CN209067644U - A kind of manual switch axis - Google Patents

Abstract

The utility model discloses a manual dial shaft, which is divided into a first shaft and a second shaft, and the dial shaft is provided with an axial idling stroke between the first shaft and the second shaft; the first shaft and the second shaft A pair of matching and compatible convex columns and column grooves are arranged opposite the shafts, and a linkage paddle is arranged between the two shafts. In the expansion slot, the width of the linkage paddle is larger than the diameter of the convex column and smaller than the radial wall spacing of the section where the expansion slot is located; the first shaft and the second shaft are inserted and axially positioned, and the diameter is in the section where the expansion slot is located. Toward interaction, coaxial linkage at the beginning and both ends of the expansion slot. The application of the manual dial shaft of the utility model avoids the high driving torque caused by single shaft curing, and greatly improves the operability of the manual drive by setting the idling stroke; through the low-cost structural optimization, it is easy to modularize and replace for maintenance.

Description

A manual dial shaft

technical field

The utility model relates to a mechanical operating mechanism, in particular to a manual rotating shaft structure endowed with an idling stroke.

Background technique

At present, most of the application of imported finished spring operating mechanisms on the market is not satisfactory. For example, when the motor is locked in a power-off state, when the load switch is manually turned off, it is subject to the associated traction of the motor output shaft to the related connecting components, which requires a huge torque, and even sometimes cannot complete the operation.

Utility model content

The purpose of the utility model is to provide a manual dialing shaft, which solves the problem of inconvenient operation caused by excessive initial driving torque of the manual rotating shaft.

In order to achieve the above purpose, the technical solution adopted by the present utility model is: a manual dial shaft, which is a manually driven main shaft component and is positioned on the side plate through bearings, characterized in that: the dial shaft is segmented It is set as a first shaft and a second shaft, wherein the first shaft passes through the side plate and is connected with the manual operation lever, the second shaft is located on the back side of the side plate and is connected to the driving object, and the dial shaft is in the first shaft. An axial idling stroke is provided between the shaft and the second shaft.

Preferably, the first shaft and the second shaft are oppositely provided with a pair of matching and compatible convex columns and column grooves, and a linkage paddle is arranged between the two shafts, wherein the convex column is provided with a radial insertion through the shaft. The column groove is provided with an expansion groove with an increased radius, and the width of the linkage paddle is larger than the diameter of the convex column and smaller than the radial wall spacing of the section where the expansion groove is located; the first shaft and the second shaft are inserted into each other. Axial positioning, radial interaction in the section where the expansion slot is located, and coaxial linkage at the beginning and both ends of the expansion slot.

Further preferably, the first shaft and the second shaft are provided with an oil-closing sheath at the joint.

Further preferably, the span range of the expansion groove on the radial section is 60°.

Preferably, a positioning card with a gap is sleeved on the outer side of the side plate, the positioning card and the dial shaft rotate coaxially, and the gap is controlled by an external lever pin to switch the rotation of the dial shaft.

Preferably, the outer end of the first shaft is provided with a regular polygonal boss with more than three edges, and the regular polygonal boss is matched with a butt-jointed manual operating lever.

Preferably, the outer end of the second shaft is provided with an edge-missing boss, and the edge-missing boss is matched with a transmission rod that is connected to the driving object.

After the technical solution of the utility model is applied, the remarkable effects are as follows: the manual dial shaft avoids the high driving torque caused by single-axis curing, and the operability of manual driving is greatly improved by setting the idling stroke; Easy modular replacement for maintenance.

Description of drawings

FIG. 1 is a schematic exploded view of the structure of the manual dialing shaft of the present invention.

FIG. 2 is a schematic diagram of a partial structure of an application example of the embodiment shown in FIG. 1 .

Detailed ways

The purpose and advantageous features of the present utility model will be shown in detail through the following preferred embodiments in conjunction with the non-limiting description of the accompanying drawings. These embodiments are only typical examples of the application of the technical solutions of the utility model, and equivalent replacements or other equivalent transformations are adopted. The formed embodiments all fall within the scope of protection of the present invention.

The designer of the present utility model innovatively proposes a brand-new design and superior performance of the manual dial shaft to solve the problem of layering by the single-axis curing of the traditional manual shaft, combined with years of experience in the design and manufacture of equipment in the field. The problem of excessive initial torque. As shown in Fig. 1 and Fig. 2, it is a schematic diagram of the structure explosion of the manual dial shaft and a schematic diagram of a partial structure of an application example.

The manual dial shaft is a manually driven main shaft component, and is positioned on the side plate through bearing attachment during practical application. From the perspective of structural improvement, the dial shaft is divided into a first shaft 1 and a second shaft 2, wherein the first shaft 1 passes through the side plate 4 and is externally connected to a manual operating lever (not shown), and the second shaft 2 It is located on the back side of the side plate 4 and is connected to the driving object. Here the driving object involves a variety of structures and does not belong to the characteristics of the technical protection requirements. It only needs to be understood that the axial rotation of the dial shaft can bring changes, so the description is omitted, and The dial shaft is provided with an axial idling stroke between the first shaft 1 and the second shaft 2 . As the origin of the segmented design and idling stroke of the dial shaft, the first shaft 1 and the second shaft 2 are provided with a pair of matching and compatible convex columns 21 and column grooves 11 opposite to each other, and a linkage dial 3 is provided between the two shafts. , wherein the protruding column 21 is provided with a radial slot 211 through the shaft, and the column groove 11 is provided with an expansion slot 111 with an increased radius. The span of the expansion slot on the radial cross-section is 60°. The width of 4 is larger than the diameter of the convex column 21 and smaller than the radial wall spacing of the section where the expansion groove 111 is located; the so-called wall spacing here refers to the sum of the diameter and radius of the column groove itself, that is, the linkage paddle can only be used after assembly. It moves within the range of the section where the expansion groove is located, and thus endows the dial shaft with a certain idling stroke characteristic. The first shaft 1 and the second shaft 2 are axially positioned after being inserted into each other, and are radially interacted in the section where the expansion slot is located, and coaxially linked at the beginning and two ends of the expansion slot. Therefore, no matter what position the second shaft is in, the first shaft can reach the initial movement space of ultra-low torque in a relatively relaxed state.

A further refinement of the above technical solution, wherein the first shaft 1 and the second shaft 2 are provided with an oil-closing sheath 5 at the joint. Due to the need for the two shafts to be movably connected to resist wear, during the assembly process of the dial shaft, lubricating oil needs to be smeared in it. set to achieve the desired effect.

The outer end of the first shaft 1 is provided with a regular polygonal boss 12 with more than three edges, and the regular polygonal boss is matched with the manual operating lever. The illustrated embodiment is a quadrilateral boss, but an equilateral triangular boss, a hexagonal boss, etc. are all applicable.

The outer end of the second shaft 2 is provided with an edge-cut boss 22 , and the edge-cut boss is matched with the transmission rod that is connected to the driving object. Accordingly, when the entire dial shaft rotates, the driving force can be transmitted to the transmission rod.

Besides, the dial shaft is sleeved with a notched positioning card 6 on the outside of the side plate 4 , and the positioning card 6 and the dial shaft (the first shaft) rotate coaxially. Therefore, when the external lever pin is controlled to be inserted into the gap, the dial shaft will be locked and cannot rotate, and when the external link lever pin is released from the gap, the dial shaft will be released and rotated freely. That is, based on the positioning card, the switching control of the movement and stop of the dial rotation shaft is realized.

To sum up, it can be seen from the detailed description of the above embodiments combined with the drawings that the significant effect after applying the technical solution of the present utility model is that the manual dial shaft avoids the high driving torque caused by single-axis curing, and the idling stroke is set to greatly improve the manual drive. Operability; low-cost structural optimization, easy modular replacement for maintenance.

Claims (7)

1. A manual dial shaft, which is a manually driven main shaft component and is positioned on the side plate through bearing attachment, characterized in that: the dial shaft is divided into a first shaft and a second shaft, wherein the first shaft A shaft passes through the side plate and is connected to the manual operating lever, the second shaft is located on the back side of the side plate and is connected to the driving object, and the dial shaft is provided with an axial idling stroke between the first shaft and the second shaft . 2 . The manual dial shaft according to claim 1 , wherein the first shaft and the second shaft are oppositely provided with a pair of matching and compatible convex columns and column grooves, and a linkage paddle is provided between the two shafts, 3 . The protruding post is provided with a radial slot through the shaft, the post slot is provided with an expansion slot with an increased radius, and the width of the linkage paddle is larger than the diameter of the protruding post and smaller than the diameter of the section where the expansion slot is located. The distance to the wall; the first shaft and the second shaft are inserted and axially positioned, and are radially interacted in the section where the expansion slot is located, and coaxially linked at the beginning and two ends of the expansion slot. 3 . The manual dial shaft according to claim 2 , wherein the first shaft and the second shaft are provided with an oil-closing sheath at the joint. 4 . 4 . The manual dial shaft according to claim 2 , wherein the span of the expansion groove on the radial section is 60°. 5 . 5. The manual dial shaft according to claim 1, wherein the dial shaft is sleeved with a positioning card with a gap on the outer side of the side plate, the positioning card and the dial shaft rotate coaxially, and the gap is controlled by The external lever pin switches the rotation behavior of the dial shaft. 6 . The manual dial shaft according to claim 1 , wherein the outer end of the first shaft is provided with a regular polygonal boss with more than three edges, and the regular polygonal boss is matched with the manual operating lever. 7 . 7 . The manual dial shaft according to claim 1 , wherein the outer end of the second shaft is provided with an edge-cut boss, and the edge-cut boss is matched with a transmission rod that is connected to the driving object. 8 .