JP4796870B2 - Bundling tool drive human power device - Google Patents

Description

  The present invention relates to a human power device for driving a bundling tool having a structure that does not have a drive source by using human power, that is, a human power device for driving a bundling tool.

  The bundling tool is to bind the bundling object with a dedicated bundling band (also called “bundling tie” or simply “tie”), and the bundling object includes a wire group, a pipe group, various long products, etc. There are various types, but representative ones include wire harnesses that are frequently used in vehicles such as automobiles, construction machines, and work machines. Conventionally, as a binding tool of this type, as disclosed in Patent Document 1 and Patent Document 2, a tool body, a grip handle attached below the tool body, and a pair equipped at the tip of the tool body. There is known a handy type having a flange member.

  The bundling tools disclosed in these Patent Documents 1 and 2 are of an electric type in which a series of operations are driven by an electric motor. In addition to mechanical devices necessary for bundling, an electric motor for driving, Many electric-related parts and devices such as electric circuits, display lamps, various sensors, electric switches and the like are necessary, and the total bundling tool has been relatively expensive.

  Therefore, it is difficult to be expensive for use in small-scale factories that produce small quantities, private shops, developing countries, and the like, and it has been difficult to mechanize the bundling work. However, since it takes too much labor to cover the bundling operation manually, and the work efficiency is not good, there is an increasing demand for an inexpensive bundling tool.

Therefore, in order to reduce the cost of bundling tools so that they can be used in small-scale factories that produce small quantities, private shops, developing countries, etc., the drive source is an electric type that uses a built-in electric motor and human power. It is necessary to consider how the externally driven tool body is driven and operated by human power.
Japanese Patent Laid-Open No. 10-180646 JP-A-10-250707

  An object of the present invention is to drive a tool body configured in an externally driven type satisfactorily when it is driven by human power in order to reduce the cost of a convenient binding tool that can be mechanically bound using a binding band. It is in the point which implement | achieves and provides the manpower apparatus which can do, ie, the manpower apparatus for bundling tool drive.

  The invention according to claim 1 is a power transmission mechanism in a tool main body H for performing a series of bundling operations in which a bundling band 1 is sent out and wound around a bundling object W and tightened and bundled in a human power device for bundling tool driving. In order to be able to supply a driving force necessary for performing the series of bundling operations via D, a manipulating tool 4 to be manually operated and a driving force of a predetermined level or more act on the power transmission mechanism D. The torque limiter Tr functions to cut off the interlocking between the operated tool 4 and the power transmission mechanism D.

According to a second aspect of the present invention, in the binding tool driving human power device according to the first aspect, the torque limiter Tr is interlocked with the intermediate body 50 moved and operated by the operated tool 4 and the power transmission mechanism D. A movable member 45 that is connected and movable in the same direction as the intermediate body 50, a concave portion 45b formed on one of the side walls of the intermediate body 50 and the movable member 45, and the concave portion 45b. And having a clutch member 52 supported by either one of the intermediate body 50 and the movable member 45 in a state of being projected and urged by the elastic mechanism 51,
When the driving load acting on the movable member 45 via the power transmission mechanism D is not more than a predetermined value, the clutch member 52 is fitted in the recess 45b, and the intermediate body 50 and the movable member 45 are integrated. And when the driving load exceeds a predetermined value, the force to push the clutch member 52 back to the other side by the component force due to contact with the inclined surface 45d formed in the recess 45b is The clutch member 52 is set so as to come out of the recess 45b by exceeding the protruding urging force by the elastic mechanism 51.

  According to a third aspect of the present invention, in the binding tool driving human power device according to the second aspect, the concave portion 45b is provided in the movable member 45, and the clutch member 52 and the elastic mechanism 51 are provided in the intermediate body 50, respectively. It is characterized by being deployed.

  The invention according to claim 4 is the human power device for driving a bundling tool according to any one of claims 1 to 3, wherein the operated tool 4 is a swing pedal that can be stepped on freely. To do.

  According to a fifth aspect of the present invention, in the binding tool driving human power device according to the fourth aspect, the movable member 45 and the intermediate body 50 are erected on a base member 48 that pivotally supports the swing pedal 4. The intermediate body 50 is fitted and supported so as to be slidable up and down while facing the vertical frame 49, and the intermediate body 50 is equipped with a contact member 50a for forcibly descending and sliding upon receiving the depression force of the swing pedal 4. It is characterized by being.

  According to a sixth aspect of the present invention, in the binding tool driving human power device according to the fifth aspect, the vertical frame 49 has a support portion Si for receiving the outer cable 5B of the Bowden wire 5 constituting the power transmission mechanism D. And a connecting portion Re for connecting the inner cable 5A of the Bowden wire 5 is formed in the movable member 45.

  According to the first aspect of the invention, the following actions and effects can be obtained. In other words, in a structure in which the operated tool and the tool body are directly linked via a power transmission mechanism, if a malfunction occurs during the binding operation and a load greater than normal is applied, Since extra force is required to move the tool, in many cases it can be expected to notice the occurrence of an abnormality, but if you try to drive with more power without noticing it, the tool body It is predicted that inconveniences such as deformation and damage of the mechanical devices and damage to the power transmission mechanism will occur.

  On the other hand, in the binding tool driving human power device according to the present invention, the human power for performing a series of binding operations for binding the binding object using the binding band by driving the tool body manually through the power transmission mechanism. As a device, it is equipped with a torque limiter that functions to cut off the interlock between the operated tool and the power transmission mechanism when a drive load exceeding a predetermined level is generated. Even if an operation is attempted to forcefully move, the torque limiter will operate and only the tool will move, preventing excessive operating force from being transmitted to the power transmission mechanism and tool body. .

  As a result, in order to reduce the cost of a convenient binding tool that can be mechanically bound using a binding band, the possibility of damaging the tool body or the like due to the manual operation is avoided. As one having a preferable function, it is possible to realize and provide a bundling tool driving manpower device capable of satisfactorily driving an externally driven tool body.

  According to the second aspect of the present invention, the torque limiter is configured by using the intermediate body operated by the operated tool and the movable member interlocked and connected to the power transmission mechanism. And it exists as a mechanism independent of the operated tool, and there is an effect that it is easy to perform inspection and maintenance such as assembly, disassembly, and maintenance. In addition, since it is an independent mechanism in this way, when a malfunction occurs in a human power device, it is easy to determine whether the malfunction is in the operated tool or in the torque limiter, and problem solving is quicker. In the torque limiter, it is possible to determine whether it is on the movable member side or on the intermediate body side.

  According to the third aspect of the present invention, the concave portion is provided in the movable member having the interlocking connection portion with the power transmission mechanism, and the clutch member and the elastic member are provided in the intermediate body operated by the operated tool. For example, compared with a case where a clutch member and an elastic member are further provided in a movable member having an interlocking connection portion with a power transmission mechanism, the concentration of mechanisms on the movable member is avoided, and the movable member and the intermediate body In addition, the complexity of the structure is distributed. Therefore, it is possible to provide a torque limiter that can rationalize the structure and that is less likely to cause inconveniences such as failure.

  According to the invention of claim 4, as a swing pedal that is operated as a stepping tool as an operated tool, it is a means for driving the tool body with the force of a leg that can exert a powerful power compared to an arm or a hand. It is possible to provide a human-powered device that can relatively easily supply the driving force and can perform continuous operation over a long period of time.

  According to the fifth aspect of the present invention, since the movable member and the intermediate body are slidably supported in a state of being opposed to each other by the vertical frame provided on the base member for supporting the swing pedal, the configuration of the torque limiter is provided. The elements are concentrated and arranged in the vertical frame portion, and the intermediate body having the contact member and the swing pedal are completely different from each other. Therefore, it is possible to provide an easy-to-use human power device that allows easy assembly and disassembly of the torque limiter that easily complicates the structure while maintaining the necessary functions. And when a power transmission mechanism is a Bowden wire like Claim 6, it is good to distribute and arrange | position the support part of an outer cable to a vertical frame, and a connection part with an inner cable to a movable member, respectively.

  Embodiments of an externally driven binding tool according to the present invention and a manually driven stationary binding device using the same will be described below with reference to the drawings. FIG. 1 is an overall view showing an example of how to use it as a human-powered stationary binding device, FIGS. 2 to 6 are views relating to a tool body, FIGS. 7 to 11 are views relating to a human power pedal device as a power supply unit, FIGS. 12 to 19 are operation diagrams showing the schematic operation status of each step of binding in the tool body, and FIG. 20 is a plan view of a partially cut-out showing a conventional binding tool built in an electric motor.

[Example 1]
As shown in FIG. 1, an external power type binding tool A according to the present invention includes a tool body H for performing a series of binding operations for sending a binding band 1 and winding it around a binding target W and tightening and binding the tool body H; A power supply unit K that is separate from the tool body H capable of supplying a driving force necessary for performing a series of bundling operations on the body H, and the power generated in the power supply unit K is supplied to the power input unit n of the tool body H. And a power transmission mechanism D for transmission.

  The state shown in FIG. 1 is a manpower-driven stationary binding device G using the external power binding tool A, and the tool body H is mounted on the support portion 3 and mounted on a work table (working table). 2) and the power supply unit K is configured as a human power pedal device having an artificial operation pedal 4 to be stepped on. The power transmission mechanism D is configured by providing a Bowden wire 5 that interlocks and connects the human power pedal device K and the power input unit n. That is, the worker M sitting on the work chair 6 sets the binding object W such as a wire harness in the binding space S sandwiched between the pair of upper and lower flange members 7 and 8 in the tool body H using both hands. By stepping down the artificial operation pedal 4 in this state, the binding object W can be bound with a predetermined binding pressure using the binding band 1 (described later). Reference numeral 9 denotes a rotating reel supported by the tool body H in order to continuously supply the binding band 1 to the tool body H.

  The tool main body H uses a known electric automatic binding tool (see FIG. 20) B having a built-in electric motor 47 as a drive source (power source), and various mechanisms necessary for the binding operation remain as they are. In this case, only the electric motor and its drive circuit, sensors, switches, wiring, and other related parts of the electric drive unit are omitted, and instead, a power input unit n is provided to accept external power. It is comprised as an external power type binding tool. Thus, the system which can reduce the cost required as the binding tool A to about a half is realized by changing an electric drive type into a manpower drive type. Next, the structure of each part constituting the external power type binding tool A will be described in detail.

  As shown in FIGS. 2 to 6, the tool body H includes a rotating reel 9 (see FIG. 1), a feeding mechanism a, a body body 10 having a grip portion 11 on the lower side for gripping and supporting with a finger. While equipped with a heel opening / closing mechanism b, a tightening mechanism c, and a cutting mechanism d, it has a power input portion n configured on the left side surface of the main body 10. In addition, about locations other than the power input part n, it will be well-known and shall be stopped to outline description. In the main body 10, a counter shaft 12 that accelerates and inputs rotational power from the power input unit n, a cam shaft 13 that meshes with the counter shaft 12 and is driven to rotate at a reduced speed, and is driven by the cam shaft 13. The feed shaft 14 and the cam 15 attached to the left end of the cam shaft 13 are provided. One cycle of the bundling operation described later is configured to be performed while the counter shaft 13 is rotated once.

  The rotary reel 9 is pivotally supported around a front and rear axis (not shown) at a position above the main body 10 by front and rear stays 10s, and although not shown, a number of binding bands 1 are arranged in parallel. A tie band is formed by being wound around. In other words, the unrolling reel 9 is unwound and rotated, so that the detection band 1 can be sequentially supplied from the wound binding band to the upper end of the main body 10.

  As shown in FIGS. 13 and 14, the delivery mechanism “a” includes a band 1 </ b> V and a binding band 1 having a band 1 </ b> V and a head 1 </ b> H through which the band 1 </ b> V can be inserted in a reversely restricted state. An example of an object) A long length made of a flexible material that can be bent and displaced from a supply position s (see FIG. 14) to a delivery completion position k (see FIG. 14) for winding around W. -Like spiral 16, a gear-like ring body 17 having a tooth part 17 a meshing with the tooth part 16 a of the spiral 16, an input gear 18 engaged with the gear-like ring body 17, and a short rack 19 meshing with the input gear 18. In addition, it is configured to have an interlocking link 21 or the like that spans between the distal end portion of the drive arm 20 attached to the camshaft 13 and the short rack 19.

  As shown in FIG. 12 and the like, the heel opening / closing mechanism b includes an upper heel member 7 disposed on the top end of the main body 10 so as to be swingable around the first fulcrum P1 (see FIG. 17), and a second fulcrum P2. A lower collar member 8 is provided at the lower end of the front end of the main body 10 so as to be swingable around (see FIG. 15). A pair of binding band guides 7 and 8 arranged opposite to each other in the vertical direction are moved away from each other in order to take the binding target W into a binding space S formed between the upper and lower sides of the binding members 7 and 8. It is possible to switch between an open posture (see FIG. 12) and a first closed posture (see FIG. 13) and a second closed posture (see FIG. 16) in which both the members 7 and 8 are close to each other.

  As shown in FIG. 13, the first closed posture is a posture in which only the upper collar member 7 swings downward and the tips of the collar members 7 and 8 are in close contact with each other (the lower collar member 8 is still in the standby position). And a state suitable for winding the binding band 1 sent out by the sending mechanism a around the binding object W taken in the binding space S is formed. As shown in FIG. 15, the second closed posture is a posture in which the lower collar member 8 is swung upward and swinging within a predetermined range in the first closed posture, and the operation from the first closed posture to the second closed posture is performed. The band portion 1V whose tip is close to the head portion 1H can be inserted into the head portion 1H (band insertion step).

  As shown in FIGS. 14 to 16, the tightening mechanism c forcibly applies the band front end 1v through which the head 1H is inserted in the band 1V to tighten the band 1V wound around the binding object W. A tightening drum 23 that is driven and rotated by the camshaft 13 via the intermediate gear 22, and a pair of front and rear rotatable clamping drums 24 and 25 that are disposed close to each other above the tightening drum 23. Is provided. In other words, the band tip 1v sent when the heel opening / closing mechanism b is in the second posture reaches between the tightening drum 23 and the first clamping drum 24 that are always driven to rotate, so that the band tip 1v is pulled into the tightening mechanism c and is sent obliquely downward from between the tightening drum 23 and the second clamping drum 25, so that the tightening operation by pulling the band portion 1V can be performed in an instant. It is configured.

  As shown in FIG. 17, the cutting mechanism d includes a vertically-facing cutter (cutting blade) 26 provided in the front end portion of the main body 10 immediately above the root portion of the lower collar member 8, and both upper sides of the cutter 26. And a drive lever 27 swingable about the first fulcrum P1 in the engaged state. That is, the cutter cam 28 attached to the camshaft 13 kicks the drive lever 27 and lifts and swings the cutter 26 so that the cutter 26 moves upward, and the band portion 1V after the tightening is completed is positioned at the intermediate position of the head portion 1H. It is configured to cut. The cut surplus band portion 1y is dropped and stored in the collecting portion 29 formed in front of the grip portion 11.

  2 to 5, the power input unit n is for transmitting the power generated in the human power pedal device K to the counter shaft 12 via the Bowden wire 5, and the inner cable 5A of the Bowden wire is connected to the power input unit n. A rack and pinion 32 is provided that includes a rack gear 30 having a freely connectable tip and a pinion gear 31 that meshes with the rack gear 30, and converts the movement of the inner cable 5 </ b> A into the outer cable 5 </ b> B into the rotational movement of the pinion gear 31. And a compression coil spring 33 for returning and urging the inner cable 5A in the direction of being pulled out from the outer cable 5B. The input shaft 34 having the pinion gear 31 is provided with a large gear 36 that meshes with the small-diameter gear 35 of the counter shaft 12, and is configured to amplify the sliding movement amount of the rack gear 30 and rotationally drive the counter shaft 12. ing.

  A rail bracket 37 is fixed to the left side surface of the main body 10. The rail bracket 37 is formed of a plate material that has a horizontally long U-shape when viewed from the side. Has been. On the tip side of the rail bracket 37, a tip spring seat 39 is slidable forward and backward with the rail protrusions 39a and 39a fitted in the upper and lower rail grooves 38, 38. The tip spring seat 39 and the base side are provided. A compression coil spring 33 is provided between the fixed spring seat 40 and the fixed spring seat 40. The base side end of the rack gear 30 is bolted to the support portion 39b on the front side of the tip spring seat 39, and when the inner cable 5A is pulled, the compression coil spring 33 is compressed against its elastic force to compress the rack gear 30. Can be slid in the retracting direction, and if the tension of the inner cable 5A is released, the rack gear 30 can be slid by the elastic force of the compression coil spring 33 and can be self-returned to the starting end position.

  The pinion gear 31 rotates integrally with the large gear 36 (with the input shaft 34) in the direction of arrow A (see FIG. 4), and functions so that only the pinion gear 31 rotates in the direction of arrow B (see FIG. 4). It has Cr. As shown in FIG. 6, the one-way clutch Cr includes a housing 41 that is bolted to the pinion gear 31, a clutch rotating body 42 that is fitted in the pinion gear 31 and the housing 41 in a state of rotating integrally with the input shaft 34, and a housing 41. A ratchet 43 pivotally supported therein, and a torsion spring 44 that elastically biases the ratchet 43 in a direction to engage the clutch pawl 42a on the outer periphery of the clutch rotating body 42 are configured. The clutch pawls 42a are formed in two places at positions 180 degrees apart from each other on the outer periphery of the clutch rotating body 42.

  For reference, FIG. 20 is a plan view showing a schematic internal structure of a conventional binding tool B driven by an electric motor 47. In the electric binding tool B, the counter shaft 12 and the motor shaft 47a are interlocked and connected via a bevel gear mechanism 61, and the counter shaft 12 does not protrude to the outside. On the other hand, in the external drive type binding tool A according to the present invention, as shown in FIG. 5, the counter shaft 12 is extended to protrude leftward from the tool body H, and is engaged with the small diameter gear 35 at the protruding end. An input shaft 34 having a gear 36, a rack and pinion 32 for rotating the input shaft 34 by the Bowden wire 5 and the like are arranged between the tool body H and the cover frame 62, and a power input unit n is newly constructed. However, the electric motor 47 is omitted.

  Next, the human power pedal device K which is a power supply unit will be described. As shown in FIGS. 7 to 11, the manual pedal device K includes a swing pedal (an example of an operated tool) that is pivotally supported by a base member 48 so as to be freely lowered and swung by stepping and raised and swung by release of stepping. ) 4, a movable member 45 supported by a vertical frame 49 standing on the base member 48 so as to be slidable up and down, and an interlocking mechanism 46 similarly supported by the vertical frame 49 so as to be slidable up and down. Configured.

  The base member 48 is made of a steel plate whose left and right ends are bent upward to be reinforced, and a pair of left and right insertion holes 48a and 48a for pivotally supporting the swing pedal 4 are formed on the base side thereof. . The swing pedal 4 is made of a steel plate press having a transverse cross-sectional shape of a downward U-shape and a support shaft 4a supported at both ends in the insertion holes 48a, 48a of the base member 48. A relief notch 4 </ b> A having a rectangular recess shape is formed at the left and right central portions on the distal end side.

  The vertical frame 49 includes a bottom plate 49A, a right vertical wall member 49B, a left vertical wall member 49C, and a front wall member 49D that are fixed to the tip side portion of the base member 48. The movable member 45 accommodated in the vertical frame 49 is formed by the right vertical groove 49b formed on the inner side and the left vertical groove 49c formed by a clearance in the front-rear direction between the left vertical wall member 49C and the front wall member 49D. Is supported so that it can be slid up and down. The movable member 45 includes a hooking hole 45a for pivotally supporting the drum portion 5a at the tip of the inner cable 5A of the Bowden wire 5, a recess 45b formed on the side surface to form a torque limiter Tr (described later), It is formed of a square block having a pair of left and right shaft projections 45c and 45c for sliding into the left vertical grooves 49b and 49c. That is, the vertical frame 49 is formed with a support portion Si for receiving the outer cable 5B, and the movable member 45 is formed with a connecting portion Re for connecting the inner cable 5A.

  The interlocking mechanism 46 includes a pair of left and right contact members 50a and 50a made of a shaft member, a bottom member 50b, a square tube space 50c for accommodating a spring, and a pair of left and right sliding rails 50d that are vertically long. , 50d, a compression-type coil spring 51, a clutch member 52 and the like mounted on the tip side of the coil spring 51, and a load in a driving direction more than a predetermined level is applied to the movable member 45. In addition, a torque limiter Tr that cuts off the linkage between the swing pedal 4 and the movable member 45 is provided.

  The intermediate body 50 has its left and right vertical rail protrusions 50d and 50d fitted in left and right slide grooves 49d and 49d formed on the inner surface side of the vertical frame 49, so that the intermediate frame 50 can slide up and down within a predetermined range. When the swing pedal 4 is stepped on, the pedal short wall 4b formed side by side on the left and right sides presses the left and right contact members 50a and 50a to forcibly slide downward. It is configured to be. The clutch member 52 that is forwardly biased by the coil spring is positioned inside the vertical frame 49, and a rotatable roller 52 a that is pivotally supported by the distal end portion of the clutch member 52 presses the concave portion 45 b of the movable member 45. It is set to fit in.

  The concave portion 45b has a substantially semicircular shape in side view so as to follow the outer shape of the roller 52a, and the lower end portion thereof is formed on an inclined surface 45d that is cut obliquely downward. That is, as shown in FIG. 10, the movable member 45 and the intermediate body 52 are normally in a state of sliding up and down integrally, and as the swing pedal 4 is depressed, the intermediate body 52 and the movable member 45 move downward together. As a result, the inner cable 5A is forcibly pulled. When the inner cable 5A is pulled, the rack and pinion 32 of the power input unit n is actuated and the input shaft 34 is rotationally driven in the direction of the arrow (see FIG. 4).

  However, an excessive load is applied to the driving portion of the tool body H or the Bowden wire 5, that is, the pressing force of the movable member 45 due to some cause, such as foreign matter having an unexpected size between the upper and lower flange members 7 and 8. 11, the component force that pushes back the clutch member 52 to the intermediate body 50 side (in the direction of the arrow C in FIG. 11) due to the contact between the roller 52 a and the inclined surface 45 d is applied to the coil spring 51 as shown in FIG. 11. As a result, the roller 52a comes out of the recess 45c and only the intermediate body 50 slides downward, so-called “empty step state”. Therefore, if the swing pedal 4 is depressed with a large operating force without noticing the trouble, the torque limiter Tr is automatically operated so that a pressing force exceeding a predetermined value is not transmitted to the movable member 45. As a result, the drive of the tool body is interrupted to prevent failure.

  That is, the torque limiter Tr is a movable member of the movable member 45 and the intermediate member 50 that is movable along the moving direction of the movable member 45 and is forced to move downward by the swing pedal 4 (whichever One example) of the intermediate body 50 and the movable member 45 in a state of being protruded and biased by a coil spring (an example of an elastic mechanism) 51 so as to be fitted into the recess 45b, and a recess 45b formed on the side wall of 45. Clutch member 52 supported by intermediate member 50 (an example of one of the other), and when the load in the driving direction (in the direction of arrow D in FIG. 11) acting on movable member 45 is below a predetermined value, the clutch When the member 52 is fitted in the recess 45b and the intermediate body 50 and the movable member 45 move integrally, and the load in the driving direction acting on the movable member 45 exceeds a predetermined value, the member 52 is provided in the recess 45b. Clutch member 52 by the force pushing back the clutch member 52 to the intermediate member 50 is greater than the projecting energizing force of the coil spring 51 is set to a state to get out of the recess 45b by the component force by the inclined surface 45d was.

  When the torque limiter Tr is actuated and is in an idling state, first, an operation for eliminating a trouble such as removing a foreign object sandwiched between the pair of flange members 7 and 8 is performed. At this time, the rack gear 30 is returned to the standby position by the restoring force of the compression coil spring 33, whereby the inner cable 5A is pulled to act to return the movable member 45 to the standby position where it is raised most. The swing pedal 4 that has been stepped down and lowered is moved upward by, for example, lifting the intermediate body 50 with a finger, and the roller 52a (the clutch member 52) is returned to the normal state where it is fitted in the recess 45c. Thereafter, the stepping operation of the swing pedal 4 is resumed.

  Next, an outline of one cycle of bundling by the depression of the swing pedal 4 will be described. The externally driven binding tool A is a known tool that can perform a one-cycle binding operation by one stepping operation of the swing pedal 4, and the operation process is roughly divided into a binding band supply process and a binding space. It consists of a closing process, a bundling band feeding process, a head part insertion process, a band tightening process, and a surplus band cutting process. It should be noted that one cycle of bundling is set to be performed all while the cam 15 (cam shaft 13) rotates exactly once.

  The binding band supply step is a step of supplying the binding band 1 supplied from the rotary reel 9 or the like to the band loading unit 56 in the upper part of the tool main body H. That is, as shown in FIG. 12A, the rack gear 30 is pulled in accordance with the depression of the swing pedal 4, moves in the direction of arrow E, the input shaft 34 rotates by a predetermined angle in the direction of arrow A, and the counter shaft 34 moves in the direction of the arrow. The cam shaft 13 and the cam 15 start to rotate in the arrow direction from the standby position (position shown in FIG. 12A). Then, as shown in FIG. 12B, when the cam 15 rotates in the direction of the arrow, the intermediate link 53 rotates in the direction of the arrow H to cause the vertical rack member 54 to slide down and engage with the rack gear portion 54a. A band winding drum 55 having a passive gear portion 55a that rotates is unrolled from the rotating reel 9 provided above the tool body H and wound around the drum 55 (illustrated). (Omitted), one binding band 1 is supplied to the band loading section 56 of the tool body H. Note that the binding band 1 drawn with imaginary lines is scheduled to be used in the next binding cycle.

  The bundling space closing step is a step in which the upper collar member 7 is swung downward to swing the bundling space S into a closed space. That is, as shown in FIG. 13, the cam shaft 13 and the cam 15 further rotate in the direction of the arrow at a predetermined angle, whereby the tool body internal side portion (not shown) of the upper collar member 7 and the cam shaft 13 rotate integrally. The upper collar member 7 moves downward and swings along the arc-shaped rail portion 57 of the tool main body H by an interlocking mechanism (not shown) with the upper guide cam that is not operated, and the lower edge member 8 whose tip is fixed. The bundling space S is closed by contact with the tip portion of the wire. As a result, the binding object W taken into the binding space S is prevented from coming out of the binding space S, and a state in which the binding band 1 is ready to be wound is brought about. In this case, the spiral 16 which is a member for pushing the binding band 1 is started to move from the standby position by the feeding mechanism a that is always driven, and as shown in FIG. 13, the binding band 1 of the band loading unit 56 is It is in a position where it is pushed forward slightly.

  The binding band sending process is a process of pushing out the spiral 16 to send the binding band 1 from the supply position s to the completion position k. As shown in FIG. 14, the spiral 16 is formed in a belt-like shape made of a soft synthetic resin material (a material having flexibility) with teeth 16a formed on the entire inner surface thereof. The spiral wheel accommodated in the accommodation cylinder 58 (see FIGS. 18 and 19) is driven by the camshaft 13 through the interlocking link 21 and the drive arm 20 to rotate the gear-like ring body 17 having the teeth 17 a to be engaged. It is comprised so that 16 can be forcedly moved.

  That is, when the cam 15 (cam shaft 13) is further rotated in the arrow direction, the rotational speed of the gear-shaped ring body 17 by the feed mechanism a that is always driven is increased in the rotation angle range. Thus, the spiral 16 is rapidly pushed out, and the binding band 1 can be quickly delivered and pushed out to the completion position k. In the state of being delivered to the delivery completion position k, as shown in FIG. 14, the band portion 1V is guided by the respective guide grooves (not indicated) formed on the inner surfaces of the upper and lower flange members 7 and 8. The band portion 1V is wound and moved so as to surround the binding object W, and is set to be positioned immediately next to the head portion 1H.

  The head portion insertion step is a step of inserting the band portion 1V, the tip portion of which is located immediately beside the head portion 1H, into the head portion 1H. That is, as shown in FIG. 15, the cam 15 (cam shaft 13) is further rotated by a predetermined angle, whereby the operating fork 59 interlocked and linked by a structure (not shown) can rotate at the fulcrum P2 in the lower eaves member 8 Acts on the end portion of the base side and lifts and swings. At this time, since the position of the upper collar member 7 is fixed, the band portion 1V whose circumferential length as the bundling space S, which is a closed space, is inserted through the insertion hole 1h of the head portion 1H from the distal end portion, It is pushed out until it is stuck between the tightening drum 23 and the first clamping drum 24. At this time, the delivery mechanism a starts to return, and the spiral 16 is slightly moved back from the delivery completion position.

  The band tightening step is a step of pulling the tip portion of the band portion 1V through the head portion 1H and winding it tightly around the binding object W without slack. That is, as shown in FIG. 16, the first and second sandwiching drums 24 and 25 are pressed and urged by the elastic drum 60 against the tightening drum 23 that is always rotated. The band portion 1 </ b> V that reaches between the tightening drum 24 and the tightening drum 23 is instantaneously pulled by the tightening mechanism c, and is pulled by being sandwiched between the second clamping drum 25 and the tightening drum 23, and the direction of the tilt is inclined from the lateral direction. Sent in a state changed downward. Since this tightening process is performed instantaneously by using the tightening drum 23 that rotates at a high speed, the cam 15 (cam shaft 13) rotates very little from the position shown in FIG. 15, and accordingly, FIGS. However, the parts other than the binding band 1 are drawn as the same for convenience.

  The surplus band cutting step is a step of cutting off the surplus band portion that protrudes beyond the head portion 1H in the band portion 1V. That is, as shown in FIG. 17, the tool body H in the vicinity of the fulcrum P2 of the lower collar member 8 is provided with the above-described cutting mechanism d having the cutter 26 that can move up and down in a vertical orientation, and the band tightening step. At substantially the same time as the end of the operation, the cutter cam 28 pushes up the drive lever 27, so that the cutter 26 moves upward and cuts the band 1V in the vicinity of the head 1H. After cutting, the surplus band portion 1y is dropped and collected by the collection unit 29. At this time, the upper collar member 7 swings up and down, and the lower collar member 8 swings down and returns to the respective standby positions.

  The cam 15 (cam shaft 13) rotates by a predetermined angle from the end state of the surplus band cutting step (the state shown in FIG. 17), and is bound by the binding band 1 while making a slight one turn from the standby position as shown in FIG. The binding object W is moved from the binding space S to the outside, the sending mechanism a is returned, and the spiral 16 is accommodated inside the tool body H in a state where most of the spiral 16 is inserted into the accommodating cylinder 58. Move back to the standby position. Then, when the vertical rack member 54 is moved upward toward the original standby position by being kicked by the paper 12A to drive the passive gear portion 55a in the reverse rotation direction, the one-way clutch ( With the function (not shown), the drum 55 (see FIG. 12) remains stopped. The cutter 26 is moved downward.

  Then, when the cam 15 (cam shaft 13) is rotated once, as shown in FIG. 19, each part returns to the standby state shown in FIG. 12 (a) to prepare for the next bundling operation. The movement stroke L of the rack gear 30 required for one cycle of this bundling is the distance between the start point t1 and the finish point t2 located immediately above the axis of the input shaft 34 in each rack gear 30 in FIGS. Is defined as And the raising / lowering movement stroke of the movable member 45 in the operating manual power pedal apparatus K is set so that the movement stroke L of the inner cable 5A may be produced.

  As described above, in the externally driven binding tool according to the present invention and the manually driven stationary binding device using the same, the conventional electric motor, its drive circuit and other electrical components and electrical related mechanisms are completely excluded. Since the tool main body is driven by human power using the swing pedal 4, more specifically, leg force, a series of binding the binding object W with the binding band 1 in the binding space between the pair of flange members 7 and 8. The bundling operation can be performed mechanically and conveniently, while the cost can be greatly reduced and the cost can be reduced. As a result, it is possible to construct a bundling tool that mechanizes bundling work that is too labor intensive and poor in work efficiency, and can be constructed at a low cost. It can be introduced without difficulty in countries and the like, and it is possible to improve the efficiency of bundling work.

Overall view showing an example of using a bundling tool as a manually driven stationary bundling device Exploded perspective view showing the structure of the power input section of the tool body, part 1 Exploded perspective view showing the structure of the power input part of the tool body, part 2 Side view of tool body Plan view of part of the tool body Exploded perspective view showing the structure of the one-way clutch Overall perspective view of the pedal pedal device Exploded perspective view showing the structure of the pedal pedal device Partial perspective view of the pedal pedal device Side view during the stepping operation showing the normal operating conditions Side view during the stepping operation showing the operating status during overload Action diagram showing the binding band supply process Action diagram showing the process of closing the binding space by lowering the upper arm Action diagram showing the binding band delivery process Operational diagram showing the band head insertion process by raising the lower armpit Action diagram showing the tightening process of the cable tie Action diagram showing cutting process of surplus band Action diagram showing spiral return process Side view showing the tool body returned to the standby state Partially cutaway plan view showing the schematic structure of a conventional bundling tool with a built-in electric motor

Explanation of symbols

1 Binding band 4 Operated tool (oscillating pedal)
DESCRIPTION OF SYMBOLS 5 Bowden wire 5A Inner cable 5B Outer cable 45 Movable member 45b Recessed part 45d Inclined surface 48 Base member 49 Vertical frame 50 Intermediate body 50a Contact member 51 Elastic mechanism 52 Clutch member D Power transmission mechanism H Tool main body Re connection part Si support part Tr Torque limiter W Binding target

Claims (6)

  It is possible to supply a driving force necessary to perform the series of bundling operations via a power transmission mechanism to a tool body for performing a series of bundling operations for sending out a bundling band and winding it around a bundling object and tightening and bundling. Therefore, an operation tool that is manually operated, and a torque limiter that functions to cut off the interlock between the operation tool and the power transmission mechanism when a predetermined driving force is applied to the power transmission mechanism. , A binding tool driving human power device. The torque limiter includes an intermediate body that is moved and operated by the operated tool, a movable member that is linked to the power transmission mechanism and that is movable in the same direction as the intermediate body, and the intermediate body and the movable member. A recess formed on one of the side walls, and a clutch member supported on the other of the intermediate body and the movable member in a state of being projected and biased by an elastic mechanism so as to fit into the recess. And having
When the driving load acting on the movable member via the power transmission mechanism is a predetermined value or less, the clutch member is fitted in the recess, and the intermediate body and the movable member move integrally, and When the driving load exceeds a predetermined value, the force to push the clutch member back to the other side by the component force due to contact with the inclined surface formed in the recess exceeds the protruding biasing force by the elastic mechanism. The binding tool driving human power device according to claim 1, wherein the clutch member is set so as to come out of the recess.   The binding tool driving human power device according to claim 2, wherein the concave portion is provided in the movable member, and the clutch member and the elastic mechanism are provided in the intermediate body.   The binding tool driving human power device according to any one of claims 1 to 3, wherein the operated tool is a swing pedal that can be stepped on freely.   The movable member and the intermediate body are fitted and supported so as to be vertically slidable in a state of being opposed to a vertical frame that is erected on a base member that pivotally supports the swing pedal. 5. The bundling tool driving human power device according to claim 4, further comprising a contact member for receiving a pedal force of the dynamic pedal and forcibly descending and sliding. The vertical frame is formed with a support portion for receiving the Bowden wire outer cable constituting the power transmission mechanism, and the movable member is formed with a connecting portion for connecting the Bowden wire inner cable. The bundling tool driving human power device according to claim 5.

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