JP3666817B1 - Piercing punch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of parts, the structure is easy and the cost is low in order to meet the social request that it is better to have only one part when considering that it is disposable. Ensure good piercing needle 2 firing.
A locking ammunition 9 is provided that locks an injection shaft 8 in a pre-launch posture and moves a movable body 5 moved rearward in a post-launch posture. The locking ammunition 9 is locked. By moving the movable body 5 backward, the locking of the injection shaft 8 by the locking ammunition 9 is released and the earlobe 13 is pierced. Thus, the piercing punch for returning the movable body 5 to the pre-launch posture was obtained.
[Selection] Figure 4

Description

  The present invention belongs to the technical field of disposable piercing punches.

In general, among these types of piercing punches, there are those in which a piercing needle is instantaneously ejected using an urging force of an ammunition, and the piercing needle is passed through the earlobe.
As such, the injection shaft configured to be ejected by receiving the urging force of the ammunition is locked by the locking member and held in the initial posture after the injection, and is engaged in conjunction with the movement of the movable body. It is known that the locking member is unlocked and the injection shaft is moved by receiving the urging force of the machine, and thereby the piercing needle is fired to instantaneously perforate (for example, Patent Document 1). reference).
JP 2002-85121 A

By the way, it is necessary to prevent the locking member from inadvertently releasing the lock, so that the locking member is supported by a support portion protruding from the movable body, and the movable body is moved. If the movable part is moved further before the support part is removed from the latching member by the above and the movable body is further moved, the projection provided in a rod shape on the movable body forcibly moves the latching member to the lower side to release the latching. In this way, the injection shaft is injected.
However, in this case, there is a slight time difference between when the locking member is no longer supported by the support portion and becomes unstable until the locking member is forcibly moved. During this time, the locking member is locked. When it is released and the piercing needle is fired, the piercing needle does not penetrate sufficiently where it is supposed to be fired when the piercing needle is not sufficiently close to the earlobe, and the perforation is made at a shifted place There is.
Furthermore, in this case, since the movable body is returned after drilling, a separate return ammunition is required, which requires a large number of parts, a complicated structure and high cost, and the number of parts, especially considering that it is disposable. There is also a problem from a social request that it is better to have at least one of them, and there are problems to be solved by the present invention.

The present invention has been made in view of the above circumstances and has been created for the purpose of solving these problems. The invention of claim 1 includes a piercing needle for piercing the earlobe, and an interior of the piercing needle. A main body for injecting, an injection shaft for injecting the piercing needle, an injection ammunition for urging to inject the injection shaft, a locking means for locking the injection shaft in a pre-launch posture, and moving to the main body A movable body that fits freely, and a catcher holding portion that is provided on the movable body and holds a catcher for receiving an ejected piercing needle, the movable body being the main body to bring the catcher holding portion closer to the main body In order to release the locking of the locking means and to inject the injection shaft by relative movement with respect to the locking means, one end of the locking means is supported through the through-hole provided on the main body side. , The penetrating tip is releasably locked to the injection shaft The other end of the locking bullet is moved to the through hole while being elastically deformed to unlock the injection shaft by being locked to the movable body relatively moving toward the main body. In this way, the movable body is a piercing punch, wherein the catcher holding portion moves in a direction away from the main body in response to the restoring force of the elastically deformed locking bullet.
The invention of claim 2 is characterized in that, in claim 1, the locking ammunition is set so as not to come out of the through hole even if the injection shaft is moved to the unlocking posture. It is a punch.
According to a third aspect of the present invention, in the first or second aspect, the locking ammunition is in contact with the pedestal provided at the other end on the main body side in a state before the movable body is moved relative to the main body. A piercing punch characterized by being in contact with each other.
A fourth aspect of the present invention is the piercing punch according to any one of the first to third aspects, wherein the movable body moves while being guided by a rib provided on the main body.
A fifth aspect of the present invention is the piercing punch according to the fourth aspect, wherein the rib is provided on a pedestal.
According to a sixth aspect of the present invention, in any one of the first to fifth aspects, between the main body and the movable body, relative movement of the movable body relative to the main body more than when the locking ammunition assumes a predetermined post-launch posture. A piercing punch having a stopper for regulating.
A seventh aspect of the present invention is the posture according to any one of the first to sixth aspects, wherein the locking bullet machine is configured by a leaf spring, the other end is set linearly from the through hole, and is bent by elastic deformation due to relative movement of the movable body. Thus, the piercing punch is characterized in that it is configured to be in the unlocking posture.
According to an eighth aspect of the present invention, in any one of the first to seventh aspects, the through hole holds the locking bullet machine long from the front and back in the moving direction of the injection shaft toward the other end of the locking bullet machine. Is a piercing punch for piercing.
According to a ninth aspect of the present invention, in the eighth aspect of the present invention, the long pinching of the through hole toward the other end side of the locking bullet machine is performed from the pedestal where the through hole guides and supports the injection shaft to the other end side of the locking bullet machine. A piercing punch for piercing characterized in that it is formed by projecting into
A tenth aspect of the present invention is the piercing punch according to the ninth aspect, wherein the protruding length of the through hole in the front-rear direction of the injection axis movement is longer on the rear side.

According to the invention of claim 1, the injection shaft causes the locking bullet machine locked in the pre-injection posture to be elastically deformed by the movement of the movable body and to move the penetrating tip portion downward on the through hole side. As a result, the locking ammunition is stably supported by the movable body until the locking is released, and the piercing needle can be reliably fired in a timely manner. Since the bullet-stopper is also used as the return bullet, the number of parts is small and the structure can be simplified.
According to the invention of claim 2, the locking ammunition does not come out of the through hole, and the restoring force of the locking ammunition can be ensured.
According to the invention of claim 3, when restoring from the post-launch posture to the pre-launch posture direction, the lower end of the locking ammunition hits the rear surface of the pedestal 6 or surely returns to the vicinity thereof, It can be avoided that the lower end portion comes into contact with the lower surface plate of the main body at an early stage and the return becomes insufficient, causing the movable body to return insufficiently and the catcher not coming out.
According to the invention of claim 4, since the movable body is fitted in the main body and supported by the rib from the lower side and the downward movement is restricted, The end can be securely locked.
According to the invention of claim 5, since the interval between the fitting portion with the main body and the rib can be set wide, the locking ammunition can be more reliably locked to the other end portion.
By setting it as invention of Claim 6, the movement control more than necessary with respect to the main body of a movable body can be performed.
According to the seventh aspect of the invention, the locking ammunition can reliably hold the injection shaft in the pre-launch posture, and the elastic ammunition during the elastic deformation from the pre-launch posture to the post-launch posture. However, the through-hole moves slightly toward the injection shaft, and the locking of the injection shaft from the locked holding state is surely released.
With the invention according to claim 8, the through support by the through hole of the locking bullet machine is ensured.
By setting it as invention of Claim 9, the structure of the through-hole for supporting a latching ammunition machine long is simplified.
According to the tenth aspect of the present invention, the length of the latching ammunition may be shortened as much as the through hole protrudes, and the return of the latching ammunition to be substantially linear can be ensured.

  Next, embodiments of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a piercing punch, and the piercing punch 1 includes a main body 3 that holds the piercing needle 2 in an initial posture and a catcher 4 into which the tip of the fired piercing needle 2 is fitted. The movable body 5 to be accommodated is provided.

  The main body 3 is formed as a substantially rectangular shape by abutting and assembling the half-shaped case bodies 6, 7. A plurality of these case bodies 6, 7 are formed on one case body 6. The only difference is that the assembly pin 7a protruding from the other case body 7 so as to correspond to the assembly hole 6a is fitted into the assembly hole 6a, and the other parts described later are symmetrical. Since it is the same except for the shape, one case body 6 will be described in detail below, and the other case body 7 will be described in detail only by showing a drawing symbol (the same alphabet) in the drawing. Is omitted. As for “front” and “rear”, as will be described later, the direction in which the piercing needle 2 is fired is defined as front and the opposite direction is defined as rear for convenience.

The case body 6 is surrounded on both sides by upper and lower double-sided plates 6b and 6c, a rear plate 6d, and a side plate 6e, and the front plate 6s is open with a protruding portion 6f formed in the lower half, As will be described later, the movable body 5 can be incorporated in a slide shape. 6g is a partition plate which is located between the upper and lower double-side plates 6b and 6c and is formed in parallel with the upper and lower double-side plates 6b and 6c. The injection shaft 8 is disposed between the partition plate 6g and the upper surface plate 6b. A guide portion 6h for guiding in the front-rear direction is formed. A through-hole 6i is formed in the middle part in the front-rear direction of the partition plate 6g. In the present embodiment, the through-hole 6i is a front-rear support that projects downward from the partition plate 6g across the through-hole 6i. Between the opposing faces of the supporting pieces 6j and 6k facing each other, the supporting pieces 6j and 6k are spaced apart from each other and vertically spaced from each other by the hooks 6l and 6m facing each other. The upper end portion (one end portion) is configured as a through hole 6i in a state where the upper end portion (one end portion) is penetrated between the front and rear.
In the present embodiment, two protrusions 6l and 6m are formed, and the front support piece 6j is shorter by one protrusion than the rear support piece 6k.

The injection shaft 8 is formed by front and rear small-diameter portions 8a and 8b that are long in the front-rear direction and a large-diameter portion 8c that is formed like a bowl between the small-diameter portions 8a and 8b. The rear end of the injection shaft 8 is restricted by the front end surface of the diameter portion 8c being detachably locked with the penetrating tip 9a of the locking bullet machine 9 penetrating the through hole 6i. . The penetrating tip portion 9a has a shape that opens upward so as to cover the rear small diameter portion 8a of the injection shaft 8, and is configured to be movable up and down through the through hole 6i.
The injection shaft 8 is elastically inserted between the rear side surface of the large diameter portion 8c and the closing plate 11 that closes the front end surface of the guide portion 6h. So that it is held back.

  A housing chamber 6n for housing the piercing needle 2 is formed by a partition wall 6o at the rear end portion of the guide portion 6h. In the locked state, the rear end of the front small-diameter portion 8a is provided in the partition wall 6o. Inserted to support the front end and, as will be described later, the locking of the injection shaft 8 by the locking bullet 9 is released, and the injection shaft 8 was injected by receiving the biasing force of the injection bullet 10 At this time, a sliding hole 6p for slidingly guiding the front small diameter portion 8a is formed so that the injection shaft 8 does not sway from front to back and from side to side (does not shift in position), and the injected injection shaft 8 has a large diameter portion 8c. It abuts against the rear side surface of the partition wall 6o so that the injection shaft 8 does not move further back.

  Further, the accommodation chamber 6n is divided into two parts, and a holding tool 12 for holding the piercing needle 2 in a holding state with the needle portion 2a protruding is received, and the holding tool 12 is When it is fired from the storage chamber 6n by the rear end of the ejected injection shaft 8, it breaks into two parts and falls off, and the piercing needle 2 receives the firing force and penetrates the earlobe 13 to penetrate. Yes.

  On the other hand, the movable body 5 includes a slide portion 5a that is inserted and slidably guided from the opening end 6t side of the main body protruding portion 6f, and a needle portion 2a tip portion of the piercing needle 2 stuck in the earlobe 13 in a light press-fit state. The upright portion 5c is formed with a catcher holding portion 5b for receiving the catcher 4 for accommodating the catcher 4 that is formed with a through hole 4a penetrating therethrough and prevents the piercing needle 2 from coming off, and is substantially L-shaped. A pair of upper and lower slide protrusions 5d and 5e are formed on the slide portion 5a, and the slide protrusions 5d and 5e are slidably guided in slide grooves 6q and 6r formed on the main body 3 side, whereby the piercing needle 2 Can be slid to the post-launch posture after firing the piercing needle 2 from the pre-launch posture before firing the movable body 5, but the movable body 5 is formed to project upward at the intermediate portion in the front-rear direction of the slide portion 5a. Stepped Stopper portion 5f is adapted to move in a direction escaping to the front side from the pre-firing position by contact from the inside to the body front panel 6s is restricted. Further, the rear side of the upright portion 5c is in contact with the opening end 6t of the projecting portion 6f of the main body 3, and a stopper S is provided for restricting rearward movement beyond the post-launch posture. And the rear-end part of the movable body 5 is comprised by the inclined surface inclined so that it might become so low that the rear end side, and the rear end is formed in the sharp latching protrusion 5g.

  Further, the latching ammunition 9 has a lower end portion folded back in a hook shape (substantially letter-shaped in the present embodiment) toward the rear side to form a latching portion 9b, and the lower end of the latching portion 9b. However, the pedestal 6u is brought into contact with the pedestal 6u protruding from the main body lower surface plate 6c from the upper side in a substantially linear posture, and the pedestal 6u locks the injection shaft 8 in the pre-launch posture by the penetrating tip 9a. The retaining ammunition 9 in the holding posture is prevented from being removed. When the tip of the locking projection 5g comes into contact with the front surface of the locking bullet machine 9 in this pre-launch posture, the movable body 5 is inadvertently moved backward from the pre-launch posture. The rearward movement is restricted by receiving the urging force of the bullet-stopper 9, and the posture before firing is maintained. Incidentally, the pedestal 6u is disposed at a substantially hanging position of the through hole 6i, and is slightly in front of a position where the locking portion 9b of the substantially linear locking bullet machine 9 abuts (a substantially hanging position of the through hole 6i). A rib 6v protruding upward is formed, and the rib 6v slides on and supports the lower side of the slide portion 5a of the movable body 5 that moves back and forth. The rib 6v may be provided behind the pedestal 6u. Further, the pedestal 6u can be slidably in contact with the lower side of the slide portion 5a so as to be guided and moved.

  In the pre-launch posture, the earlobe 13 (the part to be drilled) is positioned between the upright portion 5c and the rear plate 6s, and the movable body 5 is relatively moved to the side closer to the main body 3 by the gripping force of the hand or finger. Then, the locking projection 5g is locked to the locking portion 9b, the locking bullet 9 is elastically deformed rearward, and the locking bullet 9 is forcibly moved in the direction of being extracted from the through hole 6i, thereby penetrating. The locking of the wire end portion 9a with respect to the large diameter portion 8c is released, and thus the injection shaft 8 is released from the locking and holding state, and is ejected by the urging force of the injection ammunition 10. Thus, the piercing needle 2 is fired to pierce the earlobe 13. After the drilling, when the hand is released from the movable body 5, the movable body 5 receives the restoring force of the elastically deformed locking bullet machine 9 and moves to the pre-launch posture side, whereby the catcher 4 is moved to the movable body. The punching is ended because it is deviated from 5. Note that the amount of movement (return) of the movable body 5 toward the pre-launch posture is sufficient if the catcher 4 is disengaged from the movable body 5 and does not necessarily return to the pre-launch posture. In this embodiment, It is set to return until the locking portion 9b of the locking ammunition 9 that has moved in the direction of coming out of the through hole 6i comes into contact with the rear stepped portion of the base 6u.

  In the embodiment of the present invention configured as described above, the piercing punch 1 is set so that the earlobe 13 is positioned between the main body front plate 6s and the movable body catcher holding portion 5b in the pre-launch posture (see FIG. 4 (A)), in this state, when the movable body 5 is moved rearward relative to the main body 3 by the gripping pressure, the locking projection 5f is locked to the locking portion 9b, and the locking portion 9b is forced to move further backward beyond the pedestal 6u, so that the locking bullet 9 is bent backward and elastically deformed from a substantially linear posture of the pre-launch posture, and the penetrating tip portion 9a has a through-hole. Move downward in the direction of exiting 6i. When the penetrating tip 9a moves downward to a predetermined position where it does not come into contact with the injection shaft large diameter portion 8c, the locking of the injection shaft 8 is released (see FIG. 4B), and the injection shaft 8 is synchronized with this timing. In response to the urging force of the injection ammunition 10, the piercing needle 2 is instantaneously fired from the receiving chamber 6n together with the holding tool 12 in response to the radiant power. Then, the piercing needle 2 breaks into two due to the holding tool 12 coming out of the storage chamber 6n and falls off, thereby piercing the earlobe 13 (see FIG. 5A). Before that, when the hand is released from the movable body 5, the locking bullet 9 moves the movable body 5 away from the main body 6 by pushing back the movable body 5 by the restoring force from the elastic deformation state. The post-returning posture (see FIG. 5 (B)) is made, the catcher 4 is detached from the movable body 5, and the drilling operation is completed.

  As described above, in the embodiment in which the present invention is implemented, the locking bullet machine 9 can continue the stable locking of the injection shaft 8 from the pre-injection posture to immediately after the post-launch posture. In addition to being able to fire reliably, the locking ammunition 9 that locks the injection shaft 8 is also used as the return ammunition of the movable body 5, so that the number of parts is small and the structure can be simplified. become.

  Further, the movable body 5 is restricted from moving too much by bringing the main body 3 into contact with the movable body 5 constituting the stopper S after the firing operation of the piercing needle 2, and the through hole 6i As a result of projecting downward from the partition plate 6g and holding the top and bottom wide, it is avoided that the locking bullet 9 is pulled out of the through hole 6i, and the return bullet of the movable body 5 The function as can be reliably performed.

  Further, it is assumed that the locking bullet machine 9 is partially pulled out from the through-hole 6i and the length of the lower part from the through-hole 6i is longer in the post-launch posture than in the pre-launch posture. In the posture, as a result of being supported by the high pedestal 6u protruding upward from the main body lower surface plate 6c, the locking portion 9b forcibly moved backward beyond the pedestal 6u is in the return direction by the protrusion (thickness) of the pedestal 6u. When there is a certain amount of movement and when the post-launch posture is restored to the pre-launch posture direction, the latching portion 9b hits the rear surface of the pedestal 6u or surely returns to the vicinity thereof. It can be avoided that 9b hits the main body lower surface plate 6c at an early stage, and the return becomes insufficient and the movable body 5 is insufficiently returned, so that the catcher 4 does not come out.

  The pedestal 6u is provided with a rib 6v that protrudes upward. The rib 6v restricts the movable body locking projection 5g from being unintentionally detached from the locking portion 9b due to a downward movement. Since the locking protrusion 5g is guided in the supported state, it is possible to reliably prevent the locking protrusion 5g from being locked to the locking portion 9b and to prevent the piercing needle 2 from firing poorly. Further, the rib 6v cooperates with the slide grooves 6q and 6r to stably support the front and rear of the movable body 5, so that the movable body 5 can be surely moved and the locking portion of the locking protrusion 5g can be secured. Locking to 9b is further ensured.

  Furthermore, the locking ammunition 9 has a substantially linear posture in the pre-launch posture, and is built in the main body 3 with the state where the lower end of the locking portion 9b is in contact with the main body base 6u as a natural posture. When an unintended force acts or the movable body 5 tries to move forward, it exerts an urging force that resists the movement, and the rearward movement of the movable body 5 is restricted. It is possible to contribute to prevention of inadvertent firing of the piercing needle 2 other than moving the movable body 5 by operating.

  Further, the through hole 6i is formed in a state where the front and rear support pieces 6j, 6k extending downward from the partition plate 6g are opposed to each other and are widened in the vertical direction. It is possible to make it possible to earn a moving distance in the downward pulling direction that becomes the post-launch posture of the locking ammunition 9, and to avoid the locking ammunition 9 from easily coming out of the through hole 6i, Thus, it is possible to reliably support the upper end of the locking bullet machine 9 that is elastically deformed in a curved shape in the post-launch posture.

Further, since the front and rear support pieces 6j, 6k forming the through hole 6i have a hook shape, it is easy to set the locking bullet machine 9 to the through hole 6i. Since the front side of the bullet penetrating tip 9a is supported by the partition plate 6g, the length of the bullet portion protruding from the divider plate 6g to lock the injection shaft 8 of the penetrating tip 9a is the length. For this reason, the penetrating tip 9a can hold and hold the injection shaft 8 with a strong elastic force, and the penetrating tip 9a is elastically deformed against the urging force of the injection bullet machine 10 and is careless. Can be prevented from being injected.
In addition, the locking portion 9b of the locking bullet machine 9 in the post-launch posture, which is in a substantially linear posture, has a lower side and a front side as the lower side and the front side are supported by the base 6u and the locking projection 5f of the movable body 5, respectively. On the other hand, the penetrating tip portion 9a protrudes upward from the through hole 6i and is engaged with the front side of the large-diameter portion 8c of the injection shaft 8, thereby restricting the movement. Reliable locking and holding of the injection shaft 8 in the pre-launch posture by the bullet stop 9 is performed.

It is a disassembled perspective view of the punch for piercings. (A), (B), (C) is the front view of a case body, a rear view, and an inner side view, respectively. (A), (B), (C), (D), and (E) are a front view, a side view, a rear view, a plan view, and a bottom view of the movable body, respectively. (A), (B) is an action explanatory view of a posture before launch and a posture at the time of releasing a lock, respectively. (A), (B) is an action explanatory view of a post-launch posture and a post-return posture, respectively.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Piercing punch 2 Piercing needle 3 Main body 4 Catcher 5 Movable body 5a Slide part 5b Catcher holding part 5g Locking protrusion 6 Case body 6c Bottom plate 6g Partition plate 6h Guide part 6i Through-hole 6j, 6k Support piece 6l, 6m Projection 6s Front plate 6t Open end 6u Base 6v Rib 8 Injection shaft 8a Rear side small diameter part 8b Front side small diameter part 8c Large diameter part 9 Engagement machine 9a Penetrating tip 9b Engagement part 10 Injection ammunition 13 Earlobe S Stopper

Claims (10)

A piercing needle for piercing the earlobe, a main body in which the piercing needle is installed, an injection shaft for injecting the piercing needle, an injection ammunition for urging to inject the injection shaft, and the injection shaft before firing A locking means for locking to the posture; a movable body that is movably fitted to the main body; and a catcher holding portion that is provided on the movable body and holds a catcher for receiving the injected piercing needle. In order to release the locking of the locking means by moving the movable body relative to the main body so as to bring the catcher holding part closer to the main body and to inject the injection shaft,
The locking means is a locking bullet machine in which one end is penetrated and supported in a through hole provided on the main body side, and a penetrating tip is detachably locked to an injection shaft.
The other end of the locking bullet machine is moved to the through hole while being elastically deformed so as to be locked to the movable body that moves relative to the main body side to release the locking of the injection shaft,
The piercing punch, wherein the movable body is configured to move in a direction in which the catcher holding portion moves away from the main body in response to the restoring force of the elastically deformed locking bullet.   2. The piercing punch according to claim 1, wherein the locking ammunition is set so as not to come out of the through hole even when the injection shaft is moved to the unlocking posture.   3. The locking ammunition according to claim 1, wherein the other end is in contact with a pedestal provided on the main body side in a pre-injection posture before the movable body moves relative to the main body. Piercing punch for piercing.   4. The piercing punch according to claim 1, wherein the movable body moves while being guided by a rib provided on the main body.   The piercing punch according to claim 4, wherein the rib is provided on a pedestal.   In any one of Claims 1 thru | or 5, between the main body and a movable body, the stopper which controls relative movement with respect to the main body of the movable body more than the latching ammunition was in the predetermined post-launch posture is provided. A piercing punch for piercing.   7. The locking release machine according to claim 1, wherein the locking bullet machine is configured by a leaf spring, the other end is set linearly from the through hole, and is bent by elastic deformation due to relative movement of the movable body. It is comprised so that it may become. The punch for piercings characterized by the above-mentioned.   8. The piercing hole according to any one of claims 1 to 7, wherein the through-hole holds the locking bullet machine long from the front and rear of the injection shaft in the moving direction toward the other end of the locking bullet machine. vessel.   In Claim 8, the long holding | grip which faces the locking bullet machine other end part side of a through-hole is formed so that a through-hole may protrude in the other end part side of a locking bullet machine from the base which guides and supports an injection shaft. Piercing punch characterized in that it is performed in   The piercing punch according to claim 9, wherein the protruding length of the through hole in the front-rear direction of the injection axis movement is longer on the rear side.

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