧Roller

5‧‧‧Cylinder

50‧‧‧ Energy storage components

53‧‧‧Piston

51‧‧‧Cylinder rod

510‧‧‧Pushing Department

52‧‧‧second rack

6‧‧‧ Gear Set

60‧‧‧ Push stroke conversion component

61, 62, 63, 64, 65, 66‧‧‧ gears

7‧‧‧Guide

70 ‧‧‧Sliding track components

8‧‧‧Flow adjustment valve

81‧‧‧One-way discharge flow adjustment valve

82‧‧‧One-way suction flow adjustment valve

9‧‧‧stop bolt

Figure 1 is a generally exploded perspective view of a preferred embodiment of the present invention.

Fig. 2 is a detailed exploded perspective view of Fig. 1.

Fig. 3 is a partially enlarged perspective view of Fig. 1.

Fig. 4 is a plan view showing a state of use of one embodiment of Fig. 1.

Fig. 5 is a plan view showing another use state of the embodiment of Fig. 1.

1‧‧‧Base

104‧‧‧Displacement path

11‧‧‧Axis

2‧‧‧ cam

20‧‧‧Feeding components

21‧‧‧ recess

22‧‧‧ convex

3‧‧‧elastic

4‧‧‧Sliding parts

41‧‧‧First rack

410‧‧‧First Traction Department

5‧‧‧Cylinder

50‧‧‧ Energy storage components

51‧‧‧Cylinder rod

510‧‧‧Pushing Department

52‧‧‧second rack

6‧‧‧ Gear Set

60‧‧‧ Push stroke conversion component

7‧‧‧Guide

Claims (10)

A shaft automatic returning device with a speed adjusting function is provided in a base: a crankshaft; a pushing component sleeved on the crankshaft and having a pushing track; and a sliding member receiving the pushing of the pushing component a trajectory action having a tendency to slide from a first position toward a second position along a displacement path; an elastic member providing a function of returning the slider to the first position from the second position; a first traction portion is disposed on the sliding member; at least one energy storage component has a pushing portion, and the displacement of the pushing portion can act to store energy in the energy storage component, and the storage energy can also be The pushing portion generates a pushing action externally; and at least one pushing stroke converting element is coupled between the first pulling portion and the pushing portion to enlarge the displacement amount of the pushing portion with respect to the first pulling portion. The automatic shaft homing device with a speed adjustment function according to the first aspect of the patent application, wherein the energy storage and discharge unit is provided with an energy medium input and output end, and the output end is further provided with a flow regulating valve, and the flow regulating valve can The flow rate of the energy storage and discharge element sucking and discharging the medium is controlled, thereby adjusting the speed at which the push portion generates the push. The automatic shaft homing device with speed adjustment function according to claim 2, wherein the flow regulating valve comprises a one-way discharge flow regulating valve and at least one one-way suction flow control valve. A crankshaft automatic homing device with a speed adjustment function according to claim 1 or 2 or 3, wherein the first traction portion includes a first rack and the first rack extends along the displacement path. The automatic shaft homing device with a speed adjustment function according to claim 4, wherein the energy storage unit comprises a cylinder, and the pushing portion comprises a cylinder extending from the cylinder and acting on the pushing stroke. a cylinder rod on the component and a second rack provided on the cylinder rod. The automatic shaft homing device with a speed adjustment function according to claim 5, wherein the push stroke conversion element comprises a gear set engaged between the first rack and the second rack. A crankshaft automatic homing device with a speed adjustment function according to claim 5, wherein the second rack extends along the displacement path. A crankshaft automatic homing device having a speed adjustment function according to claim 1 or 2 or 3, wherein the push stroke conversion component is a gear set that forms a relative speed increase from the first traction portion toward the push portion. A crankshaft automatic homing device with a speed adjustment function according to claim 1 or 2 or 3, wherein the push member includes a cam, and an edge of the cam is used to form a push trajectory for pushing the slider, and the slider is Between the cam and the elastic. A crankshaft automatic homing device having a speed adjustment function according to claim 1 or 2 or 3, wherein the slider is slidably disposed on at least one of the sliding track members.