ELECTRICAL ACTUATOR WITH HAMMERING MECHANISM

Abstract

An electrical actuator with hammering mechanism includes a driving device, a transmission assembly driven by the driving device, an arc slot formed in the transmission assembly, a hammer element arranged in the arc slot, and a power valve arranged at one side of the hammer element. The driving device, when in operation, drives the transmission assembly to rotate and the arc slot is set in rotation in unison with the transmission assembly, while the hammer element is held at one side of the power valve so that a relative movement is generated between the arc slot and the hammer element. Thus, at the beginning of rotation of the transmission assembly, before the arc slot gets into impact with the hammer element, no loading that results in resistance is present so that full speed rotation can be conducted to thereby increase the kinetic energy before activation of the power valve.

Claims

1. An electrical actuator with hammering mechanism, comprising: a driving device; a transmission assembly that is arranged at one side of the driving device and driven by the driving device; at least one arc slot that is formed in the transmission assembly; at least one hammer element that is arranged in the arc slot such that operation of the transmission assembly causes the arc slot and the hammer element to move relative to each other; and a power valve that is arranged at one side of the hammer element and receives, through the hammer element, power supplied from the driving device for operation.

2. The electrical actuator with hammering mechanism according to claim 1, wherein the arc slot comprises a constraint end, an impact end, and a sliding space formed between the constraint end and the impact end.

3. The electrical actuator with hammering mechanism according to claim 1, wherein the arc slot comprises a collar section arranged therein to receive and retain the hammer element therein in order to hold the hammer element in position.

4. The electrical actuator with hammering mechanism according to claim 3, wherein the collar section is provided, on an outside thereof, with at least one cushioning section.

5. The electrical actuator with hammering mechanism according to claim 1, wherein the transmission assembly comprises a first gear set connected to the driving device and a second gear set connected to the power valve and driven by the first gear set.

6. The electrical actuator with hammering mechanism according to claim 5, wherein the hammer element is arranged in an eccentric manner with respect to an axis of the second gear set.

7. The electrical actuator with hammering mechanism according to claim 1, wherein the power valve comprises a power shaft coupled to the transmission assembly.

8. The electrical actuator with hammering mechanism according to claim 7, wherein the at least one arc slot and the at least one hammer element comprise multiple arc slots and multiple hammer elements that are uniformly and circumferentially distributed along an outer circumference of the power shaft.

9. The electrical actuator with hammering mechanism according to claim 1, wherein the driving device comprises a reduction motor and the hammer element comprises a hexagonal socket screw.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0012] FIG. 1 is a cross-sectional view showing a preferred embodiment of the present invention.

[0013] FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1.

[0014] FIG. 3 is a schematic view of the preferred embodiment of the present invention.

[0015] FIG. 4 is another schematic view of the preferred embodiment of the present invention.

[0016] FIG. 5 is a schematic view showing another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] The following descriptions are exemplary embodiments only, and are not intended to limit the scope, applicability or configuration of the invention in any way. Rather, the following description provides a convenient illustration for implementing exemplary embodiments of the invention. Various changes to the described embodiments may be made in the function and arrangement of the elements described without departing from the scope of the invention as set forth in the appended claims.

[0018] Referring to FIGS. 1 and 2, which are respectively a cross-sectional view of a preferred embodiment of the present invention and a cross-sectional view taken along line A-A of FIG. 1, these drawings show the present invention comprises:

[0019] a driving device 1, wherein the driving device 1 can be a reduction motor;

[0020] a transmission assembly 2 that is arranged at one side of the driving device 1 and driven by the driving device 1 to operate, the transmission assembly 2 comprising a first gear set 21 connected to the driving device 1 and a second gear set 22 that is connected to a power valve 5, which will be described hereinafter, and is driven by the first gear set 21;

[0021] at least one curved, arc slot 3 formed in the transmission assembly 2, the arc slot 3 comprising a constraint end 31, an impact end 32, and a sliding space 33 formed between the constraint end 31 and the impact end 32;

[0022] at least one collar section 34 arranged in the arc slot 3 to receive extension of a hammer element 4, which will be described hereinafter, therethrough for coupling the hammer element 4;

[0023] at least one cushioning section 341 formed outside the collar section 34;

[0024] at least one hammer element 4 that is arranged in the arc slot 3 in a manner of being eccentric with respect to an axis and of the second gear set 22, wherein when the transmission assembly 2 is put into operation, the arc slot 3 and the hammer element 4 are caused to move relative to each other; and

[0025] a power valve 5 that is arranged at one side of the hammer element 4 to receive power supplied from the driving device 1 through the hammer element 4, the power valve 5 comprising a power shaft 51 coupled to the transmission assembly 2.

[0026] The structure of the technique of this invention can be understood with reference to the above illustration and with arrangement made corresponding to and in combination with such a structure, it is possible, in a limited space, to use a hammering operation to activate the power valve 5 smoothly so as to achieve an advantage of eliminating the issue of inoperability resulting from excessive resistance. A detailed description will be provided below.

[0027] Referring collectively to FIGS. 1-4, which are respectively a cross-sectional view showing a preferred embodiment of the present invention; a cross-sectional view taken along line A-A of FIG. 1; a schematic view of the preferred embodiment of the present invention; and another schematic view of the preferred embodiment of the present invention, with the above-described components assembled together, it can be clearly seen from the drawings that the driving device 1 of the present invention is embodied as a reduction motor and the transmission assembly 2 is made up of the first gear set 21 and the second gear set 22 with the arc slot 3 formed in the second gear set 22, wherein arc slots 3 that are plural in number and are uniformly and circumferentially distributed along an outer circumference of the power shaft 51 are taken as an example of illustration, and the hammer element 4 can be a hexagonal socket screw having a high strength (such as grade 10.9) that is taken as an example in this invention and being set to penetrate through and received in the collar section 34 to improve balance and stability of the hammer element 4 received in the arc slot 3.

[0028] In a practical operation, a user activates the driving device 1 to drive the first gear set 21 of the transmission assembly 2, which in turn drives the second gear set 22 in which the arc slots 3 are formed to rotate. As such, the structural arrangement and utilization of space are simple and no expansion of the size of the electrical actuator is required. Further, the transmission assembly 2 is not directly coupled to the power valve 5 and instead drives the operation by means of the hammer element 4, and also, the hammer element 4 is only put into operation when pushed by the arc slot 3, so that the transmission assembly 2, when rotating, may simultaneously drive the hammer element 4 to slide in the sliding space 33, making the hammer element 4 slide from the constraint end 31 of the arc slot 3 to the impact end 32 to cause impact therebetween. Therefore, the driving device 1 may be operated with full speed rotation in a low resistance condition to accumulate a certain amount of kinetic energy before the arc slot 3 impacts the hammer element 4 so as to increase the energy for opening/closing the power valve 5 to help the driving device 1 to drive the power valve 5 that may involve an increased resistance and to prevent the generation of a large amount of heat and wear, which might lead to shortening of service life, due to the driving device 1 being forced to operate. A cushioning effect may be provided for cushioning the impact occurring on the hammer element 4 with the arrangement of the cushioning section 341 on the collar section 34 in order to improve overall durability.

[0029] Referring to FIG. 5, which is a schematic view of another embodiment of the present invention, it can be clearly seen from the drawing, the instant embodiment is similar to the previous embodiment and the only difference resides in that the number of the arc slot 3a and that of the hammer element 4a are singular. In this embodiment, the arc slot 3a has a C-shaped configuration to greatly increase the length of non-loaded rotation of the driving device and also to increase the range of rotational motion to heighten the upper limit of accumulation of kinetic energy for the driving device.

[0030] It will be understood that each of the elements described above, or two or more together may also find a useful application in other types of methods differing from the type described above.

[0031] While certain novel features of this invention have been shown and described and are pointed out in the annexed claims, it is not intended to be limited to the details above, since it will be understood that various omissions, modifications, substitutions and changes in the forms and details of the device illustrated and in its operation can be made by those skilled in the art without departing in any way from the claims of the present invention.