JP7368863B2 - shock actuator - Google Patents

Description

TECHNICAL FIELD The present invention relates to an impact actuator equipped with an amplification mechanism that is applied to wire cutters, bolt clippers, and the like.

In a conventional bolt clipper, for example, as disclosed in Patent Document 1, a pair of blade members each having a cutting edge are integrally formed with gear parts that mesh with each other. By linking the opening and closing operations of the members, large forces can be generated. Note that a mechanism for opening and closing a pair of blade members by linking them through respective gears is generally referred to as an amplification mechanism.

Utility Model Publication No. 59-193626

However, since a very large load is applied to the gear portion, the gear portion is easily worn out or damaged, and there is a problem in that the shearing performance is deteriorated due to the wear and tear of the gear portion. When such a problem occurs, it is necessary to replace the entire blade member, leading to increased costs.
There has also been a demand for the amplification mechanism capable of generating a large force to be applied to uses other than shearing instruments such as bolt clippers and wire cutters.

SUMMARY OF THE INVENTION Therefore, the present invention relates to an impact actuating device that can be applied to applications other than shearing instruments and that can extend the life of an amplifying mechanism.

The present invention provides a tip portion that is pivotally supported on a base portion via a pair of shaft portions provided in parallel with a predetermined interval, and a tip portion located on one side of the shaft portion and a tip portion located on the other side of the shaft portion. an impact amplification mechanism comprising a pair of opening/closing members each having a base portion located at the base thereof; an air hammer mechanism for generating a blow in a predetermined direction by press-fitting compressed air; and a base of the air hammer mechanism and the opening/closing member. and a link mechanism interposed between the air hammer mechanism and the air hammer mechanism to rotate the pair of opening/closing members about their respective shaft portions, the impact amplification mechanism comprising: A pair of gear parts are provided oppositely between the tip part and the base part of the pair of opening/closing members, and a tooth part is interposed between the pair of gear parts and meshes with each gear part. and a spacer member provided with a spacer member, and when the opening/closing member is rotated by the gear portion and the teeth of the spacer member due to the impact of the air hammer mechanism, the tip portions of the pair of opening/closing members are opened and closed. This is an impact actuating device characterized in that it causes an impact.

With such a configuration, the force caused by the impact of the air hammer mechanism can be amplified by the impact amplification mechanism and converted into an impact force that opens and closes each end portion of the pair of opening/closing members. That is, in the impact amplification mechanism of the present invention, when a force is applied to each base piece of the pair of opening/closing members by the impact of the air hammer mechanism to rotate the base pieces in a direction that causes the base pieces to move relatively apart or in a direction that brings the base pieces closer together. , the opening/closing member is rotated in conjunction with the respective gear parts and the spacer member, and each tip part can be opened or closed by a force larger than the force applied to each base part. . As a result, the impact actuating device of the present invention can be applied to applications where hydraulic mechanisms have been used due to lack of force in air hammer mechanisms, and the desired impact force can be exerted. The air hammer mechanism can be operated more simply and easily than the hydraulic mechanism, requires less energy for operation, and has a more compact device. Thereby, the configuration of the present invention can improve workability and reduce the effort and cost required for the work. Furthermore, in an environment where a hydraulic mechanism is used, there is a risk of ignition due to electrical short circuits, tracking phenomena, etc., but this risk can be reduced by using the configuration of the present invention in place of a hydraulic mechanism. It can be done.

In addition, in such a configuration, the spacer member functions as a so-called "planetary gear", and the so-called gear teeth mesh with the gear part of one opening/closing member, one tooth part of the spacer member, and the other part. Since there are two locations, the gear part of the opening/closing member and the other tooth part of the spacer member, the load applied during rotation is distributed at each meshing location, and excessive stress concentration can be avoided. Problems due to wear and tear of each opening/closing member can be made less likely to occur. In addition, if the material constituting the spacer member is selected to have a relatively lower hardness than the material constituting the opening/closing member, the spacer member will exhibit a shock absorbing effect, making it easier to open/close. It is possible to prevent wear and tear on the members. Furthermore, even if the teeth of the spacer member become worn out or damaged, there is no need to replace the entire opening/closing member as in the past, so costs associated with parts replacement can be significantly reduced.

In addition, when applying a force to objects of different dimensions through the tip, the distance between the axes of a pair of opening/closing members for each object is generally adjusted in order to appropriately change the point of force or the point of action. etc. may need to be changed. On the other hand, in the configuration of the present invention, if a spacer member with a size and shape corresponding to the dimensions of the object to be acted upon and the amount of load to be applied to the object is adopted, the opening/closing member itself can be used as is without changing it. In such a case, it is also possible to significantly reduce the cost associated with parts replacement.

Furthermore, by appropriately changing the material of the spacer member to change its hardness, it is also possible to change the torque adjustment during rotation. In addition, by appropriately changing the shape of the tooth portion of the spacer member, it is possible to relatively vary the torque in the initial section, the torque in the middle section, and the torque in the final section when the opening/closing member rotates. It is also possible to realize the operation of the opening/closing member with increased instantaneous acceleration in the middle period.

The above-described impact actuating device according to the present invention includes a force applying member which is disposed so as to be movable in one direction and applies a pressing force or a tensile force to a predetermined object by movement in the one direction; an operation conversion mechanism that is interposed between the force member and the tip portions of the pair of opening/closing members and converts the opening or closing operation of both tip portions into movement of the force applying member in the one direction. A certain configuration is proposed.

In this configuration, the impact of the air hammer mechanism applies a pressing force or tensile force to the object through the rotation of the opening/closing member, and the impact force of the air hammer mechanism is applied to the object by the impact force. The amplification mechanism can amplify the force, and the amplified force can push or pull the object. According to this configuration, it is possible to stably and easily apply a desired pressing force or tensile force, which has been insufficient in the air hammer mechanism so far. (work), and it is possible to improve workability and reduce cost and labor required for the action.

As mentioned above, the impact actuating device of the present invention can be applied to applications where air hammer mechanisms were insufficient in the past, and can exert the desired impact force, making it possible to replace conventional hydraulic mechanisms. By adopting this method, it is possible to improve work efficiency and reduce costs and labor. Furthermore, the configuration of the present invention has the excellent effect of extending the life of the impact amplification mechanism.

1 is a plan view of an impact actuating device 1 according to a first embodiment. FIG. 2 is an enlarged plan view showing a partially cutaway impact amplification mechanism 3 constituting the impact actuating device 1. FIG. FIG. 4 is an explanatory diagram of the operation of the force applying member 41. FIG. 5 is a plan view of an impact actuating device 51 according to a second embodiment. FIG. FIG. 8 is an explanatory diagram of the operation of the force applying member 81. FIG. 7 is an explanatory diagram of the operation of a modified example of the impact actuating device.

Embodiments of the present invention will be described with reference to Examples 1 and 2 below.

(Example 1)
As shown in FIG. 1, the impact actuating device 1 of the first embodiment includes an air hammer mechanism 2 that is a power source, an impact amplification mechanism 3 that amplifies the force applied by the air hammer mechanism 2, and an air hammer mechanism 3 that amplifies the force applied by the air hammer mechanism 2. It includes a link mechanism 4 that transmits force to the impact amplification mechanism 3, and a percussion force actuation mechanism 5 that is pressed and operated by the impact amplification mechanism 3. The impact actuating device 1 includes the air hammer mechanism 2, the link mechanism 4, the impact amplifying mechanism 3, and the impact actuating mechanism 5 arranged in a line in one direction. Here, in the embodiment, the above-mentioned one direction will be referred to as the front-rear direction, the air hammer mechanism 2 side will be referred to as the rear, the percussion force actuating mechanism 5 side will be referred to as the front, and the lateral direction will be referred to as the left-right direction.

As shown in FIG. 2, the impact amplification mechanism 3 includes a base portion 11 made of a metal plate-like member, and a pair of left and right opening/closing members 12 made of metal. The base portion 11 is made of a substantially rectangular flat plate, and includes a pair of left and right shaft portions 13, 13 protruding from one flat plate surface. These shaft portions 13, 13 are provided parallel to each other at a predetermined interval in the left-right direction.

The pair of left and right opening/closing members 12 includes a base piece 21 connected to the link mechanism 4, a center piece 22 that rotatably supports the shaft 13 of the base 11, and a center piece 22 that operates the impact force actuating mechanism 5. The leading edge portions 23 are integrally coupled in the front-rear direction, and have shapes that are substantially symmetrical to each other. Here, the pair of opening/closing members 12 , 12 are respectively pivotally supported by the shaft portion 13 of the base portion 11 at each central piece portion 22 , are arranged to face each other in the left-right direction, and are centered around the respective shaft portions 13 . They can be rotated in relation to each other. Incidentally, the details of the related mechanisms will be described later because they relate to the main part of the present invention.

On the other hand, the air hammer mechanism 2 is configured to strike a piston (not shown) with the inflow of compressed air to reciprocate the piston in the front and back direction, and has a conventionally known configuration. The piston of the air hammer mechanism 2 is connected to the base pieces 21, 21 of the opening/closing members 12, 12 via the link mechanism 4. The link mechanism 4 converts the movement of the piston of the air hammer mechanism 2 in the front-back direction into the movement of the base pieces 21, 21 of the opening/closing members 12, 12 in the left-right direction. When the piston of the air hammer mechanism 2 is reciprocated in the front-back direction by the link mechanism 4, the base pieces 21, 21 of the left and right opening/closing members 12, 12 are opened and closed in the left-right direction. Here, as described above, the left and right opening/closing members 12, 12 are pivotally supported by the shaft parts 13, 13 of the base part 11, respectively, so they are rotated by opening and closing the respective base pieces 21, 21. Each of the tip portions 23, 23 is closed and opened in the left-right direction.

Next, the main parts according to the present invention will be explained.

As shown in FIG. 2, the pair of left and right opening/closing members 12, 12 described above have gear parts 25, 25 facing each other formed in the center pieces 22, 22, respectively. Here, the gear parts 25, 25 are formed by cutting gears along circular arcs on the side edges of the central pieces 22, 22 that face each other.

Furthermore, a spacer member 31 is interposed between each of the gear parts 25, 25 forming the left and right opening/closing members 12, 12. The spacer member 31 is formed to have a predetermined length in the front-rear direction, and tooth portions 32, 32 that mesh with the gear portions 25, 25, respectively, are provided on both left and right sides along the front-rear direction.

The left and right opening/closing members 12, 12 are rotated about the shaft portions 13, 13 of the base portion 11 by opening and closing the base portions 21, 21 in the left-right direction (see FIG. 3). At this time, the left and right opening/closing members 12, 12 rotate while the left and right gear parts 25, 25 mesh with the tooth parts 32, 32 of the spacer member 31, respectively. By rotating the left and right opening/closing members 12, 12 through the spacer member 31 in this manner, each tip portion 23, 23 is opened and closed with a force greater than the force for opening and closing each base portion 21, 21. Can be opened and closed.

The tip portions 23, 23 of the opening/closing members 12, 12 are provided with curved contact side edges 24, 24, respectively, which face each other. In the left and right opening/closing members 12, 12, when both tip portions 23, 23 operate to close due to their rotation, respective abutting side edges 24, 24 approach each other, while both tip portions 23, 23 operate to open. Then, the contact side edges 24, 24 are separated from each other.

On the front side of the opening/closing members 12, 12, as shown in FIG. 1, the impact force actuation mechanism 5 described above is arranged. The percussion force actuating mechanism 5 includes a force applying member 41 that is moved in the front-rear direction by opening and closing the tip portions 23, 23 of the opening/closing members 12, 12. The force applying member 41 is integrally provided with a substantially hemispherical force receiving portion 46 and a substantially cylindrical pressing portion 47 protruding forward from the force receiving portion 46. The abutting side edges 24, 24 of the tip portions 23, 23 forming the left and right opening/closing members 12, 12 are brought into contact with the hemispherical surface. Further, the percussion force actuating mechanism 5 includes a substantially cylindrical guide member 42 that fits inside the pressing portion 47 of the force applying member 41 so as to be slidable in the front-rear direction. A coil spring 43 is interposed between the rear end of the guide member 42 and the pressing portion 47 of the force applying member 41, and the coil spring 43 causes the force applying member 41 to move against the guide member 42. Forced backwards. Note that a collision end (not shown) of a predetermined shape is provided at the tip of the pressing portion 47 to apply a pressing force by colliding with a workpiece (corresponding to an object to be acted upon according to the present invention).

As shown in FIG. 3, the impact force actuating mechanism 5 operates by rotating the left and right opening/closing members 12, 12 of the impact amplification mechanism 3 in the direction of closing the respective tip portions 23, 23. The force applying member 41 that is in contact with the contact side edges 24, 24 of the portions 23, 23 moves forward against the biasing force of the coil spring 43 (see FIG. 3(B)). Thereafter, when the left and right tip portions 23, 23 rotate in the opening direction, the force applying member 41 moves rearward according to the biasing force of the coil spring 43. In this way, in the impact force actuating mechanism 5, the force applying member 41 moves in the front-rear direction when the opening/closing members 12, 12 of the impact amplification mechanism 3 rotate.

In addition, in the configuration of the first embodiment, the operation conversion mechanism according to the present invention is formed by the contact side edges 24, 24 of the left and right opening/closing members 12, 12 and the force receiving part 46 of the force applying member 41. It is configured.

In the impact actuating device 1 of the first embodiment, when the air hammer mechanism 2 is driven, the base pieces 21, 21 of the left and right opening/closing members 12, 12 are suddenly actuated to open due to the impact of the air hammer mechanism 2. The pieces 23, 23 are suddenly operated to close. By closing the tip portions 23, 23, the force applying member 41 rapidly moves forward and collides with a predetermined workpiece (the object of the present invention) placed in front of the force applying member 41. Specifically, as shown in FIG. 3, when the base pieces 21, 21 of the opening/closing members 12, 12 are suddenly opened in the direction of separating from each other due to the impact of the air hammer mechanism 2, the opening/closing members 12, 12 The gear parts 25, 25 rotate while meshing with the tooth parts 32, 32 of the spacer member 31, and the tip parts 23, 23 are abruptly closed in a direction in which they approach each other. As a result, the force applying member 41 is pushed forward by the contact side edges 24, 24 of the tip pieces 23, 23, and rapidly moves forward. Then, the force applying member 41 collides with the workpiece placed in front of the force applying member 41, and a pressing force acts on the workpiece. Here, the collision of the force applying member 41 occurs suddenly due to the impact of the air hammer mechanism 2, and in this collision, due to the rotation via the gear parts 25, 25 and the spacer member 31, the force of the impact is applied. A relatively large impact force is applied. On the other hand, when the piston of the air hammer mechanism 2 retreats rearward, the base pieces 21, 21 of the opening/closing members 12, 12 close in the approaching direction, and the tip pieces 23, 23 open in the separating direction. As a result, the force applying member 41 moves rearward according to the urging force of the coil spring 43. In this way, the force applying member 41 can be rapidly moved from the reference position (FIG. 3(A)) to the pressing position (FIG. 3(B)) in front of the reference position by driving the air hammer mechanism 2. , it is possible to return to the reference position from the pressed position.

As described above, this impact actuating device 1 reduces the force caused by the impact of the air hammer mechanism 2 by rotating the left and right opening/closing members 12, 12 via the respective gear parts 25, 25 and the spacer member 31. It can be amplified and generated as a pressing force of the force applying member 41. According to the configuration of the first embodiment, it can be applied to applications in which the workpiece was pressed using a hydraulic system due to lack of force in the air hammer mechanism, so that the desired pressing force can be applied to the workpiece. can be made to act easily and stably.

In addition, since the shock amplification mechanism 3 is arranged such that the gears 25, 25 of the left and right opening/closing members 12, 12 are arranged via a spacer member 31, the load applied during rotation can be distributed, and problems caused by wear and tear can be avoided. The occurrence of can be suppressed. Thereby, it is possible to suppress the occurrence of damage due to long-term use, and it is possible to reduce running costs.

In addition, in the configuration of this embodiment, the amount of movement of the force applying member 41 in the front-rear direction is controlled by adjusting the amount of operation (amount of movement in the opening and closing direction) for opening and closing the left and right tip portions 23, 23. Can be set. Therefore, the force for pressing the workpiece and the amount of deformation of the workpiece due to collision with the force applying member 41 can be adjusted. Specifically, the interval between the shaft parts 13, 13 is adjusted according to the workpiece, and the opening/closing members 12, 12 are pivotally supported on the base part 11 provided with the shaft parts 13, 13. A spacer member 31 is interposed between each of the gear parts 25, 25 of the opening/closing members 12, 12 which are pivotally supported on the base part 11. In this way, the amount of opening/closing operation of the tip portions 23, 23 can be adjusted, and the pressing force and amount of deformation can be adjusted depending on the workpiece.

(Example 2)
As shown in FIGS. 4 and 5, the impact actuating device 51 of the second embodiment includes an impact amplification mechanism 53 having a pair of left and right opening/closing members 62, 62 that are opened/closed by the drive of the air hammer mechanism 2, and the opening/closing members 62, The impact force actuating mechanism 55 includes a force applying member 81 that moves in the front-rear direction when the opening/closing operation of 62 is performed. The base pieces 71, 71 of the left and right opening/closing members 62, 62 are connected to the air hammer mechanism 2 via the link mechanism 4, as in the first embodiment. In the second embodiment, the air hammer mechanism 2 and the link mechanism 4 are the same as in the first embodiment, so the same reference numerals are used and the explanation thereof will be omitted.

The impact amplification mechanism 53 includes a base portion 11 similar to that in the first embodiment, and a pair of left and right opening/closing members 62, 62 pivotally supported by the shaft portions 13, 13 of the base portion 11, respectively. , 62, and the spacer member 31 is interposed between the gear portions 75, 75, which are provided in opposition to each other. Here, the opening/closing member 62 has a substantially L-shaped end piece 73 and the base piece 71 connected via a center piece 72, and the gear part 75 is connected to the center piece 72. is formed. The left and right opening/closing members 62 , 62 are arranged symmetrically and pivotally supported by the base portion 11 , and their gear portions 75 , 75 are meshed with the tooth portions 32 , 32 of the spacer member 31 . As in the first embodiment, the pair of left and right opening/closing members 62, 62 are centered around the respective shaft parts 13, 13, while the respective gear parts 75, 75 and the tooth parts 32, 32 of the spacer member 31 are engaged with each other. Rotate in conjunction with each other. That is, when the left and right opening/closing members 62, 62 are rotated via the link mechanism 4 by the drive of the air hammer mechanism 2, the tip portions 73, 73 of the opening/closing members 62, 62 are opened and closed. Note that the spacer member 31 has the same configuration as in the first embodiment.

The tip portions 73, 73 of the opening/closing members 62, 62 have main rod portions 73a, 73a that are spaced apart in the left-right direction via the accommodation gap 66 in the closed state (see FIG. 5(B)), and the main rod portions 73a. , 73a, and protrusions 73b, 73b protrude from the front ends of the protrusions 73b, 73b toward each other, and each protrusion 73b, 73b is provided with a curved contact side edge 74, 74, respectively. The left and right opening/closing members 62, 62 are connected to the shaft portions 13, 13 of the base portion 11 so that the protrusions 73b, 73b are spaced apart from each other at a predetermined interval when the tip portions 73, 73 are in the closed state. The interval between is set.

On the other hand, the impact force actuating mechanism 55 includes a base member 80 disposed in the housing gap 66 of the left and right opening/closing members 62, 62, and a force applying member 81 that is moved in the front and back direction with respect to the base member 80. . The force applying member 81 is integrally provided with a substantially hemispherical force receiving portion 86 and a substantially cylindrical tension portion 87 protruding forward from the center of the hemispherical surface of the force receiving portion 86, The abutting side edges 74, 74 of the tip pieces 23, 23 forming the left and right opening/closing members 62, 62 are brought into contact with the hemispherical surface of the force receiving portion 86. Here, the left and right opening/closing members 62, 62 are set such that the distance between the protrusions 73b, 73b of the tip portions 73, 73 in the closed state is wider than the outer diameter of the tension portion 87. . Note that a locking tip (not shown) is provided at the tip of the tensioning portion 87 for locking to an object to be acted upon.

Further, the percussion force actuation mechanism 55 includes a substantially cylindrical guide member 82 that fits inside the tension portion 87 of the force application member 81 so as to be slidable in the front-rear direction. A coil spring 83 is interposed between the base member 80 and the force receiving portion 86 of the force applying member 81, and the force applying member 81 is urged forward with respect to the base member 80 by the coil spring 43. ing.

As shown in FIG. 5, when the opening/closing members 62, 62 of the impact amplification mechanism 53 rotate in a direction to close the respective tip portions 73, 73, the impact force actuating mechanism 55 closes the respective tip portions 73, 73. The force applying member 81 that is in contact with the contact side edges 74, 74 moves rearward against the urging force of the coil spring 83 (see FIG. 5(B)). Thereafter, when the left and right tip portions 73, 73 are opened, the force applying member 81 moves forward according to the urging force of the coil spring 83. As described above, in the percussion force actuating mechanism 55 of the second embodiment, the force applying member 81 moves in the opposite direction to that of the first embodiment described above by the rotation of the left and right opening/closing members 62, 62.

In the configuration of the second embodiment, the contact side edges 74, 74 of the left and right opening/closing members 62, 62 and the force receiving portion 86 of the force applying member 81 constitute the operation conversion mechanism according to the present invention. has been done.

In the impact actuating device 51 of the second embodiment, when the air hammer mechanism 2 is driven, the base pieces 71, 71 of the opening/closing members 62, 62 are suddenly opened in the direction of separating from each other due to the impact of the air hammer mechanism 2. Accordingly, the gear parts 75, 75 of the respective opening/closing members 62, 62 rotate while meshing with the tooth parts 32, 32 of the spacer member 31, and the tip parts 73, 73 are abruptly closed in the direction in which they approach each other. be done. As a result, the force applying member 81 is pulled rearward by the contact side edges 74, 74 of the tip pieces 73, 73, and rapidly moves rearward. Here, for example, if a predetermined workpiece is placed in front of the force-applying member 81 and the force-applying member 81 is previously locked to a member (for example, a nail, an anchor, etc.) fixed to the workpiece. By driving the air hammer mechanism 2, the member can be removed from the workpiece. On the other hand, when the piston of the air hammer mechanism 2 retreats backward, the tip portions 73, 73 of the opening/closing members 62, 62 are opened in the separating direction, and the applying member 81 moves forward according to the biasing force of the coil spring 83. do. In this way, the force applying member 81 can be rapidly moved from the reference position (FIG. 5(A)) to the tensioned position (FIG. 5(B)) rearward from the reference position by driving the air hammer mechanism 2. , it is possible to return to the reference position from the tensioned position.

Similar to the first embodiment described above, the configuration of the second embodiment allows the impact force caused by the impact of the air hammer mechanism 2 to be amplified by the impact amplification mechanism 53 to be generated as a tensile force of the force applying member 81. As a result, even in applications where the air hammer mechanism 2 has not been able to generate sufficient tensile force, this configuration can easily and stably generate the necessary tensile force for the application.

Furthermore, similar to the first embodiment, there is an effect that wear and tear caused by rotation of the left and right opening/closing members 62, 62 can be suppressed, and an effect that the amount of movement by the force applying member 81 can be easily adjusted. effect.

The present invention is not limited to the first and second embodiments described above, and can be modified as appropriate without departing from the spirit of the present invention. For example, in the first and second embodiments, the dimensions and shapes of each part can be freely selected as appropriate.

Embodiments 1 and 2 have a configuration in which the force applying member applies a pressing force or a tensile force in the front-rear direction to the workpiece, but the present invention is not limited to this. It is also possible to have a configuration in which the force of is applied to the workpiece. As a specific example, FIG. 6 shows a modification of the first embodiment. In the configuration of this modification, the impact force actuation mechanism 105 has a different configuration from the first embodiment, and the air hammer mechanism 2, impact amplification mechanism 3, and link mechanism 4 have the same configuration as the first embodiment. The impact force actuation mechanism 105 of the modified example includes a force application member 111 and an operation conversion member 112. The actuation converting member 112 includes a substantially hemispherical force receiving portion 116 and a substantially conical pressure transmitting portion 117 protruding forward from the force receiving portion 116. The contact side edges 24, 24 of the left and right opening/closing members 12, 12 are brought into contact with each other. On the other hand, the force applying member 111 has a cylindrical body having an inner circumferential surface that follows the conical outer circumferential surface of the pressure transmitting part 117 and a concave portion that is opened at the rear. (e.g., division), and is composed of a plurality of expansion division parts 113. The pressure transmitting portion 117 of the actuation converting member 112 is fitted into the inner circumferential surface of the recess in the force applying member 111 . In such a modification, the air hammer mechanism 2 is driven to rapidly close the tip portions 23, 23 of the left and right opening/closing members 12, 12, and accordingly, the operation conversion member 112 rapidly moves forward. Due to this movement of the actuation converting member 112, the plurality of expansion division parts 113 constituting the force applying member 111 rapidly move laterally and radially. This modification is applied as an air hammer type crusher (packer), and the expansion division portion 113 of the operation conversion member 112 is rapidly moved radially in the lateral direction by the drive of the air hammer mechanism 2. It can crush objects such as rocks and concrete. In addition, although not shown in FIG. 6, a biasing means for biasing the operation conversion member 112 rearward, a biasing means for returning the plurality of expansion division parts 113, and the like are provided. As a result, when the left and right tip portions 23, 23 are opened, the actuation conversion member 112 moves rearward, and the plurality of expansion division portions 113 are retracted to the normal position. According to the configuration of this modified example, it can be applied to a crusher that was previously a hydraulic type due to insufficient power in an air hammer mechanism, and can easily and stably crush rocks, concrete, etc. In the configuration of the modified example, the operation conversion mechanism according to the present invention is formed by the contact side edges 24, 24 of the opening/closing members 12, 12, the operation conversion member 112, and the inner peripheral surface of the recess of the force applying member 111. is configured.

In the configurations of the first and second embodiments and the modified example, the link mechanism 4 has a pair of left and right link pieces 16, 16 pivoted on the base pieces 21, 21 of the opening/closing members 12, 12, respectively. However, the present invention is not limited to this, and a link mechanism consisting of a plurality of gears (gears), a link mechanism from a rack and pinion gear, etc. can also be applied.

In the configurations of Embodiments 1 and 2 and the modified example, the base portion is provided with a pair of elongated shaft mounting portions, and each shaft portion can be attached to each shaft mounting portion, thereby reducing the distance between the shaft portions. It may be possible to change it as appropriate. For example, by making the distance between the shaft parts larger than in the above embodiment and widening the interval between the opening and closing members, and then arranging a spacer member that can set the force applying member to a desired amount of movement, the amount of movement can be adjusted. can be executed depending on the work (object to be acted on).

In the configurations of Examples 1 and 2 and the modified example, the base portion 11 is provided with the shaft portions 13, 13, but the present invention is not limited to this. A configuration may also be adopted in which a pair of holes are provided in the base portion. Furthermore, the base part, the shaft part, and the opening/closing member may be assembled as separate members.

In Embodiments 1 and 2 and the modified examples, the tip portion of the opening/closing member is provided with a curved abutting side edge that abuts the force receiving portion of the force applying member, but the present invention is not limited to this. A configuration may be adopted in which the tip portion is provided with a contact side edge portion that is inclined in the shape of a shape. Even with such a configuration, the force applying member can be moved in the front-back direction as in the embodiment.

In the first and second embodiments and the modified example, the contact side edge of the opening/closing member and the force receiving part of the force applying member convert the rotation of the opening/closing member into the back and forth movement of the force applying member (operation conversion). However, the present invention is not limited to this, and it is also possible to use a gear, for example, to convert the rotation of the opening/closing member into movement of the force applying member.

1, 51 Impact actuation device 2 Air hammer mechanism 3, 53 Impact amplification mechanism 4 Link mechanism 5, 55, 105 Impact actuation mechanism 11 Base portion 12, 62 Opening/closing member 13 Shaft portion 21, 71 Base piece portion 22, 72 Center piece Parts 23, 73 Tip pieces 24, 74 Contact side edges 25, 75 Gear part 31 Spacer member 32 Tooth parts 41, 81, 111 Force applying members 42, 82 Guide members 43, 83 Coil springs 46, 86, 116 Receptacle Force section 47 Press section 66 Accommodation gap 73a Main rod section 73b Projection section 80 Base member 87 Tension section 112 Operation conversion member 113 Expansion division section 117 Pressure transmission section

Claims (2)

The tip part is pivoted on the base part through a pair of parallel shaft parts provided at a predetermined interval, and the tip part is located on one side of the shaft part and the base part is located on the other side of the shaft part. an impact amplification mechanism comprising a pair of opening/closing members each having a piece;
An air hammer mechanism that generates a blow in a predetermined direction by press-fitting compressed air;
and a link mechanism that is interposed between the air hammer mechanism and the base piece of the opening/closing member, and rotates the pair of opening/closing members about their respective shafts by the impact of the air hammer mechanism. And,
The impact amplification mechanism is
a pair of gear parts provided oppositely between the tip piece part and the base piece part of the pair of opening/closing members;
a spacer member interposed between the pair of gear parts and having a tooth part that meshes with each gear part;
An impact characterized in that the opening/closing member is rotated by the gear portion and the teeth of the spacer member due to the impact of the air hammer mechanism, thereby opening and closing the end portions of the pair of opening/closing members. Actuation device. a force applying member disposed so as to be movable in one direction and applying a pressing force or a tensile force to a predetermined object by moving in the one direction;
an operation conversion mechanism that is interposed between the force applying member and the tip portions of the pair of opening/closing members and converts an opening operation or a closing operation of both tip portions into movement of the force applying member in the one direction; The impact actuating device according to claim 1, further comprising: an impact actuating device.

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