JP7115725B2 - Stopping device for film winding and rewinding control device - Google Patents

Description

The present invention relates to a stop device for a film winding/rewinding control device.

According to Japanese Patent Application Laid-Open No. 2016-086691 proposed by the present applicant, in a film winding/rewinding control device for opening and closing the film in the valley portion of the house, the opening adjustment portion casing includes a rotating shaft, a slider (dog), It consists of two guide rods, two screw shafts, and first and second limit switches. As the rotary shaft rotates, the slider moves horizontally. When stopped at the first or second limit switch, the film is normally opened to the desired opening (valley opening). In the conventional configuration in which a screw is formed over the entire length of the rotary shaft, failures may occur in the following cases. For example, if there is a wiring mistake or if the control device is installed in the valley with the left and right reversed, the rotary shaft will rotate in the opposite direction, and the slider will move to a position where it will not move any further, locking it and applying a load to the rotary shaft. be done. Failures caused by this load include, for example, breakage of rotating shafts, screws, and the like.

This time, in order to prevent such damage, for example, a portion (end portion) of the rotating shaft is screwless (for example, this is an example of stopping means for stopping movement of the slider). By adopting this structure, for example, even under the circumstances such as wiring errors as described above, the slider rotates idly at the screwless portion (round shaft), and no load is applied to the rotary shaft, thus avoiding damage. Alternatively, installation of a safety switch becomes unnecessary.

When examining the prior art based on this improvement proposal, for example, we searched the prior art with keywords such as limit switches and dogs (sliders) related to ventilation of houses, etc., but we found that this type of slider has a part where it idles. , I could not find any prior art documents with a configuration in which the rotating shaft is provided with a round shaft.

In view of the above, Japanese Patent Application Laid-Open No. 2003-115236 can be cited as a document related to a rotating shaft provided with a round shaft in the field outside the house. In [0007] of the specification, a non-threaded portion formed by extending a rotary screw shaft is formed on the tip side of the gear body, and the non-threaded portion rotates and rotates with respect to the bearing. There is a description that it is provided freely in and out. However, I can't find any explanation about its purpose and configuration.
JP 2016-086691 A JP-A-2003-115236

In the conventional film winding/rewinding control device, in which a screw is formed along the entire length of the rotary shaft, failures may occur in the following cases. That is, if there is a wiring mistake or if the control device is installed upside down in the trough, the rotating shaft will rotate in the opposite direction, and the slider will move to a position where it will not move any further, locking it and applying a load to the rotating shaft. Conceivable. Failures caused by this load include breakage of rotating shafts, screws, and the like. Improvements regarding breakage of the rotating shaft, screws, etc. were not sufficient.

Claims 1 to 4 are proposed in order to achieve the object of the present invention and to solve conventional problems.

According to the first aspect of the invention, there are provided a trough portion or a side portion of a house, such as a trough portion or the like, which is provided on a casing for adjusting an opening, a driven-side driven body provided on the rotating shaft, and a driven-side driven body. A rotating body on the driving side that engages with the rotating body, a drive shaft provided with the rotating body on the driving side, a slider that moves (forwards and backwards) by meshing with the screw of the rotating shaft, and a guide rod for guiding the slider. , and a forward/reverse limit switch against which the slider collides,
A film winding/rewinding device is characterized in that the stopping device has a stopping means formed on at least one end of the rotating shaft, and when the slider reaches the stopping means, the movement of the slider is restricted. It is the stopping device of the control device.

Therefore, according to claim 1, if there is a wiring mistake or if the control device is installed in the trough with the left and right reversed, the rotary shaft rotates in the opposite direction, and the slider moves to a position where it cannot move any further, and is locked, causing a load on the rotary shaft. There is a practical benefit in that it is possible to naturally avoid cases where a load is applied, and to avoid failures caused by this load, such as breakage of rotating shafts, screws, and the like.

In the invention according to claim 2, the stopping means is a shaft portion provided at least at one end of the rotating shaft and having no screw,
A stop device for a film winding/rewinding control device is characterized in that movement of the slider is restricted when the slider reaches the shaft.

Therefore, in claim 2, there is a practical advantage that the features and effects of claim 1 can be achieved, and in relation to the achievement of this object, it is possible to provide a stop means with an optimal structure and an improved rotating shaft.

According to a third aspect of the present invention, there is provided a stop device for a film winding/rewinding control device, wherein the shaft portion is a round shaft having an outer diameter smaller than at least the outer diameter of the screw.

Therefore, claim 3 has the practical benefit of being able to achieve the features and effects of claim 2, and of providing a shaft portion with an optimum structure and disclosing the structure of the support portion of the slider in relation to achieving this object.

According to a fourth aspect of the present invention, there is provided a stopping device for a film winding/rewinding control device, wherein an axial slit is provided on the outer peripheral surface of the round shaft.

Therefore, in claim 4, there is a practical advantage that the features and effects of claim 3 can be achieved, and in relation to this purpose, provision of a round shaft with an optimal structure and an improved round shaft can be achieved.

A reduced-scale bird's-eye view showing the trough (valley)/side part (side surface), the end surface/side surface, and the winding/rewinding control device (assumed to be a control device) of the house. Scaled front view of the control device for the valley and the vertical rod installed in the house Front view of main part of Figure 2-1 Scaled front view of the control device for the side part and the vertical rod installed in the house Front view of main part of Figure 3-1 Cross-sectional view of the control device as viewed from the side, partly cut or omitted Cross-sectional view of the control device on the left in plan view Cross-sectional view of the main part of Fig. 5-1 viewed from the side A side view showing an example of a rotating shaft and its shaft part The side view which showed another example of a rotating shaft and its shaft part Cross-sectional view of the control device on the right side viewed from above Cross-sectional view of the main part of Fig. 6-1 viewed from the side A side view showing an example of a rotating shaft and its shaft part The side view which showed another example of a rotating shaft and its shaft part In the conventional structure, when a rotating shaft with a screw is provided through the wall of the opening adjustment part casing such as a valley, and a nut is provided near the center of the rotating shaft, the damaged rotating shaft; Enlarged schematic diagram of an example of a nut (stopper) on the rotating shaft on the damaged side

A preferred embodiment of the present invention will be described below.

In FIGS. 1, 2-1, 2-2, and 4 to 6-4, in the valley A2 of the house A, the control device 1 (the left and right control units 1a and 1b) is erected. is provided. The outer shell of the control device 1 includes a motor casing 100, a speed reduction casing 101 adjacent to the motor casing 100, front sides 100b and 101c of the motor casing 100 and the speed reduction casing 101 (end surface A1 of house A in FIG. 1). 102 (refers to a housing of the adjusting portion for regulating/controlling the opening position of the valley/side portion) provided in the mounting portion). However, the opening adjusting portion casing 102 such as the trough portion is provided with a direction changing portion casing chamber 102a which is divided and formed.

On the lower side 101a of the deceleration casing 101, a vertical rod support portion 3 is formed to which a telescopic vertical rod 2 (supporting member) is attached.

The linkage between the motor casing 100, the deceleration casing 101, and the trough opening adjustment casing 102 and the components housed individually will be described below. It protrudes from the lower side 100a of 100 and reaches the rear side 101b (inside) of the reduction casing 101. As shown in FIG. A helical gear 12 meshing with the helical gear 11a of the output shaft 11, a vertical shaft 13 pivotally supporting the helical gear 12, and a vertical shaft A pair of bearings 15, 15 for supporting 13 are provided. A worm 13a is provided at the central portion (which is an example) of the vertical shaft 13 . Further, on the front side 101c (inside) of the reduction casing 101, a worm wheel 16 (vertical shaft) that meshes with the worm 13a of the vertical shaft 13, and a winding and rewinding drive that supports the worm wheel 16. A shaft 17 (both ends 17a and 17b of the drive shaft 17 for winding and rewinding protrude from the left and right walls 101-1 and 101-2 of the reduction casing 101), and the driving shaft 17 for winding and rewinding. Mounting bearings 18, 18 are provided. One end 17a of the winding and rewinding drive shaft 17 has a support portion 17c for supporting the winding and rewinding drive shaft 17, and the other end 17b has a second 1 A bevel gear 20 (to be described later) is fixed.

Therefore, the rotation of the output shaft 11 is decelerated and transmitted as follows (transmission device). Rotation is transmitted by the transmission device through the output shaft 11/helical gear 11a→helical gear 12→vertical shaft 13/worm 13a→worm wheel 16→drive shaft 17 for winding and rewinding.

The shapes of the helical gear 11a, the helical gear 12, the worm 13a, and the worm wheel 16 are not limited to helical gears, worms, and worm wheels, and other shapes such as spur gears. It is also a mechanism that can be changed to a gear of

An end portion 17b of a drive shaft 17 for winding and rewinding faces a direction changing portion casing chamber 102a (in other words, an opening adjustment portion casing 102 such as a valley portion) defined in the opening adjustment portion casing 102 such as a valley portion. A driving-side first bevel gear 20 (an example of a driving-side rotating body, and other gears, a driving mechanism, etc. may also be used) provided at the end portion 17b. In the direction changing part casing chamber 102a, there is a driven side second bevel gear 21 (rotated body on the driven side) that meshes with the first bevel gear 20 on the driving side (this is an example of locking, and other linking mechanisms are also possible). and a rotating shaft 22 that supports the second bevel gear 21 and is supported in the opening adjusting portion casing 102 such as the valley or supported on the wall. is provided. Therefore, the rotation of the drive shaft 17 for winding and rewinding is changed in direction (in the orthogonal direction, that is, the direction X of the output shaft 11 of the motor 10 and the opposite direction Y) as follows. be transmitted (means of transmission); Rotation transmission by the transmission means is the winding and rewinding drive shaft 17→first bevel gear 20→second bevel gear 21→rotation shaft 22. As shown in FIG.

The trough opening adjuster casing 102 includes the rotary shaft 22, a slider 23 (dock) that moves along the rotary shaft 22, and a guide rod 2300 that guides the slider 23 and is positioned above the rotary shaft 22. and two guide rods 24 and 25 which are provided side by side with this rotating shaft 22 and are respectively supported on the opening adjustment part casing 102 such as the valley, Two screw shafts 26 and 27 mounted on the opening adjustment casing 102, and first and second limit switches 28 and 29 (first and second limit switches) provided on the two screw shafts 26 and 27, respectively. switch) and the ends of the screw shafts 26 and 27 for adjusting the first and second limit switches 28 and 29 (the ends protruding to the lower side 102b of the opening adjustment unit casing 102 such as the valley), and Knobs 30 and 31 located outside the opening adjustment portion casing 102 such as valley portions are provided. Therefore, rotation of the rotating shaft 22 causes the slider 23 to move vertically in FIG. 5-1. With this movement, the slider 23 abuts against the first and second limit switches 28 and 29, and moves the film B to the open position (opening of the trough A2) or the base position (closing of the trough A2). , respectively. Further, the positions of the first and second limit switches 28 and 29 (in other words, movement of the slider 23, change in movement distance, etc.) can be changed by operating the knobs 30 and 31 to rotate the screw shafts 26 and 27. adjust.

The point of the present invention is that, in the view shown in FIG. 2-1, a round shaft 2200 (unthreaded portion) is formed on at least one end 22a of the rotating shaft 22 of the control unit 1b on the right side. do. A round shaft 2201 (unthreaded portion) is also formed on the other end portion 22b, if necessary. As described above, if the wiring of the motor 10 is incorrect, or if the control device 1 (the control units 1a and 1b attached to the left and right sides) are installed in the valley A2 by mistake (right and left reversed), the rotary shaft 22 rotates in the opposite direction, causing the slider to rotate. 23 may move to a position where it cannot move any further and be locked, and a load may be applied to the rotary shaft 22. Failures caused by this load include breakage of the rotary shaft 22, screw 2202, etc. (an example is shown in FIG. 7). The round shafts 2200 and 2201 function to prevent the above failure by restricting the movement of the slider 23 when the slider 23 reaches the round shaft 2200 or 2201 .

2-1, a round shaft 2201 (unthreaded portion) is formed at least at the other end 22b of the rotating shaft 22 of the left control device 1a. A round shaft 2200 (unthreaded portion) is also formed on the one end portion 22a, if necessary. As described above, if there is a mistake in the wiring of the motor 10, or if the control device 1 (the control unit 1b attached to the right and left and the control unit 1a) is installed in the valley A2 by mistake (right and left reversed), the rotating shaft 22 rotates in the reverse direction, causing the slider to rotate. 23 may move to a position where it will not move any further and be locked, and a load may be applied to the rotary shaft 22, for example. A failure caused by this load causes damage to the rotating shaft 22, the screw 2202, etc., as shown in FIG. The round shafts 2200 and 2201 function to prevent the above failure by restricting the movement of the slider 23 when the slider 23 reaches the round shaft 2200 or 2201 .

In the left and right control units 1a and 1b, the reference numerals of the rotating shaft 22, the round shaft 2200a, the round shaft 2200b, etc. are common.

This control device 1 (targeting the control unit 1b located on the right side as viewed) has a vertical rod 2 erected swingably on the end face A1 of the house A as shown in FIG. By attaching it to the vertical rod support portion 3 provided on the side 101a, it is arranged in the valley portion A2. When a command is given to the control device 1 by an appropriate means, the motor 10 rotates, and the devices provided in the speed reduction casing 101 described above, for example, the output shaft 11/helical gear 11a→helical gear 12→vertical shaft 13 The worm 13a→worm wheel 16→transmitting to the winding/rewinding drive shaft 17, the joint fitting 33 connected to the winding/rewinding drive shaft 17 and/or the winding/rewinding shaft (not shown) In this direction of rotation, the film B in the trough A2 is wound up as indicated by the clockwise arrow 1 in FIG. position of the imaginary line). During this operation, the first bevel gear 20 and the second bevel gear 21 in the direction changing section casing chamber 102a are meshed to change the transmission direction and transmit it to the rotation shaft 22 of the opening adjusting section casing 102 such as the valley ( The rotation of the rotating shaft 22 is by the aforementioned winding/rewinding drive shaft 17→first bevel gear 20→second bevel gear 21→rotating shaft 22). This rotation of the rotating shaft 22 causes the slider 23 to move, and when it collides with the first limit switch 28, it stops at the open end. It should be noted that the size of the opening can be adjusted as described above. The control device 1a located on the left side also conforms to the above-described control device 1b located on the right side.

Closing of the opening is the reverse of the above-mentioned rotation and operation, and rewinding as indicated by the counterclockwise arrow 2 closes the opening. That is, it comes into close contact with the gutter (not shown) of the trough A2 (the position indicated by the solid line in FIG. 1).

In addition, a side portion A3 (side side) of the house A in FIGS. 3-1 and 3-2 is provided with a horizontal control device 1 (left and right control units 1a and 1b). The outer shell of the control device 1 includes a motor casing 100, a reduction casing 101 adjacent to the motor casing 100, and opening adjustment portions such as valleys provided on the front sides 100b and 101c of the motor casing 100 and the reduction casing 101. A casing 102 is provided. However, the opening adjusting portion casing 102 such as the trough portion is provided with a direction changing portion casing chamber 102a which is divided and formed. The structure of this control device 1 is the same as that of the control device 1 attached to the valley A2 of the house A shown in FIGS. 1, 2-1 and 2-2. Reference numeral 32 in the figure denotes a side film take-up lever which is connected to a drive shaft 17 for take-up and rewind.

In the present invention, the viewing window 34 is provided on the front side in a state where it is arranged on the end surface A1. Thereby, for example, it is optimal for visual recognition and convenience can be ensured.

Each of the structures, features, etc., described above is an explanation of a preferred example of the present invention. Therefore, the present invention is not limited to the examples described above, and structures that partially change the configuration within the spirit of the invention, structures that achieve the same features and effects, etc. are within the scope of the present invention. be.

1 Control Device 1a Control Unit 1b Control Unit 100 Motor Casing 100a Lower Side 100b Front Side 101 Reduction Casing 101a Lower Side 101b Rear Side 101c Front Side 101-1 Right Wall 101-2 Left Wall 102 Opening Adjustment Part Casing 102a Direction Converter casing chamber 102b Lower side 102c Front side 2 Vertical rod 3 Vertical rod support 10 Motor 11 Output shaft 11a Helical gear 12 Helical gear 13 Vertical shaft 13a Worm 15 Bearing 16 Worm wheel 17 Drive shaft 17a End 17b End 17c Support 18 Bearing 20 First bevel gear 21 Second bevel gear 22 Rotating shaft 22a End 22b End 2200 Round shaft 2201 Round shaft 2202 Screw 23 Slider 2300 Guide rod 24 Guide rod 25 Guide rod 26 Screw shaft 27 Screw Shaft 28 First limit switch 29 Second limit switch 30 Knob 31 Knob 32 Winding rod 33 Joint fitting 34 Peephole A House A1 End face A2 Valley A3 Side part B Film

Claims (4)

A rotating shaft provided on the casing, such as a trough portion or a trough portion provided on the side portion of the housing, a driven-side driven body provided on the rotating shaft, and a locked driven-side driven body. a rotating body on the driving side, a driving shaft provided with the rotating body on the driving side, a slider that meshes with the screw of the rotating shaft and advances and retreats, a guide rod for guiding the slider, and the slider that collides. In the stopping device of the film winding/rewinding control device, comprising:
The stopping device is characterized in that a stopping means is formed on at least one end of the rotary shaft, and movement of the slider is restricted when the slider reaches the stopping means. A stop device for a film winding and rewinding control device. The stopping means is a shaft portion provided at least at one end of the rotating shaft and having no screw,
2. A stopping device for a film winding/rewinding control device according to claim 1, wherein movement of said slider is restricted when said slider reaches said shaft portion. 3. A stopping device for a film winding/rewinding control device according to claim 2, wherein said shaft portion is a round shaft having an outer diameter smaller than at least an outer diameter of said screw. 4. A stopping device for a film winding/rewinding control device according to claim 3, wherein an axial slit is provided on the outer peripheral surface of said round shaft.

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