TW202212050A - Bore grinding device including a main body, a grinding head mounting set and a pressing member - Google Patents

Abstract

The present invention relates to an bore grinding device, which includes a main body, a grinding head mounting set and a pressing member, wherein the grinding head mounting set includes an extension rod and a nut. One end of the extension rod is coupled to a driving shaft of the main body, and is provided with a fastening structure. The nut is coupled to the other end of the extension rod. The pressing member is arranged on one side of the main body, and after being pressed, it can extend into the fastening structure and limit the rotation of the extension rod to allow an user to easily hold the body with one hand and press the pressing member to fix the extension rod, while holding a wrench with the other hand to remove the nut, so as to facilitate replacement of the grinding head. As a result, the present invention effectively solves the shortcomings of the conventional bore grinding device having a nut that is not easy to disassemble and assemble, and a difficult replacement of the grinding head. As such, a bore grinding device is provided.

Description

Inner hole grinding device

The present invention relates to a grinding device, in particular to an inner hole grinding device.

The existing inner hole grinding device includes a main body and a grinding head mounting group. An air motor is arranged inside the main body, and the air motor has a drive shaft. The grinding head mounting group includes an extension rod, a collet and a screw. A cap, one end of the extension rod is combined with the drive shaft, and can rotate with the drive shaft, the collet is clamped at one end of the extension rod away from the drive shaft, so as to install a grinding head, the nut is screwed on One end of the extension rod away from the drive shaft is used to tighten the collet to fix the grinding head.

In use, a wrench is required to disassemble and assemble the nut. In order to prevent the nut from rotating with the extension rod when the nut is rotated through the wrench, it is generally necessary for the user to hold another wrench and fix the extension. The nut can be disassembled only by turning the user's hands in opposite directions.

However, in this way, both hands of the user must hold the wrench, and the existing inner hole grinding device can no longer be held. Therefore, the existing inner hole grinding device must be pressed against a worktable to remove the nut. cause inconvenience in use.

To sum up, the existing inner hole grinding device has the disadvantages that the nut is not easy to assemble and disassemble, and it is difficult to simply replace the grinding head, and there is indeed a need for improvement.

In order to solve the shortcomings of the existing inner hole grinding device that the nut is not easy to disassemble and assemble, and it is difficult to simply replace the grinding head, the present invention provides an inner hole grinding device, which has a pressing component that can limit the rotation of the extension rod, which effectively improves the above problems and further described as follows.

The present invention provides an inner hole grinding device, which includes: a main body, the main body is provided with a driving shaft and an accommodating hole, the driving shaft is rotatably arranged inside the main body, and the accommodating hole is arranged on one side of the main body; An extension rod, one end of the extension rod is combined with the drive shaft of the main body, and a latch structure is provided on the extension rod, and after the extension rod rotates with the drive shaft, the latch structure can be accommodating with the main body Place the holes in a straight line opposite; a nut screwed on the end of the extension rod away from the drive shaft; and A pressing component is arranged in the accommodating hole of the main body, and after being pressed, the pressing component can extend into the locking structure and restrict the rotation of the extension rod.

The above-mentioned inner hole grinding device, wherein the accommodating hole is provided with an inner thread, the pressing component includes a screw element, a movable element and a pressing block, wherein the screw element is combined with the inner thread of the accommodating hole, the The movable piece can slide through the screwing piece, and the movable piece can extend into the locking structure, and the pressing block is combined with an end of the movable piece away from the locking structure.

Further, in the above-mentioned inner hole grinding device, the pressing component includes an elastic piece, the elastic piece is sleeved on the movable piece, and both ends of the elastic piece abut against the screwing piece and the pressing block respectively.

Still further, in the above-mentioned inner hole grinding device, the movable member is provided with a blocking flange, and the blocking flange is radially protruded on the movable member and located between the screwing member and the locking structure.

Preferably, in the above-mentioned inner hole grinding device, the locking structure is a through hole.

The present invention further provides another inner hole grinding device, which includes: a main body, the main body is provided with a driving shaft and an accommodating hole, the driving shaft is rotatably arranged inside the main body, and the accommodating hole is arranged on one side of the main body; an extension rod, one end of the extension rod is combined with the drive shaft of the main body, the extension rod is provided with a plurality of locking structures, and the plurality of locking structures are arranged on the extension rod at intervals, so that each of the locking structures The structure can be linearly opposed to the accommodating hole of the main body after the extension rod rotates with the driving shaft; a nut screwed on the end of the extension rod away from the drive shaft; and A pressing component is arranged in the accommodating hole of the main body, and after being pressed, the pressing component can extend into one of the locking structures and restrict the rotation of the extension rod.

The above-mentioned inner hole grinding device, wherein the accommodating hole is provided with an inner thread, the pressing component includes a screw element, a movable element and a pressing block, wherein the screw element is combined with the inner thread of the accommodating hole, the The movable piece can slide through the screwing piece, and the movable piece can extend into one of the locking structures of the extension rod, and the pressing block is combined with an end of the movable piece away from the extension rod.

Further, in the above-mentioned inner hole grinding device, the pressing component includes an elastic piece, the elastic piece is sleeved on the movable piece, and both ends of the elastic piece abut against the screwing piece and the pressing block respectively.

Preferably, in the above-mentioned inner hole grinding device, the movable member is provided with a stop flange, and the stop flange is radially protruded on the movable member and located between the screwing member and the extension rod.

With the above technical features, when the user needs to disassemble the nut and replace the grinding head, he can simply hold the main body with one hand, and press the pressing component to fix the extension rod, and hold a wrench in the other hand, through the The wrench of the nut abuts against the surface, so that the nut can be removed to facilitate the replacement of the grinding head. In this process, since the inner hole grinding device is firmly held by the user's hand, even if it is suspended without other support , the user can still easily and stably disassemble the nut. To sum up, the present invention effectively solves the shortcomings of the existing inner hole grinding device that the nut is not easy to disassemble and assemble, and it is difficult to easily replace the grinding head, thereby providing a simple disassembly Nut, inner hole grinding device for replacement grinding head.

In order to understand the technical features and practical effects of the present invention in detail, and to realize according to the contents of the description, the preferred embodiments shown in the drawings are further described in detail as follows:

The present invention is an inner hole grinding device, the preferred embodiment of which is shown in Figures 1 to 4, comprising a main body 10, a grinding head mounting group 20 and a pressing component 30, wherein:

The main body 10 is approximately cylindrical, the main body 10 is connected to an air supply source, and the main body 10 is provided with a push switch 101 and an air motor 11 , wherein the push switch 101 is arranged on one side of the main body 10 , The air motor 11 is installed in the main body 10. When the user presses the push switch 101, high-pressure gas can be introduced into the main body 10, thereby driving the drive shaft 111 of the air motor 11 to rotate. The operation mode of the push switch 101 is as follows: Existing technology, so it will not be described in detail.

Further, the main body 10 is further provided with an end cap 12, the end cap 12 is combined with the front end of the main body 10, so as to confine the air motor 11 in the main body 10, the end cap 12 is an annular structure, and the end cap 12 The cover 12 is provided with an accommodating hole 121 , the accommodating hole 121 is radially disposed on one side of the end cover 12 and communicates with the inner space of the end cover 12 , and the accommodating hole 121 is partially provided with a middle section. Internal thread 122.

The grinding head mounting group 20 is combined with the main body 10, and includes an extension rod 21, a collet 22 and a nut 23, wherein one end of the extension rod 21 is screwed with the drive shaft 111 of the main body, the The extension rod 21 is provided with at least one latching structure 211 , and after the extending rod 21 rotates with the driving shaft 111 , the at least one latching structure 211 can be linearly opposite to the accommodating hole 121 of the main body 10 , in the present invention In a preferred embodiment, the extension rod 21 is hollow and has two latching structures 211. The two latching structures 211 are arranged on the extending rod 21 at intervals and diametrically opposite, so that each latching structure After the extension rod 21 rotates with the drive shaft 111, the 211 can be linearly opposite to the accommodating hole 121, and each of the latching structures 211 is a through hole. In other embodiments, the latching structures 211 It may also be a groove.

The collet 22 is installed at one end of the extension rod 21 away from the drive shaft 111 for installing a grinding head; the nut 23 is screwed at the end of the extension rod 21 away from the drive shaft 111 for tightening The collet 22 is used to fix the grinding head. In a preferred embodiment of the present invention, the extension rod 21 and the nut 23 are respectively provided with a wrench abutting surface 212, 231, wherein the wrench of the extension rod 21 abuts against a wrench. The back surface 212 is optional.

Please refer to FIG. 3 to FIG. 6 , the pressing component 30 is disposed in the accommodating hole 121 of the main body 10 , and after being pressed, the pressing component 30 can extend into the latching structure 211 and restrict the extension rod 21, further, the pressing component 30 includes a screw member 31, a movable member 32, a pressing block 33 and an elastic member 34, wherein the screw member 31 is arranged in the accommodating hole 121, and is connected with the The inner thread 122 of the accommodating hole 121 is combined; the movable member 32 can slide through the screwing member 31, and the movable member 32 can extend into one of the latching structures 211 of the extension rod 21, so as to limit the extension When the rod 21 rotates, the movable member 32 is provided with a stop flange 321, the stop flange 321 is radially protruded on the movable member 32, and is located between the screw member 31 and the extension rod 21; the The pressing block 33 is screwed with one end of the movable piece 32 away from the extension rod 21 ; the elastic piece 34 is sleeved on the movable piece 32 , and both ends of the elastic piece 34 abut against the screwing piece 31 and the elastic piece 34 respectively. Press block 33.

As shown in FIG. 5 , before the pressing component 30 is pressed, the elastic member 34 pushes the pressing block 33 away from the screwing member 31 . At this time, the stop flange 321 of the movable member 32 is in contact with the screw The engaging piece 31 abuts against, so as to prevent the movable piece 32 from falling out of the accommodating hole 121 ; further, as shown in FIG. When moving, the elastic member 34 is compressed, and the end of the movable member 32 away from the pressing block 33 extends into one of the locking structures 211 to be locked with the extension rod 21 so that the extension rod 21 cannot rotate.

In addition, when the pressing component 30 fails and cannot function, the user can still disassemble the nut 23 by using the wrench abutting surface 212 provided on the extension rod 21 .

With the above technical features, when the user needs to disassemble the nut 23 and replace the grinding head, he can simply hold the main body 10 with one hand and press the pressing component 30 to fix the extension rod 21, and hold a A wrench, through the wrench abutting surface 231 of the nut 23, is used to remove the nut 23 to facilitate the replacement of the grinding head. , even if it is suspended in the air and there is no other support, the user can still easily and stably disassemble the nut 23. In summary, the present invention effectively solves the problem that the existing inner hole grinding device is difficult to disassemble and assemble the nut, and it is difficult to easily replace the grinding head. The disadvantage is to provide an inner hole grinding device that can easily remove the nut and replace the grinding head.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Anyone with ordinary knowledge in the technical field can use the present invention without departing from the scope of the technical solutions proposed by the present invention. Equivalent embodiments with partial changes or modifications made to the disclosed technical content, which do not depart from the technical solution content of the present invention, are still within the scope of the technical solution of the present invention.

10: Ontology 101: Press the switch 11: Air Motor 111: Drive shaft 12: End cap 121: accommodating hole 122: Internal thread 20: Grinding head installation group 21: Extension rod 211: Clip structure 212: Wrench abutting surface 22: Collet 23: Nut 231: Wrench abutting surface 30: Press the assembly 31: Screw parts 32: Moving Pieces 321: Stop flange 33: Press the block 34: Elastic

FIG. 1 is a three-dimensional external view of a preferred embodiment of the present invention. FIG. 2 is another three-dimensional appearance view of the preferred embodiment of the present invention. 3 is a cross-sectional perspective view of a preferred embodiment of the present invention. 4 is an exploded perspective view of a grinding head mounting group and a pressing assembly according to a preferred embodiment of the present invention. Figure 5 is a side sectional view of the preferred embodiment of the present invention. FIG. 6 is a schematic view of the operation of the preferred embodiment of the present invention.

10: Ontology

101: Press the switch

20: Grinding head installation group

30: Press the assembly

Claims (10)

An inner hole grinding device, which includes: a main body, the main body is provided with a driving shaft and an accommodating hole, the driving shaft is rotatably arranged inside the main body, and the accommodating hole is arranged on one side of the main body; An extension rod, one end of the extension rod is combined with the drive shaft of the main body, and a latch structure is provided on the extension rod, and after the extension rod rotates with the drive shaft, the latch structure can be accommodating with the main body Place the holes in a straight line opposite; a nut screwed on the end of the extension rod away from the drive shaft; and A pressing component is arranged in the accommodating hole of the main body, and after being pressed, the pressing component can extend into the locking structure and restrict the rotation of the extension rod. The inner hole grinding device as claimed in claim 1, wherein the accommodating hole is provided with an inner thread, the pressing component comprises a screw element, a movable element and a pressing block, wherein the threaded element and the accommodating hole are in contact with each other. The inner thread is combined, the movable piece can slide through the screwed piece, and the movable piece can extend into the locking structure, and the pressing block is combined with the end of the movable piece away from the locking structure. The inner hole grinding device according to claim 2, wherein the pressing component comprises an elastic member, the elastic member is sleeved on the movable member, and two ends of the elastic member respectively abut against the screwing member and the pressing block . The inner hole grinding device according to claim 2, wherein the movable member is provided with a stop flange, the stop flange is radially protruded on the movable member, and is located between the screwing member and the locking structure between. The inner hole grinding device according to claim 3, wherein the movable member is provided with a stop flange, the stop flange is radially protruded on the movable member, and is located between the screwing member and the locking structure between. The inner hole grinding device according to any one of claims 1 to 5, wherein the latching structure is a through hole. An inner hole grinding device, which includes: a main body, the main body is provided with a driving shaft and an accommodating hole, the driving shaft is rotatably arranged inside the main body, and the accommodating hole is arranged on one side of the main body; an extension rod, one end of the extension rod is combined with the drive shaft of the main body, the extension rod is provided with a plurality of locking structures, and the plurality of locking structures are arranged on the extension rod at intervals, so that each of the locking structures The structure can be linearly opposed to the accommodating hole of the main body after the extension rod rotates with the driving shaft; a nut screwed on the end of the extension rod away from the drive shaft; and A pressing component is arranged in the accommodating hole of the main body, and after being pressed, the pressing component can extend into one of the locking structures and restrict the rotation of the extension rod. The inner hole grinding device according to claim 7, wherein the accommodating hole is provided with an inner thread, the pressing component comprises a screw element, a movable element and a pressing block, wherein the threaded element and the accommodating hole are in contact with each other. Combined with internal threads, the movable piece can slide through the screwed piece, and the movable piece can extend into one of the latching structures of the extension rod, and the pressing block is combined with the end of the movable piece away from the extension rod. The inner hole grinding device according to claim 8, wherein the pressing component comprises an elastic piece, the elastic piece is sleeved on the movable piece, and two ends of the elastic piece abut against the screwing piece and the pressing block respectively . The inner hole grinding device according to claim 8 or 9, wherein the movable member is provided with a stop flange, the stop flange is radially protruded on the movable member, and is located between the screwed member and the extension rod between.

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