JP5878567B2 - Support arm with brake function - Google Patents

Description

  The present invention relates to a mechanical arm, and more particularly to a support arm with a brake function.

  The mechanical support arm can complete an operation that cannot be completed with a great deal of human power. For example, high-strength, high-risk work such as transportation, welding, cutting or assembly and work that is not suitable by human power can be completed by mechanical support arms, so it is already widely used in industry today .

  For example, in the invention described in Patent Document 1, a flexible member is installed between the support arm and the elastic member. The flexible member can increase or decrease the resiliency of the elastic member by pulling or pushing the first pulley in the support arm actuation process. Therefore, the elastic support force of the elastic member is changed with the operation of the support arm. Further, in the invention described in Patent Document 2, an elastic member is installed between the upper and lower connecting rods, and one end of the elastic member is connected to a pulling rod so that the elastic member can be operated when the support arm is moved up and down. The provided elastic support force allows the adjustment to take place automatically.

  However, in the above two inventions, the support arm performs the operation of transporting the object by the vertical movement of the support arm itself. However, since the support arm lacks the positioning configuration, the object is transported to a predetermined position. After that, the support arm cannot perform the effect of being stably fixed to the object. Therefore, there is a possibility of affecting the subsequent work process.

US Patent Application Publication No. US2007 / 0001076 US Patent Application Publication No. 2011/0260017

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a support arm with a brake function that can enhance the convenience of operation by positioning it at a planned position according to actual needs. It is to provide.

  In order to achieve the above-described object, the support arm with a brake function of the present invention includes a fixed portion, an elastic device, a brake device, a support rod, and a flexible member. The elastic device has a mounting seat, an elastic member, and an end lid. The mounting seat is fixed to the fixing portion and has a first end wall, a second end wall facing the first end wall, and a mounting groove penetrating the first end wall and the second end wall. The elastic member is provided in the mounting groove of the mounting seat, and one end is in contact with the first end wall of the mounting seat. The end cover is movably provided in the mounting groove of the mounting seat and is in contact with the other end of the elastic member. The brake device has a central shaft, an outer lid, and a brake unit. The central shaft is fixed to the fixed portion, the outer lid is rotatably fitted to the central shaft, and the brake unit is provided in the outer lid to achieve a braking effect. The support rod is pivotally connected to the outer peripheral surface of the outer lid of the fixed portion and the brake device, and gives a support effect to the member. The flexible member is provided on the outer peripheral surface of the outer lid of the brake device. One end of the flexible member is fixed to the outer peripheral surface of the outer lid of the brake device, and the other end is fixed to the end lid of the elastic device through the mounting groove of the mounting seat in the elastic device.

  With the above-described configuration, in the process of transporting the object, the support rod gives support force by the end cover compressing the elastic member by pulling and moving the end cover. When the object is transported to a proper altitude position, the brake device gives a braking effect to the support bar by activating the brake device. Therefore, the positioning of the member is completed.

  The brake unit preferably has an electric box, a leaf spring, and an electric box plate. The electric box is fitted into the central shaft and fixed to the outer lid. The leaf spring is fixed to the central axis. The electric box plate is fitted into the central axis and is fixed to the surface of the leaf spring on the electric box side. When the electric box is in a disconnected state, the brake device is positioned at the braking position by sucking the electric box plate. When the electric box is energized, the brake is positioned in the release position by releasing the electric box plate.

  The support rod preferably has a first rod member, a second rod member parallel to the first rod member, and a third rod member between the first rod member and the second rod member. One end of the first saddle member is pivoted to the fixed portion by the first pivot, and the other end pivots to one end of the third saddle member by the second pivot. One end of the second saddle member is connected to the outer peripheral surface of the outer lid of the brake device, and the other end is pivotally connected to the other end of the third saddle member by the third pivot. In addition, the third hook member is provided with a switch base. By providing a control switch on the switch base, the electric box is turned off and energized.

  The mounting seat has a screw hole. The elastic device further includes a preload adjusting block and a preload adjusting screw. The preload adjusting block is fixed to the fixing portion and has a countersink. The preload adjusting screw is rotatably provided in the countersink in the original position, and is used to adjust the preload of the elastic member.

It is a perspective view which shows the support arm with a brake function by one Embodiment of this invention. It is a disassembled perspective view which shows the support arm with a brake function by one Embodiment of this invention. It is a disassembled perspective view which shows the brake device of the support arm with a brake function by one Embodiment of this invention. It is a side view which shows the support arm with a brake function by one Embodiment of this invention. It is sectional drawing which shows the state which the brake device of the support arm with a brake function by one Embodiment of this invention is located in a releasing position. It is sectional drawing which shows the state which the brake device of the support arm with a brake function by one Embodiment of this invention is located in a braking position. It is a side view which shows the state after the support bar of the support arm with a brake function by one Embodiment of this invention positioned.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the support arm 10 with a brake function according to the present invention includes a fixed portion 20, an elastic device 30, a brake device 40, a support bar 50, and two flexible members 60.

  The fixing part 20 has two opposing pivotal parts 22 and a mounting part 24. The mounting portion 24 extends laterally from the two pivotal portions 22.

  As shown in FIGS. 2, 4, and 7, the elastic device 30 includes an outer lid 31, a mounting seat 32, two elastic members 33, and two end lids 34. The outer lid 31 is fixed to the top surface of the placement unit 24 in the fixing unit 20. The mounting seat 32 is installed on the top surface of the mounting portion 24 in the fixed rack 20 and is hidden in the outer lid 31. The mounting seat 32 includes a first end wall 322, a second end wall 324 facing the first end wall 322, and a mounting groove 326 penetrating the two first end walls 322 and the second end wall 324. Further, the second end wall 324 of the mounting seat 32 further forms a screw hole 328 between the two mounting grooves 326. Each elastic member 33 is provided in the mounting groove 326 of the mounting seat 32, and one end thereof is in contact with the first end wall 322 of the mounting seat 32. Each end cover 34 is provided in the mounting groove 326 of the mounting seat 32 and is in contact with the other end of the elastic member 33. In addition, the elastic device 30 further includes a preload adjusting block 35 and a preload adjusting screw 36. The preload adjusting block 35 is fixed to the top surface of the mounting portion 24 in the fixed rack 20 and has a countersink 352. The preload adjusting screw 36 is rotatably provided at the original position in the countersunk hole 352 and is screwed into the screw hole 328 of the mounting seat 32. Therefore, when the preload adjusting screw 36 is rotated, the mounting seat 32 is driven, and the preload of the elastic member 33 is adjusted by the relative movement in the front-rear direction with respect to the fixed rack 20.

  What should be replenished is that the mounting grooves 326, the elastic members 33, and the end lids 34 in the mounting seat 32 may actually be at least one in number, but it is desirable that there are two or more in use. .

  As shown in FIGS. 2, 3, and 5, the brake device 40 includes a central shaft 41, an outer lid 42, and a brake unit 43. Both ends of the central shaft 41 are fixed to the bottom ends of the pivotal portions 22 in the fixed rack 20. The outer lid 42 is fitted into the central shaft 41 and pivots relative to the fixed rack 20 around the central shaft 41. The brake unit 43 has an electric box 44. The electric box 44 has a yoke 45, a coil 46, and a permanent magnet 47. The yoke 45 is fixed to the outer lid 42 and fitted into the central shaft 41. The coil 46 and the permanent magnet 47 are each provided in the yoke 45. In addition, the brake unit 43 further includes a leaf spring 48 and an electric box plate 49. The leaf spring 48 is fitted into the central shaft 41 and fixed. The electric box plate 49 is fitted into the central shaft 41 and is fixed to the surface of the leaf spring 48 on the electric box 44 side.

  As shown in FIGS. 2 and 4, the support bar 50 includes a first rod member 51, a second rod member 52 disposed in parallel with the first rod member, and the first rod member 51 and the second rod member 52. It has the 3rd collar member 53 in between. The rear end of the first flange member 51 is pivotally connected to the top end of the pivot portion 22 of the fixed rack 20 by the first pivot 54. The front end of the first saddle member 51 is pivotally connected to the top end of the third saddle member 53 by the second pivot 55. The rear end of the second saddle member 52 is connected to the outer peripheral surface of the outer lid 42 of the brake device 40, thereby rotating the outer lid 42 of the brake device 40 and the second saddle member 52 synchronously. The front end of the second hook member 52 is pivotally connected to the bottom end of the third hook member 53 by the third pivot 56. In addition, the top end of the third flange member 53 has an object fixing portion 532 that extends laterally outward. The object fixing portion 532 is covered with the switch base 57. A control switch 70 is provided on the top surface of the switch base 57. The control switch 70 is electrically connected to the coil 46 of the electric box 44 and is used to control the disconnection and energization of the coil 46.

  As shown in FIG. 2 and FIG. 4, the flexible member 60 takes a rope as an example in this embodiment. When assembling, the two flexible members 60 are provided on the outer peripheral surface of the outer lid 42 of the brake device 40. One end of each of the two flexible members 60 is fixed to the fixed block 62. The fixed block 62 is fixed to the outer peripheral surface of the outer lid 42 in the brake device 40, and the two flexible members 60 pass through driven wheels 64 that are fitted to the first pivot 54 at the other ends. Next, each of the mounting seats 32 passes through the mounting groove 326 and is fixed to the end lid 34.

  Before starting to carry the object, first, the coil 46 of the electric box 44 is energized by pressing the control switch 70. Under this circumstance, the reverse magnetic force generated by the coil 46 cancels out the mutual magnetic force of the permanent magnet 47 and the attractive force between the yoke 45 and the electric box plate 49 disappears. The brake device 40 at this time is in the release position P1, and as shown in FIG. 5, the support rod 50 is then pivoted to carry the object. In the carrying process, the flexible member 60 pulls the end lid 34 connected thereto by rotation of the outer lid 42 in the brake device 40. Next, the end cover 34 starts to compress the elastic member 33, and the elastic member 33 exerts a stable support effect on the operation of the support rod 50. When the support bar 50 has transported the object to an appropriate altitude position, the coil 46 in the electric box 44 is brought into a disconnected state by pressing the control switch 70 again. Under this situation, the yoke 45 switches the brake device 40 to the braking position P <b> 2 by attracting the electric box plate 49 with the magnetic force of the permanent magnet 47. As shown in FIGS. 6 and 7, the outer lid 42 of the brake device 40 cannot be continuously rotated, and the support rod 50 can obtain a braking effect by the brake device 40 and the positioning of the members is completed. The

  As described above, in the support arm 10 with a brake function according to the present invention, the elastic member 33 generates an elastic force that resists gravity, so that the support bar 50 stably conveys the object. In addition, in the transportation process, the brake device 40 can be activated by the control switch 70 according to actual needs. Therefore, the brake device 40 exerts a braking effect on the support rod 50, thereby fixing the target object at a predetermined position. Therefore, it is possible to realize the purpose of improving the convenience of operation.

DESCRIPTION OF SYMBOLS 10 Support arm with brake function 20 Fixed part 22 Pivoting part 24 Mounting part 30 Elastic device 31 Outer lid 32 Mounting seat 322 First end wall 324 Second end wall 326 Mounting groove 328 Screw hole 33 Elastic member 34 End cover 35 Preload adjusting block 352 Countersunk hole 36 Preload adjusting screw 40 Brake device 41 Center shaft 42 Outer lid 43 Brake unit 44 Electric box 45 yoke 46 Coil 47 Permanent magnet 48 Leaf spring 49 Electric box plate 50 Support rod 51 First rod member 52 Second anchor member 53 Third anchor member 532 Target fixing part 54 First pivot 55 Second pivot 56 Third pivot 57 Switch base 60 Flexible member 62 Fixed block 64 Drive wheel 70 Control switch P1 Release position P2 Braking position

Claims (5)

A fixing portion, an elastic device, a brake device, a support bar, and a flexible member;
The elastic device has a mounting seat, an elastic member , an end cover , a preload adjusting block, and a preload adjusting screw ,
The mounting seat is provided in the fixing portion and penetrates the first end wall, the second end wall facing the first end wall, and the first end wall and the second end wall. It has a mounting groove , a screw hole is formed in the second end wall,
The elastic member is provided in a mounting groove of the mounting seat, and one end is in contact with the first end wall of the mounting seat,
The end cover is movably provided in a mounting groove of the mounting seat, and is in contact with the other end of the elastic member,
The preload adjusting block is fixed to a fixing portion, has a countersink,
The preload adjusting screw is rotatably provided at the original position in the countersink, and is screwed into the screw hole of the mounting seat.
The brake device has a central shaft, an outer lid, and a brake unit,
The central axis is fixed to the fixed portion;
The outer lid is fitted on the central axis,
The brake unit is provided in the outer lid,
The support bar is pivotally connected to the outer peripheral surface of the outer lid of the fixed portion and the brake device,
The flexible member is provided on the outer peripheral surface of the outer lid of the brake device, one end is fixed to the outer peripheral surface of the outer lid of the brake device, and the other end is a mounting groove of a mounting seat in the elastic device. A support arm with a brake function, wherein the support arm is fixed to an end cover of the elastic device.
  The brake unit includes an electric box, a leaf spring, and an electric box plate, the electric box is fitted into the central axis and fixed to the outer lid, and the leaf spring is fixed to the center. The electric box plate is fixed to a shaft, the electric box plate is fitted to the central shaft, and is fixed to a surface of the leaf spring on the electric box side, and the electric box plate is in a power-off state. When the electric box is in the energized state, the electric box plate is released so that the brake device is positioned at the release position. To do Brake function supporting arm according to claim 1, wherein. The electric box has a yoke, a coil, and a permanent magnet,
The yoke is fixed to the outer lid and is fitted into the central axis,
The coil and the permanent magnet are each provided in the yoke,
The brake device has a control switch;
The control switch controls disconnection and energization of the coil by being electrically connected to the coil of the electric box,
When the coil is in a disconnected state, the yoke adsorbs the electric box plate by the magnetic force of the permanent magnet,
The support arm with a brake function according to claim 2, wherein the yoke releases the electric box plate when the coil is in an energized state. The support rod includes a first flange member, a second flange member parallel to the first flange member, and a third flange member between the first flange member and the second flange member. ,
The first saddle member has one end pivoted to the fixed portion by a first pivot and the other end pivoted to one end of the third collar member by a second pivot.
The second saddle member has one end connected to the outer peripheral surface of the outer lid of the brake device, and the other end pivoted to the other end of the third saddle member by a third pivot.
The support arm with a brake function according to claim 3, wherein the third saddle member is provided with a switch base, and the switch base is provided with a control switch. The flexible member passes through a driven wheel,
The support arm with a brake function according to claim 4, wherein the driven wheel is rotatably fitted to the first pivot.

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