Linear displacement over-torque protection components

Abstract

The present invention relates to a linear displacement over-torque protection component, comprising a mounting seat, an electromagnetic switch, a connecting rod, a moving seat, a push block and an adjusting screw, wherein the electromagnetic switches are a pair, symmetrically arranged on both sides of the mounting seat, the connecting rod is slidably connected to the mounting seat, and is correspondingly arranged between the two electromagnetic switches, the moving seat is fixed on the connecting rod, the push blocks are a pair, correspondingly arranged on both sides of the moving seat, and respectively correspond to the buttons of the electromagnetic switch, the adjusting screw is arranged on the moving seat, the adjusting screw is connected to the push block, and the adjusting screw can drive the push block to slide forward and backward along the moving seat. The linear displacement over-torque protection component is directly connected to the worm, in the same direction as the worm movement, has a more sensitive reaction to the worm movement, has a higher precision, has better overload protection for the electric actuator, is easy to install and maintain, has a lower production cost, and has a value for promotion and use.

Description

Technical field:

[0001] The invention relates to the technical field of electric actuators, and in particular to a linear displacement over-torque protection component for electric actuators. Background technology:

[0002] Most of the existing over-torque protection mechanisms are connected to the side of the worm of the electric actuator, which results in a complex structure of the electric actuator and requires a large installation space, which is not conducive to assembly and subsequent maintenance, and is prone to affecting accuracy after a long period of use. Summary of the invention:

[0003] In order to solve the above problems, the present invention provides a linear displacement over-torque protection component which has a simple structure, is easy to install and maintain, has a quick response, and has higher precision.

[0004] The present invention is achieved through the following technical solutions:

[0005] A linear displacement over-torque protection component comprises a mounting seat, an electromagnetic switch, a connecting rod, a movable seat, a push block and an adjusting screw. The electromagnetic switches are a pair and are symmetrically arranged on both sides of the mounting seat. The connecting rod is slidably connected to the mounting seat and is correspondingly arranged between the two electromagnetic switches. The movable seat is fixed on the connecting rod. The push blocks are a pair and are correspondingly arranged on both sides of the movable seat and respectively correspond to the buttons of the electromagnetic switch. The adjusting screw is arranged on the movable seat and is connected to the push block. The adjusting screw can drive the push block to slide back and forth along the movable seat.

[0006] In order to simplify the overall installation structure and reduce the overall weight, the mounting seat is rectangular, the electromagnetic switch is arranged at the left and right ends of the mounting seat, the front and rear ends of the mounting seat are respectively integrally formed with supports, the two ends of the connecting rod are respectively arranged in the two supports, and the connecting rod can move forward and backward along the supports.

[0007] Furthermore, a semicircular hole is provided on one of the supports to prevent the connecting rod from axially rotating.

[0008] In order to facilitate the adjustment of the push block position to adapt to different types of electromagnetic switches and ensure that the button is ready to be pushed, the left and right sides of the movable seat are respectively provided with sliding grooves parallel to the connecting rod. The push block is arranged in the sliding groove and can slide back and forth along the sliding groove. The outer side surface of the push block has a protrusion extending out of the sliding groove, and the protrusion corresponds to the button of the electromagnetic switch.

[0009] Furthermore, in order to drive the push block, the adjusting screw passes through the movable seat from top to bottom, the middle part of the adjusting screw has a first tooth groove, the inner side of the push block has a second tooth groove, the first tooth groove is meshed with the second tooth groove, and rotating the adjusting screw can drive the push block to slide back and forth along the slide groove. The use of a rack and an adjusting screw with straight lines can make the torque adjustment more accurate and convenient.

[0010] In order to prevent the connecting rod from moving relative to the moving seat, the connecting rod passes through the front and rear ends of the moving seat, and a locking screw for locking the connecting rod is provided at the bottom end of the moving seat.

[0011] The beneficial effects of the present invention are as follows: the linear displacement over-torque protection component is directly connected to the worm, which is the same as the direction of the worm movement. Compared with the original side connection, the overall structure is greatly simplified, the reaction to the worm movement is more sensitive, the precision is higher, the overload protection for the electric actuator is better, and it is easy to install and maintain, the production cost is lower, and it has the value of promotion and use. Description of the drawings:

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the linear displacement over-torque protection component of the present invention;

[0013] Figure 2 It is a partial cross-sectional view of the linear displacement over-torque protection component of the present invention;

[0014] Figure 3 is a side view of the mounting base of the present invention;

[0015] Figure 4 is a cross-sectional view of the mobile seat of the present invention;

[0016] Figure 5 It is a structural schematic diagram of the push block of the present invention;

[0017] Figure 6 It is a structural schematic diagram of the adjusting screw of the present invention. Specific implementation method:

[0018] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0019] like Figure 1 , Figure 2 A linear displacement over-torque protection component shown includes a mounting seat 1, an electromagnetic switch 2, a connecting rod 4, a moving seat 5, a push block 6 and an adjusting screw 7. The electromagnetic switches 2 are a pair, symmetrically arranged on the left and right sides of the mounting seat 1, the connecting rod 4 is slidably connected to the mounting seat 1 through the front support 8 and the rear support 9, and is correspondingly arranged between the two electromagnetic switches 2, the moving seat 5 is fixed in the middle of the connecting rod 4, and is relatively locked by the locking screw 10, the push block 6 is a pair, correspondingly arranged on both sides of the moving seat 5, and respectively corresponding to the button 3 of the electromagnetic switch 2, the adjusting screw 7 is arranged on the moving seat 5, and is tightened by a nut (the adjusting screw 7 and the nut are rotatable), and the adjusting screw 7 and the push block 6 are connected in a tooth groove manner.

[0020] Combination Figure 1 , Figure 3 The mounting seat shown is a rectangular hollow structure (U-shaped), with electromagnetic switches installed on the left and right crossbeams respectively, and a front support 8 and a rear support 9 installed on the front and rear crossbeams respectively, which are used to support the two ends of the connecting rod respectively. A non-circular hole (semi-circular hole) is provided on the front support 8, and a circular hole is provided on the rear support 9. In addition, two mounting holes 11 are provided for installing the linear displacement over-torque protection component. The connecting rod is guided by the two supports to achieve forward and backward movement.

[0021] like Figure 4 The movable seat 5 shown in the figure has a center hole 13 for the connecting rod to pass through at its center position, a threaded hole 14 for the locking screw to pass through and lock the connecting rod, through holes 12 are respectively provided on both sides of the center hole for installing adjusting screws, and rectangular slide grooves 15 that pass through the front and rear ends of the movable seat 5 are respectively provided on both sides of the movable seat 5, and an open groove 16 connected to the slide groove 15 is provided. The size of the open groove 16 is smaller than that of the slide groove 15, and the push block is restricted in the slide groove 15 and can only slide forward and backward but not left and right, while the protrusion on the push block extends out of the open groove 16.

[0022] like Figure 5 The push block 6 shown has a rectangular strip at one end, a second tooth groove 17 on the right side, and an arc-shaped protrusion 18 integrally formed at the left end. It should be noted that the two push blocks 6 are installed asymmetrically, and the protrusions 18 are respectively located at the front and rear ends.

[0023] like Figure 6 The adjusting screw 7 shown has a first tooth groove 19 meshing with the second tooth groove at its middle, and a notch 20 fixed relative to a nut at its bottom end.

[0024] When using, combine Figure 1-6 As shown, the power mechanism pushes the connecting rod 4, and under the guidance of the front support 8 and the rear support 9, the connecting rod 4 drives the entire moving seat 5 to move forward, then the raised portion 18 of the left push block 6 squeezes the electromagnetic switch button on the left, so that the left switch is closed, and the connecting rod 4 continues to move forward, the raised portion 18 of the left push block 6 disengages from the electromagnetic switch button on the left, and the raised portion 18 of the right push block 6 squeezes the electromagnetic switch button on the right, so that the right switch is closed, thereby opening and closing the switch; loosening the locking screw 10 can make the connecting rod 4 and the moving seat 5 move relative to each other, so as to perform a rough position adjustment, and after tightening the tightening screw 10, turn the adjusting screw 7 to make the two push blocks 6 move forward and backward along the moving seat 5, and perform a secondary precise adjustment, so as to ensure the accuracy of the switch.

[0025] In the description of the embodiments of the present invention, it should be noted that the orientations or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “top”, “bottom”, “side” and “end” are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "set", "provided with", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Finally, it should be noted that the above embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A linear displacement over-torque protection component, characterized in that: It includes a mounting seat, an electromagnetic switch, a connecting rod, a moving seat, a push block and an adjusting screw. The electromagnetic switches are a pair and are symmetrically arranged on both sides of the mounting seat. The connecting rod is slidably connected with the mounting seat and is correspondingly arranged between the two electromagnetic switches. The moving seat is fixed on the connecting rod. The push blocks are a pair and are correspondingly arranged on both sides of the moving seat and correspond to the buttons of the electromagnetic switch respectively. The adjusting screw is arranged on the moving seat and is connected with the push block. The adjusting screw can drive the push block to slide forward and backward along the moving seat. The movable seat has slide grooves parallel to the connecting rod on the left and right sides, the push block is arranged in the slide groove and can slide forward and backward along the slide groove, and the outer side of the push block has a protrusion extending out of the slide groove, and the protrusion corresponds to the button of the electromagnetic switch; The adjusting screw passes through the movable seat from top to bottom, the adjusting screw has a first tooth groove in the middle, the inner side of the push block has a second tooth groove, the first tooth groove is meshed with the second tooth groove, and rotating the adjusting screw can drive the push block to slide forward and backward along the slide groove; The mounting seat is rectangular, the electromagnetic switch is arranged at the left and right ends of the mounting seat, the front and rear ends of the mounting seat are respectively integrally formed with supports, the two ends of the connecting rod are respectively arranged in the two supports, the connecting rod can move forward and backward along the supports, and one of the supports is provided with a semicircular hole to prevent the connecting rod from axial rotation; The connecting rod passes through the front and rear ends of the moving seat, and a locking screw for locking the connecting rod is arranged at the bottom end of the moving seat.

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