JP2008221256A - Tool for caulking - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tool for caulking capable of easily caulking a juncture of a heat exchanger without increasing a production cost. <P>SOLUTION: The tool 10 for caulking is used when respectively caulking a cylindrical inflow section 12 and effluent section 13 disposed in the heat exchanger 11 in order to fix tube members 14 inserted into the inflow section 12 and the effluent section 13. The tool for caulking includes; first and second caulking claw members 42, 43 for putting the inflow section 12 and the effluent section 13 in-between in order to caulk them; a rotation body 50 to be input with power for caulking the inflow section 12 and the effluent section 13; the transmission mechanism 20 for transmitting the power input to the rotation body 50 to the respective caulking claw members 42, 43; and a toggle mechanism 21 for increasing the power in at least one of a step that the power is input to the rotation body 50 and the step that the power is transmitted to the respective caulking claw members 42, 43 by a transmission mechanism 20. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a caulking jig suitable for use in, for example, caulking to fix a pipe member to a connection portion of a heat exchanger provided in a vehicle.

  Conventionally, for example, a heat exchanger such as a radiator and a condenser provided in a vehicle is provided with a connecting portion such as a cylindrical inflow portion for allowing a refrigerant to flow into the heat exchanger, and is inserted into the connecting portion. In order to fix the pipe member to the connection portion, it is known to crimp the connection portion to the pipe member (see, for example, Patent Document 1).

  In order to caulk the connecting portion, a large caulking force of 100 kgf or more is required, and it is difficult to caulk the connecting portion manually by using, for example, a tool.

  Therefore, conventionally, when caulking the connection portion, caulking equipment using an air power source by electric control is used.

According to such a caulking facility, it is possible to generate a large caulking force of 100 kgf or more by using an air power source, so that the connecting portion can be easily caulked.
JP 2002-206882 A

  However, since the power source used to generate a large caulking force in the caulking equipment is air, electrical equipment such as a drive source for driving the caulking equipment in air, electrical wiring, etc. are required. Therefore, the manufacturing cost is increased.

  In addition, since the caulking equipment uses air as a power source, it is not possible to install caulking equipment in the unit assembly line in a later process. It is necessary to install in a place different from the place where For this reason, expansion of a work space and deterioration of work balance are caused.

  Therefore, it is conceivable to fix the connecting portion of the heat exchanger to the pipe member using a fixing member such as a clip member without caulking the connecting portion using a caulking jig.

  However, since a fixing member is separately required to fix the connection portion to the pipe member, the number of parts increases, resulting in an increase in manufacturing cost.

  Therefore, an object of the present invention is to provide a caulking jig capable of easily caulking a connection portion of a heat exchanger without causing an increase in manufacturing cost.

  In order to solve the above-mentioned problem, the invention according to claim 1 is a case where the connecting member is caulked to fix the tube member inserted in the cylindrical connecting portion provided in the heat exchanger to the connecting portion. A pair of caulking claw members for clamping the connecting portion, an input portion to which power for caulking the connecting portion is input, and an input to the input portion. At least one of a transmission mechanism for transmitting the power thus generated to each caulking claw member, a process in which the power is input to the input portion, and a process in which the transmission mechanism is transmitted to each caulking claw member. And a booster mechanism for increasing the power in the process.

  The invention according to claim 2 is the invention according to claim 1, wherein each of the caulking claw members has a claw portion sandwiching the connection portion at one end portion, and the pivot claw member is provided around the pivot provided respectively. Both claw portions are rotatable in a direction toward and away from each other, the input portion is a rotating body that can rotate around a rotation axis, and the transmission mechanism includes a plurality of rotating members connected to the rotating body. A link mechanism having a link member for converting the rotational motion of the rotating body into a linear motion; and performing the linear motion by the power transmitted through the link mechanism, thereby transmitting the power to the caulking claw members to the both claws. Indentation that is pushed between the other end portions so that the other end portions of the caulking claw members are separated from each other so as to act as rotational force in a direction in which the portions approach each other. With a member and front One end portion of the link member connected to the rotating body among the plurality of link members of the link mechanism is arranged around an axis provided on the rotating body at a position shifted from the rotating shaft of the rotating body. One end of the boost mechanism is fixed to the rotating shaft of the rotating body to rotate the rotating body, and the length dimension of the boosting mechanism is the same as that of the rotating shaft of the rotating body. An operation lever larger than the distance between the link member supported by the body and the shaft is provided.

  According to a third aspect of the present invention, in the second aspect of the present invention, the booster mechanism is formed at a pushing end portion of the pushing member, and is opposed to each other in a width direction perpendicular to the advancing direction of the pushing member. In addition, a taper portion having a pair of sliding surfaces each sliding on the other end portion of each of the caulking claw members is gradually provided toward each of the caulking claw members.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, the angle of each sliding surface with respect to the traveling direction of the pushing member decreases from the distal end to the proximal end of the tapered portion. It is characterized by that.

  The invention according to claim 5 is the invention according to any one of claims 3 to 4, wherein each of the sliding surfaces passes through the center of the pushing member in the width direction and the pushing member advances. Symmetrical with respect to a straight line along the direction, and the size of the distance between the other end and the pivot of one of the caulking claw members and the size of the distance between the pivot and the claw are respectively in the other caulking claw member. It is characterized by being equal to their size.

  According to a sixth aspect of the present invention, in the invention according to any one of the third to fifth aspects, the maximum width dimension of the tapered portion is determined so that the claw portions of the caulking claw members respectively determine the connection portions. It is characterized in that it is substantially equal to the distance between the other end portions at the rotation position of each caulking claw member when caulking with a caulking amount.

  According to a seventh aspect of the present invention, in the invention according to any one of the second to sixth aspects, each of the pivots includes the pivot and the other end portion of the caulking claw member provided with the pivot. Each of the caulking claw members is provided at a position where the distance between the pivot and the claw portion of the caulking claw member provided with the pivot is larger than the distance between the pivots.

  The invention according to claim 8 is the invention according to any one of claims 2 to 7, wherein the connecting portion of the heat exchanger is placed at a predetermined caulking position between the caulking claw members. And a clamp device for holding the heat exchanger.

  The invention according to claim 9 is the invention according to claim 8, wherein the clamping device has a pair of clamping members having a clamping part that clamps the connection part, and each of the clamping members is the same or The clamping portions can be rotated around different shaft members in directions toward and away from each other, and each of the caulking claw members includes the clamping portions so that each of the claw portions corresponds to the clamping portion. Each pivot shaft of each caulking claw member is provided on each clamping member, and each of the shaft members is disposed closer to each clamping portion than each pivot shaft. It is characterized by.

  A tenth aspect of the present invention is the pedestal on which each of the caulking claw members, the input portion, the transmission mechanism, and the booster mechanism are respectively mounted. The guide is further provided with a guide member for guiding the linear movement of the pushing member toward a predetermined pushing position between the caulking claw members.

  According to an eleventh aspect of the present invention, in the invention according to the tenth aspect, the heat exchanger includes a housing in which the connection portion is provided and into which the refrigerant flows through the connection portion, and each of the caulking claw members Each of the claw portions protrudes to the side of the pedestal so that the connection portion is sandwiched between the claw portions in a state where the housing of the heat exchanger is in contact with a side surface of the pedestal. It is arranged on a pedestal.

  According to the first aspect of the present invention, the power for caulking the cylindrical connecting portion provided in the heat exchanger is inputted to the input portion and the connecting portion after being input to the input portion. It is increased by the booster mechanism in at least one of the processes transmitted by the transmission mechanism to the pair of caulking claw members for sandwiching.

  From this, even when the magnitude of the power input to the input unit for caulking the connection portion with each caulking claw member is smaller than the force required to caulk the connection portion, the power input to the input unit is reduced. By increasing by the booster mechanism, a force large enough to caulk the connecting portion can be output from each caulking claw member with a mechanical configuration rather than an electrical configuration.

  Thereby, since it is possible to use human power without using air as a power source for generating a large caulking force in the caulking jig, a driving source for electrically driving the caulking jig using air. Such electrical equipment and electrical wiring can be made unnecessary.

  Therefore, the manufacturing cost of the caulking jig can be surely suppressed as compared with the conventional case of using an electrically controlled pneumatic power source.

  In addition, since the caulking jig can be used as a power source without using an electrically controlled pneumatic power source, the caulking jig can be installed in the unit assembly line in the subsequent process. It is not necessary to provide a space for performing the caulking work in a place different from the place where the unit assembly line is provided. As a result, it is possible to reliably prevent the conventional work space from being enlarged and the work balance from being deteriorated.

  Further, by using the caulking jig according to the present invention, the connecting portion can be connected to the pipe member without incurring the manufacturing cost as much as when air is used as the power source and without causing an increase in work space and a deterioration in work balance. Therefore, it is not necessary to separately use a conventional fixing member in order to fix the connecting portion to the pipe member. Thereby, since the number of parts does not increase, it is possible to reliably prevent an increase in manufacturing cost as in the prior art.

  According to the second aspect of the present invention, when power is input to the rotating body that can rotate around the rotating shaft, the power is pushed through the link mechanism having a plurality of link members connected to the rotating body. To communicate. The pushing member is pushed between the other end portions of each caulking claw member by performing a linear motion, and each caulking claw member rotates in a direction in which the claw portions at the respective one end portions approach each other.

  As a result, the connecting portion can be sandwiched between the claw portions of the caulking claw members by the power transmitted from the rotating body via the link mechanism and the pushing member.

  In addition, one end of the link member connected to the rotating body among the plurality of link members of the link mechanism is swingable about an axis provided on the rotating body at a position shifted from the rotating shaft of the rotating body. One end of an operating lever for rotating the rotating body is fixed to the rotating shaft of the rotating body, and the length of the operating lever is supported by the rotating shaft of the rotating body and the rotating body. It is larger than the distance from the axis of the link member.

  From this, when rotating the rotating body around the rotating shaft to the other end of the operating lever when rotating the rotating body, the other end of the operating lever is used as a power point, the shaft member of the rotating body is used as a fulcrum, When one end of the connected link member is an action point, the distance between the force point and the fulcrum is larger than the distance between the fulcrum and the action point.

  As a result, the rotational force input to the other end of the operation lever is transmitted from the other end of the operation lever to the shaft of the link member via the operation lever and the rotating body, and between the force point and the fulcrum, After being increased according to the so-called lever principle in accordance with the interval of the output, it is output from the shaft.

  Therefore, a force larger than the force input to the other end of the operation lever can be applied to one end of the link member.

  Further, since one end of the link member connected to the rotating body is supported by a shaft provided on the rotating body at a position shifted from the rotating shaft of the rotating body, the shaft of the link member connected to the rotating body Is the force point, the shaft member of the rotating body is the fulcrum, and the other end portion of the link member is the action point, the force acting on the shaft of the link member is the force point and After being increased according to the lever principle according to the interval between the fulcrums and the interval between the fulcrum and the action point, the signal is output from the other end of the link member.

  Thereby, it is larger than the force which acted on the one end part of the link member connected to the rotary body from the axis | shaft which is provided in the other end part of the link member connected to the rotary body, and connects this link member to another link member. Force can be output.

  Therefore, the force input to the other end of the operating lever is increased by the boosting action according to the principle of the lever of the operating lever and the rotating body, and further increased through the boosting action of the link member connected to the rotating body. Then, it can output from the axis | shaft provided in the other end part of this link member.

  According to invention of Claim 3, a booster mechanism is provided in the pushing end part of the pushing member, and is a taper part which has a pair of sliding surface which slides on each other end part of each crimping claw member, respectively. The sliding surfaces are opposed to each other in the width direction perpendicular to the advancing direction of the pushing member, and the distance between the sliding surfaces gradually decreases toward the caulking claw members.

  Therefore, when the pushing member is moved by inputting the force input to the operating lever and increasing the force through the operating lever, the rotating body, and the link member to the pushing member, the pushing end portion of each caulking claw member is moved. When pushed between the other end portions, the force input to the pushing member acts as being bisected from each sliding surface of the tapered portion to the other end portion of each caulking claw member. The force acting on the other end of the caulking claw member is made larger than the force inputted to the pushing member according to the so-called wedge principle, that is, according to the angle of each sliding surface with respect to the moving direction of the pushing member. Can do.

  As a result, the force input to the other end of the operating lever is increased by the boosting action of the operating lever, the rotating body, and the link member connected to the rotating body, and the wedge effect of the tapered portion of the pushing member is further increased. After the increase, the force can be applied to the other end portion of each caulking claw member as a force for spreading the other end portion, that is, as a caulking force for caulking the connection portion with each claw portion of each caulking claw member.

  Further, when the sliding end comes into contact with the other end of each caulking claw member when the pushing end is pushed between the other ends of each caulking claw member, the other end of each caulking claw member Therefore, most of the force acting on each sliding surface can be released in the direction along each sliding surface.

  Accordingly, the resistance force in the direction opposite to the advancing direction of the pushing member received by the pushing member from the other end portion of each caulking claw member can be reduced, so that the pushing member between the other end portions of each caulking claw member can be reduced. Pushing can be performed smoothly.

  Further, by pressing the tapered portion of the pushing member between the other end portions of the caulking claw members while sliding the sliding surfaces of the pushing member on the other end portions of the caulking claw members, The force acting on the other end portion of each caulking claw member can easily spread between the other end portions with a size corresponding to the size of the interval between the sliding surfaces.

  According to invention of Claim 4, the angle of each sliding surface with respect to the advancing direction of a pushing member is each small toward the base end from the front-end | tip of a taper part.

  For example, in order to increase the force acting on the other end of each caulking claw member from each sliding surface in order to securely caulk the connecting portion between the claw portions of each caulking claw member, Although it is conceivable to reduce the angle of the sliding surface as a whole as much as possible, if the angle is reduced as a whole, the length from the tip of the tapered portion to the base end becomes longer. The length becomes long and the size of the entire caulking jig becomes large.

  On the other hand, according to the present invention, as described above, the angle of each sliding surface with respect to the traveling direction of the pushing member is reduced from the distal end of the tapered portion toward the proximal end. When the tapered portion is pushed between the other end portions of each caulking claw member, the force acting on the other end portion of each caulking claw member from each sliding surface of the tapered portion is applied between the other end portions of each caulking claw member. As the pushing amount of the tapered portion increases, it can be increased.

  Thereby, for example, from each sliding surface, between the rotation position where the other end portions of the caulking claw members are in contact with each other and the rotation position where the claw portions of the respective caulking claw members are in contact with the connection portions, respectively. In the part where the force to be applied to the other end of each caulking claw member is sufficient for the force that rotates each caulking claw member around the pivot provided on each of the caulking claw members, the angle of each sliding surface is increased and each caulking claw member is increased. Each caulking claw member is rotated so as to be between the rotation position where the claw portion of the claw member abuts the connection portion and the rotation position when each claw portion caulks the connection portion with a predetermined amount of caulking. In a portion that requires a force that deforms the connecting portion in addition to the force, by reducing the angle of each sliding surface to increase the force that acts on the other end of each caulking claw member from each sliding surface Caulking the connection part without increasing the overall length of the pushing member It can be applied to the other end portion of the caulking pawl member a force of sufficient magnitude from the sliding surface to.

  According to the fifth aspect of the present invention, each sliding surface is symmetrical with respect to a straight line passing through the center in the width direction of the pressing member and along the traveling direction of the pressing member, and the other end of one caulking claw member. The size of the space between the pivot and the pivot and the size of the space between the pivot and the claw are equal to those of the other caulking claw member.

  From this, when the other end portion of each caulking claw member is a force point, each pivot is a fulcrum, and each claw portion of each caulking claw member is an action point, the force point, fulcrum and action point of each caulking claw member are The relationship is the same as each other, and when the pushing member is pushed between the other end portions of each caulking claw member, the other is the force point of one caulking claw member corresponding to the sliding surface from one sliding surface Since the magnitude of the force acting on the end and the magnitude of the force acting on the other end that is the force point of the other caulking claw member corresponding to the sliding surface from the other sliding surface are equal to each other, each caulking claw The magnitude of the force output from the claw portion, which is the point of action of the member, can be made substantially equal.

  Accordingly, it is possible to reliably prevent the caulking degree of the connecting portion from being biased due to the different magnitudes of the forces output from the claw portions of the caulking claw members.

  According to the sixth aspect of the present invention, the maximum width dimension of the tapered portion is such that the claw portions of the respective caulking claw members are both at the swiveling position of each caulking claw member when the connecting portion is caulked with a predetermined caulking amount. Since the interval between the other end portions is approximately equal, when the tapered portion is pushed between the other end portions of each caulking claw member, the interval between the other end portions of each caulking claw member is the same as that of each caulking claw member. Since it does not become larger than the interval at the moving position, each caulking claw member is prevented from rotating beyond the rotating position in a direction in which the claw portions approach each other.

  Thereby, each claw claw member rotates beyond the rotation position in a direction in which each claw portion approaches each other, so that each claw portion of each caulking claw member has a caulking amount exceeding a predetermined caulking amount. Since caulking is prevented, it is possible to reliably prevent the caulking of the connecting portion.

  According to the seventh aspect of the present invention, each pivot shaft has a pivot shaft and a caulking claw member provided with the pivot shaft rather than a distance between the pivot shaft and the other end portion of the caulking claw member provided with the pivot shaft. Since each caulking claw member is provided at a position where the distance between the claw portions becomes large, the other end portion of each caulking claw member is used as a power point, each pivot is used as a fulcrum, and each caulking claw member is provided. When the claw portions are the action points, the distance between the force point and the fulcrum is larger than the distance between the fulcrum and the action point.

  From this, the force input from the push-in member to the other end portion of each caulking claw member is transmitted from the other end portion to each claw portion, and between the force point and the fulcrum and between the fulcrum and the action point. After being increased according to the so-called lever principle according to the interval, it is output from each claw part.

  Thereby, the force larger than the force input into the other end part of each caulking claw member can be output from the claw part of each caulking claw member.

  Therefore, the force input to the other end of the operating lever is increased by a boosting action according to the principle of the lever of each of the operating lever, the rotating body and the link member connected to the rotating body, and the wedge of the tapered portion of the pushing member is used. After increasing by the effect and further by a boosting action according to the principle of the lever of each caulking claw member, the connecting portion can be output as caulking force from the claw portion of each caulking claw member.

  According to the invention of claim 8, further comprising a clamp device for holding the heat exchanger in a state where the connection portion of the heat exchanger is placed at a predetermined caulking position between the caulking claw members, By holding the connection part of the heat exchanger at a predetermined caulking position, for example, when an operator holds the heat exchanger by hand with the connection part being at a predetermined caulking position between the respective caulking claw members. There is no need to hold the heat exchanger. Thereby, the workability | operativity for caulking a connection part can be improved reliably.

  Further, by holding the heat exchanger in a state in which the connecting portion of the exchanger is placed at a predetermined caulking position between the caulking claw members by the clamp device, the connecting portion is moved from the predetermined caulking position when the connecting portion is caulked. Shifting is prevented. Thereby, it is possible to reliably prevent the caulking defect from occurring in the connecting part due to the connecting part being displaced from the predetermined caulking position.

  According to the ninth aspect of the present invention, the pair of clamping members of the clamping device can be rotated around the same or different shaft members in a direction in which the clamping portions of the respective clamping members approach each other and away from each other. In addition, each caulking claw member is disposed so as to overlap each clamping member such that each claw portion corresponds to the clamping portion.

  From this, by rotating each caulking claw member around the pivot axis while holding the heat exchanger by clamping the connection portion between the clamping portions of each clamping member, the gap between the claw portions of each caulking claw member The connecting portion can be easily sandwiched between the two.

  Moreover, each pivot of each caulking claw member is provided in each clamping member, and the shaft member of each clamping member is arranged on the side of each clamping part from each pivot.

  When the claw portions of the caulking claw members are in contact with the connection portions, when a force is applied to the other end portions of the caulking claw members, the pivots of the caulking claw members are respectively A force in a direction to widen the interval between the pivots acts from each caulking claw member, and a force in a direction to separate them from each clamping member acts from each caulking claw member via each pivot.

  At this time, for example, when the shaft member of each clamping member is arranged on the same line as the pivot of each caulking claw member, or when arranged on the opposite side of the clamping part side than each pivot, each caulking claw member When a force acts on each clamping member from each of the pivots, the force acts as a rotational force that rotates each clamping member around the shaft member in a direction in which the respective clamping portions are separated from each other. For this reason, the clamping force which acts on the connection part from the clamping part of each clamping member falls, and there exists a possibility that the holding position of a connection part may shift | deviate from an appropriate holding position. If the holding position of the connecting portion is shifted from the proper holding position, the relative position between the connecting portion and the claw portion of each caulking claw member is shifted. As a result, a displacement occurs between the caulking claw members in the degree of caulking of the connecting portion by each caulking claw member.

  On the other hand, according to the present invention, as described above, each pivot shaft of each caulking claw member is provided on each clamping member, and the shaft member of each clamping member is closer to each clamping portion than each pivot shaft. Therefore, when a force is applied to the other end portion of each caulking claw member in a state where the claw portion of each caulking claw member is in contact with the connecting portion, each clamping member is applied to each clamping member. When force in the direction of separating them from each other is applied from each caulking claw member via each pivot, the force acting on each clamping member is about the axis member in the direction in which each clamping part approaches each other. It acts as a rotational force that rotates the motor.

  Thereby, the clamping force from the clamping part of each clamping member to the connection part by the force acting from each crimping claw member can be increased, and the clamping force does not decrease.

  Therefore, it is possible to surely prevent the caulking claw members from being shifted in the degree of caulking of the connecting portions by the caulking claw members due to the decrease in the clamping force of the clamping portions.

  According to the tenth aspect of the present invention, the pedestal further includes a pedestal on which each of the caulking claw members, the input unit, the transmission mechanism, and the boosting mechanism are mounted, and the pedestal includes a predetermined pushing position between the caulking claw members. Since the guide member for guiding the linear movement of the pushing member toward the head is provided, the pushing member is prevented from moving in the direction orthogonal to the moving direction. Accordingly, it is possible to reliably prevent the pushing position of the pushing member between the caulking claw members from deviating from the predetermined pushing position by moving the pushing member in a direction orthogonal to the moving direction.

  According to the eleventh aspect of the invention, each of the caulking claw members is provided with each claw portion of the pedestal so that the connection portion is sandwiched between the claw portions in a state where the housing of the heat exchanger is in contact with the side surface of the pedestal. Since it is arranged on the pedestal so as to protrude sideways, by contacting the housing to the side surface of the pedestal, when the connection part is sandwiched between both claws, it is directed toward the side surface of the pedestal. The movement of the housing is restricted.

  As a result, the housing is moved toward the side surface of the pedestal while the connection portion is sandwiched between both the claw portions, thereby reliably preventing the caulking position of the connection portion by both the claw portions from deviating from the proper caulking position. be able to.

  Moreover, the position of the housing in the direction toward the side surface of the pedestal is positioned by bringing the housing into contact with the side surface of the pedestal.

  As a result, when the connection portion is sandwiched between the claw portions of the caulking claw members, the connection portion is moved between the side surfaces of the pedestal while the housing is in contact with the side surface of the pedestal, so that the connection portion is properly connected between the both claw portions. The housing can be easily positioned at an appropriate arrangement position arranged at the caulking position.

  The present invention will be described with reference to the illustrated embodiments.

  FIG. 1 shows an inflow for fixing a pipe member 14 inserted into a cylindrical inflow portion 12 and a cylindrical outflow portion 13 of a heat exchanger 11 provided in a vehicle to the inflow portion 12 and the outflow portion 13 respectively. An example in which the present invention is applied to the caulking jig 10 used when caulking the part 12 and the outflow part 13 will be described.

  As is well known in the art, the heat exchanger 11 includes a radiator (not shown) for cooling a vehicle engine, a condenser used for an air conditioner, and the like, and has a housing 15 into which a refrigerant flows. In the illustrated example, the housing 15 has a substantially rectangular parallelepiped shape, and the inflow portion 12 and the outflow portion 13 are provided on the rectangular upper surface 15a at intervals from each other in the long side direction of the upper surface 15a. The inflow portion 12 and the outflow portion 13 are each made of metal in the illustrated example. The inflow portion 12 is connected to a pipe member 14 for guiding the refrigerant into the housing 15, and is a connection portion for allowing the refrigerant to flow into the housing 15. The outflow portion 13 is connected to the vehicle from the housing 15. It is connected to a pipe member 14 for guiding the member, and is a connecting portion for allowing the refrigerant to flow out of the housing 15. As shown in FIG. 2, enlarged diameter portions 12 b and 13 b each having a diameter larger than the diameter of the other portion are formed at the upper end portion 12 a of the inflow portion 12 and the upper end portion 13 a of the outflow portion 13.

  As shown in FIG. 1, the caulking jig 10 according to the present invention includes a pedestal 16, two sets of caulking portions 17 for clamping the inflow portion 12 and the outflow portion 13, and a heat exchanger 11. A pair of clamping devices 18 for holding.

  Further, the caulking jig 10 has an input unit 19 to which power for caulking the inflow portion 12 and the outflow portion 13 is input, and for transmitting the power input to the input portion to each caulking portion 17. A transmission mechanism 20 and a booster mechanism 21 for increasing the power in the process in which the power is transmitted to each caulking portion 17 by the transmission mechanism 20 are provided.

  In the illustrated example, the pedestal 16 includes a rectangular top plate 22 and a pair of leg members 23 extending below the top plate 22 from a pair of short edge portions 22a facing each other.

  One of the four corner portions 22b of the top plate 21 is provided with a plate-like placement portion 24 on which the input portion 19 is placed.

  In the illustrated example, each leg member 23 has a plate shape, and is arranged so as to extend along the short edge portions 22a facing each other in the longitudinal direction of the top plate 22 and to be parallel to each other.

  Each clamp device 18 has a fixed portion 25 fixed to the top plate 22 and a movable portion 26 supported rotatably on the top plate 22 as will be described later.

  In the illustrated example, each fixing portion 25 is made of a plate member having a rectangular shape, and is arranged on the top plate 22 so that the longitudinal directions thereof coincide with each other and are spaced from each other. Further, in the illustrated example, each fixing portion 25 has one short edge that defines each corner portion 22b on which the placement portion 23 is provided, of each pair of short edge portions 22a of the top plate 22. It is being fixed to the top plate 22 so that it may protrude from the other short edge part 22a located in the opposite side to the part 22a.

  As shown in FIG. 3, one end portion 25a of each fixing portion 25 has one side located on the lower side as viewed in FIG. 1 of a pair of side edge portions 25b facing each other in the short side direction of the fixing portion 25. A cutout portion 27 for receiving the inflow portion 12 or the outflow portion 13 is formed in the edge portion 25b (FIG. 3 shows the fixing portion 25 disposed on the lower side as viewed in FIG. 1). Each notch 27 has a semicircular shape. The interval between the fixed portions 25 is set so that the interval between the centers of the notches 27 is substantially equal to the interval between the axes of the inflow portion 12 and the outflow portion 13. Thereby, the outflow part 13 can be received in the other notch part 27 in a state where the inflow part 12 is received in one notch part 27.

  Each fixed portion 25 is formed with a protruding portion 28 protruding from the one side edge portion 25b between the one end portion 25a and the other end portion 25c.

  In the example shown in FIG. 1, each movable part 26 is made of a plate member having a rectangular shape. Each movable portion 26 is arranged on the top plate 22 so that the longitudinal direction thereof coincides with the longitudinal direction of each fixed portion 25 and the one end portion 26b protrudes from the other short edge portion 22a of the top plate 22. Yes.

  As shown in FIG. 3, a protruding portion 29 that overlaps the protruding portion 28 of each fixed portion 25 is formed on one side edge portion 26 a of the pair of side edge portions 26 a that face each other in the short side direction of each movable portion 26. (The movable part 26 arrange | positioned in FIG. 3 at the downward side seeing in FIG. 1 is shown.). A shaft member 30 is provided between the movable portion 26 and the fixed portion 25 of each clamp device 18 so as to penetrate the projecting portions 28 and 29 in the vertical direction of the base 16. Thus, each movable portion 26 is supported by the shaft member so as to be rotatable around the shaft member 30.

  Each movable portion 26 has an end surface 26c of the one side edge portion 26a at each one end portion 26b so as to face an end surface 25d of the one side edge portion 25b at one end portion 25a of each fixed portion 25, respectively. A step portion (not shown) is formed. Thereby, the end surface 26c of each one end part 26b can contact | abut to the end surface 25d of each fixed part 25 by rotation of each movable part 26, respectively.

  A notch that sandwiches the inflow portion 12 or the outflow portion 13 in one end portion 26b of each movable portion 26 in cooperation with the notch portion 27 of the fixed portion 25 in a state where the end surface 26c is in contact with the end surface 25d of each fixed portion 25. The portion 32 is formed in alignment with the cutout portion 27 of the fixed portion 25. That is, each notch part 27 and 32 comprises the clamping part which clamps the inflow part 12 and the outflow part 13 which are respectively connection parts, respectively, and the fixing | fixed part 25 and the movable part 26 of each clamp apparatus 18 are clamping parts, respectively. The clamping member which has the notches 27 and 32 is comprised.

  In the illustrated example, each of the notches 27 and 32 sandwiches the portions of the inflow portion 12 and the outflow portion 13 except for the enlarged diameter portions 12b and 13b. Thereby, the heat exchanger 11 is maintained in a state in which the diameter-increasing portions 12b and 13b of the inflow portion 12 and the outflow portion 13 protrude upward from the fixed portions 25 and the movable portions 26, respectively. Moreover, since each notch part 27 and 32 clamps the part except the diameter-increasing parts 12b and 13b of the inflow part 12 and the outflow part 13, respectively, the inflow part 12 and the outflow part 13 are between both notch parts 27 and 32, respectively. In the state of being sandwiched between, the inflow portion 12 and the enlarged diameter portions 12 and 13b of the outflow portion 13 engage with the fixed portions 25 and the movable portions 26 from above, respectively. Thereby, the inflow part 12 and the outflow part 13 received in both the notches 27 and 32 are prevented from falling off between the notches 27 and 32, respectively.

  Further, in the illustrated example, the protrusions of the fixed portions 25 and the movable portions 26 from the other short edge portion 22a of the top plate 22 are as shown in FIG. The size is set such that the inflow portion 12 and the outflow portion 13 can be received between the notches 27 and 32 in a state where the outer surface 23a of the member 23 is in contact.

  Furthermore, in this embodiment, an operating mechanism 33 for operating each movable part 26 is provided on the top plate 22.

  The operating mechanism 33 includes a connecting member 34 that connects the movable parts 26 to each other at the other end 26d, a crank-shaped crank member 35, and a first operating lever 36.

  The connecting member 34 has a rod shape as a whole. One end portion 34a of the connecting member 34 is connected to the other end portion 26d of one movable portion 26 disposed on the upper side in FIG. 1 through a shaft member 37 provided so as to extend in the vertical direction of the base 16. It is connected to one movable part 26. Further, the other end 34 b of the connecting member 34 is connected to the other movable portion 26 via a shaft member 38 that is provided at the other end 26 d of the other movable portion 26 so as to extend in the vertical direction of the pedestal 16. ing. Thereby, the connecting member 34 can be rotated around each of the shaft member 37 and the shaft member 38. The length dimension of the connecting member 34 is equal to the distance between the shaft members 37 and 38 in a state where the movable portions 26 are parallel to each other.

  The crank member 35 is supported by the other movable portion 26 at one end portion 35a via a shaft member 38 provided at the other end portion 26d of the other movable portion 26 so as to be rotatable around the shaft member. ing.

  The first operating lever 36 has a rod shape as a whole. One end portion 36a of the first operation lever 36 is located on the opposite side to one long edge portion 22c that defines the corner portion 22b provided with the placement portion 23 among the pair of long edge portions 22c of the top plate 22. The other long edge portion 22 c is attached to the top plate 22 via a shaft member 39 provided so as to extend in the vertical direction of the pedestal 16. Thereby, the first operation lever 36 can be rotated around the shaft member 39.

  A connecting portion 40 that protrudes from the one end portion in a direction orthogonal to the longitudinal direction of the first operating lever 36 and to which the other end portion 35b of the crank member 35 is connected is formed at one end portion 36a of the first operating lever 36. Has been. The connecting portion 40 is provided with a shaft member 41 extending in the vertical direction of the base 16. The other end portion 35b of the crank member 35 is connected to the first operation lever 36 by being supported by the shaft member 41 so as to be rotatable around the shaft member.

  As shown in FIG. 4, the end face 26c of each movable part 26 is separated from the end face 25d of each fixed part 25 at a maximum interval, that is, each movable part 26 is in the initial rotation position. When one operation lever 36 is rotated around the shaft member 39 in the clockwise direction as viewed in FIG. 4, the shaft member 41 provided in the connection portion 40 according to the rotation angle of the first operation lever 36. Moves toward the outside of the top plate 22 while drawing an arc around the shaft member 39. At this time, the crank member 35 has a rotational force that causes the rotational force of the first operating lever 36 to rotate around the shaft member 38 provided on the other end 26d of the other movable portion 26. 4 acts as a pulling force pulling the member 35 downward as viewed in FIG. Further, the tensile force acting on the crank member 35 acts on the other end portion 34b of the connecting member 34 through the shaft member 38 as a pulling force that moves the connecting member 34 along its longitudinal direction. When the pulling force acts on the connecting member 34, the pulling force causes the shaft members 37, 38 to act as rotational forces that rotate the movable portions around the shaft member 30 from the connecting member 34 to the movable portions 26. Act through. As a result, the movable portions 26 rotate integrally with each other in a direction in which the end surfaces 26c approach the end surfaces 25d of the fixed portions 25, respectively. At this time, as described above, the length dimension of the connecting member 34 is equal to the interval between the shaft members 37 and 38 in a state where the movable portions 26 are parallel to each other. The end surfaces 26 of both movable portions 26 are in contact with the end surfaces 25d of the respective fixed portions 25 almost simultaneously.

  As shown in FIG. 5, the two sets of caulking portions 17 each have a first caulking claw member 42 and a second caulking claw member 43 (in FIG. 5, they are arranged on the lower side as viewed in FIG. 1). The caulking part is shown.)

  In the illustrated example, each first caulking claw member 42 has an elongated plate shape as a whole. At one end portion 42a of each first caulking claw member 42, a claw portion 44 for sandwiching the inflow portion 12 or the outflow portion 13 for caulking is formed.

  Each nail | claw part 44 is formed by notching the side edge part in the one end part 42a of each 1st crimping claw member 42 in circular arc shape, respectively.

  Of the first caulking claw members 42, one of the first caulking claw members 42 has a claw portion 44 corresponding to the cutout portion 32 of one movable portion 26 arranged on the upper side as viewed in FIG. Are arranged so as to overlap the movable part.

  Further, the one first caulking claw member 42 is rotatable about the pivot through a pivot 45 provided on the movable portion 26 so as to extend in the vertical direction of the base 16. It is supported by the movable part 26. As a result, the pivot 45 moves so as to draw an arc centered on the shaft member 30 when the one movable portion 26 rotates, so that the one first caulking claw member 42 is moved to the one movable portion. With the rotation of 26, it rotates around the shaft member 30 integrally with the movable part.

  The other first caulking claw member 42 is disposed so as to overlap the fixing portion so that the claw portion 44 corresponds to the cutout portion 27 of the one fixing portion 25 arranged on the lower side as viewed in FIG. Yes. Further, the other first caulking claw member 42 is rotatable about the pivot through a pivot 46 provided on the one fixing portion 25 so as to extend in the vertical direction of the base 16. It is supported by the fixing portion 25.

  The claw portions 44 of the first caulking claw members 42 rotate around the pivots 45 and 46, respectively, so that the diameter of the inflow portion 12 or the outflow portion 13 held by the corresponding clamp device 18 is increased. It can contact | abut to part 12b, 13b.

  Each of the second caulking claw members 43 has an elongated plate shape as a whole in the illustrated example. As shown in FIG. 5, a claw portion 31 for sandwiching the inflow portion 12 or the outflow portion 13 is provided at one end portion 43a of each second caulking claw member 43, as in the first caulking claw member 42. Is formed.

  Each nail | claw part 31 is formed by notching the side edge part in the one end part 43a to circular arc shape similarly to the nail | claw part 44 of each 1st crimping claw member 42, respectively.

  One second caulking claw member 43 among the second caulking claw members 43 corresponds to the cutout portion 27 of the other fixing portion 25 whose claw portion 31 is disposed on the upper side as viewed in FIG. In this manner, they are arranged so as to overlap the fixed portion. Further, the one second caulking claw member 43 has the claw portion 31 connected to the one first caulking claw via a pivot 47 provided on the other fixing portion 25 so as to extend in the vertical direction of the base 16. The member 42 is supported by the other fixed portion 25 so as to be rotatable around the pivot 47 in a direction approaching and separating from the claw portion 44 of the member 42.

  The other second caulking claw member 43 is disposed so as to overlap the movable portion so that the claw portion 31 corresponds to the cutout portion 32 of the other movable portion 26 disposed on the lower side as viewed in FIG. Yes. Further, the other second caulking claw member 43 has the claw portion 31 connected to the other first caulking claw via a pivot 48 provided on the other movable portion 26 so as to extend in the vertical direction of the base 16. The member 42 is supported by the other movable portion 26 so as to be rotatable around the pivot 48 in a direction approaching and separating from the claw portion 44 of the member 42. As a result, the pivot 48 moves so as to draw an arc centered on the shaft member 30 when the other movable portion 26 rotates, so that the other second caulking claw member 43 is moved to the other movable portion. With the rotation of 26, it rotates around the shaft member 30 integrally with the movable part.

  The claw portions 31 of the second caulking claw members 43 are rotated around the pivots 47 and 48, respectively, so that the diameter of the inflow portion 12 or the outflow portion 13 held by the corresponding clamp device 18 is increased. It can contact | abut from the opposite side to the nail | claw part 44 side of each 1st crimping claw member 42 to the parts 12b and 13b.

  In the illustrated example, each second caulking claw member 43 includes a portion supported by one end 43a and each pivot 47, 48, and a portion extending along the first caulking claw member 42 and the other end 43b. A refracting portion 49 is formed between the first caulking claw member 42 and a portion extending along the first caulking claw member 42, so that the claw portions 44 and 46 of both the caulking claw members 43 caulk the inflow portion 12 and the outflow portion 13, respectively. In this state, as shown in FIG. 5, the portion including the other end portion 43 b is separated from the first caulking claw member 42.

  In a state in which each movable portion 26 is in a rotational position that sandwiches the inflow portion 12 or the outflow portion 13, the one first caulking claw member 42 and the other second caulking claw member 43 are shown in FIG. As shown, the initial positions at which the claw portions 44 and 31 are separated from the inflow portion 12 or the outflow portion 13 and the other end portions 42b and 43b of the first and second caulking claw members 42 and 43 are close to each other. Smelled.

  As shown in FIG. 5, the pivot shafts 45, 46, 47, and 48, which are the pivot shafts of the first and second crimping claw members 42 and 43, respectively, have the pivot shaft and the respective crimping claws provided with the pivot shaft. The pivots 45, 46, 47, 48 and the claw portions 44, 31 of the caulking claw members 42, 43 to which the pivots correspond respectively than the distance between the other ends 42b, 43b of the members 42, 43. It arrange | positions in the position where the space | interval becomes large.

  Further, as shown in FIG. 3, the pivot shafts 45, 46, 47, and 48 are respectively connected to the caulking claw members 42 and 43 rather than the shaft members 30 that are the pivot shafts of the movable portions 26 of the clamp devices 18. It arrange | positions at the edge parts 42b and 43b side.

  Further, in the illustrated example, the size of the space between each other end 42 b of each first caulking claw member 42 and the pivots 45, 46 provided in each of the first caulking claw members 42, The distances between the respective other end portions 43b and the pivots 47 and 48 provided in the respective other end portions 43b are equal to each other, and are provided in the respective claw portions 44 of the respective first caulking claw members 42. The size of the space between the pivot shafts 45 and 46 is equal to the size of the space between the respective claw portions 31 of the second caulking claw members 43 and the pivot shafts 47 and 48 provided respectively.

  In the example illustrated in FIG. 1, the input unit 19 includes a rotating body 50. The rotating body 50 has a disk shape, and is disposed at substantially the center of the mounting portion 24. A rotating shaft 51 of the rotating body is attached to the center of the rotating body 50.

  The rotating body 50 is provided with a pair of shaft members 55 and 62 in addition to the rotating shaft 51. In the example shown in the figure, the shaft members 55 and 62 are arranged such that their respective axis lines are parallel to the axis line of the rotating shaft 51 and are spaced from each other in the radial direction of the rotating body 50 from the rotating shaft 51. The shaft members 55 and 62 are disposed on the opposite sides with respect to the shaft member 51.

  Further, the rotating body 50 is provided with a first support member 52 and a second support member 53 for supporting the rotating body.

  The first support member 52 is disposed above the rotating body 50 and extends from the rotating shaft 51 outward in the radial direction of the rotating body 50. One end 52 a of the first support member 52 is rotatably supported by the rotation shaft 51. The other end 52 b of the first support member 52 is disposed on the mounting portion 24 so as to extend in the vertical direction of the base 16 below the rotating body 50 and on the mounting portion 24. The first support shaft 54 that is fixed is rotatably supported. Thereby, the rotating body 50 can swing around the support shaft 54 along the upper surface 24 a of the mounting portion 24 by the first support member 52 rotating around the first support shaft 54. , And can be rotated around the rotation shaft 51.

  The second support member 53 is disposed below the rotating body 50 and extends in a clockwise direction as viewed in FIG. 1 along the circumferential direction of the rotating body 50 from a shaft member 55 provided on the rotating body 50. Furthermore, it extends outward of the rotating body 50 along the tangential direction of the rotating body 50 and forms a crank shape as a whole. One end 53 a of the second support member 53 is rotatably supported by the shaft member 55. The other end 53 b of the second support member 53 is disposed on the mounting portion 24 so as to extend in the vertical direction of the base 16 on the left side of the rotating body 50 as viewed in FIG. 1 and is fixed to the mounting portion 24. The second support shaft 56 is rotatably supported.

  In an initial state in which the rotating body 50 is not receiving input, as shown in FIG. 1, the shaft member 55 is positioned to the right of the shaft member 62, and the rotating body 50 has a swing range around the first support shaft 54. Located on the leftmost in

  The booster mechanism 21 includes a second operation lever 57 provided on the rotating body 50 for rotating the rotating body.

  The second operation lever 57 is disposed above the first support member 32 and has a length dimension sufficiently larger than the radius of the rotating body 50. One end 57 a of the second operation lever 57 is fixed to the rotating shaft 51. In a state where the rotating body 50 is in the initial state, the second operation lever 57 is placed at a rotation position extending from the rotating body 50 in the right direction as viewed in FIG. 1 as shown in FIG. The boosting action of the second operating lever 57 will be described in detail later.

  The transmission mechanism 20 includes a link mechanism 58 connected to the rotating body 50, and the other end portions 42b and 43b of the first and second caulking claw members 42 and 43 by a force transmitted from the rotating body 50 via the link mechanism. And a pushing portion 59 pushed in between.

  The link mechanism 58 includes a first link member 60 connected to the rotating body 50 and a second link member 61 that couples the first link member and the pushing portion 59 to each other.

  The first link member 60 is composed of the same member as the second support member 53, and is viewed from the shaft member 62 provided on the rotating body 50 along the circumferential direction of the rotating body 50 in FIG. It is arranged so as to extend in the rotating direction and further extend outward of the rotating body 50 along the tangential direction of the rotating body 50. One end 60a of the first link member 60 is rotatably supported by the shaft member 62. That is, the one end 60 a of the first link member 60 is supported by the rotating body 50 at a position shifted from the rotating shaft 51.

  The second link member 61 has a rod shape, and is disposed so as to extend downward from the other end portion 60 b of the first link member 60 toward the top plate 22 as viewed in FIG.

  One end portion 61a of the second link member 61 is rotatable around a shaft member 63 provided on the other end portion 60b of the first link member 60 so as to extend in the vertical direction of the base 16. It is supported.

  In the illustrated example, a support portion 64 that supports the second link member 61 is provided on the placement portion 24. The support portion 64 is a base portion provided on an edge portion 24b located on the top plate 22 side among a pair of edge portions 24b facing each other in the width direction of the placement portion 24 (the vertical direction when viewed in FIG. 1). 65 and a shaft member 66 provided at the base and extending in the vertical direction of the pedestal 16. The second link member 61 is supported by the shaft member 66 so as to be rotatable around the shaft member at the center in the longitudinal direction.

  In the state where the second operation lever 57 is in the initial position shown in FIG. 1, the second link member 61 is rotated in such a manner that the other end portion 61 b is positioned on the rightmost side within the rotation range around the shaft member 66. Move to the moving position.

  A shaft member 67 extending along the vertical direction of the pedestal 16 is provided at the other end portion 61 b of the second link member 61.

  The pushing portion 59 includes a pair of pushing members 68 that are pushed between the other end portions 42 b and 43 b of the first and second caulking claw members 42 and 43.

  In the illustrated example, each pusher member 68 is formed of a rectangular plate member, and the longitudinal direction of each pusher member 68 is aligned with the longitudinal direction of the top plate 22, so that the pusher members 68 are positioned on the top plate 22 more than the caulking claw members 42 and 43. The top plate 22 is disposed on the one short edge portion 22a side so as to correspond to the caulking portions 17 respectively.

  Each pushing member 68 passes through the center between the other end portions 42b and 43b of the caulking claw members 42 and 43 at the initial position of the caulking portion 17 corresponding to the center line along the longitudinal direction. As described above, the top plate 22 is disposed at a distance from each other in the direction orthogonal to the longitudinal direction.

  The distance between the center lines along the longitudinal direction of each pushing member 68 is such that each clamping device 18 sandwiches the inflow portion 12 and the outflow portion 13, that is, the first and second caulking claw members 42, 43. In a state in which almost no gap is formed between the other end portions 42b and 43b, between the other end portions 42b and 43b of the first and second caulking claw members 42 and 43 in one set and the second set in the other set. The distance between the other end portions 42b and 43b of the first and second caulking claw members 42 and 43 is set to be substantially equal.

  Further, as shown in FIG. 4, the booster mechanism 21 according to the present invention is provided at one end 68a which is a pushing end located on the first and second caulking claw members 42 and 43 side of each pushing member 68. A tapered portion 69 that is formed and tapers toward the first and second caulking claw members 42 and 43 is further provided.

  Slides that slide on the other end portions 42b and 43b of the caulking claw members 42 and 43, respectively, on the side surfaces facing each other in the width direction perpendicular to the longitudinal direction of the pushing members 68 of the tapered portions 69, respectively. A surface 70 is formed.

  As shown in FIG. 6, the interval between the sliding surfaces 70 gradually decreases toward the caulking claw members 42 and 43. In the illustrated example, each sliding surface 70 is symmetrical with respect to a line L that passes through the center in the width direction of each pressing member 68 and extends in the longitudinal direction of each pressing member 68.

  In addition, the angle of each sliding surface 70 with respect to the longitudinal direction of each pushing member 68 decreases from the distal end 69a of the tapered portion 69 toward the proximal end 69b in the illustrated example.

  In the illustrated example, the maximum width dimension of each tapered portion 69 is caulked at the inflow portion 12 and the outflow portion 13 with a predetermined caulking amount so that the claw portions 44 and 31 of the caulking claw members 42 and 43 are respectively described later. The distance between the other end portions 42b and 43b at the rotational position of the caulking claw members 42 and 43 is substantially equal.

  The boosting action of each tapered portion 69 will be described in detail later.

  As shown in FIG. 1, a plate-like connecting member 71 that connects the pressing members 68 to each other is provided at the other end 68 b of each pressing member 68.

  In the illustrated example, a guide member for guiding each pushing member 68 toward a predetermined pushing position between the first and second caulking claw members 42 and 43 is provided. In the illustrated example, the guide member is configured by a rail member 72 that extends linearly along the longitudinal direction of the top plate 22, and the connecting member 71 has an engaging portion (not shown) that engages with the rail member 72. Is formed. By engaging the engaging portion of the connecting member 71 with the rail member 72, the connecting member 71 can move linearly along the longitudinal direction of the top plate 22, and accordingly, the push-in members 68 connected by the connecting member 71. Can move linearly along the longitudinal direction of the top plate 22.

  The connecting member 71 is provided with a connecting member 73 that extends from the connecting member 71 in a direction away from each pushing member 68 and is connected to the other end portion 61 b of the second link member 61.

  The distal end portion 73 a of the connection member 73 is supported by a shaft member 67 provided at the other end portion 61 b of the second link member 61 so as to be rotatable around the shaft member.

  The length dimension of the connecting member 73 is such that each pushing member 68 is in the retracted position farthest from each caulking claw member 42, 43, and the connecting member 71 and the second link placed in the initial position described above. The size is set such that the other end portion 61b of the member 61 can be connected to each other.

  In order to fix the pipe members 14 inserted into the inflow portion 12 and the outflow portion 13 of the heat exchanger 11 to the inflow portion 12 and the outflow portion 13 respectively, the caulking jig 10 is used to connect the inflow portion 12 and the outflow portion 13 to each other. When caulking, first, as shown in FIG. 4, the inflow portion 12 and the outflow portion 13 are respectively connected to the clamp devices 18 in a state where the housing 15 of the heat exchanger 11 is in contact with the outer surface 23 a of the leg member 23. As shown in FIG. 1, each of the inflow portions 12 is inserted between the movable portions 26 and the notches 27 and 32 of the fixed portions 25 and operated by the first operating lever 36 as shown in FIG. And the heat exchanger 11 is hold | maintained by pinching the outflow part 13. FIG.

  At this time, by bringing the housing 15 into contact with the outer surface 23a of the leg member 23, the inflow portion 12 and the outflow portion 13 are sandwiched between the cutout portions 27 and 32 of each movable portion 26 and each fixed portion 25. The movement of the housing 15 toward the outer surface 23a of the leg member 23 is restricted.

  Accordingly, the housing 15 moves toward the outer surface 23a of the leg member 23 in a state where the inflow portion 12 and the outflow portion 13 are sandwiched between the notch portions 27 and 32. It is possible to reliably prevent the caulking position of the outflow portion 13 from deviating from an appropriate caulking position.

  Further, by bringing the housing 15 into contact with the outer surface 23a of the leg member 23, the position of the housing 15 in the direction toward the outer surface 23a of the leg member 23 is positioned.

  As a result, the housing 15 is moved to the outer surface 23a of the leg member 23 and moved in the outer surface, so that the inflow portion 12 and the outflow portion 13 are disposed at proper caulking positions. 15 can be easily positioned.

  Next, as shown in FIG. 7A, the second operating lever 57 is placed on the other end 57b of the second operating lever 57 with the second operating lever 57 in the initial position. A force for rotating the rotating shaft 51 in the clockwise direction as viewed in FIG.

  In the state where the second operating lever 57 is in the initial position, that is, in the state where the rotational force is not input to the rotating body 50, each pushing member 68 is moved to the retracted position as shown in FIG. Smelled.

  The force acting on the other end 57 b of the second operating lever 57 is input from the second operating lever 57 to the rotating body 50 through the rotating shaft 51 as a rotating force for rotating the rotating body around the rotating shaft 51. Is done. Thereby, the rotating body 50 rotates integrally with the second operation lever 57 around the rotating shaft 51.

  At this time, the shaft member 55 provided on the rotating body 50 moves to the left as viewed in FIG. 1 along the circumferential direction of the rotating body 50 as the rotating body 50 rotates. , A part of the rotational force of the rotating body 50 acts via the shaft member 55 as a rotational force that rotates the second support member 53 around the second support shaft 56. A part of this acts as a moving force for moving the second support member 53 in the left direction via the shaft member 55.

  However, since the other end 53b of the second support member 53 is supported by the second support shaft 56 fixed to the mounting portion 24 as described above, the second support member 53 is moved in the left direction. Accordingly, the rotating body 50 receives a reaction force from the second support member 53 in the direction opposite to the direction in which the moving force acts. Accordingly, since the rotating body 50 is allowed to swing around the first support shaft 54, the first support shaft is moved in the right direction as viewed in FIG. 1 by the reaction force received from the second support member 53. It swings around 54 at a swing angle corresponding to the moving distance of the shaft member 55.

  Further, when the rotating body 50 rotates, the shaft member 62 provided on the rotating body 50 moves to the right as viewed in FIG. 1 along the circumferential direction of the rotating body 50 as the rotating body 50 rotates. A part of the rotational force of the rotating body 50 acts on the one end portion 60 a of the first link member 60 as a rotational force that rotates the first link member 60 around the shaft member 63 via the shaft member 62. Further, part of the rotational force of the rotating body 50 acts via the shaft member 62 as a moving force that moves the first link member 60 in the right direction. Thereby, the 1st link member 61 moves rightward toward the position shown in FIG.7 (b) from the initial position shown to Fig.7 (a).

  Since the length dimension of the second operation lever 57 is sufficiently larger than the diameter of the rotating body 50 as described above, the length dimension of the second operation lever 57 is one end of the first link member 60. The distance between the shaft member 62 on which the portion 60 a is supported and the rotating shaft 51 of the rotating body 50 is larger. That is, as shown in FIG. 8, when the other end 57b of the second operating lever 57 is the force point A1, the rotation shaft 51 of the rotating body 50 is the fulcrum B1, and the shaft member 62 is the action point C1, the force point A1 and The interval between the fulcrum B1 is larger than the interval between the fulcrum B1 and the action point C1.

  Therefore, the distance between the force point A1 and the fulcrum B1, that is, the length dimension of the second operating lever 57 is L1, the distance between the fulcrum B1 and the action point C1, that is, the distance between the rotary shaft 51 and the shaft member 62 is L2, and the force point A1. If the magnitude of the force acting on the other end 57b of the second operation lever 57 is F, the force R1 output to the shaft member 62, which is the point of action C1, is obtained by the following equation.

R1 = (L1 / L2) F (1)
In the illustrated example, L1 is 350.0 [mm], L2 is 20.0 [mm], and F is 10 [kgf]. Substituting these values into equation (1) results in R1 = 175 [kgf].

  Therefore, the force F input to the other end portion 57b of the second operation lever 57 is transmitted in the process of being transmitted from the second operation lever 57 to the shaft member 62 via the rotating shaft 51 and the rotating body 50 in accordance with the so-called lever principle. After being increased, it is output from the shaft member 62. Accordingly, a force larger than the force input to the rotating body 50 acts on the one end portion 60 a of the first link member 60 via the shaft member 62.

  Further, as shown in FIGS. 9A and 9B, the shaft member 62 provided on the rotating body 50 is a force point A2, the rotating shaft 51 of the rotating body 50 is a fulcrum B2, and the first link member 60 is Assuming that the shaft member 63 provided at the other end 60b is an action point C2, the force R2 output to the shaft member 63 as the action point C2 can be obtained as described below.

  A resistance force generated in the first link member 60 when the force R1 is applied to the shaft member 62 that is the force point A2 is defined as Q, and a line segment that connects the force point A2 and the action point C2 is connected to the fulcrum B2 and the action point C2. Assuming that the angle formed by the line segment is α, the force R2 output to the action point C2 is expressed by the following equation.

R2 = Qcosα (2)
Here, an interval between the force point A2 and the fulcrum B2 is L3, an interval between the force point A2 and the action point C2 is L4, and a line segment connecting the force point A2 and the fulcrum B2 with each other and a line segment connecting the fulcrum B2 and the action point C2 with each other L3sinθ = L4sinα where θ is the angle formed by. From this, sinα = (L3 / L4) sinθ, and as is well known, sinα ² + cosα ² = 1.
cosα = [1-{(L3 / L4) sinθ} ² ] ^(1/2) (3)
Is obtained.

Further, if the reaction force component that balances R1 among the components of the drag Q is Qf, and the angle formed by Q and R1 is β, then Qf = Qcosβ = R1.
Q = R1 / cosβ (4)
It becomes.

Here, if an angle formed by a line segment connecting the force point A2 and the fulcrum B2 and a line segment connecting the force point A2 and the action point C2 is γ, β = (π / 2) −γ = α + θ− (π / 2) )
cosβ = sin (α + θ) (5)
It becomes. Therefore, by substituting Equations (3) to (5) into Equation (2), the force R2 output to the action point C2 is
R2 = {F1 / sin (α + θ)} · [1-{(L3 / L4) sinθ} ² ] ^(1/2) (6)
It is represented by

  In the illustrated example, L3 is 20.00 [mm], L4 is 90.61 [mm], α is 6.22 °, θ is 29.40 °, and F1 is as described above. 175 [kgf]. Substituting these values into equation (6) results in R2 = 298.913 [kgf].

  Accordingly, the force R1 output to the shaft member 62 provided in the rotating body 50 is increased in the process of being transmitted from the one end 60a of the first link member 60 to the other end 60b. From the shaft member 63 of the end portion 60b, a force larger than the force that the one end portion 60a of the first link member 60 receives from the rotating body 50 is output.

  The force output from the shaft member 63 of the other end portion 60b of the first link member 60 is applied to one end portion 61a of the second link member 61 connected to the first link member 60 via the shaft member. This acts as a rotational force that rotates the second link member 61 around the shaft member 66. As a result, the shaft member 67 provided at the other end 60b of the second link member 60 moves to the left as viewed in FIG. 1 so as to draw an arc centered on the shaft member 66.

  As described above, the second link member 61 is supported by the shaft member 66 so as to be rotatable around the shaft member at the longitudinal center portion thereof. Assuming that the shaft member 63 of 61a is the force point and the shaft member 67 of the other end 61b is the action point, the distance between the fulcrum and the force point is equal to the distance between the fulcrum and the action point. The force R2 acting on the one end 61a does not increase or decrease in the process of being transmitted from the one end to the other end 61b. Therefore, the force R2 is equal to the force R2 from the other end 61b of the second link member 61. Force is output.

  The force output from the second link member 60 is the second link member as a moving force that causes each pusher member 68 to move each pusher member along the rail member 72 toward each caulking claw member 42, 43. 60 through the connecting member 73 and the connecting member 71. Thereby, each pushing member 68 moves integrally along the rail member 72 toward each crimping claw members 42 and 43, respectively. That is, the rotational motion of the rotating body 50 is converted into the linear motion of each pushing member 68 via the link mechanism 58.

  Specifically, when the second operating lever 57 is turned from the turning position shown in FIG. 7A toward the turning position shown in FIG. By moving toward the caulking portion 17, as shown in FIG. 10A, the portions at the tip 69 a of each sliding surface 70 of the tapered portion 69 of each pushing member 68 are respectively the first and the first caulking portions 17. It abuts on the other end portions 42b and 43b of the second caulking claw members 42 and 43, respectively.

  At this time, as described above, the center line along the longitudinal direction of each pushing member 68 corresponds to each other between the other end portions 42b and 43b of the caulking claw members 42 and 43 at the initial position of the caulking portion 17 respectively. Since each sliding surface 70 passes through the center and is symmetric with respect to the center line of each pushing member 68, each sliding surface 70 is respectively connected to the other end portion 42 of each caulking claw member 42, 43 of each caulking portion 17. 43 abuts almost simultaneously.

  The force input to the connection member 73 from the second link member 61 is input to each pusher member 68 by being divided into two equal parts, and each caulking from the tapered portion 69 of each pusher member 68 via each sliding surface 70. Input to the other end portions 42b and 43b of the first and second caulking claw members 42 and 43 of the portion 17, respectively.

  At this time, as described above, each sliding surface 70 is symmetrical with respect to a straight line passing through the center in the width direction of each pushing member 68 and along the longitudinal direction of each pushing member 68. The magnitudes of the forces acting on the other end portions 42b and 43b of the caulking claw members 42 and 43 from the respective sliding surfaces 70 are equal to each other.

  Further, the force acting on the other end portions 42b and 43b of the first and second caulking claw members 42 and 43 from the sliding surfaces 70 of the pushing members 68 causes the caulking claw members 42 and 43 to both of them. The claw portions 44 and 31 act as forces that rotate around the pivots 45, 46, 47, and 48 in the direction in which they approach each other.

  Further, when the second operation lever 57 is turned from the turning position shown in FIG. 7B toward the turning position shown in FIG. 7C, the first link member 61 is moved to the position shown in FIG. It is displaced in the right direction from the position shown in b) toward the position shown in FIG. At this time, each taper part 69 slides each sliding surface 70 on the other end part 42b, 43b of each caulking claw member 42, 43, respectively, while the other end part 42b of each caulking claw member 42, 43, respectively. 43b, and moves from the position shown in FIG. 10B to the position shown in FIG. 10D through the position shown in FIG. 10C.

  As a result, the space between the other end portions 42b and 43b of the first and second caulking claw members 42 and 43 of each caulking portion 17 is expanded.

  As shown in FIG. 6, the force R3 acting on the other end portions 42b and 43b of the first and second caulking claw members 42 and 43 from the respective sliding surfaces 70 is applied to each caulking claw member 42 and 43, respectively. When the angle of each sliding surface 70 with respect to the center line of each pushing member 68 at the contact point of the sliding surface 70 is θ, it can be obtained as follows.

  The force input to each of the first and second caulking claw portions 42 and 43 of each caulking portion 17 from each pushing member 68 is Fa, and the drag force that each pushing member 68 receives from each of the caulking claw members 42 and 43, respectively. Assuming that Fb is satisfied, the drag force Rf from each caulking portion 17 is Rf = 2 · Fbsinθ = Fa.

  Here, since Fa = (1/2) · R2, Fb = Fa / 2sin θ. Further, since Fb is equal to the force R3 acting on the other end portions 42b and 43b of the first and second caulking claw members 42 and 43 from the sliding surfaces 70, Fb = R3.

  Therefore, from the above, R3 can be represented by the following equation.

R3 = {(1/2) R2} / 2sinθ (7)
The angle θ of each sliding surface 70 at the contact position shown in FIG. 10A is θ = 30 ° in the illustrated example, and R2 is R2 = 298.913 [kgf] as described above. Therefore, by substituting these values into Equation (7), R3 = 149.457 [kgf].

  In addition, the angle θ of each sliding surface 70 at the contact position in FIG. 10B is set to 15 ° in the illustrated example. Accordingly, in the state shown in FIG. 10B, the force R3 acting on the other end portions 42b and 43b of the first and second caulking claw members 42 and 43 from the sliding surfaces 70 is obtained from the equation (7). , R3 = 288.728 [kgf].

  Further, the angle θ of each sliding surface 70 at the contact position in FIG. 10C is set to 10 ° in the illustrated example. Accordingly, in the state shown in FIG. 10C, the force R3 acting on the other end portions 42b and 43b of the caulking claw members 42 and 43 from each sliding surface 70 is R3 = 430.343 according to the equation (7). [Kgf].

  Further, the angle θ of each sliding surface 70 at the contact position in FIG. 10D is set to 5.5 ° in the illustrated example. Therefore, in the state shown in FIG. 10 (d), the force R3 acting on the other end portions 42b and 43b of the caulking claw members 42 and 43 from the sliding surfaces 70 is R3 = 79.672 from the equation (7). [Kgf].

  In the illustrated example, when the pushing members 68 are respectively in the state shown in FIG. 10B, the claw portions 44 and 31 of the first and second caulking claw members 42 and 43 are respectively inflow portions 12. And it contacts the enlarged diameter portions 12b, 13b of the outflow portion 13. Thereby, the diameter-increasing portions 12b and 13b of the inflow portion 12 and the outflow portion 13 are sandwiched between the claw portions 44 and 31 of the caulking claw members 42 and 43, respectively.

  Accordingly, as shown in FIGS. 10 (c) and 10 (d), the first and second caulking claws from the sliding surfaces 70 in a state where the push-in is further pushed in than the state shown in FIG. 10 (b). The force R3 acting on the other end portions 42b and 43b of the members 42 and 43 is output as a caulking force for caulking the inflow portion 12 and the enlarged diameter portions 12b and 13b of the outflow portion 13 from the caulking claw portions 42 and 43, respectively. This caulking force acts on the diameter-increasing portions 12b and 13b of the inflow portion 12 and the outflow portion 13 as a compressive force that compresses each of the diameter-increased portions from the both sides inward in the radial direction. Thereby, each enlarged diameter part 12b, 13b begins to deform | transform toward the pipe member 14 inserted in the inflow part 12 and the outflow part 13, respectively.

  Here, as described above, in each of the first and second caulking claw members 42, 43, the pivots 45, 46 are more than the distances between the pivots 45, 46, 47, 48 and the other ends 42b, 43b. , 47, 48 and the claw portions 44, 31 are large, so that the caulking claw members 42, 43 are shown in FIG. 5 showing the pushing portion 17 arranged on the lower side as viewed in FIG. If the other end portions 42b and 43b of the first and second ends 42b and 43b are the force points A3, the pivots 46 and 48 are the fulcrums B3, and the claw portions 44 and 31 of the caulking claw members 42 and 43 are the action points C3, respectively, the force points A3 and B3 The interval between them becomes larger than the interval between the fulcrum B3 and the action point C3.

  Further, as described above, the distance between the other end portion 42b of each first caulking claw member 42 and the pivots 45, 46, and the other end portion 43b of each second caulking claw member 43 and the pivots 47, 48 are as follows. The distance between the pivots 45 and 46 of each first caulking claw member 42 and the claw part 44 and the pivots 47 and 48 of each second caulking claw member 43 and the claw part are equal to each other. Since the distance between the 31 is equal to each other, the relationship between the force point A3, the fulcrum B3, and the action point C3 in the caulking claw members 42 and 43 is the same.

  Accordingly, the distance between the force point A3 and the fulcrum B3, that is, the distance between the other end portions 42b, 43b of the caulking claw members 42, 43 and the pivots 46, 47 is L5, and the distance between the fulcrum B3 and the action point C3, Since the distance between each pivot 45, 46, 47, 48 and each claw 44, 31 is L6, and the magnitude of the force acting on the force point A3 is R3 as described above, from each claw 44, 31 The output caulking force R4 is obtained by the following equation.

R4 = (L5 / L6) R3 (8)
In the illustrated example, L5 is 150.0 [mm], and L6 is 43.78 [mm]. Therefore, for example, in a state where each pushing member 68 is in the state shown in FIG. 4D, since R3 is 779.672 [kgf] as described above, these values are expressed by Equation (8). When substituted, R3 = 2671.329 [kgf].

  Accordingly, the force R3 input from the pushing member 68 to the other end portions 42b and 43b of the caulking claw members 42 and 43 is transmitted to the claw portions 44 and 31 from the other end portions according to the principle of the lever. After being increased, it is output from each of the claw portions 44 and 31, respectively.

  As a result, a force larger than the force input to the other end portions 42b and 43b of the caulking claw members 42 and 43 can be output from the claw portions 44 and 31 of the caulking claw members 42 and 43, and the illustrated example Then, a force having a magnitude of about 270 times the magnitude of the force input to the other end portion 57 b of the second operation lever 57 is output from the claw portions 44 and 31 of the caulking claw members 42 and 43.

  In the state where the claw portions 44, 31 of the first and second caulking claw members 42, 43 are in contact with the enlarged diameter portions 12b, 13b of the inflow portion 12 and the outflow portion 13, respectively, the pushing members 68 are respectively shown in FIG. As shown in FIG. 10C and FIG. 10D, when the caulking claw members 42, 43 are pushed between the other end portions 42b, 43b, the pivots 45, 46, 47, 48, the distance between the pivots 45 and 47 of the first and second caulking claw members 42 and 43 of the one caulking portion 17 and the first and second caulking claws of the other caulking portion 17 respectively. Forces in the direction of widening the spaces between the pivots 46 and 48 of the members 42 and 43 act from the caulking claw members 42 and 43, respectively, and the movable portions 46 of the respective clamping devices 18 have their corresponding fixed portions. Each caulking nail has a force in the direction away from 45 Acting through the pivot shafts 45, 46, 47 and 48 from the timber 42, 43.

  At this time, for example, when the shaft member 30 of each clamping device 18 is arranged on the same line as each pivot 45, 46, 47, 48 of each caulking claw member 42, 43, or each movable part than each pivot 26, when the force described above is applied to each movable part 26 from each caulking claw member 42, 43 via each pivot 45, 46, 47, 48. The force acts as a rotational force that rotates each movable part 26 around the shaft member 30 in a direction in which each notch part 32 is separated from the notch part 27 of each fixed part 25. For this reason, the clamping force which acts on the inflow part 12 and the outflow part 13 from each notch part 27 and 32 of each fixed part 25 and each movable part 26 falls, and the inflow part 12 and the outflow part 13 holding position is an appropriate holding position. There is a risk of dislodging. When the holding position of the inflow portion 12 and the outflow portion 13 is deviated from the proper holding position, the relative position between the inflow portion 12 and the outflow portion 13 and the claw portions 44 and 31 of the caulking claw members 42 and 43 is shifted. The inflow portion 12 and the outflow portion 13 are displaced in the force received from the claw portions 44 and 31 of the caulking claw members 42 and 43, and the inflow portion 12 and the enlarged diameter portions 12b of the outflow portion 13 due to the caulking claw members 42 and 43, Deviation occurs between the caulking claw members 42 and 43 in the caulking degree of 13b.

  On the other hand, according to the present embodiment, as described above, the pivots 45, 46, 47, and 48 are caulked more than the shaft members 30 that are the rotation shafts of the movable parts 26 of the clamp devices 18. Since the claw members 42 and 43 are arranged on the other end portions 42 b and 43 b side, when the above-described force in the direction in which the movable portions 26 are separated from the fixed portions 45 acts on the movable portions 26, The acting force acts as a rotational force that rotates each movable part around the shaft member 30 in a direction approaching the notch 27 of each fixed part 25 to which each notch 32 corresponds.

  Thereby, the clamping force from each notch part 27 and 32 of each fixed part 25 and each movable part 26 to the inflow part 12 and the outflow part 13 can be heightened, and this clamping force does not fall. Therefore, it is possible to surely prevent the caulking claw members 42 and 43 from being displaced in the caulking degree of the inflow portion 12 and the enlarged diameter portions 12b and 13b of the outflow portion 13 by the caulking claw members 42 and 43. .

  After the second operation lever 57 is rotated to the rotation position shown in FIG. 7C, the second operation lever 57 is moved from the rotation position shown in FIG. 7C to the position shown in FIG. 7D. When the rotation operation is performed toward the first position, the first link member 61 is displaced rightward from the position illustrated in FIG. 7C to the position illustrated in FIG.

  At this time, each tapered portion 69 completely enters between the other end portions 42b and 43b of the caulking claw members 42 and 43, respectively, as shown in FIG. Thereby, the other end portions 42b and 43b of the first and second caulking claw members 42 and 43 of each caulking portion 17 are spaced apart by a distance d equal to the maximum width dimension of the tapered portion 69 of each pushing member 68. Leave each other.

  At this time, as described above, the maximum width dimension of each tapered portion 69 is such that the claw portions 44 and 31 of the caulking claw members 42 and 43 respectively caulk the inflow portion 12 and the outflow portion 13 with a predetermined caulking amount, respectively. Since the distance between the other end portions 42b and 43b at the rotational position of the caulking claw members 42 and 43 is approximately equal to each other, the tapered portions 69 are respectively connected to the other end portions 42b and 43b of the caulking claw members 42 and 43, respectively. As a result, the diameter-increasing portions 12b and 13b of the inflow portion 12 and the outflow portion 13 are inserted into the inflow portion 12 and the outflow portion 13 by plastic deformation as shown in FIG. The tube member 14 is crimped.

  Thereby, the pipe member 14 inserted in the inflow part 12 and the outflow part 13 is fixed to the inflow part 12 and the outflow part 13, respectively, and the caulking work of the enlarged diameter parts 12b and 13b of the inflow part 12 and the outflow part 13 is completed. To do.

  According to the present embodiment, as described above, the power for caulking the inflow portion 12 and the outflow portion 13 provided in the heat exchanger 11 is input to the rotating body 50 and to the rotating body. In the process of being transmitted by the link mechanism 58 and the pushing portion 59 of the transmission mechanism 20 to the first and second caulking claw members 42 and 43 for sandwiching the inflow portion 12 and the outflow portion 13 respectively. 21 and the taper portion 69 of each pushing member 68.

  From this, the magnitude of the force input to the second operating lever 57 to rotate the rotating body 50 in order to caulk the inflow portion 12 and the outflow portion 13 with the caulking claw members 42 and 43 is the inflow portion 12 and Even when the force required to caulk the outflow portion 13 is smaller, the power input to the second operating lever 57 is increased by the booster mechanism 21 to caulk the inflow portion 12 and the outflow portion 13. Sufficiently large force can be output from each caulking claw members 42 and 43 with a mechanical configuration rather than an electrical configuration.

  Thereby, since it is possible to use human power without using air as a power source for generating a large caulking force in the caulking jig 10, it is possible to electrically drive the caulking jig 10 using air. Electrical equipment such as a drive source, electrical wiring, and the like can be eliminated.

  Therefore, the manufacturing cost of the caulking jig 10 can be surely suppressed as compared with the conventional case of using an electrically controlled pneumatic power source.

  Further, since the caulking jig 10 can use a human power source without using an electrically controlled pneumatic power source, the caulking jig 10 can be installed in a unit assembly line in a later process. Therefore, it is not necessary to provide a space for performing the caulking work in a place different from the place where the unit assembly line is provided. As a result, it is possible to reliably prevent the conventional work space from being enlarged and the work balance from being deteriorated.

  Furthermore, by using the caulking jig 10 according to the present invention, the inflow portion 12 and the manufacturing space can be increased without incurring the manufacturing cost as much as when air is used as the power source, and without causing an increase in work space and a deterioration in work balance. Since the outflow part 13 can be fixed to the pipe member 14, it is not necessary to separately use a conventional fixing member in order to fix the inflow part 12 and the outflow part 13 to the pipe member 14. Thereby, since the number of parts does not increase, it is possible to reliably prevent an increase in manufacturing cost as in the prior art.

  Further, as described above, the distance between the sliding surfaces 70 formed in the tapered portion 69 of each pushing member 68 is gradually reduced toward the caulking claw members 42 and 43.

  From this, when each pushing member 68 is pushed between the other end portions 42b and 43b of each caulking claw members 42 and 43, the force inputted to each pushing member 68 is changed to each sliding portion 69. The force acting on the other end portions 42b and 43b of the caulking claw members 42 and 43 from the sliding surface 70 is applied to the other end portions 42b and 43b of the caulking claw members 42 and 43, respectively. Can be made larger than the force input to each pushing member 68 according to the so-called wedge principle, that is, depending on the angle of each sliding surface 70 with respect to the longitudinal direction of each pushing member 68.

  Thereby, the force input to the other end 57b of the second operation lever 57 is increased by the respective boosting action of the second operation lever 57 and the first link member 61, and further, After increasing due to the wedge effect of the tapered portion 69, the claw portions of the caulking claw members 42, 43 are used as a force for pushing the other end portions 42 b, 43 b of the caulking claw members 42, 43 between the other end portions. 44 and 31 can cause the inflow portion 12 and the outflow portion 13 to act as caulking forces, respectively.

  Further, when the pushing members 68 are pushed between the other end portions 42b and 43b of the caulking claw members 42 and 43, the sliding surfaces 70 are respectively connected to the other end portions 42b and 43b of the caulking claw members 42 and 43, respectively. Most of the force acting on the sliding surfaces 70 from the other end portions 42 b and 43 b of the caulking claw members 42 and 43 can be released in the direction along the sliding surfaces 70.

  Thereby, since each pushing member 68 can reduce the resistance force to the direction opposite to the advancing direction of each pushing member 68 received from the other end portions 42b and 43b of each crimping claw members 42 and 43, each crimping claw member The pushing members 68 can be smoothly pushed between the other end portions 42b and 43b of the pins 42 and 43, respectively.

  Further, the taper portion of each pushing member 68 is moved to the other side of each crimping claw member 42, 43 while sliding the sliding surface 70 of each pushing member 68 on the other end 42b, 43b of each crimping claw member 42, 43. By pushing between the end portions 42b and 43b, each sliding surface is moved between the other end portions 42b and 43b by the force acting on the other end portions 42b and 43b of the caulking claw members 42 and 43 from each sliding surface 70. It can be easily expanded with a size corresponding to the size of the interval between 70.

  Furthermore, as described above, the angle of each sliding surface 70 with respect to the traveling direction of each pushing member 68 is decreased from the distal end 69a of the tapered portion 69 toward the proximal end 69b.

  For example, in order to securely caulk the inflow portion 12 and the outflow portion 13 between the claw portions 44, 31 of the caulking claw members 42, 43, the other end portions 42b of the caulking claw members 42, 43 from each sliding surface 70, In order to increase the force acting on 43b, it is conceivable to reduce the size of the angle of each sliding surface 70 with respect to the traveling direction of each pushing member 68 as a whole as much as possible. Since the length from the distal end 69a of the tapered portion 69 to the proximal end 69b is increased, the length of each pushing member 68 is increased, and the overall size of the caulking jig 10 is increased.

  On the other hand, according to the present invention, as described above, the angle of each sliding surface 70 with respect to the traveling direction of each pushing member 68 decreases from the distal end 69a of the tapered portion 69 toward the proximal end 69b. Therefore, when the tapered portion 69 of each pushing member 68 is pushed between the other end portions 42 b and 43 b of each caulking claw member 42 and 43, each caulking claw member 42 and 43 is inserted from each sliding surface 70 of the tapered portion 69. The force acting on the other end portions 42b and 43b can be increased as the pushing amount of the tapered portion 69 between the other end portions 42b and 43b of the caulking claw members 42 and 43 increases.

  As a result, the rotation position where the other end portions 42b and 43b of the caulking claw members 42 and 43 are in contact with each other and the claw portions 44 and 31 of the caulking claw members 42 and 43 contact the inflow portion 12 and the outflow portion 13, respectively. A pivot shaft is provided with a force to be applied to the other end portions 42b and 43b of the caulking claw members 42 and 43 from the respective sliding surfaces 70, such as between the swiveling positions in contact with each other. In the portion where the force to rotate around 45, 46, 47, 48 is sufficient, the angle of each sliding surface 70 is increased, and the claw portions of the caulking claw members 42, 43 are the inflow portion 12 and the outflow portion 13, respectively. The swivel claw members 42 and 43 are rotated so that the claw portions 44 and 31 come into contact with the swivel positions when the claw portions 44 and 31 swivel the inflow portion 12 and the outflow portion 13 with a predetermined amount. In addition to the force to be moved, the inlet 12 and the flow In the portion where the force for deforming the portion 13 is required, the angle of each sliding surface 70 is set so as to increase the force applied from the sliding surfaces 70 to the other end portions 42b, 43b of the caulking claw members 42, 43. By reducing the size, the force applied to each caulking claw member 42 from each sliding surface 70 with a force large enough to caulk the inflow portion 12 and the outflow portion 13 without increasing the overall length of each pushing member 68. It is possible to act on the other end portions 42b and 43b of 43.

  Further, as described above, since the magnitudes of the forces output from the claw portions 44 and 31 of the caulking claw members 42 and 43 can be made substantially equal, the claw portions 44 and 31 of the caulking claw members 42 and 43 can be made equal. It is possible to reliably prevent the caulking degree of the inflow portion 12 and the outflow portion 13 from being biased due to the magnitudes of the forces output from the two.

  Further, as described above, the maximum width dimension of the tapered portion 69 is set so that the claw portions of the caulking claw members 42 and 43 respectively caulk the inflow portion 12 and the outflow portion 13 with a predetermined caulking amount. , 43 is substantially equal to the distance between the other end portions 42b, 43b at the pivoting position, so that when the tapered portion 69 is pushed between the other end portions 42b, 43b of the respective caulking claw members 42, 43, the respective caulking portions 69 are pushed. The distance between the other end portions 42b and 43b of the claw members 42 and 43 does not become larger than the distance between the swaging claw members 42 and 43 at the rotational position.

  Thus, the caulking claw members 42 and 43 are prevented from rotating beyond the rotation position in a direction in which the claw portions 44 and 31 approach each other.

  Therefore, the claw portions 44 and 31 of the caulking claw members 42 and 43 rotate in the direction in which the claw portions 44 and 31 approach each other so that the claw portions 44 and 31 of the caulking claw members 42 and 43 are respectively inflow portions. Since the caulking amount exceeding the predetermined caulking amount is prevented, the inflow portion 12 and the outflow portion 13 can be reliably prevented from being caulked.

  Further, as described above, since the heat exchanger 11 is held by the clamp device 18 in a state where the inflow portion 12 and the outflow portion 13 are placed at a predetermined caulking position between the caulking claw members 42 and 43, It is necessary to hold the heat exchanger, for example, when the operator holds the heat exchanger 11 by hand in a state where the portion 12 and the outflow portion 13 are in a predetermined caulking position between the caulking claw members 42, 43. Absent. Thereby, workability | operativity for caulking the inflow part 12 and the outflow part 13 can be improved reliably.

  Further, by holding the heat exchanger 11 with the clamping device, the inflow portion 12 and the outflow portion 13 are prevented from being displaced from the predetermined caulking position when the inflow portion 12 and the outflow portion 13 are caulked. Thereby, it is possible to reliably prevent the caulking defect from occurring in the inflow portion 12 and the outflow portion 13 due to the inflow portion 12 and the outflow portion 13 being displaced from the predetermined caulking position.

  Further, as described above, the pair of clamping members of the clamping device can be rotated around the same or different shaft members in a direction in which the clamping portions of the respective clamping members approach each other and in a direction away from each other. The claw members 42 and 43 are arranged so as to overlap each clamping member so that the respective claw portions correspond to the clamping portions.

  From this, by rotating the caulking claw members 42 and 43 around the respective pivots while holding the heat exchanger by sandwiching the inflow portion 12 and the outflow portion 13 with the sandwiching portions of each sandwiching member, The inflow portion 12 and the outflow portion 13 can be easily sandwiched between the claw portions of the caulking claw members 42 and 43.

  Further, as described above, the top plate 22 of the pedestal 16 is provided with the rail member 72 for guiding the linear movement of each pushing member 68 toward the predetermined pushing position between the caulking claw members 42 and 43. Therefore, each pushing member 68 is prevented from moving in the direction orthogonal to the moving direction.

  This reliably prevents the pushing position of each pushing member 68 between the caulking claw members 42 and 43 from shifting from the predetermined pushing position by moving each pushing member 68 in a direction orthogonal to the moving direction. be able to.

  In this embodiment, a process in which power is input to the rotating body 50 by the second operating lever 57 and the power is transmitted from the rotating body 50 to the first and second caulking claw members 42 and 43 by the transmission mechanism 20. Although an example in which the power is increased in both the processes and the process to be performed is shown, instead of this, one of the processes can be made unnecessary and the power can be increased in the other process.

  In the present embodiment, each clamp device 18 has an example including a fixed portion 25 that is fixed to the top plate 22 and a movable portion 26 that is rotatably supported on the top plate 22. It can replace with this and each clamp device 18 can be constituted by a clamp device which has a pair of movable parts 26 supported so that rotation on top plate 22 is possible, respectively.

  In this case, each movable part 26 of each clamp device can be operated by the above-described operation mechanism 33.

  Further, in this case, each movable portion 26 can be supported by the same shaft member or different shaft members so as to be rotatable around the shaft member.

1 is a plan view schematically showing a caulking jig according to the present invention. It is a longitudinal cross-sectional view which shows roughly the state by which the inflow part and outflow part of the heat exchanger which concern on this invention were respectively crimped. It is a top view which shows roughly the clamp apparatus which concerns on this invention. It is a top view which shows roughly the initial state of the clamp apparatus which concerns on this invention. It is a top view which shows roughly the crimping part which concerns on this invention. It is a top view which shows roughly the state by which the pushing member which concerns on this invention was pushed between the other end parts of each crimping claw member. (A) thru | or (d) is explanatory drawing for demonstrating the motion of each member when rotating the 2nd operation lever which concerns on this invention in order of a time series. It is explanatory drawing for demonstrating the boosting effect by the 2nd operation lever which concerns on this invention. (A) And (b) is explanatory drawing for demonstrating the boosting effect by the 1st link member which concerns on this invention, respectively. (A) thru | or (d) is explanatory drawing for demonstrating the motion of each pushing member when rotating the 2nd operation lever which concerns on this invention in time series.

Explanation of symbols

10 Fixing jig 11 Heat exchanger 12, 13 Connection part (inflow part, outflow part)
14 Pipe member 15 Housing 16 Base 18 Clamping device 20 Transmission mechanism 21 Booster mechanism 25, 26 Holding member (fixed part, movable part)
30 Shaft member 31, 44 Claw portion 42, 43 Caulking claw member (first caulking claw member, second caulking claw member)
45, 46, 47, 48 Axis 50 Input section (rotating body)
51 Rotating shaft 57 Operation lever (second operation lever)
58 Link mechanism 60 Link member (first link member)
68 Pushing member 69 Tapered portion 70 Sliding surface 72 Guide member (rail member)

Claims (11)

  A caulking jig used when caulking the connection member to fix the tube member inserted in a cylindrical connection portion provided in the heat exchanger to the connection portion, and caulking the connection portion A pair of caulking claw members for clamping as much as possible, an input unit for inputting power for caulking the connecting portion, and a transmission mechanism for transmitting the power input to the input unit to the caulking claw members And a booster mechanism for increasing the power in at least one of a process in which the power is input to the input unit and a process in which the power is transmitted to the caulking claw members by the transmission mechanism. A characteristic caulking jig.   Each of the caulking claw members has a claw portion sandwiching the connection portion at one end portion, and is rotatable in a direction in which the both claw portions approach each other and in a direction away from each other around a pivot provided in each of the claw portions. The input unit is a rotating body that can rotate around a rotating shaft, and the transmission mechanism includes a plurality of link members connected to the rotating body, and a link that converts the rotating motion of the rotating body into a linear motion. And each caulking claw member to cause the power to act on each of the caulking claw members as a rotational force in a direction in which the both claw portions approach each other by performing a linear motion by a mechanism and the power transmitted through the link mechanism. A pusher member that is pushed between the other end portions so that the other end portions of the link mechanism are spaced apart from each other, and the rotation of the plurality of link members of the link mechanism Contact with the body One end of the link member is supported on a shaft provided on the rotating body at a position shifted from the rotating shaft of the rotating body so as to be swingable around the shaft, and the boost mechanism is In order to rotate the rotating body, one end is fixed to the rotating shaft of the rotating body, and the length dimension is determined by an interval between the rotating shaft of the rotating body and the shaft of the link member supported by the rotating body. The caulking jig according to claim 1, further comprising a large operating lever.   The booster mechanism is formed at the pushing end portion of the pushing member, and is opposed to each other in the width direction perpendicular to the moving direction of the pushing member, and the interval between the pushing members is gradually reduced toward the caulking claw members. The crimping jig according to claim 2, further comprising a tapered portion having a pair of sliding surfaces that slide on the other end portions of the claw member.   The caulking jig according to claim 3, wherein an angle of each sliding surface with respect to a moving direction of the pushing member is reduced from a distal end to a proximal end of the tapered portion.   Each of the sliding surfaces is symmetrical with respect to a straight line passing through the center in the width direction of the pushing member and along the traveling direction of the pushing member, and the other end portion of one of the caulking claw members and the pivot shaft The caulking size according to any one of claims 3 to 4, wherein the size of the interval and the size of the interval between the pivot and the claw portion are equal to those of the other caulking claw member, respectively. jig.   The maximum width dimension of the tapered portion is determined between the other end portions of the swiveling claw members at their pivot positions when the claw portions of the swaging claw members respectively swivel the connection portions with a predetermined swaging amount. The caulking jig according to claim 3, wherein the caulking jig is substantially equal to the interval.   Each of the pivots has a distance between the pivot and the claw portion of the caulking claw member provided with the pivot rather than a distance between the pivot and the other end portion of the caulking claw member provided with the pivot. The caulking jig according to any one of claims 2 to 6, wherein each of the caulking claw members is provided at a position where an interval therebetween becomes large.   8. A clamp device for holding the heat exchanger in a state where the connection portion of the heat exchanger is placed at a predetermined caulking position between the caulking claw members. The caulking jig according to any one of the above.   The clamp device includes a pair of clamping members having a clamping part that clamps the connection part, and the clamping members are separated from each other in directions in which the clamping parts approach each other around the same or different shaft members. Each caulking claw member is arranged so as to overlap each clamping member so that each claw portion corresponds to the clamping portion, and each pivot shaft of each caulking claw member 9. The caulking jig according to claim 8, wherein each of the clamping members is provided on each clamping member, and each of the shaft members is disposed closer to each clamping part than each pivot.   The caulking claw member, the input unit, the transmission mechanism, and the booster mechanism are further provided with pedestals, respectively, on the pedestal, and the pedestal claw members are moved toward a predetermined pushing position between the caulking claw members. The caulking jig according to any one of claims 2 to 9, further comprising a guide member for guiding the linear movement of the pushing member.   The heat exchanger includes a housing in which the connection portion is provided and into which the refrigerant flows, and each of the caulking claw members is in contact with the side surface of the base of the heat exchanger. The nail part is disposed on the pedestal so as to protrude to the side of the pedestal so that the connection part is sandwiched between the nail parts in a state where the pedestal is held. Caulking jig.

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