JP3210552U - Manual gear wrench - Google Patents

Abstract

Provided is a manual gear wrench capable of easily and quickly temporarily tightening a nut screwed to an anchor bolt or the like. A notch drive gear 4 having a notch 4a having the same diameter or the same diameter as the opening 2 between the opening 2 of the gripping frame f and the manual rotation gear 3, and the manual rotation gear 3. Two small-diameter gears 5 and 5 that mesh with the notch drive gear 4 at the same time are pivotally attached to the gripping frame. Further, a gear rotation direction switching mechanism a that engages with the manual rotation gear 3 and can manually switch the rotation direction of the manual rotation gear and the notch drive gear to the left rotation, the right rotation, or the free rotation is applied to the manual rotation gear. I put it in contact. [Selection] Figure 5

Description

  The present invention makes it possible to manually switch the left rotation, right rotation, or free rotation of the manual rotation gear, the small diameter gear, and the notch drive gear that are pivotally attached to the gripping frame that forms the opening into which the bolt is inserted. The present invention relates to the field of a manual gear wrench for temporary fastening capable of tightening and loosening nuts.

  Conventionally, as an auxiliary tool for an electric screwdriver, a tool described in Japanese Patent No. 6041035 of the following Patent Document 1 is disclosed. This patent was developed by the applicant of the utility model registration, and the auxiliary tool A for the electric screwdriver can freely switch the main driving gear, the notch driving gear, etc. to the left, right, or free rotation. No rotating direction switching mechanism was attached.

Japanese Patent No. 6041035

  However, in the present invention, a rotation direction switching mechanism capable of freely switching the notch driving gear meshing with the two small-diameter gears to the left, right, or free rotation is attached to the manual gear and screwed to the anchor bolt or the like. The attached nuts can be temporarily tightened, etc. very easily and quickly.

Furthermore, in the present invention, by attaching the rotation direction switching mechanism to the manual gear as described above, various operations with a small turn can be performed.

As a means for solving the problem, the device according to claim 1 is a manual rotation gear that is manually rotated by a rotating body 6 on a gripping frame f in which an opening portion 2 into which a bolt is fitted is inserted into a tip portion 1. In manual gear wrench A with 3 attached to it,
Between the opening 2 of the gripping frame f and the manual rotation gear 3, the gripping frame f having a notch 4a having the same diameter or the same diameter as the opening 2 of the gripping frame f. Between the notch driving gear 4 pivotally attached and the manual rotation gear 3, the two small diameter gears 5 and 5 meshing simultaneously with the manual rotation gear 3 and the notch driving gear 4 are opposed to the grip frame. pivot to f,
A gear rotation direction switching mechanism a that engages with the manual rotation gear 3 and can manually switch the rotation direction of the manual rotation gear 3 and the notch drive gear 4 to the left, right, or free rotation; The manual gear wrench is characterized in that the manual rotation gear 3 is switched and brought into contact with the manual rotation gear 3 and is mounted in the gripping frame f.

As a means for solving the above-mentioned problems, the invention described in claim 2 is characterized in that the rotating body 6 for rotating the manual rotation gear 3 is projected on the gripping frame f. The manual gear wrench according to claim 1.

As a means for solving the above-mentioned problems, the device according to claim 3 is characterized in that the gear rotation direction switching mechanism a is attached to the lower portion of the manual rotation gear 3 and within the gripping frame f. The left switching valve 10 is supported by the support portion 7 so that the front end portion 8 can be brought into contact with the gear portion 3a of the manual rotation gear 3 and the lower end portion 9 is supported so as not to be detached from the support portion 7. A right switching valve 11 is provided, and elastic bodies 12 and 13 are interposed between the back surface portion 10a of the left switching valve 10 and the back surface portion 11a of the right switching valve 11, and the left switching valve 10 and the right switching valve 11 In the meantime, a protrusion 15 of a rotation direction switching lever 14 of the manual rotation gear 3 provided separately is interposed, and the switching handle 16 constituting the rotation direction switching lever 14 connected to the protrusion 15 is held by the gripping member. Top surface of frame f A manual Giyarenchi according to claim 1 or 2, characterized in that it is slidably brought protrude 17.

As a means for solving the above-mentioned problems, the invention according to claim 4 is such that the left side switching valve 10 and the right side switching valve 11 have the distal end portions 8, 8 deployed outward from the lower end portions 9, 9. The manual gear wrench according to claim 1, 2 or 3, wherein the manual gear wrench is provided.

As a means for solving the above-mentioned problem, according to the invention described in claim 5, the protrusion 15 of the rotation direction switching lever 14 of the manual rotation gear 3 is a protrusion-like left protrusion that is symmetrical to the left side and the right side. The manual gear wrench according to claim 1, 2, 3, or 4, wherein 18 and a right protrusion 19 are provided.

As a means for solving the above-mentioned problems, the invention according to claim 6 is characterized in that the projecting portion 15 of the rotation direction switching lever 14 has a screw hole 15a formed on the back surface. The manual gear wrench according to 2 or 3 or 4 or 5.

Since the configuration of the manual gear wrench of the present invention is as described above, after rotating the rotation direction switching lever constituting the gear rotation direction switching mechanism to the left side, the right side or the center portion, the upper surface portion of the gripping frame The notch drive gear can be rotated in the same direction as the rotation direction in the same direction as the rotation direction of the switching lever.

  Therefore, there is an advantage that the opening part of the gripping frame and the notch part of the notch driving gear are matched, so that the bolt insertion work or the bolt removal work can be performed very easily.

Further, in the present invention, after rotating the rotation direction switching lever in a desired direction as described above, if the rotating body is rotated in the same direction as the rotation direction of the rotation direction switching lever, the main rotation gear and the notch The drive gear can also be rotated in the same direction. Therefore, there is an advantage that the nut can be temporarily tightened with a small turn.

It is a perspective view of the present invention manual gear wrench.

It is a partially cutaway perspective view of the manual gear wrench.

FIG. 3 is a partially cutaway plan view of the gear wrench of FIG. 2.

It is a top view of the state which removed the rotary body which comprises the gear wrench of the same FIG.

It is a top view of the state which removed the upper side frame of the frame which comprises the gear wrench of the same FIG.

It is a top view in the state where the upper frame of the manual gear wrench of the second embodiment is removed and the rotation direction switching lever is located at the center.

It is a top view in the state where the upper frame of the manual gear wrench of the second embodiment is removed and the rotation direction switching lever is located on the right side.

It is a rear view of the rotation direction switching lever which comprises the gear rotation direction switching mechanism which comprises the same manual gear wrench.

It is a front view of the switching lever of FIG.

  Since the embodiments related to claims 1 to 6 of the manual gear wrench of the present invention are common, they will be described collectively as follows.

  In the figure, A is a manual gear wrench having the following configuration.

That is, in the gripping frame f, the manual rotation gear 3, the two small-diameter gears 5, 5 meshing with the manual rotation gear 3, the notch drive gear 4, the gear rotation direction switching mechanism a, the rotating body 6, and the rotation direction switching. And lever 14.

  Hereinafter, examples of each of the above-described constituent members will be described.

  <Example of gripping frame f>

An embodiment of the grip frame f will be described as follows.

  The grip frame f includes a lower frame 20, an intermediate frame 21, and an upper frame 22.

The lower frame 20 and the upper frame 22 are made of thin metal plates or effective materials.

The middle frame 21 is formed with a storage portion 21a for arranging the above-described constituent members in parallel.

  Further, the lower frame 20 and the upper frame 22 have a pin hole 23 for assembling the gripping frame f and a shaft hole 24 for supporting the constituent members constituting the manual gear wrench A of the present invention. Is formed.

  The grip frame f includes openings 2, 2, 2 for inserting or removing bolts b into or from the front ends 1, 1, 1 of the lower frame 20, the middle frame 21, and the upper frame 22, respectively. Are formed in the same shape. Further, a final fastening hole 25 is formed in the rear part of each of the frames 20, 21, 22.

<Example of manual rotation gear 3>

  In the figure, reference numeral 3 denotes a manual rotation gear, and a gear portion 3a is provided on the outer periphery, and shaft portions 3b that are inserted into and supported by the lower frame 20 and the upper frame 22 are projected on the upper surface portion and the lower surface portion, respectively. ing. When the manual rotation gear 3 is assembled, the manual rotation gear 3 is inserted into the storage portion 21 a of the middle frame 21 and is inserted and assembled by the lower frame 20 and the upper frame 22.

<Examples of small-diameter gears 5 and 5>

  In the figure, reference numerals 5 and 5 denote small-diameter gears which are opposed to each other and meshed with the rotary gear 3 in the lower part and with the notch drive gear 4 in the upper part. The shape is smaller than the manual rotation gear 3 and the notch drive gear 4. And the shaft part 5a protrudes from the upper surface part and the lower surface part of the said small diameter gears 5 and 5, respectively.

  The small-diameter gears 5 and 5 are inserted into the storage portion 21 a of the middle frame 21 and are inserted and assembled by the lower frame 20 and the upper frame 22. At this time, shaft pins 5b and 5b are fitted and inserted into the central portions of the small-diameter gears 5 and 5, and both shaft pins 5b and 5b are fitted into the pin holes 23 of the lower frame 20 and the upper frame 22, The small diameter gears 5 and 5 are rotated.

<Example of Notch Drive Gear 4>

  In the figure, reference numeral 4 denotes a notch drive gear, which has the following configuration.

The notch drive gear 4 is formed with a notch 4a having the same diameter or the same diameter as the opening 2 of the gripping frame f, and a gear part 4b is formed on the outer periphery. Further, protruding shaft portions that are respectively inserted into the inner fitting insertion hole 2a connected to the opening 2 of the lower frame 20 and the inner fitting insertion hole 2a connected to the opening 2 of the upper frame 22 on the upper surface portion and the lower surface portion, respectively. 4c protrudes.

  The notch drive gear 4 configured as described above is meshed with the small-diameter gears 5 and 5 as shown in the drawing, and is fitted into the storage portion 21a of the middle frame 21, and the lower frame 20 and It is swallowed and assembled by the upper frame 22.

  Furthermore, an insertion through hole 4d into which a nut n screwed to the bolt b is fitted is formed on the inner side of the notch drive gear 4.

<Example of Rotating Body 6>

  In the figure, reference numeral 6 denotes a rotating body capable of manually rotating the manual rotation gear 3 in a freely rotatable manner.

  The rotating body 6 has a shaft rod 6b fitted into a shaft hole 3c formed in a prismatic shape on the inner side of the manual rotating gear 3 so as to protrude from the back surface of the knob portion 6a.

  As shown in the drawing, the rotating body 6 is inserted into the shaft frame 3b through the shaft hole 3c by the upper frame 22, and is fixed to the lower frame 20 with a stopper, and when the knob portion 6a is rotated, The manual rotation gear 3 rotates. The rotating body 6 is not separated by the stopper.

<Example of rotation direction switching mechanism a>

  In the figure, a is a gear rotation direction switching mechanism that can freely switch the notch drive gear 4 counterclockwise, clockwise, or rotational direction, and can be manually switched, and has the following configuration.

  The switching mechanism a is attached to the lower part of the manual rotation gear 3 and is provided below the recesses 7a and 7a formed on the upper surface of the support part 7 fixed in the storage part 21a of the gripping frame f. The left switching valve 10 and the right switching valve 11 into which the parts are inserted are fitted, and the tip end portions 8 and 8 are formed to have a length capable of contacting the gear portion 3 a of the manual rotation gear 3.

  The two left side switching valves 10 and the right side switching valve 11 are slightly open in an inverted eight shape.

  Elastic bodies 12 and 13 that always press the switching valves 10 and 11 are interposed in the back surface portions 10a and 11a of the left switching valve 10 and the right switching valve 11, respectively. The elastic bodies 12 and 13 usually use springs, but are not limited.

  Then, a protrusion 15 of a rotation direction switching lever 14 of the manual rotation gear 3 provided separately is interposed between the left switching valve 10 and the right switching valve 11. Further, a switching handle 16 comprising the rotation direction switching lever 14 connected to the protruding portion 15 is slidably provided on the upper surface portion 17 of the gripping frame f.

Further, the projecting portion 15 of the rotation direction switching lever 14 of the manual rotation gear 3 is provided with a symmetrical projecting left projecting portion 18 and right projecting portion 19 on the left side surface portion and the right side surface portion, respectively.

The protrusion 15 of the rotation direction switching lever 14 has a screw hole 15a formed on the back surface. A stopper is screwed into the screw hole 15a from the lower frame 20 when assembled.

<Switching operation method for the rotation direction switching lever 14>

  First, the operation when the switching handle 16 of the switching lever 14 is turned to the center will be described.

  A state when the switching handle 16 is set at the position shown in FIG. 6 will be described.

  As described above, when the switching handle 16 is located at the central portion, the left projecting portion 18 and the right projecting portion 19 constituting the switching handle 16 make the left switching valve 10 and the right switching valve 11 outward. It is in a pressing state.

  That is, when the two switching valves 10 and 11 are pressed outward, the tip portions 8 and 8 of the switching valves 10 and 11 are not in contact with the gear portion 3a of the manual rotation gear 3. State. Therefore, the manual rotation gear 3 can freely rotate counterclockwise or clockwise. The notch drive gear 4 meshed with the small diameter gears 5 and 5 is also rotatable in the same direction as the manual rotation gear 3.

  Therefore, it becomes very easy for the notch portion 4a of the notch driving gear 4 to coincide with the opening 2 of the gripping frame f.

  As described above, when the opening 2 of the gripping frame f and the notch 4a of the notch drive gear 4 match, the insertion or removal operation to the bolt b can be performed very easily and quickly.

  The above operation can be performed very smoothly if the rotating body 6 of the manual rotation gear 3 is held with fingers.

  Second, when the switching handle 16 is rotated to the right, the right switching valve 11 is pushed as shown in FIG. Therefore, the elastic body 13 on the right side is pressed, the elastic body 12 on the left side is extended, the front end portion 8 of the left switching valve 10 contacts the gear portion 3a of the manual rotation gear 3, and the manual rotation gear 3 is Rotation is limited to rotation only, and counterclockwise rotation is impossible and counterclockwise rotation is not possible. Therefore, the work of unscrewing the nut n can be performed.

  Next, when the switching handle 16 is rotated leftward, the manual rotation gear 3 is counterclockwise and cannot be clockwise, contrary to the case described in the second case. Accordingly, the nut n can be temporarily tightened.

  As each of the rotating means, the rotating body 6 is pinched and rotated.

  By the respective rotations described above, the notch portion 4a of the notch driving gear 4 and the openings 2, 2, and 2 of the frames 20, 21, and 22 are matched or closed.

  Since various operations can be processed with a small turn by the rotation operation as described above, the gear wrench A of the present invention has various advantages excellent in practicality.

  Reference numeral 26 denotes a conversion socket.

  The present invention is used as a temporary tightening wrench. In the final tightening operation, a separate socket 26 is fitted into the final tightening wrench hole 25 in the handle portion, and the final tightening is manually performed.

  b is a bolt and n is a nut.

  Reference numeral 27 denotes a lock cover used during a nut feeding operation for sliding.

  Although the embodiments have been described with reference to the drawings, the present invention is not limited to the illustrated examples, and includes a range of design changes and application variations that are usually made by those skilled in the art without departing from the technical idea thereof. I will mention that just in case.

A Manual gear wrench a Rotation direction switching mechanism b Bolt f Grasping frame n Nut 1 Tip 2 Opening 2a Inner fitting insertion hole 3 Manual rotation gear 3a Gear 3b Shaft 3c Shaft hole 4 Notch drive gear 4a Notch 4b Gear Part 4c Shaft part 4d Fit-through hole 5 Small diameter gear 5a Shaft part 5b Shaft pin 6 Rotating body 6a Knob part 6b Shaft rod 7 Bearing part 7a Recessed part 8 Tip part 9 Lower end part 10 Left side switching valve 10a Back face part 11 Right side switching valve 11a Back part 12 Elastic body 13 Elastic body 14 Rotation direction switching lever 15 Protruding part 15a Screw hole 16 Switching handle 17 Upper surface part 18 Left projecting part 19 Right projecting part 20 Lower frame 21 Middle frame 21a Storage part 22 Upper frame 23 Pin hole 24 Shaft hole 25 Hole for final fastening 26 Conversion socket 27 Lock cover

As a means for solving the above-mentioned problem, the device according to claim 4 is characterized in that the left switching valve 10 and the right switching valve 11 according to claim 3 are such that the front end portions 8 and 8 are lower than the lower end portions 9 and 9. 4. The manual gear wrench according to claim 1, wherein the manual gear wrench is deployed outward.

As a means for solving the above-mentioned problem, in the invention described in claim 5, the protrusion 15 of the rotation direction switching lever 14 of the manual rotation gear 3 described in claim 3 is symmetrical to the left side surface and the right side surface. 5. The manual gear wrench according to claim 1, wherein a protruding left protrusion 18 and a right protrusion 19 are provided, respectively.

As a means for solving the above-mentioned problems, the invention described in claim 6 is characterized in that the protruding portion 15 of the rotation direction switching lever 14 described in claim 3 is formed with a screw hole 15a on the back surface. A manual gear wrench according to claim 1 or 2 or 3 or 4 or 5.

  As a means for solving the above-mentioned problems, the invention according to claim 4 is such that the left side switching valve 10 and the right side switching valve 11 have the distal end portions 8, 8 deployed outward from the lower end portions 9, 9. The manual gear wrench according to claim 3, wherein the manual gear wrench is provided.

  As a means for solving the above-mentioned problem, according to the invention described in claim 5, the protrusion 15 of the rotation direction switching lever 14 of the manual rotation gear 3 is a protrusion-like left protrusion that is symmetrical to the left side and the right side. The manual gear wrench according to claim 3 or 4, wherein 18 and a right protrusion 19 are provided.

  As a means for solving the above-mentioned problems, the invention according to claim 6 is characterized in that the projecting portion 15 of the rotation direction switching lever 14 has a screw hole 15a formed on the back surface. 5. The manual gear wrench according to claim 5.

Claims (6)

In a manual gear wrench in which a manual rotation gear that is manually rotated by a rotating body is pivotally attached to a gripping frame in which an opening for inserting a bolt into a tip portion is formed,
A notch driving gear pivotally attached to the gripping frame having a notch part having the same diameter or the same diameter as the opening part of the gripping frame between the opening part of the gripping frame and the manual rotation gear. And two small-diameter gears that mesh simultaneously with the manual rotation gear and the notch drive gear between the manual rotation gear and the manual rotation gear,
A gear rotation direction switching mechanism that engages with the manual rotation gear and that can manually switch the rotation direction of the manual rotation gear and the notch drive gear to the left, right, or free rotation; A manual gear wrench, wherein the manual gear wrench is mounted in the gripping frame.   2. The manual gear wrench according to claim 1, wherein the rotating body that rotates the manual rotating gear is protruded on the gripping frame. 3.   The gear rotation direction switching mechanism has a length that allows a tip portion to contact a gear portion of the manual rotation gear at a lower portion of the manual rotation gear and a support portion attached in the gripping frame. The left switching valve and the right switching valve are supported so that the lower end portion is not separated from the supporting portion, and an elastic body is interposed between the back surface of the left switching valve and the back surface of the right switching valve. A protrusion of a rotation direction switching lever of the manual rotation gear separately provided between the left switching valve and the right switching valve, and a switching handle comprising the rotation direction switching lever connected to the protrusion The hand-operated gear wrench according to claim 1, wherein the hand-operated gear wrench is slidably provided on the upper surface of the gripping frame.   4. The manual gear wrench according to claim 1, wherein the left side switching valve and the right side switching valve have their front end portions extended outward from the lower end portion. 5.   4. The projecting portion of the rotation direction switching lever of the manual rotation gear is provided with a symmetrical projecting left projecting portion and right projecting portion on the left side surface portion and the right side surface portion, respectively. Or the manual gear wrench of 4.   The manual gear wrench according to claim 1, 2, 3, 4, or 5, wherein the protruding portion of the rotation direction switching lever has a screw hole formed on a back surface.

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