JPS63295130A - Screw turning device - Google Patents

Abstract

PURPOSE:To easily perform mounting and removal of a rotary member, by providing the screw rotary member, in which its one end engages with a rotary arm member in a cylindrical housing arranged in the bottom face of a mounting base and the other end protrudes from the housing, and engaging a stopper member, for supporting and positioning the rotary member, with the bottom end part of the housing member. CONSTITUTION:A cylindrical housing member 35 is mounted to a sleeve member 42 which is inserted being fitted to the through hole of a mounting base 33 protruding to the bottom. A link part 39. secured to a universal joint part 40 of a rotary arm, is inserted into the sleeve member 42, and one end of a screw rotary member 36 is engaged with a point end 39a of the link part 39' The screw rotating member 36 is inserted into the housing member 35 through a spring 43 while stopped to the housing member 35 by a stopper member 37, and the screw rotating member 36 enables its position to be adjusted by turning the stopper member 37 and by the spring 43. Accordingly, the screw rotating member 36, which is easily mounted and removed by removing the stopper member 37, permits the replacement work to be easily attained.

Description

[Detailed description of the invention] The present invention will be explained in the following order.

A. Field of industrial application B. Overview of the invention C. Prior art D. Problem to be solved by the invention E. Means for solving the problem F. Effect G. Example G-1 configuration (Figures 1 to 3) G-2 Example of use condition (Figure 4) H Effect of the invention A Industrial field of application The present invention is used to rotate a screw, such as a screw for assembling or adjusting an electronic device, while attached to a fixed part. This invention relates to a screw turning device used for various purposes.

B. Summary of the Invention The present invention provides a screw turning device that is attached to a fixed part and rotates a screw, such as a screw for assembling or adjusting an electronic device, which is detachably attached to the fixed part. Within the cylindrical housing member, an arm member that transmits torque from the rotation drive unit and a screw rotation member having a screw engagement portion are connected, and a positioning member that engages with the cylindrical housing member rotates the screw. The engaging portion side of the member with the arm member is elastically supported within the cylindrical housing member, the screw rotating member is positionally regulated in such a state that the screw engaging portion protrudes outside from the end of the cylindrical housing member, and the arm member By transmitting torque from the rotary drive unit to the screw rotating member and causing the screw rotating member to rotate, the overall structure can be made smaller, and the screw rotating member can be easily attached/detached or replaced. In addition, it is possible to make the screw rotating member take an appropriate position with extremely easy operation, and as a result, it is possible to properly transmit torque to the screw to be rotated. It is.

C. Prior art When performing automatic rotation control for assembly screws or adjustment screws, etc. of electronic equipment, a screw rotation device attached to a fixed part is used to control the assembly screws, adjustment screws, etc. to be rotated. is engaged with a screw rotation member provided in a screw rotation device, and then the screw rotation device is operated to rotate an assembly screw, an adjustment screw, or the like. As a screw turning device used in such a case, for example, the one shown in FIG. 5 (later) has been proposed.

The device shown in FIG. 5 includes a motor 12 fixed on a first mounting base 11, an arm member 13 whose one end is connected to a rotating shaft 12a of the motor 12, and an arm member 1
3 and the second mounting base 1
4 and a screw rotating member 15 supported by the screw rotary member 15. The arm member 13 is connected to the rotation shaft 12 of the motor 12.
universal joint portion 16.a coupled to universal joint portion 16.a. Universal joint portion 17 coupled to screw rotating member 15 and these universal joint portions 16
and an arm main body 18 that connects the universal joint 17 to the arm main body 18, and the arm main body 18 is equipped with an expansion and contraction mechanism.

As the cross-sectional structure of the screw rotating member 15 is shown in FIG. 6, a locking member 20 is attached to one end side to form a connecting portion to the arm member 13, and a connecting end 15a of the connecting portion is connected to the arm member 13. The locking member 20 is fitted into the recess 17a formed in the universal joint 17 of the member 13, so that the end surface of the locking member 20 comes into contact with the end surface of the universal joint 17, and the position of the coupling end 15a is adjusted by the set screw 22. Fixed. Further, on the other end side of the screw rotating member 15, at the tip thereof,
A screw engaging portion 15b that engages with the screw to be rotated is provided.

The screw rotating member 15 is inserted through a sleeve member 23 that is fitted into a through hole 14a provided in the second mounting base 14, and a locking member 20 attached to one end of the sleeve member 23 is inserted into the sleeve member 23. 23. Thereby, the screw rotating member 15 is connected to the arm member 13 and supported by the second mounting base 14, and the other end side of the screw rotating member 15 is located below the second mounting base 14. It will protrude for a relatively long time.

Then, the torque from the motor I2 is transmitted to the screw rotating member 15 through the arm member 13, and the screw rotating member 15
is forced to rotate.

Based on such a configuration, when automatic rotation control is performed on a screw such as an adjustment screw of an electronic device, for example, when the operation of the motor 12 is stopped, the screw such as the adjustment screw is The screw engaging portion 15b is moved toward the screw rotating member 15 protruding downward from the mounting base 14 of No. 2, and its head is provided at the tip of the screw rotating member 15.
is engaged with. Thereafter, the motor 12 is activated, and the screw rotating member 15 rotates a screw such as an adjustment screw. Note that the axial displacement of the screw rotating member 15 that may occur in such a case is due to the displacement of the arm member 13.
This is done with expansion and contraction in the expansion and contraction mechanism provided in the.

D Problems to be Solved by the Invention However, in the screw rotating device as described above,
The screw rotating member 15 protrudes relatively long downward from the second mounting base 14, and its axial displacement is caused by the expansion and contraction in the expansion and contraction mechanism of the arm member 13. The position of the screw engaging portion 15b is likely to fluctuate, resulting in a disadvantage that the head of the screw to be rotated cannot be easily secured to the screw engaging portion 15b. In particular, when the size of the head of the screw to be rotated is relatively small, the engagement between the head of the screw to be rotated and the screw engaging portion 15b may not be achieved properly. , there is a possibility that torque cannot be reliably transmitted from the screw rotation member 15 to the screw to be rotated.

Further, a screw engaging portion 15 provided on the screw rotating member 15
In the case where the screw rotating member 15 needs to be replaced due to progressing wear of b, the screw rotating member 15 cannot be attached or detached from below the second mounting base 14, and the screw rotating member 15 cannot be attached or detached. In order to do this, the troublesome work of removing the screw rotating member 15 connected to the arm member 13 from the second mounting base 14 upward is required.

In view of these points, the present invention provides an arm member that transmits torque from a rotary drive section, and a screw that is connected to the arm member and attached to a fixed section, and that transmits torque from the rotary drive section through the arm member. and a rotating member,
It is configured to rotate the screw that is engaged with the screw rotating member, and the overall structure can be made compact, and the screw rotating member can be easily attached/detached or replaced. Moreover, the screw rotating member can be rotated with extremely easy operation. It is an object of the present invention to provide a screw turning device that can appropriately set the position of a member.

E. Means for Solving the Problems In order to achieve the above-mentioned object, the screw rotating device according to the present invention is fitted into a through hole provided in a mounting base, so that a part of the screw turning device is inserted into a through hole provided in a mounting base. A sleeve member that protrudes, one end of which is connected to a rotation drive unit disposed above the mounting base, and the other end of which is provided with a link portion that is inserted through the sleeve member and extends below the mounting base. , an arm member that transmits torque from the rotary drive section; and a screw rotation whose one end side is engaged with a link section provided on the arm member, so that the arm member transmits the torque from the rotary drive section and is rotated. In addition, a cylindrical housing member is provided, which is removably attached to the downwardly projecting portion of the mounting base of the sleeve member and extends downwardly from the mounting base, and is connected to one end side of the screw rotating member and the arm. The member is engaged with the link portion within the cylindrical housing member, and the other end side of the screw rotating member serves as a screw engaging portion that protrudes outside from the end of the cylindrical housing portion; A positioning member is provided which engages with the cylindrical housing member and allows the screw rotating member to be positioned at one end thereof by being elastically supported within the cylindrical housing member.

F action In the screw rotating device according to the present invention configured as described above, the inside of the cylindrical housing member attached to the sleeve member that is fitted into the through hole provided in the mounting base and protrudes downward from the mounting base. In this step, the arm member that transmits torque from the rotational drive unit and the screw rotation member are engaged, the torque from the rotation drive unit is transmitted to the screw rotation member through the arm member, the screw rotation member is rotated, and the screw rotation member is rotated. A screw engaged with a screw engaging portion provided on the rotating member is rotated. The screw rotating member is elastically supported at one end within the cylindrical housing member by a positioning member that engages with the cylindrical housing member, and thereby the other end, which is a screw engagement portion, is rotated from the cylindrical housing. It is assumed that the member protrudes outward from the end thereof, and its position is regulated.

Therefore, by adjusting the engagement state of the positioning member with respect to the cylindrical housing member, the position of the screw engagement part provided on the screw rotation member is properly set, and the position is stably maintained, and the screw The screw to be rotated can be easily and reliably secured to the engaging portion. Further, the screw rotating member is released from engagement with the arm member in the cylindrical housing member and can be removed by disengaging the positioning member from the cylindrical housing member; The arm member is adapted to be engaged within the cylindrical housing member. Therefore, when the threaded engaging portion provided on the threaded rotating member wears out and the threaded rotating member needs to be replaced, the threaded rotating member can be extremely easily attached and detached.

G Example G-1 configuration (Figures 1 to 3) FIG. 1 shows an example of a screw turning device according to the present invention.

In this example, a motor 32 as a rotary drive unit is fixed on a first mounting base 31 forming a plate-shaped fixed part, one end is connected to a rotating ring 32a of the motor 32, and the other end is connected to a rotating ring 32a of the motor 32. an arm member 34 that engages with the second mounting base 33 whose side forms a plate-shaped fixing portion; a cylindrical housing member 35 disposed on the lower surface side of the second mounting base 33;
A screw rotating member 36 is provided, one end of which engages with the arm member 34 within the cylindrical housing member 35, and the other end of which protrudes from the lower end of the cylindrical housing member 35. A locking member 37 that supports and positions the screw rotating member 36 is engaged with the lower end of the member 35 .

The arm member 34 includes a universal joint portion 38 provided with a coupling portion 38a to the rotating shaft 32a of the motor 32, a universal joint portion 40 to which a link portion 39 having a tip portion 39a that engages with the screw rotating member 36 is fixed, and , these universal joints 3
8 and the universal joint portion 40.
It is formed into a rod shape as a whole. Then, the coupling part 38a provided on the universal joint part 38 is coupled to the rotating shaft 32a of the motor 32, and the link part 39 fixed to the universal joint part 40 is connected to the vicinity of the second mounting base 33 and the second mounting base 33. As shown in FIG. 2, which is an enlarged view of the cross-sectional structure of the lower part of the mounting base 33 of No. 2,
The sleeve member 42 is inserted into a through hole 33 a provided in the second mounting base 33 and extends downward from the second mounting base 33 .

The sleeve member 42 includes a locking portion 42 a that is arranged on the upper surface of the second mounting base 33 and comes into contact with the universal joint portion 40 of the arm member 34 , and a locking portion 42 a that is disposed on the upper surface of the second mounting base 33 .
It has a threaded portion 42b protruding toward the lower surface side.

Then, as shown in FIG. 2, the cylindrical housing member 3
5 is attached by screwing its one end to the threaded portion 42b of the sleeve member 42 protruding from the lower surface side of the second mounting base 33, and therefore, the arm extending below the second mounting base 33 is attached. Link portion 39 provided on member 34
is accommodated within the cylindrical housing member 35. Inside the cylindrical housing member 35, a link portion 3 is provided on one end side.
The screw rotating member 36 is provided with an engaging portion 36a that engages with the tip portion 39a of the cylindrical housing member 35. . The screw rotating member 36 is accommodated in the cylindrical housing member 35 by a locking member 37 that is screwed onto the other end of the cylindrical housing member 35 and passes through the other end of the screw rotating member 36. This is achieved by supporting one end of the screw rotating member 36 within the cylindrical housing member 35.

The sleeve member 4 is disposed on the inner surface of the cylindrical housing member 35.
A link part 39 provided on the arm member 34 penetrates at a position below the part screwed into the threaded part 42b of No. 2, thereby regulating the position of the link part 39.
is provided.

Further, inside the cylindrical housing member 35,
A coil spring 43 and a spacer member 44 surrounding the link part 39 passing through the position regulating part 35a are arranged between the position regulating part 35a and the end surface of the engaging part 36a provided on the screw rotation member 36. There is.

The coil spring 43 is placed in the compressed state, whereby the elastic force of the coil spring 43 acts on the engagement portion 36a provided on the screw rotation member 36 via the spacer member 44, and the screw rotation member 36 is moved into the cylindrical state. The shaped housing member 35 is forced outwardly.

A screw engaging portion 36b is formed at the tip of the other end of the screw rotating member 36 that protrudes outward from the cylindrical housing member 35. The position of this screw engagement portion 36b is determined by a locking member 37 screwed onto the other end of the cylindrical housing member 35 through which the other end of the screw rotating member 36 passes.
It is assumed that undesirable displacement will not occur. Further, by adjusting the screwing position of the locking member 37 with respect to the other end of the cylindrical housing member 35, the other end of the screw rotating member 36 protrudes from the other end of the cylindrical housing member 35. The length is adjusted so that the screw rotating member 36
The position of the screw engaging portion 36b formed on the other end side is adjusted. That is, the locking member 37 forms a positioning member that supports, adjusts, and regulates the position of the screw rotating member 36.

Furthermore, the locking member 37 is released from the threaded state with the other end of the cylindrical housing member 35 and removed from the cylindrical housing member 35, so that the screw rotating member 36 is installed on the arm member 34. The link portion 39 is released from the state of engagement with the link portion 39, and is taken out of the cylindrical housing member 35 as a single unit.

G-2 Usage state example (Fig. 4) An example of the screw turning device according to the present invention having such a configuration is, for example, as shown in Fig. 4, when a pair thereof are used side by side. Ru. In the usage example shown in FIG. 4, rotation control is performed on two adjustment screws 50 that are very close to each other,
A pair of arm members 34 extend from the rotating shafts of the two motors 32, which are arranged at a predetermined interval according to their respective dimensions, on the mounting base 3I of the The universal joint portions 40 are bent and brought close to each other so as to engage with two sleeve members 42 that are attached to the second mounting base 33 with a small distance therebetween. On the lower surface side of the second mounting base 33, a pair of cylindrical housing members 35 screwed to the two sleeve members 42 are arranged in parallel with a small interval, and the respective cylindrical housing members 35 are arranged in parallel with a small interval. A screw rotating member 36 projects from the housing member 35 through the locking member 37, and a screw engaging portion 36b formed on the screw rotating member 36 is located at a position corresponding to the head 50a of the adjusting screw 50. It is made to be placed.

Based on such a configuration, when controlling the rotation of the adjustment screw 50, each of the two adjustment screws 50 is rotated to the corresponding screw rotation member 36 while the operation of each motor 32 is stopped. The head 50
a is engaged with a screw engaging portion 36b formed on the screw rotating member 36. At this time, since the screw rotating member 36 is biased by the coil spring 43 disposed inside each cylindrical housing member 35, the screw engaging portion 36b is applied with a predetermined pressing force to the head of the adjusting screw 50. 50a. Then, each motor 32 is operated, and its torque is transmitted to the screw rotation member 36 through the arm member 34, and each adjustment screw 50 is rotated.

Effects of the Invention H As is clear from the above explanation, according to the screw rotation device according to the present invention, the arm member that transmits torque from the rotary drive unit and the screw are connected within the cylindrical housing member attached to the mounting base. When the screw rotating member is engaged with the rotating member, the screw engaging portion provided on the screw rotating member can be rotated. One end side is elastically supported within the cylindrical housing member, and the other end side on which the screw engaging portion is formed protrudes outside from the end of the cylindrical housing member, so that its position is regulated. The screw can be rotated by the screw engaging portion, and at that time, the position of the screw engaging portion provided on the screw rotating member can be adjusted by adjusting the engagement state of the positioning member with respect to the cylindrical housing member. can be properly set and its position can be stably maintained, and therefore the screw to be rotated can be easily and reliably secured to the screw engaging portion. Furthermore, by releasing the engagement state of the positioning member with respect to the cylindrical housing member, the screw rotating member is released from the engagement with the arm member in the cylindrical housing member and taken out; It can be engaged with the arm member within the member, and therefore, when the screw rotation member needs to be replaced, the screw rotation member can be attached and detached extremely easily.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an example of a screw rotation device according to the present invention, FIG. 2 is a side view showing an arm member in the example shown in FIG. 1, and FIG. 3 is a side view showing the example shown in FIG. 1. FIG. 4 is a perspective view showing an example of a screw turning device according to the present invention in use, FIG. 5 is a side view showing a conventional screw turning device, and FIG. 6 is a partial sectional view of FIG. FIG. 3 is a partial cross-sectional view of the screw rotation device shown. In the figure, 31 is a first mounting base, 32 is a motor, 33 is a second mounting base, 34 is an arm member, 35 is a cylindrical housing member, 36 is a screw rotating member, 37 is a locking member, 4
2 is a sleeve member.

Claims (1)

[Scope of Claims] A sleeve member that is fitted into a through hole provided in a mounting base so that a portion of the sleeve member projects below the mounting base, and one end of the sleeve member is disposed above the mounting base. an arm member that is connected to the rotary drive section and has a link section on the other end side that is inserted through the sleeve member and extends below the mounting base to transmit torque from the rotation drive section; A cylindrical housing member that is removably attached to a downwardly projecting portion of the mounting base and extends downwardly of the mounting base, and one end thereof is engaged with a link portion provided on the arm member within the cylindrical housing member. The housings are fitted together, and the other end thereof serves as a threaded engagement part that protrudes outward from the end of the cylindrical housing part, and the arm member transmits torque from the rotary drive part to rotate the housing. a positioning member that engages with the cylindrical housing member so that one end of the screw rotary member is elastically supported within the cylindrical housing member to restrict its position; A screw rotating device comprising: