JP6583835B2 - Tweezers with lock function - Google Patents

Description

  The present invention relates to a tweezers with a lock function that can freely and continuously adjust the clamping force at the tip of the tweezers.

Conventionally, a tweezer with a lock function as shown in the following Patent Document 1 is known.
Patent Document 1 discloses a device for tweezers, which is named “tweezers” and is related to tweezers that pinch a small object, and can maintain the pinched state of the tweezers.
The tweezers, which is a device disclosed in Patent Document 1, is formed by forming a long hole on the former end side of an object that forms the main body of the tweezers, and inserting a stopper that is slidable into the long hole. .
According to the invention disclosed in Patent Document 1 as described above, the tweezers can be held by adding a simple structure to the conventional tweezers. Thus, there is no need for troublesome work such as re-clamping with tweezers.

In addition to the tweezers with a lock function disclosed in Patent Document 1 described above, Patent Document 2 discloses a tweezer that can adjust the width of the interval between the pinching portions of the tweezers.
The invention disclosed in Patent Document 2 includes and holds a tweezer fixed part / tweezer movable part that serves as a grip part and a mechanism part that moves the tweezer movable part and adjusts the opening width of the tweezer tip. The opening width of the tweezers tip can be adjusted according to the size of the object.
According to the invention disclosed in Patent Document 2 as described above, the object can always be gripped by the force of pressing the tweezers by adjusting the opening degree of the tip of the tweezers once according to the size of the object. Moreover, it has the effect that the repulsive force within the elastic limit of tweezers is not applied to the object.

Japanese Utility Model Publication No. 48-109994 JP-A-6-155317

However, in the device disclosed in Patent Literature 1, although the pinching portion at the tip of the tweezers can be locked in a closed state, the strength of the pinching force at the tip of the tweezers cannot be changed in that state. It was.
Accordingly, the operator cannot freely select to pinch the object to be pinched with one tweezers or to strongly pinch the object to be pinched, and thus the versatility of tweezers cannot be improved. It was.

According to the invention disclosed in Patent Document 2, although the width of the tip of the tweezers can be freely adjusted, the strength of the pinching force is reduced with the pinching portion of the tip of the tweezers completely closed due to its structure. It could not be changed.
Therefore, as in the case of the device disclosed in Patent Document 1, it is not possible to choose to gently hold the object to be held with one tweezers or to strongly hold the object to be held, and the tweezers are highly versatile. Could not be provided.

  The present invention has been made in view of such a conventional situation, and can lock the tip of the tweezers in a closed state and continuously adjust the strength of the pinching portion of the pincer at the tip of the tweezers. It is to provide tweezers with a lock function that can perform the above.

The tweezers with a lock function according to the first invention for solving the above-described problem includes a pair of clamping parts for gripping an object to be clamped, and a long hole continuously drilled in the overlapping part when viewed from the side. And a tweezers comprising: a gripping part extending to each of the pair of sandwiching parts; and a connecting part formed by integrally joining ends of the gripping part on which the clamping part is not extended; A bolt having a head and a shaft suspended from the head, the shaft being inserted into the long hole, and a nut screwed into the shaft led out from the long hole; , Are provided.
In the first invention having the above-described configuration, the pinching portion of the tweezers is operated by the gripping portion to have an action of picking the object to be pinched or releasing the pinched object to be pinched. Further, the gripping portion of the tweezers has an effect that the operation of the clamping portion can be operated indirectly. Further, the tweezers connecting portion has an effect of integrating the pair of gripping portions including the clamping portions so as not to be separated from each other. Further, the long hole formed in the gripping portion of the tweezers has an effect of inserting a shaft of a bolt that functions as a lock structure of the tweezers and sliding the shaft in the longitudinal direction of the long hole.
Moreover, a volt | bolt and a nut (lock structure) have the effect | action of switching the locked state of a tweezers, and its cancellation | release state by sliding the long hole formed in the holding part of a tweezers.
More specifically, when a lock structure in which a nut is screwed onto a bolt shaft is arranged on the pinching portion side of a long hole formed in the tweezers, the opening operation of the gripping portion is caused by the bolt head and the nut. As a result, the clamping portion is locked.
On the other hand, when the above-described lock structure is disposed on the side of the connecting portion of the long hole formed in the tweezers, the locking state is released because the opening operation of the gripping portion of the tweezers is not hindered by the head of the bolt and the nut. .
Further, the bolt and the screw which are the lock structure in the first invention have an effect that the distance between the head of the bolt and the nut can be changed as desired. In this case, when the distance between the bolt head and the nut is reduced in the state where the lock structure is arranged on the holding part side of the long hole of the tweezers, the action of increasing the holding force in the holding part is When the distance between the head of the bolt and the nut is increased, the clamping force at the clamping part is reduced.

The tweezers with a lock function according to the second invention is the first invention described above, and is characterized in that a screw portion is provided in the entire region on the peripheral side surface of the shaft portion.
In addition to the same operation as that of the above-described first invention, the second invention having the above-described configuration is provided with a threaded portion in the entire region of the shaft portion of the bolt, thereby reducing the distance between the pair of gripping portions in the tweezers. It has the effect | action of narrowing to the maximum and maximizing the clamping force of the to-be-clamped target object which arises in a clamping part.

The tweezers with a lock function according to a third invention is the first or second invention described above, and the maximum diameter thereof is smaller than the diameter of the head of the bolt and is interposed between the head of the bolt and the tweezers. A first washer provided, and a second washer having a maximum diameter smaller than the diameter of the nut and interposed between the nut and the tweezers. In the third aspect of the present invention, the first washer is provided between the head of the bolt and the tweezers, and the nut and the tweezers in addition to the same action as that of the first or second aspect of the invention. Since the second washer is interposed between them, the bolt head or nut is easily picked and operated by the fingertip.

The tweezers with a lock function according to a fourth invention is the third invention described above, wherein the first washer is integrally fixed to the head of the bolt, and the second washer is integrally fixed to the nut. It is characterized by being.
According to the fourth aspect of the present invention, in addition to the same action as that of the above-described third aspect, the first washer is integrally provided on the head of the bolt, and the second washer is integrally provided on the nut. Thus, the bolt head or nut can be easily picked and operated with a fingertip.
In addition, even if the bolt head or nut is loosened, the first or second washer will not move or come off, so that the operability of the fourth invention is also improved from this point. Has an effect.

The tweezers with a lock function according to a fifth aspect of the present invention is any one of the first to fourth aspects of the present invention, and is characterized by including a handle provided on the head of the bolt and / or the nut. Is.
In the fifth aspect of the present invention, the bolt head and / or nut includes a handle in addition to the same actions as the actions of the first to fourth inventions described above, so that the bolt head and / or Or it has the effect | action of improving the operativity by the fingertip of a nut.

The tweezers with a lock function according to the sixth invention is any one of the first to fifth inventions, and instead of the bolt, a second nut corresponding to the head of the bolt and a shaft of the bolt And a corresponding screw rod.
According to a fifth aspect of the present invention, the bolt is replaced with a second nut and a threaded rod in each of the first to fifth aspects, and the operation is the same as that of each of the first to fifth aspects. It is the same as the action by.

According to the first invention as described above, it is possible to provide a tweezers having a lock function and capable of adjusting the clamping force in the clamping part steplessly.
In this case, the object to be held can be gently picked with a weak force at the holding part of the tweezers, or the object to be held can be strongly picked with a strong force, so that various objects to be held can be held with a desired holding force. A highly versatile tweezers can be provided.

In addition to the same effect as that of the first invention described above, the second invention can reduce the distance between the pair of gripping parts close to each other on the pinching part side of the long hole of the tweezers.
Thereby, it has the effect that it can lock in the state which maximized the clamping force in the clamping part of a tweezers. As a result, a highly functional tweezers can be provided.

In addition to the effects of the first or second invention described above, the third invention can make it easier to pick the bolt head and nut of the tweezers with a lock function with a fingertip.
In this case, the operability of the tweezers with a lock function according to the third invention can be greatly improved.

In the fourth aspect of the invention, in addition to the effects of the third aspect described above, the bolt head and the first washer and the nut and the second washer are integrated. In addition, the first and second washers do not move or separate, and the operability of the fourth invention can be further improved.
Therefore, according to the tweezers with a lock function according to the fourth invention, the operability can be greatly improved as compared with the third invention.

In the fifth invention, in addition to the same effects as the effects of the first to fourth inventions described above, the bolt head and / or nut of the tweezers is provided with a handle so that the bolt head and / or Or it can make it easier to pick and operate a nut with a fingertip.
As a result, it is possible to provide a tweezer with a lock function that is more operable than the fourth invention.

  The sixth invention is such that the bolt in each of the first to fifth inventions described above is replaced with the second nut and screw rod, and the effect thereof is the first to fifth inventions described above. The effect is the same.

It is a key map of tweezers with a lock function concerning an embodiment of the invention. (A) It is a side view which shows the lock release state of the tweezers with a lock function based on embodiment of this invention, (b) It is a side view which similarly shows the lock state of the tweezers with a lock function. It is a conceptual diagram which shows the modification of the volt | bolt used for the tweezers with a lock function which concerns on this Embodiment.

  A tweezer with a lock function according to an embodiment of the present invention will be described in detail with reference to FIGS.

First, an outline of the tweezers with a lock function according to the present embodiment will be described with reference to FIG.
FIG. 1 is a conceptual diagram of tweezers with a lock function according to an embodiment of the present invention.
As shown in FIG. 1, the tweezers 1 with a lock function according to the present embodiment includes a pair of sandwiching portions 2 a for gripping an object to be sandwiched, and a gripping portion 2 b extending to each of the pair of sandwiching portions 2 a. In the tweezers 2 having the grip portion 2b and the connecting portion 2c formed by integrally joining the end portions of the grip portion 2b where the clamping portion 2a is not extended, a long hole is formed in the overlapping portion of the grip portion 2b. 3, a shaft 4b of a bolt 4 is inserted into the elongated hole 3, and a nut 5 is screwed onto the shaft 4b.
In such a tweezers 1 with a lock function, a long hole 3 formed in the tweezers 2 and a bolt 4 and a nut 5 provided in the long hole 3 form a lock structure of the tweezers 2.

Moreover, in the tweezers 1 with a lock function shown in FIG. 1, the state in which the bolt 4 provided with the nut 5 is arranged on the connecting portion 2 c side of the long hole 3 formed in the tweezers 2 is a state where the lock is released.
On the other hand, in the tweezers 1 with a lock function shown in FIG. 1, a state in which the bolt 4 provided with the nut 5 is arranged on the holding portion 2a side of the long hole 3 formed in the tweezers 2 is a locked state.
And in tweezers 1 with a lock function concerning this embodiment, by using bolt 4 and nut 5 as a lock structure of tweezers 2, the distance between head 4a of bolt 4 and nut 5 can be adjusted steplessly. it can.

Here, the operation of the tweezers 1 with a lock function according to the present embodiment will be described in more detail with reference to FIG.
Fig.2 (a) is a side view which shows the lock release state of the tweezers with a lock function based on embodiment of this invention, (b) is a side view which similarly shows the lock state of the tweezers with a lock function. In addition, the same code | symbol is attached | subjected about the part same as what was described in FIG. 1, and the description about the structure is abbreviate | omitted.
As shown in FIG. 2 (a), in the tweezers 1 with a locking function according to the present embodiment, a bolt 4 that forms a locking structure at a position away from the holding portion 2a side of the long hole 3 formed in the tweezers 2 and When the nut 5 is arranged, the opening operation of the grip portion 2b of the tweezers 2 is not hindered by the head 4a of the bolt 4 and the nut 5. For this reason, the operator can freely control the pressing force of the pair of gripping portions 2b of the tweezers 2 with a fingertip, and can perform an operation of picking or releasing the object to be pinched in the pinching portion 2a.

On the other hand, as shown in FIG. 2 (b), when the bolt 4 and the nut 5 forming the lock structure are arranged at the end of the elongated hole 3 formed in the tweezers 2 on the side of the sandwiching portion 2a, The opening operation of the grip 2b of the tweezers 2 is prevented by the head 4a and the nut 5.
Usually, when the lock structure including the bolt 4 and the nut 5 is not provided, the clamping portion 2a of the tweezers 2 is in an open state unless a pressing force is applied to the gripping portion 2b of the tweezers 2 (see FIG. 2A). reference).
On the other hand, as shown in FIG. 2B, when the operation of the gripping portion 2b in the tweezers 2 is restricted by the head 4a and the nut 5 of the bolt 4, the state in which the clamping portion 2a of the tweezers 2 is closed is maintained. And become locked.
At this time, by operating the nut 5 screwed to the shaft 4b of the bolt 4 to change the distance between the head 4a of the bolt 4 and the nut 5, the opening degree of the tip of the clamping part 2a of the tweezers 2 or When the clamping part 2a is closed, the pressing force with which the tips of the clamping part 2a are pressed against each other can be adjusted.

That is, in the state shown in FIG. 2, when the distance between the head 4a of the bolt 4 and the nut 5 is increased, the clamping force of the object to be clamped (not shown) by the clamping part 2a is weakened. As the distance between the head 4a of the bolt 4 and the nut 5 is reduced, the clamping force of the object to be clamped (not shown) by the clamping part 2a increases.
As described above, according to the tweezers 1 with a locking function according to the present embodiment, the holding structure 2a of the tweezers 2 is kept closed by including the lock structure including the long hole 3, the bolt 4, and the nut 5. In addition, the clamping force of the pair of clamping parts 2a can be freely adjusted steplessly.

Therefore, according to the tweezers 1 with a lock function according to the present embodiment, a soft object to be pinched can be gently picked by the pinching portion 2a of the tweezers 2 by using the pinching force adjusting function including the bolt 4 and the nut 5. This state can be maintained, or a hard object to be pinched can be strongly picked by the pinching portion 2a to maintain the state.
As a result, according to the tweezers with a lock function 1 according to the present embodiment, it is possible to provide a tweezer with a lock function that is superior in performance and highly versatile as compared with the tweezers with a lock function according to the prior art.

Furthermore, in the tweezers 1 with a lock function according to the present embodiment, as shown in FIGS. 1 and 2, a bolt 4 having a threaded portion 4 c may be used over the entire peripheral side surface of the shaft 4 b (selective configuration). element).
In this case, the nut 5 is operated from the state shown in FIG. 2B to hold the pair of gripping portions 2b in a state where the gap between the pair of gripping portions 2b in the tweezers 2 is zero or close to zero. I can keep it.
This means that the tweezers 2 can be locked in a state in which the clamping force between the clamping parts 2a extended between the pair of gripping parts 2b is maximized.
Therefore, in the tweezers 1 with the lock function according to the present embodiment, the clamping force of the clamping part 2a of the tweezers 2 is increased to the limit by using the bolt 4 having the screw part 4c in the entire peripheral side surface of the shaft 4b. The state can be maintained.
Therefore, according to the tweezers 1 with a lock function according to the present embodiment, a lock function with higher performance than the case where the bolt 4 that does not include the screw portion 4c is used in the entire region on the peripheral side surface of the shaft 4b of the bolt 4 is used. With tweezers can be provided.

In addition, in the tweezers 1 with a locking function according to the present embodiment, as shown in FIG. 2, the diameter is smaller than the maximum diameter of the head 4 a of the bolt 4 and is fixed integrally to the head 4 a of the bolt 4. A first washer 6a provided and a second washer 6b having a diameter smaller than the maximum diameter of the nut 5 and fixed integrally with the nut 5 may be provided (selective configuration). element).
Usually, since the tweezers 2 is a hand tool that performs the operation with a fingertip, the bolt 4 and the nut 5 in the tweezers 1 with a lock function according to the present embodiment are also relatively small ones that are operated with the fingertip. .
Moreover, in the tweezers 1 with a lock function according to the present embodiment, the head 4a and the nut 5 of the bolt 4 are both in contact with or close to the grip 2b of the tweezers 2, so When picking 4a or nut 5, there is a possibility that it cannot slide well.

In view of such circumstances, in the tweezers 1 with a lock function according to the present embodiment, the first washer 6a is integrally provided on the head 4a of the bolt 4, and the second washer 6b is integrally provided on the nut 5. In the state where the bolt 4 and the nut 5 are set in the long hole 3 of the tweezers 2, the head 4a and the nut 5 of the bolt 4 are moved from the surface of the gripping portion 2b of the tweezer 2 to the first washer 6a or the second washer. It can arrange | position in the state separated only by the thickness of 6b.
In this case, as compared with the case where the first washer 6a and the second washer 6b are not provided, the head 4a of the bolt 4 and the fingertip of the nut 5 can be easily and reliably held.
Therefore, when the bolt 4 and the nut 5 of the tweezers 1 with a locking function according to the present embodiment include the first washer 6a and the second washer 6b as shown in FIG. 2, the head 4a of the bolt 4 is used. And the tweezers 1 with a locking function in which the operability of the nut 5 is excellent can be provided.

1 and 2, an example is described in which the planar shapes of the head 4a and the nut 5 of the bolt 4 are circular, but the planar shapes of the head 4a and the nut 5 of the bolt 4 are polygonal. Can be used without any problem.
In addition, when the planar shape of the head 4a of the bolt 4 and the nut 5 is a polygonal shape, the diameter is determined by a diagonal diameter.

Further, although not particularly illustrated, the first washer 6a and the second washer 6b may be provided separately without being integrally fixed to the bolt 4 and the nut 5 (selective components).
Also in this case, the diameters of the washers (the first washer 6a and the second washer 6b) provided separately are larger than the diameter of the head 4a of the bolt 4 or the diameter of the nut 5 arranged in the vicinity thereof. Small is desirable.

Finally, a modified example of the bolt 4 and the nut 5 of the tweezers 1 with a locking function according to the present embodiment will be described with reference to FIG.
FIG. 3 is a conceptual diagram showing a modification of the bolt used in the tweezers with a lock function according to the present embodiment. The same parts as those described in FIGS. 1 and 2 are denoted by the same reference numerals, and description of the configuration is omitted.
In the tweezers 1 with a lock function according to the present embodiment, instead of the bolt 4 as shown in FIGS. 1 and 2, a head 8a of the bolt 8 as shown in FIG. (Optional component). The head 8a of the bolt 8 is not limited to the shape as shown in FIG. 3, and may be any shape as long as it is formed as an end portion of the shaft 8b of the bolt 8. The shaft 8b The edge part formed in a shape may be sufficient.
The shaft 8b and the screw portion 8c of the bolt 8 shown in FIG. 3 are the same as the shaft 4b and the screw portion 4c of the bolt 4 shown in FIGS.
Although not shown in particular, in addition to the bolt 8 having such a handle 7, a nut 5 as shown in FIGS. 1 and 2 provided with the handle 7 as shown in FIG. Components).
When a handle 7 as shown in FIG. 3 is retrofitted to the bolt head and nut of the tweezers 1 with a locking function according to the present embodiment, the bolt head and nut and the inner surface of the handle 7 It is necessary to prevent slippage between the two.
As a means for that, for example, an anti-slip material is interposed between the bolt 4 or the nut 5 and the handle 7 as shown in FIGS. 1 or 2, or, for example, a bolt having a polygonal shape as shown in FIG. The handle 7 is fitted to the head 8a of the head 8 to prevent the handle 7 from slipping due to the fitting structure, or although not particularly shown, a handle is integrally provided on the head of the bolt or nut, for example, like a thumbscrew It is conceivable to use any of these, and even if any of these is adopted, the intended effect, that is, the effect of preventing the slip between the bolt head or nut and the handle 7 is exhibited. Can do.

When the tweezers 1 with a locking function according to the present embodiment includes the handle 8 on the head 8a and / or nut of the bolt 8, the head of the bolt installed in the long hole 3 of the tweezers 2 and / or Operation with the fingertip of the nut is further facilitated.
As a result, it is possible to provide the tweezers 1 with a lock function that is very easy to operate.

In addition, the volt | bolt 4 or the volt | bolt 8 in the tweezers 1 with a lock function concerning this Embodiment can be substituted to the 2nd nut and screw rod which are not shown in figure. In this case, the nut 5 in the tweezers 1 with a lock function is a “first nut”.
Also in this case, the above-mentioned operation / effect can be exhibited without any trouble.

  As described above, the present invention has a lock function that can be locked in a state where the object to be clamped is picked in tweezers, and can adjust the clamping force when picking the object to be clamped steplessly. It is a tweezer with a lock function that can be used in the technical field related to precision tools and hand tools.

  DESCRIPTION OF SYMBOLS 1 ... Tweezers with a lock function 2 ... Tweezers 2a ... Holding part 2b ... Grip part 2c ... Connection part 3 ... Long hole 4 ... Bolt 4a ... Head 4b ... Shaft 4c ... Screw part 5 ... Nut 6a ... 1st washer 6b ... Second washer 7 ... Handle 8 ... Bolt 8a ... Head 8b ... Shaft 8c ... Screw part

Claims (7)

A pair of clamping parts for gripping the object to be clamped;
A gripping part provided with a long hole continuously drilled in the overlapping part when viewed from the side, and extending to each of the pair of clamping parts;
A tweezers comprising: a connecting portion formed by integrally joining end portions on the side where the holding portion is not extended in the grip portion;
A bolt having a head and a shaft suspended from the head, and the shaft is inserted through the elongated hole;
A nut screwed into the shaft led out from the elongated hole;
A first washer having a maximum diameter smaller than the diameter of the head of the bolt and interposed between the head of the bolt and the tweezers;
A tweezers with a locking function, characterized in that it has a second washer having a maximum diameter smaller than the diameter of the nut and interposed between the nut and the tweezers.   The tweezers with a lock function according to claim 1, wherein a screw portion is provided in an entire region on a peripheral side surface of the shaft. The first washer is integrally fixed to the head of the bolt;
The tweezers with a lock function according to claim 1 or 2, wherein the second washer is integrally fixed to the nut.   The tweezers with a lock function according to any one of claims 1 to 3, further comprising a handle attached to the head and / or the nut of the bolt. A pair of clamping parts for gripping the object to be clamped;
When viewed from the side, it has a long hole continuously bored in the overlapping portion, and the pair of clamping parts are A gripping portion extending to each, and
In the grip portion, the end portion on the side where the clamping portion is not extended is integrally joined. Tweezers comprising a tie,
A first nut and a screw rod screwed into the first nut, and the screw rod Is inserted through the long hole,
A second nut screwed into the screw rod led out from the elongated hole;
The maximum diameter is smaller than the diameter of the first nut, and the first nut and the pin A first washer interposed between the set and
The maximum diameter is smaller than the diameter of the second nut, and the second nut and the pin And a second washer interposed between the set and the lock function. With tweezers. The first washer is integrally fixed to the first nut ;
The tweezers with a lock function according to claim 5 , wherein the second washer is integrally fixed to the second nut . The tweezers with a lock function according to claim 5 or 6 , further comprising a handle attached to the first nut and / or the second nut .

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